US1904306A - Fastener inserting machine - Google Patents

Description

April 18, 1933.

S. L. GOOKIN FASTENER INSERTING MACHINE Filed July 21, 1950 Fig? 1.

8 Sheets-Sheet l A ril 18, 1933. s. GOOKIN FASTENER INSERTING MACHINE 8 Sheets-Sheet 2 Filed July 21,

8 I /2 I I 9 I I I I w i IIIIIIIIJI I n Iva I w .H 7 4 IIIIIIIIIIII IIIIII I IIII IIIII-I IIII N.. 2 II I 9 II IIIIIII IIKIIII IUMH IH I 9.

A ril 18, 1933. I s. L. GQQKBN LQMfiQQ FASTENER INSQERTING MACHINE Filed July 21, 1930 8 She'iSwsheiet 3 new if April 18, 1933. s. GOOKIN I FASTENER INSERTING MACHINE Filed July 21, 1950 8 ShQGtSr-ShGGt 4 DEAD CENTER LINE OF TOGG-LE o 7 LIMIT OF RETRACTION FOR INSERTING LIMIT OF RETRACTION i FOR PUNCHING m F6 mmm mm wa m P u LE N mw w m LWW c DWELL FOR FEEDING April 13, 1933- s. L. G OOKIN FASTENER INSERTING MACHINE Fiied July 21, 1950 8 Sheets-Sheet 5 April 18, 1933. 600m. 1,904,306

FASTENER INSERTING MACHINE Filed July 21, 1930 8 Sheets-Sheet 6 II II II April 18, 1933.

S. L. GOOKIN FASTENER INSERTING MACHINE Filed July 21, 1950 8 Sheets-Sheet 7 Filed July 21,- 195?) 8 Sheets-Sheet 8 1g: 2 2

Wei/0311M pendently of the other.

Patented Apr. 18, 1933 UNITED STATES PATENT c erics SYLVESTER LEO. GOOKIN', OF QUINCY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CDRPO RATION OF NEW JERSEY Application filed July 21,

This invention relates to fastener-inserting machines and is herein illustrated as embodied in a duplex machine designed to insert two eyelets simultaneously in two confronting elements of work such as the quarters of a shoe-upper. It is to be understood, however, thatin some of its aspects the invention is not limited to eyeleting machines nor to machines for operating on shoeuppers, or even to machines of the duplex type. Nevertheless, for purposes of eX- planation, the illustrated machine will be described in terms commonly used in referring t'o'dnpleX eyeleting machines.

Regarded generally, the invention aims, among other things, to improve the organization of duplex fastener-inserting machines with regard to high speed, smoothness and quietness of operation, efiicient application of power to the parts that operate under lieavy'stresses, and facility in effecting substitutions of interchangeable raceway assemblages. V I

Machines of the duplex type'are commonly provided with two groups of elements for punching fastener receiving holes in the work and for inserting and upsetting fasteners-in the holes so punched. Each of the groups comprises a punchingdevice and a fastener-inserting device arranged side by side, and a hammer for operating those devices alternately. The punching device and the inserting device are shifted laterally, first to place the inserting device in register with the hole mad-e by the punching device, and thereafter to feed the work so'that the successive fasteners of-a series'will be suitably spaced one from another.- v

In. some former machines in Which an operating hammer acts first on'a punching device that cooperates with a solid punch-bed and thereafter acts on afastene'r-inserting device, no provision has been made for regulating the strokes of thesedevices each inde- Consequently, to provide for. such regulation insome other former machines each hammer has been provided with two individually adjustable strikers, one for the punching device and the other for the fastener-inserting device.

FASTENER INSERTIN' G MACHINE 1930. Serial No. 469,432.

that type is illustrated in United States Letters Patent No. 934,066, granted September 14:, 1909 on application of George Goddu.

Although a construction of that kind will operate with satisfactoryresults when the parts are new or not'badlyworn, the offset relation between one of the strikers "and the device operated thereby develops considerable side thrust of that device "against the bearing member in which it slides, and also develops a skewing tendency of the device, both of Which wear away the guiding surfaces unevenly and cause loose play between the worn device and its guiding member before the machine is otherwise seriously alfected by wear. I VVi'th a'vie'w to eliminating this cause of excessive wear, Without sacrificing provisions for individually regulating the strokes'o f' a punching device and a fastener=inserting device, an object of the present invention is to provide an improved construction that will do away with forming a lateral projection on either of the devices and permit a common operating member such as a striker'to act alternately on the two devices substantially at the center line of each device.

Accordingly, an improvement constituting one feature of the present invention consists in a novel combination in which a punching device and a fastener-inserting device an ranged'si-de by side are bothengaged centrally by a common operating member such as a hammer and are shifted laterally to and fro to be operated alternately by that member, the said devices being provided with centrally located and individually adjustable heads bywhich their respective strokes maybe regulated. I V When a punching device and a fastenerinse-rting device are individual and separate from each other, as in machines of the type under consideration, 'a relatively short stroke su ffices for the punching device, whereas a sidesof its dead-center position.

longer stroke is required by the inserting device because this device has the additional duty of detaching the fasteners from a raceway and inserting them into the work.

Hence, to favor high speed and ease of operation the present invention also provides improved mechanism by which unnecessary motion of a double-duty operating member is eliminated. This result is obtained in the illustrated machineby causing less retraction of a double-duty operating member after the fasteneninserting stroke of that member than after the punching stroke thereof, and by limiting the retractory movement of the punching device so thatthis device will clear the operating member when the latter is at the terminallimit of its shorter retractory stroke.

Another object of the invention is to provide improved hammer-operating mechanism. In machines that utilize one doubleduty hammer to operate both a punching device and a fastener-inserting device the hammer is required to execute two operating strokes in each cycle. With that condition as the basis of a problem that also involves the application of considerable power to operate the hammer against heavy resistances, an effective solution of the problem is provided by a form of operating mechanism that may be termed a double-throw toggle-mechanism. The doubl'e throw effect of the illustrated toggle-mechanism is obtained by reciprocating a toggle element across and to opposite Consequently, each stroke of such range of the toggle-element causes one operating stroke and a reverse stroke of the part or parts operated thereby, and so it follows that one corresponding reciprocation of the toggleelement causes two reciprocations of the operated part or parts. Therefore, to utilize such a mechanism consistently with the aforesaid purpose of reciprocating a doubleduty operating member such as a hammer with strokes of two lengths, a feature of this invention consists in providing a doublethrow toggle-,mechanism arranged to travel a greater distance to one side of its deadcenter position than to the other.

The illustrated machine comprises a raceway to which fasteners are fed from a hopper and by which the fasteners are delivered to the fastener-inserting means. In factories that use such machines to insert fasteners of different styles, colors or sizes, it is commonly necessary to change from one kind of fastener to another several. times each day, but,

to avoid the inconvenience of removing the unused fasteners from one raceway-and-hopper unit and substituting fasteners of another kind in the same unit, it is common to provide a plurality of interchangeable raceway-and-hopper units stocked with different kinds of fasteners and to substitute one such unit for another whenever a change of fasteners is necessary. In making these substitutions, it has heretofore been necessary to disconnect the raceway-operating mechanism from a raceway-and-hopper unit before detaching that unit from the machine and to connect the operating mechanism to the substituted unit after attaching the latter to the machine.

lVith regard to the conditions last mentioned, still another object of the present invention is to save time and simplify the procedure incidental to attaching and detaching raceway-and-hopper units.

To this end a novel feature of the present invention consists in providing a detachable raceway and the raceway-operating mechanism of a fastener-inserting machine with cooperative interlocking elements formed and arranged to be cooperatively coupled by the act of placing the raceway in cooperative relationship to the fastener-inserting means of the machine. As herein shown, the coupling elements mentioned embody tongue-andgroove formations arranged to be coupled by moving the raceway sidewise into its cooperative relationship with the fastener-inserting means.

Various improved features embodied in the illustrates means for supplying fasteners to the fastener-inserting mechanism constitute the subject-matter of my application Serial No. 552,698, filed July 23, 1931 as a division of this application.

The illustrated machine also embodies various other features of invention hereinafter described and set forth in the appended claims.

Referring to the drawings,

Fig. 1 is a left-side elevation of a duplex eyelet-inserting machine constructed in ac cordance with this invention;

Fig. 2 is a right-side elevation on a larger scale of the principal operating mechanisms, the view being squared relatively to the sheet for convenience in making the drawings;

Fig. 3 is a view similar to Fig. 2 but omitting some of the elements in the foreground of Fig. 2 to show more clearly certain elements in the background;

Fig. 4 is atop plan view, partly in section,

I of the principal elements included in Fig. 3;

Fig. 5 is a top plan view of an operating connection forming a part of the mechanism shown in Fig. 4; V

Fig. 6 is a diagrammatic view of a doublethrow toggle mechanism and double-duty hammers for operating the punching devices and the fastener-inserting devices;

Fig. 7 is a chart of the motions imparted to one of the hammers by the mechanism shown in Fig. 6;

Fig. 8 is a sectional View indicated by line VIIIVIII of Fig. 3

Fig. 9 is a left-side elevation of the punchthee in. F st c;

'e 1 a d T e 17 a We i w .s aring includediniF-ig. the plane of Fig. 17 20,199, V if' lfig 18: is a left side elevation, partly in mosses a 3 its dier i se the feetn rri ertins d v and el mei tei l ely relet d' h t I Fig. 10 is a frontelevation of theassem- Eisll s. per p t e iew t E ju t: able-Mel f we kkno n on ru i 1 rr ies duplex edg -eas a d P e e e ei 2 a; ong tudinal ct on o ,th' up r Pun hing de i c. is-

s el n t i a se t n th upper. ast n e t device 1f ig. l4 is a top plan view, partly in section; regulatable wojrkefeeding mechanism;

. f Fi raise horizontal' sectionalview of m gSrfor adjnstingthe unit shown 'in Fig. 11. v v

i i indi ated by line XVII+XVII3 eeti e o upl y l erp s dup raceway and related operating-'mechanisms;

v B dg 1:9 isa topplan; view projected from Fig. 18 showing a portion of the raceway n mechanism: fo p at ng he l y cnd thereof Fig. Ois a top view, partly insection, of

latching device by Whichthe racevvay'may te eblySe r t th frame o h machin liig, 21 is avz sectional View in a vertical plane of the structureat the glovver right Fig. 1B 1 Big. 22; is a vertical; section through the iheppe in a pl n n c ted by line X F- XX onF g- F g. 23 isja' vievv showing the'hopper in elevation and the; raceway in cro-ss section E sel8$a r 1 F-ig; 24' 's,a vertical sectional view of the hopper in plane extending from front to rear; nd. v

Fig; 25s a perspective vievfof the'upper portion of oneof two similar links for operating the hopper brushes, respectively. v

" Referring to "Fig.- l the machinecomprises a, hollow main frame opengat the frontv and/formed with a, flat base 21 adapted to hel i 0h fl h, .(i1t 0'W 7,1316 ra 20 provided with a stationary' horizontal shaft 22 on which twofidle pulleys, 'one represented at '23, are'mounted to guide a driving 'belt 24to; a receiving pulley forming a part ofadisconnectible clutch the pulleys V 23- and 25-being enclosed in the-frame 20,

was

and the base 21- having an opening through which-the belt extends. i

T0 facilitate assembling the mechanism, the main frame 20 is -preferably formed to receive 1 a l detachable, unit. comprising upper and' loiver. 'bealring'in'einbers7 26; a cam shaft 27 r] ournaled;therein, a rod 63 by WhichEthe ,meiiilbers 26, are rigidly connected, rand v va- ..ri o,us other elements carried by the rod as Well as those carried by the-cam shaft. ,Accordngly, the right-hand side of the frame 20 is provlded with a hinged section 28 which may be opened to permit the insertion and removal of the detachable unit. The bearing members are aflixed to the main f ame 20 by bolts 29 (see Figs. 2 and I I p Any suitable type of clutch maybeused to operate the cam shaft 27 but I prefer a clutch "of the type shown and (lESCTlbGCliD United St-ates Letters Patent No.-"1,351,138; granted offthis type of clutch are Well known, the" de- August '31, 1920, 'onfapplication of R". B. finmth. Since the construction and operation tails of construction are not herein shovvn.

For the purposes of the present description it villbe sufficient-to state that the clutch is provided 'Witll a controlling member "30 (Fig. l) which may be connected to treadle (not-shown) and which controls the clutch as retracted against th'e stress ofa springfihe driven oortion of the clutch andthecamshaft 27 are picked up and rotatedby the continu- 'ously' rotating pulley 25, the coupled relation ,7

continuing until the cam shaft reaches apiedetermined angular position in any cycle 'du r ing which "the coi'itrolling member 30 is re leased by the treadle.

structural features "of themachine; the fol lowing outline of the general modeof operation Will be in the lnterest of a clear under- When the controlling 7 member 18 released it first unouples the driv follows. When the controlling member V V standing. 'A pair of opposed punching devices and. a pair of opposed fastener-ins ert"- ino devices arearrangedto be shifted laterall y to and from acommon operating-locality. The punching devices stand initially in register Wlth said locality and are operated first to punch holes in two confronting elements of Work such as the quarters of a shoe upper. When the punching devices have been operated and retracted both pairs of, devices'are shifted to vthe re ar, thereby placing 'thefas tener-inserting' devices in register Witlrtho punched holes, the Work remaining stationry. 7 The inserting devieesare now operated to transfer eyelets from a duolexrac'evva to c .v i Y H the Workfand to upset and clench the eyelets The inserting devices in the punched holes. dwell against the eyelets just clenched Whilev they are movedlatrally to feed the vvork, and they are thereafter retractedfrom-the clenched eyelets and are returned to their initial positions the punching devices also're;

T as

turning to their initial positions at the common operating locality.

Punching devices Each punching device comprises a plunger 31 and a tubular punching tool 32 carried thereby (see Fig. 12). These punching devices are arranged in opposed relation to each other as shown in Figs. 9 and 10. They are guided toward and from each other and are shifted laterally by a duplex head or carrier 33 in which two coaxial bores are formed to receive them. The outer end of each plunger 31 is bored and tapped to receive a bolt 34 which constitutes an adjustable head, a lock-nut 35 being placed on the shank of the bolt to maintain the head at any desired position of adjustment. This adjustment is ers31.

Referring to Fig. 9, the punching tools 32 cooperate with opposite surfaces of a dupleXpunch-bed 40. The chips or pills of Waste material formed by the punching tools pass through the tips 32 and are discharged through the sides of the plungers 31 which are provided with ducts 41 in register with discharge openings 42 formed in the head 33.

Fastcner--inserting devices The two fastener-inserting devices are likewise mounted in the head 33 in opposed relation to each other. Each of these devices comprises the features of construction shown best in Fig. 13. The plunger 43 of each inserting device is arranged to slide in a bore formed in the head 33 and is provided with an annular groove or seat 44 at its inner end to receivethe flanged end of an eyelet. A spindle 45 normally projects from the seat 44 to pick an eyelet from a raceway and to carry the eyelet to a hole punched in the work. A compression spring 46 contained in a bore in the plunger normally projects the spindle 45 but permits the spindle to be repressed during the upsetting and clenching operation. Backing for the spring 46 is provided by a bolt 47 screwed into the outer end of the plunger, the bolt also constituting an adjustable head against'which one of the aforesaid hammers acts to operate the inserting device. The bolt 47 also constitutes means for regulating the operating stroke a lock nut 48 to maintain it inany desired position of adjustment.

Since each fastener-inserting device is provided with an adjustable bolt 47 to receive the blow of the hammer, the construction provides for easily and quickly altering :the conditions of operation according to various thicknesses of work. Forexample', the accessories for each machine may include'a plui rality of pairs of fastener-inserting devices of the type illustrated, one pair for operating on thin Work, one pair for operating on thick work, and one or more pairs for operating on work of intermediate thickness, the 3 bolts 47 of each pair being adjusted with regard to the particular thickness of work upon which that pair is to be used.-' Thus, when it becomes necessary to shift from work-of one thickness to work of another thickness,- the operator has merely to detach thepair of fastener-inserting devices then in the machine and substitute another' pair invvhich another condition of regulation is maintained by the bolts 47 and the lock-nuts 48. The two fastener-inserting devices are retracted by spring-stressed means comprising levers 49 and a tension spring 50 connecting the levers. These levers are mounted on the fulcrum studs 38 and their outer ends are provided with laterally extending pins 51 which extend through slots 52 formed in the head 33 and project into recesses 53 formed in the plungers 43. The retractory movements of the spring-stressed levers 36 and 49 are limited bystops 180 carried by the head 33. The inserting devices coop- 'erate with a duplexfclenching [anvil 54 mounted adjacent to the punch-bed-40. The punch-bed 40' and the'clenching anvil 154 are mounted side by side in a tongue 55 aifixed to the head 33 and arranged to project between two confronting elements of'work.

The head 33 is movable from front to rear and is also'inovable from side to side, the first ofthese movements being utilized to place the fastener-inserting devices in'register with the holes punched in the work" by the punching devices, while the other movement is utilized to feedthe work. For these purposes, the head 33 is mounted on acarriage 56 (Fig. '9) to which it is connected by a pivot pin 57. The carriage 56' is arranged to slide first to the rear and then to the front on two straight parallel guide rods 58. The ends of these rods are mounted in sockets formed in the frame 20, The car,- riage 56 is reciprocated by mechanism comprising two cooperative cams 59 and 60 (Figs. 3 and 4), a bell-crank lever 61, cam rolls carried by the lever and engaging said cams respectively, and a link 62 (Fig; 9) connecting the lever and the carriage The lever 61 is mounted on the rod 63 which 1 of the'inserting device and is provided with serves as a fulcrum for a series of cam levers likewise mounted thereon. As previously stated herein the rod 63 rigidly connects the removable bearing pieces 26. The pivot pin 57 connecting thehead 33 and the carriage 56 provides for angular movement ofv the head for the purpose of feeding the work. 7

Referring to Figs. 1, 2,3, 4, 9 and 10, the machine is provided with a stationary duplex work-support 64' and with two presserfeet ,65 arranged to cooperate with opposite,

surfaces thereof to clamp two confronting elements of work. The construction and arrangement ofthese parts are substantially similar to those illustrated in United States Letters PatentNo. 1,030,833, granted June 25,1912 on application of F. A. Rumney. Moreover, as shown in Fig. 11 the presserfeet 65 are carried by leaf-springs 66 an chored to a bifurcated block 67 of wellknown construction by which duplex edgegages-68 are provided to straddle the tongue 55 in which the'punch-bed and the clenching anvil are imbedded. The block 67 also Jr straddles the stationary work-support 64 and is affixed thereto, by a clamping screw 69 (see Fig. 3). The work-support 66 is affixed to a. bar- 70 (Fig. 10) provided with rackteeth '71 (Fig. 9), onits upper surface. A

,- pinion 72 meshes. with the rack-teeth for the purpose of adjusting. the support 64 to the front and rear, the edge-gages 68 being there-' by adjusted toregulate the distance from the guide edges. of the work elements to therows i of inserted eyelets- The rack-bar 70 has tongue-and-groove connection with a guiding fixture .73 (Fig. 10) attached to the frame 20. The adjusting pinion 72 is pinned on a cylindric stem 74 journaled in a fixed bearing sleeve 7 5. A knob 76 is provided for turning the stem 74. I

Figs. 15,16 and 17 illustrate aform of gearing by which fine increments of rotation may be imparted to the pinion 72 by the knob 76. The knob is arranged to turn on a pro-.

jectingportion of the fixed sleeve 75 and is formed with a central recess 170 and with a nonacentral recess 171. The recess 170 encloses asun-gear 172 and a driven gear17 3.

These gears are of substantially the same diameter but one'of them is provided. with one more tooth than the other. The teeth of both of'thes-e gears are engaged by a planet ary pinion 174 carried by the knob76 and arranged in the recess 171, the ends of this pinion being turned downto provide trunnions, one of whichis journaled in the back wall of the knob and the other of which is journaled in a detachable cover-plate 176 secured to the front of the knobby screws 177. As-the knob is turned, the planetary pinion rolls around the sun-gear 172 and produces relatively slight turning of the driven gear 173. The latter gear is. formed on one end of the, stem 74 which transmits the resultant rotational novement to the pinion 72.

'7 Work-feeding mecham'm 4 Referring to Figs. 9and- 14 the pivotally mtunted head 33 has an articulate connection with an arm 77 by which ltlSVOSClllltQCl about the pin-57 to feed theqwork. ,The connection betweenthe head and the arm is formed by a swiveled block 78 mounted on the head andv arranged in a slot 79 formed in the feeding arm. The long dimension of the slot 79 is parallel tethe shifting motion imparted to the head by the carriage 56. The arm 77 is mounted to oscillate about a'fixed axis parallel to the axis of the'pin 57, the fixed axis being provided by a pivot member 80 con-' necting the rearend of the arm 77 to a boss formed on the frame 20. When the parts are in their-initial positions, as shown in Figs.

byt-he cam shaft 27. These cams are engaged respectively by cam ro-lls 83 mounted on a bell-crank lever 84, the lever being oscillated positively in both directions without lost motion. The rod 63 constitutes the fulcrum for the lever 84. V I

Themotions of the lever 84 are transmitted to the feeding arm 77 bya well-known formof regulatable mechanism of the type illustrated and described in United States Letters Patent No. 683,488,.granted October 1, 1901 on application of M. H. Pearson. This mech-- anism provides for varying the length of the oscillations imparted to the arm 77 although the amplitude of the oscillations of the bellcrank lever 84remains constant. Two links."

85'and 86 are pivotally connected to the lever 84 and tothe .arm 77 respectively and they are also pivotally connected to each otherby a pivot pin 87 which extends through a radius arm 88 (see Fig. 2). The radius arm is mounted on a manually movable regulator 89 towhich it is connected by a pivot pin 90. The regulator 89 is mounted on a pivot stud 91 affixed tothe frame 20 and is movable about the axis of that stud to shift the pivot pin 90. When the parts are in their initial positions, as shown in the drawings, the axis of the movable pivot pin 87 coincides with the axisof thefixed pivot stud 91. Consequently, the initial position of the feeding arm 77 is not affected by movement of the regulator 89, but the travel of the connecting links 85 and 86. is modified by shifting the fulcrum pin 90 of the radius arm 88, with a corresponding increase or decrease in the length of travel communicated to the feeding arm 77. The regulator 89 overlies a stationary'sector plate 92 in which a series of holes 93 are formed to receive stop pins 94. These pins may be placed in any desired holes and spaced apart to permit angular movement of the regulator between any de- Y mers.

crum plns 97 which rock 1n bearings 98 1n the striker.

sired limits according to the requirements of the work. A. torsion sprlng 95 (Fig. 14) normally mamtams the regulator 89 against one of the pins 94 as shown in that figure.

H ammer mechanism The punching devices 31 and the fastenerinserting devices 43 are operated alternately by two levers 96 hereinafter termed ham- The hammers are mounted on fulframe 20 (see Fig. 4). The forward end of each hammer is provided with a hardened steel block 99 which constitutes a head or Each hammer operates first a punching device and subsequently a fastenerinserting device, the two devices being shifted alternately into register with a common operating area of the striking surface of the hammer by the reciprocatory movement of the sliding carriage 56 (see Fig. 9).

TVhen the parts occupy their initial positions, the punching devices stand in register with the heads of the hammers while the o r fastener-inserting devices stand in front of the hammer heads and clear them. On the other hand, after the punching devices have been operated by the hammers and when the head 33 has been shifted to the rear, as

iereinbefore described, the fastener-inserting devices stand in register with the hammer heads while the punching devices stand behind the hammer heads and out of the operating range thereof. Cavities 100 are formed in the hammers at the rear of-the heads 99 to receive the outer ends of the punching devices when the fastener-inserting devices are in register with the hammer heads, the cavities insuring clearance of the punching devices so that the hammers may operate the fastener-inserting devices without engaging the punching devices. I

The invention provides improved mechanism for operating the hammers 96 twice in each cycle, this mechanism embodying a duable extent, of reactionary stresses that normally tend to create friction and wear of the parts. 7 I

Referring to Figs. 3 and 6, the rear ends of the hammers 96 are connected by pivoted toggle links 101 to a slide 102 which constitutes the knee of the toggle. The links 101 are connected to the hammersby pivot pins 103 and are connected to the 'knee 102'by pivot pins 104. The slide 102 is mounted on and guided by the guide rods 58 and is arranged at the rear of the sliding carriage 56 which is also mounted on these rods.

The slide or knee 102 is reciprocated positively in opposite directions by two cooperative cams 105 and 106 (Figs. 1, 2 and4). These cams engage, respectively, cam rolls 107 and 108 carried by a bell-crank lever 109 'mounted on the fulcrum rod 63. The lever 109 and the slide 102 are connected by a pivoted link 110 (Fig. 5). Thus,'while the guide rods 58 maintain the knee or slide 102- in a fixed path of travel between the hammers 96 the outer pivots 103 of the toggle both move toward and from each other. Under these conditions the toggle mechanism is doubleacting, since each toggle linkoperates one of the hammers, but the resistance encountered by each of the hammers reacts through the toggle links 101 and the'knee'102'to the opposite hammer, thereby relieving the guide rods; 58 from the heavy stresses crosswise thereof.

Fig. 6 illustrates diagrammatically successive positions of the knee pivots 104, while Fig. 7 illustrates corresponding motions imparted to the head of one of the hammers. It isto be understoodthat the motions of the other hammer head are similar to, but the reverse of, those represented in Fig. 7.

Referring to Fig. 6, the parts are shown in their initial positions. The centers of the knee pivots 104 are representedby small circles A, B, C and D at successive positions in' their paths of travel. Assuming that the knee pivots stand initially at positions A and that a cycle of operations is about to be executed, these pivots are carried first to posi tions B. Tn moving from A to B, the knee pivots are carried across the dead-center line of the tog le which is represented by a dot b u and-dash line 1n this figure. Since the punching devices stand initially in register 7 with the hammer heads 99 they will be operated while the knee pivots 104 progress from positions A. to the'dead-center line, and the work elements lying against opposite ends of the punch-bed 40 will be completely punched to provide fastener-inserting holes.

The travel of the knee pivots 104 from A to B is continuous, in consequence of which the hammer heads are immediately and fully retraeted after having caused the punching devices to function. It is to be observed that the travel of the knee pivots from the deadcenter line to B is greater'than the travel though the hammerlheads 199 stand'initially movement the knee of the toggle .is advanced to move the knee pivots from C'to'D :(LFig. 1 6), the heads of the hammers being therebyv retracted far enough to-clear-theouter ends I ing movement impartedto thehead oritool v v l proved ,mea'ns :for supplying eyelets to the fastener-inserting devices 43. Y The illustrat at intermediatepositions between their two limits of motion'they are retracted to their outer-limits of motion when the knee ipivots are at B. See the left-hand arrow in 'Fi'gz'fl which represents the 'firstmotion of they head of the upper-hammer. The hammer heads are thus retractedfar' enoughto clear the fastener-inserting devices which "are thereupon shifted into register with them. The

retracting levers 36 (Fig. :9), as well' asthe" levers 49, now lie. against the stops 180.,rand the punching devices are thereby retracted far enough to clearthe raceway. s The knee 102 is next shifted in the reverse direction to carry the pivots 104 from B to C where-they dwell 'whilesthe feeding of the work takes place. In traveling from-2B to the dead-center line, the pivots 104 cause the hammer; heads to operate the fastener-inserting devices, the slight travel ofthe knee pivots beyond the-dead-center line to result ing in a'very slight retraction See the sec- 0nd arrow from the left :in Fig. 7.: This slight retraction relieves the pressure-ofthe inserting devices against the fasteners :which have now been inserted. and completely. upset or clenched, but is not suflicient to disengage these devices from the fasteners. Referring to Fig. 10;, the heads 99 of the hammers have lateral dimensions sufficient to maintainthe inserting devices against the clenched: fasteners throughout the maximum work-feeds:

carrier 33. Q

At the completion of work-feeding the punching devices which in the meantime have been ma ntained at their outer V limits o-fretraction by the stopslSOtFig; 9).

*i in the paths of the retracting levers '36. The

hammersare thus retractedito, intermediate positions indicated by thethirdfarrow from the left in Fig. 7 and-are maintainedin those positions-while the carriage 56 moves-fors- I ward-to shift thepunching'devices again'into register with the hammer heads. 1W hile this shifting is taking place the inserting devices which have. been only partially retracted, are shifted out ofsregi'ster with; thehammer heads andare-thus released so that they may be returned to their outer limits of retrac- "tory motion by'their' retracting. springf50. -At this point the retracting levers 49- are arrested in their'initial positions by the stops v In themeantime, the work-feeding mechanism returns to itsinitial position-and the. knee 1020f the toggle moves toward the rear, thereby carrying the :knee pivots 104 from Dto A. This latter movement of thetoggle knee causes the heads at the zhannners to advance a :short distance .as indicatediby the .r 'ight hand. arrowin Fig. 7. The cycle of the toggle mechanism is completed Wh'en'the mot-ionlast described .has .caused. a slight movement 1 of the punching devices toward eachother. It will be understood that when the reparation of the machine continues through a series -:of cycles without. interrup= tion, :the kneepivoits 104 will: travel from D to :13 without interruption at A-except inthe final cycle of each-series whenthe-knee pivots willbe arrested at Art Thuspwhen the machin'e-is arrested with the parts in their initial positions, the punching devices are advanced ypartlway through. their travel towardthe' punchblock and are sufficiently closetojan article of Work to indicate to the operatorwhethersthe .work is initially placed- '3 The; present invention also provides img ed fastener-supplying means comprises a du pleixiho'pper 115 (Figs..l and .18) and axdus ple'X racewayynthe individual divisions of whicha-rei indicated at 116 and 117 respectively. These elements and others by whichthey 'are connected and braced constitute a detachable unit Whichmay berea'dily mount ed on "the frame'20 and detached therefrom With'Veny little loss of time. Consequently, a plurality of "detachable raceway units containing eyelets :of different sizes, different colors or other characteristics maybe read-ir'ly interchanged: in accordance with ments of successive'lots of work.

' The divisions-.116; and 117- f of the i'aeeway are parallel to each other-except their upper portions which'diverge upwardly,lthe

parallel portions being rigidlyconnected -to the require:-:

tener-insertin'gv 5devices, whereas ?the upper section and the hopper arestationary, The two sections have-ah articulate pivotal connection which includes a coupling mem ber designed to cooperate. with a .omplem'en tal coupling member permanently "attached to the frame 20 and forming a part of the operatingv mechanism by which the delivery end of the raceway is moved to and fro;

The construction is such that .the act of mounting any one of a plurality of detachable raceway unitson the means provided for that purpose also results in coupling the movable section of the raceway to the raceway operating mechanism, no additional actor operation being required to establish the desired connection or relation of the movable section and the operating mechanism.

The raceway is supported in its operative position by two parallel dowel studs 120 projecting horizontally from the left-hand side of the frame 20. The two spacing blocks 118 are bored to receive the'dowel studs as shown in Fig. 20. Interconnected latches 121 mounted on the frame 20 and connected thereto by pivot pins 122 are arranged to snap over outer edges of the blocks 118 and thereby maintain the raceway firmly against the frame 20. The latches are connected by a tension spring 123 which maintains them normally in latching position. The latches are also connected by a pin-and-slot connection 124 whereby the movements of one are communicated to the other. A knob 125 is formed on one of the latches to provide convenient means by which the latches may be retractedto release the raceway.

The pivotal joint by which the stationary section and the movable section of the raceway are connected comprises coaxial pivot pins 126 and 127 (Fig. 21). The axis of these pins intersects the channels 128 of the two divisions of the raceway (see Fig. 19) but the pins are spaced apart to clear the lower division so that the eyelets in that division may cross the axis of the joint without interference. A spacing block 129 interposed between the two divisions of'the movable section of the raceway is connected to the adjacent stationary block 118 by the pivot pin 126, while a reinforcing block130 affixed to the lower side of the movable section is connected to a stationary reinforcing mem her 131 by the pivot member 127. The blocks 129 and 130 and the two divisions of the movable section are all rigidly clamped to each other by bolts'132, while the reinforcing member 131 is affixed to the stationary section ofthe raceway by screws 133.

-The pivot pin 127 is pinned to the block 130 and is utilized to communicate oscillatory motion to the movable section. For this purpose a radially extending tongue 134 is formed on the lower end of thispivot member. The tongue 134 constitutes one element of an interlocking tongue-and-groove coupling, the complemental groove of which is formed in a head 135 of a rock-shaft 136. Therock-shaft is journaled in a boss 137 formed on the frame 20 and is provided with an arm 138 by which it may be oscillated. I

replenishmentof the two series.

The mechanism for operating the movable sectionof the raceway. is shown in Fig.19. A cam 139 carried by the cam shaft 27 cooperates with a cam-roll 140 carried by a lever 141. The lever is mounted on the fulcrum rod 63 and is held against the cam by a tension spring 142. A link 143 communicates motion from the lever 141 to the arm 138 to oscillate the movable section of the raceway. r

When the parts are in their initial positions as shown in Fig. 19, the tongue and groove of the coupling 134,- 135 are parallel to the dowel studs 120. Consequently, when a raceway is being mounted on or demount ed from the dowel studs by movement lengthwise of the latter, the tongue 134 slides into or out of its interlocking relation in the groove in the head 135, as the case may be, and When the raceway is caught by the latches 121 and thereby held against the outer surface of the frame 20 the pivot pins 126 and 1270f the raceway are maintained in coaxial relation to the rock-shaft 136. "Moreover,

the dowel studs-120 maintain the tongue 134 in the groove member 135 and thus preserve the coupled relation of the raceway and the operating mechanism.

In duplex eyeleting machines in which both eyelets of a pairare inserted by movement toward each other, it is necessary to deliver the two eyelets in relatively reverse positions. That is, the barrels of the eyelets must be toward each other and the flanges must be away from'each other. Moreover, when two series of eyelets are to be delivered respectively to the fastener-inserting devices of a duplex machine, it is desirable'to supply them under identical conditions to insure equal With re-' gard to duplex raceways that receive'both series of eyelets from a common mass stored in a hopper, equality in the feeding of the two series has constituted one problem, and the delivery of the eyelets in relatively reverse positions has constituted another problem. For example, ins'ome prior construc tions the eyelets of one series have been obliged to stand with their flanges at their upper ends to be fed out of the hopper while the eyelets of the other series have been obliged to stand with their flanges at'their lower ends to be fed out. In such cases, the

feeding conditions of the two series have been dissimilar and the 'rate of feeding has therefore been unequal.

In other prior constructions the eyelets of the two series have stood in the same position in a common inclinedpl'ane while being fed from the hopper, but their delivery from the hopper has been at opposite sides of- 'the axis of a rotary brush or feeding member Under these conditions the eyelets delivered from one side of the hopper have been propelled by. downward inclined movement of the brush into the mass of eyelets while those delivered from the opposite side of the hop-, per have been propelled by upward'inclined movement of the brush out of the mass. Here again, the feeding conditions have been diss'imilar and the rate of feeding has therefore been unequal.

With a view to supplying two series of eyelets under similarconditions and with equal rates of feeding from a common mass in a hopper to a duplex raceway, the present invention provides an improvedconstruction which, at the same time, causes the eyelets of the two series to be equally but oppositely inclined as they pass through the outlets from the hopper to their respective divisionsof the raceway.

As shown in Figs; 1 and 18, the lower division 117 of the raceway is all in one inclined plane, while the movable section and the lower portion of the stationary section of the 'upper division 116 are likewise all in one inclined plane parallel to the plane of the division 117. The upper portion 145 of the division 116 and the corresponding portion of the division 117 diverge upwardly and are not only oppositely inclined but have equal steepness or slant. A transverse bend 146 inthe division 116 provides for the divergence and parallelism mentioned above.

The shape of the hopper 115 resembles that of a funnel although its 5 mouth 147 is preferably oblong ;rather than circular. This format-ion facilitates filling the hopper without spilling any eyelets. Its; bottom walls148 (Fig. 24) are flat and oppositely inclined and converge downwardly, their angles of inclination being equal. These walls are screwed against the lower ends ofannular walls 149 by which the massed eyelets in the hopper are localized adjacent to two'feeding brushes. The walls 14.8 are bored to provide bearings for oppositely inclined shafts 150 which extend through them. Each shaft carries a brush 151at its inner end and a ratchet-wheel 152 at its outer end and each is provided with an oscillatory pawl-carrier 153 loosely mounted thereon between the ratchet-wheel and the adjacent wall 148. Each p awl-carrier 153,

carries an operating pawl 154 (see Fig. 23)

and a leaf-spring 155' by which the pawl is held against the ratchet-wheel. The pawl is connected; to the pawl-carrier by a pivot member 170.

The annular walls 149 of the hopper are provided with notches 156 through which the barrels of the eyelets maypass, the teeth between the notches "being spaced from' the bottom walls 148 ,s'ufliciently to clear the flanges of the eyelets that stand with their flanged ends on the wall 148. Eachseries of notches'l56 forms communication from the interior of the hopper to a division of the raceway (see Fig. Each .of' the connect the link 162 brushes 151 is rotated in a direction that I causes'upward travel of the tufts as the latter sweep I the correctly positioned eyelet through the notches or outlets 156, v the con ditions under which the eyelets are fed-out communicates motion through a link 1159 Y to a bell-crank'lever 160. This lever is mounted on the frame 20 bya fulcrum or pivot pin 161.

Two links 162 communicate theto-and-fro movements of thebell-crank i lever to the pawl-carriers 153, respectively' The pivot pins 163 by which these links are connected-to the bell-crank lever are located at points ninety degrees from each other with respect to the. axis of the fulcrum' '161, j

and the links are arranged in crossed relation so that when one of them is-being moved upwardly the other will be moved downwardly. Thus, the brushes 151 will be operated alternately.

The upper ends of the links 162 are preferably formed toprovidefor quickly attaching them to and detaching. them from the pawlcarriers so that the operation of detaching one raceway unit and attaching anotherma-y be facilitated. I

Accordingly, each of the linksis provided with a connecting stud 164 permanently affixed thereto, as shown in Fig.- 25.- The stud is provided with a circumferential groove 165 adapted to receive the'inner'end ofa detent 166 (see Fig. 23) the detent being carried by a leaf-spring 167 attached to the pawl-carrier and normally projectedinto-a socket 168 formed in the pawl-carrier for the reception of the stud 164. The leafspring 167 is extended a. short distance beyond the detent to provide a finger-piece by "which the detent may be retracted rumma e.

the stud 164 whenever itflis desired to; disfrom the raceway'structure. v 1 j Having thus described. the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A fastener-inserting machine comprisng a work-punching device'anda fastenerinserting device arranged side by'side, .a

movable means by which "said devices are vided with heads against'which said'surfacer member arranged to operate said devices operates and said heads being individually adjustable to regulate the strokes imparted to said devices by said member, and mechan sm for lmparting operating movement to said member.

2. A fastener inserting machine comprising a work-punching device and a fastener- I inserting device arranged side by side, a

A of said member, said devices being provided with central screw-heads against which said surface operates and said heads being individually adjustable to regulate the strokes imparted to said devices by said member, and mechanism for imparting operating movement to said member.

3. A fastener-inserting machine comprising two plungers arranged side by side, a punch and a fastener-inserting tool carried by said plungers respectively, a hammer arranged to operate said plungers, screw-heads screwed into said plungers respectively to transmit the operating movements of said hammer to the plungers, said screw-heads being individually adjustable to regulate the strokes imparted to said plunger-s by the hammer, mechanism arranged to shift said plungers laterallyto place said screw-heads alternately in register with a common operating surfaceof said hammer, and mechanism for operating said hammer twice in each cycle of operations.

4. A fastener-inserting machine comprising a work-punching device and a fastener inserting device arranged side by said, an operating member having a surface arranged to act on said devices alternately, movable means by which said devicesare shifted to place themalternately in register with said surface, and toggle mechanism arranged to operate said member with strokes of unequal amplitude.

5. A fastener-inserting machine comprising a work-punching device and a fastenerinserting device arranged side by side, a

hammer having an operating surface arranged to act on said devices alternately, movable means by which said devices are shifted to place them alternately in register with a common area of said operating surface, and mechanism arranged to operate said hammer with strokes having a common terminallimit but different starting points.

6. A fastener-inserting machine comprising a work-punching device and a fastenerinserting device arranged side by side, a hammer having an operating surface arranged to act on .saiddevices alternately,

inovable, means by which said devices are each cycle with a relatively short stroke one limit of retraction for the punching" device and a relatively long stroke from anshifted to place them alternately in register withsaid operating surface, and mechanism arranged to operate said hammer twice in from other limit of retraction for the fastenerinserting device.

7. A fastener-inserting machine comprising a work-punching device and a -fastenerinserting device arranged side by side, a hammer having an operating surface arranged to act on said devices alternately, movable means by which said devices are shifted to place them alternately in register with said operating surface and thereafter to feed the Work, and toggle mechanism arranged to operate said hammer twice in each cycle with a dwell of the toggle adjacent to its deadcenter position during the second operation in each cycle.

8. A fastener-inserting machine comprisat one side of the dead-center position for roperating the punching device and a relatively long distance at the opposite side for operating the fastener-inserting device.

9. A fastener-inserting machine comprising a workpunching device and a fastenerinserting device arranged side by side, ahammer having an operating surface arranged to act on said devices alternately, movable means by which said devices are shifted to place them alternately in register with said operating surface, a toggle arranged to operate said hammer, and mechanism arranged to move the knee of said toggle to and from the dead-center position twice in each cycle first with a relatively short, operating stroke for the punching device and thereafter with a vrelatively long stroke for the fastener-inserting device. 7'

10. A fastener-inserting machine comprising a work-punching device and a fastenerinserting device arranged side by side, a hammer for operating said devices alternately, movable means by which said devices are 1 shifted laterally to place-them alternately at -a,coinmon operating locality, a toggle arranged to operate said hammer, and mechanism arranged to move-the knee of said toggle in one direction across the dead-center position to operatethe punching device and in the opposite direction to operate the fastener-in-e sorting device, the limits of travel of said knee being unequally distantfrom the dead-center position, in consequence of which the hammer is operated with alternate short and long strokes.

livA duplex fastener-inserting machine comprising a pair of opposed fastener-inserting devices and a pair of opposed workpunching devices, twoopposed members arranged to operate said punching devices respectively, a double-acting toggle arranged iis between and connecting said members, and mechanism arranged to operatesaid toggle.

12. A duplex fastener-inserting machine comprising a pair of opposed fastener-insertingdevices, two opposed members arranged to operate said devices respectively, a :doubleacti-ng toggle arranged between and connecting said members, and mechanism arranged to operatesaid toggle.

'pn-nching devices, two opposed levers ar ranged to operate said punching .devicesrespectively a slide and means by which itis guided, mechanism arranged to reciprocate said slide, and toggle-links connecting said slide and said levers respectively to impart operating movements to the levers.

15. A duplex fastener-inserting .machine comprising a pair of opposed punching de vices, a pair of opposed fastener-.insertmg devices arranged beside the punching devices respectively, two .opposedrhrammer-sarranged to operate the punching devices :and the fastener-inserting devices alternately, movable 'mea-ns by which said devices are shifted to Y place said pairs alternatelyat a common operating locality, .a double-acting toggle .ar ranged between and connectingsaid hammers, and mechanism arranged to operate said toggle.

16. A duplex fastener-inserting .n achine com risin a'oair ofo osed annchin' de vi'ces, a pa r of opposed iastener-inserting-devices arranged "beside the punching devices respectively, two opp osed hammers-arranged to operate the punching devices and the i astener-inserting devices alternately, movable means by which said: devices are shifted to place said pairsalternately .at a common operating'locality, a double-act ng toggle arranged between and connecting said."hammers, and mechanism arranged to operate said toggleby movingit back and forth, across its dead-center position.

17 A duplex iasteneninserting machine comprising a pair of opposedpunchin g devices, a pair of opposed fastener-inserting devices arranged beside the punching devices respectively, two opposed hammers arranged to operate the punching devices and thefastener-inserting devices alternately, movable meansby which said devices are shifted to placesaid pairs alternately ata common operating locality, adouble-acting toggle arranged between. and connecting said :hammers, .and mechanism arranged to operate said toggle byg'moving it, back and forth acrossits dead-center position to points -un-' equally distant from said position.

18. A duplex fastener-inserting m-aclii ne comprising a pair of opposed punching devices, a pair of-opposed fastener-insert ng devices arranged beside the punching devices respectively, two opposed hammersarranged to operate the punching devices and the fastener inserting devices alternately,.

movable means by which said devices are shifted to place said pairs alternately at. a

common operating locality, a'double-acting togglearranged between and connecting said hammers, means arranged to guide the knee of said toggle, and mechanism arranged to operate the toggle by reciprocating the knee thereof. p I v I 19. A duplexfastener-inserting machine comprising a pair of opposed punching devices, a pair of opposed fastener-inserting devices arranged beside the punching devices respectively, two opposed hammers arranged to operate the punchingdevices and the fastenerrinserting devices alternately, movable means by which said devices are shifted to. place said pairs alternately at a common operating locality, a double-actingtoggle arranged betweenand'connecting saidhammers, means arranged to guide the knee of said toggle along a straight path, and mech- 1 anism arranged to operate the toggle by reciprocating the knee thereof.

20. duplex fastener-inserting machine comprising a pair of opposed punching devices, a pair of opposed fastener-inserting devices arranged beside the punching devices respectively, two. opposed hammers arranged to operate the punching devices and the fastener-inserting devices alternately, movable means by which said devices are shifted lat erally to place said pairs alternately at a common operating locality, a double 'acting toggle arranged between and connecting said hammers, a slide forming the knee of said toggle, means for guiding the sl dealong a straight path, and mechanism arranged to operate the toggle by reciprocating said slide.

21. A fastener-inserting machine comprising apunching device and a fastener-insert- -1ng device arranged side by side, means by which said devices are shifted laterally to place them alternately at a common operating locality, a hammer ar ranged tooperate said devices alternately, a toggle arranged to operate said hammer, mechanism arranged to operate said toggle by moving it to and from ts dead-center position twice in each cycle with a dwell adjacent to said position between the start and finish ofthe second operation there'ofiand mechanism arranged to move said inserting 'device laterally during said dwellto', iee'd'the work, said hammer having a locality, a hammer arranged to operate said devicesalternately, a toggle arranged to operate said hammer, mechanism arranged to operate said toggle by moving it twlce across its dead-center position in each cycle with a r dwell adjacent to said position between the start and finish of its return movement, and mechanism arranged to feed theworlr by movingsaid fastener-inserting device laterally during said dwell, said hammer having a portion arranged to maintain said inserting device against an inserted fastener during said dwell. I r

23. A fastener-inserting machine comprising a hammer, mechanism arranged to 0p crate said hammer twice in each cycle by advancing it first from an initial intermediate position to a common limit of motion, then retracting it beyondits initial position", then advancing it a second time to said common limit, and thereafter retracting it to but not beyond said initial intermediate positioma punching device and a fastener-inserting device arranged side by side, means by which said devices are shifted laterally to place them alternately in register with a common operating portion of said hammer, means arranged to retract said devices, and means a1 ranged to present a fastener to said inser ing device.

24:. A fastener-inserting machine comprising a hammer, mechanism arranged to open said hammer twice in eachcycleby advancing it from an initial intermediate position to a common limit of motion, then retracting it beyond its initial position, then advancing it a second time to said common limit, and retracting it to an intermediate position of dwell adjacent to said common limit, a punching device and a fastener-inserting device arranged side by side, means by which said devices are shifted laterally to place them alternately in register with a common operating portion of said hammer, means arranged to retract said devices, means arranged to present a. fastener to said inserting device, and means arranged to impart work-feeding motion to said fastenerinserting device while the hammer is in said intermediate position of dwell.

25. A fastener-inserting machine comprising ahamnier, mechanism arranged to operate said hammer twice in each cycle by advancing it first from an initial intermediate position to a common limit of motion, then retracting it beyond its initial; position, then advancing it a second time to said common limit, retracting it to an intermediate position only slightly distant from said common limit and maintaining adwell at that intermediate position, and thereafter retracting it from said position of dwell, a punching device and a fastener-inserting1 device arranged side by side, means by which said devices are shifted laterally to place them alternately in coop,era-- tive relation to said hammer, means arranged .to retract said devices, work-feeding mechanism arranged to operate by moving said in serting device laterally while the hammer is at said position of dwell, and means arranged to present a fastener to said inserting device.

26. A fastener-inserting machine comprising a hammer, a toggle arranged to operate said hammer, mechanism arranged to operate said toggle by shifting the lrnee thereof from an initial position at one side of dead-center to a position at the opposite side, shifting said knee in the opposite direction across dead-center to an intermediate position only slightly distant from dead-center and maintaining a dwell at said intermediate position, and thereafter shifting the knee in said opposite direction to its initial position, a punching device and a fastener-inserting device ar ranged side by side, means by which said devices are shifted laterally to place them alternately in cooperative relation to said hammer, means by which said devices are retracted, means arranged to present a fastener to said inserting device, and work-feeding mech anism arranged to operate by moving said inserting device laterally while the toggle-knee is at said position of dwell.

27. A fastener-inserting machine compris ing a punching device and a fastener-inserting device arranged side by side, means by which said devices are guided lengthwise, a reciprocatory member to which. said guiding means is connected by a pivotal joint and by which said devices are shifted to place them alternately at a common operating locality, work-feeding mechanism including a member movable about a fixed axis with which the axis of said pivotal joint coincides during the feeding period, means forming an articulate operating connection between said work-feeding member and said guiding means, and mechanism by which said devices are operated alternately and by which saidinserting device is maintained against a clenched fastener during the feedmg stroke imparted to said guiding means.

28. A fastener-inserting machine comprisingguidmg means, two slides arranged in tandem relation thereon, two individual mechanisms arranged to reciprocate said slidesrespectively, a punchingdevice and a fastener-inserting device arranged side by side, means carried by one'of saidslides to shift said devices laterally to and from a common operating locality, and means oper-

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