US1635627A - Machine for operating on shoes - Google Patents

Description

S. P. LOVELL MACHINE FOR OPERATING ON SHOES July 12, 1927. 1,635,627

' Original Filed Aug. .29, 1923 2 Sheets-Sheet l July 12 1927.

s. P. LOVELL MACHINE FOR OPERATING ON SHOES Original Filed Aug. 29, 1923 2 Sheets-Sheet Patented Jul 12, 1927.-

UNITED STATES PATENT OFFICE.

STANLEY P. iLOVELL, OF BROCKTON, MASSACHUSETTS, ASBIGNOR. TO UNITED SHOE MACHINERY CORPORATION, 'OF PATERSON, NEW JERSEY, A CORPORATION 01 NEW JERSEY,

original application filed August 29,

The present invention relates to the manufactureof boots and shoes and more particularly to the automatic treatment and sup ly- 'ing of shoe-parts,

and while in that condition may be assembled on the last with the other shoe parts and pulled-over or lasted to give it the desired shape, which it will retain after drying out.

orcooling. I

. It is the ,object of the present invention to provide a conditioning machine for box toes and-similar shoe parts which will automatically deliver a conditioned or treated box toe to the operator with-each ulling-over or lasting operation, .so'that tie operator will automatically'be provided with a conditioned box toe with each cycle of opera tion of his pulling-over or lasting machine.

' With this'andother objects in view, as will be apparent to those skilled in the art from the following specification, the present invention consists in the devices and combination of devices hereinafter described and particularly defined in the claims. 1

In the accompanying drawings which illustrate what is now considered to be the preferred form of apparatus embodying the present invention, Figure 1 is ,a longitudinal sectional elevation of the treating and conditioning mechanismyFig. 2 is ahorizontal sectional view on the line 2-2 of Fig.

1; Fig. 3 shows in enlarged elevation the separator and feed slideand plate; Fig. 4.

is a plan, partly in section, of the combined pulling-over andeonditlonin machine;

and Figs. 5 and 6 are details 0 the driving and controlling devices for the conditioning mechanism.

In the illustrated embodiment of the pres? ent invention the conditioning mechanism is located in close proximity to the pullingover machine so that there may be a common drive and control. This arrangement pro- MACHINE FOB OPERATING ON SHOES.

1928, Serial No. 659,922. Divided and;th1| application lflled April 4, 1924. Serial No. 704,208.

vides for the delivery of the treated or conditioned box toes at a point convenient for the operator of the pulling-over machine and as fast as the operator can use them, one

conditioned box toe being delivered for each complete cycle of operation-of the pullingover machine.

The conditioning mechanism, as illustrate ed in Figs. 1, 2 and 3, comprises a closed chamber 1 having a top 2, bottom 3, sides 4, and ends 5." An open tank or rece tacle 6 is provided within the chamber for olding the treatin or conditioning liquid and through whlch the box toesare passed while supported bythe endless belt or conveyor 7.- This belt is preferably formed of leathe'r having on its supporting face a multi licity of upstanding wires 8, like card 00th-- ing. The conveyor isc'arried by the drivlIl pulle 9 and idlers 11 and 113, the'latt'er being ad ustable by means of'the swingin supportin arm 14 to providev the desir amount 0 slackness in the conveyor so that it may dipbeneath the surface of the liquid in the tank 6. The driving pulley 9 on the shaft 15 is given successive single revolu tions by mechanism hereinafter to be described,to advance the belt or conveyor 7- in the direction of the arrow, in intermittent successive movements.

The box toe blanks are delivered to'th blanks under suflicient pressure to insure the proper separation and feeding of the-lowermost blank from the stack by the feeding mechanism. This comprises a blade 18 mounted upon a slide 19 and actuated by means of a link 20 and a crank 21 on thedriving shaft 15. The blade 18 is formed with a square front end 24, over-hanging which is the separator having a bevelled edge 25. The blanks are stacked in the mag azine with the skived or bevelled portions in therear, and Itheseparator edge 25' entering between the skived or bevelled edges of the lowermost and the mext adjacent blanks, separates the former from the stack and permits the square end 24 of the blade 18' to feed such lowermost blank from beneath the stack and through a throat 27 onto the conveyor 7 with each revolution of the shaft 15,

11 order to hold the blanksin contact liquid in the tank 6, two narrow downwardly-bowed spring members 29 are mounted on the bottom of the-reservoir 31 for the treating liquid. This reservoir is supported upon the horizontal portion of the top of 2 of the chamber 1 and isprovided on its bottom with a depending pipe 32, the lower end of which is just beneath the surface of the liquid in the tank 6. An air tight filler cap 33 permits the automatic flow of liquid from the reservoir 31 into the tank 6 in a well-known manner, to automatically maintain a constant level of liquid in the tank. A valve in the pipe 82 controlledrby the thumb nut 34 may be closed whenever it is desired to refill the reservoir or to remove the same bodily from the top of the conditioning mechanism where it rests in the seat or recess formed b the upstanding flange 35.

The treated or conditioned blanks are delivel'ed onto a table or bench 36 through an opening in the chambcnnormally closed by the hinged door or gate 37. A springfinger 38 mounted within the chamber adjacent the door acts to hold the rear end of the blank in contact with the conveyor as the latter is carried around the pulley 11, not only thereby tending to free the front end of the blank from the conveyor, if there is any adherence, but also insuring the opening by the blank of the self-closing gate or door 37. A comb 39 fixed upon the table or bench 36 is also provided to separate any adhering blank from the conveyor, the teeth of the comb entering between the supporting wires of the conveyor and beneath the blank held thereon.

The bottom 3 of the chamber 1' is formed with a depression 40 to collect and retain the excess of liquid which drains or drips from the blanks as they pass from the tank 6 to the point of discharge. A draw-oft cock 41 permits the withdrawal from time to time of this accumulation of this excess.

Except for the narrow throat or opening 27 through which untreatedblanks are delivered to the conveyor and which is practically closed at all times either by a blank or the feed plate, and the normally closed discharge opening, the chamber 1 is substantially air tight, thus preventing the escape into the atmosphere of vapors of the treating liquid. This is a feature of importance, not only because this escape would means a loss and waste of the treating liquid, but also be.- cause such liquid consists of, or is composed of, alcohol or naphtha or similar liquids which form inflammable and explosive gases. Furthermore, this feature permits an atmosphere saturated with the treating liquid to be maintained within the chamber 1, thereby insuring the delivery of properly conditioned box toes irrespective of how long aaaaav a time beyond the minimum the treated blanks may be retained in the chamber. De lays are often experienced in the pullingover operation and the work may be stopped.

altogether, yet owing to the saturated atmosphere within the enclosed chamber the evaporation of the liquid from the treated blank is prevented and hardening of the box will not occur.

In the treatment of the box toe blanks by the conditioning liquid itis desirable that the blank be dipped into the liquid only momentarily, for otherwise the stiffening compound in the blank might be dissolved or otherwise aiiected. Accordingly, the actuating mechanism for the conveyor or belt is so arranged that a blank will be delivered from the magazine onto the conveyor belt with one rotation of the shaft 15. On the next rotation this blank will be assed into and out of the liquid in the tan On the next rotation of the shaft 15', the blank will be advanced toward the discharge opening but which, in the construction shown in Fig. 1, it will not reaclruntil the fourth revolution of the shaft, when itwill be delivered onto the table 36 in convenient position forthe operator. Fig. 1 illustrates the position of the blanks while the shaft and conveyor are stationary, blank a having just been delivered from the magazine onto the conveyor, blank b-having been passed through the tank and the excess liquid draining ofi', blank 0 being properly conditioned and kept so by the saturated atmosphere within the chamber.

After a box toe has been properly conditioncd it is ordinarily assembled with the up per and insole upon the shoe last and is then subjected to the operation of a pulling-over machine which roughly stretches and pulls the upper over and around the last and so cures it in position by means of tacks preparatory to the lasting operation. In order to insure delivery of a properly conditioned box toe \vltlnnconvenlent reach of the operator oi the pulhngover machine, it is desirable to locate the conditioning mechanism adjacent the pulling-over machine and to control the operation of the conditioning mechanism so that with each cycle of operation, of the pull1ng-over machme there w1ll be delivered a single conditioned box toe.- In the illustrated embodiment of the presentinvention, such an arrangement is shown in Fig. 4 in which the conditioning machine is located at the side of, and close to, a pullingover machine of-the type illustrated in the McFeeley Patent No. 663,777, dated December 11, 1900, only so much of the base and Inn carries the driving shaft 44 u on which is,

fixed the driving pulley 45 having afriction -'face or flange 46. A smaller pulley for driving the instrumentalities "on the upper part a or head of the machine is shown at 48 and has a corresponding friction face orflange 49 for engagement with the flange 46 of thedriving pulley when the lose pulley 48 is moved longitudinally ofthe shaft 44. The devices for moving the'loose pulley may be as shown inthe McFeeley patent, comprising the treadle 51 with'the vertical treadle rod 52 and the wedge rod 53, and the other connections and devices as shown in said McFeeley patent. These connections and devices are such that depressing the treadle 51 causes the pulley 48 to be given a single revolution and then to be stopped. This single revolution of the pulley 48 imparts a half revolution to the main shaft on the head of the machine, its pulle being double the size'of the pulley 48, and uring this half revolution the grippers seize the upper and pull the same over the last. In the dwell which follows this operation, the operator may readjust the grippers or the upper upon the .last after which the collar 84. The inner end of the pin is he will im art a second depression to the the head, during'which the tacks are driven, all as shown and described in said McFeeley patent.

Itwill be observed that in the operation of this pulling-over machine twoactuations of .the treadle are necessary tocause the machine to make a single complete cycle of operations.

In theillustrated embodiment of the present invention, the driving and controlling device's'for the conditioning machine are as follows. Fixed u on the'rear end of the driving shaft 44 0, the pulling-over machine is a small grooved driving pulley 55 for drivingthrough-the belt 56 the pulley 57 on the counter-shaft 58 of the conditioning machine. This counter-shaft rotates continuously in the bearings 59 in a bracket secured to the side of the conditioning machine and carries at its front end a bevelled gear 61, a Horton ballor roll clutch being interposed between the gear 61 and the shaft 58. inion- 63 fixed upon the shaft 15 0f the conitionin machine is engaged by thegear 61.

In or er to impart a single continuous r0 tat-ion of the pinion 63 and shaft 15 of'the conditioning mechanism for each two actuations of the treadle of the pulling-over ma chine, the gear 61 is of the intermittent or' mutilated ty e'as shown in Fig; 5; that is, d with teeth 65 for exactly oneit is provide half of its face, the other half 66, being blank and cut away to clear the teeth of the pinion '63, The gear 61 being justtwice the diamthe other to t portion 66 of the gear 65- is passing the pinion 63 will be without effect, but on-the second half revolution of the gear a complete revolutionwill be imparted to the pinion. and

eter of the pinion 63, thefirst half revolution of the countersshaft while the cut away shaft, the gear teeth 65 then being in mesh with the teeth of the inion,

The intermittent ha f revolutions are iven to the counter-shaft 58 by means of the orton clutch, the collar'68 of which has oppo sitely disposed stop shoulders 69 and 70. A I

vertically movable rod 72, mount ed in the bracket 59 on the conditioning machine, is raised with each actuation of the treadle 51 by means of a rigid connecting bar 7 4'fixed at one end u n the treadle"52 and at e sleeve 75. to the rod case in asleeve 79 loose upon, the-rod 72 but held from turning thereon by means of a spline or key 80. The pin' is normally pressed outwardlyby means of the spring 82' its outward movement being limited by gevelled at 86 to engage a notch 87 in the rod When the parts, are in the position as shown in Fig. 6, if the treadle 51 is depressed the sleeve. 75 will be raised carrying with it the rod 72 and the ahutment'pin 77 and sleeve 79. The instant the abutment pin rises above the stop shoulder 69, the 7 clutch is engaged and the bevelled gear 6l set' in operation. The disengagement of the pin H 77 permits the. spring 82- to act, forcing the pin outwardly-and its bevelledend 86 out of-the notch'87, leaving the sleeve 79:free to drop upon the rod 72 thereby bringing the above described of the 'treadl'e. 51 was the first actuation, the blank portion 66 of the gear 61 will at this time have passed beneath and the shaft and theentireconditioning mechanism will remain stationary.

As soon as the operator releases the treadle, the rod 72 will fall'and the notch 87 will again be engagedby the bevelled shoulder 86' of the abutmentpin 77.v Upon abutment pin 77 into'the-p'ath-of the second sto lis the teeth of the pinion 63, and the pinion the second actuation of the treadle the parts will be raised as before, .the clutch collar released, and the clutch closed vfor one-half a revolution of the counter-shaft, and during this second half-revolution of the countershaft the teeth 65 on the gear 61 will engage 7 the pinion 63 and impart onecomplete revolution to the shaft of the conditioningmachine, causing a new blank to be delivered from the magazine the blank delivered on the last previous actuation to be passed through the conditioning liquid, thepreviously treated blank to be advanced, and a properly conditioned blank to be delivered from the conditioning mechanism onto the bench or table ready to be assembled with the upper preparatory to the next pullingover operation.

Thus for each two actuations of the treadle a single movement is imparted to the conditioning mechanism and a single conditioned box tee is delivered to the operator. While the accompanyin drawings and the foregoing specification ascribe a specific form of mechanism designed and adapted for treating or conditioning boxtoe blanks by means of a liquid, it is to be understood that the present invention, except where so specilied in the claims, is not limited to the use of such a softening agent but may be embodied in other forms of mechanism for treating or conditioning box toes in other we 's.

*urtherniore, where in the claims the word conditioning has been employed, this is to be understood as not necessarily limited to the softening of a previously stifiened box toe blank but as defining and including any treatment or preparation of the. box toe blank or other shoe part, Nor are the claims to be limited to a construction embodying a pullingovcr machine except where such machine is specifically included, but are to be construed to cover any machine for operat ing upon shoes or shoe parts which have undergone a preliminary treatment or reparationto put them in a proper con ition for use.

The specific construction of conditioning mechanism illustrated in the accompanying drawings, and above described, is not claimed herein as it forms the subject-matter oi another application filed by me on August 29, 192 Serial No. 659,922, of which the present application is a division.

Having thus described the present-invention what is claimed is:.

1. The combination with a machine for operating-on shoes, of mechanism for treating shoe parts preparatory'to said operation, and devices associated with said machine for delivering at a point convenient to the hand earner tor a shoe part for each cycle of operation of the machine.

3. The combination with a machine for operating upon assembled shoe parts, of mechanism for treating a shoe part prepa z tory to said assembly and operation, controlling devices for said machine arran ed to be actuated by the operator a plum ity of times for each cycle of operation of the machine, and means operating automatically to deliver a treated shoepart on each cycle of operation of the machine for the next assembly and operation of the machine.

4..lhe combination with a machine for operating upon shoes, of mechanism for treating shoe parts preparatory to said operation, controlling devices for the machine in cluding a trcadle arranged to be actuated bythe operator a plurality of times for a complete cycle of operation of the machine, means for delivering the treated shoe parts, and controlling devices for said means connccted with said trcadle and operative only on the last actuation of the treadle in each complete cycle of operation of the machine to cause said means to deliver a treatedshoe part.

The combination with a pulling-over" machine, of a box toe conditioning machine, and mechanism operating automatically to deliver a conditioned box toe for each cycle of operation of the pulling-over machine.

(3. The combination with a pulling-over machine, of controlling devices includingv a trcadle adapted to be actuated a plurality of times for each cycle of operation of the ma chine, a box toe conditioning machine, and means connected to said treadle tocause the conditioning machine to deliver a single box toe for each cycle of operation of the pullin -over machine.

The combination with a pulling-over machine having a treadle adapted to be actuated a plurality of timesfor each cycle of operation of the machine, oi a box toe conditioning machine, and devices connected with said treadle and operating automatically to deliver a conditioned box toe upon one predetermined actuation of the treadlc in the cycle of operation of the pulling'over machine.

8. The combination with a pulling-over machine having a treadlc for controlling the same arranged to be actuated a plurality of times for each cycle of operation, of a box toe conditioning machine and controlling devicesfor the conditioning machine associated with said treadle for causing the conditioning machine to deliver a single conditioned box toe for each cycle of operation of the pulling-over machine.

In testimony whereof I have signed my name to this specification.

STANLEY P. LQVELL.

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