US1248051A - Grinding and polishing machine. - Google Patents

Description

H. D. AGNEWh GRINDING AND POLIS HING MACHINE.

nrrucmbu rim) JULY 5.191s.

Pabentd NOV. 27, 1917.

l0 SHEETS-$HEET I.

'H. ILAGNEW. GRINDING AND POLISHING MACHINE.

APPLICATION FILED IULY 5,1915.

Patented Nov. 27, 1917.

H. D. AGNEW. Gnmmms AND POLISHING MACHINE.

APPLICATION FILED JULY M1916- Patented Nov. l0 SHEEIS-SHEIT 3- IAII H. D. AGNEW GRINDING AND POLISHING MACHINE.

APPLICATION FILED IULY 5.191s.

1,248,051 PatentedNov. 27, 1 911.

1 1o suns-sun 4.

,l. n. AGNEW GIIIDIIG AID POLISHING MACHINE.

APPLICATION "LED IULY 5.19M.

Patented Nov. 27, 1917.

(-W PD war I H. D. AGNEW.

GRINDING ANDROUSHING MACHINE.

APPLICATION run my 5.19".

Patented Nov. 27, 1917.

M) SHEETSSNEET 6- a Q n. 0. Miami GRINDING ANDIOLISHING MACHINE.

APPLICATION HLID Jul-Y 5 ill.

Patented Non-27, 1917 l0 suns-sun s.

H. n. AGNEW. GRINDING AND POLISHING MACHINE.

m I91 9- 7 m Mm N: G? E 0 H I I N 3: m m NQ m P v m \INH 5. nww $3M. w mm MG: I I I m: g n m m V m QNN NM QM! m MM n m H W in A E N V G N 11 N W B I @mmx mqj G .n 1 m 5 F 0 \MQNI ON 2 Q 1 Patented Nov. 27, 19,17.

H. D. AGNEW. (mmomc m rousnmu MACHINE.

APPLICATION FILED JULY 5.1915.

- UNITED STATES "PATENT OFFICE.

HENRY D. AGNEW, F OAK PARK, ILLINOIS, ASSIGNOR TO WESTERN ELECTRIC COM- PANY, INCORPORATED, OF NEW YORK, N. Y., CORPORATION OF NEW YORK.

GRINDING AND POLISHING: MACHINE.

To all whom it may concern:

Be it known that I, HENRY D. Acnnw, a diameters.

citizen of the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Grinding and Polishin Machines, of. which the followin is a fu 1, clear, concise, and exact description.

This invention relates to a machine for grinding and. polishing rods or tubes of materia such ashard rubber, fiber, or the like.-

1 In the electrical art, particularly tesulating bushings, thim ating handles or buttons which are usually of'hard rubber, and a reat number of iniles, disks, washers, etc, are utilized. Such insulating parts can radily'becut from hard rubber rods or tubes and then readily turned down to exact shape when necessary. Some-of these insu-- lating devices, particularly the handles or buttons for circuit controlling mechanisms,

should be ground down and polished in order to. rovide smooth surfaces for the fin-- gers. he object of my invention is therefore to. produce an efficient machinefor rapidly grinding and polishing the outercylindrical surfaces of rods or tubes from which the insulating devices are cut.

Generally speaking, the machine is con-' structed with a hopper to receive the charge of rods or tubes, from which hopper the lephony, the various manually operated .switch mechanisms are provided with actutheir cylindrical surfaces smoothed and 1901- ished, the finished rods being then cut transversely to produce the sleeves, disks, washers or. the like, or to produce blanks which areturned down toform the handles or buttons for manually operated circuit cross-section are mounted in parallelism on devices.

Specification 01'. Letters Patent. Patented Nov, 27, 1917 Application filed July 5, 1916. Serial No. 107,596. i

the treatment of rods or tubes of diifere'nt A machine embodying the various features of the invention is represented on the accompanying drawings in which- F gured is aplan view of the machine, F g. 2 1s a front'elevational viewthereof, F1g. 3 1s a side view looking from the n left, A FFig. 5 is a sectional view on plane 5 5,

s. 1 and 2, ig. 6 is an enlarged plane 6 6, -Fi Fig. -7 is :1. pl 2 and 6, V 4

Fig... 8. is a sectional. view on plane, 8 8, Figl'7, Fig. 9 is an enlarged sectional view on plane 9 -9,'Fig. 4,

sectional view on Fig. 10 1s an enlarged sectional view onplane 10-10, Fig. 5,

Fig. 11 is'an-en'larged sectional view on .plane 1111,Fi .5, Fig. 12 is a side view of the supporting head and stem shownin Fig. 10,

Fig. 13 is' a side elevational view ,of a modified form of guide block,

Fig, 14 is an enlarged swtional view on plane 1414,-Fig. 1, i

Fig.' 15 is "a. sectional view on plane 15-45, Fig.'14,

view .on plane rollers" with triangular ht igi. 4 is-a side view looking from the 2 an view on plane 7-T, Figs.

Fig. 16 is a sectional View on plane The supporting frame for the machine comprises the front section 1 on which the chute and chuck members are mounted, and the section 2 on which the indstone is mounted. On the framesectmn 1 at the right end. thereof the ho i r' structure H is mounted. Beams 3. and of' right-angular top of the frame part 1 at the right end Provision is also made for adjusting the thereof with their vertical sides 5 and 6 hopper, the chucks, and the grind-stone for separated to provide the space 7 for a belt 8 which is carried by pulleys 9 and 10 on shafts 11 and 12 respectively, which are journaled in the beam sides and G. On the horizontal flange of the beam 3 is mounted a plate 13 which supports a row of brackets 14 to which the one side 15 of the hopper H is secured. The horizontal flange of the beam 4 carries aplate 16 on whichis mounted a row of braclmts 17 for supporting the other side wall 18 of the hopper. The upper sections of the hopper sides deflect outwardly but the lower sections are parallel and separated to leave the verticalpassageway 19 for the tubes or rods R to be treated. The upper limb of thebelt runs along directly below the passageway 19 to receive the rods and to convey them one at a time to chuck mechanism which will be described later.

shafts extend 'parall'elly outwardly and As shown, the middle.

In order to. feed the rods one at a time to the belt escapement mechanism is provided. The side wall 18- of the hopper has pivot to a bar 31. crank arm is extended beyond its plvota-l connection with the bar 31 and has piiotal connection with one end of a connecting rod I nately swung awa from and below the next 32, the other end of the rod being pivoted to the crank pin 33 on a gear 34: which meshes with a pinion 35 on the belt pulley shaft 12. As this shaft turns, the gear 34 will be rotated. and the middle crank arm will .be rocked, such rocking movement being transmitted to the other crank arms by the bar 31. The angular spacing of the escapement blades on the shaft collars and the angle of rock is such that the blades 25 and 26 will alternately enter through the openings 20, the lower blades being swung alternately below and away from the lower most rod and the" upper blades being alterrod. such operation restricting the rods to drop one by one to the bottom of the passageway 19 to the conveyor belt. The wings 29 at the upper ends of the shafts are alternately swung into and out of the openings 20 to agitate the rods and to prevent pack ing orvjamming thereof.

At the inner end of the passageway 19 adjacent the lower end thereof are the feed, rollers 36' and 37 whose surfaces are conicalin order. to readlly receive between them-.

the inner ends of the rods, as clearly shown in Fig. G. The feed roller 36 is pivoted on shaft 38 supported on the rear hopper section, while the other roller 37 is secured to shaft 39 supported on the front hopper section. At its lower end this shaft carries a bevel gear 40 which meshes with the bevel 7t with the gear secured on the inner end of counter shaft 51, this shaft being journaled in the bracket structure 48 and in the outer wall of supporting fraine section 1, the outer end of the shaft carrying a gear 52 which is engaged by the pinion 53 on the outer end of the main shaft 54. This main shaft carries the gear 55 driven by the pinion 56 on the shaft of electric motor M .mounted within .the frame section 1. Bo-

tation of shaft 11 results in propulsion of the belt 8, operation of the escapement mechanism and drive of the feedrollers 36 and 37, these rollers coiipera-ting with-the belt to shift the rods longitudinally toward the left into the chuck mechanism in which they are rapidly rotated in front of a grinding stone. In order to keep .the belt tight have shown belt tightener mechanism. As best shown in Figs. 2 and 6, the arm 57 mounted on the shaft 58 journals at its front end the roller 59, and depending from the shaft at the rear end thereof is the arm 60 engaged by the pull bar 61 which is en-J'- circled by a spring 62 abutting between t-h'e nut 63 on the rod and the bracket 64, the i arrangement being such that the roller'59 is held pressed against the lower leg of the belt.

The rods are fed one at a time into the chuckmechanism and are fed slowly through T' the chuck mechanism and during transit therethrough are rapidly rotated while they are being ground. Chucks 65 and 66' are mounted on the inner ends of. hollow shafts 67 and 68 respectively, these shafts being journaled in bearing frames 69 and 70 mounted on the frame structure 1, as clearly shown in Figs. 1 and 2. The shafts carryrespectively the gears 71 and 72 which mesh with intermediate gears 73 and 74 driven by the gears 5 and 7 6 on the counter shaft 77, a. gear 78 on this shaft meshing with the gear 79 on the main shaft 54 whose driving gear 55 meshes with the motor pihion 56. The shafts being hollow and coincident with the path of the rods delivered from the chute, the rods enter shaft 67 and then pass through the chucks 65 and 66 and-then The driving 76 60 is shown.

A 84- of the disk 81,

wheel 87.

sak favorns 92 and 93 which mesh through shaft'68 from which they are delivered, the entrance end .of the shaft 07 being preferably provided with a beveled entrance thimble 80. of substantially identical construction and in Figs. 14 to 18 the construction of chuck The main supporting disk 81 of the chuck has the internally threaded flange 82 extending therefrom concentric with its center and receiving the threaded inner end of the hollow shaft (38, a thirnble 83 extending into the shaft end and having threaded engagement in thethimble having a comcal bore for guiding rods' into' the shaft 68.

Journaled on the shaft 68 is a hub 85 which at its inner end supports the gear 86 and which at itsouter end supports the sprocket At diametrically opposite sides of the gear 86 the shafts 88 and 89 are journaled in the disk 81 and carry respectively gears 90 and 91 which mesh with the gear At their inner ends the shafts support wheels 94 and 95] respectively. Thefworm 'ournaled in the brackets 97 and 98 extendtiont, he axes "mg inwardly from the disk 8l." Likewise; r r worm wheel 95- is mounted on the of disk 81 and extending at rightangles jonrnal'edinbrackets 100 and 101 extending wardly {from the disk, ball bearings 102 0 and at equal distances to one side of the center ofthe disk 81-. .Secured to the inner face with the axis of shaft 90- are the guide blocks 103 and 104 in which the plate 105 is slidable radially 'on the disk and from the inner 4e frames 1% anch end of the plate at the sides thereof bearing 107 extend at right angles and are connected by a yoke 108. Centrally of this yoke isthe pocket109extending ra- V dially outwardly for receiving a compression spring 110, the other end of the spring resting in the pocket of a plug 111 having threaded engagement with the annular shelf 1-1'2 extending inwardly from the disk 81.

T he. spring by'acting against the yoke tendsto force the plate 105 radially inwardly and the bearing frames thereon. In frame 106 is a ball bearing 113 which receives the hub 114, 11.3 vvhi 1 receives the hub' 110. A shaft 117' extends centrally through the hub 11.6 and at its inner enr has threaded engagement v with the hub 114, and between the hubs the shaft supports the feed roller 118. The inner end of hub 114 carriesa coupling head 119' and the adjacent end of shaft 96 carries a coupling head 120, the coupling head I'm-having coupling pins 121 for engaging in the holes 122 of the coupling head 120 and the coupling head 120 having coupling The two chucks are the central opening.

tion, with worm 'refera'bly provided to reduce fric-- the shafts are parallelgaging in cross while inframe107 is the ball bearing pins 123 for engaging in the holes 124 of the coupling head 119. \Vith this arrangement tli' rotation of shaft 90 is transmitted to the hubs andto shaft 117.

Diametrically opposite the guide blocks 103 and 104 are similar guide blocks 103' and 104for a plate105' which carries the bearing frames 100' and'lOT' connected by a yoke 108, a spring tendin to force the plate with the bearings ra ially inwardly; The bearing, frames journal the hubs 114 117', the arrangement being exactly the same as in connection with the shaft 117, the shaft 117' being connected with the shaft 99 by thecoupling heads 119 and 120.; Between the bearing frames the shaft 117 journals the feed roller 118, this feed roller' being in' the same/radial, plane as the roller and which receive the shaft 118 and the rollers'having the peripheral ooves 125' and 125' respectively which, in Fi 15, are of semi-circular cross-sece opposed grooves cooperating to 1eceiv'e and engage with "the cylindrical sides of the rods R traveling therebetweenh The semi-circularg'rooves of'the'rollers in the first chuck through which the-rod is fed, are knurled to insure ,a firm grip j on said rod. -,The corresponding grooves in the roller in the second chuck are smooth 'to avoid marringithe smooth surface ofsaid rods after 'theyhave been ground accurately to the desired diameter. n order that the rollers may be renewed or in order-that be substituted to provide other rollers may different shape or different size-passageway therebetween-for the rods; the hub of eaci roller has pins 126 and 127 extending-therethrough beyondathe sides thereof for enslots- 128 and '129 in the inner faces of hubs 114 and 155 respectively. To remove a roller its sup orting shaft is unscrewed at its inner en from the hub and the shaft is then'withdrawn whereupon the rollers can be slid from between the hubs. To re'insert aroller its pin ends are first slid into-the cross slots of the hub j and then the shaft-is inserted and screwed into place. readily-screwed. or unscrewed the outer ends thereof are polygonalas shown to receive a wrench for other tool.

The sprocket wheels 87 associated with the To enable the shafts to bechucks 65 and 66 are connected by chains 130 and 131 with sprocket wheels 132 and 133 on the shaft 134, a drive wheel 135 on this shaft being connected by a chain 136 with the sprocket wheel 137 on shaft 138, a ear'pinion 139 on this shaft being driven y the gear 140 shaft having the gear whr l 142 driven by the gear wheel 143 on shaft 144, this gear meshing with thegear 145on shaft 54 on which is the driving gear 55 connected with on shaft 141,;this' the motor pinion 56. The chucks are thus rapidly rotated around their axes to axially rotate the rods passing thercthrough, and

I at the same time the guide rollers are slowly rotated to longitudinally propel the rods through the chucks. To protect the rod guiding and propelling mechanism in the chuck a cover146 is provided therefor, the cover having the removable central plate 1 17 which has the centrally located thinible 148 for guiding the rods passing through the chuck.

During travel of the rods from chuck 65 to chuck (36 they are held in engagement with a grind-stone 149. This grind-stone is mounted on shaft 150 journaled in hearing boxes 151- and 152 at the front ends of a. U-shaped frame 153. This frame is slidable on guide-ways 154: and 155 extending at right angles with the chuck axes.

nectedby chain 167 with the sprocket wheel 168'on shaftlfif) .whichextends forwardly to the front of the machine and there terminates in hand wheel 170. By turning wheel 170 the frame 153 can be shifted transversely of the machine to adjust the grindstone with reference to rods passing between the chucks.

The grind-stone shaft 150 carries at its end a double gear 171 which meshes With the bevel gear 172 on the shaft 173 which is journaled in bearing frame 174 which will adapt it to swing about the grind-stone shaft axis (see Figs. 1 and 4). The shaft is also free .to shift longitudinally with reference to the gear 172. At its-lower end the shaft carries a bevel gear 17 5 which meshes with the gear '176 on the shaft 177 which shaft is suitably journaled on the machine frame. A bearing frame 178 which is pivoted concentric with shaft 177 has the bearing sleeve 179 for the shaft 173, and the gears 175 and 176 are maintained in mesh during swing of the i shaft 17 3 as the grind-stone structure is adj usted transversely on the machine. driving train for the shaft 177 is as follows: motor pinion 56, gear 55, shaft 5t, gear 180, gear 181, shaft 182-, gear 183, gear 184, shaft 185, gear 186, and gear 187.

As there is some distance between the- The chucks, provision is-made for preventing tlexurc of the rods and for holding them straight and against the grind-stone While they are being rotated by the chucks and propelled thereby. At the front of the machine a guide block 188 is provided on which the frame 189 is mounted to slide laterally parallel with the griudstone axis. Journa led in the end of the frame 189 and thread ed through a. block 190 secured to the machine frame is the screw shaft 191 which carries a bevel gear 192 meshing with the gear 193 on the shaft 1% which terminates at the front end of the machine in the hand wheel 195. \Vhen the hand wheel is turned the frame 189 is shifted laterally. The top 189 of the frame 139 overhangs the machine frame in frontof the grind-stone and shiftable on the frame top at right angles with the grind-stone axis is the carriage 196, the carriage base having dove-tailed connection with the frame top, as clearly shown in Fig. 10.- A screw shaft 197 is journaled in the front end of the frame 189 and threads into shown in Fig. 5, the guide t0ol, 203 is secured in' the head 201 and has the semi-cylindrical guide groove for engaging with the rod R to hold it against the grind-stone while it is being turned and propelled. The

tools are interchangeable and have dovetailed connection with the head,. as clearly shown. When rods or tubes of different diameters are treated corresponding tools are inserted in the head. By means of the hand wheel 19S adjustment can readily be made of the tool with reference to the grind-stone. Above the tool a water discharge noz z1e 204 is provided for directing water to thegrindstone. The grindings are carried with the water into a receptacle 205 formed below the grind-stone and the water with the grindings particles therein flows through openings 206 into a' trough 207 from which it runs through spout 208 into a receptacle 209 which is connected with the sewer by pipe 210. A strainer 211 is interposed between the spout 208 and receptacle 209 for retain ing the grindings particles in order to prevent wastage. Where the tubes and rods are of rubber the grindings particles, when thus collected, can be re-diss'olved and utilized.

As the grind-stone may wear unequally it must occasionally be trued up and to accomplish this a truing tool can be inserted in the head 201 in place of the guide tools and then by manipulating the hand wheels 195 and 198 the truing tool can be adjusted with Likewise, the plate 105' has the bol t' 217 ex- Q tending therefrom through the .lu 2155 ation.

Referring again to the chuck mechanism which rapidly rotates the rods axially during the grinding operation, the plates,105 and 105 whi'chlsupport the bearing frames .for the feed rollers will tend, to be moved radially outwardly by centrifugal force against the action of the springs 110 and 110., the faster the. chucks rotate the greater will be the tendency for such outward movement. This will, of course, var the pressure of the guide rollers on the rods and will interferenvith' proper support and feed of the rods. Provision is therefore made to counteract such centrifugal force and to keep the feed rollers centered and their pressure a ainst the rods equalized and uni form. Re f erring to Figs. 14 to 18, in each chuck the hub 82 pn thedisk 81 journals a collar 212 which has the reduced section 213 which abuts against the inner face of gear 85. Equalizer plates 214 and 214 have central openings forreceiving the outersections 213, these openings bein of the same width as the diameter of sai -se'ctions'-.,but being of slightly larger diameterijlongitud'f nally in order that they may} movef longitug \dinally on the collar. Extending outwardly from the back of the plate 105 is a lug'215,

this lug projecting through the enlarged opening 216 in the .disk 81 and extendingtherethrough is the bolt 2l7whi'ch clamps the lug between the bolt head and a collar 218. The outer end of the, bolt extends through an .opening 219xin the equalizeru V 1 and'nnifori'n diameter. I I

- In order totpreventstrainjon the various h plate 214, this opening bei of the same diameter as the bolt. The olt headlalso' extends through a longitudinallytelongated opening 220 in the plate 214', a nut 221 reqeivin'gthe threaded end of the bolt'to hold the plates together against the collar 218.

which passes through the openin .216 in the disk 81. the outer end of the olt 'passing through the elongated opening 220 m equal-n iizer plate 214 and through the opening 219' in equalizer. plate 2'14hthe opening being of c the same diameter as t e bolt, the nut 221' receiving the bolt end. The equalizer-plate 214,

which is securedat one end to the bolt 217 'extending from plate 205 has secured to its opposite end a weight 222, and the equalizer plate 214 which is secured by bolt 217 to plate 205' has secured at its opposite endthe bolt 222'. When the chuck is rotated these weights tend to move radially outwardly centrifugal force sufliciently to counteract any tendency of the bearing frame supporting pla't'es105 and 105' to move outwardly. -.Extending outwardly from the col lar 212 are the diametrically '0 posite pins 223 and 223', die pin 223 exten ing through thelongitudinally elongated and widened slot 224 in equalizer plate 214 and through the transversely elongated slot'225 in the equalizer plate 214-. The pin 223" extends through the transversely elongated slot 225 aljtl equalizer plate214 and through the longitudinally and transversely extended slot 224 in eq-lalizer plate 214. \Vith this arrangement any movement by centrifugal force in diametrically opposite directions will be equalized and in order to keep the passageway between the feed rollers 118 and 118 centralized and coincident with the axis of the chuck through which the rods R pass. In other words,.one of the weights cannot move radially outwardly a greater .distance than. the other, for any outward will cause equal outward'movement of such other plate and its weight. The arrangement is thereforefsiicli that any outward 'movement of the bearing frame supporting plates 105 anaiioafby centrifugal force wil be counteracted' byi the weighted equalizerplates, and the pressure of the feed rollers against the rods traveling'therethrough will be constant and 'uniformandthe -rodspassing between'the feedxrollers will .be held in axial alinemen't with the chuck' axes, there-1 sult being thatthe rods willjbe' ground off i and finished ,witha truecylindrical surface bearings for the shafts'll'l' and 117 and 96 -and'96' the holes in'coupling heads 119 and 120 and 119 and 120' are of larger diameter than the coupling pins received thereby. Inorder to liinit thedisplacemen't of the'feed justable abutment-screws'226 and 2265 are provided in lugs 227 and 227 extendin inwardly from the disk 81, the heads of t 'ese screws abutting respectively against the in; ner ends of the plates 105 and 105 when a. i j

rod leaves the feed rollers in .order to prevent the feed rollersfrom coming into con-- roller supporting bearing structures when ,there is no rod within the feed rollers, ad-- VVhen the rods are fed from the hopper i they'are more or less rough and of var mg I diameters and the grooves in the feed r0 lers of chuck 65 are therefore preferably tri-' ferent diameters.

' 18 are slidable transversely on the beams ,5 sections 23:37am} 234 1111 ltl "the shaft is? provided j 235; A stud 23ti cxtendsidou threading'233. Extendin v ,screw shaft is turned tlie'phit U "per structures thereon-;are;shifted toward 3 and 4 respectively in order that the width of passageway 19 may be varied. .Extending transversely of the beams and& and journaled in the vertical, limbs thereof is a screw shaft 230, this shaft being locked against longitudinal 1n1ovement'" by collars 231 and 232. Theshaft below the top f- 1- aism nit-he the beams 3 'and4 has leftjand theplate lii through th 'sloit 523 7 n and ;fat-

its lower endsfsu'pports bloc 238 which -threadedly, receives 'tl threads 23% of the.fscre w. shaft Ylien tl or away from each otherto adjust the width of. passageway '19 .to therdischargebelt 11. 1 Ti) maintain meshing engagement, between the gear 4lpa nd ;the,gear l0 on the shaft supporting feed roller :37. the-gearAl-is splined on the shaft/l2 \to be shifted longi tudinally thereon when the hopper halves are separated or brollghttogether. Provision is also made for permitting longitudi-- mil-shift along the gear-'35 of the gear 34 which controls the-operation of theescape ment mechanism: mounted on. one" of the hopper sides. Thegear 34; is mounted on a-stnb shaft :2-l1 which extei1ds;from the hopper structure, side. As the hopper sides are adjusted the gear 34 will then shift along the gear 35 which will remain in mesh therewith. VVh'en the hopper is adjustedfora rod ortube of different diameter, the'escape ment blade supporting collars 23 and 241aiid the spacing collar 27 are changed, depend ing upon the size of the rod'whose flow and escape is'to be controlled. V

The ends of the hopper are preferably closed, end plates 242 and-243 being shown, these plates being rigidly secured along one edge to one'of the hopper sides and the other edges of the plates having pin and slot connectionf2-ll and such connection permitting adjustment of the hopper side W g the block 240 whichitli readedlyff rece yes the a p f said chuck -at opposite si es of its center, the hop-T ing rods or tubes, the combination of a hop per, means for feeding rods or tubes from the hopper one at a time, chucks for receivng the rods or'tubes from the hopper, feed mechanism within said chucks adapted to yieldingly clamp said rods to shift them axially therethrough, means for rapidly rotating said chucks and said feed mechanism with the rods passin therethrough, means within each'of said'c ucks for neutralizing thece11trifuga11 -force tending to overcome the; clamping engagement of said feed mech- 'd rodswhereby said clamping aintained imiform, and a ngaging with said rods eir... passage through said hine, rinding cylindrical hollow.;;shaft journaled 1n sai bearhuckgscuted t0 the shaft end axially guideways on thzreof, vl radially e'xtendin shaft and said=passageway, yielding means tending to force ,said plates radially inwardly whereby said .rollers will exert ds combinationo 'a supportin bearclampingaction on rods passing therebe- L tween, means for'rotating' said'rollers to propel rods axially through" the chuck, means for rotating said shaft and-chuck, and

grinding mechan sm operating on said rods.

duringpropulsion and rotation thereof.

grinding rods, the.

, bearing frames 3." In a machine for combination" of a ohuc mounted on the'chuck at opposite sides of Jits-center and shiftable radially, feed rollers'journaledin said bearing frames in a diametral plane and having peripheral grooves for forming an ax1al passageway for rods to be ground, yielding means tending to force said bearing frames toward each otherto etfect'clamping engagement of the rodsby said rollers, means for rotatfog said rollers to propel rods longitudinally. means for rotatingsaid chuck to axiali rotatei'ne rods (luring propulsion thereof, means Within said chuck for counteracting centrifugal force acting on said bearing frames, and grinding mech anism for engaging with said rods during propulsion and rotation thereof. ,i

4. In a grinding machine for rods, the combination of two, chucks, diametrally opposed hearing frames in each chuck, a

feed roller journaled in each bearing frame,

said rollers being in a common dlametral planc'amlhaving peripheral grooves formihg said chucks in synchronism whereby said rods are axially rotated during propulsion thereof, means in each chuck for neutralizing the centrifugal force tending to' shift said bearing-frames apart whereby the :clamping engagement of the; feed rollers sidesiof said chuck and shiftab feed rollers on said frameshaving 'periph-- gal lfmce tcndingfto shift the bearing frames. outwardly whcrebyj the pressure of said chuck, centrifugal means wit imsai chuck acting on said bearing, frames dur-. ing' rotationof the chuck to counteract the centrifugal force tending to shift such the'rodsg will be maintamed'uniform, a grind-stone engagmg the rods durmgfiherr passage from one chuck to the other, and means for-- rotating said grind-stone in a direction-op posite to that of the rotation of thefrods; 5. In a machine for finishing'rods, the combination of a chuck, meansfor feeding rods onezit a time axially into said chuck;'

bearing frames at diametricallyopgosite e ra c'ral grooves cooperating to form an axial passageway between them. to, receive the-,- rods, springs acting on said heating vframes. to force them' radially inwardly to cause t 1c rollers to exert clampin action on ithe rods, means for rotating sai rollers to r I i longitudinal movement of. the other plates tendin propel the rods, means for axially. rotatin frames outwardly, a grind-stone adjacent the chuck outlet for operating'on said rods, and an adjustable abutment for holding said rods in alinement and against said grindstone.

6. In a machine for finishin rods, .the combination of a chuck, means i0 rods one at a time axially'into said chuck,

bearing frames at diametrically. opposite sides of saidchuck'and 'shiftable radially,

feed rollers on said frames having periph eral grooves cooperating to form an axial passageway between them to receive the rods, springs acting on said bearing frames I tending to force them radially inwardly to cause the rollers'to cxertclampin'g action on the rods, means for'rotating sai rollers to propel the rods, means for axially rotating said chuck, plates 'cxtending diametrally in said chuck, -each plate being seially,

r.feeding I rods or, tribes, means for e ect ng relatlve end, said plate being adapted to shift longitudinally, means for causing said plates torotate with the chuck, said plates and weight :csponding to centrifugal force to ,counter-' act the centrifugal force tending-to shiftthe bearin fran'ies outwardly whereby the pressure fol the feed rollers against the chucks will be maintained uniform, and a grindstone ad acent the chuck outlet for operati 1g on said rods as they pass from the chuck. 7. In a machine for finishing rods, the

combination of a chuck, means for, feeding rodsone at a time axially into said chuck, hearing frames at diametrically .opposite sides of said chuck and shiftable radially, feed rollers on said frames having peripheral grooves coiiperating'to form aii axial passageway between them to receive the rods. springs acting on said bearing framestending toforcc them radially inwardly to cause the rollers to cxertclamping action on-jtho rods, means for rotating said rollers to pro p -lf the Li-oils. means for a xially more iiigfsaidjclu1ck,',pl ates extendingdiametrally In centrifugal, force" tocounteract the centrifuthe-fced rollers; against the chucks will be -maintained uniforili, means interconnecting said plates for-translating the longitudinal increment 'of one plate into-corresponding whereby the passageway between said feed "rollersswill' be maintained central with reference to the clm'cl 'r-axis,-and.a grind-stone adjacent the chuck.outlet for-operating on 8. In 'a machine of the class described, the

aid;lchuckseach plate beiiig sccured'at onelendlofone'fof said bearing frames and .havi|1g a-,\\'eigl1t at its other end, said plate being adapted to shift longitudinally,-means ',.fo1"= causing saidplatesto' rotate with the a; chuck, said plates .and weight..responding to combination with two parallel supporting beams having a passageway therebctween, a

apart to. leave a discharge assageway for shift of'said'hopper side sections on said hopper structure comprising side sections mounted on the-respective beamsand spaced.

beams to vary the width of said, discharge passageway, and abelt traveling below t discharge passageway outlet to receive the p the class described, the combination ot'supportingfra'me sections having a belt' run-way therebetween, a

rods orftubcs.

9, ln'a machine of hopper structurecomp'rising' -hopperside sections mounted on the respective frame to leave a discharge passageway for rods or I sections and separated at their lower ends tubes, means .for shifting said hopper side sections to adjust the width of said discharge passageway, a belt traveling in said run-way below the discharge passageway to migage with the rods or tubes to shift them way one. at a time, feed rollers for receiving.

'0 leave a discharge passageway for rods or tubes, means for shifting said hopper side sections to adjust the width of said discharge passageway, a belt traveling in said run-waybelow the end of the discharge pasrods or tubes through the discharge passage one end of the rods and .for propelling said.

dischar e passageway and away therefrom,

" other end of said rods to assist in shifting said rods from the discharge passageway.

I capement mechanism for controlling t e 11. In a machine of the classdescribed, thecombiuation of a hopper structure comprising two hopper-side sections separated )y a discharge passageway, .means for a djusting said side sections to vary the width of said discharge passageway, :escapement mechanism for feeding rods or tubes one at a. time to the bottom of said discharge pas-' sageway, feed rollers journaled on said side sections and projecting into said discharge:

passageway to receive the rods or tubes, and means for rotatln lengthwise propulsion of said rods out of the discharge passageway.

. 12. In a machine of the class described,

thc coinbination of a hopper having spaced sides forming a discharge passagewa escape of rods or tubes one by one to the bottom of said passageway, a belt traveling below said passageway, feed rollers at the bottom of said passageway near one-side thereof for receiving one end of the rods, said belt receiving the other ends of said rods and eotiperating'with said feed rollers to shift the rods longitudinally out of the passageway, rotary supporting mechanism for receiving the rods, and grinding mecha nism for acting on said rods when in said rotary suppm'ting mechanism.

13. In a machine. of the class described, the con'ibin ion of a hopper strueti-ire bar ,in g a vertical discharge passageway through which horizontally disposed rods or tubes max pass, escapement mechanism f r controh lingthe one at a time passage of rods or asections and separated at their lower ends 15".

sageway, escapement mechanism. for ceding rods longitudi ll along the bottom of the:

Said he Ceiling and ging with-Ithe'fl said chucks f olg reeeiving the. rods one at a .time' .ia'ndzp opellingggthem axially there- "erate on the'j'rods as to the othe'r.'-

tubes toward the bottom of said passageway, feed rollers at the bottom of said passageway at one side thereof and projecting theremeans for axially rotating said chuckmech-l anism to'rotate the rods axially, meansin the chuck mechanism for axially propelling the rods therethrough, and grinding mechanism acting on said rods during such rotation propu sion by the chuck mechanism.

14. In a machine of the class described,

the combination of a hopper structure comprising two side walls having a narrow discharge pasageway therebetween for rods or tubes, means-for adjusting said sides to change the width: of said passageway, .es-

capemeht mechani sm mounted on one of said sides} .to.- controlj the cheata time travel of rodsrto, of said passageway, 'Lmeans iuthebo win ofsaid passageway for shifting 'i.t helj l "ods d axially therefrom, two

chucks arranged axial aline nent with the discharged r- 'rods; pi'opulsion mechanism in through,.means'gfork 'fitating said chucks to rotate the rodslduring their passage there through, and a grind-stone positionedto op-' ey p'ass from onechuck 15. In'aniachin of class described,

"the. combination of a hopper for receiving rods ortubesin' horizontal position, a.dis

charge pasageway leading downwardly from saidhopper, g.-1 1 pluralit of upright shafts adjacent one side of sai passageway having escapement arms thereon for projecting into said passageway to. control the one ata time rods ortubes to the bottom of said passagewafyfwhen said shafts are. ro tated, means i or simultaneously rotating said shafts, means at the bottom of said passageway for propelling the rods. axially through one side of the passageway, a chuck positioned axially to receive the discharged rods, means in said chuck propelling the rods axiall therethrough, means for rotating said 0 uck to rotate therods during propulsion therethrough, and a ind-stone for operating on the rods as t ey pass from the chuck. 7

16. In a machine for 'nding rods or tubes, the combination 0 hopper mechanism for feeding rods lengthwise one at a time, a chuck, a plurality of feedwheels in said chuck having opposed peripheral faces formin a passageway for receiving the rods,

passage 0 means or rotating said wheels to propelthe' anism for operating (on the rods as they. pass trifugal force to cause the feed rollers to exljfrom said chuck. ert uniform pressure against the rods, means 17. In a machine of the class described, for rotating the feed rollers to propel the the combination of feeding means for feedrods axially, means for maintaining said 15 '5 ing rods or tubes lengthwise one at a time, rollers in position to hold said rod in axial -a-chuck5 radially'shiftable bearing frames in position during, propulsion and rotation "said", chuck, feed rollers journaled in said thereof, and grinding mechanism for acting bearing frameswvith their peripheral faces on the rods as they come from the chuck, opposed to form anaxial passageway for In witness whereof, Ihave hereunto sub- 20 10 the rods, means for rotating said chuck, scribed my name this 28th daof June, 1916. means within the chuck controlled by 'cen- HENRY AGNEW.

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