US2400163A - Sole channel and rib cementer - Google Patents

Description

y H. c. PAU'LSEN SOLE CHANNEL AND RIB CEMENTER Filed Oct. 21, 1944 5 Sheets-Sheet l U e n w U A m U 3 Sheets-Sheet 2 7 May 14,1946 H. c. PAULSEN SO LE CHANNEL AND BIB 'GEMENTER Filed Oct. 21, 1944 y H. c. PAULSEN 2,400,163

SOLE CHANNEL AND RIB GEMENTER Filed Oct. 21, 1944 3 Sheets-Sheet 3 w 6 v me '26 2 w 98 [m1 enfor Hans 6'. Faulsen Patented May 14, 1946 SOLE CHANNEL AND RIB CEMENTER Hans C. Paulsen, Medford, Mass, assignor to United Shoe Machinery Corporation, Fleming ton, N. J., a corporation of New Jersey Application October 21, 1944, Serial No. 559,814

21 Claims.

This invention relates to machines for applying coating material to adjacent, angularly related surfaces and is herein illustrated as embodied in a machine for coating the inner side of the rib and the adjacent channel of an insole.

When it is desired to reinforce an insole by attaching with cement narrow strips of canvas as distinguished from an over-all covering, it becomes necessary to apply the cement in a stripe covering notonly the inner surface of the rib and the adjacent channeled portion but also extending along a narrow margin of the midportion of the insole. To do this effectively at a speed which gives a satisfactory production presents serious problems partly because of the desire to use a fluid type of cement, such as latex, and partly because of the peculiar relation of the surfaces to be coated, especially around the toe of the insole. Another problem, under present conditions, is introduced by the fact that substitute materials for the latex commonly employed contain particles of coagulated material which tend to interrupt the continuous flow of cement and to render necessary frequent cleaning of the parts of the machine, The relation of the surfaces to be coated requires the parts of the coating devices to be designed so that they will fit into the corner between the rib and the channel and so that they will not interfere with the continuous feed of the insole. It will be realized that, in order to feed the insoles substantially automatically, it is necessary to provide a support for the fiat surface of the sole and to engage both sides of the rib as well as the feather of the insole to feed it.

With this in mind, an object of the invention is to provide an improved coating machine by means of which an accurately and evenly distributed coating may be applied to these angularly related surfaces as successive portions of the margin of the insole are presented to the coating devices substantially automatically.

To this end, the illustrated embodiment of the invention includes an applying roll the periphery of which coats the inside channel and the adjacent portion of the midsurface of the insole while the end of the roll coats the inner side of the rib. Coacting with this are a support roll and a feed roll, this latter being disposed in end-to-end relation with the applying roll.

Features of the invention will be found to reside in mechanism for controlling the flow of coating material to the periphery and the end of the applying roll, in the end-to-end relation of the rolls which grip the rib of the insole, in guides which cooperate with the sides of the rib to guide it into the space between these rolls, and in the arrangement of the parts of the machine which support this applying roll so that it may be moved in laterally and heightwise into contact with the work While maintaining a driving connection with the feed roll which engages the feather of the insole.

These and other features of the invention will best be understood from consideration of the following specification taken in connection with the accompanying drawings, in which:

Fig. 1 is a side elevation of the machine with parts in section;

Fig. 2 is a plan view;

Fig. 3 is a vertical sectionon the line III-III of Fig. 2 through the head of the machine but on an enlarged scale;

' Fig. 4 is a transverse section through the control valve on the line IV-IV of Fig. 2;

Fig. 5 is a rear elevation of the machine showing a treadle-controlled mechanism which draws the head into place and starts the machine;

Fig. 6 is a horizontal section through the axes of the applying roll and the feed roll when in engagement with the rib of an insole; and

Fig. 7 is a detail view on an enlarged scale of the end of the applying roll which coats the rib.

The machine is particularly adapted for the treatment of insoles 10 having upstanding ribs l2 which may be formed by channeling the sole and then sticking together the upturned channel flaps. During the use of the machine, the tread surface of the sole rides on a supporting roll l4 which, together with a coacting feed roll it, grips the feather of the insole and feeds it forward away from the observer. The application of coating material is effected by a grooved applying roll I8 the inner end of which is enlarged to insure contact with the bottom of the inner channel of the sole. Also, the end surface 22 of this roll has substantially radial grooves 23 (Fig?) communieating with the longitudinal grooves 25 in the periphery, By means of this end surface 22, the cement is applied to the whole height of the inner surface of the rib l2.

A machine for supporting these work-engaging parts comprises a frame 24 (Fig. 1) on which there is pivoted,- on a screw stud 26, a carrier comprising an arm 28. To the end of this arm there is attached by screws (Figs. 2 and 3) an upstanding carrier plate 32 having ways 3% adjustably supporting a base portion 38 of an outwardly extending plate-like arm 38. The arm 38 forms a support for a laterally slidable head 48. A gib (not shown), having a beveled edge and attached to the plate 32 by screws, serves to complete the ways. The head 48 has an end cover 39,

The carrier, consisting of the arm 28, the plate 32 and the arm 38, on which the head is mounted, is normally urged downwardly by a spring 42 interpositioned between the arm 28 and a stop plug 44 threaded in an upstanding yoke 48 on the frame. On the carrier arm 28 is bolted a depending lug 48 and, when the machine is idle, the carrier head 48 and the work-contacting rolls I and I8 are lifted against the tension of the spring 42 by means of a cam 58 secured to a shaft 52 on which there is mounted an arm 54 provided with a treadle rod 56. The treadle (not shown) is raised by a spring 51 (Fig. 5) stronger than the spring 42 but, when the treadle is depressed, the cam 58 allows the arm 28 to carry theserolls I6 and I8 against the work.

The feed roll I5, grooved according to the nature of the work, has a shank 55 which is threaded into the end of a shaft 58.. This shaft is journaled in the carrier arm 28 and is held against endwise movement therein by a collar 59, it being connected by gears 68 and 62 with a drive shaft 84 having a driving pulley 56. and journaled in the frame 24. A driving connection between the shaft 64 and the gear 82 comprises a toothed clutch 68 arranged to be separated, when the machine is idle, by the, treadle spring 51, acting to. move a yoke I8 to draw the gear away from the driving portion of the clutch. This yoke is pivoted on the frame at 72., and. its upper end is connected, to a rod I4 passing through and yieldably joined to an operating arm I6 which is clamped to the treadle-operated shaft 52. The yieldable connection comprisesv a. spring I8 surrounding the rod and collars 88 and 82. When the treadle is: depressed, the clutch will be closed by the arm I6 and its connected yoke I8, to, set the machine, in operation. When the treadle is released, its spring 5'! (Fig. 5') will lift the rod 55, thus turning the arm 16' to swing the yoke 78 and open the clutch 88.

The above-described treadle-controlled mechanism is also provided with an arm 84 on the shaft 52 which is joined by a link to a bell crank 86 pivoted on the frame by a stud 88 and having an upstanding arm 98 the upper end of which is yieldably joined to the sliding head 48 to move the applying roll I8 endwise against the rib of the work when the treadle, rod 56 is depressed. To this end, the head 48 has a back plate 82 (Fig. 4) provided with a rearwardly extending stud 94 over which there is detachably applied the hook-end 96 of a rod 58. The hook-end 98 has a spring-pressed button I88 (Figs. 2 and; 5) engaging the under side of the stud 94 to hold the rod in engagement with the stud 94 until itis desired to remove the head from the machine, as for cleaning. The reduced upper end of the arm 98 isapertured to receive the rod 98 on which there, is a collar I82 (Fig. 5) held by a set screw and provided with a wedge-shaped arm-engaging face. On the other side of the arm. is a spring I04 abutting a collar I88 threaded to the outside of a sleeve I88. A lock collar I89 to hold the collar I86 in adjusted position is also threaded on the sleeve. The latter has, a reduced hexagonal end portion I I8 internally threaded to the end of the rod to permit adjustment ofthe, sleeve on the. rod and its retention in adjusted position.

by a cooperating lock nut III. With the treadle depressed, as in normal operation, the arm 98 is swung counterclockwise in Fig. 5 around its pivot 88 and, compressing the spring I84 slightly, draws the head in toward the plate 32 to make the roll l8 yieldably grip the insole rib I2 against the end of the feed roll l8. On the other hand, if movement of the head 48 is impeded because of leather dust 01 other foreign matter gathered on the arm 38, the operator, by further downward movement of the treadle, can apply a positive pressure to the rod 98 by bringing the arm 98 against the end of the sleeve I88 and will usually clear away the obstruction in so doing.

. Upon completion of a piece of work, the treadle is released whereupon the spring 51 lifts the treadle rod', swinging the arm 88 clockwise as seen in Fig. 5 to slide the head and separate the rolls.

Inward movement of the head under the impulse of. the spring I84 is, limited by a stop. bolt M2 the inner end of, which engages a surface on the carrier plate 32. beside the guideway 34. This bolt H2 is, threaded in a; block, H4 attached by screws to the rear plate 92 of the head and it is held, in adjusted position, by lock nuts II6 (Fig- 2.) at its. inner end and a spring Ill beneath the head of. the bolt. When setting upthe machine, or compensating for wear of the roll i8, the,- hcightwise. position of the plate-like, arm 38 on which the head sli es is. determined y a, screw I I8, groovedto fit. a'slot man, angle piece I29, (Fig. 1). secured to the top of the carrier plate 3.2 and threaded in. the. base. portion 36- of said arm.

Attached to the, front face of the head 48 is a. block [22,. (Figs, 3 and 4) in the lower end of which is formed a curved casing for the applying roll, I8. This roll is rotatably mounted upon a stud, I24; secured in that, block and, is held thereon by a head I26 on the stud. Inasmuch as this applying roll I8, carries cement. p n. its pe iphe y, her is always the danger that some cement will work into the bearing provided by the stud I24 and, cause the roll to. freeze theren To oid this possibility and to carry away th coagulated particles which may enter the bearing, the stud I24 has on its bearing surface a helical groove I528, (Fig. 6.) terminatin at. the outer end of the stud in a passage I28 extending through the head ['26. and into the screwdriver slot thereof. The direction of the helical groove is such that rotation of the applying roll 28 counterclockwise, as viewed in Fig. '7, with the work, tends to push the coagulated particles along the groove and out through the passage I29.

The block 122 is, also recessed to provide for the reception of a valve casing I38 (Figs. and 41) having a packingcompressed by a threaded gland I'3 2 in which is guided a needle valvestem I34. The pointed lower end' of this valve stem coacts with a conical seat I38 which is itself formed inthe lower end of a valve body I38.

This valve body I38 has a passage for the valvestem above the sea-t which is larger than that stem and the fluid coating material is delivered: to that passage through a neck I4'8- (Fig; 4) receiving a headed hollow plug I42 the outer surfaceof which has a circumferential groove connected toitsi inner passage b-y' apertures I44. Surrqundingthis plugand held there. by its head is a sleeve M6: formed at the end; of a. tube I48 to which the; coating material is. suppliedunder low pressure, (or the. order of four pounds) through any suitable hose (not shown). .Just below the valve seat I36 (Fig. 3) is an aperture in the block I22 leading into thecasing surrounding the applying roll I8, and the front portion I50 of this casing is removable, thusfa cilitating the cleaning of theapplying roll. 1

The cement under pressure will, therefore, when the valve stem I34 is lifted, be pushed into the casing surrounding the upper side of the applying roll I8 and will spread out axially of the roll along the grooves 25 (Figs, 6 and '1) in its periphery. These grooves are continued through the enlarged portion 20 of the roll and terminate in the depressions I I between the teeth I53 formed in this enlarged portion. From these depressions the cement will pass into the grooves 23 in the end of the roll and thence to the end surface 22 of the roll by means of which it will be applied to the rib of the insole. The upper end of the valve-stem I34 has a head I52 (Fig. 4) provided with a reduced portion received in an abutment I54 threaded in the block I22 and containing a spring I56 which normally urges the valve into closed position. The valve is raised automatically by a bell crank I (Fig. 1), when the head is moved laterally by the treadle to bring the applying roll into operative relation to the work. This movement of the bell crank is effected by the resistance of a yieldable strut I58 supported in an aperture in' the angle piece 520 and surrounded by a spring I60 abutting a collar I62 which is fastened to the rod. A limiting collar I64 is provided at the other side of the angle piece. 7 The outer end of this strut is forked at I66 to engage a headed stud I68 in the upper arm of the bell crank I10 the lower arm of which is forked at I12 (Fig.8) to surround the valve stem and to underlie the head I52 thereon. The bell crank is pivoted on a fiat upper portion I3I' of the valve casing I30 and this upper portion is hooked over a shank of a retaining screw I14 (Fig. 3) which, when tightened, holds the casing in the block I22 and which, when released, permits the casing with its valve, bell crank and hose connection to be readily lifted away from that block for the sake of cleaning the valve or any of its parts.

In order that the applying roll 20 may be driven in synchronism with the feed roll I6, or at a slightly higher speed, a gear connection between the applying roll and the feed roll shaft 58 is provided. This is mounted in a block I80 attached to the head 40 and containing a bearing for a countershait I82 having at its left end, as viewed in Fig. 3, a pinion I84 meshing with the teeth I53 (Fig. '7) cut on the enlarged portion 20 of the applying roll I8. The other end of the countershaft I82 is fluted to slide in a complemental recess in a pinion I86 which has a grooved stub shaft I88 jotu'naled in a recess in the large lower end of a block I90 held by screws to the plate-like arm 38 close to where the latter joins its base 36. The block supports the pinion and guards most of its periphery. The front of this block is slotted, as indicated in Fig. 2, to admit a portion of an angle piece I92 which also enters the groove of the stub shaft and holds the latter in the block I90. This angle piece is held on the large lower end of the block I90 by a screw. The pinion I86 meshes with teeth I94 formed on the'end of the feed roll shaft 58 and elongated for convenience of manufacture and to facilitate cleaning. The fluted connection above described provides a continuous drive while the head 40 is being moved laterally by the rod 98 as the carrier is raised by its spring 42 and, conversely, it allows the applying roll to be brought into gripping relation to the side of the insole rib to hold the latter against the abutment provided by the end of the feed roll I6. The under side of the block I is provided with a depending flange I (Figs. 3 and '7) which covers the upper portion of the end of the applying roll and prevents cement from working out at that portion to an extent such that it would run down and coat the upper edge of the rib I2. The feed roll I6 with its threaded shank 55 (Fig. 6) is made detachable in order to permit the use of substitute feed rolls having different teeth upon theirperiphery, as may be required by the character of the Work. It will be noted, also, that the end of the feed roll is conical in order the better to hold the upwardly tapering ribs of the insoles against the end surface 22 of the applying roll I8 (Figs. 1 and 5). On the surface of the countershaft I82 is a double helical groove I95 (Fig. 3) to distribute, along both halves of the bearing, oil received through a passage I96 and a tube I91 from an oil cup I98 (Fig. 1) supported on a bracket I99 (Fig. 5). Just enough oil pressure is set up by this groove to offset any tendency of the cement to work into the space between the inner end face of pinion I84 and the block I80.

A bearing for the outer end of the supporting roll shaft 64 is provided by a portion of a bracket arm 200 (Fig. 1) attached by screws 202 to a portion of the frame 24. On this arm, there is secured a table 204 (Fig. 4) on which the work is supported as it approaches the roll I4. The bracket arm 200 also serves as a support for a scraper 206 arranged to keep the periphery of the roll I4 clean. This scraper is carried on. an arm 208 which is pivoted in ears 2I0 formed on the bracket arm 200, and the scraper is yieldably held against the periphery of the roll by means of a torsion spring 2I2 (Fig l).

The rib I2 of the insole is guided into the space between the feed roll I6 and the applying roll I8 by a curved end surface 2I3 (Fig. 6) on the detachable casing-portion I50 for that applying roll and also by a guide 2I4 which is adjustably connected by a tongue and groove to a bracket 2I5 supported on the upright plate 32. The guide 2 I 4 has a curved end 2 I 6 against which the other side of the rib rests. It will be noted from Fig. 1 that this guide 2I4 has a bottom surface which bears upon the feather of the insole. If the feeding movement is at all fast, there is a tendency for the sole to whip as it is turned around the toe end and to move with suiiicient violence so that there is a possibility of the rib being dragged out of its normal path. To prevent this, an upstanding gage finger 2I8 is formed on the end of an arm 220 which is secured to the bracket arm 200 by a bolt 222 (Fig. 1). This bolt passes through a slot in the bracket arm 200 to permit lateral adjustment of the gage finger and also, if the machine is to be used for Cookie insoles, to permit the bolt to be loosened and the gage finger dropped below the surface of the table 204.

In the operation of the machine, the operator will present an insole held horizontally with its toe pointing rearwardly so that the end of the r'iBis positioned by the guide 2! and the curved surface 2I3 (Fig. 6) as he causes the two upper rolls -I6 and I8 to be brought down into contact with the sides of the rib. He will accomplish this by depressing a treadle connected to. the rod 56 (Fig. l) which will turn the cam 50 to allow the carrier arm 28 to. be depressed by the spring 42. This treadle movement will also connect. the parts of the clutch 68 to drive the feed roll shaft and the shaft for the supporting roll.

As the carrier arm is depressed, the upstanding arm 90 (Fig. 5) will draw the head 4E1 inwardly to cause the end of the applying roll to grip the rib against the end of the feed roll. While. this is happening, the control valve I34 (Fig. .3). is opened to supply coating material to the applying roll as the insole starts forwardly away from the operator. The enlarged portion 20 of the periphery of the applying roll 18 applies a coating to the inner channel while the. body of the roll I8 coats the adjacent margin of the midportion of the insole. At the same. time, the pressureof the cement within the casing around the applying roll will force it through the axially extending grooves into the grooves in the end of, the applying roll by which it is transferred to, the inside of the insole rib. Inasmuch as the upper portion of the end of the applying roll is covered by the transversely extending portion l85- (Figs. 3 and 7) of the casing, there is no tendency for the cement to be carried: over the top of the rib, but it is thoroughly wiped into the lateral surface thereof. As soon as the end of the rib is reached, the operator will release. the treadle, thus immediately closing the valve 134 and separating the applying roll from the feed; roll so that the work may readily be removed from the machine.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for coating angularly related surfaces upon shoe parts, a work support, rolls. coacting therewith disposed in end-to-end relation, said rolls being arranged for peripheral engagement with spaced points upon a shoe part carried by said support, means for urging the end of one of said rollsi against one of. said angularly related surfaces, and means. for supplying coat. ing material to the: latter roll.

2. In a, machine for coating solesv having. an. upstanding rib, means for supporting a sole, rolls coacting therewith. disposed in end-to-end relation for peripheral engagement with the sole upon opposite sides of the rib, means for urging, one of said rolls toward the. other to engage thev rib, and means for supplying coating material to one of the rolls.

3. In a machine for coating so-leshavingan upstanding rib, a support, rolls coacting therewith disposed in end-to-end relation for peripheral engagement with said sole upon opposite sides of the rib, yieldable means for moving one of said rolls axially toward the other roll to: grip the rib, one of said. rolls having grooves extending along its periphery and continued. across that end surface thereof which is adjacent to the other roll, a casing surrounding, a portion of the periphery of said roll, and means for supplying coating material under pressure to the interior of said casing, whereby the cement is forced through the grooves onto the end surface of the roll.

4. In a coating machine, an applying roll supported with its periphery and an end surface disposed for the presentation of work having angularly related surfaces, the end surface of the roll having grooves, a casing partially surrounding the periphery of the roll and extending over a portion of the end surface. thereof, and means for supplying coating material to the interior of said casing, said roll having passages connecti-ng said; end grooves to the interior of the casing.

5. In a machine for coating soles having an upstanding rib, a support, a, feed roll for engagement with the feather of the sole outside of the rib, an applying roll for engagement with the sole inside the rib, means for supplying coating material to the periphery of the applying roll, and means for moving one of said rolls inwardly toward the end of the other roll and downwardly toward the support.

6. In a machine for'coating soles having an upstanding rib, a support, a carrier movable heightwise with respect to said support, a head slidably mounted on. said carrier for movement laterally of the support, rolls for coaction with a sole inside and outside of the rib, one of said rollsv being mounted on the carrier and the other on the head thereby to grip the rib between their end surfaces, driving means for interconnecting said rolls for rotation together, and means for supplying coating material to one of said rolls.

7'. In a machine for coating soles having an upstanding rib, a support, a. carrier movable heightwise with respect to said support, a head slidably mounted on. said carrier for movement laterally of the support, rolls for coaction with a sole inside and outside of the rib, one of said rolls being mounted on the carrier and the other on the head thereby to grip the rib between their end surfaces, driving means interconnecting said rolls, for rotation together, means for supplying coating material to one of said rolls, and means for controlling the supply of coating material rendered operative by movement of the head toward the work.

8. In a machine for coating soles having an upstanding rib, a support, a driven feed roll for engagement with the feather of a sole and having a toothed shaft, a carrier for said feed roll, a pinion meshing with the feed roll shaft, a head shdably mounted on said carrier and provided with an applying roll for engagement with the sole inside the rib, driving means for the applying roll slidablyengaging said pinion, and operator-controlled means for moving said rolls toward the work and bringing them endwise intov engagement with the opposite sides of thev rib.

9... In a machine. for coating soles having an upstanding rib, a supporting roll, a carrier movable heightwise with respect to said supporting roll and having a head movably supported thereon, a feed roll and an applying roll on the carrier and the head respectively, said rolls being positioned onparallel axes, means for supplying coating material to the applying roll, and operator-controlled means for moving said rolls heightwise toward the supporting roll and one of them endwi'se toward. the other to grip the rib of the sole.

10.. In a sole-cementing machine, a carrier movable heightwise, of the sole, a head slidably and removably mounted on said carrier and provided with an applying. roll, readily disengageable means for drawing the head along the car rier, and operator-controlled means for moving said disengagea ble. means to draw the applying roll into position transversely of the sole.

1-1. In a sole-cementing machine, a carrier movable heig-htwise of the work, a head mounted for lateral movement on the carrier, an applying member on the head, movable means for controlling the supply of coating material to said member, and a connection between said controlling means and the carrier to operate the controlling means upon lateral movement of the head with respect to the carrier. 1

12. In a solecementing machine, a support, a carrier movable heightwise of the support, a head mounted on said carrier for movement laterally of the support and provided with an applying member, an adjustable stop for limiting movement of the head with respect to the carrier, an abutment on the carrier for engagement with a portion of the work, and operator-controlled means for yieldably moving the head on the carrier toward said abutment to an extent determined by said adjustable stop.

13. In a sole-cementing machine, a support, a carrier movable heightwise with respect to the support, a head movable on said carrier and removable therefrom, said head being provided with an applying member, means for controlling the delivery of coating material to said applying member, readily disengageable means for operating said control means upon movement of the head with respect to the carrier, and readily disengageable means for moving the head on the carrier.

14. In a sole-cementing machine, a support, a carrier movable heightwise of the support, a head mounted on the carrier for lateral movement thereon, an applying member on the head, operator-controlled means for moving the carrier toward the Work and for moving the head laterally of the carrier to position it on the work, a hollow casing removably supported on said head and having a needle valve, a crank to lift said valve, means for supplying coating material to said casing for delivery to the applying member when the needle valve is moved, and a yieldable strut between the carrier and the crank, said strut being readily disengaged from the crank when the casing is removed for cleaning.

15. In a coating-applying machine, a shaft, an applying roll rotatably mounted on said shaft, means for supplying coating material to the periphery of the applying roll, and means for removing coating material entering the bearing between the roll and the shaft, said means comprising a groove spiralled around the shaft and a passage extending to an open end of the shaft and communicating with said groove.

16. In a cementing machine, a support, a screw stud having a head, an applying roll rotatable on said stud and held in position by the head,

means for supplying coating material to the periphery of the roll, said stud having a groove spiralled around the shank of the stud, and a connected passage extending through the screw head to permit particles of foreign matter to be moved out of said passage to prevent undue friction between the roll and the stud.

17. In a machine for coating soles having an upstanding rib, a support, coating means, a carrier movable heightwise with respect to the support, a guide, for engagement with the outside of the rib of the sole, mounted for hei-ghtwise adjustment on the carrier, and a guide on the support for limiting the lateral swing of the sole.

18. In a machine for coating soles having an upstanding rib, a support, a carrier movable heightwise of the support and provided with a feed roll for engagement with the feather of a sole, a guide adjacent to the end of the feed roll, and coating means mounted for lateral movement on the carrier to press the rib against the guide and the end of the feed roll.

19. In a machine for coating soles having an upstanding rib, a support, rolls eoacting therewith and disposed in end-to-end relation upon opposite sides of the rib, one of said rolls being displaceable to facilitate the introduction of the rib, meansfor supplying coating material to one of said rolls, curved guides the forward ends of which with respect to the direction of movement of the work terminate adjacent to the end surfaces of said rolls, and means for producing relative movement between said rolls to grip the rib.

20. In a machine for coating soles having an upstanding rib, a support, rolls rotatable about parallel axes and mounted in end-to-end relation, means for yieldably pressing one roll to bring the ends of said rolls into engagement with the rib of a sole carried on the support, and guide members mounted in fixed relation to said rolls to facilitate the movement of the rib into the

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