US1656346A - Coating machine - Google Patents

Description

"Jan. 17, 1928.

J. w. COSGROVE COATING MACHINE I Filed Oct. 25, 1924 2 sheets-sheet 1 this invention applies, the work travels from Patented Jan. 17, 1928. p

uurr so STATES PATENT OFFICE...

mm; W. cosenoyn, or mnnronn, MASSACHUSETTS, assrenon TO UNITED axon MACHINEBY conroim'rlomcr PATERSON, NEW JERSEY, oonronnrron on NEW annsmz.

COATING MACHINE.

Application me October 25, 1924. Serial No. 345,903.

these rollsrun out of engagement with each other, drops of cement are l1kely to gather upon the pressure-roll and smear the surface of the work which should be kept clean. To avoid this, orto reduce its effect to a minimum, is an object of the invention. '1 therefore provide the pressure-roll with reduced peripheral projections, those presentmg to the applying r011 but a small cementguilierin urface, and with this associate a clcaning meinber conforming to the projections and held thereagainst by the frictional drag otthe roll, which member promptly removes any ot the coating substance which may adhere to the pressure-roll. For this cleaningmember, some such yieldable material'as felt is preferable, this readily adapting itself to the longitudinal contour of the roll V In coatingnuichines of the type to which.

the applying member over a stationary support. with which the coated SlClG contacts.

. his, especially when the pieces .are'thin,

may interfere with their advance, so they will not be. properly delivered to the c011 veyor or other apparatus which is to re-.

ceive them. To render the delivery more positive is an object of the. invention, this being attained by placing in co-operation with the fixed support a member, which 6X5 tends through and is movable to advance thework over said support. As illustrated, this work-engaging member is rotatable, and when the supporting member isformed, as usually the case, of spaced fingers, the

member has projections extending between".

such lingers. I have found a brushhaving separated rows of fibers suitable for this. purpose. The. work-advancing member may aiso he made to serve as a stripper for one of the rolls acting upon the work for the application of the coating. In the present instance, thisrotatable advancing member co-operatesat its periphery with the a plying member. It is sometimes desirab e to 'member.

positively continue the advance of the work through the coating machine after it has left the fixed support, and to this end I may employ another advancing member, as a roll having peripheral projections, to reduce the area of contact with the coated side of the work, said member being'situated at the opposite side of the support from the applying member.

In applying cement, there is likelyfto accumulate at the forward end of the support over which the work leaves the cementing machine, drops of the substance. From these may be drawn strings, which gather to such an extent upon the turning device or conveyor, by which the work is received, that operation is affected. A further object of the invention to furnish means for re tamin these strings at the cementingmachine. This I accomplish by associating with the support, at the opposite side from] the a 'uply ng member, aiwall which extends into proximity with the line of travel of the 5 work. Againstthis wall, the cement-strings are drawn and arrested. There may be associated with the wall an adjacent wall, spaced fro n and preferablylower than its companion. The two walls form opposite SiilGS oil a conduit, by which the retained strings are received, the cement beingconveniently returned to the source of supply, as to a tank in which operates the applying VVh en a roll is used'as a of the supporting and work-advancmg or- QfgllliZfltlOIl, the inner wall. which is also the ortion lower, may contact with the roll and function as a scraper therefor. Both of the walls are shown as variable in position, so they may be caused to not most efiectively.

ne of the several embodiments which my invention may assume appears in the accompanying drawings,

Fig. 1 being a top )lan view of a cement ing machine to whic this invention is ap- .plledi 1 y Fig. 2, a broken end elevation of the for ward extremity of the machine; and

Pi 3, a vertical, longitudinal section on theline III-:III of Fig. 1.

A tank 10 is so tormedas to act bothasa base for-the machine and a source of supply of the cement or other substance to be a pliedjto the work. Journaled transverse y I of this tank, aboutmidway of its height, is a shaft 12, driven from any convenlent source of power and having fast upon it an applying member, furnished by a roll 14. The diameter of this roll is such that its lower portion lies in proximity to the bottom of the tank, while at its top it extends somewhat above the upper edges of the tankwalls. There are shown as extending longitudinally through it, openings 16, which aid in the agitation of the contents of the tank. This tank is extended rearwardly from the applying roll, and has a cover 18, furnishing a table upon which the work-pieces are fed to the applying roll.

Rising from the sides of the tank, just at the rear of the roll 14, are standards 20, 20, which may be connected at their upper extremities by a cross-bar 22. Between the standards extends a spindle 24, about which a carrier 26 is mounted to oscillate. The carrier has forwardly extending arms 28, 28, situated, respectively, near the opposite sides of the tank, and in which are journaled spindles at the end of a roll 30 acting as a pressure member to 'hold the work into contact with the roll 14 to receive the application of the coating substance. From the carrier 26 are two upward projections 32, 32, extending between opposite spaced walls 34 and 36 of a positioning member 38, which is mounted to turn upon the spindle 24 at the end of the carrier. Between the bar 36 of the positioning member and the cross-bar 22, and seated in a depression in the latter, is a spring 40, which acts to turn the positioning member in an anti-clockwise direction, as viewed in Fig. 3 of the drawings, movement in this direction being adjustably arrested by a screw 48 threaded through the bar 34 and contacting with the cross-bar 22.

The carrier 26 is turned, to press the roll 30 downwardly, by springs 46, weaker than the spring 40, abutting at their ends against the projections 32 and against the bar 34, respectively, and held against displacement by screws 42. These springs urge the projections against stop-screws 44 threaded through the bar 36. The carrier may thus move with the, positioning member against the spring 40, and may also move independ cntly of the positioning member by compressing the springs 46. The organization is such that the normal relation of the roll 30 tothe roll 14 may be determined by ad justment of the screw 48 and held by the spring 40. This adjustment adapts the apparatus to best operate upon groups of workpieces in which there i a difference in thickness between the groups. Then, during the passage through the machine of these groups of pieces, which may, in themselves, vary in thickness, the springs 46 are compressed by the movement of the roll 30, the spring 40 remaining unaffected on account of its greater strength. Since the condition of the springs 46 was not varied in the initial adjustment, which involved only the sprin 40, the pressure applied to the work, an therefore, its effect in distributing the coating and determining the amount applied, remains substantially unaltered, whatever the thickness of the particular piece of work. The roll 30 has a series of peripheral projections 50, the edges of which are reduced so that the total area over which they contact with the Work is but sli ht. Conseuently, if cement adheres to t is roll, but little is transferred to the work. To clean the roll 30 if cement thus ets upon it, a strip 52, of some such yielda 1e material as felt, contacts with the down-going side. This strip is shown as in the form of a wedge (Fig. 3), pressed into the space between t e periphery of the roll and vertical walls of the members 26 and 36. Seated in this space, it conforms to the contour of the roll, so that, as the latter rotates, the felt is dragged into the space by frictional contact with the roll 30 so that it is continually urged into tight engagement with the roll and the entire surface of the latter is cleaned. The strip 52 is retained against upward displacement by some such elongated member as a rod 54, shown as forced between the strip and the projecting ends of the screws 44. The roll 30 is rotated from the counter-shaft 56 by spur-gearing 58. the direction of movement of both this roll and the applying roll 14 being such that the work-pieces are fed forward from the table 18.

These rolls, which rotate at a considerable speed, eject the work, consisting, for example, of insoles used in making rubbershoes. and upon a support, preferably furnished by a grid 62 in the form of a hollow frame, the work-engaging surfaces of which are furnished by the reduced upper edges of fingers 64 extending outwardly from one side of said frame in a direction opposite to the direction of travel of the work toward the applying roll, The fingers 64 lie above the down-going side of the applying roll, so

that any cement dripping from them 15 returned to the tank. Other fingers 65 extend inwardly from the other side of the hollow frame in the same direction. When thin stock is operated upon, the momentum im-- tongue as. the applying roll from the shaft fifiuby way of a roll 70 journaled. at the forward extremity ofthe tank. This roll 70in rotated. by sprocket-gearing 72.. from the 56,

and, in turn, communicates itsnmotion diameter of which is such that. they. extend.

to: substantially the same height as the ends of the bruslufibers, though, asindicated in Fig. 3 of the drawings, they may be somewhat below I these. the-downward incline facilitating the advance of the work, This roll 70, the direction of rotation of which is thesame as that of the brush, efiectively continues the travel of the. work, carrying t from theniachine to whateverwappa-ratus 1s to receive it. At its lower side, the fibers of the roll 66 neferably come into close roximity to the surface of the applying r01 14. As a result of this, they act as a stripper,

so, if by any chance a work-piece fails to be reinovcd from the applying rollby the forward ends of the grid-bats, the brush fibers, in their upward rotation, will. engage this piece, and remove it from the applying roll, transferring it to the top of the grid. A scraper 78 may be associated with the brush. to remove the excess of cement from its fibers;

A certain amount of cement from. the coat ed side of the work naturally adheres to the supporting elements, and at. the last of thesethe roll 70 -strings of cement form, which, acted upon, probably by the air currents produced by. the rapid travel of the work and by-the advancing means, are drawn forward and gather upontho conveyor or other apparatus to. which the work is delivered, tending to interfere with its action.

Y ter. Cement drawn from the niachinein the To retain these strings at the cementing apparatus, the tank '10 is extended by a casing 80. shown as wparable, this casing being of substantially the same width as the tank, and narrow longitudinally thereof. Its open top appears as somewhat above the adjacent end wall of the tank, while its lower communicates through an opening 82 with the bottom of the tanln Above the top of the casing, and at; the forward side, is a strinwarresting wall 84, the height of which is such that its. upper edge lies in close proxin'iity to the path of the workpieces as they are thrown forward from the roll 70. Across the opposite or rear side of the casing is a second wall 86, shown as rearwardly inclined at its upper edge 88 and slotted (Figs; 1 and 2). so that it generally CUDIEOIHIS- to the longitudinal contour of the roll 70. acting as a scraper therefor. To both the walls. 84' and 86 are connected it end walls 90, extended downwardly into the casing and. having vertical slots to: receive transverse bolts: 92; The outerends of these bolts extend: he ondthe Walls of the casing,

and are threaed to receire wingnuts 94. loosening these nuts, the walls: 84 and 86 may be vanedsimultaneously, both as to their hueiht and inclination, and fixed in position y again tightening the nuts; In this way, their positions may be made such as'to best intercept the cement-stringsboth from following. the work in its advance,'and from being carried back, when arrested, to the roll 70. Thelocation of the edge 880i the wall. 86 also determines the manner in which it cleans the roll 70. Together, the walls: 84 and 86 act as a conduit, continuing that formed by the casing 80 and returning the collected cement to the tank through the openin 82.

Inso es or other work-pieces laid upon the table. 18 are advanced by the operator between the applying roll 14 and the pressureroll 30. T e screws wand 46 are respectively adjusted in accordance with the av erage thickness of the group of work-pieces tobeoperated upon and the pressure which it is desired to exert to distribute the comerit overthe work, so that, in all cases, the coating applied by the roll 14 will be substantially uniform. From the rolls 14. and 30, the work is advanced upon thefingers 64 and of the grid, and positively moved forward by the brush-fibers 68, andthen by the projections of the roll 76, whichdeliver it to the succeeding apparatus. The roll 30, because of the small'area of contact of its projections with the work and the efficient n'ianuer in which it is cleaned by the yieldeble stri 52, has little or no tendency to smear t uncoated side of the work, while alike limited contact ofthe'brush and roll with the opposite side of the work removes but little ofits coating from thelatdirection of advance of the work is arrested by the wallBi, and passed between this and the wallflfi through thecasing to the tank, the inner wall not only serving to direct the retained substance through the casing,-but also to scrape the roll. 70.- This retaming and roll-cleaning action is made more certain by the Jroper adjustment of the walls through their movement upon the bolts 92.

Havingdescribed my invention, what I claim as new and desire to secure byLetters Patent of the United States is:

1. In a coating niachine, a rotatablefapplying roll, a rotatable pressurc-roll cooperating therewith, a support for the pressure-roll provided with a wall disposed beside said pressure-roll adjacent to the workengegmg surface of .said pressure 'oH to form a constricted space, and a strip of yicldable material positioned between the between the wall of the support and the work-engaging surface and retained in engagement therewith by frictional contact, and a retaining member contacting wit-h the strip between the face of the support and the pressure-roll.

3. In a coating machine, an applying member, a hollow frame provided with a set of supporting fingers projecting toward said member over which the work travels from the applying member, said fingers being spaced from one another and extending in the direction of travel, said frame having another set of fingers extending in the same direction within the frame, and a rotatable member having work-engaging projections extending between the fingers of one set.

4.. In a coating machine, an applying member, supporting fingers over which the work travels 'from the applying member, said fingers being spaced from one another and extending in the direction of travel, and arotatable roll having separated rows of fibers extending between the fingers into engagement with the work. a

5. In a coating machine, an applying member, a cor-operating pressure member, and a member rotatable in contact with the coated side of the work to advance it from the applying member. said rotatable memberbeing arranged to engage work which is in contact with the applying member and strip it therefrom.

6. In a coating machine, a rotatable applying roll, a tank for coating fluid in which the roll operates, and a rotatable member receiving coated work from the top of'the roll to advance it, said member also co'-op crating with the clown-going sideot the roll. to strip work from said roll.

7. In a coating machine, a rotatable roll acting upon the work in the application of the coating, and a rotatable member arranged toadvance work from the roll and to strip work from said roll.

8. In a coating machine, an applying member, a stationary support over which the work travels from the applying member, and a member cooperating with and movable to advance the work port and also co-operating with the applying member to strip work therefrom.

'9. In a coating machine, an applying over. the supmember, supporting fingers over which the work trave s from the a plying member, said fingers being spaced From one another transversely of the direction of travel, and a rotatable member having projections extendingbetween the fingers upwardly into engagement with the work and downwardly into co-operation with the applying member tostrip work therefrom.

10. In a coating machine, an applying member, supporting fingers over which the work travels from the applying member, said fingers being spaced from one another and extending in the direction of travel, a work-advancing member movable between the fingers, and another work-advancing member acting after the first-named workadvancing member situated beyond the support from the applying member.

11. In a coating machine, an applying member, supporting fingers over which the work travels from the applying member, said fingers being spaced from one another and extending in the direction of travel, a work-advancing member movable between the fingers, and a roll rotatable beyond the support from the applying member and having peripheral projections for contact with the workafter the latter has been advanced by said work-advancing means.

.12. In a coating machine, a tank for coating fluid, an applying roll rotatable therein, a fixed support receiving coated pieces of work, a plurality of rolls journaled one beyond another in the direction of travel of the work from the applying member adjacent to said support, means for rotating the rolls to advance the work over said support to a point beyond the tank, and means for intercepting cement strings formed bet-ween the last roll and the work.

13. In a coating machine, a tank for coating fluid, an applying roll rotatable therein, a pluralityof rolls journaled one beyond another in the direction of travel of the work from the applying member, means for rotating the rolls to advance the work beyond the tank, a work-supporting grid between the fingers of which one of the advancing rolls projects, and means for intercepting cement strings formed between the last roll and the work,

14. In a cementing machine, a cement-applying member, a support over which work is advanced from the applying member, and a wall situated at the opposite side of the support from the applying member and extending into proximity with but spaced below the line of travel of the work after it leaves the support. a

15. In acementing machine, a cement-applying member, a support over which work is advanced from the applying member, a

wall situated at the opposite side of the support from the applying member and extend ing into proximity with but spaced below the line of travel of the Work after it leaves the support, and means arranged to permit the relation of the wall to the support to be varied.

16. In a cementing machine, a cement-applying member, a support over which work is advanced from the applying member, a wall situated at the opposite side of the sup port from the applying member and extending into proximity with but spaced below the line of travel of the work after it leaves the support, and a mounting for said wall permitting its height and angle to be varied.

17. In a cementing machine, a cement-applying member, a support over which work is advanced from the applying member, and adjustable walls spaced from each other at the opposite side of the support from the applying member, one of said walls extending upwardly into proximity with but spaced below the line of travel of the work after it leaves the support.

18. In a cementing machine, a cement-applying member, asupport over which Work is advanced from the applying member, and walls situated at the opposite side of the support from the applying member andv spaced from each other in the direction of advance of the work, the outer wall being higher than its companion and extending into proximity with but spaced below the level of the upper side of the support.

19. In a cementing machine, a cement-applying member, a roll rotatable to advance work from the applying member, a wall situated at the opposite side of the roll from the applying member and contacting at its upper edge with said roll, and a second wall spaced from and extending above that first mentioned. 7

20. In a cementing machine, a cement-applying member, a roll rotatable to advance work from the applying member, a wall situated at the opposite side of the roll from the appl ingmember and contacting at its upper e ge with said roll, means arranged to permit the relation of the edge of the wall to be varied, and a second wall spaced from and extending above that first mentioned.

21. In a cementing machine, a cementtank, a cement-applying member movable therein, movable means contacting with the cement-coated face of the work for advancing work from the applying member over the tank, and a conduit arranged to gather cement-strings formed at the advancing means.

22. In a cementing machine, a cementtank, a cement-applying member movable therein, movable means contacting with the cement-coated face of the work for advancing work from the applying member over municating with the tank beyond the advancing means, the upper end of the casing being arranged to receive strings formed at the advancing means.

24. In a cementing machine, a cementtank, a cement-applying member movable therein, movable means contacting with the cement-coated face of the work for advancingwork. from the applying member over the tank, a. casing carried upon and communicating with the tank beyond the advancing means, the upper end of the casing being arranged to receive strings formed at the advancing means, and means arranged to permit the string-receiving opening to be varied.

25. In a cementing machine, a cementtank, a cement-applying member rotatable therein, a rotatable roll cont-acting with the cement-coated face of the work for advancing work from the applying member over the tank, and a casin carried upon and communicating with the tank beyond the roll, there being a wall at the forward side of the casing arranged to intercept cementstrings formed at the roll.

26. In a cementing machine, a cementtank, a cement-applying member rotatable therein, a rotatable roll contacting with the cement-coated face of the work for advancing work from the applying member over the tank, a casing carried upon and communicating with the tank beyond the roll, there being a wall at the forward side of the casing arranged to intercept cementstrings formed at the roll, and an opposite wall contacting with said roll.

. 27. In a cementing machine, a cementtank, a cement-applying member rotatable therein, a rotatable roll contacting with the cement-coated face of the work for advancing work from the applying member over the tank, a casing carried upon and communicating with the tank beyond the roll, there being a movable wall at the forward side of the casing arranged to intercept cement-strings formed at the roll and an opposite wall contacting with said roll, and a mounting arran ed to permit the positions of the walls to e simultaneously adjusted.

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

JOHN w. cosenovn.

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