US1993718A - Coating apparatus - Google Patents

Description

G. A. MINER COATING APPARATUS March 5, 1935.

Filed Nov 16, 1951 Patented Mm. 5,

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wardly toward the bar 20, to prevent leakage of the adhesive between them, by a sleeve 26 surrounding the shaft and threaded into the arm 10. Opposite and alined front and rear gates 28 and 30, respectively, slidable upon the tops of the side-plates, control the delivery of the adhesive from the chamber 14 to the roll R, and outer and inner scrapers 32 and 34, respectively, at-

' tached to the tops of the side-plates, clean the opposite edges of the roll in a manner which will be later developed.

Considering the structure of the roll R, this has an outer disk or head 40, fromwhich, concentric to the axis, projects an integral hub or sleeve 42 surrounding the end of the shaft 22 and carrying a portion of the coupling 24, which compels the shaft and roll to turn together. This hub 42 constitutes'a rotatable support for the roll R. About the opposite or inner extremity of the sleeve is an inner disk or head 44. The two heads may be secured to each other by screws '46 extending through openings in the outer head and threaded into the inner. Clarnped between the heads is a frusto-conical rollor body-portion 48 converging inwardly toward the head 44 and in direct contact at its outer end with the head 40. At its inner end, a relatively thin disk 50, provided at its periphery with work-feeding projections or teeth, is interposed between the element 48 and the head 44, the teeth projecting slightly outside the periphery of the former. The rollportion 48 is'of porous and readily compressible material, the best now known to me for the purpose being sponge-rubber, the passages opening through the peripheral applying surface of which are of considerable diameter, say from .015 to .050 of an inch, so they willhold substantial quantities of the adhesive. It will be obvious that any spongy material of rubber-like nature will be the full equivalent, for the purposes of this invention, of the sponge-rubber above mentioned. To strengthen the body portion 48 to receive the clamping force without undue distortion, it is shown as having a central section or core 52 of solidrubber, and also imperforate heads or endwa1ls5'4, 54 of rubber, which render more stable the surface which contacts with the adjacent ele-' ments. Thus, it will be seen that the imperforate layers add mechanical strength to the spongerubber to resist the tangential pull offered by the friction between the roll and the work, and aid materially in preventing crumbling of the rubber. The imperforate layers perform also the function of keeping the spongy material and thejcoating material. from being pushed out laterally and, thus, enable the rollto apply a stripe of coating material of unvarying width'to the work, the lateral limits of this stripe being well defined. The conical rubber applying surface preferably extends radially somewhat outside the periphery of the head 40, so the greater part of the surface of the element 48 may be considerably compressed by the application of the work to it. The head 44 is chambered to receive 'the adhesive, having formed in its inner face an annular groove 56 closed by the disk 50'to form a passage fromwhich lead similarly closed passages 58, these, as illustrated, being first substantially radial and then each having anouter'inclined wall 60 terminating in a reduced outer edge 62 of the head 44; The passages 58 are shown as saparated by walls 63 integral with the head. This system of passages, arranged for contact with the work along the outer edge of the stripe of applied cement, permits the taking up of excessive deposits of adhesive from the work. The plate 32 may be so set as to strip clean the periphery of the head 40. The plate 34 is shown as having a transverse slot 64, which receives and frictionally retains a verticalscraper blade 66 for engagement at its lower edge with the periphery of the head 44 over the passages 58. With the blade in its slot, the supporting plate 34 may be pressed into place whereupon the lower edge of the blade adjusts itself to the periphery of the head or is pressed down by the operator, being held frictionally in the slot and insuring the proper cleaning action. If desired, a like blade 67 may becarried in a longitudinal slot in the plate 32; This is most useful in guarding against leakagebetween the roll-head 40 and the sideplate 18.

To aid the operator in guiding the work in contact with the roll R; a gage is provided. This gage includes a yieldable arm 68 fixed to the frame portion 10 by slot-and-screw connections 70, w'hich'enabl'e'the operatorlto change its angular'positiony This arm may be of spring-metal, and projectingf'fr'om its under side, in proximity to the edge 62 of'the head 44, is a member 72, preferably somewhat globular, or with its periphery merging by a curve into its upper end. The side of the member 72 furnishes'a contact-surface, which may be, engaged by thevertically curved heeland toe-portions of the upper of a lasted shoe adjacent to the edge of the insole, to maintain it in such relation to the roll R that the shoebottom will be correctly guided beneath the roll to receive theadhesive over the desired area. Upon reaching the shank-portion of the shoe, the workengaging surface of the member 72changes, the portion of the upper projecting outwardly from the edge of the insole reaching a contact-surface at or near the end of the member. At this time, the curvature of the shank, considered vertically, inclines downwardly away from the applying. roll R, and the operator forces the shoe upward to-, wardthe roll to maintain its engagement therewith. Continued contact of the end of the gage member 72 with the work, without interference, is permitted by. the upward yield of the springarm 68. As the shank-portion is passed, the contact again shifts to the side of the member 72, thespring-arm returning to its'normal position, and the guiding action being constantlyexerted. To facilitate the advance of the work over the gage, the member 72 may, if desired, be mounted to rotate on its arm.

,In using this apparatus, the adhesive from the potll passes to the chamber 12 and is taken there'- from by the roll R to an amount determined by the adjustment of the gate 28. The work to be coated may consist of shoe-uppers, such as that shown atU in Fig. 2, carried by a last L and having a margin u drawn over and secured to the insole I. While the gathered margin will have been-treated to smooth it and generally prepare it for the reception of the adhesive, there may remain many depressions; and if metallic fastenings have been used to secure the upper,,these may cause irregularities. When a surface u of thischaracter is pressed against the roll R, the gage member '72 will locate the outer edge of this margin beneaththe periphery of the roll-head 44, the thin edge 62 registering. with the line upon the upper determined by the edge of the insole. The periphery of the head 40 will then. be substantially alined with the inner edge of the lasted-over margin, the width of the roll being such as to give this relation. The operator v presses the shoe-bottom stream meaete rerwerd peaies the ioll, and sresseu tetweti tiie meat ssufeats-liar moves it 'ie arwaral y in 'tli 'dii e tan ih portion f solid rubber n butefipoi tion'bf "this'eoiitaot surfajce df the rell'dsEfdt'a ng',- ssitg mtte'r ru nistm ppl'yi gsurfahe.

rotatable l aftf a ear as s h' i ee the frusto-conical surface f t-lie fll' pbi tiohfit, f'f ammeasin'girn:uiameternnwamiyrefitnasm and thesyieiuability rofthe 'spme nibuer insure the eessa y adh fia pryme eentaet er the re- 'maindenof the mar g'in u with the rol1'."-'When1podk'- Jets-1m drreguiar areas :upcn the suiface or {the work re'ac'h tlie roll, thezzaunsive cuntained' m -the'ipass'agesmf th'e sponge riibb'erflis forced out to fill the depressions, they furnishing reservoirs awhich aretdrawniuponsto.providegtunder allicoiidi- 5 .tionsgasunface of thecapplied adhesiveewhioh will .be-practicall-y unijfiorrn I-heiadhesiveis preventaed from overrunning the chosen rarea-fltrtherinner sideby the cleaning-notion of; the: plate;32 or its bladeB Lupon tnelp r iph 'ry dfftheaie 4 flier however, the conditionis'v not a or ical oh e, though it: i 's desir'abl w fi e'q et m wf llt aneuver the'peripheryofftheheatl 44 noto-iilyclea d coating of the adhesive, but, if excessive deposits by the rdll portfon 48 occur, due perhaps to the very irregular surface operated upon; such bodies of adhesive, pressed out upon the periphery of the head 44, will. come over the mouths of the passages 58. Into these passages the excess will enter, the inward movement away from the rollpand outwardly without harmful effect. In this manner, the operator continues about the entire margin n of the shoe-upper, the contact with the member '72 of the gage shifting from its side to-,

ward its bottom as an end-portion or shank-portion of the upper is operated upon. V

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

1. In a coating apparatus, a shaft, an applying roll removably. mounted thereon and having a rigid hub, an inner portion of compressible solid rubber and an outer portion of sponge-rubber furnishing an applying surface.

2. In a shoe-coating apparatus, a disk-like sponge-rubber applying roll' the width of which-is small in comparison with its diameter, said roll being provided with a work-contacting coatingema terial-carrying body-portion, which body-portion comprises a mass'of spongy material and has at each end an integral, imperforate layer strengthening said body-portion and restricting the escape of coating material laterally.

3. In a coating apparatus, an applying roll having a rigid hub, an inner portion of solid rubaee "ren wa s a A. and wing; tlie adhesive from ftgtid f'suppl ng tiieresrdiii etire h 4 'bss 5f the aaiiesiveisquetes from the applying surface by the pressure of work applied to tlie iaife' iin'd at as hd arfgi'dfpo tio p r a series era's-"stages ds'esmg throagh its periphcry and a connecting passage within said passages and into which they lead. I

9. In a coating apparatus, adhesive-supplying I means, a rotatable, substantially-cylmdrical, applying roll receiving'the adhesive therefrom and having a peripheral applying surface and at its end a portion provided with aseries of passages 0 opening through its periphery'along the edge of the applying surface and with their outer walls inclined inwardly from a reduced peripheral edge at'the end of theroll and'terminating at their inner ends a connecting passage.

10. In an adhesive-applying apparatus, ad'- hesive-supplying means, and a rotatable roll receiving the adhesive therefrom, said roll having opposite heads and an intermediate applying portion of rubber, there being in one of the heads adhesive-receivingpassages opening at the periphery of the roll alongthe margin of the Workcontacting surface.

11. In an adhesive applying' apparatus, adhe-' sive-supplying means, and a rotatable roll receiving the adhesive therefrom, said roll having opposite heads, an intermediate applying portion of rubber and a peripherally toothed feed-disk at the inner side of one of. the heads adjacent to the rubber portion. 1 Y I 12. In an adhesive-applying apparatus, adhesive-supplying means, and a rotatable roll receiving the adhesive therefrom, said roll having, opposite heads, anintermediate' applying portion 65 of rubber, there being in one of the heads adhesive-receiving passages, and a toothed disk situated between the passages and the rubber portion. I

13. In an adhesive-applying apparatus, 'a rotatable applying roll having opposite heads; in one of which are adhesive-receiving passages terminating at the periphery of the roll and a ing in diameter from' the head with the passages toward the opposite head.

1.4. In an adhesive-applying apparatus, a -rotatable applying rollrhaving opposite heads, in one of which are adhesive-receiving passages,'a yielclableportion situated between the heads and with its peripheral applying surface increasing in diameter from the head with the passages toward the opposite head and a toothed feed-disk interposed between the end of the yieldable portion of minimum diameter and the adjacent head. 15. In a coating apparatus, a tank having a bottom outlet, a casing receiving coating ma terial from said outlet, a rotatable applying roll insaid casing, a plate interposed between the roll and the tank and provided witha slot lying transversely of the roll, and a blade'movable in the slot and co-operating with the face of the roll. 1

'16. In a coating apparatus, an adhesive re septacle, a rotatable applying roll beneath said receptacle and receiving adhesive therefrom, said applying roll having an applying surface and, at its end, a series of passages opening outwardly through its periphery andan annular passage into which the peripheral passages lead, and means for controlling the passage of adhesive from the receptacle to the applying roll comprising a plate extending above the roll and provided with a slot lying transversely of the roll, said means also comprising a blade movable in the slot and cooperating with the outer ends of the passages which open through the periphery.

17. In a, coating apparatus, adhesive-supply ing means having'an outlet at the bottom, a rotatable applying roll positioned below said outlet and receiving the adhesive therefrom and havingian applying surface and at its end radial passages opening into theapplying surface, and

a scraperco operating withthe roll at the outer ends of the passages. I

18. In an apparatus for; coating the bottoms of shoes; an adhesive-receptacle, an applying roll rotatable below the receptacle, and a springarm extendingtoa point adjacent to one side of the roll and having a globular projection with a smoothly rounded under surface depending from the under side of the-arm for contact with a shoe-upper. V a

19. In an apparatus for coating the bottoms of shoes, an adhesive receptacle, a driven apply- GEORGE A. MINER.

CERTIFICATE OF CQRREIITION.

Patent No. I, 93,7l8. March 5, 1935.

GEORGE A. MINER.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, first column, line 6, for "past" read path; and second column, line 45, claim 9, after "ends" insert the word in; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 18th day of June, A. D. 1935.

i Leslie Frazer (Seal) Acting Commissioner of Patents.

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