US1869691A - Coating apparatus - Google Patents

Description

Alg- 2 1932 E, c; HOPKINS 1,869,691

GOATING APPARATUS Filed April 19., 1930 E JM@- Patented Aug. 2, 1932 tatami ETHAN CHARLES HOPKINS, OF BELMONT, MASSACHUSETTS, ASSIGNOR TO THE IB. F.

GOODRICH COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK coATrNG APPARATUS Application led April 19,

This invention relates to coating apparatus, and moreespecially it relates to apparatus for applying a coating of adhesive mate-V The chief objects of the invention are to obtain substantial uniformity of distribution of the adhesive upon the work; to effect uniformity and accuracy in the width and position of the coated area; to conserve the adhesive material 5 and to provide improved apparatus for attainingthe foregoing objects in an economical and facile mannen- Of the accompanying drawing: Y Fig. 1 is an elevation of apparatus embodying my invention' in its preferred form, and the work -in operative association therewith, a part of the apparatus being broken away and sectioned. l Y Y Fig. 2 is a perspective view of the work after treatment by my improved apparatus.

Referring to the drawing, 10 is a container or receptacle having an open top, 11 is a shaft journalled in opposite walls thereof, and 12 is a disc mounted vupon the shaft 11, within the container, and adapted to rotate with said shaft, the top of the disc 12 extending above the top ofthe container. One end of the shaft 11, outside the container, is provided with a pulley 13 connected by a belt 14 with a suitable source of driving power (not shown) for rotating the shaft in the direction indicatedby thearrow in Fig. 1.

Angle- brackets 15, 16 aremounted upon the respective end walls of the container 10, adjacent the top thereof, by any suitable means such `as the bolts 17, 17, and the latter extend through respective vertical slots 18, 18 formed in the brackets whereby limited vertical adjustment of the brackets is permitted. The angle portions of the brackets 15, 16 are positioned above the container 10, and carry respectively a work-.supporting plate 19 `and a gauge and guard plate 20, the plate 19 being hinged'at 19a to a plate19b which is secured to the bracket 15. rilhe plates 19h, 2O are secured to their respective brack- 1930. Serial No. 445,662.

ets by thumbscrews 21, 21 which extend through slots 22', 22 formed inthe brackets 15, 16, the arrangement being such that the plates are adjustable towardand away from each in their own planes. Preferably the adjacent edges of the plates 19, 20 are tapered or beveled as shown. A leaf spring 1,5a is secured to the bracket 15 and bears against the under side of the plate 19 to support the same normally in the elevated broken line positionof Fig. 1.

Y The periphery of the disc 12 is formed with a centrally disposed circumferential groove 23, and a circumferential series of fingers 24, 24 are pivotally mounted insaid groove, at regular intervals, upon pins 25, 25 which are'securedin the disc-walls or flanges at the AVV sides of the groove. Each ing'er 25 is'formed interiorly with a recess 26 extending from its trailing edge and embracing the pin 25,

anda leafspring 27 is mounted in saidrecess behind the pin 25 and has its respective ends bearing against the trailing edge of the finger and the bottom ofthe groove 23, the varrangement being such that the linger' is yieldingly urged forward about itspivot-pin 25. A set-screw 28 threaded into the bottom of the groove 28 under the forward corner of the finger provides an adjustable stop for the finger and determines its ynormal position,

which 'is-substantially radial of the disc 12.

The leading edge of each finger 24, in the region outsidethedisc 12, is concave as shown at 29, 29, for the purpose of making substan ytial face to face contact with `thework, and

to provide an edge vor corner which will scrape over the work as the linger is moved ypast thev same. The work, as vshown herein, consists of the insole andlining 31 of a rubber and fabric overshoe, the same being mounted upon a last 32. Y

The fingers 24 are adaptedto apply a coating of adhesive, suchv as rubber cement, to the lining 31 on each side of the sole-edge thereof,'substantially as shown at 33,'Fig. 2. The adhesive is supplied to the fingers 24 Yby a vfountain brush 34 which extends into the orbit of the fingers, and is engaged by the latter 4immediately before they engage the work. The fountain brush 34 is mounted inthe end of a pipe 35 which extends through the plate 20 and communicates With a source of supply of cement (not shown). The cement in the pipe 35 is under pressure and a cock 36 is mounted in the pipe for regulating the flow of cement to the brush 34.

ln the operation of the apparatus, the latter is initially adjusted so as to apply a coating of proper Width both on the upper and on the sole face of the Work. The adjustability of the brackets 15, 16 and the plates 19, 2() makes it possible to position the plates with relation to each other and with relation to the rotatable disc 12 and fingers 24. ln the operative positions of the plates 19, 20 the ententA to Which they are spaced apart from each other in a horizontal direction defines the Width of the region on the sole face of the Work which is to be cemented, and their separation in a vertical direction when the plate 19 is in the operative, full-line position shown defines the Width of the cementing Zone on the sides of the Work, Which Zone however cannot be greater than the length of the lingers 24.

lVit-h the respective parts of the apparatus adjusted as described, the disc 12 is set in motion in the direction indicated by the arrow inV Fig. 1, and the cock 36 is turned to permit adhesive material in the pipe 35 to iow to the fountain brush 34 Where the adhesive is applied to the concave leading edges of the lingers 24 as they move in succession into engagement lwith the brush as the disc i2 is rotated. The Work is then so positioned upon the plate 19 that its side abuts the adjacentedge of the plate V2O, the Weight of the Work depressing` the plate 19 against the spring 15a to the full-line position shown. VvThen so positioned, the fingers 24C engage the side of the Work With their concave leading edges and transfer the adhesive thereon to the Work. The hinged construction of the finger permits them to tilt backward against the pressure of their springs 27 and thus they pass the sole-edge of the Work andare drawn under the latter, whereby part of the adhesive on the fingers is wiped onto thebottom of the Work. rllhe engagement of the t'ing ,ers with the Work is terminated when the fingers engage the tapered edge of the plate 19 upon which the Work rests. The Work is manually turned upon its support to present its sole-edge progressively to the fingers 24 until each side of said edge is treated with aohesive, completely around the sole as is clearly shown at 33, Fig. 2. When the cementinef operation is completed the Work is removed from the plate 19, which plate immediately resumes the broken line position shown in the drawing so as not to be in position to intercept the lingers 24 during the time-required to remove the treated Work and replace it with untreated work.

The invention is susceptible of modification Within the scope of the appended claims as I do not limit my claims Wholly to the specific construction shown and described.

l claim:

1. In coating apparatus, the combination of a rotatable member and means for driving the same, a circumferential series of rigid fingers pivotally mounted thereon, means for applying coating material to said lingers, means determinately positioning the Work inthe orbit of said fingers, and a guard extending substantially from the materialapplying means to the Work to prevent unintended disposition of the coating materia-l.

2. ln coating apparatus, the combination of a rotatable member and means for driving the same, Work engaging elements pivoted at the periphery of said member and adapted to slide successively over two faces of the Work, means for supplying coating material to said Work-engaging elements, and means for positioning the Work in the orbit of the Work-engaging means so as concurrently to expose a determinate limited area of two faces of the Work to the latter.

3. In coating apparatus, the combination of a rotatable member and means for driving the same, a. circumferential series of rigid Work-engaging members pivoted on said member, a fountain brush` in the orbit of said Work-engaging members adapted to apply viscous material thereto, means for supplying viscous material to said brush, and a Work-support adapted to permit a determinate limited area of the Work to extend into the orbit of the Work-engaging members.

1. In coating apparatus, the combination of a rotatable member and means for driving the same, a circumferential series of Workengaging lingers pivotally mounted on said member, means for supplying coating material to said fingers, means for positioning Work in the orbit of the fingers, and yielding means normally holding said fingers substantially radially of the member yet permitting them to tilt upon impact with the Work.

5. Coating apparatus comprising a rotary member, and Work-engaging members pivotally mounted thereon, the leading edges of the latter being concave.

6. Coating apparatus comprising, in combination, a supporting structure movable Vpast a Work station, a plurality of Workengaging members pivoted on said structure, each of said members having a leading toe portion adapted to engage and slide over the Work, and means for supplying coating material to said members.

, 7. Coating apparatus comprising, in combination, a supporting structure movable past a Work station, a plurality of members mounted on said structure and adapted by a sliding movement over the Work to apply coating material thereto, means for applying coating material to said members, means determinately positioning the Work in the path of said members, and a guard member eX- tending substantially from the material applying means to the Work to prevent unintended disposition of the coatingmaterial upon the Work. 8. Coating apparatus comprising, in combination, a supporting structure movable past a Work station, a plurality of members mounted on said structure and adapted by a sliding movement over the Work to apply l5 coating material thereto, means for applying coating material to said members, and a structure for restricting the application of the coating material to a limited portion of Work positioned in the path of'said members, the last said structure having a plurality of Work contacting elements including a guard surface extending substantially from the material applying means to the Work.

9. Coating apparatus comprising, in combination, a supporting structure movable past a Work station, a plurality of Work-engaging members pivoted on said structure, each of said members having a concave Work-engag ing edge and a leading toe portion adapted to slide over the Work, and means for supplying coating material to said members.

l0. Coating apparatus comprising, in combination, a supporting structure movable past a Work station, a plurality of Workengaging members mounted on said structure, means for applying coating material to said members, a structure. comprising a plurality of Work-contacting elements for restricting the application of the coating ma- 40 terial to a limited portion of Work positioned in the path of said members, at least one of said elements being mounted for movement into and out of the path of said members.

1l. Coating apparatus as defined in claim l0 comprising resilient means for urging the said movable Work-contacting element out of the path of the Work-engaging members.

In Witness whereof I have hereunto set my hand this 14th da of April, 1930. ETHAN HARLES HOPKINS..

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