US1741486A - Coating apparatus - Google Patents

Description

' De@ 31, 1929 c. B. TIBBETTs ET AL /NVENTDRS COAII'ING APPARATUS Filed May 9, 1924 :i @Si m a@ Patented Dec. 31, 1929 UNITED STATES PATENT OFFICE CHARLES B. TIBBETTS, OF WALPOLE, AND HAROLD L. SAWYER, OF LYNN, MASSA- CHUSETTS, ASSIGNORS TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY COATING APPARATUS Appucation inea May e, 1924. serial No. 712,004.

This invention relates to such coating ap paratus asthat employed for the pasting of linings or other portions of shoes.

Such an organization is disclosed in Patent N o. 1,467,343, Tibbetts, Sept. 11, 1923, in which an applying member, in the form of Va grid having spaced bars or applying portions, is arrangedto be reciprocated between two eXtreme positions-one in which it is immersed in a body of adhesive contained in a receptacle, and the other in which it is so raised above` the surface of the adhesive that the work to be coated may be pressed upon the applying surface. Under certain conditions, it may be difficult for the operator to properly time the application of the work. For example, to relieve the operator of the burden of treadle-actuation to effect the gridmovement, it may be desirable to associate power mechanism with the apparatus. This preferably acts continuously to reciprocate the grid, and under these conditions, unless the operator applies the work and removes it at the proper time, said work and the operators hands may both be plunged into the adhesive as a result of the depression of the grid below the surface. An object of the invention is to provide an improved machine by means of which the-operator will be relieved of the necessity for exercising care as to the time of application of the work or its correct presentation to thegrid. This end is attained by the association with the spaced portions of an irregularly shaped applying member and its receptacle, of a work-support located in the receptacle below the member and extending upward between the applying portions to a level below that of the operating position of the applying member buti 4o above that of the adhesive in the` receptacle. This at all times maintains the worl above the surface of the' adhesive, regardless of the position of the grid. Since the applying surface, in an effective form, is furnished by curved bars, the supporting device may also consist of correspondingly curved portions lying between the applying bars. The bars or other work-supporting portions may advantageously consist of projections from the bottom of the receptacle, being shown as carried upon a plate.

The accompanying drawing illustrates one of the forms in which the invention may be embodied. Here,

Fig. 1 shows7 in perspective, a pasting appaatus with the improved work-support; an

Figs. 2 and 3 aretransverse sections in which the grid appears, respectively, in its lowered and raised positions.

A pan or receptacle 10, for the paste or other adhesive to be applied, rests upon a bench or like suitable support 12. At opposite'eXtremities of the pan, vertically perforated lugs 14 receive reciprocatory actuating rods 16, which pass downwardly through openings in the table.` Carried removably upon the tops of the vrods by yokes 18 and hangers 2O is an applying member or grid 22. This is made up of bars 24 situated within a rectangular frame, said bars preferably being curved along concentric circles having their center at one side of the grid. Spacing members 26 lie between the gridbars, their upper faces being below the applying surfaces. The entire grid may, if desired, be formed integrally by casting. With the grid-bars having the contour illustrated, the work is coated along separated curved areas, determined by the spacing and form ofthe bars, and since there is a continuous change in the direction of extension of these areas, none of the strands of the fabric operated upon, either the'warp or the weft, will receive an uninterrupted coating for any y great length. Therefore, when the paste dries, the strains set up in the fabric by the natural shrinkage will be so distributed that the work will not be drawn out of shape, but

will remain flat upon the other shoe parts to which it is to adhere.

Below the table, the rods 1G pass through casings 2S and depending guide-brackets 30, and below these they are connected by a cross-bar 32. Extending 'from one side of the bar is a pin 3&1., upon the outer end oi' which is an anti-friction roll entering a camgroove 36 formed in the tace ot a disk 38 fast upon a shaft l0 journaied beneath the bench. Secured upon the shaft Ll() is a wormwheel 412 meshing with a worm lll upon the shaft of a motor 46, which may be electrical, and supported in any convenient manner beneath the bench, Through the connections, the motor rotates the cam-disk at a reduced speed, and imparts to the bar 32 a vertical movement, the groove being so formed that at the upper extreme of this movement there is a dwell, This, transmitted through the rods 16, causes the grid to alternately occupy positions above and below the surface et the adhesive in the pan 10 and to rest ttor a short period in the former to give the operator time to press the work upon the applying surface. After this, the grid descends to receive a fresh coating of paste, and again rises to the workreceiving position. Surrounding each rod 16, within the casing 28, is shown a spring 48, which exerts its force to counterbalance the weight of the grid and actuating parts.

Extending between the bars oi the grid are work-supporting portions 50, shown as occupying each of the spaces between the members 26 and between such members and the frame. As illustrated, they consist of bars, though series of spaced projections might be einployed, and are curved in a horizontal plane similarly to the grid-bars, and in the elevated or work-receiving position oit said grid-bars, lie with their upper edges somewhat below the applying surface, leaving this fully eiii'ective. When the grid is depressed, the supporting bars, which rise above the surface of the adhesive, also extend above the grid-bars, so that objects which may have been resting upon the latter will be held out ot the adhesive. rllhese bars 50 extend upwardly 'from the bottom of the pan l0 through the adhesive. They may be carried by a base-plate 52 resting upon the pan, or may be cast integrally with the latter. Lugs 54;, upon the upper side oi the pan-bottom, are so situated that their contact with the edges ot the plate will position the support with its projections orbars passing accurately through the spaces in the grid, without Contact with the grid-bars or members 26. As a result oi? the use ot such a support, it will be seen that a positive guard is set up against the plunging of the work or the operators hands into the adhesive contained in the pan, and that no attention need be given as to the timing of the application of the work-pieces to the grid, since it this element is not in its receiving position, the

bars 50 will present a supporting surface, and hold the work until the grid has risen to impress the adhesive which it carries upon the work. li', tor any reason, as because ot treadle rather than motor actuation, it is not desired to employ the work-support, it may readily be removed from the pan, and upon return will be definitely located with reference to the grid-openings by the lugs 54. lf this convertibility is not desired, the cost of the structure may be decreased by casting the projections 50 directly upon the pan-bottom.

Having described our inventi n, what we claim as new and desire to secure by Letters Patent et the United States is:

1. ln a coating apparatus, a receptacle tor a coating substance, spaced curved applying bars movable into and out of the substance in the receptacle, and work-supporting bars in the receptacle lying between the applying bars and curved to correspond to the shape ot the spaces therebetween and extending upwardly to a point above the level ofthe coating substance in the receptacle.

2. ln a coating apparatus, a receptacle for a coating substance, spaced crooked applyin@ bars movable into and out of the coating substance in the receptacle, a base member, and projections from'the base member arranged in a similarly crooked outline to eX- tend through the spaces between the bars in their movement into the receptacle upwardly to a point above the level of the coating substance in the receptacle.

8. In a coating apparatus, a receptacle for a coating substance, spaced applying bars movable into and out ot the coatingV substance in thereceptacle, a plate constructed and arranged to be supported upon the bottom of the receptacle, and projections upon the plate extending upwardly between the bars to a point above the level of the coating substance in the receptacle.

4. ln a coating apparatus, a receptacle tor a coating substance, amember movable into and out of the coating substance in the re-k ceptacle and having applying portions spaced from each other, power mechanism for repeatedly moving the member into and out of the coating position constructed and arranged automatically to cause it to dwell in its upper portion and means extending upwardly through the spaces between the applying portions tor constantly supporting the work during the immersion of the applying member by the power mechanism.

5. In a Vcoating apparatus, a trame, a receptacle for a coating substance. carried thereby, a grid having spaced crooked bars forming an applying surface arranged to reciprocate upon the trame into and out oi' the substance in the receptacle, a motor mounted upon the frame and geared to the grid to reciprocate it, and a plate lying at the bottom of the receptacle and having proisn 0 specification.

jections extending upwardly into the openings of the grid to a. point above the level of the coating substance in the receptacle.

In testimony whereof I, the said CHARLES B. TIBBETTS, have signed my name to this specification.

CHARLES B. TIBBETTS. In testimony whereof I, the said HAROLD L. SAWYER, have signed my name' to this HAROLD L. SAWYER.

CERTIFICATE or CORRECTION.

Patent Ne. 1,741,486. Granted December s1, 1929, te

CHARLES B. TIBBETTS ET AL.

It is hereby certified that error appears| in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 117, claim 4, for the word "portion" read position; and that the said Letters Patent should be read with this correction therein that the same may conform to Ithe record of the case in the Patent Office.

Signed and sealed this 9th day of December, A. D. 1930.

M. J. Moore, (Seal) Acting Commissioner of Patents.

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