US1634519A - Pasting machine - Google Patents

Description

Patented July 5, 1927.

UNITED STATES PATENT! OFFICE.

ERNEST E. SABIN, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- CHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PASTING MACHINE.

- My invention relates to machines for applying such adhesives as paste to various object-s, it being especially adapted for the coating of molded counters prior to their application to the shoesof which they are to form a part.

The invention has as an object the provision of effective means for operating upon articles, having the curved contour of a mold-ed contour, to apply a coating of adhesive thereto. This coating may be either internal or both internal and external, as desired. My invention provides an improved machine which, as a result of the form and relation of the members co-operating with the work, applies adhesive uniformly across the entire width of the counter, including the bottom flange, and without the accumulation of an excess of the adhesive at the edges. There is, moreover, no guiding action of the work through the machine required of the operator, who has only to present the articles for engagement by the applying member or members and to remove those which have been coated.

A further object of my invention is to govern the supply of adhesive delivered by the applying member. Preferably, there is exercised a control effective to cause the delivery of adhesive only while the operator is in operating position, the supply at other times being shut off. With this governing means there may also be associated'a control of the volume of flow.

As another object, the invention provides a compact arrangement by which the adhesive may be supplied to the applying memher, and any excess delivered thereto conveniently cared for without undue exposure to drying.

In the accompanying drawing, illustrating a particular embodiment of the invention,

Fig. 1 is a side elevation of my improved pasting machine, parts being broken away;

Fig. 2 is a broken front elevation with the casing in section; and

Fig. 3 is a perspective view of the work-en- 'gaging members and more closely associated parts.

The active elements of the machine are carried by a casing having a base-section 10 and .a removable upper section 12, there being journaled in the upper portion of the latter a horizontaltubular shaft 14 projecting outside the casing, where it carries an applying member, preferably in the form of a brush 16. This brush has a hollow cylindricalbody 18, closed at the outer end by a head 20, the body being connected to the shaft 14 by'a bayonet-joint 22 (Fig. 3), which permits the brush to be removed readily for cleaning. In the periphery of the body 18 are set tufts 24 of bristles or other fibers, the outer surface of which serves to apply the paste, while between these tufts of fibers are openings 26 through the bodywall, these providing passages by which the paste is delivered to the applying surface.

Connected by a union 32 (Fig. 2) to the shaft 14, to supply paste to a chamber 30 within the brush-body, is a pipe or conduit 28. This pipe extends vertically to a point near the bottom of the base, where it turns and enters the casing, passing through a stuffing box 34 into a receptacle 36 for the paste. When this term paste is employed, either in the description or claims, it is to be understood that there is defined thereby any form of adhesive which is suitable for use with the present machine. The receptacle 36 rests upon the lower wall or floor of the casing, access being had to it through the open front of the casing. WVithin the receptacle,-immersed in the contents thereof, is a pump '38, which may be of the double gear type. The inlet opening 40 of this pump, situated at one side of the casing, receives the paste, which is forced through the outlet to which the pipe 28 is connected. .The pump-casing is joined at 42 to the wall of the receptacle, so that the passage of paste into the base is prevented, and through this connection extends a shaft 44, transmitting power to the rotary elements of the pump. The shaft 44 is shown as driven by belt-gearing 46 from a shaft 48 journaled horizontally in the section 12 of the casing. This shaft is, in turn, rotated by worm-gearing 50 from the shaft of a motor 52 supported within the upper casing-section and receiving ourrent through conductors 54 entering the casing through an insulating bushing 56 at the top.

I have illustrated means'for controlling intwoways the delivery of paste through the pipe" 28. Sincethe pump 38 1s a continuously acting mechanism, it is desirable, to prevent waste of the paste, to have the delivery cease when the operator is not in operating position prepared to present work to the applying member. Therefore, there is included in the pipe 28 a valve 58, having ex tending from its stem an arm 60, which is acted upon by a spring 62 to hold the valve normally closed. The arm is joined by a connecting rod 6t to a treadle 66 fulcrumed at the lower portion of the base. When the operator is ready to start work upon the machine, he places his foot upon the treadle,

and lowers the arm 60 against the tension of the spring. This permits the pump, which has been working idly, to force the paste through the pipe into the brush-chamber 30, and through the openings 26 among the fibers and thus to the applying surface. The pipe 28 also has in it a valve 68, which may be manually operated by a wheel 7 0 upon its spindle. Adjustment of this valve varies the rate of flow of the paste through the pipe, and therefore the quantity available upon the surface of the brush for application to the work.

Co-operating with the brush, at its under side, is an engaging member 72 arranged to support the work and hold it pressed against the primary applying surface, and also being itself adapted to apply paste to the work. This roll 72 is attached, preferably by a bayonet-joint 73 (Fig. 3), to a shaft 7% journalled in the casing-section 12 parallel to the brush-shaft 18, and preferably has the longitudinal contour of its periphery substantially corresponding to the transverse contour of a counter which is to be pasted. A molded counter is illustrated at C in the drawing, and by the phrase transverse contour as applied to this counter is meant the form of the side-wall or body a between the bottom-flange a and what is normally the upper edge of the body 0. The outside of the brush, which is of such diameter as to enter and approximately till the space between the opposite walls of the counter-body, also has at its periphery a longitudinal contour generally corresponding to the inside of the counter, but preferably departs from this at the inner extremity, where the ends of the brush-fibers bear with some force against and are deflected by the roll 72, which here is shown as extending somewhat beyond the brush. The purpose of this relation will be explained later. At the outer extremity of the roll is a work-gage, furnished by an annular plate or flange 76, placed close to the sides of the outer brushtibers, but permitting the entrance of a counter-flange. The brush and roll are rotated, preferably at the same soeed, from the shaft .:8 through a chain of spur-gearing 78, one element of which is fixed upon an intermediate idle shaft journaled in the casing between the shafts 48 and 74:, while the others are upon such shafts and that of the brush. I

Ordinarily, counters are not pasted upon their exteriors, and since, when there is no work passing between the brush and roll, the former will deliver paste to the latter, means is provided for constantly removing this. For this purpose there is pivoted at 82- (Fig. 3), upon the adjacent wallof the casing-section 12, a scraper "85 for contact with the roll. As illustrated, the body of this scraper is angular, extending from the pivoted portion, which is approximatelyvertical, horizontally at and here furnishing a table upon. which the work-piecesmay rest in preparation for their advance to the applying roll and supporting member. At the edge of the scraper co-operates with and conforms to the periphery of the supporti ig roll, while at 88 this scraper is cut away to lit the flange 76, so it may be caused to remove the paste therefrom both sides and along its periphery. of the scraper has a portion 90 for engagement with the hub of the roll. A spring 92, attached to the under side of the scraper and to a relatively fixed point, as upon the casing, draws the engaging edge toward the roll, the movement in this direction being limited and controlled in extent by a screw 94 threaded through the wall of the body of the scraper above its pivotal poin and contacting with a boss 96 (Fig. 1) projecting from the casing. Co-operating with the exposed inner portion or hub of the brushbody and with the adjacent section of the shaft 1 at the side opposite he scraper 85 is a scraping member 98, urged by a spring 100 toward these portions of the brush and shaft. The paste removed by the scraper 98 will fall downwardly, in part upon the hub of the roll 72, where it will be acted upon by the portion 90 of the scraper 85. Depending upon the adjustment of the screw 94, the edges of this scraper 85 at 86 and 88 will approach more or less closely to the work-supporting surface of the roll and to the gage-disk 7 6. If the adjustment is such that the scraper is in contact with these, practically all the paste will be removed therefrom, so that none will be applied to the exterior of the counter. If, on the other hand, the spacing of the scraper from the roll is greater, some paste will be carried upon the roll-surface and gage, and will be received by the outside of the counter. All the paste removed from the hub of the brush and from the various portions of the roll 72 may enter the enlarged mouth 102 of a vertical conduit 10% extending along the casing beneath the work-engaging members, and at its lower end turning inwardly to deliver to the receptacle. The passage ofthis conduit 104 into the receptacle may be The inner extremity through a contracted'opening 106 in a cover 108 resting upon the upper edge of the receptacle-wall. This largely prevents the evaporation of the moisture from the paste, and since the excess is promptly removed from the work-engaging members, the tendency to deteriorate by drying is small.

At the opposite sideof the work-engaging members from the table 8% is a substantially alined table. 110, upon which the coated work-pieces may be received and'temporarily held for removal from the machine.

The operator, in using this apparatus, advances the counters .over the surface 84, so that the forward edge of one of the sides of the body-portion c enters between the applying surface of the brush and the supporting surface of the roll and with the flange a resting at its outer face against the gagedisk 76, while its inner face is in contact with the sides of the outer fibers of the brush. At this time the treadle 68 is depressed and the valve 58 open, so that the pump 38 delivers paste from the receptacle 36 through the pipe 28 in quantities determined by the adjustment of the valve 68. The paste thus supplied to the chamber in the interior of the brush-body emerges from the openings 26, and, passing between the fibers, covers the peripheral surface and is applied to the interior of the counter-portion 0, which is fed forward by the rotation of the brush and the roll 72. The length of the applying surface, as is shown most clearly in Fig. 2, is greater than the width of the counter-portion c. This, with the deflection of. the bristles at the inner extremity of the brush, because of their closer proximity to the supporting roll, wipes out and distributes the paste, away from the counter edge onto the supporting surface, from which it is removed by the scraper 85. Consequently, there is no tendency for an excess of paste to gather in a line along the counter edge, as would be the case were the brushfibers to terminate at or near it, or were the relation of the bristles such that a lay-er of paste, uniform with that upon the remainder of the counter-body, would be laid upon this edge. When the curved rear of the counter reaches the brush, the engagement therewith of this and the roll turns the counter, so that it is reversed in direction, and the opposite side is fed between the engaging members to receive the coating of paste. During this entire travel, the outer end of the brush is applying the paste to the inner face of the flange a, the outer face of which contacts with the gage 7 6 and holds the counter from outward displacement. ,Whether the I outer surface of the counter is coated is determined, as has already been pointed out,

by the distance between the edge of the scraper and the supporting roll and its gage-flange. If the operator leaves the ma .sides of said chine, the removal of the foot from the treadle causes the valve 58 to be closed-by its spring 62, whereupon the delivery of paste by the pump stops. v Having described my invention, what 1 claim as new and desire to secure by Letters Patent of the United States is:

1. In a molded-counter-pasting machine, rotatable members constructed and arranged to contact respectively with the inside and outside of a counter, and means for supply. ing paste to one of the members.

2. In a molded-counter-pasting machine, rotatable members constructed and arranged to contact respectively with the inside and outside of a counter, the member operating within the counter having a diameter ap proximatin the width between the opposite counter, and means for supplying paste to one of the members.

3. In a molded-counter-pasting machine, rotatable counter-engaging members, the contour of the opposed surfaces of the members generally corresponding to the form to. which a counter is molded, and means for supplying paste to one of the members. I

4. In a molcled-counterpasting machine, a paste-applying member, and a rotatable pressure member co-operating therewith, the longitudinal contour of the peripheries of said members generally corresponding to the transverse contour of the, body-portion of a counter.

5. In a molded-counter-pasting machine, rotatable counter-engaging members, the contour of the opposed surfaces of the members generally corresponding tothe form to which the engaged counter is molded but departing therefrom at one extremity, and means for supplying paste to one of the members.

6. In a molded-counter-pasting machine, rotatable counter-engaging members, the contour of the opposed surfaces of the members generally corresponding to the form to which the engaged counter is molded but approaching each other more closely than elsewhere at the portions which contact with the upper edge of the counter, and means for supplying paste to one of the members.

7. In a molded-counter-pasting machine, rotatable members co-operating respectively with the inside and outside of a counter,

means for supplying paste to one of the members, and gage means carried by the member outside the counter. I.

8. In a molded-counter-pasting machine, rotatable members co-operating respectively with the inside and outside of a counter, one of said members having an annular projection for contact with a surface of the counter, and means for supplying paste to one of the members- V 9. In a molded-counter-pasting machine, a paste-applying member, and a rotatable flange, movable members arranged to contact with opposite sides of the body-portion, one of said members having a gage-portion for contact with the counter-flange.

12. In a machine for pasting counters having an upper body-portion and bottomtlange, movable members arranged to contact with opposite sides of the body-portion, one of said members having a gage-portion for contact with the counter-flange and both i of said members extending therefrom beyond the edge opposite the flange ofthe counter operated upon.

13. In a molded-counter-pasting machine, a brush arranged to enter between the opposite sides of a counter, a pressure member for contact wit-h the exterior of the counter, and means for supplying paste to the brush.

1%. In a molded-counter-pasting machine, a. rotatable applying brush, and a countersupporting roll co-operating therewith, the supporting surface of the roll substantially conforming to the contour of the counter.

15. In a molded-counter-pasting machine, a rotatable applying brush, and a countersupporting roll co-operating therewith, the supporting surface of the roll substantially conforming to the contour of a counter and the fibers of the brush approaching more closely to the roll at the portion co-operating.

with the upper edge of the counter.-

16. In a molded-counter-pasting machine, a brush arranged to enter between the opposite sides of a counter, a pressure member for contact with the exterior of the counter, a flange situated at one extremity of the pressure member and extending over the end of the brush, and means for supplying paste to the brush.

17. In a molded-counter-pasting machine, a member arranged to rotate between oppo site sides of a counter, a co-operating member rotatable outside the counter, means for supplying paste to the first-mentioned memher, and a scraper co-operating with the other member.

18. In a counter-pasting machine, rotatable members for co-operation with the opposite sides of a counter, a gage rotatable with one of the members, means for supplying paste to one of the members, and a scraper co-operating with a rotatable member and associated gage.

19. In a counter-pasting machine, a rotatable b'rush, a roll co-operating therewith and having at one extremity a flange, means for supplying paste to the brush, and a scraper co-operating with the roll and flange.

20. In a counter-pasting machine, a rotatable brush having a supporting portion extending at one side, a co-operating roll situated below the brush and having agageportion, and scrapers co-operating with the supporting portion of the brush and with the roll and gageeportion.

21. In a pasting machine, a paste-applymember, means for delivering paste to the applying member, means for determining the delivery or non-delivery of paste, and independent means for controlling the quantity of paste delivered, both the deliverydetermining means and the controlling means being constructed and arranged for actuation by the operator.

22. In a pasting machine, a paste-applying member, a paste-conduit delivering thereto, means for controlling the flow through the conduit, connections to the controlling means arranged to be actuated by the operator when in operating position, and means for actuating the controlling means when the operator is out of operating position.

23. In a pasting machine, a paste-apply.-

ing member, means for moving said member.

to effect the application, a conduit delivering through the member, a continuously .Operating pump for supplying the member and in which the conduit terminates, a. valve included in the conduit and controlling the flow from the pump, means for holding the valve normally closed, and a treadle con-. nected to the valve.

24. In a pasting machine, a casing, a hollow paste-applying means projecting from one side of the casing, a paste-receptacle situated within the casing below the applving means, a pump for delivering paste from the receptacle through the interior of the applying means, and means for returning to the receptacle the excess of paste delivered to the applying means.

25. In a pasting machine, a casing, a brush projecting from one side of the casing, means for rotating the brush, a paste-receptacle situated within the casing below the brush, a pump immersed in the contents of the receptacle, a. conduit connecting the pump and interior of the brush, and a conduit arranged to receive the excess of paste from the brush and leading to the receptacle.

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

ERNEST E. SABIN.

Certificate of Correction.

Patent No. 1,634,519. Granted July 5, 1927, to ERNEST E. SABIN.

It is hereby certified that error appears in the printed specification of the abovenuinbered patent requiring correction as follows: Page 1, line 10, for the Word contour read counter, and that the said Letters Patent should be read With this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 8th day of November, A. D. 1927.

[SEAL] I M. J. MOORE,

Aatimg Commissioner of Patents.

Images