US2259575A - Shoe bottom cementing machine - Google Patents

Description

Oct. 21, 1941. w. L. M KENZIE SHOE BOTTOM CEMENTING MACHINE Filed June 25, 9 0 2 Sheehs-Sheet l Oct. 21, 1941.

w MacKE NZIE 2,259,575 SHOE BOTTOM CEMENTING MACHINE Filed June 25, 1940 2 Sheets-Sheet 2 Patented Oct. 21, 1941 SHOE BOTTOM CEMENTING MACHINE Wilbur L. MacKenzie, Beverly, Mass, assignor to United Shoe Machinery Corporation, Borough of Flemington, 'N. J., a corporation of New Jersey Application June 25, 1940, Serial No. 342,284

' (Ci. 12 so) 7 Claims.

This invention relates to machines for treating shoe bottoms and is herein illustrated as embodied in a machine for applying a coating of cement to the overlasted margin upon the bottom of a shoe in which the sole is to be secured to the shoe chiefly by means of adhesive, and of the type shown in Letters Patent of the United States No. 2,100,341, granted November 30, 1937, upon my application.

the operator is assisted in causing the traversing movement of the shoe by a driven feed roll which engagesthe side of the shoe closely adjacent to the nozzle. It will be understood, however, that the relation between the bottom of the shoe and the side of the shoe varies radically between the forepart portion, where the side is more nearly normal to the bottom of the shoe, and certain other portions, notably those in the shank of the shoe where the relation changes from the rather fiat condition found at the inside of the shank to a radically different condition at the outside of the shank. This means that the relation of the feed roll to the side of the nozzle must change as the periphery of the sho bottom is traversed.

One way of accommodating these differences in the relation of the feed roll and the nozzle is illustrated in the above-mentioned patent in which a carrier for the driven feed roll is supported so that it is laterally yieldable against the tension of a spring.

With this in mind, an object of the invention is to provid a simple and less expensive arrangement by means of which the same result may be secured. As illustrated herein, and in accordance with features of the invention, the feed roll carrier is held in a position which is fixed with respect to the nozzle when the machine is in operation, and the changing relation of the side of the shoe is accommodated by providing a feed roll which is in nature quite like the balloon tire of an automobile; in other words, this feed roll is readily distortable and is capable of assuming various shapes which will permit it to provide firm feeding contact with the side of the shoe and, at the same time, to yield sufliciently so that the bottom of the shoe may be kept substantially horizontal in its desired relation to the nozzle during th whole traverse of the shoe bottom.

These and other features will best be understood from a consideration of the following description, taken in connection with the accompanying drawings in which Fig. 1 shows in side elevation, with a cover removed, the essential features of a bottom cementing machine including my novel construction;

Fig. 2 is a detail view on a much larger scale, showing the coaction of the feed roll with the shank portion of the shoe; and

Fig. 3 is a similar view, illustrating the coaction of the feed roll with the toe end of the shoe.

As in the patented machine, a nozzle i0 is supported upon a bracket l2 which is clamped to a rod 14 held by a set screw [6 in an arm I8. This arm 18. is pivoted upon a pin 20, and the nozzle may be raised slightly against the tension of a spring 22 when a shoe I00 (Fig. 3) is raised into engagement with the nozzle. The illustrated nozzle is constructed as shown in Letters Patent of the United States No. 2,177,666, granted October 31. 1939, upon the application of MacKenzie et al., and comprises a series of individually yieldable delivery members 24, these members being supplied through tubes 26 from a pipe 28' (Fig. 1) through which cement is delivered under pressure by means of a pump 30 from a receptacle 32. A valve 34 to control the flow of cement is arranged to be turned by an arm 36 joined to a treadle-operated lever 38 by means of a link 40. The connection between a treadle (not shown) and this lever comprises a treadle rod 42 and a link 44 having a lost-motion connection 46 for a purpos which will be later explained. When the treadle is released, the valve is'returned to closed position 4 by means of a spring.

'It is convenient to arrange for the withdrawal of a feed roll 50 from the immediate neighborhood of the nozzle 10, when no work is being presented to the machine, in order that there may be no soiling of the feed roll; and to this end, the feed roll is secured to a shaft 52 which is journaled in a carrier 54 pivoted upon a drive shaft 56 to which the shaft 52 isconnected by a worm and worm wheel 58. Movement of th feed roll carrier 54 from the inoperative position illustrated in Fig. 1 to a position in which the feed roll engages the side of the shoe, as in Figs. 2 and 3, is effected by a bell-crank lever 60 pivoted upon the frame 10 and one end of said lever is connected to the upper end of the treadle rod and the other end is joined to the carrier 54 by a link 62. When the treadle is depressed, the feed roll is moved laterally to the left to a predetermined position dependent upon the engagement of an again to the heel breast line.

and a plate 74 held in position by means of a i screw 16. Both the hub of the shaft 52 and the plate 14 are grooved at 18 and 80 to receive ribs upon the casing 12 and hold the latter against pulling away from the shaft. This plate 14 is in a plane intersecting the side of a shoe close to the nozzle, flated roll might be employed, a simpler and better construction is that illustrated herein, in which the casing 12 surrounds an annulus 82 of sponge rubber or the like. It will be noted that .the portion of the feed roll 50 which is above the plane of the clamp plate 14 is less than that portion which is belowit, and thisarrangement permitsof the radical distortion of at least the portion of the-roll below this plane, such as is .shown'in Figs 2 and 3 when the feed roll is in engagement with the inside shank portion s or the outside shank portion S" of the side of a :shoe I00.

In using the machine, the operator will first depress the treadle attached to the rod 42 thereby opening the valve 34 and moving the feed roll carrier to its operating position, as shown in Figs. 2 and 3, whereupon the shoe is next presented in such a position that the nozzle l rests upon the overlasted margin M of the bottom of the shoe at-a point near the heel breast line, and the shoe isthen given a traversing movement with respect to the nozzle to cause the latter to coat progressively the shank portion of the shoe, the forepart and thetoe end T, the shank portion on the other side of the shoe, and back Since the carrier 54 for the feed roll 50 occupies a predetermined position in the machineduring the presentation of ashoe, the operator learns readily to determine largely by feeling, how hard the shoe must be pressed against the distortable feed roll 50 to cause the nozzleto apply a band of cement at .just the required distance from the peripheral edge of the shoe, whichis needed for the particular styleof shoe under consideration.

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

11 In amachine for'treating progressively the marginal portion of the bottom of a shoe, a shoetreating tool arranged to coact with the bottom of an inverted shoe, a feed roll journaled for rotation around an axis fixed with respect to the treating means, said feed roll comprising a soft annular member capable of yielding to accommodate all the variations in angular relation between the bottom ofthe shoe and an adjacent side portion of the shoe.

2. In a machine for applying cement to the overlasted margin upon the bottom of a shoe, cement-applying means arranged to coact with Although it is evident that an inthe bottom of an inverted shoe, and driven feeding means journaled for rotation around an axis fixed with respect to the applying means, said feeding means comprising a soft roll capable of yielding to accommodate all the variations in angular relation between the bottom of the shoe and an adjacent side portion of the shoe.

3. In a bottom-cementing machine, means to apply cement to the overlasted margin upon the bottom of a shoe comprising a nozzle, and means for assisting the operator in traversing the work with respect to the nozzle comprising a feed roll for engagement with a side of the shoe, said roll being driven upon an axis held against lateral movement, and being yieldable in a direction lat- I erally of the nozzle to accommodate the changing relation between the side of the shoe and an adjacent portion of the bottom of the shoe.

4. In a bottom-cementing machine, a vertically yieldable support, a nozzle mounted on said support, means for supplying cement to said nozzle,

a feed roll for engaging the side of the shoe adjacent to the nozzle, a carrier in which said feed roll, is journaled, means for moving said carrier to transferthe feed roll from an idle position to a predetermined fixed position closely adjacent to the nozzle, said "feed roll comprising a soft, yieldable periphery capable of distortion sufiiicent to care for the changing relation between the bottom of the shoe and a closely adjacent side portion of the shoe. 7

5. In a bottom-cementing machine, a nozzle for applying cementto the overlasted margin upon the bottom of a shoe, said nozzle being yieldable heightwise of the shoe, a carrier occupying a predetermined position laterally of the work-contacting end of the nozzle, a driven feed roll journaled in said carrier and arranged to carry the shoe along beneath the nozzle whenthe shoe is presented thereto by an operator, said feed roll being supported in a plane intersecting the side .of the shoe close to the nozzle and having a dis- :tortable portion on the side of said plane away from the nozzle which will maintain firm contact with the side of the shoe both in the forepart and in theshank portions of the shoe.

"(jjIn a bottom-cementing machine, means to apply cement to the overlasted margin upon the bottom of an inverted shoe, a driven feed roll ljournaled for rotation around an axis fixed with respect to the applying means, said feed roll comprising an annular tire-like casing substantially filled with a readily compressible material of the nature of sponge rubber whereby it is capable of yielding to accommodate the changing relation between the side of the shoe and the adjacent portion of the bottom of the shoe.

7. In a machine for treating the peripheral portion of a shoe, a feed roll adapted to engage the side of the shoe and driven to carry the shoe past the operating point, said feed roll having a supporting central web, and an annular ring joined to said web and providing a soft yieldable periphery capable of easy distortion, said annular portion being offset with respect to the web so that a majority of the work-engaging periphery lies at one side of the web.

WILBUR L. MACKENZIE.

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