US2133372A

US2133372A - Heel-attaching machine

Info

Publication number: US2133372A
Application number: US143035A
Authority: US
Inventors: Joseph M Barton
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1937-05-17
Filing date: 1937-05-17
Publication date: 1938-10-18
Anticipated expiration: 1955-10-18

Description

Oct. 18, 1938. J BARTON 2,133,372

HEEL ATTACHING MACHINE Filed May 1'7, 1957 Patented Oct. 18, 1938 UNITED STATES PATENT OFFICE HEEL-ATTACHING MACHINE Application May 17, 1937, Serial No. 143,035

13 Claims.

My invention relates to machines for attaching heels to shoes, it concerning more particularly the means for presenting a heel-portion, as a top-lift, to a jacked shoe for attachment.

In heeling shoes, it is sometimes desired to use bases or top-lifts which have. been prebreasted, or brought to a condition at the breast-surfaces at which only a finishing operation is required after attachment... This is advantageous because it avoids the danger of cutting the outsole during the breasting or of exposing a depression in the soleadjacent to the heel after the breast-cut has been made,this depression being caused by the pressure appliedin the heeler. to a sole in temper. When thus operating upon prebreasted heels, it is not satisfactory to locate them intheir holders in the usual manner, by .contact of a fixed fork with therear surface in connection with an opposite, yieldable breast-bar. Differences in the amountspreviouslyfltaken from the breasts will prevent accurate registration of the top-lift and base, Gonsequently, it is desirable to locate the heel-portions, by contact with thebreast, and for thisv purpose, the breast-bar is commonly fixed upon its swing-plate or carrier, while the rear forkis yieldable;

When a jacked shoe, to which a heel-base has been nailed, is brought intoengagement with a top-lift inits holderfor the spanking operation, the breast-lines of the two heel-portions may be displaced from each other longitudinally of the shoe, evenwhen gaged .by the breast-bar. This tends to, defeat the purpose of the prebreasted heel. Furthenthe shoe may be turned slightly about the longitudinal axis of the jack, especially if a band-clamp.isnotemployed, so the breasts of the two heel-portions will be out .of registrationangularly about such axis. It is an object of my invention to correct these conditions. For this purpose, the heel-contacting member, as the breast-bar, which ,is employed to, determine the position of thetop-lift or other heel-portion, is arranged to move under the influence of the work, so it may thereby restore the, disturbed registration longitudinally of the shoe. The member may also be. provided with means to change the position of the work to'produce a further corrective action. As herein disclosed, the breast-bar of the top-lift-holder has a surface receiving contact of the work, as of the breast-edge or corner of an attached base, this surface being inclined outwardly from the opposite member furnished by the rearfork. The-forces acting and reacting between thebase'and'breast-bar-surface will be effective to position the bar and, with it, the toplift longitudinally of the shoe and, further, to turn the base with the shoe angularly, there being thus produced registration between the breasts of the base and the lift. The final relation is determined by a gaging surface upon the breastbar, in which the inclined surface terminates. The two work-contacting members of the holder are preferably both yieldable, as against the action of springs, the spring for the breast-bar being stronger. The yield of the rear member against the lighter spring facilitates the introduction of the heel-portion to the holder, while the yield of the breast-bar permits the registering action between the work-portions. As illustrated, theyield of the breast-bar is adjustably limited by a connection between it and the carrier consisting of a series of openings in one and a cooperating separable pin in the other, there being clearance between the pin and the opening which it occupies.

A particular embodiment of this invention is illustrated in the accompanying drawing,

Fig. 1 being a top plan view of my improved holding means for heel-portions;

Fig. 2, a vertical section showing a shoe with an attached base approaching the spanking position, and v Fig. 3, an enlarged sectional detail on the line IIIIII of Fig. 1.

The invention appears as organized for application to a heel-attaching machine such as that disclosed in Letters Patent of the United States No. 1,157,688, Glidden, October 26, 1915. Between a jack l0 and a die-block ll carried by a crosshead l2, a shoe S may be clamped for the basenailing and top-lift-spanking operations. The pin [3 of the jack enters the hole in the last L within the shoe. This support gives some freedom of movement of the shoe both angularly about the-axis of the jack and longitudinally of the shoe itself. A swing-plate or like carrier I4 is pivoted at IS on the crosshead for oscillation by connections l8 to present in operating position above the die-block either a base-holder b or a top-lift-holder t. With the holder b, this invention is not especially concerned. It is sufficient to say that it receives and locates a heelbase B, presenting it for attachment over the dieblock at the beginning of an operating cycle.

The top-lift-holder t has a rear fork 26 provided with a shank 28 guided for reciprocation upon the plate M in ways 30 in a cover-plate 32. Opposite the fork is a breast-bar 34, the shank 36 of which is movable in ways 3! in the plate 32. The end of the bar opposite its shank may be guided in ways upon the plate l4. At the upper edge of the breast-bar is a surface 38 inclined outwardly from the rear fork; that is, downwardly and inwardly toward a Vertical work-engaging surface 39 of the bar, in which it terminates. The fork 26 may be urged toward the breast-bar into its normal position by a spring 40, shown as of the torsion type and interposed between the angular end 4| of the shank 23 and a wall or abutment 42 rising from the plate M. The spring is retained in place by a rod 44 projecting from the wall 42. On the inner end of this rod is threaded a nut 46, with which the portion 4| of the fork-shank may contact to adjustably limit the movement of the fork under the influence of the spring 48. The breast-bar 34 is drawn toward the fork by a tension-spring 48, joining the shank 36 near its outer extremity to some one of a series of openings in the plate l4. By changing the point of attachment of the spring to the plate, the tension of this spring may be varied. The force which it exerts to hold the breast-bar against movement is greater than that which the spring 40 applies to the rear fork. This locates the bar in a definite normal position which adapts it to gage prebreasted heels. To limit the movement of the breast-bar, its shank has a series of openings 52, through any one of which may pass a headed pin 54 held in one of two pairs of alined openings 56, 55 in the

plates

14 and 32. The diameters of the openings 52 and the pin 54 are such that there is a substantial clearance between them. This allows the outer portion of the wall of one of the openings to be held against the pin by the spring 48, and the breast-bar to shift outwardly through the space given by the clearance. By choosing different combinations of the openings 52 and 56 to receive the pin 54, the breast-bar may be located in the position with relation to the nailing'mechanism most advantageous for the work in hand.

In using my improved top-lift-holder, the operator, by selection of the openings 52 and 56 through which the pin 54 passes and by the adjustment of the nut 46, locates the breast-bar 34 and the fork 26 in the proper relation for the size of a top-lift T to be spanked during the second half of an operating cycle upon the nails N by which a base B has been attached to a jacked shoe S at the beginning of the cycle. The toplift is placed in the holder 15 by forcing back the fork 26 by contact therewith of the rear of the lift and then allowing the spring 40 to carry the breast of the lift forward against the bar 34. Because of the strength of the spring 48, the position of the bar is not disturbed. With correct adjustments, the close of the nailing operation may find the breast of the attached heel in substantially the correct relation to the breast of the top-lift in the holder t. The operator may, however, have displaced the shoe with its base angularly about the axis of the jack H), or the back stop with which the shoe contacts may not retain it in the desired longitudinal relation. Such departures from the conditions which would cause registration between the breast of the top-lift and that of the prebreasted heel may be kept within limits such that the breast-edge of the descending base or one of the breast-corners will engage the inclined surface 38 of the bar. The reaction upon the base will produce a force which will urge the shoe and base rearwardly and turn them about the axis of the jack. Simultaneously, the breast-bar tends to yield under the applied force, so the top-lift will share in the registering action, it moving with the bar under the influence of the fork 26 actuated by its spring 40. Before the ends of the nails protruding from the base reach the top-lift, the breast-edge of the base will have arrived at the gaging surface 39. This determines accurately the coincidence of the breast-edges of the two heel-portions, so that no trimming operation upon them will be required.

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

1. In a heel-attaching machine, a movable shoe-support, a movable carrier co-operating therewith, and a holder for a heel-portion mounted upon the carrier and having opposite members for contact with the heel-portion, one of said members being arranged to move under the influence of the work on the movable support into registration with said work.

2. In a heel-attaching machine, a movable shoe-support, a movable carrier co-operating therewith, and a holder for a heel portion mounted upon the carrier and having opposite members for contact with the heel-portion, one of said members being arranged to move under the influence of the work on the movable support and being provided with means for contact with the work to change the position of said work.

3. In a heel-attaching machine, a movable carrier, and a holder for a heel-portion mount ed upon the carrier and having opposite members for contact with the heel-portion, one of the members being movable toward and from the other and said other member being arranged to move under the influence of the Work in the direction of such movement.

4. In a heel-attaching machine, a movable carrier, a holder for a heel-portion mounted upon the carrier and having opposite members relatively movable to contact with the heelportion and clamp it between them, and a spring interposed between each member and the carrier, one of the members being provided with means with which the work contacts to cause such member to yield.

5. In a heel-attaching machine, a movable carrier, a holder for a heel-portion mounted upon the carrier and having opposite members relatively movable to contact with the heel-portion and clamp it between them, and a spring interposed between each member and the carrier to urge said members toward each other, said springs acting upon the members with different degrees of force, the member acted upon by the stronger spring being provided with means with which the work contacts to cause such member to yield.

6. In a heel-attaching machine, a swing-plate, and a holder for a heel-portion mounted thereon and including a heel-fork and a breast-bar, said breast-bar being provided with a shank movable upon the plate, the work-contacting portion of the bar having a downwardly and inwardly inclined surface terminating in a work-gaging surface.

7. In a heel-attaching machine, a jack upon which a shoe having an attached heel-base may move, and a top-lift-holder having associated with it means for causing a relative movement of the base and top-lift toward registration with each other.

8. In a heel-attaching machine, a jack upon which a shoe having an attached heel-base may turn about the axis of the jack, and a top-liftholder having associated with it means for turning the shoe about said axis.

9. In a heel-attaching machine, a jack for a shoe having an attached heel-base, and a toplift-holder co-operating with the jack and including a yieldable breast-bar having an inclined surface arranged to receive contact of the heel-base.

10. In a heel-attaching machine, a jack for a shoe having an attached heel-base, and a toplift-holder co-operating with the jack and including a yieldable breast-bar having an inclined surface arranged to receive contact of the heelbase, said inclined surface terminating in a vertical base-gaging surface.

11. The combination with a carrier provided with ways, of a holder for a heel-portion comprising a rear contact member and a breastcontact member movable in the ways, said breast-contact member having an inclined surface arranged to receive contact of a portion of the work, and a spring acting upon each member to urge it toward the other.

12. The combination with a carrier, of a holder for a heel-portion comprising a rear contact member mounted upon the carrier, a breast-contact member movable upon the carrier, and a spring exerting its force to urge the breast-contact member toward the rear contact member, the carrier and breast-contact member being provided with an opening and a pin passing through the opening with clearance, such connection limiting the movement of the breastcontact member under the influence of the spring and allowing movement of said member under the influence of the work.

13. The combination with a carrier, of a holder for a heel-portion comprising a rear contact member mounted upon the carrier, a breas contact member movable upon the carrier, and a spring exerting its force to urge the breast-contact member toward the rear contact member, the breast member being provided with a series of openings and the carrier with a pin which may be positioned in any one of the openings with clearance to permit movement of the breast member upon the carrier.

JOSEPH M. BARTON.