US2332024A

US2332024A - Heel-holding mechanism

Info

Publication number: US2332024A
Application number: US428247A
Authority: US
Inventors: John F Standish
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1942-01-26
Filing date: 1942-01-26
Publication date: 1943-10-19
Anticipated expiration: 1960-10-19

Description

Oct. 19, 1943. J. F. STANDISH 2 ,332,624

HEEL-HOLDING MECHANISM Filed Jan. 28, 1942 of the shoe.

Patented Oct; 19, 1943 HEEL-HOLDING MECHANISM v John F. Standish, Winthrop, Mass, assignor to United Shoe Machinery Corporation, Fleming,- ton, N. .L, a corporation of New Jersey Application January 26, 1942, Serial No. 428,247

14' Claims.

My invention relates to mechanism by which heels may be retained in place during the application of pressure to-hold them for the reception of various operations, a particularly useful application of the invention being in connection withheel-attaching machines.

In apparatus employed to secure a heel to a shoe by fastenings driven from within through the heel-seat into an applied heel, the *work is customarily clamped upon its supporting jackto resistdisplacement by the'inserting force, by a pressure-head or holddown mechanism. In this "mechanism, there is an abutment for engagement with the tread-surface of the heel, and a second abutment member, commonly in the form of a fork, for engagement with the curved rear --of the heel. It is desired that, when the fastenings are inserted, the breast-edge of the heel shall be at a definite point, this usually being determined by the breast-cut in the o'utsole against which the heel-breast-edge should fit closely. This positioning action is most commonly left to the operator, who must also locate the heel in the correct transverse relation upon the heel-seat. The present invention relieves the 1f operator'of thought and effort'in connection with the exact positioning of the heel longitudinally I To attain thisend, I combine with a jack, or other support for a shoe,'andan applied heel, a carrier, the support and carrier being relatively movable toward" and from .each

other for the application of the pressure to the supported heel, and an abutment member mounted to move upon the carrier for engagement with the rear of the heel, the relative movementfirst establishing contact between the abutment member and the heel, and then, only after such contact, urging the member forward along the shoebottom. In an illustrated embodiment of the invention, as applied to a heel-attaching machine, there co-operates with the support a movable pressure-head, upon whichtwo' slides are oppositely movable. One of theseyslides carries a heel-tread-abutment, and upon the other a rear, fork is pivoted to move freely in. the operation of the machine. This fork is so located that,'in its movement in contactwith the curved rear of the heel, itwill be retained frictionally Without slipping, and, as pressure is applied to thework, will exert a force having a vertical and a horizontal component. The first of these urges the heel against the heel-seat, while the second thrusts it toward the breast-cut, or other chosen point upon the shoe-bottom. 'Ijo prop- 'erly present the fork or rear abutment to the piece 'This firmly supports the work for the reception heel, andto limit the extent of movement which it imparts to said heel, it is movable between opposite stops, which may bevariable, both re.- spectively andtogether with theabutment. This is accomplished in the present instance by mounting the abutment and stops together upon a terminal-portion of the carrier-slide, the'stops themselves being in the form of screws threaded through the terminal-portion. I

In certain heel-attaching machines, as those in which a shoe on a last is operated upon while supported upon a spindle," the lateral curvature of the cones of different lasts, and the opposite curvature of right and left last-cones, causes the heel-seat of the spindled shoe and the heelthereon to occupy difierent lateral positions. My invention compensates for this, and permits the fork to accommodate itself to varying locations of the heel, by mounting said fork upon the holddown or pressure-head for free lateral movement. This, with the pivoted fork above described, is longitudinally of the pivotal axis.

In the accompanying drawing,

Fig. 1 shows a particular embodiment of my invention in broken side elevation, with the pressure-head in its normal position;

Fig. 2 is a detail inside elevation, With the heel-abutments in initial Contact with the heel;

Fig. 3, a similar view after clamping pressure has been applied; and

Fig. '4, a rear elevation of, the rear abutment.

I have chosen to illustrate the invention as applied to such'a heel-attaching machine, as is disclosed in the application filed in the United States Patent Oflice on December 29, 1941, in. the

name of Francis L. Brandt, and bearing the Serial No. 424,740. 'Upon a frame F, a worksupporting jack J is mounted, this having a tubular spindle It projectingzupwardly and for- Wardly, and arranged to receive a passage through the cone of a last: L within a shoe S, to

whicha heel H' is to be attached. A nut l2 threaded upon the spindle Hi, and a nut :4 surrounding a second spindle l6 infront'of the first spindle, may be elevated-to force a last-bed- [8 against the crown of the last-cone.

of clamping pressure. A nail N, to be inserted through the heel-seat .of the-shoe into theheel, is carried upon the upper extremity of a driver 20, movable in the spindle It and actuated by a plunger 22 reciprocating vertically in the frame. To hold the work upon the last-bed-pieceagainst upward displacement under the force of. the

driver, a holddown P is provided, this hayingja head 24 bridged between side-rods 26 reciprocating vertically in the frame. In a casing 28, adjustable horizontally upon the head, front and rear carrier-

slides

30 and 32 are respectively movable. As is customary in this compensating arrangement, the slides are connected to reciprocate oppositely by a pinion 34, rotatable in the casing in mesh with rack-teeth upon the ad- Jacent edges'of the slides. The front slide 30 has mounted upon its lower extremity a plate or abutment 36, for engagement with the tread.- surface of the heel on the spindled shoe. The rear slide 32 carries a fork R, with which this invention is particularly concerned. Thetwo slides are biased, as is usual, so the tread-abut,

ment 30 is normally lowered.

Considering now the arrangement of the fork R, the slide 32 has at its lower extremity a terminal 40, which is essentially a portion of it. This terminal fits between the divided sides 42, u of the slide, and is s u d fo cr ent l adjustment by a -.e de ew c n ct n 4, Depending from the terminal are spaced lugs 45, in alined portions of which a spindle 48 is free to turn. This spindle furnishes a pivot for the fork R, which has a body 59 fixed to the spindle :by a SBtrSCIGW 52. Theonposed faces of the arms of the fork are padded with yieldable material 56, which prevents the arms from slipping upon the curved surface of the heel and marring the covering. The fork-body has a rear projection 58 and a forward projection 5!), each presenting an upper surface for contact with a stop, these being furnished, respectively, by

screws

62 and 64 threaded vertically into the terminal 40 i of theslide 32. The projection 51; rests normally against the screw 62. This may result from the weight of the fork, but is preferably effected by a. pair of tension-springs .66, 65, joining the projection to the rear of the slide-terminal.

For the particular form of heel H being attached, the general relation of the work and its two stops is established, as desired, by the adjustment of the terminal 40 upon its slide and fixed by the connectionjfi. The screw 62 is so positioned that, when .the fork is lowered in engagement with the rear of the heel, the points of contact will move downwardly and forwardly.

When the holddown P applies pressure to the work, in preparation for the insertion of the heel-attaching nail N by the driver 20, the plate 36 first engages the tread-surface of the heel. Then, through the gearing connecting the slides and '32, the fork R is lowered against the rear of the :heel, as appears in Fig. 2. The relation which has been established between the curved rear of the heel and the path through which the heel-engaging portion of the fork may move, is such that said fork will maintain its engagement without slipping and thus rubbing over the heelcovering. As the fork descends, it will exert upon the heel a force having a vertical and a horizontal component. The former acts with the treadabutment, after the pressure applied by the two slides is balanced, to hold the heel down upon the heel-seat of a shoe. The horizontal component, before the vertical component has reached a maximum, thrusts the heel forward, so thebreast-edge is against the breast-cut c in the outsole of the shoe. The extent of theaction in this direction may be limited by the contact of the fork-projection) with the screw 64. Both components of the clamping force maintain the heel against rearwarddisplacement. Itis thus flrmly held and in the chosen forward position.

In heel-attaching machines of the character illustrated, the spindle 10 within the passage in the last L holds the work against bodily lateral movement. The cones of lasts have different lateral curvatures, and the lasts of a pair may curve oppositely. The location of the work at the rear will thus differ. In Fig. 4, it will be noted that there is substantial clearance between the inner sides of the lugs 46 and the opposed faces of the fork-body 50. The spindle 48 is thus free to shift longitudinally through the bores in the lugs. As a consequence of this, when one or the other of the fork-arms engages the side of the heel which the operator is holding upon the heel-seat of the shoe, the fork, floating in its mounting, will adjust itself laterally and settle in place to apply uniform pressure to both sides of the heel.

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

l. Heel-holding mechanism, comprising a support for "a shoe and applied heel, a carrier, the support and carrier being relatively movable for the application of pressure to the supported heel, and an abutment member mounted to move upon the carrier for engagement with the rear of the heel, the relative movement first establishing contact between the abutment member and the heel and then only after uch contact has been estabport for a shoe and applied heel, a carrier, the

support and carrier being relatively movable for the application of pressure to the supported heel, an abutment member mounted to move upon the carrier for engagement with the rear of the heel, a stop against which the abutment member is normally held, the relative movement first establishing contact between the abutment member and the heel and then urging said abutment member away from the stop, and a stop by which the forward movement of the abutment member is limited.

4. Heel-holding mechanism, comprising a support for a shoe and applied heel, a carrier, the support and carrier being relatively movable for the application of pressure to the supported heel, an abutment member free to move upon the carrier longitudinally of the shoe-bottom in engagement with the rear of the heel, opposite stops for limiting the movement of the abutment member, and a spring by which the abutment member in held normally against one of the stops.

5. Heel-holding mechanism, comprising a sup port for a shoe and applied heel, a carrier, the support and carrier being relatively movable for the application of pressure to the supported heel, an abutment member mounted to move upon the carrier for engagement with the rear of the heel, the relative movement first establishing contact between the abutment member and the heel and after such contact urging said abutment member forward along the shoe-bottom, opposite stops for limiting the movement of the abutment memher, and means arranged to vary the position of the abutment member and stops together longitudinally of the shoe-bottom.

6. Heel-holding mechanism, comprising a support for a shoe and applied heel, a carrier, the support and carrier being relatively movable for the application of pressure to the supported heel, said carrier being provided with a terminal-portion variable in position longitudinally of the shoe-bottom, an abutment member mounted to move upon the terminal-portion upon engagement with the rear of the heel, and opposite stops for the abutment member carried by the terminal-portion.

7. In a heel-attaching machine, a support for a shoe and applied heel, a pressure-head movable toward and from the support, two slides movable oppositely in the pressure-head, a heel-treadabutment carried by one slide, and a rear fork pivoted upon the other slide and free to move thereon longitudinally of the shoe-bottom during the application of clamping pressure to a heel.

8. In a heel-attaching machine, a support for a shoe and applied heel, a pressure-head movable toward and from the support, two slides movable I oppositely in the pressure-head, a heel-treadabutment carried by one slide, and a fork pivoted upon the other slide for engagement with the curved rear of the heel, the fork in its pivotal movement upon said other slide in contact with the heel exerting a force having a downward component toward the heel-seat of the shoe and a forward component longitudinally of said shoe.

9. In a heel-attaching machine, a support for a shoe and applied heel, a pressure-head movable toward and from the support, two slides movable oppositely in the pressure-head, a heel-treadabutment carried by one slide, a rear fork pivoted upon the other slide, and opposite stops limiting the oscillation of the fork.

10. In a heel-attaching machine, a support for a shoe and applied heel, a pressure-head movable toward and from the support, two slides movable oppositely in the pressure-head, a heel-treadabutment carried by one slide, a rear fork pivoted upon the other slide, and stop-screws threaded through the slide to receive contact with the fork in its opposite movement about the pivot.

11. In a heel-attaching machine, a support for a shoe and applied heel, a pressure-head movable toward and from the support, two slides movable oppositely in the pressure-head, a heel-treadabutment' carried by one slide, a rear fork pivoted upon the other slide, rear and forward stops limiting the oscillation of the fork, and a spring interposed between the slide and the fork and urging said fork into normal contact with the rear stop.

12. In a heel-attaching machine, a support for a shoe and applied heel, a pressure-head movable toward and from the support, two slides movable oppositely in the pressure-head, one of said slides being provided with a terminal-portion variable in position from front to rear of the machine, a heel-tread-abutment carried by one slide, a

. rear fork pivoted upon the terminal-portion of the other slide, and opposite stop-screws for the fork threaded through the terminal-portion.

13. In a'heel-attaching machine, a jack having a spindle arranged to receive a passage in the cone of the last within a shoe, and a heel-holddown provided with a fork for engagement with the rear of a heel applied to the heel-seat of the spindled shoe, said fork being free to move laterally upon the holddown to accommodate itself to different positions of the heel-seat of the shoe.

14. In a heel-attaching machine, a jack having a spindle arranged to receive a passage in the cone of the last within a shoe, and a heel-holddown comprising a carrier and a heel-fork pivoted upon the carrier and free to move longitudinally of the pivotal axis upon engagement of the fork with a heel applied to the heel-seat of a spindled shoe.

JOHN F. STANDISH.