US2095196A - Wood heel attaching apparatus - Google Patents

Description

A. O. PAQUETTE 2 Sheets-Sheet 1 Filed March 12, 1937 Oct. 5, 1937. A. o. PAQUETTE WOOD HEEL ATTACHING APPARATUS Filed March 12, 1 937 2 Sheets-Sheet 2 J'rzuen 702';

Patented Oct. 5, 1937 UNITED STATES PATENT OFFICE WOOD HEEL ATTACHING APPARATUS Application March 12, 1937, Serial No. 130,471

7 Claims.

This invention relates to, means employed in connection with the attachment of wood heels, which are preliminary set and secured in position on the shoe, while on the last, by means of 5. an adhesive, and are held in position by a clamping means until the adhesive sets, after which the last is removed and the heel is permanently secured by inside nailing. Prior to my invention various forms of clampinsmeans for holding the heel in position until the adhesive sets have been employed, and while many of them are suficiently effective, they are objectionable for various reasons, in that the heels are often not correctly positioned on the shoe, or pressed against the heel seat with sufficient force to close all joints properly and are not held firmly against the heel set until the adhesive sets. i The objects of my invention are toprovide an improved form of clamping means in which the shoe ,on' thelast will beheld in such a position that the heel may be quickly positioned correctly and while thusheld may be quickly pressed against the heel seat with sufficient force to close all joints, which force is under the direct control of the operator, and will be fully retained :for any length of time which may be necessary, and will be thus held in a position to permit other finishing work to be performed on the shoe, such as cementing the tongue, which is cut from the sole, to the heel breast and ironing the shank, ready removalof the shoe from the clamping means being permitted after the adhesive sets.

I accomplish these objects by providing a form of clamp which is adapted to hold the shoe last in an inverted position while iremovably supported on one member of a pressing device, so thatthe heel may be correctly positioned, the other member of said clamping device being adapted to be forced by said pressing device into pressing engagement with the heel while thus positioned and to be automatically held many position to' which it is-forced, so that theclamp-may then beremoved from the pressing device and laid aside until the adhesive sets,- or other work may be performed on the shoe while the adhesive is setting. For amorecomplete disclosure of my invention, reference is now made to the following specification, in connection with the accompanying drawings' in which: V

Fig. l is a side elevation of the'complete apparatus, showingthe parts in clamping position. ;,,Figs.,2, 3, and4 are detail views of a locking mechanism which is employed in connection with themovable. member of the-clamp;

Fig. 5 is a view similar to Fig. 1, showing the parts in initial position.

Figs. 6 and 7 are views of the clamp separately.

Fig. 8 is a similar view showing the clampin clamping position.

Figs. 9 and 10 aredet-ail sectional and end views of one of the clamping members.

As shown in the drawings a pressing device is provided which is adapted to be mounted on a bench, and comprises a vertically disposed rod 12. which is reciprocally mounted in a sleeve l4 fixed on the bench, said rod having a horizontally disposed arm IS fixed on the upper end thereof and having a spring I 8 interposed between said sleeve and arm, which normally acts to hold the rod in' raised position. A link 20 is connected to said arm and to a foot treadle 22, by means of which the arm and rod maybe forced downward against the action of the spring l8, a pin 24 working in a slot 26 in the sleeve acting to prevent swinging movement of the arm. A pressing member consisting of a vertically disposed rod 23 is reciprocals ly mounted in the end of arm 16, and has a head 39 on its lower end, a spring 32 being inter posed between said head and arm which is adapted to yield when upward pressure is applied to said head- A stop pin 34 is provided in the upper end of rod 28 to limitits downward movement.

, A series of clamping devices are provided, one of which is shown, and which comprises a base member 36, from which a curved arm 38 extends and Said arm has a. head portion 40, in which a rod 42 is reciprocally mounted in line with the base member. A spring 44 is disposed on rod 42 between the head portion and a stop pin 46, 1 so that the spring norm-ally acts to hold the rod in the raised position of Fig. 5.

A head 48, shown in detail in Figs. 9 and '10, is pivotally mounted on the lower end of rod '42 and has a leather face 50, secured'thereto, said face having'a surface portion 50' which is in- 'clined' slightly upward from the horizontal and extends to a shoulder '50. Said rod 42 has a series of ratchet teeth 52 on its front side, and a double toothed pawl '54," having an ope-rating handle 5513s mounted on the head portion '40 at the front side thereof in position tobe pressed into-engagement with said teeth, by a spring '56, so that when rod 42 is pressed downward to' any position against the action of spring 44, it wil-lbe locked by the pawl against retraction in any position to which it is forced. 7

-A fixed support 58 is meunted on the bench directly beneath the'rod 28-a1id has its top" side inclined--'downward=slightly from front to rear.

The base member 36 has a pin 60 fixed therein which extends both above and beneath the same, the top portion being adapted to enter the jack post hole of a last and the bottom portion thereof to enter a slot 62 in the support 58. V

A stop screw 64 is also provided in the base member 36 in the rear of the pin 60 and in position to provide a rest for the rear end of a last, so that, by raising or lowering the screw, the inclination of the last, when placed in position on the base member, may be varied.

In practice a clamp 38 is placed in position on the support 58, as shown in Fig. 5, and a last, with a shoe thereon, is placed in position on the base member 36. A heel is then set in correct position on the heel seat, to which a suitable adhesive has been applied. The treadle is then depressed, causing the lower end of rod 28 to engage the top end of rod 42, and forcing the latter downward, so that the head 48 is in sufficiently close proximity to the top lift of the heel to enable the operator to determine whether the last is set in the correct position for a heel of the particular pitch which has been placed on the shoe. Adjustment of the screw 64 may then be necessary, so that, when the head 48 is forced into engagement with the top lift, the rear edge thereof will be set against the shoulder 50" and the inclined face 50 will be uniformly pressed against the top surface of the heel, so that when the rod 42 is pressed firmly against the heel, the base of the heel will be pressed against the heel seat uniformly at all points.

When the operator has determined that the last is correctly positioned, sufiicient pressure is applied through the treadle to force the heel firmly against its seat and to close all joints between the heel and the heel seat, as shown in Fig. 1. As the rod 42 is forced down, it will be locked against retraction by the pawl 54, which is provided with two teeth arranged at slightly different positions with relation to the ratchet teeth, so that when the pressure on the treadle is removed, the rod 42 will not be retracted to any appreciable extent. The force with which the heel is pressed against the heel seat is practically entirely under the control of the operator, the pressure being applied gradually and transmitted through the spring 32, which will be of suflicient strength, so that ordinarily the coils will not be pressed together. If the operator finds that the pressure has not been correctly applied, he merely unlocks the clamp by pressing against the handle 55 which withdraws the pawl from engagement with the teeth, so that readjustments may be made.

After the heel has been securely clamped in the correct position, the pressure on the treadle is removed, so that the spring l8 lifts the pressing means out of engagement with the clamp, which is then removed with the shoe clamped therein, as shown in Fig. 8, and laid aside until the adhesive sets.

Another clamp will then be placed in the pressing means and the operation above described will be repeated.

After a clamp has been removed from' the pressing means and before the shoe has been removed therefrom, the tongue which has been split from the outer sole may be cemented to the heel breast and the shank of the shoe may be ironed. The length of time which a shoe should be left in a clamp will vary somewhat and depend largely in the character of adhesive which is employed,

i. e. whether it is quick setting or not. It is, however, ordinarily desirable to retain the heel under pressure for a sufficient time to cause the heel seat to be permanently shaped to conform to the heel, so that when the pressure is removed no joints will open.

To remove the shoe from the clamp, it will obviously only be necessary to strike the lever 55 a sharp blow, so that the pawl will be disengaged from the teeth.

The above-described arrangement enables the heels to be quickly and accurately attached in correct position and possesses various advantages over previously employed methods.

I claim:

1. An apparatus for clamping a Wood heel on the heel seat of a shoe comprising a pressing device having a fixed and a movable member, a clamping device having a base member adapted to support a last and to be supported on said fixed member, a clamping member mounted on said base member and. movable towards and. from the same, said clamping member having a top lift engaging face next the base member and an oppositely disposed face arranged for engagement by said movable member to force said clamping member into engagement with a heel supported on the base member, and means on said clamping device for automatically locking said clamping member against retraction when forced towards said base member.

2. An apparatus for clamping a wood heel on the heel seat of a shoe comprising a pressing device having a fixed and a movable member, a clamping device having a base member adapted to support a last and to be supported on said fixed member, an arm extending from said base member and having a clamping member there on arranged for movement toward and from said base member, and a locking device on said arm arranged to lock said clamping member automatically against retraction when it is advanced towards said base member, said clamping member being arranged for engagement by said movable member to force the same towards said base member.

3. An apparatus for the purpose described comprising a pressing device having a fixed and a movable member, a clamping device having a base member adapted to support a last and to be removably supported on said fixed member, an arm extending from said base member and having a clamping member at the end thereof arranged for movement towards and from said base member and having a face arranged for engagement by said movable member, means on said clamping member arranged for engagement with a heel supported on a last mounted on said base member, and a locking device on said arm arranged automatically to lock said clamping member against retraction when it is advanced towards said base member.

4. A device for clamping a wood heel on a shoe comprising a base member adapted to support a, last, an arm extending therefrom, a clamping member reciprocally movable in said arm in line with said base member and having a top lift engaging face at its end next the base member and a face-at its opposite end arranged to be engaged to move the same into clamping engagement with a heel supported on said base member, and means to lock said member to said arm in the positions of clamping engagement thereof.

5. A device for clamping a wood heel on a shoe comprising a base member adapted to support a last, and having a rigid arm extending therefrom in fixed relation, a clamping member arranged for movement in said arm towards and cally to lock said clamping device against retraction when it is advanced towards the base member.

6. A device for clamping a wood heel on a shoe comprising a base member adapted to support a last and having a rigid arm extending therefrom in fixed relation, an elongated clamping member reciprocally movable in said arm towards and from said base member, said clamping member having a top lift engagingface at its end next the base member and having a face at its opposite end arranged for external engagement to force the same towards the base member, and a locking device on said arm arranged automatically to lock said clamping member against retraction when forced towards said base member.

'7. A device for clamping a wood heel on a shoe, comprising a base member adapted to support a last thereon in .a predetermined position, a clamping member supported by said base member and reciprocally movable towards and from the same, said clamping member having a top lift engaging face at its end next the base member ALBERT O. PAQUE'I'TE.

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