US1232914A - Jack for shoes. - Google Patents

Description

0.1 HAiG & S. A. LEWIS.

JACK FOR SHOES= APPLECATIOH FILED :umzz. i916.

Patented. July 10, 1917'.

Atty s.

w om mm vH Y T a T I 0 Samuel A. Lewis by M3mLM/az NIT TATS FFTE.

OTTAR T. HAIG, OF BEACHMONT, AND SAMUEL A. LEWIS, OF SOUTH BRAINTREE, MASSACHUSETTS.

JACK FOB SHOES.

Application filed June 2, 1916.

To all whom it may concern:

Be it known that we, OTTAR T. HAIG and SAMUEL A. LEWIS, citizens of the United States, and residents of Beachmont, county of Suffolk, and South Braintree, county of Norfolk, State of Massachusetts, have invented an Improvement in Jacks for Shoes, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to improvements in jacks for supporting lasts for boots and shoes and the object thereof is to provide a relatively simple and inexpensive device which will support the last with the shoe thereupon during ironing or other finishing operations.

Another object of the invention is to provide a jack of the class described with means for supporting smoothly the upper of a high top shoe.

Another object of the invention is to provide a novel means for securing the last to the end of the jack.

Other objects and features of the invention will more fully appear from the following description and accompanying drawings and will be pointed out in the annexed claims.

In the drawings:

Figure 1 is a side elevation of a preferred embodiment of my invention showing the support for the upper in section,

Fig. 2 is a vertical sectional view of the end of the jack post showing the expansible jaws thereof expanded within the socket of a last, with a screw for expanding the same,

Fig. 3 is a vertical sectional view on lines 3-3 Fig. 1, showing the pawl and ratchet mechanism for actuating the screw for expanding said jaws,

Fig. 4 is an enlarged vertical sectional view of the upper support and jack on lines 1, 4, Fig. 1,

Fig. 5 is a section on lines 5, 5, Fig. 1.

The apparatus employed in shoe factories and shops for supporting a shoe during the ironing and dressing operations comprises a form in the shape of a last adapted to stretch the shoe and to support it smoothly while the upper is being treated, such jacks being ordinarily secured to a fixed support and adapted to be rotated thereon in order Specification of Letters Patent.

Patented July 111 191%.

Serial No. 101,386.

to permit access to the different portions of the shoe.

The preferred embodiment of the invention disclosed herein comprises a stand 1 adapted to be atlixed to a suitable table preferably provided with drawers and closed receptacles for the liquid used in the treatment of the shoe, said stand having upwardly extending ears forming hearings or supports for the shaft 2 on which are pivotally mounted two hollow arms 3, 3 forming sockets for jack posts & having means at their outer ends to engage sockets in the last.

In the treatment of shoes it is desirable that means may be provided whereby one shoe will be drying while another shoe is being treated, means are therefore provided whereby one of the jacks will be moved into horizontal position to permit drying of the shoe placed upon it while the other jack is in a substantially vertical position while being operated upon. In order to facilitate the work means are provided whereby when one jack is moved from vertical position to horizontal position the other jack will be moved in the opposite direction.

This is accomplished in the present embodiment of the invention by providing the arms 3 and 3 respectively with beveled gears 5 and 5 both of said gears engaging a pinion 6 rotatably mounted upon a suitable stud extending upwardly from said stand.

It is desirable that the jack be supported resiliently when in its horizontal or working position and in the present embodiment such means comprises a plunger 7 slidably mounted in a boss 8 on the stand 1, the plunger 7 being supported by a spring 9 to engage the jack when the latter is in horizontal position.

The jack post 4 is rotatably mounted within the arm 3 and is secured from longitudinal movement therein by a set screw 10 extending through the wall of the arm into an annular groove 11 in the jack post. A set screw 12 having a winged head may be provided for locking the j ack post against rotation in any desired direction.

The end of each jack post is provided with yieldable jaws 13 adapted to enter the socket in a last. These jaws may conveniently be formed by splitting a cylindrical extension of a sleeve 14 adapted to fitrthe reduced end of the jack post 4 and secured thereto by set screws 15. The set screws 15 may be provided with cylindrical portions 16' for purposes hereinafter to'be described.

The jaws 13 preferably are provided with.

internal screw threads 17 to cooperate with corresponding threads 18 upon the tapered end of a shaft 19 which is rotatably mounted in a bearing extending longitudinally of the jack post.

Suitable means may be provided for rotating the shaft 19. As illustrated herein a toothed member or gear 20 keyed to said shaft is located in a recess in the jack post 4 adjacent to the end of the arm 3. A handle 23 having a cylindrical portion 24 is rotatably mounted upon the jack post and preferably abuts the end of the arm 3, and a pin slidably mounted in the lever 23 is held in engagement with the gear by suitable resilient means so that as the lever is oscillated the gear 20 and shaft 19 may be rotated to cause the actuation of the expanding screw 18. v 1

In order to permit sufficient oscillation of the lever a portion of the jack post is recessed to provide a slot 25 within which the pawl 22 may be oscillated. The pawl 22 is forced into engagement with the toothed member by a spring 26 abutting at one end against the end of the pawl and at the other against the base of a screw 27 seated in the upper end of the lever. A preferred means for removing the pawl from engagement with the toothed member consists of a lever 28 pivoted upon a stud 29 extending transversely through the handle, the lever 28 extending at one end through a slot 30 in the pawl and at the other end being engaged by a plunger 31 slidably mounted in the head of the lever and extending above the end of the same, said plunger 31 being limited in its movement by a pin 32 extending through a slot 33 therein.

In the operation of the device the jack is brought into horizontal position and the socket in the last thrust over the jaws 13 at the end of the jack. The lever 23 is then oscillated, the pawl carried by said lever engaging and rotating the toothed member 20 and with it the shaft 19 thereby advancing the screw 18 and separating the jaws 13 until they engage firmly the walls of the socket in the last. In order that the shaft 19 may be rotated readily in either direction to advance or retract the screw the teeth upon the toothed member are made symmetrical and the pawl is raised from engagement with said teeth by pressure of the thumb of the operator upon the end of the plunger 31.

By the construction above described an easily operable means is provided for securing the last to the jack which means will fit the socket in any last andfsecurelthe same 'means for expanding said members sufiiciently to maintain the upper in smooth condition.

In the preferred embodiment of the in: vention disclosed herein said means'coinprises two oppositely disposed curved members 35 and 36, having their adjacent {edges telescopically arranged, said members being connected by pin and slot connections The retaining screws 15 forthe jaw members may conveniently be utilized to secure the members 35, 36 to thelast, the shank 16 of said screws passing through slots 37 in the members 35, 36. The shanks of the screws 15 are provided with thin crowned heads adapted to lie closely against the-outer'member 36 without making an objectionable bulge in the shoe upper. The Opposite ends'of the members 35 and 36 are secured togetherand to the jack by a pin 38 extending through suitable slots 39 in said members, the pins 38 being provided with similarly thin crowned heads. The members 35, 36 may be expanded by any suitable spring mechanism but preferably separate springs are provided toexpand the endsso that the members 35, 36 will more accurately conform to the shape of the upper. Aronvenient means for accomplishing this purposefconsists of two U-shaped springs 40 and 4l-coiled at their centers about studs42 extending oppositely from the sides of the jack .post 4,

ing the inner walls of the members 35 and 36.

By the construction above described the ankle portion of the form is of sufficient flexibility to enablethe top of the shoe to be manipulated quite as if it were upon the wearer. V a V In view of the flaring formof the upper, means are provided to engage the topmost eyelets toikeep the upper stretched properly upon its support. This device conveniently may be inthe form of a pair of hooks 43 or preferably a wire having a'central coil with its ends extended to form hooks adapt= ed to engage the eyelets, the coil of said. device being attached to one end of a spring 44 the opposite end of which .is secured :to a rod 45 adjustablymounted in a boss 46 on a collar 47 attached to the jack post 4. As illustrated herein the collar 47 may conveniently serve to secure the lever 23 upon the endofthe arm3. f U 7 It will be understood that the embodiment of the invention disclosed herein is illustrative and not restrictive and that the inven- W 105 the free ends of the springs slidably engagtion may be incorporated in other forms within the meaning and scope of the following claims.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:

1. A jack for lasts comprising a stand, a jack post carried thereby having yieldable jaws adapted to enter a socket in the last and means including a screw for expanding said jaws into engagement with the walls of said socket.

2. A jack for lasts comprising a stand, a jack post carried thereby having at its end internally threaded expansible jaws adapted to enter a socket in the last, a shaft rotatably mounted in said ack post having a tapered screw engaging the threads of said expansible jaws and means for rotating said shaft to expand said jaws.

3. A jack for lasts comprising a stand, a jack post carried thereby having at its end internally threaded expansible jaws adapted to enter a socket in the last, a shaft rotatably mounted in said jack post having a tapered screw engaging the threads of said expansible jaws, a toothed member on the shaft of said screw and a lever having means detachably engaging said member for rotating said shaft relatively to said jack post to actuate said aws.

l. A jack for lasts comprising a stand, a jack post carried thereby having at its end internally threaded expansible aws adapted to enter a socket in the last, a shaft rotatably mounted in said jack post having a tapered screw engaging the threads of said expansible jaws, an annular toothed member fixed upon said shaft, a lever pivotally mounted upon said jack post, a pin slidably mounted in said lever engaging said toothed member and means for actuating said pin.

5. A jack for lasts comprising a stand, a jack post carried thereby having at its end internally threaded expansible jaws adapted to enter a socket in the last, a shaft rotatably mounted in said jack post having a tapered screw engaging the threads of said expansible jaws, an annular toothed member fixed upon said shaft, a lever pivotally mounted upon said jack post having a pin slidably mounted therein, a spring normally holding said pin in engagement with said toothed member and means operable by a plunger extending through the head of said lever for moving said pin against the action of said spring.

6. A jack for shoe lasts comprising a stand, a jack post pivotally mounted thereupon, means for securing a last to said post Copies of this patent may be obtained for five cents each, by addressing the and an expansible form mounted upon said jack post to support the uppers of the shoe having resilient means normally tending to maintain said form in expanded position.

7. A jack for shoe lasts comprising a stand, a jack post carried thereby, means for securing a last to said jack post, an expansible form for the upper mounted upon said jack post comprising suitably curved members having their adjacent edges telescopically arranged and resilient means secured to said jack post for expanding said members whereby the upper of the shoe will be smoothly stretched.

8. A jack for shoe lasts comprising a stand, a jack post carried thereby, means for securing a last to said jack post, an expansible form for the upper mounted upon said jack post, comprising suitably curved members having their'adjacent edges tele scopically arranged, said members being provided adjacent their edges with slots to receive pins extending laterally from the jack post and springs for independently expanding the ends of said members.

9. A jack for shoe lasts comprising a stand, a jack post carried thereby, means for securing a last to said jack post, an expansible form for the upper mounted upon said jack post comprising suitably curved members having their adjacent edges telescopically arranged, said members being provided adjacent their edges with slots to receive pins extending laterally from the jack post and U-shaped springs having their central portions coiled about studs upon the jack post and extending in opposite directions to engage frictionally the inner surface of the upper supporting members.

10. A device of the class described comprising a stand, a pair of jack posts pivotally mounted upon said stand and gearing having members connected to the respective jack posts for causing one of said jack posts to be raised when the other is lowered to working position.

11. A device of the class described comprising a stand, a pair of jack posts pivotally mounted upon said stand to move in vertical planes and provided with beveled gears and a beveled gear rotatably mounted upon said stand engaging the beveled gears of said jack posts, said gears being so arranged that when one of said jack posts is raised the other will be lowered to working position.

In testimony whereof, we have signed our names to this specification.

OTTAR T. HAIG. SAMUEL A. LEWVIS.

Commissioner of Patents.

Washington, D. G.

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