US2063167A

US2063167A - Lasting tool

Info

Publication number: US2063167A
Application number: US5047A
Authority: US
Inventors: Jacob S Kamborian
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1935-02-05
Filing date: 1935-02-05
Publication date: 1936-12-08
Anticipated expiration: 1953-12-08

Description

Dec. 8, 1936. J. s. KAMBO'RIAN LASTING TOOL Filed Feb. 5, 1935 2 Sheets-Sheet l Dec. 8, 1936. J, KAMBORIAN 2,063,167

LASTING TOOL Filed Feb. 5, 1955 2 Sheets-Sheet 2 Patented Dec. 8, 1936 UNITED STATS PATENT OFFICE LASTING TOOL Application February 5, 1935, Serial No. 5,047

12 Claims.

This invention relates to a tool particularly suitable for pulling shoe uppers over lasts.

In the manufacture of shoes the assembled uppers are sometimes pulled over the lasts by means of a lasting tool which comprises hand pincers having a hammer head disposed between the handle or grip and the jaws, the hammer head constituting an abutment whereby the tool is fulcrumed on the shoe bottom when either side of the upper is being pulled over the last. After having pulled over one side of the upper, it is necessary for the operator either to shift his position or the position of the last so as to be able conveniently to work on the other side of the upper.

The principal object of the present invention is to provide a tool which is so constructed that the operator may, from one position and without changing the position of the last, quickly pull over and secure both sides of the shoe upper, thereby avoiding the inconvenience and lost motion encountered in the use of lasting tools of the aforementioned character.

Another object of the invention is to provide a lasting tool or implement of the link character which is of simple design and of strong and durable construction, which is efficient and reliable to use, and which may be manufactured and sold at a relatively low cost.

Further objects will be apparent from a consideration of the following description and accompanying drawings, wherein,

Fig. 1 is a side elevation of my improved lasting tool, the jaws being shown in closed position;

Fig. 2 is a side elevation, with parts broken away and shown in section, of the tool shown in Fig. 1, the jaws being shown in open position; and

Figs. 3 and 4 are perspective views illustrating the manner of using my improved tool for pulling a shoe upper over the last.

The particular embodiment chosen for the purpose of illustration comprises in part, pincers of conventional construction, including the usual pair of elongate members or shanks l and 2 pivotally connected between their ends by a pin or pivot 3, the operating ends of these members having downwardly inclined or depending portions, as the pincers are normally positioned in use, which provide cooperating jaws t and 5 and their opposite ends extending a substantial distance beyond their pivotal connection 3 to provide the usual handle portions 6 by means of which the jaws 4 and 5 may be opened and closed.

The shank l is provided with a pair of verti: cally extending openings 8 and 9 between the jaw 5 and the pivot 3 and the shank 2 is provided with a recess or opening between the pivot 3 and its handleportion 6, as shown in Fig. 2.

A relatively fixed jaw I2 is rigidly secured to the shank I by means of an integral upstanding boss l3 which tightly fits within the opening 9, the jaw having a shoulder portion l4 which squarely seats against the under surface of the shankl, as shown in Fig. 2. A relatively movable jaw EE having its upper end disposed in'the opening 8, is pivotally connected to the shank I by a pin 1 6 which extends transversely through the opening 3 from one side of the shank to the other. of the end of the jaw 15 are such as to permit the jaw to swing toward and away from the fixed jaw l2, as shown in Figs. 1 and 2. It will thus be seen that the jaws l2 and I are in a location The size of the opening 8 and the shape between the jaws 4 and 5 and the handle portion 6 of the shank 2 and also between the jaws 4 and 5 and the pivotal connection 3, and that the jaws l2 and I5 extend in the same general direction transversely of the hande portion 6 as the jaws 4 and 5.

The jaws l2 and 15 are provided with slots or openings ll and I8, respectively, and a link 20 extends through the opening I! with opposite ends disposed in the openings l0 and I8, respectively. A pin 22 pivotally connects one end of the link 28 to the movable jaw l5 and in like manner a pin 23,, connects the other end of the link to the shank 2, the construction and arrangement oi the parts being such that movement of the handle 6 of the shank 2 to open or close the jaws 4 and 5, acting through the link 20, effects a corresponding movement of the jaw Hi.

If desired, the shank i may be provided with a. threaded opening between the pivot 3 and the jaw l, and a hammer head 26 or the like may be secured thereto by means of a boss 21 or the like member having a screw-threaded engagement within the opening 25.

The tool, as thus constructed, is particularly suitable for use in pulling a shoe upper 30 over a last and insole 3|, as illustrated in Figs. 3 and 4, and when thus used one of the pairs of jaws i and 5 is operative to pull one side or section of the upper 30 while the other pair of jaws l2 and i5 serves as an abutment whereby the tool is fulcrumed on the shoe bottom to' swing in the usual manner, as indicated by the arrow in Fig.

3. In a similar manner the jaws 4 and 5 serve as an abutment whereby the tool is fulcrumed for swinging movement in the opposite direction to operate the jaws l2 and I5, as indicated by the arrow in Fig. 4, when the opposite side of the upper 30 is being pulled over the last.

It will be noted that in pulling an upper over a last with a tool constructed in accordance with the present invention, the operation may be quickly and conveniently performed and does not require the operator to change his position or the position of the last. Furthermore, after having pulled over any portion of the upper, the operator may tack it to the last with the same tool in the usual manner, merely by rotating the tool so as to bring the head 26 into position and then driving the tack. Lasting pincers constructed in accordance with the present invention are particularly adapted for use with side lasting ma- Chinesof the type shown in my Patent No. 1,979,- 000, granted October 30, 1934, as both sides of the shoe may be drafted equally well with the right handand hence there is no necessity of the operator using his left hand to draft in the right Side of the shoe.

While I have shown and described one desirable embodiment of the invention it is to be understood that this disclosure is for the purpose of illustration, and that various changes in shape, proportion and arrangement of parts, as well as the substitution of equivalent elements for those herein shown and described, may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

Iclaim: 1 a

1. Alasting tool or the like implement comprisi g a pair of relatively movable jaws, a handie for opening and closing said jaws, a second pair of relatively movable jaws disposed between the first pair of jaws and said handle and extending in the same general direction transversely of said handleas said first pair of jaws, and connectionsbetween the second'pairof jaws and said handle comprising a link, extending from the handle to one of the jaws by means of which said Second pair of jaws may be opened and closed by said handle. 7

2. A lasting tool or the like implement comprising pincers having a pair of jaws at one end and a handle at the other end for opening and closing said jaws, a second pair of jaws mounted for relative swinging movements and disposed between said first pair of jaws and said handle, both pairs of jaws being arranged in similarly depending relation to said handle when the handle is in a horizontal position, and connections between said second pair of jaws and handle by means of. which said second pair of jaws may be opened and closed by said handle.

3. A lasting tool or the like implement comprising a pair of elongate members pivotally connected between their ends, corresponding ends of Said members having depending portions providing cooperating relatively movable jaws and the opposite ends of said members providing handles in angular relation to said depending portions by means of which said jaws may beopened and closed, anda second pair of relatively movable jaws disposed between the first pair and the pivotal connection between said members and depending similarly to said first pair, said second pair of jaws being constructed and arranged to be'opened and closed simultaneously with said first pair of jaws.

4. A lasting tool or the like implement comprising a pair of elongate members pivotally connected between their ends, corresponding ends of said members having depending portions providing cooperating relatively movable jaws and the opposite ends of said members providing handles by means of which said jaws may be opened and closed, a second pair of jaws including a relatively fixed jaw secured to one of said members between its pivotal connection and the first pair of jaws and a relatively movable jaw pivotally joined to said one of said members, and means connecting said relatively movable jaw to the other of said members on the opposite side I of said pivotal connection from said jaws.

5. A lasting tool or the like implement comprising a pair of elongate members pivotally connected between their ends, corresponding ends of said members having depending portions providing cooperating relatively movable jaws and the opposite ends of said members providing handles by means of which said jaws may be opened and closed, a second pair of jaws including a relatively fixed jaw secured to one of said members between its pivotal connection and the first pair of jaws, said relatively fixed jaw having an opening extending therethrough, a relatively movable jaw pivotally connected to said one of said members between said relatively fixed jaw and said first pair of jaws, and a link extending through said opening and pivotally connected to said relatively movable jaw and the other of. said mem-v bers.

6. A lasting tool or the like implement comprising two pairs of relatively movable jaws and a handle for opening and closing said jaws, both pairs of jaws extending in the same general direction transversely of said handle and one of said pairs of jaws being disposed nearer said handle than the other of said pairs.

ing pivotally connected members having two pairs of jaws mounted for relative swinging movements and a handle portion for opening and closing said jaws, one of said pairs of jaws being disposed between the pivotal connection and the other pair of. jaws and extending in the same general direction as the other pair.

8. A lasting tool or the like implement comprising pivotally connected members having two pairs of jaws mounted for relative swinging movements and a handle portion for opening and closing said jaws, one of said pairs of jaws being disposed between the pivotal connection and the other pair of jaws, and a hammer head secured to one of said members on the opposite side from both said pairs of jaws.

9. A lasting tool or the like implement comprising a pair of elongate members pivotally connected between their ends, corresponding ends of said members having depending portions providing cooperating relatively movable jaws and the opposite ends of said members providing handles by means of. which said jaws may be opened and closed, a second pair of jaws including a relatively fixed jaw secured to one of said members between its pivotal connection and the first pair of jaws, said relatively fixed jaw having an opening extending therethrough, a relatively movable jaw pivotally connected to said one of said members between said relatively fixed jaw and said first pair of jaws, a link extending through said opening and pivotally connected to said relatively movable jaw and the other of said members, and a hammer head secured to said other of said members on the opposite side thereof from said jaws and between said pivotal connection and the first pair of jaws.

10. A lasting tool for pulling an upper over a last comprising two pairs of upper-gripping jaws and a pair of handles for closing and operating said jaws, both said pairs of jaws being arranged to extend toward a shoe for use alternatively to grip and pull the upper when the tool is positioned with its handles extending widthwise of the shoe and each pair of jaws being arranged to provide an abutment whereby the tool is fulcrumed on the shoe bottom for swinging movement to operate the other pair to pull the upper.

11. A lasting tool for pulling an upper over a last comprising two pairs of upper-gripping jaws and a pair of handles relatively movable to close both pairs of jaws, one of said pairs of jaws being arranged to pull an upper at one side of a shoe by downward swinging movement of said handles while the tool is supported on the bottom of the shoe with its handles extending both in the same direction widthwise of the shoe, and the other pair of jaws being arranged to pull the upper at the other side of the shoe by upward swinging movement of the handles while the tool is supported on the bottom of the shoe with its handles extending in substantially the same direction as in pulling the upper at the first side of the shoe.

12. A lasting tool for pulling an upper over a last comprising two members pivotally connected together between their ends and provided withhandles at one side of their pivotal connection and with a pair of upper-gripping jaws extending in a direction transverse to said handles at the other side of said connection, a second pair of. upper-gripping jaws supported on one of said members at the same side of said pivotal connection as the first pair of jaws and extending in the same general direction as said first pair, one of said second pair of jaws being fixed on the member which supports it and the other being pivoted to said member, and a link connection between said pivoted jaw and one of said members for closing the second pair of jaws simultaneously with the closing of the first pair by the relative movement of the members.

JACOB S. KAMBORIAN.