US2091383A

US2091383A - Lasting tool

Info

Publication number: US2091383A
Application number: US109808A
Authority: US
Inventors: Frank R Thresh
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1936-11-09
Filing date: 1936-11-09
Publication date: 1937-08-31
Anticipated expiration: 1954-08-31

Description

F. R. THRESH Aug. 31, 1937.

LASTING TOOL Filed Nov. 9, 1936 Patented Aug. 31, 1937 UNITED STATES ATENT OFFIQE LASTING TOOL Frank R. Thresh, Beverly, Mass, assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application November 9, 1936, Serial No. 109,808

11 Claims.

This invention relates to portable lasting tools, and more particularly to hand pincers for use in pulling uppers over'lasts.

Hand pincers are frequently used, for example,

( to assist in the lasting of shoes in bed-lasting and are swung downwardly by the operator to cause the jaws to pull the upper. An object of the present invention is to provide a construction adapted fo-r convenient use in case, for example, a lasting machine may be provided with a hold down or other part so formed or arranged over the shoe bottom as to interfere with the use of pincers of the above-mentioned character. A further object is to provide a construction which may be used with equal facility to pull an upper either at the side of a shoe which may face the operators working position or at the opposite side of the shoe.

With'the above and other objects in view, the tool herein shown is so constructed as to pull the upper while extending in a general direction heightwise of the shoe,.the upper-gripping jaws being operated both to grip the upper and to pull it heightwise of the shoe by relative movement of a pair'of' handles. More particularly, the construction shown comprises a member formed to rest on the'bottomof the shoe and also to serve as a guide 'along which the jaws are movable as a unit heightwise of the shoe to. pull the upper, and mechanism which by relative movement of the handles first eifects "relative closing movement of the jaws :and' then imparts to the jaws their pulling movement. Preferably, as shown, the above-mentioned member is. arranged in such relation to the jaws as to serve as a holddown for M0 the margin of an insole or other shoe bottom part during" the pulling of the'upper.

Thenovel features of the invention will now be more particularly described with reference to the accompanying drawing and thereafter pointed out in the claims.

In the drawing,

Fig. 1 shows in elevation a tool in which-the invention is embodied. and illustrates the relation of the tool to the toe-end portion of a shoe ,50 in a lasting machine prior to the gripping and 55 being broken away.

The novel tool is adapted for use to assist in the lasting of a shoe in any bed-lasting machine of well-known type, as Well as for otherlasting purposes, and the drawing shows a shoe as supported on a toe rest 2 of such a machine in proper relation to toe-lasting wipers 4 which, it will be understood, are used to wipe the upper heightwise of the last and then to wipe its margininwardly over an insole on'the last. The bottom of the shoe is engaged as .usual by a holddown 6 which, howevenis herein shown as so constructed and arranged as to interfere with the convenient use of hand-lasting pincers of the character commonly used heretofore. Forpullingthe upper in different locations about thetoe, asis usually desirable before the wipers l wipe the margin of the upper inwardly over the insole, the invention provides a. tool which includes .a member 8 having a depending shank portion Hi the lower end of which is enlarged-to provide a foot l2 arranged to rest on the margin of the insole near the edge of the shoe bottom to hold'the insole in this location close to the bottom of the last. The shank I0 is formed to serve-as a guide for a block M on which is secured an uppergripping'jaw l6, andmounted to swing about a pin IE on this block is a cooperating jaw 2!]. Both jaws are accordingly movable as a unit in directions substantially perpendicular to the shoe bottom along the guide ill. At its upper end thejaw is bifurcated to straddle the block I4, as shown in Fig. 2, and is provided with a pair of arms'ZZ which extend respectively along opposite sides of the block in directions transverse to the path of pulling movement of the jaws. Pivotally connected to the arms 22 are the lower ends of a pair of links 23 the upper ends of which are pivotally' connected to a pair of levers 26 mounted at opposite sides of the member 8 to swing about a pin 28 on this member. The. two levers 26 are provided with gear sectorsSt! engaged by other gear sectors 32 formed on the lower bifurcated end of a handle 34 which is mounted to swing about a pin 36 on the member 8. Cooperating with the'han-dle 34-is another upwardly extending handle 38 formedintegral with the member 8. A spring 46) between these two handles maintains the handle 34 normally in the position indicated in Fig. l with the block l4 at-the lower limit of its movement in engagement with the foot l2 of the shank Ill. A spring 42 the opposite ends of which are mounted in sockets formed respectively'in the member 8 and the block i4 assists in holding the block at the lower limit of its movement, this spring being held in alinement with the two sockets by means of a rod 44 having an enlarged head 46 seated in the socket in the block M.

It will be understood that in using the tool the operator grasps the two

handles

34 and 38 with one hand and positions it, for example, as illustrated in Fig. l with the foot l2 resting on the margin of the insole and the margin of the upper between the two jaws. By pressure of his hand on the handles 3% and 33 the operator then swings the handle 34 toward the other handle against the resistance of the spring Ml. As the handle 34 starts to move it swings the two levers 26 upwardly and these levers act through the links 24 to swing the jaw 29 into position to grip the margin of the upper against the jaw IS. The spring 42 insures that the two jaws will remain in their lowermost positions until the upper is firmly gripped by the jaws. The upward pull exerted by the links 24 on the arms 22 in response to further movement of the handle 3d then causes both jaws to move as a unit upwardly along the shank ill against the resistance of the spring 42 to pull the upper heightwise of the last. While thus pulling the upper the operator controls the wipers 3 in the usual manner, pressing them inwardly against the upper at the edge of the insole. After pulling the upper in one location the operator releases it and may then pull it in the same manner in one or more other'locations while controlling the upper at or near the edge of the insole by the wipers.

It will thus be seen that in the operation of the illustrated tool both the gripping of the upper by the jaws and the movement of the jaws to pull the upper are effected by the swinging of the handle 34 toward the handle 38, the tool as a whole being maintained in substantially perpendicular relation to the shoe bottom so that the holddown 5 interferes in no way with the operation thereof. It will also be evident that the tool may be used with equal facility to pull the upper at a side of the shoe which faces the operators working position or to pull it at the opposite side of the shoe or in any other location.

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

1. A portable lasting tool for pulling an upper manually over a last comprising a pair of relatively movable handles, a pair of upper-gripping jaws, and mechanism for effecting relative movement of said jaws to grip the margin of the upper in response to relative movement of said handles and for thereafter moving the jaws heightwise of the last to pull the upper in response to further' relative movement of said handles.

2. A portable lasting tool for pulling an upper manually over a last comprising a pair of relatively movable handles, a pair of upper-gripping jaws, and mechanism for efiecting relative closing movement of said jaws to grip the margin of the upper by relative movement of said handles, the jaws being movable by said mechanism heightwise of the last to pull the upper in response to resistance of the upper to further relative closing movement of the jaws.

3. A portable lasting tool for pulling an upper manually over a last comprising a pair of relatively movable handles, a pair of upper-gripping jaws to pull the upper by further relative movement of said handles.

4. A portable lasting tool for pulling an upper manually over a last comprising a pair of uppergripping jaws for pulling the upper, a pair of relatively movable handles arranged in such relation to said jaws as to extend generally heightwise of the last in the pulling of the upper, and mechanism for efiecting relative movement of said jaws to grip the margin of the upper by relative movement of said handles and for thereafter moving the jaws heightwise of the last to pull the upper by further relative movement of said handles.

5. A portable lasting tool for pulling an upper manually over a last comprising a pair of relatively movable handles, a pair of upper-gripping jaws mounted to move as a unit relatively to said handles to pull the upper, and lever-and-link connections between one of said handles and one of the jaws for effectingrelative closing movement of the jaws to grip the margin of the upper and for thereafter moving the jaws to pull the upper.

6. A portable lasting tool for pulling an upper manually over a last comprising a pair of uppergripping jaws, means formed to serve as a guide along which said jaws are movable as a unit to pull the upper, and a handle for efiecting relative closing movement of said jaws and for moving the jaws along said guide to pull the upper.

7. A portable lasting tool for pulling a shoe upper manually over a last comprising a pair of upper-gripping jaws, a member formed to rest on the bottom of the shoe and also to serve as a guide along which said jaws are movable as a unit to pull the upper, a handle mounted to swing relatively to said member, and lever-and-link connections between said handle and one of the jaws for effecting relative closing movement of the jaws and for thereafter moving the jaws along said guide to pull the upper.

8. A portable lasting tool for pulling a shoe upper manually over a last comprising a pair of upper-gripping jaws, a member formed to rest on the bottom of the shoe to serve as a holddown for the margin of an insole and also formed to serve as a guide along which said jaws are movable as a unit to pull the upper, said member having a handle in fixed relation thereto, another handle movably mounted on said member, and connections between said movable handle and the jaws for effecting relative movement of the jaws to grip the margin of the upper and for moving the jaws along said guide to pullthe upper.

9. A portable lasting tool for pulling a shoe upper manually over a last comprising a pair of upper-gripping jaws, a member formed to rest on the bottom of the shoe and also to serve as a guide along which said jaws are movable as a unit in a direction substantially perpendicular to the shoe bottom to pull the upper, a pair of handles arranged to extend generally heightwise of the shoe in the pulling of the upper, one of said handles being fixed relatively to said member and the other movable relatively to said member, and connections between said movable handle and one of the jaws for effecting relative closing movement of the jaws and for thereafter moving the jaws along said guide to pull the upper.

10. A portable lasting tool for pulling a shoe upper manually over a last comprising a pair of upper-gripping jaws, a member formed to rest on the bottom of the shoe and also to serve as a guide along which said jaws are movable as a unit heightwise of the shoe to pull the upper, one of said jaws being mounted to swing toward and from the other jaw and having an arm extending in angular relation to the path of pulling movement of the jaws, a link connected. to said arm, a lever connected to said link and mounted to swing in directions heightwise of the shoe, and a movable handle connected to said lever for operating said swinging jaw to grip the upper and for moving both jaws along said guide to pull the upper.

11. A portable lasting tool for pulling a shoe upper manually over a last comprising a pair of upper-gripping jaws, a member formed to rest on the bottom of the shoe and also to serve as a guide along which said jaws are movable as a unit heightwise of the shoe to pull the upper, one of said jaws being mounted to swing toward and from the other jaw and having an arm extending in angular relation to the path of pulling movement of the jaws, manually operated mechanism connected to said arm to cause the swinging jaw to grip the upper and to cause the jaws to move along said guide to pull the upper, and a spring arranged. to resist movement of the jaws along said guide to insure the gripping of the upper prior to such movement of the jaws.

R. THRESH.