US1106360A

US1106360A - Pincers.

Info

Publication number: US1106360A
Application number: US67423212A
Authority: US
Inventors: Matthias Brock
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1912-01-30
Filing date: 1912-01-30
Publication date: 1914-08-11
Anticipated expiration: 1931-08-11

Description

M. BROGK.

FINGERS.

APPLICATION FILED JAN.30, 1912.

1, 1 O6, 360, Patented Aug. 11, 1914.

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MAT'IHIAS BROOK, or ROXBURY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, or PATERSON, NEW JERSEY, A CORPORATION on NEW JERSEY.

Specification of Letters Patent.

7 rIEcEEs.

Patented Aug. 11, 1911.

- ing description, in connection with the ac time of the operator.

companying drawingsQis a specification, like reference characters on the drawings indieating like parts in the several figures.

This invention relates to lasting pincers employed in the manufacture of boots and shoes and more particularly to hand lasting pincers for drawing the upper over the in-' sole edge at the toe portion of the shoe preliminary to fasteningthe same to the insole. In lasting shoes upon machines commonly known as the bed lasters it. is often found that as the toe embracing wipers rub the upper material up about the toe of an inverted last there is apt to be localization of the fullness of the upper in the form of small wrinkles which are diflicult to eliminate by the wipers alone. The operator usually employs the ordinary hand lasting pincer to pull and twist the upper in such a manner as to work out the wrinkles which form, but this method requires considerable One object of the presentinvention is to provide a pair of lasting pincers with means so constructed that when the jaws seize the upper at the toe of the shoe they effect a pulling or gathering of the upper widthwise of the jaws and from overa large area of the toe portion in such a manner as to eliminate the wrinkles. Preferably also the amount of lateral pulling or gathering of the jaws is greatest at the edge of the upper anddecreases toward the end of the jaws.

With this object in view a feature of this invention consists in pincers having j awe that gather the upper widthwise of the jaws as the pincers are closed to seize the upper, and preferably that gather the upper automatically and progressively from the tips of the jaws toward the edge of the seized stock.

A further feature of the invention is found in the illustrated embodiment in which a gathering device having a movement additional to that of the jaws is associated with the pincer jaws. To thisend the jaws are verticallyrecessed between their lateral sides and a gathering device is shown as pivotally connected with one jaw in its recess into which it retreats when the jaws are opened and from which it is projected into the recess of the other jaw, carrying the stock with it into the latter recess and thereby producing a pull or gathering effect on the stock widthwise of the jaws. The gathering device is shown as arranged to be operated automatically by the closing of the jaws but the broader aspects of the invention are not limited to operating it in this way. The gathering device is shown as a thin plate pivoted to the lower jaw into which it swings by gravity when free to do so and having a tail piece which engages the lower face of the upper jaw memher and by which the gatherer is rocked when the jaws are closed. The recess in the upper jaw is wide enough to allow the gatherer to carry the stock into it. The gatherer is so formed that it carries the edge portion of the stock into said recess farther than it does the portion near the tips of the jaws.

A further important feature of this invention is that the pincers automatically draw the stock into the jaws as they close. As applicant is advised this is a feature that is broadly new in gripping devices of any kind. This function is obtained, in the illustrated embodiment of this invention, by pivoting the device which herein also serves as a gatherer at a distance from its tip end and giving it a movement backwardly into the jaws as thejaws are closed. Advantageously this device will be provided with backwardly directed teeth to render it more efi'ective in drawing the stock into the jaws asit is turned backwardly on its pivot during the closing of the jaws.

A further feature of this invention ap pears when two thicknesses of stock are being seized, such as the shoe upper and the shoe lining, for the gathering device acts frictionally upon the lower one, as the lining, to draw it into the jaws and in doing so to take up any slack which may exist in it relatively to the upper, as frequently occurs in shoes being pulled over or lasted.

. The several features of the invention, some of which are not limited to hand pincers as will be understood from the foregoing, will now be described in connection with the drawings illustrative thereof and will then be pointed out in the claims.

In the drawings, Figure 1 is a side view to the upper material by the pincers; and Fig. 4 is a section showi h the upper material is gripped by the pincer.

In the illustrated embodiment of the present invention the pincers are of substan tially the same construction as hand pincers in ordinary use except in the respects hereinafter pointed out and comprise a pairof levers. 1 and 2 pivoted at 3 and provided with the rearwardly extending handle members 7 and 11 which are adapted to be grasped by the hand of the operator and pro vided at their opposite ends with downwardly inclined toothed gripping

jaws

5 and 6. Secured to the jaw 5 of the pincers is a head or fulcrum 4 which when the pincers are closed on the upper may rest upon the insole and form a fulcrum about which the pincers may be rocked in drawing the upper to place.

The

jaws

5 and 6 are provided with lon gitudinal slots, that in the lower jaw extend ing to the tip of the j a'w and the wider one in the upper jaw terminating near the tip as in Figs. 1 and 3. Pivoted at 10 in the slot 8 in the lower jaw 5 is a gathering device 12 in the form of a thin plate provided with backwardly faced teeth 14 on its upper edge and having a rearwardly extending tail portion 15 which contacts with a recessed cam surface 16 on the under sideof the jaw 6 as the levers are moved to grip the material. This cam surface turns the gatherer 12 about its pivot thereby forcing the opposite end of the said gatherer into the slotted portion 9 of the upper jaw. It will be seen that the movement of the gatherer 12 begins as soon as the

jaws

6 and 5 are operated but by reason of its pivoted mounting it is moved relatively to the jaw 6 or more rapidly and in its movement'is upwardly and backwardly.

A projecting pin 18 serves to keep the gatherer plate 12 in operative relation with the 'aw'5. J In use of hand pincers embodying this invention by a bed lasting machine operator, for example, the portion of the upper to be treated is seized by the pincers in the usual manner and as the jaw members are forced together the upper jaw 6 actuates the gatherer 12 about its pivot 10 from the position I shown in Fig. 1 to that shown in Figs. 2, 3

and 4, drawing the upper material backwardly into the jaws until it is held between the top jaw of the gatherer 12 and'the jaw 6. Further movement of the closing aws forces the gatherer over which the upper 20 and usually also the lining 22 lies through the recess 9 (Figs. 3 and '4) thereby gathering in the upper widthwise of the aws and taking up the fullness of the upper 20 from around a large area of the curved toe portion of the shoe as shown in Fig. 3. This effects a lateral pulling or'stretching of the portion of upper adjacent to thejaws and enables the operator quickly to remove any wrinkles within a comparatively wide area. The final movement given to the aws firmly grips the material on each side of the slot preparatory topulling it up by fulcruming movement on head 4.

The pivoted mounting of the gatherer 12 is such that the 'gatherer is given a rapid upward and backward movement simultaneous with the closing of the

jaws

5 and 6 and the toothed edge surface14 .tends to pull'on the lining 20 in advance of the pull given to the upper 22 to drawit into the jaws and incidentally to pull out any slack from the lining. I have also found that this invention can be applied to lasting machine pincers with very efifective'results and therefore I intend thatmy claims shall be construed to cover machine pincers as well as hand pin-.

cers and to afford asbroad protection as the novelty of this invention entitles me to claim. Having described my invention what I claim as new and desireto secure by Letters Patent of the United States is 1. Lasting pincers comprising, in combi-' nation, jaws, means for closing said jaws, and means movable automatically relatively to the jaws to gather the upper widthwise of the jaws as said jaws are"closed upon the upper.

2. Lasting pincers comprising, in combination, a pair of jaws, one of which is provided with a recess, and means pivotally mounted upon the other ja'w' 'to carry the stock into said recess as said jaws are closed.

3. Lasting 'fpincers comprising, in combination, jaws, one of which is provided with a recess and a gathering device mounted upon theother jaw comprising a plate pivoted relatively tofsaid jawfand having an extension arranged to be engaged by the other jaw as the said jaw'sare closedto eliect a rocking of the plate for gathering the stock into the recessed jaw.

4. Lasting pincers comprising, in combination, a pair of jaws, one of which is pro vided with a re'cess,;and means movable automatically relatively "to the jaws during their closing movement for gathering the stock widthwise of the jaws, said meansbeing constructed to carry the edge portion of the seized stock into said recess farther than portion near the tips o fsaid the edge of said stock progressively toward 7. Lasting pincers comprising, in combination, a pair of jaws, upper gathering means movably mounted relatively to the jaws, and means for operating it during the closing movement of said jaws to effect an upward and backward movement of said gathering means relativelyto the lower jaw.

8. Lasting pincers comprising, in combination, a pair of jaws, and gathering means movably mounted relatively to one of said jaws in such position that it will be operated during the closing movement of the said jaws to gather theupper lengthwise of the said jaws.

9. Lasting pincers comprising, in combination, a pair of jaws, gathering means movably mounted relatively to one of said jaws, said means having a tail piece for en gagement with the other jaw so arranged that the gathering of the stock is accomplished before the said jaws are brought into frictional engagement with the upper.

10. Lasting pincers comprising, in combination, a pair of jaws and means movably mounted on one of the jaws and constructed and arranged to be operated automatically relatively to that jaw as the jaws are closed to draw into the jaws the ply of stock that is adjacent to the jaw on which said means is mounted.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MATTHIAS BROOK.

Witnesses:

MARTHA W. COUPE, ARTHUR L. RUssnLL.

Copies of thin patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.