US1122305A - Gripper. - Google Patents

Description

'J. P. REID.

GRIPPBR.

APPLICATION FILED AUG. 31, 1911.

1,1 @Qfififi Patented Dec. 29, 1914.

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JOHN F. REID, 0F BEVERLY, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, OF PATTERSON, NEW JERSEY, A GORPORATION OF NEW JERSEY.

GRIPPER.

masses.

Specification of Letters Patent.

Patented Dec. as, rare.

Original application filed January 28, 1909, Serial No. 474,820. Divided and this application filed August 31, 1911. Serial No. 647,017.

To all whom it may concern:

Be it known that 1, JOHN F. Run), a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Grippers, of which the fol lowing description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to'lastin'g machines and particularly to improved mechanism for gripping the upper preparatory to working it over a last.

The invention is shown as embodied in a machine of the type known as the hand method lasting machine, an example of which is shown in United States Letters Patent No. 423,922. granted March 25, 1890, on application of Gooding and Ladd.

A feature of this invention consists in a novel construction of the gripping devices which are actuated to work the upper over the last and lay it in folds or plaits and there hold it while the fastening mechanism advances into position to insert a tack for securing the upper.

The novel gripping device possesses the advantages of simplicity and economy of construction and durability as well as special adaptation for the purposes for which it is devised.

These features and others, including certain details of construction and combinations of parts, will appear in connection with the following description of the illustrated mechanism and will then be pointed out in the claims.

The figure represents a fragment of the front portion of the head of a machineequipped with the improved gripping mechanism.

The grippers comprise a. rigid jaw 10 and a pivoted jaw 12, which latter is formed with a lateral arm 14: located substantially midway between its upper and lower ends and extended through the holder for the jaw 10 where it is pivoted at the back thereof at 16. A link 18 forms a flexible connection between the upper arm 20 of the pivoted jaw and its actuator 22 which is a push rod. This link permits the jaw 12 to turn in an are about the pivot 16. It will be observed that the link 18 forms one member of a toggle, the other member of which is formed by the upper arm 20 of the jaw 12 together with the lateral arm 14. This second or lowermember of the toggle has its fulcrum in the pivot 16 which is at one side of theline of pressure from the actuator 22 by which the toggle is operated to vclose and open the grippers. This gives a long and advantageously arranged leverage through which the jaw 12 is rocked toward the other jaw to grip the work and hold it while the shoe upper is being pulled. The jaws 10 and 12 are mounted upon telescoping shanks 22 and 2 1. the latter of which has a ball head by which it is suspended from a socket block 26 on the front end of a vertically oscillating lever 28 fulcrumed upon the machine frame and actuated by a suitable cam on the main shaft. The shank 22 extends above the lever 28 and is engaged by an arm 36 of a rock-shaft 30 which also receives motion from a cam onisaid shaft to depress the shank 22 for closing the grippers, which are herein opened by a spring 32 which actsupwardly on-a pin 34 projecting laterally from the shank 22 through a slot in the sleeve 24. The spring rests upon a guide through which the shanks are vertically movable. As the shaft 30 is rocked by a cam on the main shaft, the arm 36 thereon forces down the shank 22 against the spring 32 and through the connecting link 18 causes the gripper jaw to move about its pivot 16 and seize the upper between its gripping portion 12 and the jaw 10. The jaws now receive motion from a cam on the main shaft through a spring to overdraw the upper after it has been pulled upwardly by the grippersthrough motion of the lever 28. The grippers hold the upper until the advance thereon of the tack block 38 with its attached wiper 40, which receive their motion from a cam on the main shaft.

The mechanism fonimparting to the grippers their additional movements for forming folds or plaits to take care of fullness in the marginal portion of the upper at the toe and other convex curved ed e portions of the upper, (herein only partially shown), form no part of the present invention and for a full description thereof reference may be had to Patent No. 1,006,006, granted October 17 1911, on an application filed by me of which this is a division.

Having explained the nature of this invention and described a preferred construction embodying the same, I claim as new and desire to secure by Letters Patent of the United States 1. A stepby-st'ep lastingmachine having, in. combination, a suitable power-driven actuating mechanism, a gripper carrier, a rigid jaw on the carrier, a second jaw havinga rigid lateral arm pivoted to the jaw carrier at a point laterally remote from the second jaw whereby the saidsecond jaw is compelled to move rapidly outwardly from the first jaw as it isrocked bodily in an arc aboutsaid pivotal connection, and a flexible connection between the pivoted jaw and the actuating mechanism to rock said jaw.

2. lasting machine having, in combination, arelatively fixed: jaw, a relatively movable jaw, a toggle adapted to be bent for closing thejaws, and a, push rod for operating the toggle.

3', A lasting machine having, in combination, a relatively fixed jaw, a relatively movable jaw, anormally bent toggle for closing the jaws, and a push rod operating to bend the toggle farther to close the jaws.

4:. A lasting machine having, in combination, a relatively fixed jaw, a relatively movable jaw, a toggle member formed on said movable jaw and pivotally supported on that side of the fixed jaw which is the more remote from the movable jaw, a push rod and a second toggle member connecting the push rod to said first-mentioned toggle member, said rod being operable to flex said toggle to close the jaws.

5. A lasting machine having, in combination, a gripper jaw, a second jaw, a toggle member forming part of said second jaw and comprising angularly disposed relatively rigid arms fulcrumed at the free end of one of said arms, a toggle member connected to the other arm and a push rod mounted for right line movement and con nected to said last-mentioned toggle member.

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

JOHN F. REID.

WVitnesses:

G120. ROBINSON, R. A. SPENCE.

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

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