US959713A - Guard for shoe-stitching machines. - Google Patents

Description

G. S. CABLE. GUARD FOR SHOE STITGHING MACHINES,

APPLICATION FILED NOV. 6, 1909.

Patented May 31, 1910.

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in sitar CHARLES S. CABLE,

F PORTLAND, MAINE.

GUARD FOR SHOE-STITCHING MACHINES.

Specification of Letters Patent.

Patented May 31, 1910.

To all whom it may concern:

Be it known that I, CHARLES S. CABLE, a citizen of the United States of America, and a resident of Portland, in the county of Cumberland, State of Maine, have invented certain new and useful Improvements in Guards for Shoe-Stitching Machines, of

which the following is a specification.

My invention relates to a guard for shoestitching machines of the curved needle lock stitch type such as are used for stitching through the edges of the soles. In these machines the edge of the sole as it feeds through the machine, rests on a small table or ledge which corresponds to the bed of the ordinary sewing machine. Close beneath the table, the looper reciprocates vertically in a curved path adjacent to the upper near its junction with the sole when the shoe is held in its usual inverted position. If no guard is interposed between the looper and the upper, the leather of the upper is liable to get soiled and marked by the looper and in case of repair work where the shoe is not lasted, the upper is liable to form a wrinkle and get sewed to the edge of the sole.

The object of my invention is to provide a guard for the looper which shall occupy as little room as ossible in front of the looper; which shall be sufliciently rigid to hold the work from pressing inward against the working parts of the machine and which may be quickly swung out of the way of the table when the machine is to be threaded. In carrying out these objects, Ilprovide a support which is secured to the body of the machine, with a guard plate pivoted to its upper end so that it is normally interposed between the looper and the shoe upper and so arranged that it can be swung out of the way of the table when the machine is to be threaded.

I have illustrated my invention in the accompanying drawing in which is shown parts of a sewing machine suflicient to illustrate the use of the invention with an attachment embodying my invent-ion.

In the drawing, Figure 1 is a side elevation of a portion of a Goodyear rapid lock stitching machine so called, and Fig. 2 is a front elevation.

In the drawing, h represents'the headstock of the machine, 7" the take-up, d is the looper,

' c the table on which the edge of the sole rests while being stitched and g is the presser-foot for holding down the work.

6 represents the sole of the shoe as it rests on the table 0, and e is the upper.

In carrying out my invention, I make use of a support A which is preferably a piece of sheet metal provided with a right angle leg a whereby it is fastened to the side of the head stock 72, by means of a screw a passing through a slot a. This support A extends down in front of the take up f and effectually prevents oil from being thrown forward onto the operator. The support A terminates some distance below the looper and the table .and to its upper end is pivoted a guard 6 preferably made of sheet metal and extending when in its normal position to a point just below the upper edge of the table and just outside of the looper (Z so as to prevent the looper from coming in contact with the upper.

The guard is pivoted to the support preferably by a pair of rivets b and 5 one of these rivets passing through a slot in the guard concentric with the other rivet and so located that the guard may be swung to the right on the rivet I) as a center and to a position entirely free from the table as shown in dotted lines in Fig. 2.

When the guard is in its normal position the end of the slot forms a stop so that it prevents the guard from being dlsplaced as the shoe is fed from right to left. The guard is thus positioned to protect the upper from coming in contact with the looper but it may be quickly turned down to a position where the machine may be threaded by passing the thread up through the table. This is very essential as stated, in repair work, and while my device is well adapted to machines used in manufacturing it is specially designed and adapted for repairing work where the thread is liable to frequent breakages. A guard may be formed otherwise than as here shown and otherwise pivoted to the support, the essential thing being that it may be quickly swung to a position which will per init the threading of the machine.

It is evident that by the use of my attachment the shoe may be stitched either with or without a last and without any danger of injury to the upper.

I claim 1. In a shoe sewing machine having a needle, an attachment therefor comprising a support, a plate pivoted to the upper end of said support, the axis of the pivot being substantially parallel to the plane of movement of the needle, so as to allow the plate to swing laterally therefrom, and said piv oted plate being movable to inoperative position in a direction diametrically opposite to the direction of passage of the shoe through the machine whereby the frictional contact of the shoe tends to maintain said attachment in operative position.

2. An attachment for shoe stitching machines of the classdescribed consisting of a supporting plate secured to the body of the machine and a guard plate adapted to be positioned normally between the looper and the shoe upper and a pair of rivets pivoting the guard plate to the upper portion of the supporting plate, a slot being formed in the lower end of the guard plate concentric with one of said rivets and permitting the passage of the other rivet.

In witness whereof I have hereunto set my hand this 30th day of October, 1909.

CHARLES S. CABLE. WVitnesses ELEANOR V. DENNIS,

S. W. BATES.

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