US43408A - Nicholas holden - Google Patents

Description

N9. 43,408. PATENTED JULY 5, 18614.

N. HOLDEN. STITGHING CLAMP.

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UNITED STATES PATENT OFFICE.

jnioHoLAsHoLDEmor new Yon- N. Y.

sTI Qi-IiNG-CLAMP.

To all whom it may concern Be it known that I, NICHOLAS HOLDEN,

of the city, county, and State of- New York.

have invented a new and useful Improved Stitching-Clamp; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making apart of this specificatimn To enable others to make use of and understand my invention, T will proceed todescribe its construction and operation.

I construct a clamp after the old form now in use, with the exception that onejaw of the clamp is made'shorter than the other, and-1n the shortest jaw I form a groove or socket, as shown at A in Figure 1. In the socket or groove I insert a loop-stick which projects out of the groove, as shown at F in Fig. 4. Around that end of the loop-stick which projects is bent the leather or other material, arshown at L in Figs. 2 and 3. As soon as the material is bent around 'the loop-stick, the operator attaches his footto the end of the strap B, and by pressing down upon-it, draws the two jaws together, thereby grasping the material firmly, and keepingit in shape until it is sewedand formed into a 'loop'. v

The object of constructing a clamp after the above fashion is that it insures a uniformity in the size and shape of the loops, and prevents the material from slipping out of the'clamp during the operation of sewing. The-old plan is to make both jaws ofthe clamp alike, solid, and without a groove for the receptionof a loop-stick, and the material to be made into loops is merely held by the corners of the jaws. The consequence is that as soon as the sewer pulls the thread tight the mateiial slips out, and it is very difficult to make two loops alike in shape or size.

Fig. 1 is a top view. Fig. 2 is a front elevation.

Fig. 3 is a side elevation. a vertical cross-section. of the adjustable loop'stick.

Fig. 4 is Similar letters of reference refer to corresponding parts in all the views.

The groove A is where the loop-stick is inserted, as shown in Fig. 1. The strap B runs through groove H and connects with loop G, affixed to jaw D, in which is loop-stick F, as shownin Fig. 4. The bottom piece, U, has two screw-holes, II, by whichfit is attached to the work-table, as shown in Fig. 1. The two jaws D 'D grasp the material to be made into the form of a loop by the action of the strap '3, which is governed by the 'foot of the operator and drawn down thereby, thus keeping the material firmly-in shape until it is sewed to getlrer and the loop L formed, as shown in Fi 2. 7 piece, 0, and the jaw D, which holds the loop. stick F, for the purpose of opening the jaws D D, to allow the leather L- or other material to be bent around the loop-stick'F, as shown in Fig. 3. The loop stick F is notched'on the upper end, K,-to show how the size may be increased or decreased by inserting a stick with a wider or narrower shoulder, as shown in Fig; 5. The loopG is attired to the metal plate on the insideot jaw D, which holds loop-stick- F, and connects with the strap B,

which passes through groove H on' the oppo- Fig. 5 is a side View The hinge 'E is aflixed to the bottom

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