US236690A - mulfoed - Google Patents

Description

(No Model.)

E. OQMULFORD.

Saw Tooth.v K 1 No. 236,690. K Patented Jan; 18', 1881.

UNITED STATES EWING C. MULFORD, OF TRENTON, NEW JERSEY.

SAW-TOOTH.

SPECIFICATION forming part of Letters Patent No. 236,690, dated January 18, 1881. Application filed December 2, 1880. (No model.)

To all 'whom it may concern:

Be it known that I, EWING C. MULFORD, a citizen of the United States, residing at Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful Improvements in Saw-Teeth; and I vdo hereby declare the following to be a full, clear, and exact description ofthe invent-ion, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying' drawings, and to the letters or gures of reference marked thereon, which forni a part of this specification.

This invention relates to that class of insertible saw-teeth which are secured to the saw-plate by means of a locking-shank and rivet, so that they may be readily detached and replaced without the necessity of employing any special implement; andthe invention consists in certain details of construction and peculiarities of form in the tooth, lookin gshank, and recessed sawplate, as hereinafter more fully described and claimed.

In the drawings, Figure l represents a side view ofa portion of saw-plate, showing a tooth secured in one recess, while another recess is left vacant, in order to show its form more clearly. Fig. 2 shows views of the saw-tooth, and Fig. 3 views of the lockingshank and rivet.

A is a saw-blade, the throat ot' which is provided with a large recess, A', having a beveled edge or triangular tongue, a., extending throughout its length, to engage with corresponding V-shaped or triangular grooves on the inner edges of the tooth B and lockingshank G. Within the large recess is formed a smaller recess, c', for the reception of apro- 4o jection, b', on the inner edge ofthe saw-tooth.

The tooth B is expanded or swaged at its cutting-point, as shown in Fig. 2, and is provided on its inner edge with a triangular groove, b, and projection b, for engaging with the triangular edge a and recess a of the saw l plate or blade. The front or outer edge of the tooth has an irregular or indented outline, which engages with one end of the lockingshank C, and is provided with arecess or socket, c, for the reception of the beveled point c on the extreme end of said shank. This locking-shank C is formed as shown in Fig. 3,

and has upon its inner edge a triangular groove, d, extending from its rounded end d to the semicircular recess e, which forms, in connection with the corresponding recess e in the end of the saw-tooth, an oriice for the reception of the rivet D, which, when placed in position, secures the parts, and assists, in connection with the grooves b d and tongue a, to prevent lateral movement thereof.

It will be observed that the locking-shank C, being in length less than one-half ot' the throat-space E, may be readily removed without having to take out the tooth and without the need of employing a wrench to disconnect the parts, which may be easily separated as soon as the rivet is removed.

I am aware that saw-teeth have been secured to the blade by means of screws or rivets inserted in one or more orifices made partly in the tooth or locking-shank and partly in the saw-blade, and that a saw-tooth and locking-shank adapted to recesses cut in the blade are not new. These, however, I do not broadly claim but,

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The insertible saw-tooth B, having ou one edge the triangular groove b and projection b, and on its opposite edge the recess c and semicircular recess e', substantially as and for the purposes specified.

2. The saw-tooth B, provided with triangular groove l), projection b', and recesses c c', in combination with the recessed blade A and suitable locking devices, substantially as shown and described.

3. The combination, with the saw-blade A, having recesses A/ a and triangular tongue a, of the tooth B, provided with the triangular groove b, projection b, and recesses c e', the locking-shank C, having triangular groove d, recess e, and beveled point c', and the rivet D, all constructed, arranged, and operating substantially as and for the purposes specifled.

In testimony whereof I affix my signature in presence of two witnesses.

EVING C. MULFORD.

IVitnesses:

Lnwrs PARKER, Jr., WM. H. YARD.

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