US257802A

US257802A - James e

Info

Publication number: US257802A
Authority: US
Publication date: 1882-05-09
Anticipated expiration: 1899-05-09

Description

(No Model.) v

JUR. WOODROUGH.

HANDSAW.

Patented May'9, 1882;

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UNITED STATES PATENT OFFICE.

JAMES B. WOODROUGH, OF CINCINNATI, OHIO, ASSIGNOR TO \VOODROUGH 85 MOPARLI N, OF SAME PLACE.

HANDSAW.

SPECIFICATION formingpart of Letters Patent No. 257,802, dated May 9, 1882.

Application filed December 14, 1881. (N model.)

To all whom it may concern:

Be it known that I, JAMES R. WOODROUGH, of the city of Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Handsaws, of which the following is a specification.

This invention relates particularly to meatsaws. Its objects are to provide a convenient means to readily attach and detach the blade, and to tighten or loosen the same in its frame. These objects are accomplished by the means illustrated in the accompanying drawings, in which Figure l is a side view of a saw embodying my improvements. Fig. 2 is a view of the for ward end of a saw, showing the form of tightening device I adopt for attachment to that end of the saw-frame. Fig. 3 is a full-sized perspective view of the tightening device represented in Fig. 1.

Similar reference-letters represent identical parts in the different views.

A is a bent metal frame, secured in a curved groove in the ordinary handle, 13, a part only of which is shown in Fig. 1, the inner curve of the frame and handle being flush with each other.

O is a lever, made preferably of malleable cast metal. It has a groove to receive the end of frame A, to which it is attached by a fulcrum-pin, c, which passes through its overlapping sides and the end of the frame, and is secured in place by riveting. The lower end of the lever O is slit to receive the saw-blade D, and transversely notched to admit the pin a, which passes loosely through the blade. The upper end of piece G is perforated and tapped to receive the screw E, which passes through it and bears against the inner edge of the frame A. By means of-the screw the blade maybe tightened or relaxed when desired.

It is the intention to provide several blades with each frame, so that while some are being sharpened one may be used, thus making one frame answer where several are now required. 5 In the modification shown in Fig.2 the screw E is tapped through the shortened forward end of frame A, and bears against the inner edge of a lever, F, which has its fulcrum in a pin,f, passed through the upper end of the'5o lever and the frame A. The rear end of frame A (not shown) is extended down and transversely notched to receive the fastening-pin of theblade, similar to the forward end of the frame A, Fig. 1. i

It would be no departure from my invention to shorten the rear end of frame A and to fulcrum the lever upon the handle, thus making the handle a part of the frame.

What I claim is-- In a han'dsaw of the character described, the combination, substantially as hereinbefore set forth, of blade D and handle B with a curved metal frame, one end of which extends to receive the end of the blade and the opposite end shortened. to receive a lever which forms a continuation of said frame, a lever fulcrumed upon said shortened end, one arm of said lever adapted to receive one end of the saw-blade and the opposite arm extended opposite the shortened end of the frame, and a or loosening the saw-blade.

JAMES R. WOODROUGH.

Witnesses:

GEo. J. MURRAY, RUFUS L. Woonnouen.