US175617A

US175617A - Improvement in saw-sets

Info

Publication number: US175617A
Authority: US
Publication date: 1876-04-04
Anticipated expiration: 1893-04-04

Description

UNITED STATES PATENT OEEIoE.'-

ABBOTT MORGAN, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENTIN SAW-SETS.

Specication forming part o'f Letters Patent No. 175,617, dated April 4, 1876 application filed March 1876.

To all whom t may concern:

Be it known that I, ABBOT'I` MORGAN, ot' the city and county of Philadelphia and State of Pennsylvania, have invented a new and usef'ul Improvement in Saw-Sets; and I do hereby declare the following to be a clear and exact description of the nature thereof, sufficient to enable others skilled in the art to whichmy invention appertains to fully understand, make, and use the same, reference being had to the accompanying drawings,l making part of this specitication, in which- Fgure 1 is a top or plan view ofthe device embodying my invention. Fig. 2 is a i'ront view thereof. Fig. 3 is an end viewthereof.

Similar letters ot reference indicate corresponding parts in the several Iigures.

My invention consists ofa bed and clampingbar, held together by clamps, which are constructed in parts, with tongue-amlgroove connection, and separated by springs, whereby the saw-blade may be heldea'sily, rmly, and uniformly at all points, and the clamps open in right lilies so that the saw may be readily removed and introduced during the setting operation without necessarily separating the bed and bai" to any great extent.

Referring to the drawings, A represents the bed, on the upper face of which, at both sides, there is a slope or level, a; and B, the clamping-bar, which is arranged above the bed, betweenwhich and the bar the sawblade is to be held. G represents clamps for clamping the bed A and bar B. Each clamp vis made in two parts, which'are itted together by V-shaped tongue and groove b c, and one part is attached to the bed A and the other to the bar B, and a screw, D, is passed through the two parts for bringing them together and thereby clamping the bed and bar with the saw-blade between them.

In order to open the two parts of the clamp, there is interposed a spring, E, which, when the screw D is loosened, separates said parts, thus removing` the pressure on the bed and har and permitting the removal of the sawblade.

The operation is as follows: The screws D will be loosened and the saw-blade introduced between the bed and har so that the teeeth rest over the inner bevel a. The screws are then tightened, and the'alternate teeth will then be set in well-known manner; the screws are then loosened, the saw-blade reversed, the

screw tightened, and the other teeth are set.

It will be seen that when the two parts of the clamp open, the upper part moves in a right line, so that the space between the bed and bar will be the same at their inner and I claim as new, and desire to secure by Letters Patent, is-

'The bed A and bar B, in combination with the clamps C, formed in parts with tongueand-groove connection b c, and the spring E, substantially as and for the purpose set forth.

ABBOTT MORGAN. Witnesses:

JOHN A. WIEDEEsHEIM, JN0. A. BELL.