US273404A

US273404A - Saw-guard

Info

Publication number: US273404A
Authority: US
Publication date: 1883-03-06
Anticipated expiration: 1900-03-06

Description

(No Model.)

D. W. SWANK.

SAW GUARD. No. 273,404. Patented Mar 6, 1883 Fig.1.

Ji I Z, I 2 if W msses ga /rm UNITED STATES P TENT OFFICE.

DAVID w. swANK, OF ANDERSON, INDIANA.

SAWI-GUARD.

SIECIFICATION forming part of Letters Patent No. 273,404, dated March 6, 1883. Application filed May 29, 1882. g (No model.)

To all whom it may concern:

Be it known that I, DAVID W. SWANK, a citizen of the United States, residing at Anderson, in the county of Madison and State of Indiana, have invented certain" new and useful Improvements in Circular- Saw Guards; and I do declare the following to be a full, clear, and exact description of the invention, 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 and figures of reference marked thereon, which form a part of this specification. I

My invention relates to a guard for circular saws; and the novelty consists in the construction, arrangement, and adaptation of parts, as

will be more fully hereinafter set forth, andspecifically pointed out in the claims.

The object ot'the invention is to provide a separable attachment to circular-saw mills adapted to prevent injury to the operator arising from cutting of the hands by. the saw, by the saw flying into pieces when running free, or by the lumber being thrown back upon the operator, and in abating the inconvenience of flying dust; and to these ends the invention consists essentially in a guard having one closed side, an extending flange upon said side, an oppositely-extending flange adapted to ride the sawed piece of lumber, a dustcatching flange upon the other edge, and an inclined feed-piece upon the front, the whole being made from a properly-cut single piece of sheet metal. This guard is rigid, with a vertical shank which operates in guides, and a counterpoise serves to compensate toward the gravity of the guard, as shown.

The invention is fully illustrated in the'accompanying drawings, which form a part of this specification, and in which- Figure l is a sideelevation, partially broken away; and Fig. 2, a perspective view of the guard removed.

Referring to the drawings, A represents a suitable bench or table, in which is journaled a circular saw, B, and which is provided with a vertical guide, 0, carrying a pulley, D. Op-

erating in the guide (J is an arm, E, and from a pin, F, a rope, G, pa-sses over the pulley D, and has secured upon its free end a counterpoise, G.

Rigid with the arm E is the guard H, which is constructed as follows: w

h represents a semicircular closed vertical. side, the segmental edge of which is provided with a flange, h", which projects over the saw, or that portion ofthe saw above the table, and k a flange which rests upon the table when the saw is not in operation; k a projecting portion having a flange, h, which rides upon the sawedlumber, and Man incline under which the lumber is forced to elevate the guard.

The guard H, as thus described and shown, is formed of a single piece of sheet metal or wood. The flange It holds the guard elevated until the succeeding piece of lumber is in position. The arm E serves to hold the saw-kerf open, and prevents the lumber from riding as well as the saw from binding. The flange It prevents the dust from flying, and the counterpoise G prevents the arm E from binding in the guide 0 when the end of the guard-carryin'g incline it is forced upward by the lumber.

I am aware that it is not broadly new with me to provide dust-abating devices for circular saws, nor is it new with me to provide a guard having an incline and means for retaining an elevated position when in operation, as such devices have been before known and used, and are not sought to be covered in this application; but I 1 WVhat I do claim is- 1. The guard H, composed of the closed side h,flange h, projecting portion [L3, having flange h, and incline 7L formed of a single piece of sheet metal or wood, combined with the kerf- DAVID W. SWANK.

Witnesses:

OHAs. J ONES, H. U. PAYNE.