|Publication number||US509253 A|
|Publication date||Nov 21, 1893|
|Publication number||US 509253 A, US 509253A, US-A-509253, US509253 A, US509253A|
|Inventors||George A. Shields|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (88), Classifications (1) |
|External Links: USPTO, USPTO Assignment, Espacenet|
Safety-guard for rip-saws
US 509253 A
(No Modem 'G. A. SHIELDS.
SAFETY GUARD FOR RIP SAWS.
No. 509,253. Patented Nov. 21, 1893,
TEL-Z.- .1. ,ifi v1 WITJVESSES w INVENTOR citizen of the United States, and a resident of "UN TE STATES PATENT ()FFICE.
A. SHIELDS, OF ANDERSON, INDIANA.
SAFETY-GUARD FOR RIP-SAWS.
J SPECIFICATION forming part of Letters Patent No. 509,253, dated November 21, 1893.
Application filed March 31,1893.
To all whom it may concern:
Be it known that I, GEORGE A. SHIELDS, a.
Anderson, in thecounty of Madison and State of Indiana, have invented certain new and useful Improvements in Safety-Guards for Rip-Saws 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 letters of reference marked thereon, which form a part of this specification.
Figure 1 of the drawings is a top plan view. Fig. 2 is a vertical longitudinal section, and Fig. 3 are views in detail.
This invention has relation to safety guards for circular or rip 'saws, the object being to provide a simple and efiective device for saws of this character, by means of which not only will the hands of the operator be prevented from coming in contact with the saw, but which will also protect his face and body from injury by flying splinters or slivers; and the invention consists in the novel construction and combination of parts, all as hereinafter described.
Referring to the accompanying drawings in which I have shown a very convenient application of the invention, the letter A designates a saw table, B the saw hung therein in the customary manner, and O is the gage ordinarily employed upon saw tables.
- Secured upon the table near a lateral edge thereof is a standard D, having therein a vertical bore, in which is held a rod E which is arranged to slide up and down in said bore, and is held to the proper adjustment by means of a set-screw a. Said rod E is also capable of a rotary movement in said standard. A spring E is placed in said standard underneath the rod E. On the upper end of said rod is an enlarged portion 12, having therethrough a horizontal aperture, in which is adjustably held by a screw 0, a horizontal arm F, which terminates over the highest portion of the saw, and carries thereat a coupling piece G. Passing perpendicularly through said coupling is a rod H, which at its lower portion has a screw-thread for engage- Serial No. 468,488- (No model.)
ment with a clamp block I. Said rod H is held to the proper vertical adjustment by means of a set-screw d. A spiral spring 01, with clamp screw d may be used either above or below the coupling G.
K designates the guard proper, which consists of a curved piece of spring metal, held by the clamp I over the saw, and which is extended out at the lower frontedge of the blade, as shown at h, such extended portion being turned upwardly in order to facilitate the entrance of the board or other lumber to the saw.
The guard is usually made in two pieces, joined at the clamp with their meeting ends overlapping each other, so that by loosening the clamp, the two parts may be extended upon each other, or contracted, in order to suit the guard to saws of different diameters, the other parts, as will be apparent from the above description, also being capable of adj ustment for this purpose.
In order to hold the portion hot the guard more solidly and rigidly to its bearing position, a spring L may be arranged to bear thereon, the tension of said spring being controlled by a screw L.
When the guard is made of extra strong spring metal, it is advisable to employ small anti-friction rollers, which are journaled in the horizontal extensions h, h at the ends of the guard, to assist in moving the lumber forced thereunder. These may however be omitted.
The standard D may be held in a socket piece M, in which said standard is arranged to slip in and out at will. This socket piece is preferably embedded in the table flush with the top thereof.
The construction readily permits the guard to be swung around and away from the saw at pleasure.
Having described this invention, what I claim, and desire to secure by Letters Patent, 1s
1. The herein described saw guard, comprising a standard D supported upon a saw table, and having therein a vertical bore, a rod E, capable of a vertical and a rotary movement in, said bore, a horizontal arm F connected to the said rod E, and extendedto a point over the saw, a coupling piece G carried by said arm F, a vertical rod H held adjustably in said coupling piece, a clamp block I having a threaded engagement with the lower end of said rod H, and the guard proper comprising two curved plates of spring metal united and held by said clamp and arched over the periphery of the saw, said plates having their lower end portions curved upwardly from said table, substantially as specified.
2. The combination of the saw table and saws, of the standard supported upon said table, the socket piece in which said stand ard is held, the rod adjustably supported in said standard, the spring upon which said rod seats, an arm carried by said rod, and extending over the saw, a spring for said arm,
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