US189960A - Improvement in attaching handles to crosscut-sa - Google Patents

Description

C. A. SANDS. ATTACHING' HANDLES To moss-cw SAWS. No. 189,960. Patented Ap rilz, 1877.

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NPETERS. PHQTO-LITHOGRAPHER. WASHINGTON, DUB

Persia CHARLES TA. SANDS, OF BURLINGTON, KANSAS.

Specification forming part of Letters Patent No. 1 89,960, dated April 24, 1877; application filed January 29, 1877.

To all whom it may concern Be it known that I, CHARLES A. SANDS, of Burlington, in the county of Coffee and State of Kansas, have invented an Improvement in Attaching Handles to Orosscut-Saws, of which the following is a specification:

In the accompanying drawing, Figure 1 represents a side elevation of my improved 7 danger of accidental injury by the teeth, the

handles being capable of adjustment, whatever the direction of the saw, so as to admit the upright position of the sawyers, and the sawing ofi of the timber close to the ground.

The invention consists of a saw with a detachable spring-guard, that serves to stiffen the back of the same, and also to cover the teeth of the same after use.

It consists, further, of adjustable handles applied to face-plates clamped to the saw ends.

In the drawing, A represents a saw-blade of the usual size for cutting timber, which is preferably made with a back curved to the same degree, or symmetrically to the front or teeth, as shown in Fig. 1. l

The front and back of the saw-blade A are provided, near the ends, with L-shaped recesses or notches a, into which the cross-pins b, of adetachable spring-guard plate, B, look when inserted therein.

The cross-pins b are supported in end lugs b of the spring-guard B, as shown in Fig. 2, said lugs bearing on both sides of the sawblade, while intermediate parallel lugs d of the guard B bear on both sides of .the saw, and serve, when the same is applied to the back, to stiffen the same, so as to secure'a' straight out at whatever position the same is held.

It is especially useful when the saw is held in horizontal position for cutting down trees, as thereby the extra effort necessary to overcome the wave motion of the saw is not required.

The support given to the saw-bac at the end and intermediate points, by the bindinglugs, facilitates the horizontal cutting of the saw, and brings the same more fully within control of the sawyers.

When the cutting is completed the springguard is detached from the back and attached to the front or face of the saw, so as to protect the teeth when the saw is not used, and admit the convenient carrying of the same by the workman when going to or from the work.

l The handles 0 are attached to disk-shaped plates D, that are clamped to corresponding base-plates D, secured at right angles to the saw. The base-plates D look, by cross-pins eof lugs 6 into L-shaped end recesses e of the saw by turning the screw-nuts f of clampbolts f tightly against the under side of the base-plates D. The clamp-bolt 1" passes through center holes of the handle-plates D D, and serves, in connection with the head of the bolt f and an outer wing-nut, f, to clamp the handle plates rigidly together. One or more pins, g, of the handle-plate D enter corresponding holes 9 of the base-plate, and admit thereby the setting'of the handles into line with the blade for common cutting, or at right angles to the same for cutting trees, or at any other angle, as required.

The handles are thus alwayskept in vertical position, allowing the men to stand upright when using the saw.

The handleplates prevent the saw irom coming in contact with the ground when laid down, so as to avoid dampness, rust, &c., as the plates form supports for the saw in any position of the same.

Having thus described my invention, I claim as new and desire to secure by Letters Patexit- 1. The combination of a detachable springguard plate with a saw-blade, said guard-plate being adapted for attachment either to the front or back of the saw-blade, substantially as and for the purpose set forth.

2. The combination of the adjustable ham dle-plate D and the attaching-plate D, havclamping-bolt f and. clamping-nuts f and f ing lugs (2, pins e, bolt f and nut f, with the to set the handle at any position to saw-blade, saw-blade having L-shaped end slots 6 subsubstantially as specified. stantially as and for the purpose set forth.

3. Dhe combination of crosscut-saw A and CHARLES A. SANDS. plate D, clamped at right angles to saw-blade, Witnesses: and provided with holes g, with adjustable PAUL GQEPEL,

handle-plate D, having/pin or pins g, and with G. SEDGWIOK.

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