US326343A - Sawing-machine - Google Patents

Description

(No Model.)

W. W. SMITH.

SAWING MACHINE. A No. 326,343. Patented Sept. 15, 18.85.

N, PETERS, PholmLilhogviphar. Washl'llginn. D. CA

NITED STATES SAWlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 326,343, dated September 15, 1885.

Application filed April 24, 1885. (No model.)

To @ZZ whom, it may concern:

Be it known that I, AWILLIAM W. SMITH, a

citizen of the United States, residing at Boyne vto the letters and figures of reference marked thereon, which form a part of this specilication.

The invention relates to machines for sawing; and the novelty consists in the construetion, arrangement, and adaptation of parts, as will be more fully hereinafter set forth, and specifically pointed out in th'e claims.

The invention has for its object to produce a machine which will allow the transmission of force to a reciprocating or crosscut saw with the greatest economy, one which is durable, useful, and simple in operation. It is` illustrated in the accompanying drawings,

which forma part of this speciiication, and in which- Figure l is an elevation in perspective, and Fig. 2 an elevation viewed from another point.

Referring to the drawings, A A A2 designate the three legs of a tripod, having teeth c upon their inner faces, and adapted to be secured to the log or other article to be sawed by a chain, b, and a windlass, B. The windlass isjourualed in two of the legs of the tripod, and the chain connects with the remaining, and when force is applied to the windlass by means of the lever b and dog b2 the teeth are forced into the log to give the tripod a irm bearing, a dog or pawl, b3, serving to prevent the windlass from moving back.

Journaled in proper brackets, C, secured upon the legs A A2 of the tripod, is a shaft, D, which carries pedal-levers D Dl and a iiywheel, D2. A roller or sleeve, d, arranged upon one of the levers D', is loosely received in a slot. e, of an oscillating arm, E, carrying upon its lower end the saw M. This arm is pivoted in movable bearings or guides f, in a standard-frame, F, with freedom for vertical movement in said guides. A rope or cord, g, attached to the upper end of the arm E, passes over a pulley, g', upon the upper portion of the standard-frame, and thence down and over a windlass, G, journaled in said frame f, a hand-crank, G', upon said shaft allowing the saw to be elevated at will, and a dog, g2, controlling the windlass.

An operators seat, H, is arranged upon the tripod, so as to place the pedal-levers and the crank G within convenient reach of the operator.

As thus far described the saw is given its motion through the medium of the pedal-le vers; but I combine a hand-power with this arrangement, which I will now describe.

Upon brackets I isjournaled a shaft, il", having hand-cranksjupon either side, the said shaft carrying a sprocket-wheel, L, which, by a chain, L, is connected to a sprocket-wheel, L2, upon the shaft D. By this construction the operator may combine both hand and foot action when he occupies the seat, and may for some service operate the hand-power when standing upon the ground.

' Odesignates an ordinarypivoted saw-guide.

In practice, motion having been given to the saw it is allowed to gravitate as fast as the work will permit, the standard E sliding down the guides of the frame F with freedom. When it is desired to elevate the saw, the windlass above is used and the dog will hold the saw elevated when not in use.

Modifications in details of construction may be made without departing from the principle or sacrificing the advantages of myinvention, the essential features of which will be readily understood from the foregoing description, taken in connection with the drawings.

What I claim as new is- 1. A sawing-machine havinga tripod-frame with the legs or branches thereof provided with teeth adapted to engage a log, a windlass journaled in two of the legs and connected with the opposite leg by means of a chain, substantially as specified.

2. A tripod-frame having a windlass journaled in two of its legs or branches, a chain connecting the opposite leg with the windlass, a ratchet on the said wi'iidlass, a pawl engag- IOC) ing the ratchet, and a hand-lever carrying a pawl adapted to engage the ratchet and rotate the wndlass, whereby the legs of the tripod may be brought to engage a log7 sub stantially as specified.

3. The combination, with the tripod-frame, ofthe frame F rising therefrom, and provided with the pulley g' at its upper end, the slideframe f, arranged on the said frame F, and carrying a drum, pawl, and ratchet. a chain connecting t-he slide-frame With the drum and passing over the pulley g', the slotted sawfraxne E, pivoted at its upper end to the slideframe f, and the pedal-levers adapted to vibrate the saw-fran1e by engaging the slot theresubstantially as specified.

a horizontally-vi- 4. In a sawing-machine,

brating slotted saw-frame pivoted at its upper end to avertieallymovable frame or block, a shaft journaled in the Inain frame and hav ing one of its pedal-levers passing through the Slot in the Saw-fra1ne to vibrate the saine, a

sprocket-wheel arranged on the pedal-lever shaft, a sprocket-Wheel having a crank-arm and journaled above the pedal-lever shaft, and a chain connecting the said sprocket-wheel, whereby the pedal-levers and hand-levers may be operated simultaneously, substantially as specified.

5. In a sawing-machine, the combination, with a main frame, of a vibratory saw-frame longitudinally slotted and pivoted at its upper end, a shaft having pedal-levers journaled in the main frame and adapted to vibrate the said saw-frame and Saw by having one of the pedal-levers engage the said saw-frame, substantially as specified.

In testimony whereof I ax my signature in presence of two Witnesses.

WILLIAM W. SMITH.-

Vitnesses: i

NATHANAL G. SMITH, FRED TEMPLE.

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