US258324A - Drag-sawing machine - Google Patents

Description

No Model.) 2 Sheets-Sheet 1; A. J. 8v. J. N. SMITH.

DRAG SAWING MACHINE.

-N0. 258,324. Patented May 23, 1882.

No Model.)

2 Sh'eetsSheet 2. I

A. J. &. J. N. SMITH. DRAG S'AWING MACHINE.

. No. 258,324. I

PateptedMay 23, 1882.

UNITED. STATES PATENT QEErcE.

ANDREW J. SMITH AND JASPER N. SMITH, ()F PLATTEVILLE, WISCONSIN.

DRAG-SAWI'NG' MACHINE.

SPECIFICATION formingpart of Letters Patent No. 258,324, dated May 23, 1882.

' Application filed October 29, 1881. (No model.)

To all whom it may concern:

Be it known that we, ANDREW J. SMLTH and J A SPER N. SMITH, citizens of the United States of America, residing at Platteville, in the county of Grant and State of Wisconsin, have invented certain new and useful Improvements in Drag-Sawing Machines; and we do hereby declare thefollowing 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 or figures of reference marked thereon, which form a part of this specification.

This invention has relation to portable dragsaws of that class in which two or more saws are used.

The object of this invention is to construct drag-saws of the class named which will have the qualities of durability, speed to do the work quickly, and which may be carried from place to place, forming an important factor or adjunct to a farm.

Ourinventiou consists in the novel construe tion and combination of parts, as will be hereinafter more fully set forth.

In the accompanying drawings, Figure 1 represents a perspective view of our improved machine. Fig. 2 is a longitudinal central sectional view of the same. Fig. 3 is a perspective view. of one of the cross heads, showing portions of the attachments; and Fig. 4 is a modification of the clamping-bar.

The letter A represents the saw-frame, built substantially as shown in the drawings, and provided at its forward end with wheels at and at its rear with handles for the purpose of lifting and moving itl'rom place to place. On the upper surface of .the side beams of the frame are suitably supported the journal-bearings of the shaftB, carrying the driving-wheel and the crank-shaft 0 operating the saws. On the side beams, forward of the center of the frame, are

fixed the uprights, for the purpose hereinafter set forth. The crank-shaft (J, resting in suit able journal-boxes on the side beams of the saw-frame, is provided with a cog-wheel engaging with the mastergear-wheel B, and connected in turn with the cross-heads of the saws.

The letters D D represent the guideways in which operate the cross-heads of the saws.

These guideways rest upon and are rigidly fixed to a frame, E; or they nay form a com 'ponent part thereof, and their. forward ends timber or stick. This frame is formed of side' rails and a cross-rail at the forward end of the frame.

The letters F F (see Figs. 1 and 3) represent the cross-heads ofthe saws, connected with the crank-shaft by means of the draw-bars or pitmend, and held in the guideway's by means of the side flanges of the cross-heads. ,To the forward end of these cross-headsare attached the. saws, which extend forwardin thedire'ction of:

the buck, and are ofsufficicnt lengthto operate with the stroke of the crosshcad, and soth'at the ends shall not be withdrawn from the timher or wood being sawed.

TheletterGrepresentstheuprights or standards, niortised or otherwise secured in the upper side beams of the frame, and have journalcd in their upper portion the transverse shaft H, and on the upper facing of this shaft, at both ends, are fixed the upright standards or journal-boxes, or their equivalents, for the purpose hereinafter stated and one end of the shaft H extends through its upright and has attached thereto a lever, as hereinafter described.

The letter I represents a lifting-lever journaled in the uprights on the shaft H, and it consists essentially of the handlef, the loop 7, and connecting-bar h, fastened to a staple, h, in the cross-section of the carriage-frame, substantially as seen in Fig. l of the drawings.

The letter K represents the clamping-bar, secured to the transverse shaft H inany suitable manner, and extending therefrom in the direction of the buck, where it is made of suitable shape to grasp or clamp whatever is being sawed. This clamping-bar maybe made of ing the power to the crank or other appliancefixed to the driving-shaft the sawingmay be of the loop in the lever, when the saws, with their carriage, are raised to any desired height in order to admit the timber or stick of wood to be placed in the buck. The lever is now brought down until the saws stop on the-stick and until the clamping-bar rests on the stick,

when,- by a pressure upon the lever, the desired security may be given to the stick in the buck and locked in position by the engagement of the spring-pawl with the rack. Then by applyproeeeded with. I

' Should it be desired at any time during the progress of the saws through the material to lift them from engagement therewith, the bandie-of the lifting-lever h is drawn back, which elevates the loop in the lever, which, through the instrumentality of the connecting-bar, lifts the carriage, with the saws, from the cuts, w-hile l the sticks remain securely clasped in the rests.

It will be observed that the loop of the lift,

ing-levers is soarranged that when the clamping-lever isdrawn upward it engages with the loop and lifts the carriage, with the saws, toan y desired height, where they may be retained and locked by means of the pawl or ratchet.

To the forward end of the standards of the frame'are journaledwheels, and to the rear of the frame are fixed handles, in order that the machine may be moved from place to place as desired.

A joint may be made in the saw-carriage E at or near where the staple is located, so as to let up or down one of the saws.

\Ve are aware that it is not broadly new with us to construct a drag-sawing machine with a buck for supporting a stick of wood and means for clamping the same in position during the processof! sawing; but

\Vhat we claim as our invention, and desire to secure by Letters Patent, is-

The combination, with a sawing-machine frame constructed with the uprights G and b.ucks.i,,of, a transverse shaft, H, having at oneenda lever, K with'spring-pawl 7c, the

jiix'ed ratchet l, and clamping-bar K, substantiali y asaud for the purpose set forth.

In testimony whereof we aflix our signatures in presence of witnesses.

ANDREW J. SMITH. JASPER NEWTON SMITH.

Witnesses:

B. F. WYNE, WM; H. DAVIDSON, J OHN W. BR-AZZELL.

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