US476831A - Wood-sawing machine - Google Patents

Description

(No Model.)

J. SHANAHAN.

Woon SAWING MACHINE.

No. 476,831. Patented June 14, 1892.'

UNITED STATES PATENT OFFICE.

JAMEs SIIANAIIAN, oF roar GIBSON, MISSISSIPPI.

WOOD-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 476,831, dated June 14, 1892.

Application filed February 18, 1892. Serial No. 422,012. (No model.)

To all whom, t may concern.-

Be it known that I, JAMES SIIANAHAN, a citizen of the United States, residing at Port Gibson, in the county of Claiborne and State of l\Iississippi,have invented certain new and useful Improvements in Wood-Sawing Machines; and I do hereby 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.

'This invention relates to machines for sawing Wood into short pieces for burning in either stoves or fireplaces; and its object is to adapt a machine for sawing Wood and to be moved around like a Wheelbarrow; second, to provide means for raising the saw and holding it out of the way While the wood is being placed in position to be sawed and for pressing the saw down upon the wood continually while the wood is being cut, means for adapting the machine to hold sticks of wood of irregular shape, both lineally and as to cross-section, and other minor points', as will be more fully hereinafter described, reference being had to the accompanying drawings, in which- Figure I is a plan view of the same. Fig. II is a side elevation ot' my Wood-sawing machine, certain parts being broken away to expose the interior. Fig. III is a detail View partly in longitudinal vertical section.

5 represents the bed portion mounted upon legs G and a wheel 7 very much in the form of a common wheelbarrow.

S represent-s the frame-work rigidly fixed upon the bed 5 and provided with an archshaped opening 9, through which the wood may be inserted either in single sticks or bundles.

10 represents a sash fitted to slide across the bed at the bottom of the arohway.

ll represents a series of headblocks, each provided with a series of teeth l2, which vary in their lengths, those teeth which are at the end of the blocks and which are to reach up onto the sides of the Wood being longer than those in the middle, so that the points of all the teeth of cach block, When taken collectively, form a notch into which one or more sticks may be laid. These head-blocks are located at some distance apart upon the sash to admit sticks of wood with all their native irregularities of form, and they hold the wood with more certainty than a straight trough would do.

13 is a yoke mounted upon a screw 14, which passes down through the top of an arch. 15, that is fixed to the sash IO, and by means of which a bundle ot sticks of wood may be firmly pressed together upon the teeth l2, so that the sticks cannot roll or slide about by the action ot the saw, thus preventing the saw from being cramped in its Work.

The wood should be clamped together when the sash is drawn fa r back, and atterone length of wood has been sawed ott the sash, with the wood and the arch 15 and yoke 13, may be bodily slid forward the distance required for another length of wood to be sawed. The sash may be proportioned in length to hold fourfoot oord-Wood or wood of any other length, and the teeth l2 will support the wood above and free from the sash and head-block, So that the saw may cut through the wood held in the toothed notches Without coming in contactwith the head-blocks or sash. To further insure this result, the saw I6 is shaped with a projection 17 below the line of its teeth and near its end, which projection will slide upon the bed 5, as shown in dotted lines 1S, and prevent the saw-teeth from reaching the said head-blocks or Sash.

19 is a lever pivoted to the frame at 2O and connected with a crank 2l of the drive-shaft 22 by means of a pitman 23. In the lower end of the lever I9 the saw 1G is hung upon a pivot 24C. y

25 is a rod pivotally connected with the sa\vshank at a point 2G to the rear of the pivot 2-1, whereby vertical movement of the rod will cause the opposite vertical movement of the saw-blade. The rod 25 passes down through. a hole in the lever, through which it plays freely along that region corresponding to the rise and fall ot the saw in service; but at 27 the rod increases in thickness, Wedgeshaped, so that it will stick in the lever 19 when pushed down so as to raise the saw to its upper limit, thus holding the saw raised out of the way for wood to be inserted.

28 is a lever pivoted to the rod`25 and rest ing freely upon a shoulder 30 of the lever 19 as a fulcrum, and 29 is a weight upon lever 28,

IOO

constantly acting to pry upon the shank of the saw by means of the rod to hold the blade of the saw down to its work.

31 is a weight removably attached to the forward end of the saw, both to serve as an auxiliary weight to hold the saw down to its work and to keep the saw from vibrating and trembling in Service. Both ends of the saw are alike, so that either may serve as the shank or the forward end.

32 represents a hand-crank, whereby the D shaft 22 may be revolved to operate the saw,

and 33 isa balance-wheel upon shaft 22, to give a firm steady motion. This wheel is provided with heavy segments 34 at right angles to the han d-crank, to balance and equalize the action of irregular impulses applied upon the crank. The weight 29 is rounded to serve as a handle, and it is located nearly over the crank-shaft in order that the operator may bear thereon when it is desirable to force the saw harder down, or he may lift thereon to ease the pressure of the saw in starting or at other times when at work. .He may also pry the rod 25 loose by a light blow on the lever 2S when the lever has been made fast by its wedge 27 to hold the saw up out of work.

Having thus fully described my invention, what I believe to be new, and desire to secure by Letters Patent, is the following:

l. The combination, in a wood-sawing machine, of a frame, a sash fitted to slide therein, an arch above and secured at its ends to the sash, a yoke hung to the arch by a screw, and means upon the sash for holding wood in opposition to the said yoke, substantially as described.

2. The combination, in a Wood-sawing machine, of a frame, means for holding wood thereon, a lever pivoted in a general vertical position upon the frame, a saw pivotally hung at one end of the said lever, and a rod passing through the said lever and pivotally connected at one end with the shank of the saw to the rearof the han ger-pivot thereof, and pivotally connected near its other end with a second lever, this second lever being mounted to rest freely upon shoulders ofthe first-named lever, substantially as described.

3. The combination, in a wood-sawing machine, 'of a frame, a lever pivoted thereto, a saw pivotally hung upon the lever, and a rod liftingq freely in the lever and pivotally connected with the shank of the saw to the rear of the lever connected therewith, the said rod havinga a wedging portion to engage the lever, wherebythcsaw may be held suspended,sub stantially as described.

In testimony whereof I afx my signaturein presence of two witnesses.

JAMES QHANAHAN. lVitnesses:

BEN R. LEVY, MosE WELsoHE.

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