US702884A

US702884A - Wood-saw.

Info

Publication number: US702884A
Authority: US
Inventors: William H Pence
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-10-19
Filing date: 1900-10-19
Publication date: 1902-06-17
Anticipated expiration: 1919-06-17

Description

No. 702,884. Patented June I7, I902.

' W. H. FENCE.

WOOD SAW.

(Application filed Oct. 19, 1900.) (No Model.) 2 Sheets-Sheet l.

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Patented June 17, I902.

w. H. ence. WOOD SAW.

v ,(Applicafion filed Oct. 19, 1900. (In Model.) 2 Sheets-$heat 2.

THE "cams PETERS 00.. Pnorou'mmwnsnwsmu. ov c4 UNITED STATES PATENT OFFICE.

\VILLIAM H. PENOE, OF FAIRFIELD, IOWA.

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SPECIFICATION forming part of Letters Patent N 0. 702,884, dated June 17, 1902.

Application filed October 19, 1900. Serial No- 33,610. (No model.) I

To all whom it many concern.- I

Be it known that I, WILLIAM H. PENCE, a citizen of the United States, residing at Fairfield, in the county of Jefferson and State of Iowa, have invented a new and useful Improvement in lVood-Saws, of which the following is a specification.

My invention relates to circular crosscutsaws for cutting wood into short pieces from poles or cord-wood; and it consists of certain peculiarities of construction and combination of parts hereinafter described, and particularly set forth in the claims.

In the drawings, Figure 1 is the perspective;

Fig. 2 is a sectional elevation drawn cross-v wise through the working parts of the sawframe. Fig. 3 is a sectional elevation drawn lengthwise through the saw-frame and showing the saw withdrawn from cutting. Fig. 4

rocking frame B is rigidly secured, as particularly shown in Fig. 2. One end of the shaft F projects out beyond the saw-frame and is bent so as to stand below the inward portion of the shaft, but on a line parallel with it. The idler O is mounted upon this depressed end of the shaft F, so as to main tain an even tension of the belt'T, as will be hereinafter explained.

H is a bail or handle secured to the upper end of the rocking frame B and running clear across from one side to the other above the mandrel O, by means of which the operator may push the saw forward to cut the wood and also draw it back again for another operation.

On a rear sill of the saw-frame is attached a bracket provided with a pivot I, and to this a foot-lever J is secured. Another bracket or arm L is attached to a cross-bar U of the rocking frame 13, and the end of this arm or bracket is connected to the inner end of the foot-lever by means of the connecting-bar K. By pressing on the outer end of the foot-lever J the rocking frame B will be thrown forward,

ward.

thus assisting the hand or acting independent of it in forcing the saw into the wood. It will be seen that the foot-lever J is connected to the rocking frame B, so that its 0perative movement will be contrary to that of the rocking frame B, to which the hand-bail H is attached, and by this means the power that is expended on the one will have a tendency to react on the other, thus adding greatly to the ease of operating the saw.

On an upper cross-bar Va coiled spring M is attached, and to the free end of this spring a rod or chain N is secured, and the free end of the chain is secured to a suitable part of the saw-frame. The length of the chain N is adjusted so that when the rocking frame B moves forward past the center the spring M will begin to tighten and to exert its power on the frame 13 as it continues to move fortVhen the pressure of the hand is removedfrom the bail H or the foot from the lever J, or both, the spring will draw the frame B back to the center, when it will of its own momentum move back to its original position, as shown in Fig. 3: By this means the foot is made to assist the hand in pushing thesaw forward and the spring to assist the hand in drawing the saw back, or the hand may not be used at all, and the foot and the spring will control the movement of the saw, as desired.

P is a balance-wheel which may be used to maintain the momentum of the saw in the usual manner.

Q is an inclosed hood having parallel sides and one open end. This hood is secured to the saw-frame by hooks X or other removable 'fastenings and is used to protect the operator from the saw, as well as to protect the saw and to act as abearing for the wood being cut.

R is the saw-table,which is provided with shoulders \V to limit the movement of the rocking frame 13, and S represents the stick of wood to be cut.

T is the belt which drives the saw. It passes over the idlers O and D and around the sawmandrel pulley E. As the frame B moves forward, the idler 0 being mounted on the end of the shaftF below the pivot of the frame B it will be thrown back a little, and when the frame is drawn back the idler C will be thrown forward a little. By this means the tension on the belt T will always be the same and will not be made alternately tight and slack, as it would be were the idler C and the frame B pivoted upon the same line.

It is apparent that variations may be made in the details of construction without departing from the spirit of my invention. Therefore I do not confine myself to the exact construction shown; but

\Vhat I claim as new, and desire to secure by Letters Patent, is-

1. In Wood-saws, the combination of a main frame, arocking frame hinged at its lower end to said main frame, and at its upper end carrying a saw-mandrel, a hand-bail secured to the upper end of the rocking frame and passing across from one side to the other above said mandrel, and a foot-lever to assist in moving said rocking frame; the connection of said hand-bail and foot-lever being such that the operative movement of the one will be contrary to that of the other, whereby the reaction of the power to operate the one will assist in operating the other.

2. In wood-saws, the combination of a main frame, a rocking frame pivoted at its lower end to said main frame and having a handbail at its upper end and a cross-bar near its lower end, a horizontally-projecting arm secured to said cross-bar a foot-lever pivoted to the lower end of the main frame and a bar pivotally connecting together the free end of the arm and the inner end of the foot-lever, the operative movements of the hand-bail and foot-leverbein g contrary to each other,whereby the reaction of the power to operate the one will assist in operating the other,substantially as described.

3. In wood-saws, the combination of a main frame a rocking frame hinged at its lower end to said main frame, and having a hand-bail at its upper end to give it movement in both directions, a foot-lever secured to said rocking frame to give it movement in one direction and a spring to give it movement in the other direction, the spring being adapted to assist the return movement of the hand-bail, and the reaction of the power applied to the footlever to assist the forward movement of said bail, substantially as described.

4:. The combination of a main frame,a rocking frame pivoted at its lower end to said main frame and having a cross-bar near its lower end, a horizontally-projecting arm secured to said cross-bar, a foot-lever pivoted to the lower part of the main frame, and a connecting-bar, hinged at one end to the inner end of said foot-lever, and at the other end to the end of said arm, substantially as described.

WILLIAM H. FENCE;

\Vitnesses:

FRANK H. HIGBY, A.: D. LONG.