US334574A

US334574A - dresser

Info

Publication number: US334574A
Authority: US
Publication date: 1886-01-19
Anticipated expiration: 1903-01-19

Description

(ModeL) 2 Shets-Sheet 1.

. S. P. DRESSER,

WOOD SA'WING MACHINE.

Patented Jan. 19,1886;

I IN'VENTOR ATTORNEYS.

(ModeL) 2 sheets-sheet 2.

S. P DRESSER.

v W001) SAWING MACHINE, No. 334,574. Patented Jan. 19, 1886.

ATTORNEYS. v

UNITED STATES PATENT OFFICE.

SAMUEL P. DRESSER, OF PLEASANT MOUNT, MISSOURI.

WOOD-SAWINGI MACHINE.

SPECIFICATION forming part of Letters Patent No. 334,574, dated January 19, 1886.

Application filed June 2, 1895. Serial No. 167,407. (Model) 7 To all whom it may concern:

Be it known that I, SAMUEL P. DRESSER, of Pleasant Mount, Miller county, Missouri, have invented a' new and Improved Vood- Sawing Machine, ofwhich the following is a full. clear, and exact description.

The object of my invention is to provide a new and improved wood sawing machine which can be operated by one or two persons, runs easy, and is simple in construction. The invention consist-s in the construction and combination of parts and details, as will be fully set forth and described hereinafter, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a longitudinal view of my improved wood-sawing machine. Fig. 2 is a plan view of the same. Fig. 3 is a cross-sectional elevation of the same on the line .70 :10, Fig. 1. Fig. 4 is a cross-sectional elevation on the line yy, Fig. 1. Fig. MS a detail plan view of the end of the saw-holder.

The shaft A is journaled transversely in an upright frame, A, and is provided at one end with a crank, A and at the opposite end .with a cog-wheel, A having a crank-handle, A. The cog-wheel A engages with a pinion, B, on the outer end of a shaft, B, journaled in the frame A, and provided on its inner end with a crank, B". A fly-wheel, O, is mounted on the shaft B. A pitman, D, is pivoted to the crank B and the front end of the pitman is pivoted by a pin, D, in the forked piece E on the butt-end of the saw-blade F. The piece E is the shank of the saw, being rigidly fixed tothe blade as a base of attachment for the lever Hand pitman D and the spring P. This piece E might be dispensed with and the sawblade be attached directly to the lever H, and the pitman D and the spring P be pivoted to the saw-blade, as it now is to the saw-shank. The pin D also passes through an aperture in the lower end ofalever, H, pivoted at its upper end on a standard, H, on' one of the two bars J, projecting from the upright frame A. The lever H is composed of two longitudinally-slotted overlapping pieces, which can be locked together by means of a bolt, K, and

wing-nut K. By lengthening or shortening the lever H the saw can be raised or lowered, accordingto the diameter of the log, beam, &c., to be sawed. The bars J are united near the front ends by a cross-piece, L, from the bottom of which a transverse slit or slot, L, extends upward and serves to receive the saw-blade F. Abinding-screw, M, is screwed through one bar J and through one end of the cross-piece, and is of such length that its inner end can bind on the saw-blade F in the slit L.' A screw, N, having a head, N', is screwed through the end of one bar J and into the log 0, for the purpose of holding the free ends of the said bars on the log. A strong spring-band, P, has one end secured on a pin projecting from the side of the piece E at the butt-end of the saw, and the other or rear end of the spring is secured on a flat bar, Q, pivoted at its rear end to the side of the'pitman D, and having a slot, Q, near its front end, through which a pin or bolt, Q

projects from the pitman. A thumb-screw, B, is held above the bar Q in a laterally-projecting lug, S, on the pitman D. One or more hooks or clamping-dogs, U, are pivoted to one or both bars J, to hold thefront ends of the same in place on the log 0. The upright frame A is secured on a base, G.

The operation is as follows: The saw-blade F is held in the cross-piece Lby the screw M, and the ends of the bars J are placed on the log or beam 0 and held in place by the screw N and the hooks or dogs U. The bar H is lengthened or shortened according to the thickness or diameter of the beam or log.

Thenthe saw-blade is released by loosening the screw M, and the saw is rocked forward or back to cut a kerf in the 1.0g. Then the machine is operated by revolvingthe shaft A either by means of the crank A or handle A or both. The saw is reciprocated rapidly, and makes a clean straight cut. The spring I? presses the saw-blade downward on the bottom of the kerf, and the pressure of the saw on the bottom of the kerf can be adjusted by means of the screw R, as by turning the screw B down it exerts a greater pressure on the spring, which in turn exerts a greater pressure on the blade. After the blade has cut through the log it is raised and held by the screw M in the cross-piece L, so as not to interfere with shifting the machine. The pressure of the saw on the log is greatest when the saw is drawn toward the operator, as the pitman and saw are at the greatest angle at that time, which causes the spring to press harder and the saw to cut deeper.

Having thus described my invention, I claim as new and desire to secn re by Letters Patent 1. In a sawing-machine, the eombination, with the upright frame A and the bars J, of a reciprocating saw-blade, gearing and levers for operating it, and a cross-piece uniting the bars J, and having a binding-screw for holding the blade, substantially as herein shown and described.

2. In a sawingmachine, the combination, with the upright frame A and the bars J, of a reciprocating saw-blade, gearing and levers for operating it, the cross-piece L, uniting the bars I, and having a slot, L, and of the screw M in the cross-piece, substantially as herein shown and described.

3. In a sawing-machine, the combination of the pitman D, the saw pivoted at itsshank thereto, the lever Q, pivoted to the side of the pitman, the spring P, secured to the said lever and pivoted to the saw-shank, the lug S on the pitman, and the screw R, passing through the said lug and bearing against the spring between its points of attachment to the pit man and said shank, substantially as shown and described.

4. In a sawing-machine, the combination of the pitnian D, the saw-blade F, pivoted at its shank thereto, the lever Q, pivoted to the side of the pitman and having a slot, Q, the pin Q projecting from the pitman through the said slot, the lug S on the pitman, the screw R in the same, and the spring I, secured to the lever Q and to the saw-shank, substantially as shown and described.

5. In a sawing-machine, the combination, with the standard H and the extensible lever H, pivoted to the standard H, of the pitman I), means for operating the same, the forked piece E, carrying the saw F, and the spring I, secured to the pitman and to the forkedpiece, the said pitman and forked piece being pivoted to the lower end of the lever H by the same bolt, substantially herein shown and described.

SAMUEL P. DRESSER.

\Vitnesscs:

It. H. FRANKLIN, H. N. COMPTON.