US664048A

US664048A - Saw-handle.

Info

Publication number: US664048A
Application number: US468100A
Authority: US
Inventors: John Jett
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-02-09
Filing date: 1900-02-09
Publication date: 1900-12-18
Anticipated expiration: 1917-12-18

Description

No. 664,048. Patented Dec. l8, I900. J. JETT.

S A W H A N D L E (Application filed Fab. 9, 1 900.)

(No Model.)

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UNITED STATES JOHN JETT, OF SAN FRANCISCO, CALIFORNIA.

SAW.-HAN DLE.

SPEGIFIGATlION formingpart of Letters Patent No. 664,048, dated December 18, 1906.

Application filed February 9, 1900. Serial No. 4,681. Kllo model.)

To ctZZ whom it may concern:

Be it known that 1, JOHN J ETT, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented a new and Im proved Saw-Handle, of which the following is a specification, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to saw-handles such as are used on orosscut-saws, and is especially adapted for single-hand sawing.

Heretofore handles of this class consisted of a Vertical wooden pin rigidly attached to the saw, though easily detached therefrom. In using such handles the operator must move his body back and forth in unison with the saw in order to give it a long stroke, and such action requires about as much labor to move the body back and forth as it does to run the saw, and my object is to produce a saw-handle by which the saw can be given a long stroke without any uncomfortable movement of the body; and to this end my invention consists in providing a movable joint between the handle and the saw and having the movable jointsupported a short distance in front of that part of the handle which is held by the hands, so that a part of the handle will serve as a lever to give the saw a greater range of movement.

I am aware that saw-handles have'been used heretofore with a joint between the handle and the saw in which the joint is designed and used to adjust the handle at different angles with regard to the saw and in which the joint is held rigid when the saw is in operation. In such handles the joint is not adapted to serve as a movable joint when the saw is in operation, and is thus easily distinguished from my improvement in which the joint is adapted to serve as a movable joint when the saw is in operation. This feature is fully described in the foregoing specification and duly embodied in the claims.

Figure 1 is a side View of my improved handle when attached to a saw ready for use. Fig. 2 is a top view of the same, showing a horizontal section of that part of the handle which is rigidly attached to the saw on the line .serve the purpose.

1 1 of Fig. 1. Fig. 3 is a diagram to illustrate the -manner of operation.

Similar letters refer to similar parts throughout-the several views.

Figs. 1 and 2 show a handle of simple and practical construction. The handle-bar B is made of wood and occupies a vertical position in Fig. 1. The upper end 71. is held by one hand and the lower end h is held by the other hand when in use. The front or forward part of this bar is toward the saw. The handlebar passes through an eye or sleeve D, and this sleeve supports an arm A, and the front end of this arm is provided with a conical pin P at about right angles thereto. This pin may be inclined so as to bring the handle-bar in a direct line with the saw. The sleeve, arm, and pin can easily be made in a single casting. The conical pin passes through the detachable block b and is held thereto by the nut 'n, which is screwed onto the end of the pin. This nut also serves to adjust the hearing by forcing the block farther up on the pin as it becomes worn. in various forms. It swings about one-fourth of a revolution when in use, and any joint that is light and easily adjusted for wear will It is obvious that a ballbearing in various forms can be applied to this joint by any person acquainted with such work. The detachable block is of irregular form, as shown in the two views. It is adapted to receive the conical pin in a horizontal direction and is also adapted to receive the slotted bolt in a vertical direction and has a groove on its under side to receive the back of the saw-blade S. It is held rigidly to the saw by the slotted bolt, which spans the sawblade and passes up through the block and is held by the thumb-nut m at the top. Many of the rigid handles now in use are held to the saw in a similar manner.

The detachable block is so named because I prefer to have this member easily detachable from the saw-blade; but this is not absolutely necessary. It can be attached permanently to the saw, or it can be dispensed with by having the arm pivotally attached to the sawblade; but neither of these forms is preferable for obvious reasons.

This joint can be made- The handle operates in the following manner: Referring to Fig. 3, the circle L is a crosssection of the log, and the line 2 2 is the line of movement of the saw. When the saw is moved forward, the joint occupies a position near the log, as at r, and when in this position the top of the handle-bar is slightly tipped forward, as shown, and the saw is easily started backward by pulling on the lower end of the bar 7t, as it is a direct pull, and when the saw is once in motion it requires a comparatively small force to keep it in motion. Then the upper end of the handle-bar is lowered and the lower end is raised as the saw is pulled backward. When the saw is pulled back, the joint occupies a position as at 1". Then the handle-bar is partially inverted, as shown, andinlthis p0- sition the saw is easily started forward by pulling on the upper end of the bar h, and when once in motion the upper end of the bar is raised and the lower end is lowered as the saw is moved to its forward position. In this operation it will be seen that the arm which supports the joint serves as a lever to give the saw a greater range of movement, and if this arm is lengthened it will increase the length of stroke. It is obvious that the length of the arm can be made adjustable by having it in two sections, one sliding onto the other, and having them held together by bolts. It is also obvious that the handle-bar can be bent, so as to support the joint a short distance in front of that part of the handle which is held by the hands, and thus dispense with the use of a separate arm. I support the joint a little above the level of the lowerhand; but it can be above or below this position and yet work well.

a detachable block adapted to be attached to I the saw, and having the supporting-arm connected to the detachable block bya movable joint, adapted to move when the saw is in operation.

3. A saw-handle consisting of a handle-bar, a supporting-arm rigidly connected thereto, a detachable block adapted to be attached to the saw, and having the supporting-arm connected to the detachable block by a movable joint, adapted to move when the saw is in operation, and to allow the handle-bar to swing to a partially-inverted position above the back of the saw, when the saw is in a horizontal position.

at. A saw-handle consisting of a handle-bar, a supporting-arm rigidly connected thereto, a detachable block adapted to be attached to the saw, and having the supporting-arm connected to the detachable block bya movable joint, the said joint being made adjustable for wear, and adapted to move when the saw is in operation.

JOHN J ETT.

Witnesses:

A. THORS, HENRY P. TRICOU.