US801218A - Saw-clamp. - Google Patents

Description

PATENTED OCT. 10, 1905.

M, D. CONVERSE. SAW CLAMP.

APPLICATION FILED APR.'7,1905,

MASCHIL CONVERSE, OF NEWVARK, NEl/V JERSEY.

SAW-CLAMP.

Specification of Letters Patent.

Patented Oct. 10, 1905.

Application filed April '7, 1905. Serial No. 254,385.

1b (1, 1070mm it may concern:

Be it known that I, IVIASOHIL D. CONVERSE, a citizen of the United States, residing-at Newark, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Saw-Clamps, of which the following is a specification.

My invention relates to saw-clamps, and more particularly to that type of which Letters Patent No. 716,385, dated December 23, 1902, and issued to me, is an example.

My invention is comprised in an improved and simplified means for clamping the saw and also in improved means for securing the sawclamp to the bench; and the objects of my invention are to reduce the cost of manufacture and improve the efficiency and convenience of such tools, all which will hereinafter be more fully shown and claimed.

In the drawings, Figures 1 and 2 are plan views of the two principal parts of my invention separated; Fig. 3, a middle cross-sectional view on line :0 m of Figs. 1 and 2, showing working positions of the parts; Fig. 4, a cross-sectional view on 3 y of the same figures, showing another feature of my invention.

Like letters indicate corresponding parts throughout the several figures.

A is the frame, having at either end an arch C (J, to which is joined, preferably integrally, the rigid clamp-jaw D at each end.

The frame A is provided with a bracket E and is pierced also, preferably adjacent either end, by holes a a, (see Fig. 4,) each being surrounded by a cup Z) Z) on the upper side of the frame A, into which a plug of elastic rubber c c is forced. (See Figs. 1 and 4.) Through the axial center of these plugs of rubber nails (Z (Z are driven, the rubber serving to keep the nails from being lost when the saw-clamp is carried about and acting also as a cushion when the same are driven on down through the holes a a into the bench or wood IV to secure the saw clamp thereto. (See Fig. 4.)

Centrally on the upper side of the bracket E- there is formed a vertically-projecting post 6, with the side f facing the jaw D made nearly perpendicular.

G is the other clamp-jaw, which is made slightly shorter longitudinally than the distance by measure between the two inner vertical margins 0 0 of the arches C (J, so that it may freely move between the latter without necessarily contacting therewith, and which is constructed with a rearwardly-projectin g part 9, preferably centrally located, the outer end of which is slotted vertically at it and at such a distance from the face 2' of the jaw G that when a saw is in place, as shown, and the slotted part 9 is forced down from the position shown by dotted lines in Fig. 3 and so that-the post comes up through the slot it the face 71 of jaw G will by reason of wedging contact between the point of the incline m and the face f of the vertical post thereby be forced forward against the saw 1' and the latter in turn against the face Z of the rigid jaw D, and thus instantly clamp the saw jsecurely against the jaw D. (In the drawings the surface of the slot h at m is shown to have exaggerated angle of inclination. This may of course be constructed so as to have a suitable slant.) The saw is of course instantly released by forcing the outer end of projecting part 9 up ward, so as to disengage the edge of this inclined surface m with the face f of the post 6.

The saw-clamp can be readily removed from the bench IN by inserting a chisel, screwdriver, or similar thing under the bracket at 70, Fig. 4, and prying the nails (Z (Z out of the wood. Screws may be used in place of the nails.

It will be readily understood that in the manufacture of my present improved sawclamp the parts D and G in the form shown may each be cast to substantially finished lines, so as to obviate any expensive fitting or machining.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a saw-clamp of the type described, a frame joined to a jaw by arches at each end, a bracket with post thereon with its vertical side facing said jaw, and means for securing the saw-clamp to a bench, in combination with a second jaw with projecting part adapted to jam with said post in operation.

2. In a saw-clamp a clamping mechanism and a frame in combination with cups provided with orifices for nails and plugged with rubber adapted to be pierced by secu ring-nails.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. I

MASCHIL D. CONVERSE.

Witnesses:

IVARREN WV. WHITNEY, EDWARD J. SMITH.

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