US872252A - Clamp. - Google Patents

Description

PATENTBD Nov. 26, 1907. M. A; REARE.

CLAMP. .APPLIOA11'ION FILED mm: 13, 1001.

I W/ TNE SSE S ATTOHNE rs THE Mamas PETERS :04, wAsnmomu, u. c.

MORLEY ALFRED REARE, OF LOS ANGELES, CALIFORNIA.

CLAMP.

Specification of Letters Patent.

Patented. Nov. 26, 1907.

A li ation fil d June 13.1907. $erial No. 378.799.-

T 0 all whom it may concern:

Be it known that I, MORLEY ALFRED REARE, a citizen of the United States, and a resident of Los Angeles, in the county of Los Angeles and State of California, have invented a new and Improved Clamp, of which the following is a full, clear, and exact description.

This invention is an improvement in clamps, more especially designed for-clamping two strips of material together in obtaining dimensions. .It is frequently necessary for carpenters and others to make extended measurements which cannot .be conveniently done directly with a rule, and for this purpose two sticks are often employed by overlappingtheir inner ends to an extent sufficient to bring their outer ends in register with the points between which the distance is to be determined. This method of making measurements is found to beentirely satisfactory except in so far as holding the overlapping ends of the sticks or strips properly together, is concerned. This difficulty is overcome by the use of my improved clamp, one embodiment of which is hereinafter disclosed.

Reference is to be had to the accompanying drawings forming a part of this specifi cation, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of the clamp, illustrating the manner in which the overlapping ends of two strips are held in making a measurement; Fig. 2 is a plan of the clamp, and Fi 3 is a longitudinal, vertical section on the Tine 3-3 of Fig. 2, looking in the direction of the arrow.

The clamp in its preferred construction is composed of two side- bars 10 and 10, preferably in the nature of angle-iron and having upwardly-projecting and opposed jaws 11 arranged. at opposite ends, said jaws in that form of my invention shown, being serrated on their inner faces and made integral with their respective side-bars. Adjacent to the jaws 11 the inner faces of the side-bars are formed with bosses or other thickened portions 12, which afford sufficient metal at these points on the bar 10 for threadedly receiving guide-rods 13, and on the bar 10 to provide extended bearings for said rods on which the bar 10 is slidably mounted. On the inner faces of the bars 10 and 10 at the center thereof, are formed bosses 12 corresponding to the bosses 12, this being for the purpose of receiving a centrally-arranged operating screw 14 which is threaded or otherwise affixed to the bar 10 and is slidable in the bar 10. A thumb-nut 15 in threaded engagement with the screw 14 at the outside of the bar 10, is for the purpose of forcing the jaws 11 together, as is obvious.

The bar 10 is constructed with a lug 16 arranged over the boss 12, in which is threaded a screw 17 carrying a thumb-nut 18, which is preferably made concave on its under face 1n order that it will bind only at its outer edge.

In clampin the overlapping ends of two strips or sticks in making measurements, they are placed between the clamping jaws, and the thumb-nut 18 is tightened against the top edge of the adjacent strip; the other strip being slid longitudinally until the ends of both strips are in register with the points between which the distance is to be determined. Before the strips are unclamped they are laid upon the base board, picture molding or other material to be cut and the desired length measured off.

The invention will be found especially useful in measuring rooms as in making measurementsv for picture-molding, base-boards, etc. and in numerous other relations.

It is apparent that changes within the scope of the invention may be made to the clamp hereinbefore described and illustrated in the drawing, without departing from the nature of the invention as defined in the annexed claims.

Having thus described my invention 1 claim as new and desire to secure by Letters Patent:

1. A clamp comprising angle-iron sidebars having integral, upwardly-projecting jaws at opposite ends serrated on their inner faces, bosses formed on the inner faces of said bars adjacent to said jaws, guide-rods threaded into said bosses of one of said bars, the other of said b'ars being slidable upon said rod, centrally-arranged bosses formed on the inner faces of said bars, an operating screw threaded into one of said centrallyarranged bosses and slidable through the other, a thumb-nut carried by said screw for forcing said jaws together, and a screw projecting upwardly from the center of one of said bars and carrying a thumb-nut for clamping the material held between said jaws at right angles thereto.

2.v A clamp comprising side-bars having upwardly-projecting jaws at opposed ends, means for drawing said jaws together, and means for clamping the material held by said jaws at right angles to the clamping action of the jaws.

-3. A clamp comprising side-bars having upwardly-projecting jaws at opposite ends, guide-rods connecting said bars together adjacent to said jaws, a centrally-arrangedupwardly-projecting jaws at o posite ends, guiding means connecting said ars together, means intermediate said guiding means for forcing the jaws together, and means for clamping the material held by the jaws at right angles to the clamping action of said aws.

6. A clamp comprising side-bars having upwardly-projecting jaws at opposite ends, guide-rods connecting said bars together near each end thereof, an operating screw carrying a thumb-nut for forcing the jaws together intermediate said guide-rods, and

an upwardly-projecting screw carried by one 7 of said bars having a thumb-nut for clamping the material held by the jaws, at right angles to the clam ing action of said jaws.

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

MORLEY ALFRED REARE. Witnesses:

A. G. KUoK, L. H. DONALDSON.

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