US93217A - Improvement in flooring-clamp - Google Patents

Description

.. Witnesses: A Inventor:

Adiluted gieten @wat @Wim Letters Patent No. 93,217, dated August 3, 1869.

IMPRovEMnNT IN FLOORINGLCLAMP.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Beit known that I, DAVID NEVIN, of Boulder Oity, Boulder county, Territory of Colorado, have invented a new and improved Floorin g-Clam p and I do hereby declare that the following is a full, clear, and exact ldescription thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing, forming part of this specification.

'lhis invention relates toimprovements in clampsV The lower bracket is provided with a set-screw, D,V

for taking into the Wood, to prevent slipping, or a stud will answer as well.

lThe upper bracket supports a hinged' tongue or guard, E, which may he raised to permit theapplioation ot the said stock to the joists, and 'swings down by the side of the joists to prevent the -stock from falling laterally.

Near the top of the said stock a cranked lever, F,

is pivoted, having a sharp heel, G, for taking into the top of the joists to prevent slipping.

It is also provided with a segmental rack, H, a short distance above the heel and projectingover the stock A.

L represents a clamping-lever, pivoted adjustably atits lower end to the stock A, and provided with a pawl, K, to engage with the said rack.

For operation, a clamping-block, L, is laid on the joists in front of the edge of the hoard-to bc clamped and nailed, and the stock A placed on a joist in front of the said block. The sharpened heel of the lever F is then forced into the joist by pulling the set-screw or stud D in the bottom ofthe `)'oist. Theuthe clamp; ing-lever is pressed forward against the block and has a powerful clamping action thereon.

lVhen suicientstrain has been appliedfthc pawl K may be engaged with'` the notched bar H, to hold the lever I until the board is nailed.

Having thus described my invention,

What I claim as new, and desire to secure by Let The fioor'ingmlalnp, constructed as described, of the right-angular stock A B C, having' the set-screw D add

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