US100330A - Improvement in gr - Google Patents

Description

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SEYMOUR ROGERS, OF PITTSBURG, PENNSYLVANIA.

Leners Patent N 100,330, dated Match 1, 1870.

IMIPROVIEIIID@EN'1 IN GRAPPLES.

The Schedule ieferred to in these Letters Patent and o! the same.

fi'To/all whom it may concern.-

Be it known that I, SEYMOUR Roenes, of the city of Pittsburg, in the county of Allegheny, and State of Pennsylvania, have invented a new and useful Improvement in Grapples; and I do hereby declare ythe following to be fa full, clear, and exact description of the grapple with its jaws distended.

Like letters of reference indicat'e like parts in each. l

' ln the use ot' horse liay-f'orlts'it is desirable to have I some device by which the hoisting pulleys can easily uses. v To enable others skilled in the art to make and use my invention I will Iproceed to describe its construetion and mode of operation.

The grapple consists of two hooks a, with-their shank ends pivoted or hinged to each other as at a;

The points c are curved toward each other, and if need be, are slightly re-entlnnt, or in other words, while bending toward each other they may also curve toward the pivoting point a', sufficiently so thatwheu attached to a rafter, 11or other supportoverhead, they will take a rm and secure bite on such latter or other suppoit under the operation of the"downwardly operating weight ot the pulley blocks attached to the eye d of the grapple, or ot' the load to he hoisted, or of both.

Freni any suitable part `of the hooks a, preferably about midway between the bitingpoints c and the pivoting point a, I make bars e, extending inwardly toward each other to such distance that at the greatest desired distension of' the hooks a, as in tig. 2, the inner ends e' of such bars shall overlap each other,

and thence I lead each such bar back to its own hook and connect them xedly at or a little outside of the pivoting point a'. Such returning bars s have slots s',

and the bars s a're so arranged, with reference to each other and with reference tol the hooks a, that the slots s' shallcross or intersect each other at all adjustments Ybetween the greatest and least desired dstensions of the hooks a. l

The carrying-arm f, having an eye, d, or' hook, or other equivalent at its lower end to which to attach the pulley-block, is slotted or bifurcated, so that one arm of the bifurcation shall pass up on each side of hy a pin or rivet, i, which passes through both'the slots s. f l

so that by the raising of the arm f the pin t', acting in the slots s', will cause the hooks a to berdistended, and vice fversa..

By the weight of the pulley, or of the .load attached thereto, or of any downwardly-acting force appliedto the ann f,`t.he points c ofthe hooks a will be caused to take a. secure bite on the raft'er b, and the greater the weight hung to orhoisted by the arm f the more vsecure thehooks a will engage the rafter b or other support to which they are-attached.

It is obvious that the grapple described may be removed from one support or point of support to another, which, in the hurry of haying, is a desirable end.- l

I am aware that grapplingdcvic'es have been made in which the weight operated in c'losing the jaws on inclined slots 'arranged outside the pivoting point of the jaws, and hence I do not claim, broadly, operating the jaws or hooks by means of the weight to be raised; but What I claim as my invention, and desire to secure by LettersPatent, is

51u the construction of agrapple, the inclined crossing orvintersecting slots s', arranged inside the hooks and between the hinging point and the bitingpoint 'of the hooks, substantially as and for the purposes described, v

In testimony whereof, I,.the said SEYMOUR ROGERS, have hereunto set my hand,

' SEYMOUR ROGERS.

Witnesses:

GEO. J. ROWLEY, ItoBT. HERREN.

the bars s, and the two are joined at their uppenend rIhe slots s', it will be observed, cross each other,-

easily and quickly pnt up, and as easily4 and quickly

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