US399370A - Pkuning implement - Google Patents

Description

(No Model.)

A. BOHN.

PRUNING IMPLBMBNT.

No. 399,370. Patented Mar. l2, 1889.

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UNTTED STATES PATENT OFFICE.

ADAM BOIIN, OF MERCER, PENNSYLVANTA.

PRUNINGI SPECFCATION forming part of Letters MPLEMENT.,

Patent No. 399,370, dated March 12, 1889.

.To @ZZ whom it 721,611/ concern.'

lio it known that l, ADAM BUEN, a citizen ot' the United States, resiffling at Mercer, county of Mercer, and State of Pennsylvania, have invented certain new and useful Improvenients in Pruning Implements, of which the following is a specification.

My invention relates to that class of pruning implements in which a curved knifeio edged cutting-jaw is pivoted to a curved jaw forming a seat for the branch, twig, or other object to be severed, and in which the jaws are provided with haiulles and pivoted together, so as to open and close like ordinary shears.

The objecty of 'my inventitni is to form the jaws and their handles in the simplest and .most inexpensive way, and to provide improved means for limiting the movement of 2o the jaws and the handles, so that they shall not move so far in one direction as to squeeze the hands of' the operator, nor so far in the opposite direction as to throw the jaws out of their proper relative working position.

'lo this cnd'my invention consists in forming the principal parts ol' the implement in three parts, the eutting-jaw and its handle being formed of' a single piece of metal, and the opposite jaw and its handle also of a sin- 3@ glepieco of metal adapted to lie .flat on the cutting-jaw and to he pivoted directly thereto hy a pivot-pin, and in providing` each handle .near the junction with its j aw with an adjustahle j'e lug or block projecting in line with the pivot-pin, and provided with means for firmly securing it in its adj usted position, so as to permit the jaws to move more or less to accommodate the wear on the cutting-jaw incident to sharpening.

ln the act-.ompanying drawings,'Figure l is a side view ol.' the inlplenient; Eig. il, a detail `view o t` the gage-block; and Fig. 3 is a sectionv on the line il 2i of Eig. l, showing the manner ot' attaching the block to theimpleinont.

The cutting-jaw u is made of steel, in one piece with the handle '(1. One side of the jaw and handle is made straight: an d flat,adapted to rest against the straight fiat side of the jaw c and its handle d. The jaw a and the 5o handle l) are pivoted to the jaw c and handle at c hy a pivot-pin, f.

The cutting-jaw cz is provided with a com ver( curved cutting-edge, g, and inclines on its outer side Vfrom the edge gto its rear edge, 71. The jaw c is curved to forma concave re cess, i, which forms a seat for the twig, branch, or other object to he severed. The cuttingedge g moves past the recess l', close to the side of the jaw c.

On the handles b and d, near the pivot f, are arranged blocks 1j 7o, which project from the handles in opposite directions in line with the pivot-pin, so that the block j on the handle l) will bear against the side of the handle d when the jaws are closed. The block lo is similarly arranged on the handle d, to bear against the handle l). 'ly this means the inward movement of the handles is limited, so that they will not come so close together as to squeeze the hands of the operator, and the jaws are prevented from moving past each other too far.

The blocks j and 7.' are preferably formed as shown in Fig. i. The block itself is reetangular, and is provided on its under side with a shank, I, which is arranged eccentrically 1T. e., the edge of the block is close to the shank on one side. On the next side itis a little farther away. Un the third side it is still farther away, and on the fourth side the distance between the shank and the edge of the block is greatest'.

The shanks l are seated in holes lm in the handles and are held in place by set-screws n, extending into the sides of the handles and hearing against the shanks. As the cuttingedge of the jaw a is worn away, it becomes necessary to adjust the blocks, so that the cutting-edge g may move a sufficient distance past the curved seat i. This is done hv turning the lllocks to change the sides lying adjacent to the opposite edges of the handles. rlhe sides having dillerent distances from the shanks, the proper ones may he selected to properly adjust the movement ot' the jaws and their handles.

The block on the handle l; limits the outward movement of the jaws and handles, as when the jaws are fully open the block e j hears again-st the hack of the jaw f'.

The cutting-jaw may he sharpened without separating it from the jaw c, as the inclined IOO dle, the opposite jaw formed with a concave seat and a handle, the pivot-pi11 connecting the two jaws, the gage-blocks, their eccentric Shanks seated in sockets in the handles and adjustable therein, and the setscrews engaging with the Shanks for firmly securin1 the shanks in their sockets.

In testimony whereof I have hereunto subscribed niy naine.

ADAM BOI-IN.

Titnessesz S. H. MILLER, J. D. EMERY.

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