US112392A - Improvement in pruning-shears - Google Patents

Description

N. PETERS, PHOTO-LITHOGRAPHER. WASHINGTON, D

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FRANK sMrLnYgoF BATAVIA, NEW YORK.

1 I `I retters Patent No. 112,392, dated'Mareh 7, 1871.

` IMPRovx-:MENT I N PRuNlNe-SHEARS.

Q *The Schedule referred to in these Letters Patent and making part of the saine.

I, FRANK SMILEY, of Batavia, in the county of -Genesee and State of .'N ew York, have invented. eertain Improvements in Pruning-Shears, of which the tbllowingisa specification. v l* "My invention consists` in the arrangement, with the knife or blade and jaw of pruning-shears, of a cutterplate, attached to onesideof `the jaw or bearing, with `its cutting-edge arrangedbaek of the face of the bearing, 'for the purpose oi" insuring a clean `slanting eut, sul'lstantially as hereinafter set-forth.

i In the accompanying drawing- `Figure I is a view, in elevation, of my improved im-v plement. l

Figure II is a Gross-'section tlnjough` the jaws, 'in line a;x, lig. l. i

figures. l y

l A is theerooked jaw, and 1 y l.

l A', the handlethereof, oQrdma'ry eonstruetion.

l B, the Vknife or blade, with.` correspondingly-eurved Y B', the handle, the two jaws being pivoted togetherl -at e in the usual manner.l l

D is the enttingplate,;secured by rivets e e, or other- -.`wise, to the side of the jaw A, leaving aspaee between suliieient for the ii'eepassage ofthe blade B.

'Ihe edge (l of this plate,"adjaeent to the edge of `the jaw, is beveled ofi you :the outer side, Ias rep- `resented, so `asV to present a 'knife-edge to the under side of the limb on the side next tothe tree or shrub.

I ,'Ihisledge is arranged baek or below the edge of the adjacentjawA, as clearly shown. f

lhecdge of the knife Bisformed by beveling both sides thereof, instead of one only, as has heretofore been dono. i l ,l l The operation and advantages of my improved shears are as follows: y

The shears being applied to the limb tobe severed, with the cutter-#plate Dnext; to the. body of `the tree or shrub, the jaw A and the entter-plate D form a? double bearing for the limb, while the arrangement of 'thoedgell back oi' `that of jaw Aeanses an iii- Like-letters, designee mieter-tsm bom ofthe olination of the shears,whie`n insures a slanting cut, y while the double-beveled sides of the knife B` prevent the wedging of the knife away from the jaw, and the consequent strain on the pivot by which the two are ing surface is hat. Y i

The edge d, at the elose of the operation of severing the limb, outs the under or opposite side of the limb sufficiently tov prevent any splitting of the end, or any projecting sliver being left attached thereto. y Eig. II of the drawing is intended to illustrate the above-described loperation of my improved shears in `severing a limb.

It is important that the faee ofthe jaw or bearing A be dat, so as to permit the limb to yield lengthwise as it is being severed by the knife B, which operates vto wedge the limb apart` from the stub or portion left.

If the jaw A was-also beveled.v 4ofi' so as to form a cutting edge, the latter would penetrate the limb and cause the knife to wedge between the two bearings formed by the cutter-plate .D and edge of the jaw A,

thus 4obstructing the operation ofthe instrument.

I do not claim, broadly, the combination in pruningshears of `a knife working between two jaws or bearings; but

The arrangement, With the knife B and bearing A, provided with a dat faoe,.of thev cutter-blade I), having a beveled edge, d, arranged baek f theY faeeof the bearing B, so as to iusurea slanting and easy cut,

as hereiubefore set forth.

FRANK SMILEY.

`Witnesses:

` JAY HYATT,

1). 4W. FARGO.

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