US252227A - Pruning-shears - Google Patents

Description

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VPRU'NINGr SHEARS.v No. 252,227. A Patented Jan. 10,1882.

UNITED STATES PATENT OFFICE.

PAUL KOERBER-,OF HARLEM, LOUISIANA.

PnUrnNG-SHEARS.v

' SPECIFICATION forming part of Letters Patent No. 252,227, dated January 10, 1882. Application filed August 2, 1881. (Model.)

To all whom it may concern:

`Be it knownl that I, PAUL KOERBER, of the,

village of Harlem, in the parish ot' Jefferson and State of Louisiana, have inventedcertain new and useful Improvements in Shears; and l do hereby declare the following to be a full, clear, and exact'description or" the invention, such as will enable others skilled in the artA to which it appertains to make and use the same, reference being had tothe accompanying draw- Ing. Y

`My invention relates to an improvement in shears, and more particularly to that class called pruning-shears; and it consists in certain details in construction and combinations ot' parts, as will be more fully described, and pointed ont in the claim.

The accompanying drawing represen ts a perspective view of my improvement.

A represents the stationary blade provided with the` arm a, which latter is adapted to be secured to a pole, E, by the ring or ferrule b. This stationary blade A is provided with the arms c and d, the internal edge of the arm c forming the cutting edge of the blade A, while the arm B forms a support for the removable blade D. This removable or pivoted blade D is secured to the pivoted arm B by the screw c and by the pivotal screw c', which latter passes through the extreme upper end of the arm d and extreme upper ends of the blade D and pivoted arm B. By placing the fulcrum of the pivoted blade or cutter at the eX- treme upper end thereof and applying the power at the extreme lower end of the arm` B a greater leverage is obtained, which allows branches of considerable size to be cut without the expenditure ofany considerable amount ot' power.

When pruning with ordinary shears it often happens that instead of the branch or stem lying-at right angles to the blades dui-ing`the operation of cutting it turns to an acute angle and becomes clogged between the blades, and

consequently pushes them apart, lwhich renders the shears useless after a time. To remedy this defect I rigidly or removably secure the guide-arm C to the arm B, and so adaptit that when the parts are secured together the guide-arm C will move and bear on the blade A on one side, while the blade D moves and bears on the opposite side. This construction prevents the blades from separating, and should the brauch or stem, 6to., turn from a right angle, it will be effectually cut without clogging the parts.

The lower end of the pivoted arru B is provided with a ring or opening,f, to which one end of the operating-cord g is secured. This cord y thenpasse's through a ring, h, secured to the lower end ofthe arm a, and from thence down to the operator. By pulling downward on this cord the blade D is caused to approach the stationary blade, and when the pressure thereon is released the spring i forces it outward to its farthest position, which consequently separates the blades for the introduction ofthe next branch.

By constructing shears as above described the blades are caused to make a direct and clean ont, and any deviation of the blades is prevented. It admits of a rapid adjustment to all objects to be cut, and is admirably adapted for cutting of briars, orange, or other thorny shrubs or trees.

I claim- The combination, with the stationary blade A, having the cutting-arm c and the long arm d, of a movable arm, B, carrying a removable cutter, D, and guide O, and pivoted tothe extreme end of thearm d, and provided with a spring and an operating-cord, substantially as set forth.

PAUL KOERBER.

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