US448363A

US448363A - Pruning implement

Info

Publication number: US448363A
Authority: US
Publication date: 1891-03-17
Anticipated expiration: 1908-03-17

Description

(No Modl.)

J. W. PERRY &-j R. H. DIXON. PRUNING IMPLEMENT.

No. 448,363. Patented Mar. 17,1891.

UNITED STATES PATENT OFFICE.

JAMES \V. PERRY AND ROBERT HENRY DIXON, OF SANTA ROSA, CALIFORNIA.

PRUNING IMPLEMENT.

SPECIFICATION forming part of Letters Patent No. 448,363, dated March 17, 1891. Application filed October 20, 1890. Serial No. 368,723. (No model.)

To all whom it may concern:

Be it known that we, JAMES W. PERRY and ROBERT HENRY DIXON, citizens of the United States, residing at Santa Rosa, Sonoma county, State of California, have invented an Improvement in Pruning-Shears; and we hereby declare the following to be a full, clear, and exact description of the same.

Our invention relates to the general class of pruning-shears, and especially to that subclass having a sliding or movable fulcrum between. the opposing members, whereby what is known as a draw out may be had.

Ourinvention consists in the novel construction and relative arrangement of parts hereinafter described, and specificallypointed out in the claims.

Referring to the accompanying drawings for a more complete explanation of our invention, Figure l is a perspective view of our shears, taken from one side. Fig. 2 is a sectional View. Fig. 3 is a side view showing the opposite side of Fig. 1.

A is one of the handles of the shears, and B is the other, the two being controlled by an intervening spring or springs C. The handle A has connected with or formed intogrally with it the finger a.

D is the blade of the shears, separate from both handles. The pivot-bolt E passes freely through an elongated slot 01, made in the blade D, through the finger a, and through the end of the handle B, and receives a nut c on its projecting end, said nut being held by means of a ratchet e and a pawl e engaging the ratchet. This pivot-bolt therefore connects three partsnamely, the blade, the finger, and thehandle B.

The pivot-bolt E is squared in the handle B, so that it has by the movement of said handle a slight oscillatory motion in the operation of the shears.

In the upper end of the handle B, at a point below its pivotal connection, is made an elongated slot 1). Through this slot passes a pin 1), which is adapted to slide back and forth, and is provided with anti-friction rollers b whereby its movement is not retarded or impeded by friction. This pin also passes through the lower end of blade D. With the projecting ends of this pin are connected the links F, one on each side, the other ends of which are pivoted to the handle A at f. On the pivot-bolt E, where it passes through the elongated slot d of the blade D, is mounted an anti-friction roller 6 Now, the operation of the shears is as follows: WVhen the handles A and B are pressed together, the links F cause the pin b to descend in the slot b of handle B, and because said pin passes. through the lower end of the blade D said blade is also brought downwardly, its elongated slot cl sliding over the pivot-bolt E, so that said blade, in addition to its pivotal movement on the bolt, due to the coming together of the handles, has also a downwardly longitudinal movement, which produces the draw out. As the handles expand again, the links F cause the pin b to move upwardly in the slot 1), which movement of the pin effects the upward or return movement of the blade as it opens from the finger. It will be seen that in this operation the blade D has its longitudinal movement independent of the handles, which latter therefore remain in the same position and do not move lengthwise, as is customary with one or both handles in other forms of shears wherein a sliding fulcrum is employed to provide for a draw out. Therefore our shears are less tiresome to use, as the handles do not move lengthwise in the hand, but remain stationary in that respect.

The slight oscillatory movement of the pivot-bolt E, heretofore referred to, and due to its being squared in the handle B, has the effect of assisting by its rolling action in the movement of the blade, or rather tends to counteract any possible friction in the move ment, thereby providing for an easy and perfect operation of the blade, as described.

Having thus described our invention, what we claim as new, and desire to secure byLetters Patent, is-

1. In shears, the combination of the oppos in g handles, the blade having a sliding movement on its pivotal center, a sliding pin connecting the inner end of the blade with one of the handles, a pin E, having a square portion within said handle for assisting the movement of the blade, and a pivoted link connecting said sliding pin with the other hand'le, whereby the sliding movement of said pin is effected, substantially as and for the purpose herein described.

2. In shears, the combination of the slotted blade, the handle A, with its finger, and the handle 13, having an elongated slot, the pivotbolt passing through the slot of the blade, through the finger, and through the end of the handle 13, the pin fitted and sliding in the slot of said handle and connected with the inner end of the blade, and the link I pivoted to the handle and connected with said pin, substantially as herein described.

8. In shears, the combination of the slotted blade, the handle A, with its finger, and the handle B, having an elongated slot, the pivotbolt passing through the slot of the blade, through the finger, and through the end of the handle B, and squared in said handle, whereby it oscillates with the movement of the handle, the pin fitted and sliding in the slot of handle B and connected with the inner end of the blade, and the links F, pivoted to the handle A and connected With said pin, substantially as herein described.

In Witness whereof We have hereunto set our hands.

JAMES IV. PERRY. ROBERT HENRY DIXON. lVitnesses:

O. E. HOAG, 0. II. HOAG.