US437485A - Wire-stretcher - Google Patents

Description

NOM-oda.)

W. J. DOHERT-Y.

WIRE STRETCEBR.

Patented Sept. 30.1890.

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UNITED STATES PATENT OEEicE.

VILLIAM JAMES DOHER'IY, OF DES MOINES, IO\V-A.

WIRE-STRETCHER.

" SPECIFICATION forming part of Letters Patent No. 437,485, dated September 80, 1890.

Application filed May 26, 1890. Serial No. 353,214. (No model.)

To all whom, i6 may concern..-

Be it known that I, VILLIAM JAMES Do HERTY, a citizen of the United States, residing useful Improvements in Tire-Stretchers, of

iwhich the following is a specification.

My invention coniprehends improved devices for stretching wire, particularly fencewires; but parts of my improved apparatus are adapted for use in connect-ion with an ordinary toothed bar for stretching-carpets.

My improved wire-stretching apparatus is adapted to stretch wires from one post to another, to draw tightly together wires between two adjacent posts, so that they mayA bespliced, and also to draw wires tightly around the corner of a post without injury either to the post yor to the wire.

The details of construction and the Subj ectmatter claimed are hereinafter designated.

The accompanying drawings illustrate my invention.

Figure 1 is a plan view of my improved wirestretching apparatus, showing, also, diagrammatically the method of workingwhen stretching a wire from one post to another. Figs. 2 and 3 are detail views of the operating-lever and longitudinally-moving grip devices. Fig. 4 is a diagram view showing how a wire is stretched around a corner-post. Fig. 5 shows how wires from two adjacent posts are brought together and spliced. Fig. 6 is a side elevation of a carpet-stretcher embodying my invention.

The stretcher-bar or frame-bar A is provided at one end with a hinged loop B, to which is secured a chain C for attaching the stretcher to a fence-post. An ecentric gripdog D is also flexibly secured to the bar A at this end. At its opposite end the bar is provided with a guide-lug F., through which extends a iiexible cable or wire rope F, to the outer end of which a wire-gripping device G is attached. A similar wire-gripping device H is flexibly secured to the bar near the guidelug E. Any approved kind of wire-gripping device may be employed. Those shown are simple and efficient and are preferred.

The operating-lever I is bifurcated at its inner end and embraces the stretcher-bar A.

I To the inner end of the operating-lever on that side of the bar A opposite the handle is pivoted a link J, which is pivoted at its opposite end to the outer end of the grip-bar K, through'which the bar Aextends. A similar grip-bar L, projecting from the bar A in an opposite direct-ion, is connected to the operating-lever I by a link M.

The grip-bars K and Lare shown in the drawings as each consisting of two parallel plates a, connected on opposite sides of the bar A, and adjacent thereto, b'y bolts'b,and to the links J and M by bolts c. The links J and M are formed with shoulders' d, which engage with cross-bolts e when the clutchbars are moved forward on the bar A. The

flexible cable F, which passes through the guide E, is secured at its inner end to a bolt o f, extending through the bifurcated end of the lever I near the bar A.

In operation wires are stretched from post to post, as shown in Fig. l, by securing one end of the apparatus by means of the chain C to a post X, securing a wire to a post at a distance, and then attaching the grip-dog G to the Wire. By then operating the lever I the wire may be drawn taut past the post Y. The

back and forth movements of the operatinglever cause the grip-bars K and L to move along the bar Ain the direction indicated by the arrow. As show n in the drawings, the lever I has reached the extremity of its movement to the right and is ready to be moved to the left. When moved to the left, the clutchbar L slides freely on the bar A toward the post X, the shoulder d engaging with the cross-bar e and holding the clutch-bar at right angles to the bar A, allowing it to slide freely. The clutch-bar K remains stationary as the linkJ causes the bar to become inclined, so as to clutch or grip the bar between thebolts b. When the lever is moved in an opposite direction, the grip-bar K moves to the left, while thel bar L remains stationary. In this way the wire is drawn very tight and held firmly until released. By attaching the gripdog H to the wire and releasing the dog G anew hold may be taken on the wire, -so as to draw it tighter, if desired, by moving the operating-lever I andthe connecting parts to the right and securing the dog G to the wire at another point. The iexible cable F enables me to draw a wire, either plain or barbed, around a corner-post, as shown in Fig. 4.

The operation of the apparatus and its attachments are substantially the same as above described, except that the cable F is carried around the corner-post Z, as indicated. To stretch two Wires between adjacent posts and splice them, the apparatus is attached to the adjacent ends of the wires, as indicated in Fig. 5.

Instead of securing one end of the barA to a post by the chain C, I attach one of the Wires to the grip-dog D and the vother Wire to the grip-dog G, and then operate the lever I to stretch the Wires. By applying the gripdog H to the wire I may detach the dog G Without slackening, and the Wires may be connected so as to afford a tight and firm connection. The grip-bar A is shown as pr0` vided at one end with a tooth N, projecting at right angles. This tooth maybe sometimes used to secure the bar to any desired object instead ot' the chain C; but it is especially designed for use when my apparatus is employed as a carpet-stretcher, as indicated in Fig. 6. When used as acarpet-stretcher, the dog H, guide E, dog G, and cable F may be removed. The chain C and dog D are also removed, and a transverse toothed bar O is applied to the bar A by means of a sliding loop P. The bar O is connected to the lever I by means of rods Q, which are secured to the lower end of the lever above the bar A.

By vibratin g the lever back and forth the bar O may be made to move toward the end N and stretch the carpet to its desired position.

I claim as my inventionl. The combination, substantially as here;

lexibly secured to the stretcher-bar near the cable-guide.

2. The combination, substantially as hereinbefore set forth, ot' the stretcher-bar, the grip-bars projecting in opposite directions from the stretcher-bar, links connecting the outer ends of the grip-bars with the operating-lever, and cross-pieces with which shoulders on thelinks engage,in the manner speciied.

In testimony whereof I have hereunto subscribed my name.

VILLIAM JAMES DOHERTY.

Witnesses:

G. A. AvRiLL, O. F. PENFIELD.

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