US1004725A - Wire-stretcher. - Google Patents

Description

J. C. BARCLAY.

WIRE STRETGHER.

APPLICATION FILED r1112. 11, 1910.

1,004,725. Patented 0111. 3, 1911.

& ":6

4 1 I v C5 1 6 I 9 Q g a I JOHN C. BARCLAY, OF MONIGLAIR, NEW JERSEY.

UTTE

WIRE-STRETCHER.

Specification of Letters Patent.

Patented Oct. 3, 1911.

Application filed February 11, 1910. Serial No. 543,343.

To all whom at may concern:

Be it known that I, JOHN C. BARCLAY, a citizen of the United States, residing at Montclair, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Tire-Stretchers, of which the following is a specification.

My invention relates to wire tighteners and particularly to that class thereof employed primarily or customarily in connection with the guy wires of telegraph poles and the like, for taking up slack; and my present invention involves improvements on devices for the same purpose, illustrated and described in U. S. Patent No. 940,424 dated November 16, 1909 and in applications Sr. Nos. 531,366 and 532,642.

My invention consists in the novel con struction of the frame of the device, in the novel means employed for locking the spindle against backward rotation, and in various other features hereinafter described and particularly pointed out in the claims.

The objects of my invention are to provide a simple, compact and relatively inexpensive device of the character described, to provide improved 'means for locking the spindle against backward rotation, to provide a strong and simple one-piece frame, and generally to make the device simple, compact, easy to use and relatively inexpensive.

I will now proceed to describe my invention with reference to the accompanying drawing, and will then point out the novel features in claims.

In the drawing: Figure 1 shows a side View and partial section of the device; Fig. 2 shows a rear view of the device; Fig. 3 shows a front view of said device with the spindle sectioned; and Fig. 4 shows a fragmentary transverse section through the center of the spindle.

The frame of this wire stretching device is formed in one piece and is of general U- form, one branch of the U however, being extended beyond the other branch and bent over to the center line of the device; this frame therefore being a species of hook. Said frame is provided with a bearing to receive a suitable spindle, and the spindle is provided with looking teeth adapted to be engaged by a toothed block fitting within a suitable orifice in the frame and normally held in engagement with the teeth of said spindle by means of a spring. In the drawings, l designates the said U-shaped frame and 2 the upward extension of one side thereof, such upward extension being bent over, as shown, to the center line of the device. 3 designates the said spindle having journals 4 and 5 working within suitable bearings formed in the sides of the frame member. The spindle, as will be seen, extends across the b ight of the hook. Vithin the bight of the hook, said spindle is provided with a shoulder 6 having locking teeth 7 formed in one side thereof. The bearing orifice through which the journal 4 of the spindle ext-ends, is enlarged, on the side of said journal opposite that on which the pressure comes when the device is in use, such enlargement being for the purpose of receiving a locking block 8 normally held in place by means of a spring 9, such block pro vided with teeth 10 adapted to engage with the teeth 7 of the spindle, and so hold the spindle locked against backward rotation.

At its opposite end, the spindle is provided with a polygonal head 11 adapted to receive a wrench by which the spindle may be turned, and, near the same end of the spindle, but within the bight of the hook, said spindle is provided with acollar 12 adapted to prevent the wire from being caught and pinched between the spindle and the frame. On the opposite side of the hook the shoulder 6 performs the same function. The aperture in the hook through which the journal 5 extends, is enlarged on the side opposite that on which the pressure comes when the device is in use, to permit the passage of the shoulders 6 and 12 when inserting the spindle into the frame.

The upper end 2 of the frame is provided with a wire-guiding groove 13 which crosses an orifice 14 adapted to receive the sides of a stirrup or eye 15 (Fig. 1) provided at its ends with suitable nuts by which this eye or stirrup may be screwed up so as to hold the wire tightly.

The operation of this device is as follows: The hook-shaped frame is first hooked into the eye or loop of an anchor rod or cable or the like, and the spindle is then passed across the bight of the hook and the locking block 8 inserted in place. When said block is in place, it is held on one side by the spring 9 and on the other side by the teeth of the shoulder 6, with which teeth its own teeth are in engagement. The wire to be tightened having been led through the eye 15, and through the hole 16 of the spindle, (the latter hole being provided for the purpose of securing the wire to the spindle) a wrench is applied to the head 11 and the spindle is turned to wind up the wire upon it, the locking block 8 retracting. to permit such motion of the spindle, and being pressed forward by the spring 9, after the passage of each tooth to the spindle past a corresponding toot-h of the locking block, so as to hold the spindle against backward rotation.

lVhat I claim is l. A wire tightener comprising a frame and a spindle mounted to rotate in bearing orifices in said frame and provided with a shoulder having in its face ratchet teeth, one of said bearing orifices being enlarged on the side'opposite that against which the spindle bears during the action of the de vice, and a locking block mounted in the enlarged portion of such orifice to move in a direction approximately parallel to the axis of the spindle and arranged to engage the teeth of said spindle to prevent backward rotation of the latter.

2. A wire tightener comprising a frame and a spindle mounted to rotate in bearing orifices in said frame and provided with a shoulder having in its face ratchet teeth,

one of said bearing orifices being enlarged on the side opposite that against which the spindle bears during the action of the device, a locking block mounted in the e11- larged portion of such orifice to move in a direction approximately parallel to the axis of the spindle and arranged to engage the teeth of said spindle to prevent backward rotation of the latter, and a spring tending to force said locking block into engagement with the teeth of the spindle.

3. A wire tightener comprising a frame and a spindle mounted to rotate in the hearing orifices of said frame, and provided near opposite sides of the frame with shoulders adapted to prevent pinching of wire between the spindle and the frame, one of said orifices enlarged on the side opposite that against which the spindle bears when the device is in use, to permit passage of said shoulders, and a locking block fitting within one of said orifices and arranged to engage the teeth of the spindle to prevent backward rotation thereof.

In testimony whereof I afiix my signature in the presence of two witnesses.

JOHN C. BARCLAY. Witnesses H. M. MARBLE, T. E. BARTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images