US1751381A - Wire stretcher - Google Patents

Description

Mmh 18, 1930.

A. ANDERSON' 1,751,381

WIRE STRETGHER Filed Oct. 7 1925 2 Sheets-Sheet l Patented M'ari 18, 1930 UNITED STATES AUGUST ANDERSON, F SHOSHONI; wisomrne WIRE swan-sienna Application filed. October 7,1925. seria1.no. .e1',05e.jf t

release the wire by slacking the wire, as it will grip and hold a wire without a binding action between the parts which tends to make the releasing of the wire diflicult.

A further object of the inventian is to make the chain wheel of great strength so thatthere is no danger of its breaking, and of such construction that it will grip the'chain without danger of the chain slipping.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to

be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denotelike or corresponding parts throughout the several views, and in which Figure 1 is a viewshowing the device in use.

Figure 2 is a longitudinal sectional view through the body of the device. 1

Figure 3 is a section on line 33 of Fig ure 2.

Figure 4 is a section on line tof Figure 2.

Figure 5 is a sectional chain wheel.

Figure'6 is a view. of the holding or grip- 45 ping member.

Figure 7 is a view of the gripping lever of the holding member.

The body A of the device is formed of a frame 5 in which is journaled ashaft 6,; the ends of which extend from the frame and are shaped to receive the socket part of a handle view through the will cause the chainto pass through, the de-'.

rection.

tions bent overthe partsof-the frame and -to the member 19 by a pin 23', and the ex- 7 so that the shaftcan be turned by hand; A chain wheel 8 is connected with the shaft-and is located" between the two parts of the frame. Y Thi's w-hee'l is formedwithf-the projections 9 for; engaging the spaces formed by the links of the chain:10'andthe'pairsof spaced'project-ions 11 which form recesses for receiving the edges of the linksg'as clearly shownin Figure 2. Theedges ofthe portions forming the-projections 9 are curved, as at 12, to re-' ceive the curved end portions of the links.

Thus when the wheel is turned,*the projec tions engaging alternate links of the chain vice. A double pawl 13 is'pivoted in the frame and prevents retrograde-action of the chain wheel. B'y reversing this dog, the

chain wheel can'be rotatedin an opposite di The pawli's" held in eitherone of'its two positions'by means of'a'spring plunger 14 carried by theframe, and engaging the wedge shaped'cent'er. of the, pawl. Spacer members '15 are placed in, the frame to prevent side play of the pawl, these members having por- 75 the pivot pin 16' of the pawl passes through said members. I I p A swivel 17 .is' placed in one end of the frame and a chain 18'fis connected with this swivel. A gripping *member'B. is fastenedto so the end of thischain andsimilar members G and D' are attached'flto the end ofthe chain, 10.,

' Each member 'ce mprises, an L-shaped body 19, which is providedwith a curved handle part 20 at the junction of its two arms and which has an eye 21 at the extremity "of one arm for receiving a terminal link of a chain. Theother arm is of greater dimensions and has a beveled end 22. A lever 23 is pivoted tremity of this lever is bent over to form a groove 24, with a slot 25 in the bent over portion, the part to one side of the slot being bent outwardly to form an ear 26. v

The wire to be gripped is placed in the groove 24 and then bent and passedthrough the slot 25 and then the lever swung against the member 19 so that. the beveled! part 22 W111 enter the groove 24. Thus a tension on the parts will cause the lever 23 to clamp the. 00

Wire between itself and the end 22 of the member 19, and the greater the pulling force, the greater will be the clamping action. As soon as the wire is slacked, however, the lever 5 23 will swing away from the member 19 so that the wire can be easily released. One of the gripping members on chain is fastened to one wire and the gripping member B on chain 18 is fastened to the second wire. 10 Then by turning the shaft bymeans of the handle 7 the chain will be pulled through the device, so that the two wires will be brought towards each other. When the member D reaches the body A, the member 0 is gripped on the wire and the member D released. Then the pawl is reversed, the handle 7 placed in engagement with the other end of the shaft and the body A turned over so that when the handle is turned, the chain will 7 20 be fed through the device in an opposite direction and take up further of the slack in the wires. This operation is repeated until the wires are sufficiently taut. t 1 The device is very compact, can be manufactured to sell at low cost and the gripping members can be quickly and easily placed on the wires and justas easily released therefrom. V c What I claim is: 7 A wire stretcher including a chain wheel mounted for rotation, a chain, said wheel comprising opposed side plates each of subst-antiallytriangular contour providing corner projections, the corner projections of the respective plates being arranged in confront- .ing relation, said wheel also including center ,projections arranged between the corner pro- .jections and the triangular-shaped side plates and extending an appreciable distance be- 40 yond the edges of said triangular plates to receive the links of the chain, the side edges of the triangular-shaped plates being of a length substantially equalto the length of p the link, whereby the latter lies fiat upon the 1 adjacent side edges of the triangular-shaped plates throughout their length while engaged by the adjacent center projection. I In testimony whereof I aflix mysignature. l AUGUST ANDERSON.

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