US1176763A

US1176763A - Wire-tightening device.

Info

Publication number: US1176763A
Application number: US5878615A
Authority: US
Inventors: Henry H Lampert
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-10-30
Filing date: 1915-10-30
Publication date: 1916-03-28
Anticipated expiration: 1933-03-28

Description

H. H. LAMPERT.

WIRE TIGHTENING DEVICE.

APPLICATION FILED ON. 30. ms.

Patented Mar. 28, 1916.

in position thereon. Fig. 2 is nn'r sans ATENT FFIQ.

HENRY I-I. LAMPERT, OF CHICAGO, ILLINOIS.

WIRE-TIGHTENING DEVICE.

Application filed October 30, 1915.

wire and temporarily holding it taut; to.

provide an improved arrangement of the parts of such device so that when shifted to take up the slack they will be self-locking in their positions for holding the wire taut; and to provide a simple and inexpensive device of this kind particularly adapted for use in tightening and holding wires used in assembling concrete molds.

An illustrative embodiment of this invention is shown in the accompanying drawings, in which:

I Figure 1 is a plan of a portion of a concrete mold showing the tightening device an enlarged front elevation of the device. Fig. 3 is an enlarged transverse sectional detail taken on the line A-A of Fig. 2. Fig. 1 is a view similar to Fig. 3 of a modified form of the device. p

In the form shown in the drawings, the

device comprises a support or base plate 1,

having

lugs

2 and 3 integrally formed thereon at diagonally opposite corners, and having levers 4 and 5 fulcrumed to said lugs by means of pins 6 and 7 so as to swing in planes perpendicular to the plate 1.

Transversely disposed lugs S and 9 are formed in pairs on the opposed faces of the levers 4 and 5 so as to provide open-sided slots 10 for receiving the wire 11 which is to be tightened. Open-ended guide slots 12 are formed at opposite sides of the plate 1 by means of

lugs

13 and 14 in position to ap proximately aline with the slots 10 of the respective levers when in released position. The pivotand lugs 8 and 9 on each lever are so arranged with respect to the slots 12 that when the lever is shifted from the position indicated in dotted outline in Fig. 3, to that indicated in full outline, the wire between the shoulder 12 and the lugs is moved across the axis of the pivot as it is ti htened. The tension on the wire therefci re locks the lever in its shifted position Specification of Letters Patent.

Patented Mar. 28, 1916.

Serial No. 58,786.

and the wire is held perfectly taut until such time as the lever is shifted back to the first mentioned position.

WVhen devices of this kind are arranged with two levers, the levers may be pivoted at opposite sides of the plate, as shown in Figs.

v2 and 3, or they may be pivoted at the same side of the plate. The device may also be arranged with a single lever, as shown in Fig. 4:, in which case the guideslot 12 for the wire 11 extends in a considerable distance from one edge of the plate 1. As will be observed from the figure, the same action takes place, as explained in the previous paragraph.

The device is designed particularly for use I in tightening wires used in concrete mold construction, and is intended to be used for tightening the wires and temporarily holding them while the mold is being filled and during the time it is being allowed to set.

The device is used in the following manner: The plate 1 is set up against a post 15 or other member of a mold with the levers L and 5 shifted into positions wherein the

slots

10 and 12 are in alinement. One end of the wire 11 is then inserted into'the slot 10 (formed by the lugs 8 and 9) on the lever 4 and the other end of the wire 11 is set in the slot 10 on the lever 5, as illustrated in the figures. The free ends of the wire are then bent over the lugs 8 so as to lie along the handle in position to be grasped by the same hand which grasps the handle. The levers 4 and 5 are then thrown to the opposite sides of their fulcrums, drawing the Wire taut. As each lever is swung, the strain of the wire 11 is shifted across the pivot or fulcrum, as indicated in Figs. 2 and 4, so that the wire firmly holds and locks the levers in their shifted positions. \Vhen the plate is to be removed, the levers & and 5 are swung into their initial positions and the wires are released by pushing them sidewise out of the open-sided slots. The square shoulders on the lugs at each end of the slots 10 prevent slipping of the wires during the act of tautening them, and the

open slots

10 and 12 permit the device to be conveniently engaged and disengaged with the wires.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims. 7

I claim 1. A device of the class described, comprising a plate, a lever fulcrumed thereon to swing in a plane perpendicular to said plate, and means on said lever for gripping a wire and arranged to move that part of the wire which is adjacent thereto across the axis of said fulcrum, when said lever is swung to tighten the wire.

2. A device of the class described, comprising a plate, a lever fulcrumed thereon to swing in a plane perpendicular to said .plate, a shoulder located inwardly of said fulcrum, and means on said lever for gripping a Wire and arranged so that when said lever is swung for tightening the wire, the part of the wire between said means and said shoulder will be moved across the axis ofsaid fulcrum.

3. A device of'the class described, comprising a plate, a lever fulcrumed thereon to swing in a plane perpendicular to said plate, a shoulder on said plate at one side of said fulcrum, and means on said lever for gripping a wire arranged so that when said lever is swung to the opposite side of said fulcrum for tightening the wire, that part thereof between said means and shoulder will be moved across the axis of said fulcrum.

4:- A device of the class described, com prising a plate, a lever fulcrumed thereon to swing in a plane perpendicular to said plate, said lever having a slot formed therein to grip a wire and arranged so thatthat part of the wire which is adjacent thereto is moved across the axis of said fulcrum when said lever is swung for tight ening the wire.

5. A device of the class described, comprising a plate, a lever fulcrumed thereon to swing in a plane perpendicular to said plate, said lever having an open-sided slot formed therein to grip a wire and arranged so that that part of the wire which is adjacent thereto is moved across the axis of said fulcrum when'said lever is swung for tightening the wire.

6. A device of the class described, comprising a plate, a lever fulcrumed thereon to swing in a plane perpendicular to said plate, and a pair of lugs overhanging said fulcrum and providing a slot for gripping a wire, said lugs being arranged so that that part of the wire which is adjacent thereto is moved across the axis of said fulcrum when said lever is swung for tightening the wire.

7. A device of the class described, comprising a plate, a lug formed at one side of said plate, a guide for a Wire formed at the other side of said plate, a lever fulcrumed on said lug so as to swing in a plane perpendicular to said plate, means on said lever for gripping a wire,

arranged relative to said fulcrum so as to have the wire attached thereto when said lever is on one side of said plate and move sa1d Wire across the axis of said fulcrum when said lever is shifted to the opposite said means being side of said plate so as to lock saidlever in said shifted position.

8 A device of prising a plate, a posite sides of said plate, on said lugs and shiftable from each other in parallel planes perpendicular to said plate, means on each of said levers for gripping wires, each of said means being arranged relative to the respective fulcrums so as ,to grip the Wires on the outside of said fulcrums when said levers are shifted away from each other and move said wires across said fulcrums when said levers are shifted toward each other.

levers fulcrumed Signed at Chicago this 28th day of October, 1915.

HENRY H. LAMPERT.

the class described, com pair of lugs located at op toward and away.

copies of this patent inay be obtained for five cents each, by addressing the Commissioner'of Patents,

Washington, D. 0. I i