US1673227A - Hand tool - Google Patents

Description

June 12, 1928. 4 1,673,227

, A. A. A. BYRD HAND TOOL WVIA TW flAABY/w @zfl Patented June 12, 1928.

UNITED- stares 1,673,227 parent ()FFICE.

ANTHONY ALBERT auensrus BYRD} on mason, enemas;

HAND 'roo'fri.

Application filed October 2, 1926, Serial so; 139,151, and in Great Britain December 2231925. i

This invention relates to a new or improved hand tool to be used for the pee A tool constructed in accordance with the present invention comprises a lever or bar so formed at one end that it can" be" used to obtain a purchase aga-inst theobject which the wire is to be applied and on which the wire is to be tightened the said end being so shaped as to form' a fulcrum of the said 7 lever. v v

Adjacent to the fulcrum end of the lever or bar are provided side flanges or brackets that serve for supporting on a suitable axis a small lever that is provided'with a cam or eccentrically shaped end to clamp the ends of the wire between said cam and the base or surface of the lever or bar contained within the said side brackets.

In order to accommodate various sizes or gauges of wire or tape the distance between the aforesaid base and the cam lever must be made adjustable and for this purpose suitable fiat plates may be secured in any convenient manner to the aforesaid base so as to increase or decrease the space between the cam lever and the aforesaid flat plate which may be roughened in any suitable way to increase the gripping efiect.

Obviously the same effect can be obtained by providing the side flanges or brackets of the lever or bar with slots into which blocks carrying the spindle may be secured by any convenient means said blocks having the bore for the spindle provided near to or remote from the aforesaid clamping or gripping surface of the lever or bar or the block may be provided with a central bore for the spindle and by the interposition of packing strips the position of the axis relatively with the gripping surface adjusted to suit the wire to be strained and twisted.

In order that the invention may be readily understood reference may now be had to the accompanying drawing, wherein similar reference characters relate to like parts in all the figures thereof.

Figure l is a perspective view of the tool as applied to straining wire loops that are passed through mould plates as commonly used for monolithic building construction.

Figure 2 illustrates the several parts of the tool dissociated from one another.

Figure 3 is another perspective view showing the application of the tool to another purpose;

Figures 4 and 5 are respectively fragmentar y elevation and transverse section of a modification in the construction of the tool Referiing now particularly to Figures 1 and 2 it 'will; beseen that the lever a at its front end" is provided with'the nose or beak b and on its uppersurface with the side bracketsc' that support the spindle (Z upon which is mounted the clamping lever e which when turned down in the position shown in Figure l grips the pair ofwires 7' that are stretched across the space g between-the mould plates it that are presumed to" be set up for the construction of a monolithi'c'wallif It will be understood that for the purpose of inserting the wires f between the clamping lever e and the gripping surface 71 of the lever w, the lever e is raised into the position shown in Figure 3 and preferably the front end of the lever a somewhat raised as compared with that shown in Figure 1. By firstly lowering the lever e the wires are gripped and then the tool is forced into the position shown in Figure 1. Obviously the nose or beak Z) will abut against the flanges of the mould plates h and so strain the wires 7 that pass across the space g, then by turning the handle j of the tool the wire will be uniformly twisted as shown at 72 Figure 3. The gripping lever e may be then raised as shown in Figure 3 when the tool can be taken away and the ends of the wires f cut olf if required.

For the purpose of adjusting the space between the clamping lever e and the gripping plate 1; for dealing with various sizes of wire the interposition of one of the ex changeable plates c' which are of different thickness as seen in Figure 2 is all that is necessary and the said plate can be secured in place by screws as shown or otherwise.

Figure 3 shows the application of the tool for straining the wire and securing vertical and horizontal members of reinforcing rods together as commonly assembled in monolithic structures.

The modification illustrated in Figures 4: and 5 consists in providing the brackets 0 with slots m to accommodate blocks n which form bearings for the spindle d upon which the clamping lever e is rotatably between the clamping surface of the lever e and the gripping surface of the lever a packing strips '11 are placed beneath the blocks a and a cover plate fixed to the bracket 0 which carries the set-screw p whereby the bearing blocks n are secured firmly in position, otherwise'this tool is precisely the sameand operates in a similar manner to that described in connection with Figures 1 to 3.

It will be understoodthat the tool above described can be applied to many purposes, other than the examples aforesaid, for example for securingthe wire strands around packing cases and the twisting of such Wires together in order to securely bind the packet together andprevent aceessthereto without bursting or breaking the wire or band used for the purpose. I a

What I claim is g- I 1. A hand tool for gripping, straining and twisting wire comprising in combination a hand lever and a cam lever pivotally mounted thereon, said hand lever being provided with a gripping surface and also with 9.

nose forming a fulcrum, and means for varying the space between said gripping surfaceand said cam lever for accommodating various gauges of wire.

2. A hand tool for gripping,v straining and twisting wire comprising in combination a hand lever and a cam lever pivotally mounted thereon, said hand lever being provided with a gripping surface and also with a nose forming a fulcrum there being provided a plurality of exchangeable plates of different thicknessfor varying the space between said grippingsurface andsaid cam lever for accommodating various gauges of wire.

3.. A hand tool comprising incombina- .tion, a hand lever provided with a nose forming a fulcrum anda gripping surface above said nose, a pair of brackets ad acent to said nose, a spindle carried by said brack ets, a cam lever pivotally mounted on said spindle there being provided a plurality of exchangeable plates of different thickness for varying the space between said gripping surface and said cam lever. I

In testimony whereof I aflix my signature.

' ANTHONY ALBERTAUGUSTUS BYRD.

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