US1684797A - Wire puller and twister for concrete framework - Google Patents

Description

Sept. 18, 1928.

T J. HowsoN WIRE FULLER AND TWISTER FOR CONCRETE FRAMEWORK Filed June 50, 1927 Patented Sept. 18, 1928 OFF C THOMAS J. nowsoiv, or MAnsHrIELiJ, oiineolv.

WIRE PuLLER AND Twiste s Application filed Jane 30;

This invention relates to new and useful improvements in wire working tools and aims to provide a highly novel simple, and efficient wi re puller and twisterfor concrete formwork.

In the construction of concrete buildings it is nec e'ssary that a number of forms be consti'iicted the purpose of which is to retain the walls during the process'of hardening. Whenithe forms are put in it is necessary that they should be wired together, otherwise they would spread while the concrete is being settled and tamped.

in placing the wires through the form it is the usual process to put a gimlet hole through the forms and extend. from the board on one side to the board on the other side crossing over, say to-the right, four or five inches and back again to the same board. The method of fastening the-boards so as to hold them in place has heretofore been to take the two ends ofthe wire and twist them either by hand orwith a piece of steel or other metal to the proper tension. It is also the custom to take a nail or a piece of steel or some suitable metal inside the form and give the wires a twist or two at that point. Naturally this is a slow and tedious process.

By reason of my improved device the ends of the wire may be securely looked to the tool after which the ends of the wire may be twisted together. After this twisting operation a swivel hook-shaped fulcrum associated with the inner end of the tool is placed against the wall of the form after which the tool is forced downwardly; The purpose is to tighten or draw the forms closer to gether. This action dispenses with the neoessity of twisting the wires in the middle of the form which will prevent the wires from being removed for further usage after the concrete has settled. Furthermore itwill by reason of this tool not be necessary to enter the form as the entire job may be completed from the outside. Furthermore, the drawing and twisting of the wire may be done in a rapid manner and without requiring much effort on the part of the workman. In the drawing, wherein like numerals indi cate like parts throughout the several views:

Figure 1 is a side elevation of my improved tool,

Figure 2 is a detail longitudinal section thereof, and,

Figure 3 is a transverse section taken substantially upon the line 33 of Figure 2.

son CONCRETE. FRAMEWORK] 1927, Serial in. 202,586.

New haviiig particular reference to the drawings my improved tool consists of a tubular bar 5 of predetermined length and diameter the forward end of the bar being outwardly flanged as at 6. Loosely arraiiged upon the tube directly in back of this flange is a. ring 7 formed with a for wvaTdly and downwardly extending hook 8 the. point of which is sharpened so that it may be forced into one of the boards of a wooden concrete form, to function asa fulcrum for the bar '5. Directly in back of this ring 7 said bar is formed externally with a collar 9 that is in turn formed with radiating and spaced parallel ears 101O The lever 13 extends upwardly and rearwardly from the ears 1O and-thence directly rearwardly the extreme end thereof being equipped with a suitable handle 16.

Obviously, when the lever is swung in an upward direction for releasing the clamping foot 14 from the inner surface of the bar 5 the ends of the concrete form wire may be arranged within the forward end of the bar. By moving downwardly upon the handle the clamping foot 14 will firmly bind the ends of the wire within the tubular bar whereupon the ends of the wire may be inter-twisted by turning the tool. After the proper twisting has been brought about the hook-shaped fulcrum 8 is engaged against the form and the tool thence rocked downwardly for further tightly drawing the wire upon the form; When it is desired to remove the wire the twisted ends are snipped after which one end of the wire is arranged within the tool and firmly clamped therein after which the wire may be easily torn from the form by a pull upon the tool.

It will thus be seen that I have provided a highly novel, simple and efficient wire pulling and twisting devise for concrete form work that is well adapted for the purpose heretofore designated and even though I- have herein shownand described the invention as consisting of certain detailed structural elements, it is nevertheless to be under stood that some changes may be made therein without affecting the scope of the appended claims.

lever pivoted adjacent the forward end of the bar and a clamping foot associated with the lever and extending into the bar for clamping the ends of the wire within said bar. L

2. In a wire pulling and twisting implement of the character described, a relatively elongated. bar member within whichthe ends my invention," what of the wire to be pulled and twistedare to f be arranged, a lever pivoted adjacent the forward end of the'bar the outer end of upon the inner end of the lever, said foot 7 being arranged within'the forward end of the bar and adapted to clamp the wire within the bar when the said hand lever isdepressed. a p

3. In a wire pulling and twisting device of the class described, a relatively elongated hollow har member within the forward end of which the ends of the wire to be stretched are disposed, aswivelled fulcrum associated with the forward end of the bar and means associated with the bar engageable within the .bar for clamping the ends, of the wire within said bar. I

In testimony whereof I afiix m si nature.

y THOMAS tHoWsoN.

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