US1914761A - Tightener for concrete form tie wires - Google Patents

Description

J. F.TARR|S Filed Dec. 18, 1950 June 20, 1933.

' TIGHTENER FOR CONCRETE FORM TIE WIRES in 12min? Allomey I Ta wry/15 M Patented June 20, 1933 ED STATES are JOHN F. TARRIS, OF CLYDE, OHIO TIGI-ITENER FOR CONCRETE FORM TIE WIRES Application filed December 18, 1830. Serial No. 503,337.

This invention relates generally to conagainst' the outer face of the studs 2 which crete forms and more particularly to a device is disposed between the free end portions of for tightening the tie wires of the forms and the he or clamping wires 3 and said bracket has for its Primary bj t t id in a inclpdes a flat base portion 5 from which 6X J;,

5 manner as hereinafter set forth, a deviceof tend the spaced, opposed, integral'arms 6 this character embodying the novel construchaving horizontally aligned openings 7 tion and arrangement of parts whereby tie therein. 'lhebracket at further includes an wires may be tightened to the desired tension upper wall or plate 8 having a vertical openin an expeditious manner and secured under 111g 9 therein in which is operable a pawl or tension as long as desired, dog 10 having a head 11 formed integrally on Other objects of the invention are to proits lower end. vide a tightener for concrete form tie wires An elongated, tubular bar 12 extends rotatof the character described which will be simably through the openings 7 in the arms 6 of ple in construction, strong, durable, eflicient the brackete and has fixed on an intermediate 5 and reliable in use and which may be manuportion thereof for rotation therewith befactured at low cost. tween the arms 6 a ratchet 13 which, if de- All of the foregoing and still further sired, may be formed integrally with the tuobjects and advantages of the invention may bular bar 12. Suitable means may be providbecome apparent from a study of the followed for retaining the tubular bar 12 against ing specification, taken in connection with the sliding movement n the openings 7, such as a accompanying drawing wherein like chartransverse cotter p1n'l4. The tubular bar 12 acters of reference designate corresponding is further provided with spaced transverse parts throughout the several views, and openings 15 on opposite sides of the bracket h i 4 for the reception of the end portions of Figure 1 is a view in vertical section showthe tie or clamping wire 3 and said tubular ing the device in accordance with this invenbar is still further provided, on one end, with tion mounted in position on a concrete form. a polygonal head 16 for engagement by asuit- Figure 2 is a view in front elevation show able actuating tool such as a wrench for rotating a pair of the devices mounted in position mg the tubular bar.

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30 on the studding of a concrete form. In use, the tie or clamping wires 3 are in- Figure 3 is a sectional view taken substansorted through the holes provided therefor tially on the line 33 of Figure 2. in the concrete form 1 in the usual manner, Figure 4 is a view in perspective of one and in which position said wires straddle the of the clamping wires. studs 2. The free end portions of the tie or Referring to the drawing in detail, it will clamping wires are then inserted througlr be seen that the reference numeral 1 desigone of the openings 15 on each side of the nates generally a portion of a concrete form bracket 4 with said bracket 4 held against for the reception of concrete, said form in the outer side of one of the studs in the mancluding the studding 2. Tie or clamping ner clearly illustrated in the drawing. A Wires 3 are bent to substantially U-shaped wrench is then applied to the polygonal head form and inserted through holes provided 16 and the tubular bar 12 is manually rotherefor in the concrete form 1 in a manner tated to wind the end portions of the tie to straddle or embrace the studs 2 which are or clamping wires 3 thereon and thus tighten disposed on opposite sides of the concrete said wires to the desired tension. When the 45 form. The free ends of the tie or clamping tubular bar 12 is rotated in a direction to wires 3 project beyond the adjacent stud 2 tighten the tie or clamping wires, the pawl I of the concrete form for a reason to be pres or dog 10, which is gravity actuated, will ride ently set forth. over the ratchet teeth but the head 11 of said A bracket designated generally by the pawl or dog will engage the ratchet teeth in 5 reference numeral lis adapted for disposition a mannerto prevent retrograde rotation of the tubular bar 12, as will be readily apparent. As hereinbefore indicated, the pawl or dog 10 is mounted for vertical sliding movement in the opening 9 in the upper wall or 5 plate 8 of the bracket 4. The head 11 is pro vided with flat front and rear sides, the front side engaging one side of a ratchet tooth and the rear side being in abutting engagement with the base portlon 5 of the bracket I when 1 the pawl or dog is in operative position. In this manner the pawl is supported against lateral pressure exerted thereon by the ratchet on the bar 12.

It is believed that the many advantages 15 of a device in accordance with this invention will be readily understood, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of con- 2 struction may be had which will fall within the scope of the invention as claimed.

What is claimed as new is v A device of the class described comprising a bracket, a ratchet rotatably supported by the bracket, said bracket having a vertically arranged part spaced from the ratchet and a top part extending over the space between the vertical part and the ratchet, said top pafi having an opening therein, a gravity actuated pawl of substantially inverted T- shape having its stem passing slidably through the opening with one end of its head slidingly engaging the vertical part and its other end engaging the teeth of the Q ratchet.

In testimony whereof I afliX my signature.

JOHN F. TARRIS.

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