US2725902A

US2725902A - Wire twister

Info

Publication number: US2725902A
Application number: US346973A
Authority: US
Inventors: Paul S Giuliano
Original assignee: CONRAD R SEIM
Current assignee: CONRAD R SEIM
Priority date: 1953-04-06
Filing date: 1953-04-06
Publication date: 1955-12-06
Anticipated expiration: 1972-12-06

Description

Dec. 6, 1955 P. s. GIULIANO 2,725,902

WIRE TWISTER Filed April 6, 1955 United States Patent() yWIRE TWISTER Paul S. Giuliano, Van Nuys, Calif., assignor to Conrad R. Seim This invention relates to a wire twister and concerns itself primarily with a pair of novel coacting jaw members having wire guiding means and adapted for seizing strands of wire for twisting the same and which can be locked in closed position by a pivoted locking lever having parallel jaw engaging arms and which can be opened or separated by yielding means for further operations or for the insertion of diierent wires.

It is an object of this invention to provide a novel form of wire twister that is simple in construction and operation and which can be used in any constricted location of a size to receive a mere tubular member.

The invention comprises the novel structure and cornbination of parts hereinafter described and more particularly pointed out and defined in the appended claims.

In the accompanying drawing which illustrates a preferred form of this invention and in which similar reference numerals refer to similar features in the different views:

Fig. 1 isa top plan view of a wire twister involving this invention; y

Fig. 2 is a side elevation view of the said wire twister;

Fig. 3 is a sectional view taken upon the line 3-3 of Fig. 1 with the addition of a wire applied thereto;

Fig. 4 is a sectional view taken upon the line 4-4 of Fig. 2;

Fig. 5 is a sectional view of the jaw members in open positions; and

Fig. 6 is a sectional view taken upon the line of 6-6 of Fig. 5.

In referring now to the drawing, there is shown a tubular member 7 having a knurled section 8 having a slot 9 through which a finger piece 10 projects. This finger piece can be shifted from one end of the slot to the other end for controlling right and left handed dogs in the tube 7, which dogs coact with the right and left handed threads or spirals 11 and 12 on a rod 13 which extends into the tube 7. The outer end of the screw rod 13 is provided with a hand knob 14 whereby the same can be shifted for rotating the tube 7. The dogs have not been illustrated since the same and the manner of controlling the same are well known and involve no part of this invention except as they cooperate therewith to rotate the jaws for twisting strands of wire.

The interior of the tube 7 extending inward from the

jaws

15 and 16 consists of parallel straight surfaces 7a and arcuate surfaces 7b which join the ends of the straight surfaces as shown in Fig. 4. The

jaw members

15 and 16 have

arcuate shanks

15a and 16a that it the arcuate surfaces 7b and extend between the straight surfaces 7a. The

shanks

15a and 16a are supported upon a pivot pin 17 which extends through the tube 7. A coil spring 18 wound around the pivot 17 within the tube 7 serves to open or separate the

jaw members

15 and 16 when they are unlocked as will later appear. The

arcuate shanks

15a and 16a of the jaw members have

flanges

15b and 16b that extend toward each other and are adapted to CCV fulcrum upon each other at their innermost ends as shown in Fig. 5 when the jaw members are opened by the spring 18.

The forward portions of the jaw members or those por-` tions which extend beyond the tube 7 are provided with guiding means for the strands of the spring when the same are applied to the twister. t While this means may take various forms, in the present instance the outer end of Vthe jaw member 16 is provided with a pair of spaced pins 19 and thel jaw member 15 is provided with recesses or sockets 20 to receive the pins. Spaced inwardly from the pins 19, each jaw member is provided with a guide pin 21 for entering a socket 22 in the opposite jaw member.

A lock. lever 23 is provided with a U-shaped head portion 23a which fits over the tube 7 as shown in Figs. l and 2. The lower portion of the head portion 23 has a pair of forwardly extending arms 24 which are pivoted upon the pin 17 and which extend forwardly of the pins as indicated at 25. The parts 25 are curved toward the jaw members and adapted to engage the same for closing the same. The parts 25 may be formed to act as cams to close the jaw members or in any suitable manner. The head portion is preferably provided with a finger piece 26 for operating the same and lateral strengthening flanges 27.

In the use of this wire twister, the jaws should be open, a wire 28 is threaded through a screw head or nut 29 and the strands thereof are then placed in crossed over relation between the pins 19, both of which are .shown upon one jaw member but which can be arranged with one on each jaw member. The strands extend rearwardly beyond the pins 21, Vone upon each side of the pins 21. The tube 7 can then be held as a plier, the wire guides will maintain the wire properly arranged. Then the lever 23 can be snapped down to lock the jaw members together and the tube can be pulled out to obtain the length of wire needed. To twist the wire, let the hand slide down to the small knob 14 and pull upon the rod 13 which will spin the tube 7 and spring 28 about two and a half terms per stroke. The lever 23 can then be operated to allow the spring 18 to open the jaws without marring the wire and the operation can be repeated from one screw to another depending upon the assembly desired.

It is evident that a very simple wire twister has been invented that can be easily operated in any restricted location in which the operation of the jaw members that grip the wire can be easily controlled in any restricted location.

I am aware that many changes may be made and various details of construction may be modified without departing from the principles of this invention so I do not propose limiting the patent granted otherwise than necessitated by the appended claims.

I claim:

1. In a wire twister, a tubular member, a pair of jaw members adapted for gripping a wire and having shank portions extending into one end of said tubular member, a pivot pin extending through said shanks and tubular member, a spring surrounding said pivot pin and engaging said shanks for opening said jaw members, a lock lever pivoted upon said tubular member and having parallel arms for engaging and closing said jaw members and means for rotating said tubular member and jaw members.

2. In a wire twister, a tubular member, means for rotating said member, a pair of coacting jaw members mounted in one end of said member and adapted for gripping a wire, yielding means for normally opening said jaw l members, a locking lever pivoted upon said member and having arms for engaging and closing said jaw members and wire guiding means associated with Said jawmembers for the purpose set forth.

3. In a wire twister, a tublar member, means for rotating said member, said member having an interior opening extending inwardly from its forward'end, said opening having straight opposed sides and arcuate ends connecting said sides, a'pair of coacting jaw members 'adapted for gripping a wire and having shanks engaging Said arcuate ends and fulcrum anges extending toward each other, yielding means for opening said jaw members and a lever having a U-Shaped portion pivoted to Said member and arms for engaging and closing said jaw members.

4. `In a wire twister, a rotatable member, means for rotating said member, Said member having an opening extending inwardly from its forwarrdend, a pair of coacting jaw members adapted for gripping a wire and having shanks extending into said opening, yielding means in said opening for opening said jaw members and a lever pivotally mounted upon said member and having parallel arms for engaging and closing said jaw members.

5. In a wire twister, a rod-like member, means for rotating said member in either direction, said member having an interior socket extending inwardly from one end, said socket having flat sides and arcuate surfaces connecting said flat sides, a pivot pin extending through said member and socket in parallel relation to said at sides, a pair of coacting jaw members adapted for gripping a wire and having shank portions extending into said socket, said pin extending through said Shanks whereby Said jaw members can move to open and closed positions on said pin, a spring Surrounding said pin for engaging and openingsaid jaw members and a lock lever pivoted upon the pin outside of said member and having arms for engaging and closing said jaw members.

6. In a wire twister, a rotatable member having a socket extending inwardly from its forward end, said socket having flat sides, a pair of coacting wire holding jaws having shanks extending into said socket between said dat sides, a pin extending through said socket and said shanks whereby said Shanks can move on said pin, a spring on said pin between said Shanks for opening said jaw members and a lever pivotally mounted upon said pin and having jaw engaging arms for closing said jaw members.

7. In a wire twister, a tubular member, a pair of jaw mcmbers adapted for gripping a Wire and having shank portions extending into one end of Said tubular member, a pivot pin extending thru said shanks and tubular member, a spring surrounding said pin and engaging said Shanks for opening said jaw members one of Said jaw members having spaced pins and the other jaw member having sockets for receiving Said pins for conning strands of wire therebetween, and a lock lever having parallel arms pivoted upon said tubular member for engaging both jaw members for closing the same.

8. in a wire twister, a rotatable member having a hollow front end, a pair of wire gripping jaw members having Shanks extending into said hollow end means for mov-ably supporting said Shanks, yielding means between said Shanks for normally separating the same, said jaw members having co-operating means for conning and guiding crossed wires between said jaw members and a lock lever having a U-shaped portion extending over said tubular member and pivoted thereto and having forwardly extending arms for engaging and closing Said jaw members.

References Cited in the le of this patent UNITED STATES PATENTS 303,643 Johnson Aug. 19, 1884 359,798 Mann Mar. 22, 1887 612,924 Grenier Oct. 25, 1898 814,320 Peck Mar. 6, 1906 1,084,103 ORourke Jan. 13, 1914 1,209,434 Hayden Dec. 14, 1916