US2416002A

US2416002A - Wire twisting hand tool

Info

Publication number: US2416002A
Application number: US514962A
Authority: US
Inventors: John J Greer; Luongo Albert
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-12-20
Filing date: 1943-12-20
Publication date: 1947-02-18
Anticipated expiration: 1964-02-18

Description

J. J. GRER 'ET AL 2,416,002 WIRE TwIsTlzNe HAND Tool. Y I

Feb. 1s, 1947.

' Filed Dec. Vzo, 194s Patented Feb. 18,194?

WIRE TWISTING HAND TOOL John J. Greer, Conimicut, and Albert Luongo,

Wickford, R. I. Y

Application December 20, 1943, Serial No. 514,962

s Claims. l

This application relates to 9, device for twi-sting the ends of wire together, such for instance as safety wire to prevent the turning of a plurality of nuts.

In the present day practice of handling safety wire the operator engages the wire to be twisted by an ordinary pair of pliers and then turns those pliers about the axis of the wire to twist together the wire portions and tighten the same on the nut. The wires are then passed through the next nut and again similarly twisted. Considerable time is consumed in such manipulations and the evenness of the twist will vary with the skill of the mechanic.

One of the objects of this invention is to provide a hand tool by means of which the Wires may be gripped and then by the operation of the other hand the operator may twist the wires quickly several turns and then quickly repeat the operation as many times as necessary for the desired twists while maintaining the original grip on the wires.

Another object of this invention is to provide a device in which a substantial amount of pressure may be applied on the jaws for gripping the wire and while this pressure is applied by the hand the jaws may be rotated by mechanism operated by the opposite hand.

A further object of this invention is to provide a device which while accomplishing the results above mentioned may be easily carried about in the hand and be sufficiently light to be readily handled while strong for the purposes intended.

With these and other objects in View, the nvention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawing:

Fig. 1 is a central sectional view through the tool;

Fig. 2 is an elevation looking at the tool at right angles to the showing in Fig. 1;

Fig. 3 is a sectional view on line 3 3 of Fig. 1; and

Fig. 4 illustrates a plurality of nuts, two of which have been wired with the tool in gripping position for twisting the wires into a relation to bind the third nut in position.

In proceeding with this invention we have mounted the rotating parts inball bearings so that while pressure may be applied through the ball bearing rotation may still easily occur. The arrangement is such that there is a carrier for a pair of jaws, which jaws may be manipulated through the axial movement of a shaft, while by reason of the rotary movement of the shaft the jaws of the carrier may be rotated about the axis of the gripped wires. Manipulation by one hand axially moves the shaft while manipulation with the other hand will serve to rotate it.

With reference to the drawing we have provided a cylindrical body Il) in which a carrier designated generally II is rotatably mounted by means of ball bearings I2 and I3. This carrier II is tapered as at I4 at its forward end. A pair of jaws I5 and I6 are pivoted as at II and I8 on bearing plates 2| so that their gripping ends I9 may be moved apart while their inner ends 20 are moved together. The jaws are so shaped and cut away as to permit of such action about their pivot. The plates 2| are secured in place by a pin 2|.

A bearing 22 is held in position by a set screw 23 for rotatably and axially slidably mounting a shaft 24. An abutment 25 is xed on the shaft While a spring 2B acts between the bearing 22 and the abutment to urge the shaft axially away from the jaws or to the left as shown in Fig. l. Links 21 connect the ends 20 of the jaws with the shaft 24 so that axial movement under in'- fluence of the spring will spread the jaws at their gripping ends I9.

In order to move the jaws into closed or gripping position such as shown in Fig. 1, I have provided a collar 28 consisting of two parts, there being one part 29 which engages the abutment while the other part 30 is rotatably related thereto through ball bearings 32, all being associated by means of the shell 3l. Levers 33 are pivoted as at 34 on the body I0 and are provided with arms 35 which extend inwardly through slots in ratchet 43 connected to the sleeve 4I while the handle 44 carries a portion 45 to lock it to the sleeve while permitting relative rotation. A pawl 4S carried by the handle is spring-pressed as at 41 to engage the ratchet so that movement may occur in one direction while the handle is locked to the sleeve during movement in the opposite direction.

It will be apparent from the foregoing that axial movement of the sleeve 4I will cause rotation of -the shaft which in turn will rotate the jaws and carrier in the ball bearing mounting of the carrier so as to twist wires which are engaged.

In operation 'a nut 58 which has a hole 5l therethrough will have one portion 52 of a wire pass through this nut while the other portion 53 of the wire will be extended about the nut. The jaws I9 will then grip the wire and by pulling on the handle 44 these will be rotated about the work as an axis to twist the wires together, Several pulls of the handle may be necessary to provide the number of twists desired to tighten up the wire in the manner required. The wire Will then be passed through the next nut 54 and around the outside of this nut as before. The wire will then be gripped at the point 55 and again twisted by pulling on the handle a sufcient number of turns as indicated at 56 to tighten up the wire as required. The wire will then be passed through the nut 57 and around the nut as before while the ends 58 of the wire will be grasped as illustrated in Fig.` 4 and the handle again pulled to rotate the jaws so as to twist the portions 59 and 69 of the wire tightly as indicated at 56 between the previous two nuts. This operation may be very quickly performed in a fraction of the time usually consumed in performing three such twisting operations in the manipulation of safety wires of this character.

If desired a cutter may be provided as at Bi which may be utilized in the same manner as in ordinary pliers.

We claim:

l. A portable hand tool comprising a body, a shaft in said body a pair of jaws secured to said shaft, means to rotatably mount said shaft and jaws in said body, means to manually move said jaws toward each other including a collar secured to said shaft, and a lever for moving said shaft through said collar to close said jaws, and means to rotate said jaws relative to said Vcollar and lever while holding the jaw in gripping position.

2. A portable hand tool comprising a body, a carrier rotatably mounted in said body, a pair of jaws pivotally mounted in said carrier to move toward and from each other, an axially movable shaft mounted in said carrier links connecting said jaws with said shaft for. movement of said jaws toward and from each other by endwise movement of said shaft, an abutment on said shaft, a collar engaging said abutment, a pair of levers pivoted on said body having portions engaging said collar for moving said shaft endwise by movement of said levers, and means for rotating said shaft relative to said collar and levers to rotate the carrier and said jaws` 3. A portable hand tool comprising a body, a carrier rotatably mounted by Vball-bearings in said body, a pair of jaws pivotally mounted in said carrier to move toward and from each other, a shaft mounted for axial movement in said carrier, links rotatably connecting said jaws and carrier with said shaft and for movement of, said jaws toward. and from' each other by endwise 4 movement of said shaft, an abutment on said shaft, a collar having a ball bearing rotatably connected with said shaft and engaging said abutment, a pair of levers pivoted on said body having portions engaging said collar for moving said shaft endwise by movement of said levers, and means for rotating said shaft relative to said collar and levers to rotate the carrier and said Jaws.

4. A portable hand tool comprising a body, a carrier rotatably mounted in said body, a pair of jaws pivotally mounted in said carrier to move toward and from each otheruan axially movable shaft mounted in said carrier, links connecting said jaws with said shaft for movement of said jaws toward and from each other by endwise movement of said shaft, an abutment on said shaft, a collar engaging said abutment, a pair of levers pivoted on said body having portions engaging said collar for moving said shaft endwise by movement of said levers, said shaft having a helical groove therein, and a handle carrying a nger to engage said groove to rotate said shaft upon axial movement of said handle.

5. A portable hand tool comprising a body, a carrier rotatably mounted by ball bearings in said body, a pair of jaws pivotally mounted in said carrier to move toward and from each other, a shaft mounted for axial movement in said carrier, links rotatably connecting said jaws and carrier with said shaft and for movement of said jaws toward and from each other by endwise movement of said shaft, an abutment on said shaft, a collar having a ball bearing rotatably connected with said shaft and engaging said abutment, a pair of levers pivoted on said body having portions engaging said collar for moving said shaft endwise by movement of said levers, said shaft having a helical groove therein, a handle carrying a finger to engage said groove to rotate said shaft upon axial movement of said handle.

6. A portable hand tool comprising a body, a carrier rotatably mounted by ball bearings in said body, a pair of jaws pivotally mounted in said carrier to move toward and from each other, a shaft mounted for axial movement in said carrier, links rotatably connecting said jaws and carrier with said shaft for movement of said jaws toward and from each other by endwise movement of said shaft, an abutment on said shaft, a-collar having a ball bearing rotatably connected with said shaft and engaging said abutment, a pair of levers pivoted on said body having portions engaging said collar for moving said shaft endwise by movement of said levers, said shaft having a helical groove therein, a handle rotatably mounted on said shaft and connected `through means for movement in one direction with said helical groove to rotate said shaft upon relative axial movement of said handle.

7. A portable hand tool comprising a body, a carrier rotatably mounted by ball bearings in said body, a pair of jaws pivotally mounted in said carrier to move toward and from each other, a shaft mounted for axial movement in said carrier, links rotatably1 connecting said jaws and carrier with said shaft for movement of said jaws' toward and from each other by endwise movement of said shaft, an abutment on said shaft, a collar having a ball bearing rotatably connected with said shaft and engaging said abutment, a pair of levers pivoted on said body having porti-ons engaging said collar for moving said shaft endwise by movement of said levers, said shaft having a helical groove therein, a handle rotatably m0unt+ ed on said shaft and connected through means for movement in one direction with said helical groove to rotate said shaft upon relative axial movement of said handle.

8. A portable hand tool comprising a body, a shaft in said body, a pair of jaws secured to said shaft, means to rotatably mount said shaft and jaws in said body, means 4to manually move said jaws toward each other including a collar secured to said shaft, and a lever for moving said shaft through said collar to close said jaws, and means to rotate said jaws relative to said collar and lever while holding the jaw in gripping position, said rotating means including a handle and an overrunning clutch connecting said handle in operating relation with said means.

JOHN J. GREER. ALBERT LUONGO.

REFERENCES CITED The$ following references are of record in the nle of this patent:

UNITED STATES PATENTS Hirsch Mar. 3, 1936