US 2387928 A
Description (OCR text may contain errors)
Oct. 30,1945. R MONNLER 2,387,928
HAND TOOL v Filed Jan. 27, 1944 2 Shets-Sheet 1 INVENTOR. eussa no/v/v/m.
0a. 30, 1945 R. MONNIER 2,387,928
\ HAND TOOL Filed Jan. 27, 1944 2 Sheets-Sheet 2 15 10 I@WGY@K@ INVENTOR. 2053a MO/V/V/E/Q.
Patented Oct. 30,1945 7 w f g 2,387,928
UNITED STATES PATENT OFFICE HAND TOOL Russel Monnier, Detroit, Mich.
Application January 27, 1944, Serial No. 519,845
3 Claims. (CI. 81-51) This invention relates to hand tools and has securely grasping the terminal during the wire particular reference to a special tool for entering inserting operation. the ends of a stranded wire into an aperture. It Referring now more particularly to the drawis particularly designed for entering stranded ings, it will be understood that in the embodiment wire into the hole of a stake-on lug or terminal. herein disclosed, my improved device consists of In utilizing certain types of lugs or wire tera pair of jaws l0 and II, having complementary minals it is very difficult to insert the stranded handles 12 and I3, which are pivoted at M, to wire in the aperture of the lug, preparatory to the function in the manner of a pair of pliers. The staking operation, particularly is such insertion device is provided on one side (Figs. 1 and 3) with difiicult where the aperture is not exactly round a circular bore having inclined side walls IE. or where there is some interior obstruction in the The device is provided on the opposite side (Figs. hole, as is the case when a lug is used as shown 2 and 3) with a circular bore l1, having substanin the drawings. tially straight walls I8. The bores l5 and H In certain applications the lugs "or terminals are communicate with one another, but the bore I1 is secured to the fixtures before the latter are wired, 15 larger than the reduced end l9 of the bore l5,
and often times they are secured in inacessible and is ofi center with respect to the center of the places, where it is impossible to insert the wires, bore I5 as shown in Figs. 2 and 3 to accommowithout damaging the ends, or displacing some of date the special lug or terminal 20, which is prothe fine strands of wire. vided with a central passageway 2|, shown in It is therefore an object of the invention to dotted lines, which passageway 21 is offset with provide a tool which will enable the operator to respect to t longitudinal axis of the 111 0.
efiiciently and quickly enter the stranded wire in The bore H is designed to accommodate and the hole. firmly hold the lug 20, while the stranded wires Another object of the invention is the provision 22, are brought into position for e try into the of a tool of the character described which is 25 bore l5 and hence into the passageway 2| of the adapted to automatically bring the multiple ends terminal 20. The inclined walls l6 of the bore 15 of a stranded Wire into strict conformation with 7 guide the individual strands of the wire 22 comthe hole to be entered. pressing them into a reduced circumference for Another object of the invention is the provision fi a ent y into the op ning of t e terminal 20, of a tool of the character described, which is 0 as shown in Fig. after w ch the term nal 20 adapted to securely grasp the lug while the I may be secured to the wire 22. by ng, solderstranded wire is being inserted in its aperture. s. weldin Other u e means- The foregoing objects and other advantages of In Fig. 5 I have illustrated a modified form of the invention will become more apparent as the v ce w erein a plurality of ope gs are p description proceeds, reference being made from v t a mm v r iz f lu s and time to time, to the accompanying drawings, in w1res.
which: In Fig. 7 I have illustrated a modified form of Fig. 1 is a side elevation of a device embodying ev ce in wh ch the jaw II, is machined out as my invention. at 23, to accommodate a spring detent 24, which Fig. 2 is a reverse side elevation of the device 40 s Secu ed t ereto by welding or other suitable illustrated in Fig. 1. means. The spring detent 24 is provided with an Fig. 3 is an enlarged fragmentary detail taken end member 25, which has a semi-circular slot substantially on the line 3-3 of Fig. 1. p 26, adapted to contact the outside wall of the lug Fig. 4 is a top 1an view of the device illustrated 20, to firmly hold the s me in p i i uring the in Fig. 2, with elements to be worked upon in operation of inserting the wire 22. This spring adjusted position. detent holding element automatically compen- Fig. 5 is a modified form of the device illussates for any wear in the device, which might trated in Fig. 1, with a plurality of openings allow the terminal 20 to fit loosely.
adapted to accommodate various size elements. Having described my invention, what I claim Fig. 6 is a view similar to Fig. 4, with parts and desire to secure by Letters Patent is:
broken away and showing the position of the ele- 1. A device of the character described comprisments worked upon after the insertion of the ing a pair of jaws, means in said jaws for securely stranded wire in the terminal. holding a wire terminal, and means in said jaws Fig. 7 is a modified form of the device illustrated for assisting the endwise entry of a stranded wire in Fig. 2, showing the use of a spring detent for into an opening in said terminal, both said means 3. In a device of the character described the combination of a pair of co-acting jaws, each jaw having cut-out portions on their inside surfaces, the cut-out portions being arranged to form communicating bores, one of which is straight and the other of which is tapered, at least one of said jaws being provided with a spring member adapted to restrict the area of one of said bores;