US2243086A - Pliers - Google Patents

Description

y 1941- M. A. BUETTELL 2,243,086

PLIERS Filed Nov. 9, 1937 2 Sheets-Sheet 1 m 2? O f 'IIIIIII.

172716722507- w M71) /0 2 Lu- 5 May 27, 1941.

M. A. BUETTELL 2,243,086

PLIERS Filed Nov. 9, 1937 2 Sheets-Sheet 2 3&7? uZ. Eaeie Z Z fy Patented May 27, 1941 7 2,243,080 runs Marc A. Buettell. Sycamore, IlL,

commutator a no 2Claims.

-This invention relates to pliers and has ior its object to provide a new and improved device of this description.

The invention struction, easy to handle and eflective in operation.

The invention has other objects which are pointed out in the accommore particularly the drawings, Fig. 1 is a panying description. Refen'ing now to of device embodying the inview of one form vention;

Fig. 2 is an edge view of the construction shown in Fig. 1, with parts omitted;

Fig. 3 is a view similar to Fig. 1, with parts omitted, showing the jaws in position to engage larger pieces;

Fig. 4 is an enlarged sectional view taken on line 4-4 of Fig. 1;

Fig. 5 is an enlarged sectional view taken on line H of Fig. 1;

Fig. 6 is a sectional view taken on line 6 6 of Fig. 5 with parts omitted;

Fig. 7 is a view showing the method or changing the jaws of the pliers for large or small articles:

Fig. 8 is an enlarged sectional view taken on line 8-8 oi'Flg. 1: and

Fig. 9 is a diagrammatic view 01' the transformer.

Like numerals refer to like parts throughout the several figures.

Referring now to the drawings, in the construction illustrated there is shown a pair of pliers consisting oi the handles I and 2 which are of insulating material. Connected with these handles are the jaws 3 and 4 01' the pliers.

handles in any de- It is preferably used herein and is shown in Fig. 4, where the jaw 3 has a member 5 which projects into the hollow handle 2. The projection F is provided with a threaded Partnership com Becker and Louis 0. Becker Application November 9, 1937, Serial No.

opening 8 which is Company, Sycamore, 11].,

posed or John Walter Preferably tapered from the outer end toward the bod 8 portion thereof.

are tightened up, between the pieces I! and I6 and tions of the laws 3 and 4. This construction makes it unnecessary to have holes through the carbon pieces.

and Fig. 3 shows the arpieces. This result is sejaws which have enlarged The pin l2 has opposed flat sides one of the jaws and the jaws insulated from each other. This pin construction is an important point in the construction of the pliers and must accomplish certain functions. It must connect the jaws, but be electrically insulated to prevent transfer of current between the jaws. It must be fastened rigidly to one of the jaws with suflicient mechanical strength to take the pressure of the clamping the jaws together onto the piece to be heated. It must be locked in a definite position so that the flattened portion is held fixed and must be arranged to allow slipping of the jaws from open to closed position and permit holding in each of these positions. Furthermore, the material which electrically insulates the pin and .the jaws must also stand a very high heat, since the heat from the ends of the jaws travels back through this pin.

The construction of this pin l2 and associated parts is shown in Fig. 5. In this construction an insulating bushing 23, preferably of mica, is pressed into the straight hole in one jaw. Insulating washers 24 and 25 are placed on each side of the jaw containing the insulating bushing. Steel washers 26 and 21 are placed on the outside of the insulating washers 24 and 25. The end of the pin is screwthreaded and there is a nut 28 on this screwthreaded end which is tightened up to clamp and hold the parts in position. The steel washer 26 under the nut 28 is provided with a key-way into which is received a steel locking pin 29 which is carried in a slot in the threaded end of the pin. This therefore locks the washer and the pin together. There is an insulating pin 30 which passes through a hole 3| in the steel washer and which also passes through the insulating washer 25 and through the jaw 3, as clearly shown in Figs. and 6. This looks the washer 25 and the pin l2 to the jaw 3 and prevents the pin l2 from turning. The jaw 4 is pivoted on the pin, that is, it rotates or rocks on the pin, so that the two jaws may be opened and closed. When it is desired to move the pin to either of the enlargements Ill or H, the jaws are moved to the position shown in Fig. '7, whereupon by relative movement of the jaws, the pin i2 can be moved nto either enlargement.

The device is connected in circuit in any deaired manner. As herein shown, I provide a sransformer 32 with which the conductors I and Ta. are connected. This transformer is connected in circuit in any desired manner, as by means of a plug 33 and a flexible cord 34 which may be of any of the usual types, so that the device can be easily and quickly plugged into circuit. The conductors I and 1a are connected to the transformer in any desired manner. As herein shown, see Fig. 9, the conductor 1 is connected to one terminal of the transformer coil 35 and the conductor 1a to the other terminal of the transformer coil. The transformer coil 36 is connected in the circuit by the cord 34. I prefer to provide means for having a high or low temperature for the device that is heated between the jaws. This is secured in any desired manner. One method is shown in the drawings wherein the transformer is provided with the switches 31 and 38. The switch 38 connects the conductor 39 of tor 40 connecting with the transformer coil 36. The switch 31, when in the high position, connects the conductor 4| with the coil 36 at a point intermediate its ends, as shown in Fig. 9. It also connects the conductor 4! with the conducthe cord 34 with the conducmay be varied in many particulars tor 42, which is the other conductor in the cord 34. When the switch 31 is in the low position, it connects the conductor 43, which is attached to the end of the transformer coil 38, to the conductor 42 which is one of the conductors of the cord 34. It will therefore be seen that when the switch 31 is in its high position, only a par-t of the transformer 36 is in circuit and when it is in its low position, the entire transformer coil is in circuit. The conductors 1 and la are preferably connected to the transformer coil 35 by soldered connections 45 and 46. The other connections 41, 48, 49, and 5| are preferably made by Jasper connections, such as shown in the Jasper Patent No. 1,700,985, issued February In the use of the device, the parts, such as pieces of pipe, electrical conductors, rods, wires or other metal parts, to be connected together are placed in between the jaws of the pliers and in engagement with the carbon pieces I3 and I4 and the current is then passed through the jaws and through the pieces and they are heated to the desired heat, and the solder can then be easily and quickly applied to solder them together, or the heat may be such as to fuse the pieces together. It will be seen that by means of this device, I can easily and quickly heat parts which are to be soldered together and apply solder thereto, or I can heat them so as to fuse them together.

Means is provided for aligning the narrow slot portion between the holes l0 and II with the flat sides 2| and 22 of the pin 12. As herein shown, this result is secured by means of a projection 52 on the handle portion of one of the jaws, as, for example, jaw 4. When the jaws are open, this projection engages the upper side of the handle portion of jaw 3. This aligns the narrow slot between the holes in and H with the flat sides 2! and 22 of the pin i2 when the parts are in the position shown in Fig. '7.

I have described in detail a particular construction, but it is of course evident that the parts without departing from the spirit of the invention as embodied in the claims hereto appended, and I therefore do not limit myself to the particular construction shown.

I claim:

1. A pair of pliers comprising two jaws, means for connecting them in an electric circuit, a pivot pivotally connecting said jaws together, electrically insulated from one jaw, said jaws havin opposed end pieces provided with opposed elongated recesses having flat walls, said recesses extending only part way through said end pieces. there being a solid portion of each jaw beyond each recess, said recesses being open at one side, flat elongated carbon pieces in said recesses, engaging the flat wallsof said recesses and having projecting portions projecting from said jaws toward each other, clamping conducting pieces for closing the open sides of said recesses and engaging the sides of said carbon pieces, and means for fastening said clamping conducting pieces in position to clamp the carbon pieces tightly in place, whereby a maximum area of contact between said jaws and carbon pieces is secured and oxidation thereof minimized.

2. A pair of pliers comprising two jaws, means for connecting them in an electric circuit, a pivot pivotally connecting said jaws together, electrically insulated from one jaw, said jaws having opposed end pieces provided with opposed eloning projecting portions projecting from said jaws sure on the carbon pieces when the jaws are toward each other, clamping conducting pieces closed on the article with which the pliers are used.

engaging the sides 01' said carbon pieces, and 10 MARC A. BUE'I'I'ELL.

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