US1539526A - Double pliers - Google Patents

Description

May 26, 1925. 1,539,526

C. R. SWICKARD DOUBLE PLIERS Filed Feb. 9, 1925 CHARLES R-SWICKARD- C25,? law} 1 fluommf Patented May 26, 1925.

UNITED STATES CHARLES R. SWICKARD, 0F COLUMBUS, OHIO.

DOUBLE PLIERS.

Application filed February 9, 1925.

To all whom it may concern:

Be it known that 1, CHARLES R. SwroK- ARI), a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Double Pliers, of which the following is a specification.

In soldering two electric conducting wires together or a wire to another part of different form it is highly important that the two wires or the wire and the other part be held in contact while the solder is being applied. The reason for this is that the wires or parts to be soldered are better conductors than the solder and their conductivity should not be impaired by the interposition of solder in the conducting line. To hold such conductors by the hand with sufficient steadiness to permit soldering without impairing the conductivity has heretofore been a very difiicult and tedious task especially where the members to be soldered are already attached to the apparatus or are short or are not readily transferable to an ordinary vise. Moreover in case the parts to be soldered are of difierent diameters two vises would be required, because two parts of different diameters cannot usually be similarly held between the two jaws of a single vise.

The object of my invention, therefore, is to provide an improved instrument of simple, economical and portable form by which the terminals of two wires of the same or different diameters, or a wire and another part or two other parts not of wire but of different tl'iicknesses may be firmly grasped and steadily held with one hand to occupy the desired relation to each other while the molten solder to connect them is being applied and cooled.

The invention is embodied in the example shown in the accompanying drawing and set forth in the following description the features of novelty being finally claimed.

In said drawing Fig. 1 is a view in elevation lookmg at the edges of the two pairs of pinchers.

Fig. 2 is a view looking at the side of the device with the jaws closed.

Fig. 3 is a view like Fig. 2 with the jaws of the two pairs separated.

Fig. 4 is a section on the line IVIV Fig. 1 illustrating the pivot pin of the pincher levers as rotatable with reference to all the members.

Fig. 5 is a similar view showing a modi- Serial No. 7,812.

fication or how two of the pincher levers can be secured from rotary movement relative to the pivot pin.

Fig. 6 is a fractional detail of the pinchers showing how the ends of the jaws can be parallelly bent.

In the views and referring more particularly to Figs. 1 to 4 inclusive the character 10 designates the pincher handle and 10 the jaw thereof. The pincher levers cross each other as usual in the most ordinary form of pinchers so that by pressing one lever toward the other with the hand the jaws are moved toward each other to pinch and hold an object placed between them. In carrying out the invention as illustrated in the drawing two pairs of the pinchers are united side by side by means of a single pivot pin 11 fitting closely in the pivot openings and having its opposite ends expanded in rivet form as shown to tie all the pincher members together but leaving each lever free to be moved on the pivot pin as more particularly shown in Fig. 4:.

I propose that the jaws of the pincher levers shall be slightly bent out of line with the handle portions so as to provide ample space between the two jaws to arrange with the fingers the conductors to be soldered. I propose also that the handle portions 10 of the pairs shall be bowed outward from each other as best shown in Fig. 1 so that one pair alone may be more easily manipulated while the other is left free.

A modification of the construction can be made by pinning or fixing, as by pins 12, one of the pincher members of either or both pairs to the pivot pin 11 leaving the other pincher member or members free to rock 011 the pivot but this will in my View unnecessarily add to the expense of manufacturing the instrument although such modification can be used to carry out the purpose of my invention.

With the instrument constructed as described it will be noted that when two separate objects are pinched at the same time between the jaws and all the jaws held firmly within one hand there can be no accidental movement of the pinched objects relative to each other because there can be no considerable sidewise oscillation of the pairs of pinchers in relation to each other that being prevented by the close fit of the single pivot pin.

In practice one wire or conductor terminal is first suitably held between the jaws of one pair of pinchers and then the other conductor member adjusted to it as desired between the jaws of the other pair after which those jaws pressed on the conductor all while in the same hand. \Vhen thus prepared the solder is readily applied with the other hand.

In Fig. 6 I have illustrated how the ends" of each pair of jaws may be parallelly bent to make such ends useful in reaching otherthe p'incher members What I claim is:

1. An instrument of the kind described comprising two pairs of pinclier members placed side by side on a pivoting member common to both pairs, said pivoting member adapted to prevent lateral oscillation of relative to each other.

2. An, instrument of the kind described comprising two pairs of pincher members each pair including two jaws and operating handles therefor, said pinohermembers ful' crumed side by side on a pivoting member common to both pairs, said pivoting member adapted to prevent lateral oscillation of the pincher members relative toi each other.

CHARLES R. SWICKARD.

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