US1541248A - Pliers - Google Patents

Description

1I/County ERCARLSQN,

E. R. CARLSON June 9, 1925.

Patented .lune 9, 1925.

PATENT oFFicE.

ELMER R. CARLSON, F GALVA, ILLINOIS.

PLIERS.

Application filed May 17,

To all whom t may concern:

Be it known that I, ELMER R. CARLSON, a citizen of United States, residing at Galva, inv the county vof I-'Ienry' and State of Illinois, have invented certain new and useful Improvements in Pliers, of which the following isa specification, reference being had therein to the accompanying drawing.

j The present invention relates to pliers, and aims to provide a novel and improved implement ofthat kind including effective inea-ns `between the handlesand jaws for moving"` the jaws toward one another with maximum power when gripping the handles in the hand;

Another'object is the provision of such a tool which combines therein a bolt and nut wrench, a pipe wrench, a wire cutter, a hand vise, and a slip joint adjustment for the jaws.l

With the foregoing and other objects in view, which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts, as hereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed, without de-f parting from the spirit of the invention. I

Figure 1 is a side elevation of the pliers showing the aws adjusted in close relation.

Fig. 2 is a` side elevation of the tool showing the adjustmentl with the jaws spaced apart, and also showing the jaws swung away from one another in dotted lines.

Fig. 3 is atop view of the tool with the parts as seen in Fig. 1.

Fig. 4 is a cross section on of Fig. 1.'

Fig. 5 is a fragmentary elevation of one lever, showing the pivot bolt in cross section.

Fig is a. similar view showing the other lever in dotted lines in position as when changing the pivot bolt from one position to another.

The pliers comprise the levers and 11 crossing one another andhaving the broadened portions 12 and 13, respectively, at the, point of crossing bearing against one another side by side. Said levers have the respect-ive complementary jaws 14 and 15 beyond the portions 12 and 13. The confronting faces of the jaws have the flat pincer por# tions 16 at the ends of the jaws, the toothed the line 4 4 1924. semi no. 718,888.

ornotche'd pipe wrench portions 1T between the ends of the jaws, and the wire cutters 18, and 18, respectively, at the bases of the jaws, whereby the pliers can be used as pin'cers, a pipe or rod wrench, and a ywire cutter, as will be'apparent.

The crossing portions 12 and 13 of thelevers are pivoted together adjustably by pivot bolt 19 which extends through said portions transversely, and which has ahead 20at one endand a nut 21 threaded thereon at the other terminal. The bolt or pivot member 19 has flat sides, and the portion 13 of the lever 11 has a non-circular opening 22 receiving thebolt 19, whereby said bolt and lever cannot turn relatively to one another. This prevents the bolt from turning in the opening 22. The portion 12 of the lever 10 has transversely spaced circular openings 23 and 24 connected by a Slot 25 which is of a. width slightly less than the diameter of said openings, and the bolt 19 can be disposed in either o-f said openings for adjusting the levers and jaws transversely relatively to one another to either of the positions shown in Figs. 1 and 2. In the ordinary operative positions of the levers 10 and 11, t-he Hat sides of the bolt 19- are disposed at an angle with the slot 25, thereby maintaining the levers in theirv relative pivotal adjustment, but when the levers are turned to a position substantially at right angles with one another, as Seen iny dotted lines in Fig. 6, the bolt 19 can then pass through the slot 25 for shifting the bolt from one opening of the portion 12 to the other. In this way, the pivotal adjustment of thev levers can be changed when the levers are moved to the position as seen in Fig. 6, and when the levers are swung toward one. another to operative position and the bolt 19 is turned in eitheropening 23 or 24, the bolt is retained in the corresponding opening, to maintain the pivotal adjustment. This adjustment per se is well known, but is taken advantage of in thepresent tool. 1

The lever 11 has a handle 26, the lever l1144 being longer than the lever 10, and a handle 27 is pivoted, as at 28, to the short lever 10. The handles 26 and 27 extend from those arms of the levers 11 and lO'opposite to the jaws. The. lever 27 has a lateral extension 29 projecting from the pivot 28 toward the handle 26, whereby the handle pivot 28.l The link 30 is connected to the portion o-r arm 29 by the pivot 31, and the link 30 is connected to the jaw 15 by the rivet 32. The rivets constituting the pivots 28 and 3l are countersunk, as seen in Fig. Il, soV as not to interfere with the link 30 andl lever 11, respectively. "The head 2O oit' the bolt 19 is flattened oili at one side .to accommodate the link 30 when the jagws are brought together, as seen inVY Fig. l'. The inner` side ofthe lever l1 is also bevelled,

as at 34C, sc that therportion 29 will notYY catch against the lever ll when swinging the handles.v toward one another.;

By the provision of the handle 27 pivoted to the lever 10 and the link connection between the handle 27 and lever ll, a powerful action of the jaws is provided when the handles 26 and 27 are gripped in the hand and forced toward one another. rl`hus, the handle 27 swings toward the handle 26 relativelyr to the lever 10, and applying a thrust to the link 30.YV When the jaws grip the object betweenY them, so as to limit the swinging movement oithe levers l and ll toward one another, there is a tendency for the lever or handle 27 to swing toward the handle 2G about'the pivot 3l, thereby pulling -onothe pivot 28 in Va direction along an arc around the pivot 3l, thereby applying considerable powerto the levers l0 and ll for moving the jaws' toward one another. Because of the link connection between the levers -and`27, the lever or handle 27 has a swinging Inovement relatively to the lever i0, so that the lever or handle 27 has a greater swinging motion relatively to the lever 1l than doesthe lever 10 soV as to obtain al more powerful purchase.

*When the lever l0 is? swung to a position substantially at'right angles with the lever l1, the pivot bolt 19 is turned so that it can pass through the slot from the opening 23 into the opening 24, er vice versa, thereby positioning the jaws either close together or spaced apart` as seen in Figs. l and 2, respectively. This slip joint connection of the levers l0 andi-l1 permits the levers l() and ll to be adjusted transversely relatively 'to one another, and the link connection between the lever ll and handle 27 permits ot such adjustment without interfering with the lever action when the handles are swung toward one another. i

' 'Having thus described the invention, what is claimed as' new is:-

l. Pliers comprising crossing levers having a pivot joint at their point of crossing and cooperable jaws at one end, a handle pivoted to one oi' said levers, the other lever having` a handle cooperable with the firstname'd handle to be grasped in the hand for moving said handles towardgone another, said handlesf being: at-.thos'e extremities of the levers opposite to the jaws, and a linkV pivoted to the iirstnanied handle and secondnamed lever with said link crossing, between its pivots, vthe lirstnamed lever.

2. Pliers comprising levers crossing one another and having a pivot joint at the point of crossing, eachl lever nhaving an armprovided with a jaw and said jaws cooperating, a` handle pivoted to one` lever, the other lever 4having a handle cooperable with thetirstnamed handle toY begraspe'd'in the hand for moving said handles toward one another, said handles being at those terminals oi' the levers opposite to said jaws, the firstnamed handle having a portion extending at an angle toward the secondnamed lever, and a link pivoted at one end to said portion and at its other end to the secondnamed Ylever adjacent tothe jaw ot saidA lever.

Pliers comprising levers crossing one another and having a pivot j ointat the point of crossing, each lever` having an` arm provided withL a and said jaws cooperating, a` handle pivoted to one lever, the other lever having a handle cooperable with' the lirstnamed handle to be grasped in therhand ior moving said handles toward one another, said handles being at those terminals of the levers opposite to said jaws, the lirstnamed handle having a portionextending at an angle toward the secondnamed lever, and a link pivoted at oneend to said portion and at its other end to the secondnamed lever adjacentj to the'jaw ofsaid lever, said link crossing, between its pivots, the lirst lnamed lever and being arranged obliquely relatively to said iirstnained lever. 'i

l. Pliers comprising levers crossing one another and .having a pivot joint at the point of crossing, said levers having cooperable jaws at one end, a handle pivoted to vone lever, the other lever having a handle cooperable with the firstnamed handle to be grasped in the hand for moving the handles toward one another, and a llink pivoted at one end to the firstnamed handle and at its other end to the secondnamed' lever adjacent t-o the jaw of said? lever and arrangedto receive a compressive thrust when thehandles are moved toward one another so as to force the jaws toward one another.

5. Pliers comprising levers crossing one another andhaving a pivot joint at their point of crossing,said levers' having cooperable jaws at one end, bell crank lever pivoted at its elbow to one of said levers, the long arm of said bell crank lever providing a handle, the other of said crossing levers having a handle cooperable with' the afore-y llO lill) said handle to be grasped in the hand :for moving said handles toward one another, the short arm of the bell crank lever projecting toward the secondnamed of the crossing levers, and a link pivotecl at one end to said short arm and at its other end to the seeondnamed of the crossing levers adjacent to crossing levers and being arranged oblique- 10 ly thereof.

In testimony whereof I hereunto alliX my signature.

ELMER R. CARLSON.

Images