US1813038A - Pliers - Google Patents

Description

July 7, 1931. A, ERNE 1,813,038

PLIERS Filed Sept. 25. 1929 JNVENIOE. 4264/ W. M

Patented July 7, 1931 JOHN A. ERNE, OF SPOKANE, WASHINGTON Application filed. September 23, 1829. Serial No. 394,522.

My invention relates to improvements in pliers and like implements and the main object is to provide holding means formed integral with the jaws or pivoted on each jaw,

said means particularly adaptable for engaging objects such as bolt heads to prevent rotation of the bolt when the same is being removed from or put in its place.

The preferred construction, with a modification is fully illustrated in the accompanyof a machine st-ructurethrough which exing drawings and hereinafter fully described, reference being had to the drawings in which,-

Fig. 1 is a face view of approximately the front half of a pair of pliers with my improved holding means formed integral with its jaw members.

Fig. 2 is a full side elevation or edge View of the pliers in Fig. 1, shown in operative position engaging the head of a bolt.

Fig. 3 is an enlarged modified view of the front part of a pair of pliers in same posi-'- tion as in Fig. 2.

Fig. 4 is a face view of Fig. 3 looking upwardly towardthe jaw members in said latter figure. Y

Referring to the drawings by reference numerals, 5-6 designate the usual counterpart members of a pair of pliers, crossed and pivotally connected at ,.7,. the jaw parts of said members being designated respectively as 5J and 6J. Said aws may be of considerably variable forms but a common type being illustrated having inwardly of their clamping faces 5F-6F an arched row of serrations or teeth 8 for grasping various objects, and inwardly of said toothed parts wire cutting means 9 of well known type.

' 10 in Fig. 2 represents any part or parts tends a round head machine bolt 11, the head of which is designated 111-1 and the nut 11N.

An object of my improved pliers is to hold or grasp the head of such a bolt or to grasp the perimeter of a flat-head type of bolt while the nut 11N'is being removed as with a wrench 12 indicated in dotted lines only. In the mechanical field it is well known that nuts as llN are exposed to the elements and corrosion will cause the nut to stick when it is desired to remove it and makes the said removal very difiicult and nearly impossible because the bolt willrotate with the nut.

My improved pliers are provided with a circular row of fingers l4, half of them on each jaw member 5J or SJ and all extending outwardly sidewise from the jaws and tapering, all of them terminating in inwardly radially directed ends, the said termini being in a plane at an acute angle to the plane of the pliers. For example, when the pliers are held in an inclined plane, jaws forward and down, the extremities of the fingers 14 are in a horizontal plane and spaced apart in such a manner that when a hand clamps the jaws SJ and 5d toward each other by pressing the handles 5-6 toward each other, the said fingers will engage the bolt head 11H on diametrically opposite parts, in 4 places when there are two fingers on each jaw. Thus the bolt head is securely held while a monkey-wrench is employed to remove the nut 11N. Where countersunk bolt heads, in wood, are to be engaged, the fingers 14 may of course be pressed into the surface around said head and then closed toward each other to engage the perimeter of such head. Obviously the finger members 14 are auton1ati-' cally self-adjusting to the perimetral rim of the head 11H when the plier handles are pressed toward each other.

' The common plane of the fingers 14 angular with relation to the plane of the pliers, is an important feature, the operator being enabled to exert downward pressure while holding the pliers angularly as shown in Fig. 2.

The number of fingers 14 is optional, it being in some cases likely that three or more may be used. on each plier jaw but two on each jaw have been found very efficient and being directed inwardly and diametrically toward the fingers of the opposite jaw, will readily engage and hold various sizes of bolt heads or the like.

The construction or mounting of the finger members shown in Figs. 3 and 4 is simply a modification of the principle of my improved ,pliers in which said fingers are not integral with the jaws, but formed in pairs 14J, one

pair to each jaw and integral with a head 14H, each said head having further a pin MP arranged to be journaled in an angular bore 17' inthe jaw. In said finger members the pins 14F are located outwardly of the finger parts. Thus when the plier jaws are spread to engage a bolt head, said members 14H are clamped against opposite sides thereof on a line diametrical of the bolt head 11H when the plier handles are squeezed and the fingers 14 automatically engage the bolt head, the pins 14F being located one in each jaw in a line drawn transversely through the aws, (see line 18 in Fig. 4). My improved pliers have now been fully described. 7

I claim: 1. In a tool of the class described comprising in part a pair of gripping jaws with parallel outside faces, plvot means rearward of said jaws and handle means extending from said pivot, an auxiliary jaw member rotatably mounted on each jaw, fingers on each said jaw extending radially inwardly and formed integral with each auxiliary jaw.

2. In a tool of theclass described comprising in part a pair of gripping jaws with parallel outside faces, pivot means rearward of said jaws and handle means extending from said pivot, an auxiliary jaw member rotatably mounted on each jaw, fingers on each said jaw extending radially inwardly and formed integral with each auxiliary jaw, said fingers of each latter jaw having their finger extremities terminating in a common plane and in chisel-like edges in a plane at an acute angle with relation to the common plane of the pliers.

3. The structure specified in claim 1 in 40 which the mounting means for said auxiliary jaws comprises for each an integral pin rotatably retained in the jaw, outwardly of said finger parts and transversely of the pliers.

In testimony whereof I affix my signature. JOHN A. ERNE.

Images