US2445480A - Pivoted jaw plier wrench with slotted fulcrum guide - Google Patents

Description

J. P. GANTT PIVOTED JAW PLIER. WRENCH WITH SLOTTED FULCRUM GUIDE July 20, 1948.

2 Sheets-Sheet 1 Filed NOV. 2, 1944 VIV/AI gl July 20, 1948. 1 P GANTT 2,445,480

PIVOTED JAW PLIER WRENCH WITH SLOTTED FULCRUM GUIDE Y Filed Nov. 2, 1944 2 Sheets-Shes?I 2 IIIW Patented July 20, 1948 UNITED STATES PATENT oFFICliV PIVOTED JAW PLIER WRENCH WITH SLOTTED FULCRUM GUIDE ,y

Jacob Plannie Gana, Rook H111, s. o. Application November 2, 1944, serial No. 561,520

' 1 Ctaim.

This invention relates to a set of pliers or a wrench being especially adapted for use for loosening the nuts on the threaded bolts in battery cable terminals where they clamp onto the terminal posts of storage batteries. Such nuts on the bolts on the clamps of the battery cables usually become corroded and are very hard to loosen, and it is an object of this invention to provide a set of pliers which can exert a gripping and crawling action on these nuts to firmly grip the same and loosen the same where an ordinary wrench would ordinarily slide off the nut or disgure it to the point where a wrench cannot engage it properly.

It is an object of this invention to provide a wrench or set of pliers wherein the jaws are adapted to slide relative to each other as they are moved toward closed position to thus iirmly grip a nut and turn the same relative to the bolt on which it is situated.

Another object of this invention is to provide a wrench or set of pliers in which the size of bolts or nuts to be gripped can be most effectively handled by a quick adjustment of the position the jaws will occupy apart from each other with the handles in a given position.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds and when taken in connection with the accompanying drawings, in which- Figure 1 is a side elevation of the wrench or pliers showing the same in closed position;

Figure 2 is a side elevation of the other side of the wrench or pliers showing the same inverted and in open position;

Figure 3 is a bottom plan view of Figure 1;

Figure 4 is a vertical sectional View taken along a line 4-4 in Figure 2;

Figure 5 is a side elevation of a modiiied form of the invention showing the same in closed position Figure 6 is a side elevation oi the reverse side of Figure 5 showing the same inverted and in open position;

Figure 7 is a bottom plan viewof Figure 5;

Figure 8 is a vertical sectional view taken along a line 8-8 in Figure 6.

Referring more specifically to the drawings, Figures 1 to 4 inclusive show va type of pliers or Wrench having handles It and II, the handle II being pivoted yas at I2 to the handle Ill immediately back of the serrated or jaw portion I3. The handle II has pivotally secured thereon as at I4, a jaw member I5 having serrations I6 for cooperating with the serrations I3 on the jaw portion of handle It. The handle I0 hasV an elongated slot I 'I therein in which a pin I8 is slidably mounted, pin I8, also penetrating and being securedin the rear'end of jaw member I5.

If desired for holding jaw member I5 in normally open position, a leaf spring member I9 can be provided and suitably fixed to the handle member I0 as at 2B. The handle member I0 in that portion where the slot I1 occurs, is cut away as at 2| and the handle portion II is cut away as 22 al1 the way tothe pivot point I2 to provide lesser thickness to the same. Also the jaw member I5 is cut away fromline 23 all the way to the pivot pin I8 to provide athinner portion 24 for cooperation with thethinner portion 22 on handle member II. The handle I0 is cut away around pivot I2 to provide a thin portion.

In Figures 5 to 8, inclusive, like referencecharacters will apply to like parts except that the pin I4 is squared as at I4a and is adapted to have movement in aslot 26 provided in the jaw member I5 and one edge of thisslot 26 has notches or serrations 2l in which the squared portion Illa of pin I4 is adapted to have movement and the spring I9 holds the jaw member I5 in such position that when the squared portion Ilia. of pin I4 is adjusted in aparticular notch 21 that the parts will be held in this adjusted position to thereby adjust two jaws of the wrench apart from each other to the desired amount for a particular size of nut to be operated upon by the wrench or pliers.

It is thus seen that I have provided a wrench or set of pliers which exerts a crawling action on a bolt, that is, as will be observed in Figures 2 and 6 where the jaws are in open position, the tip ends are approximately even with each other, whereas, as they move toward closed position, the jaw member I5 moves rearwardly or to the right in Figure 1, relative to the handle I0 and thus there is a crawling or gripping or twisting action applied to the bolt as the handles I0 and II are brought toward each other. This has a tendency to firmly embed the serrations in the nut and prevent slipping of the jaws relative to the nut, thus giving a very firm grip on the nut and thus 'providing a Wrench or set of pliers which will turn nuts which are corroded onto battery terminal bolts where an ordinary end wrench or an ordinary set of pliers would not do the job.

In the drawings and specication, there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation,

the scope of the invention being defined in the claim.

I claim:

A wrench comprising a handle member having a jaw on one end thereof, a jaw member having a jaw on one end thereof cooperating with the jaw on the handle member, the other end of the jaw member being pivoted on an intermediate portion of the handle member, a second handle member having one end pivotally secured to the irst handle member at a point between the jaw on the rst handle member and the point whe'r the jaw member is pivoted on the rjfsft Nhanrlle member and extending past an inter-mediate pore tion of the jaw member, a pivotal connection between an intermediate portion of the jaw'me'r'- ber and an intermediate portion of the second handle member, the pivotal connection .between the jaw member and the first handle member being a slot and sliding pin connection, and the pivotal connection between 'thej'aw member and the second handlerme'mber being a sl'ot in the V-aiiv member having one of its sidewalls serrated and a pin mounted in the second handle member and extending through the slot having the serrated sidewall, the serrated sidewall of the slot in the jaw member being engageable by the pin when the second handle member is moved towards the first handle member.

JACOB PLANNIE GANTT.

REFERENCES CITED The following references are of record in the fle of this patent:

UNITED STATES PATENTS

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