US888710A - Tool. - Google Patents

Description

PATENTED MAY 26, 1908.

J. L. JANBWAY.

TOOL.

APPLICATION FILED JUNE 16. 1906.

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JOHN L. JANEWAY, OF WALNUT HILL, PENNSYLVANIA.

TOOL.

Specification of Letters Patent.

Patented May 26, 1908.

Application filed June 16, 1906. Serial No. 322,104.

To all whom it may concern:

Be it known that 1, JOHN L. JANEWAY, a citizen of the United States, residing at VValnut Hill, in the county of Montgomery and State of Pennsylvania, have invented new and useful Improvements in Tools, of which the following is a specification.

The invention relates to an improvement in tools of the wrench type, comprehending a single instrument designed for use as a pipe or nut wrench and constructed to cooperate with a number of different sized articles with out initial adjustment.

The main object of the present invention is the provision of a tool comprehending duplicate lever members pivotally connected to provide the cooperative engagement of their proximate faces, said faces being formed for gripping engagement with articles of different sizes, whereby to adapt the toolfor efficient operation with practically all sizes of piping, nuts, or similar articles, without adjustment.

The preferred details of construction of the present invention will be described in the following specification, reference being had particularly to the accompanying drawing, in which:

The figure represents a plan of a tool constructed in accordance with the present invention, the open relation of the aws being shown in dotted outline.

Referring particularly to the drawing, wherein similar reference numerals indicate like parts throughout, the improved tool comprises jaws 1 and 2, of an appropriate length, each of which comprises a body ortion 3, formed at one end with a handle 4 and at the opposite end with an offset disk head 5. The disks 5 on the respective jaws are so relatively disposed as to provide for pivotally connecting the jaws through the medium of a pivot pin 6, passed through the alined disks. The pivotal connection of the jaws, in the manner described, provides for the relatively alined relation of the proximate faces 7 and 8 of the respective aws, said faces being formed by the relatively inner side edges of the jaws.

One of the jaws, as 1, is provided with a series of recesses 9 formed in the operative face 7 of the aw, and extending transverse said face, while the other jawis formed in the operative face 8 with a series of transversely disposed projections 10. By preference, the respective recesses and projections are approximately semi-circular in sectional contour, the projections being of a size to fit snugly within the cooperating-recess, it being understood that the recesses and projections are arran ed in pairs in transverse alinement of the too so that the projection on one jaw is directly opposite the recess in the other jaw. By this construction, the jaws when in closed or contacting relation, provide for registering the cooperating projections and recesses, the former fitting snugly within the latter.

To provide for the use of the tool with articles of different sizes without the necessity of adjustment, the recesses 9 gradually increase in size from the pivoted end of the jaw toward the handle end, the projections, of course, varying also in accordance with the recesses.

The operative edges or faces of the respective jaws are roughened throughout their length, as at 11, said roughened portions including the full exposed surface of said faces so that the wallof the recesses and the surfaces of the projections are also roughened.

The use of the tool is fully apparent from the above description taken in connection with the drawings, it being particularly noted that the cooperative engagement of a recess and projection provides for an effective gripping of a pipe or other cylindrical object, while the plane surfaces intermediate the recesses and projections provides for the effective gripping of any angular object. The use of varying sized depressions enables the operator toengage artlcles of different sizes in manner to prevent slipping of the tool in use. The projections, by virtue of affording a close contact with the entire wall of the cooperating recesses gives the tool an extended use, rendering it efiicient for holding small articles, drawing nails, and similar purposes.

The jaws, while preferably of metal, may be constructed of other material, and the size and number of the recesses and cooperat ing projections may be varied to suit the requirements of the user.

By the specific arrangement of the projections and recesses and flat portions be tween adjacent recesses and projections, the tool is adapted to be employed for gri ping a large number of articles of different s apes and sizes, and it is possible to obtain three points of contact between the jaws and articles. For instance, in gripping circular articles such as pipes, the three points of conloo tact are obtained at any one of the projections 10 and the two edges 12 of the corresponding recess 9, as indicated by the small dotted circles a. When larger pipes are gripped the three points of contact are obtained by two adjacent projections 10 of one jaw and the opposed intermediate flat portion 7 of the opposite jaw, as indicated by the dotted circles b. The lines 0 and d indicate respectively square or hexagonal nuts or bars showing the three points of contact.

That I claim and desire to secure by Letters Patent is:

1. A tool comprising a pair of bars, overlapping heads at one end, a pivot passing through the heads and located in a plane passing between the bars, handles on the bars at the ends opposite from the pivot, the opposed faees of the bars being formed with alternate projections and recesses, the projections of one bar having flat longitudinal surfaces arranged in a common plane and adapted to engage in the recesses formed between the projections of the other bar, said recesses being flat at the bottom, the projections on the other bar being of circular form and adapted to engage in the recesses between the projections of the opposite bar which recesses are correspondingly shaped,

and serrations on the opposed faces of the bars extending transversely thereto and arranged on the projections and recesses alike, the projections at opposite sides of any recess serving as jaws for preventing an object gripped by the tool from slipping in a direction longitudinally of the bars.

2. In a tool of the class described, the combination of a pair of members, one member having spaced recesses, spaced projections on the other members adapted to engage in corresponding recesses in the opposite member, there being flat surfaces between adjacent projections and adjacent recesses, any two adjacent projections on one jaw cooperating with a flat portion of the other jaw for producing three points of contact with an object to be gripped and any projection on one jaw cooperating with the ends of a corresponding recess on the other jaw, for providing three points of contact with an object to be gripped.

In testimony whereof, I aflix my signature in presence of two witnesses.

JOHN L. JANEWAY.

Witnesses:

PAUL S. VVYNNE, SAML. lVILsoN.

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