US720784A - Wrench. - Google Patents

Description

M. L. COCHRAN.

WRENCH.

APPLIGATION FILED SEPT. 6. 1902.

N0 MODEL.

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UNITED STATES PATENT OFFICE.

MICHAEL LC-WLERY COCHRAN, OF UNLO, PENNSYLVANIA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 720,784, dated February 17, 1903.

Application filed September 6, 1902. Serial No. 122,424. (No model.)

To ctZZ whom/it may concern.-

Be it known that I, MICHAEL LOWLERY COCHRAN, a citizen of the United States, residing at Dunlo,in the county of Cambria, State of Pennsylvania, have invented certain new and useful Improvements in Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to pipe -worliing tools; and it has for its object to provide a combined wrenchand pipe-cutter wherein the parts will be so constructed and combined as to produce a tool that will be simple and cheap of manufacture and efficient in its operation.

A further object of the invention is to so construct and combine the parts as to insure a positive and intense gripping action between the jaws of the wrench and a corresponding action between the parts of the cutter.

In the drawings forming a portion of this specification and in which like numerals of reference indicate similar parts in both views, Figure 1 is a side elevation of a tool embodying the present invention. tudinal section through the tool, the adj nsting-screw being shown in elevation.

Referring now to the drawings, the present tool comprises a handle portion 5, consisting of a section of pipe which is internally through is a cross-sectional rectangular pas threaded at its ends and in one end of which is screwed a two-part or longitudinally-divided bnshing 6, which forms, in eect, an inwardly-directed ilange. In the opposite end of the tubular handle from the flange is screwed a block 10, having formed thereon two oppositely-directed jaws 13 and 14=. The block 10 may be cast or otherwise formed integral with its jaws, and longitudinally theresage 11, which opens into and is in axial alinement with the tubular handle. The jaw 13 is slightly concaved and has transverse teeth 15 to insure positive gripping of the jaw upon the pipe. The jaw 14. is provided with upwardly-directed parallel ears 16, having bearings in which are received the trunnions of a cutting-wheel 17', and beyond the cutting-wheel is a shoulder 18. A head is provided having two jaws 19 and 20, one of which is disposed opposite to and corresponds to the jaw 13, while the other jaw 20 has an angular recess 21, in which is received the cuttingwheel when the jaws 2O and 14. are brought together.

The head referred to has a stem 22, which is slidably fitted in the cross-sectionally-rectangular passage 1l,f it being also cross-sectionally rectangular, and through the inner end portion of the stem is formed a longitudinal passage 24, which is threaded and receives an adj usting-screw 25.

The adj usting-screw 25 is provided with spaced ' flanges 26 and 27, between which is engagedthe {iange forming the bushing above referred to, the two-part formation of the bushing permitting it to be adjusted in the space between the iianges and then screwed into the end of the handle. The end ot the screw projects from the rear end of the handle and is provided with a ring 27,in which may be engaged a cross-bar to facilitate application of maximum pressure to the screw.

With this construction it will be seen that there is provided a wrench which may be manufactured at a low price, in which the parts may be easily replaced when they become worn, yand in which the adjustment will be easy and positive.

It will be noted that when the adjustingscrew is rotated in one direction to throw the jaws together the outer flange of the screw will impinge against the end of the handle to prevent longitudinal movement of the screw and that when the screw is rotated in the opposite direction to move the jaws apart the inner flange of the screw will impinge against the inner end of the bushing, so that longitudinal movement ot' the screw will be prevented.

What is claimed is- A wrench comprising a tubular handle havinginternally-threaded ends, a block screwed into one end of the handle and having oppositely-disposed jaws, Isaid block having also a longitudinal, cross-sectional angular passage opening into the handle, a head having jaws corresponding to those of the block, a hollow internally-threaded stem for the head, slidably fitted in the passage of thcblock and IOO LFI

projecting into the handle,an adj Listing-screw passed into the handle and engaged with the threads in the stem, said screw having spaced anges lying respectively Within and Without the handle, and a sectional bushing screwed into the end of the handle and lying between the anges to receive pressure thereof.

In testimony whereof I affix my signature in presence of two Witnesses.

MICHAEL LOWLERY COCHRAN.

Vitnesses:

MARIA J AOKsON, JOHN G. JACKSON.

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