US548696A - Carriage-wrench - Google Patents

Description

(No Model.) n

J. W. CARVER. CARRIAGE WRENCH. No. 548,696. Patented 0015.29, 1895.

`INVENTOR @QA/ugh,

ATTORNEY citizen of the United UNITED STATES' PATENT EEICE.

JAMES W. CARVER, OE GRANVILLE, NEW YORK.

CARRIAGE-WRENCH.

sPEcIEIcATioN forming pm of Lettefsratnt Nq. 548,696, dated october 29, 1895.` Application led November 6, 1894. Serial No. 528,009. (N model.)

To @ZZ whom. it may concern: Y

Be it known that I, JAMES W. CARVER, a

States, residing at Granville, in the county of Washington and State of `N ew York, have invented certain new and useful Improvements in Carriage-Wrenches, of which the following is a full, clear, and eX- act specification.

This invention relates to carriage-wrenches; and it comprises a clamp which is operated bya compound screw, being specially adapted for tightening and loosening the nuts, which secure carriage-wheels in place.

In order that my invention may be fully described and explained in detail, I have an? nexed hereto a sheet of drawings, in which- Figure l is a side elevation of the carriagewrench complete. Fig. 2 is a plan View. of Fig. 1. Fig. 3 is a right end viewof Fig. 1. Fig. 4 is a central vertical section of Fig. l.

In the drawings, A indicates the central main portion of the wrench, the said portion A having the nut-receiving mouth a. Below said mouth a and through the body portion A is a transverse aperture b. The central plain or pivotal portion c of the compound screw is placed within this aperture b and is held from lateral movement therein by means of a groove d and a pin e, engaging in said groove. The right andleft hand screwsf g, which are connected with the central portion c, forming a compound screw, are passed, respectively, through side pieces hr2, the threads of said screws engaging with like threads withinv the said pieces he'. Laterally-extending pins j la are secured at either side of the portion A, the said pins passing loosely through pivotalbearings Zm in the side pieces 7L c'. A handle n is secured to the portion A,

preferably as shown in the drawings, and a crank-handle ois fastened at the free end of one of the screws f g, preferably asshown in the drawings, for the purpose of operating the wrench.

It will be readily seen from the above de= scription, taken in connection with the atlnexed drawings, that the movement of the handle o will cause the side pieces h i to travel toward or from the central main portion A, the said pieces their movement by the pinsj le. It will thus be understood that upon inserting the mouth portion a over the nut in a wheel-hub and then causing the side pieces h i to travel outwardly the roughened surfaces p q of said side pieces will come in contact with the inside of the hub-flange and may obtain a lirm hold thereupon. Then by continuing to turn the crank o (the wheel-shaft being held against rotation) the nut, which is within the mouth a, will be released or tighten ed, as may be desired.

Having now described my invention, I declare that what I claim is* The central portion or body, provided with 'the nut mouth or recess in its inner end, a handle 'n upon its outer end, and guiding pins j 7c upon its opposite sides; and having an opening b through its center, combined with the right and left hand screw, havinga groove d, at or near its center; the pin e, which extends transversely through the body and holds the screw in position, the two jaws h, t', placed upon the threaded portions of the screw and made to move in opposite directions, and hav-- ing their inner and outer ends rounded away and roughened; and the handle upon one end of the screw, whereby the wrench is supported in position by the handle n, while the handle o is revolved to cause the jaws to move outward against the sides of the hub, substantially as shown.

In testimony that I claim the foregoing I have hereunto set my hand this lflth day of July, 1894.

JAMES W. CARVER.

being guided inl

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