US1539137A - Adjustable wrench - Google Patents

Description

Patented May 269, 1925A.

1,53ga13f1 l v GEORGEHCE-NBY NELSON, OF BELVEDERE, KANSAS.

i VA13-.1roSTABLE WnENoriQ Application led September 21., 1923. Serial No. 664,078.'

State of Kansas, have invented a new andV useful Adjustable Wrench, of which the fol-- lowing is a specification.

This invention relates to tools, and more particularly `to a novel form of wrench, 'the primary object of the invention being to provide a wrench which may be readily and easily positioned on a nut, and one wherein all possibilities of the wrench moving with respect to its work are eliminated.

Another object of the invention is to provide means for accurately adjusting the jaws of the wrench with respect to each other,.

there being provided locking means .associated with the adjusting means for holding the adjusting means against movement after an adj usl'ment has been made.

Another important object of the invention is to provide pivoted handle sections which may be readily and easily moved to.

their active pcsitions. s

With the foregoing and other objects in view whic-hwill appear as the description proceeds, the invention resides in the coinbination and arrangement of parts and in the details of construction hereinafter dcscribed and claimed, it being understood that changes inthe precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without. departing from the spirit of the invention.

Referring to the drawing-z Figure l is an elevational view of a wrench constructed in accordance with the invention.

Figure 2 is a longitudinal sectional view through the jaws of the wrench disclosing the ope-rating handles in their operatingl pf sition.

Figure 3 is a sectional view taken on line 3-3 of Figure 2.

Figure 4 is a sectional View taken on line l--t of Figure 2. l

Referring to the drawing in detail, the device embodies movable jaws 5 and 6, which jaws are formed with cut out portions-7 at their ends and extending transversely thereof to provide article grippingsurfaces.

At one end of each movable jaw is a cut out portion extending longitudinally thereof, which cut out portions are designed to provide an end wrench, should it be desired to use the tool as such.

Formed on the rear wall of each jaw are spaced flanges 8 between which the operating handles 9 are pivotally mounted, shafts l() being provided for supporting the handles 9. is shown the handles 9 are formed with a curved end wall ll and a. relatively straight end wall 12, the curved walls allowing the handles to be moved to their inactive positions, or to positions as shown in dotted lines in Figure 2, when the wrench is used in the usual manner. ln order that the handles 9 may be heldl in their active positions, pins 13 are pro-- vided, which pins connect the flanges El and restrict movement of the handles.`

` The jaws 5 and 6 are provided with threaded openings to receive the adjusting. screws 13 which may be operated to move the jaws 5 and 6 away from each other, to position them on a nut or bolt to be secured Carried by one of the jaws is a guide pin let that extends through an opening in thcv opposed jaw torelieve the threads of the 4adjusting screw of lateral strain and'at thel same time hold the jaws in direct alinemcnt at all tunes.

As shi-wn, these adjusting screws areV formed with groves 14, which grooves accommodate the inner ends of the lock screws l5, whereby movement of the adjusting screws will be prevented, after an adjustment has been made. j

From the foregoing it will be obvious that by operating the adjusting screws 13, the jaws 5 and 6 may be moved with respectto each other to securely grip a nut or bolt to be positioned. After the adjustment has been made, the locking screws 15 may be properly positioned to lool; the jaws against movement, thereby insuring against the wrench slipping from its work while in use.

I claim e ln a wrench, a pair of movable jaws, adjusting screws carried by the jaws for moving the jaws with respect to each other, flanges spaced apart and formed integral with each jaw, operating handles pivotally supported between the flanges and adapted PATENT oF FICE@ to swing to positions in parallel Vrelation with the jaws, said flanges having openings, pins adapted to extend through the openings and adapted to engage the operating f handles to restrict movement of the operating handles, and a guidepin for holding the j aws in alignment with each other.`

In testimony that I claim the foregoing as my own, I have hereto aixed my signa-- ture in the presence of two witnesses.

GEORGE HENRY NELSON.

Witnesses:

A. S. LEONHARDT, H. I-I. KEITHLEY.

Images