US1082601A - Adjustable wrench. - Google Patents

Description

H.` A; MOGARTHY.

ADJUSTABLE WRENCH.

APPLIOATIONIILED 00T. 24, 1912.

Patented Deo. 30, 1913.

In ventot".

Witnesses.

COLUMBIA PLANOGRAPH co..w^SH xNGTaN. D. c.

HIRAIVI A. IVICCABTHY, OF PETERBOROUGFH, ONTARIO, CANADA.

ADJUSTABLE W'RENCH.

Specification of Letters Patent.

Y Patented Dec. 30, 1913.

Application filed October 24, 1912. Serial No. 727,529.

To all whom it may concern.'

Be it known that I, Hman A. MCCARTHY, a subject of the King of Great Britain, and resident of Peterborough, county of Peterborough, Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Adjustable Wrenches, as described in the following specification and illustrated in the accompanying drawings, that form part of the same.

rlhe principal feature of this invention consists in the novel construction and arrangement o-f parts, whereby an adjustable jaw member is slidably held within a guideway having a rigid jaw member and whereby the adjustable member may be instantly locked and held securely in any desired position.

llhe objects of the invention are, to save time in the use of a wrench by providing a wrench which may be opened to any desired size instantaneously and to devise a Wrench of simple, strong and durable construction which may be manufactured at very low cost.

In the drawings, Figure 1 is a side elevational view of the invention. Fig. 2 is a side elevational view of the invention shown in part longitudinal section. Fig. 3 is a cross sectional view through the line a-b Fig. 2. Fig. at is a cross sectional view through the line -g/ Fig. 2.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, 1 is the handle portion of the wrench which is formed up of sheet metal bent into U-shape.

2 is the rigid jaw member formed with a shank 3 adapted to lit snugly into the rounded upper `portion of the handle and forming a shoulder 1 at the head against which the end edge of the handle abuts.

5 is a pin extending through the handle portion 1 and shank 3 rigidly securing the said shank and jaw 2 to the handle.

6 is a pin secured at the butt end of the handle 1 adjacent to the open side, said pin being shouldered to prevent the sides of the handle being squeezed together.

7 is the adjustable jaw formed with a squared shank portion 8 adapted to tit between the fiat sides of the handle member and sliding therein bearing against the forward face of the shank 3. lThe point 9 of the jaw 7 is preferably formed to extend outwardly farther than the point of the rigid jaw 2. The front face vofthe shank of the adjustable jaw memberis formed with transverse serrations 10.

11 is the locking lever pivotally secured Lon a pin 12 extending through a pair of forwardly extending lugs 13 formed on the front edges of the handle member 1 intermediate of its length.

14 is a transversely serrated portion eX- tending inwardly from the lever 11 adapted to mesh into the serrations in the adjustable member.

15 is a pin secured in the end of the lever 11 and extending angularly inward therefrom and adapted to receive the end of the spiral spring 16 which is arranged between the sides of the handle member and extends forwardly encircling the reduced end 17 of the adjustable member 7.

1S is a hook shaped end formed on the lever 11 adapted to extend between the sides of the handle and to engage the cross pin 6 thereby limiting the outward movement of t-he locking lever.

In the use of this device, the operator places the point of the adjustable jaw in engagement with the pipe or nut which is to be turned or held and by pushing forward upon the handle slides the adjustable member back from the rigid jaw 2 allowing the said pipe or nut to slip in between the jaws. The spiral spring 16 holds the adjustable jaw member in close contact with the article to be gripped. The operator .then presses upon the locking lever 11 and as the angle face of the serrations of said locking lever are arranged slightly in advance of the angle faces of the serrated portion of the adjustable jaw member, the inward pressure causes a tightening of the jaws, thus insuring a secure grip on the article to be turned.

in order to release the wrench it is merely necessary for the operator to release the locking lever by loosening the lingers on the handle 1. On the release of the locking lever the spring 16 swings it outwardly upon its pivot withdrawing ,the tooth portion from engagement with the adjustable member, the spring then forcing the adjustable member outward toward the head end.

l/Vhat I claim as my invention is 1. ln an adjustable wrench, an outer hollow handle having a rigid jaw member secured thereto, a jaw member slidably arranged in said hollow handle and formed with a toothed front face, a locking lever pivotally secured in said handle and having a toothed portion adapted to engage the toothed face of said adjustable jaw member, and a spiral spring` having one end secured to the adjustable jaw member and the other end secured to the locking' lever Yadapted to release said locking lever and return the adjustable member to its forward position.

2. ln an adjustable wrench, a handle portion formed of sheet metal bent into U-shape in cross section, a head rigidly secured to said handle, an adjustable jaw member slidably..- arranged between the sides of said handle, a looking lever pivotally secured to the sides of said handle in front of said adjustable member and adapted to engage and lock said adjustable member, said handle 20 having' an are shaped hook member atits outer end, a pin secured in said handle and adapted to engage said hook member vto limit the outward movement of the locking,y

lever, and spring means for releasing said 25 Hilti-XM A, MCCARTHY.

lWitnesses Marmi MCCARTHY, N. ROUTLY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G.

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