US1280711A - glave - Google Patents

Description

a. Y. GLAVE.

WRENCH.

APPLICATION FILED AUG-30,1917- 1,230,711. Patented Oct. 8,1918.

UNITED STATES PATENT OFFICE. I

GEORGE Y. GLAVE, OF NEW YORK, N. Y., ASSIGNOR T0 CLAIRE L. GLAVE, 0F LAWRENCE, NEW YORK.

warmers.

. Specification of Letters Patent.

' Patented Oct. s, 1918.

Application filed August 30, 1917. Serial No. 188,890.

To all whom it may concern:

Be it known that I, GEORGE Y. GLAVE, a subject of the King of England, and a resident of New York, New York county, and State of New York, have invented certain new and useful Improvements in Wrenches, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to new and useful improvements in adjustable wrenches and its object is to provide a simple and effective device of this character which may be used in the usual manner in which monkey wrenches are used and which is provided with an arrangement for setting the jaws of the wrench more tightly upon an object, than is possible by the use of the fingers.

In order that my invention may be thoroughly understood I will now proceed to describe the same in the following specification, and then point out the novel features thereof in appended claims.

Referring to the drawings:

Figure 1 is a side elevation partly in section of a wrench made according to and embodying my invention.

Fig. 2 is a similar view of certain parts of the same device with the tightening lever shown in a different position.

Fig. 3 is an end elevation of the parts shown in Fig. 2.

Fig. 4 is a sectional end elevation of cer tain parts of the wrench, the section in this figure being taken on the line 44 of Fig. 1.

Like characters of reference designate corresponding parts in all the figures.

10 designates the rectangular shank of the wrench, 11 an internally threaded boss which projects from the under side thereof. and 12 a collar or enlargement at the end of the shank, and 13 the handle. 14 is the rigid wrench jaw which is welded onto the outer end of the shank after the adjustable jaw member has been put in place.

The adjustable jaw member fits slidably over shank 10. It comprises the jaw proper I which is designated by 15, two straps 16 which extend over the top of the shank, and a lug 17 which extends downwardly in alinement with lug 11. Between this lug and the back of the jaw proper is a rectangular space 18. v

20 is a threaded adjusting screw, the threads of which engage the threads of the lug 11. Its forward end passes through a clearance hole 21 in lug 17 and into a circular thrust pocket 22 in the back of jaw 15. A collar 23 which fits more or less loosely in the space 18 surrounds this end of the adjusting screw, which part need not be threaded and is pinned or otherwise affixed thereto.

On the other end of the adjusting screw is a nurled head 24, the rear end of which is castellated as at 25. An axial hole 26 is drilled in the rear of the head 24 into which rotatably fits a circular member 27. An annular groove 28 is cut in this member into which projects a screw 29 to prevent the withdrawal ofmember 27 from the head without interfering with its rotation therein. 30 is a tightening lever, one end of which is forked and ivotally connected as at 31 with member 2 The parts just described form a universal joint between the adjusting screw 20 and the tightening lever 30.-

32 is a spring clip afiixed to the collar 12 as at 33; This is arranged to hold the tightening lever in axial alinement with the adjusting screw without necessarily interfering with its rotation although it is to be understood that with the particular construction shown and described, rotation of the tightening lever is not necessary for the operation of the device. I

' I will now describe the manner in which this wrench is used. With the tightening lever in the position in which it is shown in Fig. 1, the jaws 14 and 15 may be relatively adjusted in a manner similar to the usual way of adjusting the jaws of an ordinary monkey wrench, by turning the nurled head 24 by the fingers.

When a tighter grip between the jaws is required it may be attained by pulling the tightening lever 30 out of the spring clip 32 and moving it ninety degrees about its pivot 31 into the most convenient one of the spaces between the projections or teeth on the castellated end 25 of the head 24. Considerable purchase is now available for turning the adjusting screw 20 and forcing it against the back of the movable jaw 15. No matter what angular position the tightening lever may take, its universal joint connection with the adjusting screw makes it possible to again force it into the spring clip 32 so that i s not in the way when the wrench as a whole is swung. It is obvious that the lever is also available for separating the jaws 14 and 15 should theybecome jammed or so tightly forced onto an object that they cannot be loosened by turning thehead '24, by.

the fingers.

I am aware that, Vises and wrenches have been provided with tightening levers, but

such devices as have been availablehereto-.

fore have been more or less clumsy and inefficienta becauseof the fact that' -such levers could not be heldinyalinement with thead? justing member and have been therefore decidedly in the when it is desiredto adjust the jaws intheusi'ial way by. the fingers.

The-structure which I have "shown and described has been selected as illustrative of my invention and is a construction-which I axial alinement with the adj usting; member,

and means whereby. saiditightening lever may be'swung out ,of'said axial ahnement into locking condition with said adjusting member.

. 2. wrench comprising atpairf of relatively movable jaws, a rotatable adjusting member therefor, a tightening lever pivotally connected to the end ofsaid adjusting member, means for detachably holding said lever rotatably in axial alinement with the adjusting member, and means whereby said tightening, lever may be swung about said pivotal connection out of said axial alinemerit" into locking condition with said adj usting member.

3. A wrench comprising'a pair of relatively movable jaws, a rotatable adjusting screw therefor, a tightening lever pivotally connected to the end of said adjusting screw, meansfor detachably holding said lever rotatably in axial alinement with the adjust ing screw, and locking means on said screw, said lever being movable about its pivotal connection out of said axial alinement, into engagement with said locking means.

4; A wrench comprising a pair of relatively movable jaws, a rotatable adjusting screw therefor, a head for rotating, said screw, the outer end of: saidrhead being .Cas-

tellated, a tightening lever, a universal joint connection between theadjusting screw and the tighteningilever, and a. spring clip for holdingsaid. lever in axial alinement' with saiolt SGIGW," saidv lever being movable about its connection with the screw into engagementrwith thecastellated end ofsaidheadt In witness whereof, .I'have hereunto set; my hand this 24cth"day;of-July,1917. I

enonen rdnnvn:

Copies o fs'thispatntmaywbeuobtained fbrfivecents each, by addressing the Commissioner.- of Patents,

Washington-,1). 0.

Images