US1194563A

US1194563A - Prpe-wbench

Info

Publication number: US1194563A
Authority: US
Publication date: 1916-08-15
Anticipated expiration: 1933-08-15

Description

W. P. STALEY.

PIPE WRENCH.

APPLICATION FILED AUG.6.1915.

11.31.9 58 PutentedAug.15;1916.

Witnesses M ream/w,

tudinal sectional view W ILLIAM PRESTON STALEY, OF 'SEDALIA, MISSOURI.

PIPE-WREN CH.

To all whom it may concern:

Be it known thatl, \VILLIAM P. STALEY, a citizen of the United States, residing at Sedalia, in the county of lcttis and State of issouri, have invented a new and useful Pipe-VVrench, of which the following is a specification.

This inventionrelates to wrenches and more particularly to the adjustable type, designed for gripping and turning pipes, rods, or other circular objects or materials.

An object of thisinvention is to provide a pipe wrench which is capable of ready and convenient adjustment, and embodying novel automatic locking means. I

Another objectbf this invention .is the. provision of a pipe wrench which is adapted to securely grip the pipe,-or desired material, but which gripping action is limited in order to prevent the crushing of the pipe.

A further object of this invention is to providea pipe, wrench of generaLimproved construction, whereby the device 'will be simple, d urable and inexpensive inconstruction, as well as practical, serviceable and efiicient in its use.

With the foregoing and other objects in view which will. appear as the description. proceeds, the invention resides in the combination and arrangement of parts and'in the details of construction hereinafter described and claimed, 'it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope ofwvhat is claimed, without departing from the spirit of theinvcntion.

This invention has been illustrated in its preferred embodiment in the accompanying drawing, wherein Figure 1 a side elevation of the 1mprovcd wrench. Fig. 2 is a fragniental longiof the gripping end of the wrench. Fig. 3 is a transverse sectional view taken on the line 33 of Fig.2.

F ig. 4 is a perspective View of the gripping block. v

In carrying out the present invention,

, there is provided a stationary or fixed shank 1 having a laterally enlarged fixed ja w 2 formed at one end thereof and a manipulat- Specification of Letters Patent.

Application filed August 6, 1915.

'19 extending Serial No. 44,076.

ng handle 3 secured to its" opposed end. The outer, face of the jaw 2 is provided with teeth or serrations 4. An enlargement 5 is formed on the shank '1, adjacent the statlonary jaw 2, which enlargement defines an oblique or inclined shoulder 13 at the inner terminal thereof. A yoke 7 is pivotally secured to the enlargement 5, as indicated at 8. The yoke 7 comprises side walls 9 and

edge walls

10 and 11, and a transverse partition l2. Opposed rectangular slots 13 are formed in the side wall 9 of the yoke 7, while the edge wall 11 and adjacent portions of the side wall 9 are cut away as shown at 1-1. The yoke 7 is yieldingly held in predetermined relation with respect to the shank 1, by means of opposed lea-

f springs

15 and 16, which are secured to the shank 1, by screws or other securing elements l7.- The outer or free terminal of the spring 15 resiliently engagesthe transverse partition 12, while the outer or free terminal of the spring 16 resiliently engages the reduced edge wall 11.

Slidably mounted within the yoke 7, is ainovztble shank 18 having a movable jaw perpendicularly from one end thereof. The inner longitudinal edge of the movable shank 18 is-provided with teeth or serrations 20, and the inner face of the movable jaw 19 is, also, provided with teeth or serrations 21, which are operate with the teeth l of jaw 2, as will be hereinafter disclosed. In order to lock the movable jaw 19 in operablerelation relative to the stationary or fixed jaw 2, there is provided a gripping or ratchet block 22,.which has its outer face, or that face which is adjacent the movable shank 18, toothed or serrated as indicated at 23, to operably engage the teeth 20 of the. shank l8. ()pposed ears or laterally from the block 22, and are slidably received by the slots 13. A relatively long leaf spring 25' has one end thereof secured to the stationary shank 1, by means of the screw or other securing element 17, while the opposed terminal of the spring 25 resiliently-engages that face of the gripping block which is remote from teeth :33, to normally hold the teeth 23 Patented Aug. 15, 19118;

adapted to cothe stationary lugs 24 extend in engagement rangement the block 22 is held against longilength be readily moved from ping block or rod '(not shown) by direction of the arrow tudinal movement witl' respect to the yoke 7, owing to the sliding engagement of the lugs or ears 2 1 with the slot 13, but the block 22.is free to move transversely of the yoke '57, as depicted in the accompanying draw- To further insure against the longitudinal movement of the gripping block 22 in the direction of the stress, when the wrench is in use, one end, or that end of the grip- 22 which is adjacent the shoulder 6, is obliquely or slantingly disposed as indicated at 25, to cooperate with the oblique shoulder 6. I

In assembling the improved wrench, the

yoke is first secured to the stationary shank 1 by means of the pin 8, and then the are secured .to the Now the gripping block position by disposing its transversely of the yoke, or so that its length coincides with the length of the slots 13, thereby enabling the block 22 to be inserted into the yoke. After the block 22 has been inserted into the yoke 7 it is turned through an arc of 90 degrees, which allows the ready insertion of the movable shank 18 into the yoke, as illustrated.

In practical use, the movable jaw 19 may the fixed or stationto gripping the pipe simply pulling the gripping block 22 against the tension of the spring 25 and away from the serrated movable shank 18, through the instrumentality of the exposed lugs or cars 24, which are readily accessible, to allow their convenient manipulation. After the opposed.

jaws

2 and 19 are positioned on opposed sides of the pipe and into engagement with the pipe, the wrench will effectively pipe, by simply releasing the ears or lugs 2 1 and moving the wrench handle 3 in the A. After releasing the ears or logs 2%, the teeth 23 of the gripping block 22 will snap into engagement with teeth 20 of the movable shank 18, thereby locking the block to the movable shank 18, and, since the oblique shoulder 25 of the block 22 in engagement with the oblique shoulder 6 of the enlarged portion of: the fixed shank, therefore, the entire strpss of the gripping and wrenching actipn is imparted to the enlargement 5 of the fixed shank 1. v

It will be observed that any tendency of the gripping block 22 to moveaway from the movable shank 18, during the gripping wrench aption, is obviated by providing the inclined 'or oblique shoulder (S, because any movement of the block 22 away from the movable shank 18 will cause the block to springs15, 16 and 25 shank 1, as shown. 22 is placed in ary jaw 2, preparatory grip and turn the move along the oblique shoulder 6 against the direction of the stress of the gripping and wrenching action, whjohstrcss or strain is preponderantly in excess of any force which would tend to move the block 22 from engagement with the movable shank 18.

Having thus described my invention, what is claimed as new is z- 1. A wrench including a fixed shank; a fixed jaw; an oblique shoulder formed on the fitted shank; a spring controlled yoke pivotally secured'to the said fixed shank; a movable shank slidably mounted in the said yoke; a movable jaw carried by the movable shank; a gripping block slidably mounted in the said yoke; and an. blique shoulder formed on the said, gripping block and adapted to operably engage the oblique shoulder formed on the fixed shank.

2. A wrench including, a fixed shank; an enlargement formed at the outcrend of the said fixed shank; an obliquely disposed shoulder formed on the said enlargement; a serrated fixed jaw carried by the said enlargement; a spring controlled yoke pivotally secured to the said enlargement; a serrated movable shank longitudinally slidable within the said yoke; a serrated movable jaw extendin transversely from the said movable shanc; a. spring actuated serrated gripping block slidably mounted in the said yoke and adapted to operatively engage the said serrated movable shank; an. oblique shoulder formed on the said gripping block and adapted to slidably engage the oblique shoulder of the said enlargement.

3. A wrench including a fixed shank; an oblique shoulder formed in the said shank; a fixed jaw carried by the said fixed shank; teeth formed in the outer face of the said fixed jaw; .a yoke pivotally secured'to the fixed shank, said yoke comprising opposed side walls having opposed rectangular slots formed therein, opposed edge'walls, one of which is reduced, and a transverse partition formed in the yoke and extendin from the opposed side walls; opposed fia springs having one endsecured to the said fixed shankithe'free end of one of said-springs resiliently engaging the said reduced edge wall, while the free end of the remaining spring resiliently engages the said transverse partition, said springs adapted to nor-.

mally hold the yoke in predetermined relation with respect to the said fixed shank; a, movable shank slidably mounted in the said yoke; teeth formed on the said shank; a movable jaw extending from the said movable shank; teeth formed on the inner face of the said movable jaw and adapted to cooperate with the teeth formed in the said fixed jaw; a gripping block slidably mounted in the said yoke; teeth formed on the face of said block and adapted to operablv engage the teeth formed on said movable gripping block to normally press the teeth shank; an ear extending laterally from each of said block into engagement with the teeth side of the said block and adapted to extend of the said movable shank. through and slidahly engage the said reetan- In testimony that I claim the foregoing 5 ,gfhlar slots; an oblique shoulder formed on as my own, I have hereto aflixed my signa- 1 the said block and adapted to slidably enture in the presence of two witnesses.

gs" tie the oblique shoulder formed on the said WILLIAM PRESTON STALEY. "fixed shank; and a leaf spring secured to the Witnesses: said fixed shank, the free end of which F. E. Ginnoxs, 4Q spring is adanted' to resiliently engage the J. L. VAN WAGNER