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Publication numberUS1144907 A
Publication typeGrant
Publication dateJun 29, 1915
Filing dateApr 19, 1915
Priority dateApr 19, 1915
Publication numberUS 1144907 A, US 1144907A, US-A-1144907, US1144907 A, US1144907A
InventorsCharles W Knipple
Original AssigneeArnold B Ferguson, Charles W Knipple
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1144907 A
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Description  (OCR text may contain errors)



APPLICATION man APR. 19. 1915.

Patented June 29, 1915.




Specification of Letters Patent.

Patented June as, 1915.

Application filed April 19, 1915. Serial No. 22,408.

To all whom it may concern:

Be it known that I, CHARLES W. KNIPPLE, a citizen of the United States, residing at Parsons, in the county of Tucker and State of West Virginia, have invented certain new and useful Improvements in Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

This invention relates to new and useful improvements in wrenches and hasfor its principal object to provide an ad ustable jaw ratchet wrench.

Another object of the invention is to provide a ratchet wrench which is capable of being actuated to turn articles both to the left and right. I j

A further object of the invention is to provide a novel form of ratchet and pawl.

lVith these and other objects in view, the invention consists in the novel combination and arrangement of parts which will be fully set forth in the following specification and accompanying drawings, in Which:

Figure 1 is a perspective view of the wrench constructed in accordance with this invention. Fig. 2 is a side view of the wrench showing a portion broken away to more clearly illustrate the details of construction. Fig. 3 is a transverse sectional view on the line 83 of Fig. 2. Fig. 4 is a detail perspective view of the pressure bit for the pawl, and Fig. 5 is a detail perspective view of the pawl.

Referring to the drawings by characters of reference, the numeral 1 designates the handle of the wrench which comprises the gripping portion 2 having formed atone end the angular extenslon 3. Th1s angular extension is preferably rectangular 1n cross section as shown and is formed with the axially extendlng bore 4: and the transversely extending slot 5. A similar trans-- versely extending slot 6 extends at right angles to the slot 5 and the depressions 7 are formed at the ends of said slot. Suitable extensions 8 project forwardly from the squared extension 3 and in parallel relation with each other and each of these extensions is formed with an opening 9 for the reception of the pivot pin 10 by means of which the jaws are held in place. The end of the squared extension is curved as at 11 to conform to the curvature of the jaws. Extending through the slot 5 is a suitable rivet 12, the ends of which are flanged over suitable washers 13 and this rivet extends through a central aperture 14 formed in the pawl 15, which pawl is provided with the beveled edge 16 and the oppositely beveled edge 17 which edges are adjacent and are so arranged as to engage the seat of the ratchet wheel of the jaw members to permit the handle to be freely rotated in one direction.

In order to provide a means for forcing the pawl into engagement with the teeth, the bifurcated pressure member illustrated in Fig. t'is provided and comprises the body 18 having the reduced extension 19 formed at one end thereof. The forwardly extending arms 20 are formed at the opposite end and between these arms the pawl 15 is disposed. A suitable coil spring 21 engages the inner end of the body 18 and surroundsthe extension 19 when the device is in place in the opening 1. The opposite end of this coil spring abuts the inner terminal of the axial bore and it will thus be seen that the pressure member will be forced outwardly thereby forcing the pawl into engagement with the teeth.

.Pivotally mounted on the pivot pin 10 between the extensions 8 is the jaw member designated generally by the numeral 22 which comprises the ratchet wheel 28 provided with theperipheral teeth 24: and the body 25 which is formed with the transversely extending opening 26 in which the barrel 27 is mounted. The wheel 23 is formed with a central opening 28 for the reception of the pivot pin 10 and it will be clearly seen that. the jaw member will be pivotally held between the arms 8. A suitable worm 29 is formed on the barrel 27, which worm is designed to engage the teeth on the movable jaw members which will be more fully hereinafter described. The barrel 27 is rotatably mounted on the pivot pin 30 and formed at one end of the body 25 is the upstanding jaw 31 having formed therein a transversely extending opening 32, and extending into this opening is the rib 33 which acts as a guide for the movable jaw member. The jaw 31 is formed with the jaw face 34 and this jaw face cooperates E ith the jaw face of the movable jaw mem- The movable jaw member hereinbefore referred to is designated generally by the nu meral 35 and comprises a body 36, having formed thereon a jaw 37 and on this .jaw'

is provided a jaw face 38 which cooperates with the jaw face 34 in gripping the articles to be turned. In order to provide a means for adjustment, the teeth 39 are formed on the side of the body 36 opposite the jaw 37 and are spacedsuch a dis-- tance as to receivethe worm 29 so that when said worm is rotated the jaw will be ad: justed. A suitable groove 4:0"exten-ds longitudinall'y of the body 36 and is designed forthe reception of the rib hereinbe fore referred to. The body 36' is slidable in the groove tliormed inthe bodyQfi-ahd through the opening 32v and it will thus be seen that thejaw members 31 and '37 will be held at'all times in operative position.

It will be apparent from the foregoing that in use the jaws areadjusted to the desired sizes whereupon the pawl is shifted so as to engage the teeth to enable the jaw member to be turned in the desired direction. It will thus be seen that one of the beveled faces will ratchet over the-teeth 24 in one direction and will engage the teeth so as to cause the jaw member'toturn when the handle is moved in the opposite direction. 111 event that it is desired that the jaws remain rigid and the handle be adthe combination and arrangement of parts as will fall within the spirit and scope of the appended claims.

What is claim is: 1. A wrench of the character described comprising ahandle, a jaw member, a Totatable pawl carried by the handle and ar-' ranged to engage the jaw member to hold the same against rotation in one direction, when in one position and to stop rotation in the opposite direction when in another position.

2-. A wrench of the character described comprising a handle, a jaw member, 'a ratchetwheel on the aw member, a rotatable spring pressed pawl in the handle and adjacent beveled faces on! the pawl, one of said faces arranged to engagethe ratchet teethto hold the jaw member against r0 tat'ioncin one direction and the other face holding the jaw member against rotation in the opposite direction when the same-is in operative position,

Wrench 01: the character described comprising a handle, a jaw member pivoted to one end of the handle, a ratchet wheel carried by the jaw member, a pawl slidably and rota-tably mounted in the handle,

oppositely inclined adjacent faces on the pawl arranged to hold the jaw members against rotation in one direction andspring pressed means to; urge the pawl toward the ratchet teeth and hold the same in engagement therewith.

4. A wrench of the character described comprisinga handle, a jaw member pivoted- CHARLES w; KNIPPLE. Witnesses:

J. P. Sco'rr,


Copiesof this patent'may be obtained forfive cents each, by; addressinglthe Commissioner of Patents, Washimgtomb. G2

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6186034 *Dec 11, 1998Feb 13, 2001Dan E. LamonsFlex handle adjustable wrench
US6520053 *Jul 20, 2001Feb 18, 2003Youn Chyuan LiaoRotatable tool handle having a solid locking structure
US6877186 *Jun 10, 2003Apr 12, 2005Hsuan-Sen ShiaoSwingable handle for a hand tool
US6938706 *May 29, 2003Sep 6, 2005Black & Decker Inc.Power tool provided with a locking mechanism
US7131356 *Dec 21, 2004Nov 7, 2006Lea Way Hand Tool CorporationHand tool having an adjustable head with joint lock mechanism
US7201085 *Jan 17, 2006Apr 10, 2007Chih-Ching HsiehPivoting device for hand tools
US7637183 *Jan 10, 2008Dec 29, 2009Gabriel AlvaradoMethod of using adjustable pivotal wrench
U.S. Classification81/177.9
Cooperative ClassificationB25G1/063