US1924393A - Pipe and nut wrench - Google Patents

Description

Aug. 29, 1933. J. w. BEERY 1,924,393.

PIPE AND- NUT WRENCH Filed March 30, 1931 INVEN TOR.

Patented Aug. 29, 1933 .UNITED s 'm'rlssr PATENr oFFlcE l e,

` 1.924,31'9'3 'f PIPE AND UT WRENCH John W. Beery, Rosamond, Calif. i Application March 3o, .1931. serial N0.- `526,151 A. claimjlci.' `:i1-.enf Y l combination pipe and nut wrenches `and the like.`

' This invention relates to improvements, in

'One of the objects of this invention is to provide a simple, efficient and inexpensive pipe and nut wrench designed and constructed in such` a manner that two jaw heads may benswung to adjustably grip a `nut ora pipe, Athe `arrangement of` parts facilitating thisioperation.

Another object of this inventionis to provide, in a wrench of the type described, a pairof levers, one being longer than the other` each lever having a head formed with a confronting rectilinear gripping edge, arranged at all times in parallelism no matter how far' apart these J gripping edges may be separated.

A `further object of this invention is to yprovide a combination pipe andy nut wrench in which a pair of levers are 'pivoted `in superposed relationship for conjoint action, being pivoted in such-a manner upon a'handle that their jaw Vheads will always be maintained'parallel in any adjusted position of the levers whereby the nut' engaging notch made by both heads Williunc'- tion properly in any size produced'- by "the swinging of both levers'. 'n 1 A'still further object of this inventionk is to provide a pipe and nut wrench in which `two,

levers are pivoted ina bifurcated portion of the handle,'in such a'Y manner that vone lever pro` jects in advance of the other, both levershaving r at their front confronting ends rectilinear heads with parallel rectilinear edges, said handle hav-1 ing an elongated groove in which slides a plunger carrying a dog for engagement with one lever to swing this lever, means being provided whereby both levers will move at the same time with ltheir heads maintained in parallel relation.

The present invention also embodies a handle,

in the slotted frontend of which two'levers, oneV longer Vthan the other are pivoted in contacting superposed relation for -joint actionthe leversv swinging against thetension of a spring, and providing spaced apart gripping jaws-with parallel gripping edges, the arrangement being such that the innermost lever is shouldered pivotally against an arcuate portion of the handleso that all stressesV impressed upon this'leverV or upon both levers will be counteracted by the handle directly.

With the above and other objectsin view myV invention consists in the'cornbination, arrangement and details of construction disclosed in the drawing and specicationand'then more particularly pointed out in the appended claim.V In the drawing, wherein similar reference char- A Figure :6 is a vfront vend elevation with the le-l `65 Y vers removed,

Figure 7 is a lfront end elevation with the long lever removed, and l i 1 Figure 8 is a frontelevation of the wrench.

Referring to the drawingv and specification, which'are merely illustrative of Amy invention 10Y designates a rigid-handle for the nut yand-pipe Wrench. n The handle is bifurcated at` its front V end and is provided with two walls the front edges'v Aof which have central arcuate bosses or Upor.- V`

tions 14,14' respectively,` the slot between these walls being designated 11.4 The upper corner' edges of the bifurcated portion .are designated 1 12, being separatedby recesses 13 from theb'osses 14, 1 4.' A pin 15 is'secured in both vupper corners 3'() 12 land secured vflxedly upon and around this pin `is`one endof a'stout reslient'member or s ear spring 18 pressing against the adjacent longitudinal curved edge `of a short lever 20,"which at its'outer end `is pivoted upon a pinV 17" also pass'- 35-l .ing'concentrically Within the bossesd,` 14 of handle 10. i The front end of lever 20 isformed with opposing lateral shoulders 15a formed by means of the head 28 which is as wide vas the'handle 9o but wider than the lever 20 proper, this head having its outermost surface formed plane or flat. The shouldersla are arcuate in formation and contact swingingly the arcuate bosses 14, 14. of the handle as the lever 20 oscillates on pivot pin 95 yThere 4is also provided a longer lever 22 whose inner curved'edge frictionally engages the advjacent edge of the short lever `20, lever 20 having a teat 21'tting recess'23 in lever 22while lever A100 22 has a similar teat 29 designed to fit into the notch or "recess made `or that Amay be made to receivethesame inlever` 20. The long lever 22 has ,an angular' portion which projects. in 1 advance of thejhead 28 oflever 20 Vand it hasv105v an inner angular'edge2l joining the serrated rectilinear or straight edge 26 'the' lattenedge being. disposed parallel to edgreZ of lever 20.

It willalso be. noted that the jaw 26 has its 1 outer face :curved or formedfconvex as at 25. .110

Both levers are thus mounted in superpcsed re# lation and normally there is a notch between the surface 26 of lever 22 and the surface 28 `of lever 20, these edges being parallel so that .with an elongated slot or groove y38, and disposed in parallel relation in this groove are a pair of Xed ears 33, and 32 formed upon the inner edge of this groove and slidahly mounted in these ears is the plunger 37 the rear portion of which, located to the rear of ear 33, has an operating push handle 35 acting as a manually operated means to swing both levers 20 and 22.

There is a pin/l0 on the plunger 37 bearing' against one end of a coiled spring 36. wound around the plunger 37 and bearing against the ears 32, 33. The free end of the plunger 3) may be "slightly curved and it has a shoulder or iiange 31 bearing against ear 32` under normal condition nof the spring 36. The terminal 30 o1 this plunger engages or bears against the inner end of the long lever 22V. 16 designates the curved lower corners of the bifurcated portion of the handle.

It will now be seen that the terminal 30 and spring 18 straddle the outer edges or" the levers 22 and V20 respectively. In the operation of the wrench the handle 35 is slid along in the handle 10 pin 40 moving to compress the coiled spring 36 as shown in Figure, the terminal 30 advancing 35, far enough to tilt the long lever 22, which, bearing against the shorter lever 20 urges this short lever to tilt with it, so that both levers swing upon their pivots together. Long lever 22 is pivoted eccentrically with respect to lever 20 upon the pivot pin 1'7 secured 'in the bifurcated portion of the handle 1U. When both jawsr26, and 28 with their parallel edges swing in unison with levers 20 and 22, urged on'loy plunger 3D, then jaw 26 separates some distance apart from jaw 28, but

these rectilinear edges are still maintained in correct parallel relation to one another, so a larger size nut may now be gripped between these jaws. VWhen pressure is released from handle 35 the spring 3 6 will expand and the plunger will be restored to normal position shown in Figure 2.

A/pipe or nut is thus adapted to be rigidly held between the vise-like jaws of the levers. Any

severe stress such as will be engendered in the act of turning a nut bythe use of this wrench or turning a pipe held in the jaws, will be impressed thru the small lever 22 upon the arcuate between the jaws of the wrench the vhandle 10 willk be swung counterclockwise so that the nutor pipe lwill hold the jaws against receding movement so now as the handle is turned the plunger 30 will force lthe 'two levers 2D and 22 to move so the nut` may be screwed on or off its tting or a pipe unand seek protection on is responding with that of the handle, said T-head having an inner lconcave surface designed to pivotally ride in contact with the sector-shaped anvils in all positions, a pivot pin projecting through both anvils concentrically and into the lever to allow the latter to rock upon said anvils, a second lever made longer than the iirst and having an outer serrated jaw disposed in spaced parallel relation to the T-head and its inner end also projecting into the bifurcated terminal, resilient means pressing `the inner ends of both levers together for joint movement, the inner end of the T-head engaging ,the inner face of the arm of the longer lever, manually operated means for swingingr both levers jointly and vfor releasing them, andv means for pivoting the longer lever between the points of Contact of the inner ends of the two levers .with each other and the points lof contact of the inner end of the T-head and the inner face of the longer arm so that when both levers swing the serrated jaw and T-head remain parallel. Y

- JOHN W. BEERY.

.handle and having'a front T-head of a width cor-.

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