US1449386A

US1449386A - Pipe wrench

Info

Publication number: US1449386A
Application number: US544449A
Authority: US
Inventors: Edwin J Evans; George E Hemphill
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-03-17
Filing date: 1922-03-17
Publication date: 1923-03-27
Anticipated expiration: 1940-03-27

Description

Mar. 27, 1923,

' 1,449,386. E.J. EVANS ET AL.

PI'PE WRENCH. FILED MAR- I 1922.

ull-f!" man!mmm@ QE #EMPA/rbb) Patented Mar. 27, 1923.

anges@ UNITE; STATES ra'reurl OFFICE.

EDWIN' JQ nvAiv'isAND GEORGE nnnifirnim, or SALT LAKE Grrr, UTA.

'PIPE WRENCH.

appucation'med'nareh 17,' 41922. serial No. 544,449.

To all who/m. t mag/concern.'

Be it known that we. EDWIN J'. EVANS' and Grenen E. HEMPHILM citizens of theA United States7 and residents of Salt Lake City, in the county of Salt Lake and State oi Utah, have invented certain new and useful` Improvements in Pipe lVrenches,V of which the following is a specification.

This invention relates to an improvementy in pipe wrenches andhas for its object to provide an improvement of this' character wherein the jaws of the wrench maybe quickly setto engage pipes or other work olt various sizes and yet at the same timeV be capa-k easy and comparatively `inexpensive ,to man` u'lacture. i l

Uther objects and'a'dvantages ot the invention reside incertain' novel features ofthe constructiom combination and arrangement ot parts as will be'hereinatter more fully described and particularly pointed out in :the appended claims, reference being had to the accompanying.drawingsj forming a part ot this specification, in which,

Figure 1 isa view in side elevation illustrating a pipe wrench embodying our invention,

Figure 2 is a bottom plan view of the pipe wrench shownin4 Figure 1.`

Figure 3 is a view thereof in longitudinal vertical section,

Figure 4t is a view in transverse section on lino 4-4 of Figure 1,

Figure 5 is a similar view on line 5 5 of Figure 1,

Referring to the drawings wherein for the sake of illustration is shown the preferred embodiment ot the invention, numeral 10 designates generally a hollow shank which is hollow in that it is provided with a longitudinal bore. A fixed `iaw 12 is arranged at one end of the hollow shank and preferably is provided with a removable and serrated jaw-face 13.

An operating rod designated generally at 15 is rotatably journaled in the bore of the hollow shank and it has a portion adjacent the fixed jaw 12 formed to constitute an operating screw designated at 16. The operating rod. 15 is also provided with a helical groove 17, thebhelcal groove being provided in a portion of the operating rod which is disposed' in the end of the shank that is remote 'from the fixed aw. A longitudinally extending slot 18 is formedv in its shank adjacent the helical groove'17 and an operating sleeve 19 is slidably mounted on its shank and has secured thereto a1 piny 2O which extendsv through the slot 18 and which co-'acts with the helical groove 17 Inithis manner when the operatingi'or traveling y mg rod wil-l be rotated. n

A carrier or frame 25 is mounted on the shank and includes side plates 26' which snuglyengage the side facesot the shank and end plates 27 and ,28, The endI platev 28 sleeve 19 is moved longitudinallyv the operat- Ybeing curved correspondingl `to rthe face yof the shank with which `it 1s engaged as clearly shown in Figure l. A nut designated generally at 30 is fitted in the trame 25 `and isicarried thereby, the nut operating in a slot 31 extendinglongitudinally in the shank 10and along the operating screw 16, the threads otthe' nut being operatively reinra'ged with the screw 16 as clearly shown .in Figure 3.v The nut 30 includes laterally extending guide arms 82 and outwardly extending attaching arms 33 integral with the guide arms (see Figure 4'); The guide'arms 32 slidably engage the portions o-` the shank adjacent the slot 31 and the attaching arms 33 snuglyy fit `the `side plates 2601. the frame or the carrier 25.

.si movable jaw B5` is provided and prefer-` ably' is equipped with a removable/jaw-face 86 having sei-rations as shown in the drawing. The shank 37 of the movable jaw 35 is pivotally connected to the carrier 25 by means of a pivot pin 38. As shown in Figure 4i the pivot vpin 38 has threaded engagen ment as at 38a with one of the side plates 26 and this pivot pin passes through the attaching arms 33 of the nut as well as through the pivoted shank and in this manner it constitutes common means :for pivotally connecting the movable jaw to the frame or carrier and for securing the nut in position. The shank 37 of the pivoted jaw isv provided at the end thereof remote from the j aw with a socket 37a, which re ceives one end of acoil spring 40, the other end ot the coil spring proiecting from the socket and engaging the nut 30. The coil spring is tensioned to urge the pivoted jaw in one direction so that it will be disposed to enter into gripping engagement with the work.

ln operation the jaws ot the wrench may j to partake ot the movement thereof and consequently is adj usted toward and away from the fixed jaw. The spring engages the pivoted jaw to maintain it in proper position with respect to the iiXed `jaw so that these jaws may immediately come into powerful and gripping engagement with the pipe or work.

N hat we claim is:

l; In a pipe wrench of the character described, a hollow shank, a fixed jaw arranged at one end of said shank, an operating rod journaled within `said shank and having a port-ion formed to constitute an operating screw and having ahelical groove, said hollow shank having a longitudinal slot adjacent the operating screw and a second longitudinal slot ladjacent the helical groove, a travelling sleeve slidably mounted on the hollow shank and having a pin eX- tending through the adjacent slot and cooperating with the helical groove, a carrier slidably mounted on the shank and including side plates ande-nd plates, said side plates and one of said end plates having sliding engagement with the shank, a nut fitting in said frame and extending through the adjacent slot and having threads engageable with the operating screw,` said nut having laterally extending lguide arms engaging the shank and outwardly extending attaching arms engaging the side plates of the carrier, la movable jaw having sleeve imparts move-` having its other end eneaoeable with the t3 b Q nut whereby said pivoted jaw is urged into operative position,

2. ln a pipe wrench of the character described, a hollow shank, a iixed jaw arranged at'one end of said shank, an operatrod journaled within said shank and having a portion formed to constitute an operating screw and having a helical groove, said hollow shank having a longitudinal slot adjacent the operating screw and a second longitudinal slot adjacent Athe helical groove, a travelling sleeve slidably mounted on` the hollow shank and having a pin extending through the adjacent' slot and cooperating with the helical groove, a carrier slidably mounted on the shank and including side plates and end plates, said side plates and one ot' said end plates having sliding engagement with the shank, a nut litting in said frame and extending through the adjacent slot and having threads engageable with the operating screw, said nut having laterally extending guide arms engaging the shank and outwardly extending attaching arms engaging the side plates oi the carrier, a movable jaw having a shank received between the side plates oli the carrier, a pivot pin for pivotally connecting the shank of the movable jaw to the carrier, said pi'yot pin also eX- tending through the attaching arms of the nut for securing` it in position on the carrier.

nnwiN J. Evans. escasa n HnMrI-nLL.