US871436A

US871436A - Pipe-wrench.

Info

Publication number: US871436A
Application number: US27943705A
Authority: US
Inventors: Roy Parmelee
Original assignee: PARMELEE WRENCH Co
Current assignee: PARMELEE WRENCH Co
Priority date: 1905-09-21
Filing date: 1905-09-21
Publication date: 1907-11-19
Anticipated expiration: 1924-11-19

Description

PATENTED NOV. 19, 1907.

R. PARMELBE.

.PIPE WRENCH. APPLIOATION FILED SEPT. 21,1005.

I NI E STATES PATENT OFFIOE.

BOY, PARMELEE, 0F cIIIcAeo; ILLINOIs, As sIeNon 'ro PARMELEE WRENCH COMPANY, OF

, CHICAGO, ILLINOIS, ACORPORATION OF ILLINOIS.

PIPE-WRENCH.

Specification of Letters Patent.

Patented Nov. 19, 1907. 5

Application filed September 21. 1905." Serial No- 279.48'l.

To an whom "it may concern: y

Be it known that I, ROY PARMELEE, azciti zen of the United States, residing at Chicago, in the county of Cook and State of Illinois,

have invented certain new and useful Improvement's in Pipe-Wrenches, of which the I claimed 11). said Parmelee patent and the Obj ect is to provide improved means for locking the girth to the fulcrum piece on which one end of the girth is fulcrumed, the features of advantage and utility of such improved means being apparent from the description hereinafter given.

Figure l is an elevation of my improvedplpe wrench In one position;

another posltion; Fig. 3 a detailed view of In thefaccompanying drawing the head or abutment 7; Fig. 4 an elevation of a portion of a pipe wrench illustrating a 'modified form of construction; and Fig'. 5 a

perspective of the adjusted sleeve or nut of the construction shown in Fig. 3 and Figs. 6 and 7 detailed views of a modified form of construction for the operation of the head or abutment.

The pipe wrench, as herein shown, compn'ses having at its inner end a fulcrum piece 2 on which is fulcrumed the girth which in the present instance is composed of three see tions, to-wit, the base section3, middle section 4 and the end or lip section 5. The lip section, in this character of pipe wrench, Is arranged to, engage and bear against a shoulder 6 formed on'the fulcrum piece whereby the girth is adapted to tightly clamp a pipe or the like which is to be operated upon.

The purpose of my present invention is to provide improved means, cooperating with the base section 3 of the girth in such manner as to prevent disengagement of the girth from the pi e occasioned through any disengagement o the lip section of the girth from the shoulder 6 and also to grip the wrench on the pipe. In the present Instance such means comprises a movable head or abut- Fig. 2 a similar view thereof in essentially a handle proper marked 1 -1 and 2.

portion of the fulcrum'piece and to be pro jected, by manual operation, against the base section 4. As herein shown and by preference the base section is formed with two parallel ribs 3 and in order to cooperate therewith said head or abutment 7 is formed with a recessed middle portion so as to form projecting end portions 7 arranged to bear directly against and to engage said ribs 3. In this manner when the head or abutment 7 is projected against the base section 3, in the' manner hereinafter described, such base section is held securely against displacement by a pressure exerted at twodifferent oints on opposlte sides of Its central longitu al line that Is on opposlte sldes of the central longiment 7 arranged to slide upon a recessed I tudinal axis of the girth when viewed as in Fig. 2, and at the same time, the wrench is tightly gripped onto the pipe, inasmuch as the pressure of themovable head is exerted against the girth at a point on one side of the plvotal point or pin 8 of its base section. As

'above explained, the pressure of the movable piece or head is exerted at two points located on either side of a plane assing through the longitudinal axis of the andle and at right angles to the lon itudinal axis of the pipe operated upon (see Fig. 2), and also located on one side of the pivotal axis of the base section of the girth (see Figs. 1, 2 and '6).

In order to manually operate this head or abutment 7 a sleeve 9 is rovided which in the form of construction 1 lustrated in Figs. 1 and 2 extends substantially the full length of the handle proper but which in the modification of Figs. 4 and 5 and also of Figs. 6 and 7, extends only part-Way thereof, the length of the sleeve being immaterial in the broader aspect of my invention but preferably of the same length as the handle as shown in Figs.

This sleeve has a pin and slot connection with the handle proper, in the resent instance the sleeve having an ob 'que slot 10 which receives a stud or pin 11 in the handle. By reason of this connection beasmuch as the-shoulder 7 of such head or abutment is arranged inthe path of movement of the inner end of the sleeve. In orderto provide a proper bearin for the sliding movement of the head or a utment, the same has a flat shank or stem portion 7 received and arranged to slide in a longitudinal groove or channel 1 in the handle, Fig. 1.

, Thus when the sleeve is turned in one direction the same is moved longitudinally and the head or abutment thereby. moved towards the'base section of the girth to hold the latter against displacement and to thereby prevent disengagement of the li section.

Consequentlyby sim ly turning t e sleeve the fixed relation of a l of the sections of the girth upon the pi e is maintained.

Referrin to t e modified form of construction ilustrated'in Figs. 4 and 5,. this construction is substantially the same as that already described with thefexception of the length of the sleeve which here terminates where the other sleeve had its pin and slot connection with the handle. According to yet so far as my invention is broadly considsleeve 13 the head is caused to move in one ered, the head or abutment 7 may be 0 erated' in a slightly different manner as ilustrated in Figs. 6 and 7 wherein a sleeve 13 is shown as externally screw threaded to engage screw threads formed upon the handle and adapted to press upon the head or abutment 14 which is similar to the head 7 with the exception of a hole 15 to receive a pin 16 in the sleeve 13. By turning or rotating the direction or the other, according to the direction of rotation, with the same results as in respect to the other forms of construction.

By preference, the inner ends of the ribs 3 are enlarged so as to provide shoulders or f humps against which the head or abutment is arranged to press, the point of contact be-' in as indicated clearly in .Fig. 1, on one si e of the ivotal point or axis of the base section 3 of the girth, with the result that when the head or abutment 7 is forced against the girth, in the manner already explained, such girthis not only prevented from unlocking, but is also gripped the more securely and effectively upon the pipe which is encompassed by the girth. Moreover, al-

though my invention is herein shown as applied to wrenches of the girth type and for convenience in description has been illustrated and described in connection with such type of wrench, yet it will be understood that my invention is not limited thereto, but that itmay be applied to other forms of wrenches having a swinging on pivoted jaw section.

I claim; 1. A pipe wrench comprising 'a hand portion, a girth fulcrumed thereon and adapted to engage the handle portion with its free end, and-means for preventing disengage ment of the. girth from the pipe or the like operated upon, consisting of a head movable longitudinally of the handle and arranged to engage the girth on either side of a plane passing through the longitudinal axis'of the upon consisting of a head movable longitudinally of the handle having rojecting bearing portions on either side oi its longitudinal axis and adapted to' engage said girth on either side of a planepassing through the longitudinal axis of the handle and at right angles to the longitudinal axis of the pipe.

3. A pipe wrench comprising a handle, a sectional girth fulcrumed thereon and adapted to engage the handle portion with its free end, and means for preventing disengagement ofthe girth from the pipe or the like operated u on comprising a head movable longitudina ly of the handle and having projecting bearing portions arranged to engage and press against one section of the girth on either side of a plane passing through the longitudinal axis of the pipe, the engaged section of the girth having projecting portions or ribs which are contacted by said pro ecting portions of the head.

4. A ipe wrench comprising a handle, a girth fu crumed thereon and adapted to engage the handle portion with its free end, and means for preventing disengagement of the girth from the pipe or the like operated upon,

comprising a head arranged to be projected against said girth to move the same on its fulcrum and provided with a shank or stem sliding longitudinally on the. handle, and a sleeve around the handle and cooperating with said head, whereby the girth is locked to the pi e.

5. ipe wrench comprisin a handle, a girth fuihrumed'thereonand a apted to engage the handle with its free end, and means for preventing disengagement of the girth from the pipe or the like operated on, comprising a head arranged to be projected against said girth and provided with a shank or stem slidinglongitudinally on the handle, said handle having a longitudinal groove receiving said shank, and a sleeve around the handle and cooperating with said head.

6. A pipe Wrench comprising a sectional girth, a head on which the base section of the v or pin projecting fulcrumed and which is engaged by" the free end thereof when applied to the pipe or the like operated uponfa movable member adapted to be pressed against such base section togrip the girth on to thepipe, and a rotatable eeve cooperating with such memher to so move the same, said member being arranged to be plrojected against said base section on one e of its fulcrum.

7 ,A wrench comprising a handle, a section crum thereon, the base section 3 of the giurlth having projections 3 at one side of the, crumthei'eof'and the outer section coopfigating with the handle when the pipe or the e is engaged, a head 7 arran ed to slide u on the exterior of the handle and to contact t e said projections, and a sleeve around the handle and arranged to move longitudinally to force the head against the projections.

8. A ipe wrench comprising a handl girth gage the handle with its free end when the pipe or the like operated upon is en aged thereby, and means for preventing isengagement of the girth from the pipe comprismg a head arranged to be 1projected against said girth and provided wit a shank or stem sliding longitudinally on the handle, a stud fromthe handle; and a with said stud to cause the sleeve upon partial rotation of the stem, said head being sleeve cooperating arranged in the-path of longitudinal movement, of the sleeve.

- 9. A upipe wrench comprising a handle, a girth f crumed thereon and arranged to engage the same as to its free end when applied to the ipe or the like operated upon, and means or preventing disengagement of the girth from the pipe comprising 'a head arranged to bet'pro ected against said girth and providedwi ashank or stem sliding longicrumed thereon and a apte'd to entudinall on the handle and a sleeve around the ban e and having a pin-and-slot connection with the handle to cause longitudinal movement of such sleeve upon partial rotation of the latter, said head being arranged in the path of longitudinal movement of the sleeve.

10. A pipe wrench comprising a handle, a girth fulcrumed thereon and arranged to engage the same as to its free end when applied to the pipeor the like operated upon, and means or preventing disengagement of the girth from the pipe comprising a head arranged to be ro ected against said girth and provided wit a shank or stem sliding longitudinall; on the handle, a sleeve arranged around the handle and having an obli ue slot and a pin projecting from the ban 1e and passing throu h the slot, whereby partial rotation of the s eeve moves the latter longitu dinally of the handle,- said head being arranged in the path of longitudinal movement of the sleeve.

' 11. A pipe wrench comprising a handle, a girth fulcrumed thereon and arranged to engage the same as to its free end when applied to the pipe or the like operated upon, and means or preventing disengagement of the girth from the ipe comprising a head arranged to be ro ected against said girth and provided wit- -a shank or stem sliding longitudinally on the handle and a sleeve arranged around and substantially of the same length as the sleeve and having a pin-and-slot connection with the handle to cause longitudinal movement, said head being arranged in the path of longitudinal movement of the sleeve.

' ROY PARMELEE. Witnesses S. E. HIBBEN, V Loms B. ERWIN.