US885120A

US885120A - Pipe-wrench.

Info

Publication number: US885120A
Application number: US26482305A
Authority: US
Inventors: George C Winslow
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-06-12
Filing date: 1905-06-12
Publication date: 1908-04-21
Anticipated expiration: 1925-04-21

Description

No. 885,120. PATENTED APR. 21, 1903.

- G. c. WlNsLow.

PIPE WRENCH. 1 APPLIOATION FILED JUNE 12, 1.905.

Z SHEETS-SHEET 1.

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Witnesses mitigar, onnron. f

GEORG C. WINSLOW, OF KALAMAZOO, MICHIGAN.

PIPE-WRENCH.

Specification of Letters Patent.

Patented April 21, 190s.

Application filed June 12, 1905. Serial'No. 264,823.

To all whom it may concern:

Be it known that I, GEORGE C. WINsLoW, a citizen of the United States, residing at the city and county of Kalamazoo, State of Michigan, have invented certain new and useful Improvements in Pipe-Wrenches, of which to provide an improved pipe wrenchv which isv adjustable without the aid of nut screws or the V like. Third, to provide an improved pipe wrench which is simple and economical in structure and very strong and durable.

Further objects, and objects relating to the structural details will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims. i

A structure embodying the features of my invention is clearly illustrated in the accompanying drawings forming a part of this specification, in which- Figure 1 is a detail view of my improved pipe wrench, partially in section, on a line corresponding to line 1 1 of Fig` 2. Fi 2 is a transverse sectional view taken, on a'Iine corresponding to line 2 2 of Fig. 1. Fil. v3 is a transverse sectional view taken onla ine corresponding to line 3-3 of Fig. 1. Fig. 4 is an edge view of the movable jaw and its shank. Fig. 5 is a detail transverse sectional view through the jaw B, taken on a line corresponding to line 5-5 of Fig. 1. Fig. Gisa detail longitudinal sectional view taken on a line correspondin to line 6-6 of Fig. 1, showing structura detailsk of the fixed jaw A. Fig. 7 is a side elevation view of a modiiied construction of my improved pipe wrench, partially in section, on a line corresponding to line 7-7 of Fig. 9. Fig. 8 is a detail side elevation view of my improved pipe wrench, partially in section, showing the parts in position to be adjusted. Fig. 9 is a detail rear edge view of the structure shown in Fi 7. Fig. 10 is a plan view ofthe bearing b ook D of they modified construction. j Fig. 11 is a detail sectional view taken ona line corresponding to line 11-11 of Fig. 8.

In the drawings similar letters of reference refer to similar parts throughout the several views, and the sectional lines are taken looking in the direction of the little arrows at the ends of the section lines.

Referring. to the lettered arts of the `drawings, I provide a lever-li e handle A having a relatively iiXed jaw A on the inner end thereof. The jaw A is preferably formed with side plates adapted to embrace the end of the lever and is retained thereon by the pin a. An adjustable jaw B is provided carried by the shank B. The jaw B and its shank B are preferably formed of a piece of boiler plate folded upon itself, as clearly appears in Fig. 4. The engaging face B is inserted in the fold of the plate and retained therein by a rivet or pin b. I thus secure a jaw and shank which possesses great strength and one which is economical to produce. The adjustable jaw is secured to the handleA by means of the loop-like link C through which its shank is arranged. The link C is pivotally secured to the handle or lever yA by the pin a. The link C is also preferably formed of boiler plate. C projects forwardly so that its outer end overhangs the relatively stationary jaw carried by the handle or lever A.

In operation, the inner end of the lever or handle A engages the inner edge of the shank B of the movable jaw B 'The engaging portion of the handle is preferably cam shaped.

The tendency of this, on account of the location of the bearing point of the link C for the shank B, is to throw the jaw B down into engagement with the pipe or object. The forwardly projecting link C is also of advantage in'that it brings the bearing point for the shank B as close as possible to its jaw, thereby lessening the liability of breaking or j bending the same under great strain.

The upper edge of the shank B is provided with forwardly rejecting teeth or serrations which engage t e oppositely arranged teeth or serrations of the bearing block D by means of which the slipping of the jaw is prevented and its adjustment accomplished.

Bearing block D is provided with a rear- Vwardly projecting finger piece byrneans of which it may be lifted out of engagement i with the shank B thereby permitting its adjustment. `The bearing block D is arranged over a crossieee c formed on the link C. The bearing lock is curved to pass up between the cross-piece on top of the link, as

clearly appears in Fig. 1. A blade spring D is secured to the under side of the said finger piece extension of the bearing block and is i arranged to engage the cross-piece c. The tendency of this spring is to force the bearing block normally into engagement with the shank B.

In Fig. 1, I have illustrated my improved pipe wrench engaged upon a pipe. lo disengage the pipe from the wrench, it is only necessary to move the handle or lever A rearwardly which releases the jaws. To adjust the jaws, it is only necessary, if it is desired to close them up, to pull or push the movable jaw inwardly. If `it is desired to open the jaws, the bearing block D is lifted by pressure upon the finger piece thereof. This allows the jaw B to be moved outwardly. Upon releasing the bearing block, it is forced into engagement with the shank B by the spring D.

A pin b projects laterally at the rear end of the shank B to prevent its withdrawal from the link. To relieve the bearing pin a of the link C from excessive strain when the wrench is in operation, a stop pin c is arranged through tlie lower end of the link to engage the handle A. To further relieve the strain on the pivot pin l), a curved seat or bearing is formed on the jaw A for the link C.

When the'shank B is made of a piece of boiler iron folded upon itself, as I have stated is preferred by me, it possesses sufhcient lateral lspring to prevent its accidental slipping within the link when the wrench is being adjusted.

In the modified construction shown in Figs. 7 to 11 inclusive, the link is shouldered at c at its'rear edge to form a rest for the shoulderc" formed on the bearing block D. The spring D in this construction is arranged in the linkwso that it bears upon the back of the bearing block. In Fig. 8, the bearing block is shown thrown up to release the adjustable jaw. rIhe modified construction shown in Figs. 7 to 11 inclusive, is adapted for light work, while the structure shown in Figs. 1 to 6 inclusive, is especially designed for heavy work, though it is applicable for smaller sizes of wrenches, or wrenches for light work, and the structure in Figs. 7 to 11, may also be used for heavy work, although, as I have stated, I have particularly designed the same for light work.

With the parts arranged as I have illustrated and described, I secure a wrench which is very quickly and easily adjusted to any pipe or object within its scope. My improved wrench is adapted for use where it is difficult to manipulate other wrenches on account of the confined area in which it must be used. It is quickly detached from an object, it being only necessary to reverse the movement of the handle to release the jaws.

The p arts of my improved pipe wrench are very simple and economical to produce and the structure is very strong and durable.

IOn account of the arrangement of the handle and the link in relation to the movable jaw and its shank, the tendency is from the irst movement to grip the jaws upon the pipe or other object and the link is so arraged that the liability of bending or twisting the shank forwardly projecting loop-shaped link pivoted on said handle at its inner end; a movable jaw; a shank therefor having serrations or teeth on its outer edge, said jaw and shank being formed of a piece of plate metal folded upon itself. arranged through said link to be engaged by the inner end of said handle, the engaging portion of the saidv handle with said shank being curved; a gripping face for said movable jaw inserted in the fold of said plate; a bearing block, provided with teeth or serrations corresponding to those of said shank and having a rearwardly projecting finger piece arranged in the outer end of said link; a cross-bar on said loop adapted to serve as a fulcruiii for said bearing block; and a spring carried by said bearing block, arranged to engage said cross-piece, for the purpose specified.

2. The combination of a handle; a relatively fixed jaw on the inner end thereof; a forwardly projecting loop-shaped link pivoted on said handle at its inner end; a movable jaw; a shank therefor having serrations or teeth on its outer edge, said jaw and shank being formed of a piece of plate metal folded upon itself, arranged through said link to be engaged by the inner end of said handle, the engaging portion of the said I handle with said shank being curved a gripping face for said movable jaw inserted in the fold of said plate; a bearing block, provided with teeth or serrations correspoiuling to those of said shank and having a rearwardly projecting linger piece, arranged in the outer end of said link; and a spring arranged to hold said bearing block normally in engagement with said shank, for the purpose specified.

3. The combination of a handle; a relatively fixed jaw on the inner end thereof; a forwardly projecting loop-shaped link pivoted on said handle at its inner end arranged to swing forwardlyeover the said fixed jaw; provided with lteeth or serrations correa movable jaw; a shank ltherefor having ser-` vsponding to those of said shank and having a l rearwardly projecting finger piece arrangedv rations or teeth' on its outer edge, said jaw andshank being formed of apiece of plate metal folded upon itself, arranged `through said link to be engaged by the inner endof` said handle, the engaging portiongf the` said handle With said shank' being curved; a gripping face for said movable jaw inserted in the fold of said plate; and abearing block provided with teeth or serrationscorresponding to those of said shank and having arearwardly projecting finger piece arranged in the outer end of saidlink; vfor the purposey specified. f j

4. The combination of a handle; a `relatively fixed jaw on the inner end thereof; a forwardly projecting loop-shaped link pivoted on said handleat itsinnerendga mov.

able jaw; a shank therefor having ,serrations or teeth on its outer edge, saidj aw andshank being formed of a piece of plate metal folded upon itself, arranged through said .link a gripping face for said movable; jaw inserted. in the fold of said plate; a bearingblock ro-` .vided with teeth or serrations correspon' ing to those of said shank and havinga lrearwardly projecting fin er iece,arranged in the outer end of saili` a cross-bar on said loop adapted to serve as a fulcrum for said bearing block; anda spring carried. by said bearing block, arranged to engage said cross-piece, for the purpose specified.

5. The combination of a handle; `a relatively fixed jaw ontheinner enduthereof; `a forwardly projecting i loop-shaped link pivoted on said handle at itsinner end Ya movable jaw; a shanktherefor havingserrations or teeth on its outer edge, said jawandshank being formed of a pieceof'platefmetal; folded;

upon itself, arranged through said link;`fa gripping face for said movable jaw inserted in the fold of said plate ,f ,a`bearinglblock,4 proj vided with teeth or serrations corresponding to those of said shank and having a; rearwardly projecting finger piece arrang'edinthe outer end of said link; anda spring arranged to Yhold said bearing block normally .in `engageinent with said shankffor,` the purpose specified. f y n 1 i 6. The'combination' of a handle; ya relativelyiixed jaw on "the inner end thereof; a`

forwardly projecting loop-shaped `link pivoted on said'handleati-ts inner end;`a mov-V able aw; a shank therefonhavingserrations` j or teeth onits outer edge, saidjaw and shank being formed of a piece of plate metal folded upon itself, arranged throughsaid link; a` gripping face forsaid movable jaw inserted" in the foldof said plate; anda bearing block, j

said movable jaw inserted in the fold of said plate, forthe purpose specified.

8. The combination with a handle, of a said handle-,having a curved bearing surface on its, rear edge; la movable jaw; a shank therefor having a' bearing surface on its front `edge adapted to rest on said bearing surface on, the rear edge of said handle and having serrations or teeth vin its rear edge; a. looplike link adapted to receive said shank arranged on said handle to embrace the same, said link being pivoted to said handle; 'a bearing block for said shank loosely arranged in thefouter end of said link having serrarelatively fixed jaw on the inner end thereof,

tionsorteeth on itsinner edge adapted to Ilgage said shank; and a cross-bar at the rearedge of said link over which saidl bearing block is loosely arranged adapted to serve as a fulcrum therefor, for the purpose specified. v

' 9.The combination with a handle, of` a relatively fixed jaw on the inner end thereof,

said handle having a'curved bearing surface Fon its rear edge; a movable jaw; a shank thereforhaving a bearing surface on its front edge adapted to rest on said bearing surface on the rear edge of said handle and having serrations or teeth on its rear edge; a looplike link adapted to receive said shank pivoted on said handle, said link being adapted to overhang said fixed jaw; and a bearing lblock for said shank arranged in the outer end of said'- link, said bearing block having serrations or teeth on its inner edge adapted to engage said shank for adjustably securing the 1 same in positionin said link, the rear pointl of engagement of said bearing block with said shank beingin a plane in front of the plane of the pivot of ,said link, for the purpose specified. Y i

In witness whereof l have hereunto set my hand in the presence of two witnesses.

j Y j, GEORGE C. WINSLOW. `VVitnessesz f yO'rrs A. EARL,

A. J. ALBER.