US460230A - Three-gripped self-adjusting pipe-wrench - Google Patents
Three-gripped self-adjusting pipe-wrench Download PDFInfo
- Publication number
- US460230A US460230A US460230DA US460230A US 460230 A US460230 A US 460230A US 460230D A US460230D A US 460230DA US 460230 A US460230 A US 460230A
- Authority
- US
- United States
- Prior art keywords
- wrench
- jaw
- self
- pipe
- gripped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000001847 Jaw Anatomy 0.000 description 42
- 230000000875 corresponding Effects 0.000 description 4
- 239000000543 intermediate Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 210000001699 lower leg Anatomy 0.000 description 2
- 230000000630 rising Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
- B25B13/5008—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects
- B25B13/5016—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe
- B25B13/5025—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe using a pipe wrench type tool
- B25B13/5041—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects by externally gripping the pipe using a pipe wrench type tool with movable or adjustable jaws
- B25B13/505—Pivotally moving or adjustable
Definitions
- GUSTAF GUNNARSON OF SAN FRANCISCO, CALIFORNIA.
- My invention relates to improvements in pipe-wrenches; andtheobjects of myimprovements are, first, to provide a self-adjusting ,wrench that can be shifted instantly from one size of pipe to another and still afford a similar grip for small or large pipes, at the same time being very simple and strong; second, to provide a wrench that will grasp the pipe on three different sides with series of teeth graduated in size to the size of pipe they are bound to work upon, thereby affording a very strong hold and preventing the pipe from being crushed or flattened under hard screwing.
- Fig. 1 is a side view of the wrench, handle excluded, showing the principle of construction and its working.
- Fig. 2 is an edge view of the wrench in Fig. 1.
- Fig. 3 is aside view of pliers or tongs constructed on exactly the same principle as Fig. 1 and referring to the same description.
- the object is to provide a tool that can be worked with one hand.
- the C-formed jaw A is provided with two series of teeth m and n at an angle to each other m Z n which is determined by the leverage c 1 of the jaw B, as hereinafter stated, and is calculated to grip the pipe on two sides equally distant and opposite the grip of jaw B.
- the teeth are decreased in size toward the corner Z in proportion with the pipes they work upon.
- the jaw is farther extended to pivot c in a curved shape, in order to give room for jaw B when brought up close together. Its joining end is split and divided, so as to receive and hinge to the jaw B by means of a bolt or pivot c, or simply bolted one across the other, as in Fig. 3.
- the self-adj ustingjaw B which is extended as a lever d, forming thehandle of the wrench, is provided with a toothed curve 0, gradually rising from the pivot c in such shape that when it is brought against any size of pipe that can be held by the jaw A it will grasp any pipe at the same angle of leverage c 11 1 from a line drawn through the pivot c to the center of each pipe.
- This curved shape of jaw 13 is obtained by combining the tangents to all the circles a b and intermediate at the respective points 1 2 3 and intermediates found by laying off the angle of leverage 0 i1 .011 each circle from a line running through pivot c to center of each circle.
- the teeth decrease in size toward the end of the jaw proportionally with the pipes they act upon.
- a self-adj usting jaw B extended as a lever and having a curved series of graduated teeth 0, r5 constructed after the angle of leverage c t 1, which may be varied according to purpose, the jaw gripping the various pipes at this same angle and directly opposite the two grips of jaw A, with which it is hinged by the pivot c, 20 all substantially as shown, for the purpose specified.
Description
(No Model.)
G. GUNNARSON. THREE GRIPPED SELF ADJUSTING PIPE WRENCH.
Patented Sept. 29, 1891.
UNITED STATES PATENT OFFICE.-
GUSTAF GUNNARSON, OF SAN FRANCISCO, CALIFORNIA.
TH REE-GRIPPED SELF-ADJUSTING PIPE-WRENCH.
SPECIFICATION forming part of Letters Patent No. 460,230, dated September 29, 1891..
Application filed September 18, 1890. Serial No. 365,444 (No model.)
Three-Gripped Self-Adjusting Piperench,
of which the following is a specification.
My invention relates to improvements in pipe-wrenches; andtheobjects of myimprovements are, first, to provide a self-adjusting ,wrench that can be shifted instantly from one size of pipe to another and still afford a similar grip for small or large pipes, at the same time being very simple and strong; second, to provide a wrench that will grasp the pipe on three different sides with series of teeth graduated in size to the size of pipe they are bound to work upon, thereby affording a very strong hold and preventing the pipe from being crushed or flattened under hard screwing. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a side view of the wrench, handle excluded, showing the principle of construction and its working. Fig. 2 is an edge view of the wrench in Fig. 1. Fig. 3 is aside view of pliers or tongs constructed on exactly the same principle as Fig. 1 and referring to the same description. The object is to provide a tool that can be worked with one hand.
Similar letters refer to similar parts throughout the several views. .7
The C-formed jaw A is provided with two series of teeth m and n at an angle to each other m Z n which is determined by the leverage c 1 of the jaw B, as hereinafter stated, and is calculated to grip the pipe on two sides equally distant and opposite the grip of jaw B. The teeth are decreased in size toward the corner Z in proportion with the pipes they work upon. The jaw is farther extended to pivot c in a curved shape, in order to give room for jaw B when brought up close together. Its joining end is split and divided, so as to receive and hinge to the jaw B by means of a bolt or pivot c, or simply bolted one across the other, as in Fig. 3.
The self-adj ustingjaw B, which is extended as a lever d, forming thehandle of the wrench, is provided with a toothed curve 0, gradually rising from the pivot c in such shape that when it is brought against any size of pipe that can be held by the jaw A it will grasp any pipe at the same angle of leverage c 11 1 from a line drawn through the pivot c to the center of each pipe. This curved shape of jaw 13 is obtained by combining the tangents to all the circles a b and intermediate at the respective points 1 2 3 and intermediates found by laying off the angle of leverage 0 i1 .011 each circle from a line running through pivot c to center of each circle. The teeth decrease in size toward the end of the jaw proportionally with the pipes they act upon.
Two different positions of the jaw B against the pipes are shown by the dotted lines f and As light pipe or tubing affords less resistance to pressure, itrequires a wrench. built on larger angle, (longer leverage,) which divides the pressure more evenly around the pipe, but which has not so powerful grip as if the angle be smaller or the leverage shorter. I therefore do not confine my invention to any certain degree of angle or leverage, although thirty-five degrees angle, as shown in Fig. 1, has given good results for ordinary pipe-work.
\Vhen planning a wrench, I first draw the largest circle a, and across its center draw the dotted line 3', on which I lay the pivot c, as shown in Figs. 1 and 3, in the latter figure at a distance from the pipes that will give a moderate motion to the shanks. off the desired angle of leverage c i 1 from point 1. I draw the line h across center of circle a and lay the toothed side m of jaw A square across the linej, close to the circle a. The other toothed side a is laid in a corresponding position on the opposite side of line h, which line is indicating the corner Z of this jaw. I then draw all the different circles 011 the line h, all close to jaw A, marking off their angle of leverage 1- 2 3, &c., and the corresponding tangents, as shown, and lay off the jaw B on a separate piece of tracing-paper fastened rotary on the pivot 0, so it can be swung up to all the circles, commencing on the largest, and their tangents be marked off, forming the bend o of the jaw B.
In using this wrench the Workman only has to close the jaws tight around the pipe with one hand while he pulls the handle with the other in the direction indicated by the teeth.
Thus described, what- I claim as my inven- Then I mark tion, and desire to secure by Letters Patent, 1s
1. In a self adjusting wrench, pliers and tongs for screwing pipes and fittings, the combination of a j aw A, having two series of graduated teeth m and n at an angle to each other, m Z n determined by the angle of leverage a z' 1 for gripping the pipes on two sides equally opposite the grip of jaw B, with which jaw it 10 is hinged by the bolt 0, all substantially as set forth.
2. The combination, in awrench, pliers, and tongs for screwing pipes and fittings, &c., of
a self-adj usting jaw B, extended as a lever and having a curved series of graduated teeth 0, r5 constructed after the angle of leverage c t 1, which may be varied according to purpose, the jaw gripping the various pipes at this same angle and directly opposite the two grips of jaw A, with which it is hinged by the pivot c, 20 all substantially as shown, for the purpose specified.
GUSTAF GUNNARSON. Witnesses:
BURNETTE G. HASKELL, BENJIE B. HASKELL.
Publications (1)
Publication Number | Publication Date |
---|---|
US460230A true US460230A (en) | 1891-09-29 |
Family
ID=2529105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US460230D Expired - Lifetime US460230A (en) | Three-gripped self-adjusting pipe-wrench |
Country Status (1)
Country | Link |
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US (1) | US460230A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4306345A (en) * | 1979-09-21 | 1981-12-22 | Dearman Timothy Charles | Pipefitter's tool |
US4344215A (en) * | 1979-09-21 | 1982-08-17 | Dearman Timothy Charles | Pipefitter's tool |
US6393951B1 (en) * | 1996-11-14 | 2002-05-28 | Kapman Ab | Pipe wrench with differentiated tooth size |
US20030209109A1 (en) * | 2002-05-10 | 2003-11-13 | Emerson Electric Co. | Pivoting jaw pipe wrench |
US20090031866A1 (en) * | 2007-08-02 | 2009-02-05 | Bruce Galloway | Cam Compression Tool |
EP2065136A1 (en) * | 2007-11-28 | 2009-06-03 | MH Corporation | Pliers having greater Holding Force |
-
0
- US US460230D patent/US460230A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4306345A (en) * | 1979-09-21 | 1981-12-22 | Dearman Timothy Charles | Pipefitter's tool |
US4344215A (en) * | 1979-09-21 | 1982-08-17 | Dearman Timothy Charles | Pipefitter's tool |
US6393951B1 (en) * | 1996-11-14 | 2002-05-28 | Kapman Ab | Pipe wrench with differentiated tooth size |
US20030209109A1 (en) * | 2002-05-10 | 2003-11-13 | Emerson Electric Co. | Pivoting jaw pipe wrench |
US6742419B2 (en) * | 2002-05-10 | 2004-06-01 | Emerson Electric Co. | Pivoting jaw pipe wrench |
US20040154440A1 (en) * | 2002-05-10 | 2004-08-12 | Emerson Electric Co., A Corporation Of Missouri | Pivoting jaw pipe wrench |
US7044030B2 (en) | 2002-05-10 | 2006-05-16 | Emerson Electric Co. | Pivoting jaw pipe wrench |
US20090031866A1 (en) * | 2007-08-02 | 2009-02-05 | Bruce Galloway | Cam Compression Tool |
US8146462B2 (en) | 2007-08-02 | 2012-04-03 | Bruce Galloway | Cam compression tool |
EP2065136A1 (en) * | 2007-11-28 | 2009-06-03 | MH Corporation | Pliers having greater Holding Force |
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