US2805593A - Ratchet-type pipe wrench having crank-type handles - Google Patents
Ratchet-type pipe wrench having crank-type handles Download PDFInfo
- Publication number
- US2805593A US2805593A US493743A US49374355A US2805593A US 2805593 A US2805593 A US 2805593A US 493743 A US493743 A US 493743A US 49374355 A US49374355 A US 49374355A US 2805593 A US2805593 A US 2805593A
- Authority
- US
- United States
- Prior art keywords
- wrench
- pipe
- type
- dog
- ratchet
- 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
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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
-
- 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
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
-
- 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
- B25B13/5075—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 jaws moving along radial cams or by excentric disks in a cage structure at least partially surrounding the pipe
Definitions
- This invention relates to a wrench and more particularly to the type of Wrench used to join together sections of pipe in the laying of petroleum pipe lines although the use of this invention is not necessarily limited to that use.
- An object of this invention is to provide an improved means for gripping and turning pipe sections with a Wrench so constructed as to be self-adjusting to the diameter of the pipe and one which does not, therefore, require tedious or time-consuming manual adjustments.
- a further object of this invention is to provide a selfadjusting wrench for the gripping and turning of sections of pipe, said wrench being so constructed as to provide means for gripping the pipe securely at three separate points about its diameter to prevent initial rotation of the wrench relative to the pipe as encountered in wrenches of the tong and strap types in their various modifications.
- a further object of this invention is to provide by a wrench of the type herein described a means of releasing and removing the wrench from a section of pipe without finger manipulations subject to hindrances by heavy gloves or adverse working conditions.
- Figure 1 is an elevation of a wrench embodying the features of the present invention.
- Figure 2 is a side elevation.
- Figure 3 is a broken elevation of the wrench with the top frame plate removed to show the arrangement of the component parts and to illustrate the operation of the traveling dog, the release lever, and the engagement spring.
- the wrench as here illustrated in its preferred form for purposes of explanation, is constructed of two frame plates Jill and 1.0 of similar shape and function between and through which the other components are mounted. Each plate it and It) has an aperture 1.1 through which the pipe 12 to be turned is admitted.
- a bolt 13 Near the center of the wrench is a bolt 13 which fastens the two frame plates and 19' by means of an opposed nut 13 and secures a swingable dog 14 which is pivotally mounted to the bolt.
- Attached to the swingable dog 14 near its free end is the release lever 15 suspended between the frame plates 1t and it) but extending well beyond their limits to provide accessible means for manually altering the position of the dog 14.
- a coil spring 16 Attached to the opposite side of the dog 14 near its free end, is a coil spring 16 which is also secured to a coil-spring-mounting screw 17 between the frame plates, the coil spring biasing the free end of the dog 14 toward the pipe 12.
- the work-engaging face on the free end of the dog 14 is serrated as at 13 and is shaped as an arc eccentric to the pivot axis of the dog 1'4. This eccentric arc permits the dog 14 to accommodate itself to pipes of varying diameter and to accentuate its grip on the pipe 12 as the wrench is rotated in a clockwise direction as shown in Figure 1.
- a handle 2d At the end of the wrench opposite the aperture Elli is a handle 2d, the hand grips 21 of which are freely rotatable by reason of their being threaded onto opposite ends of a stud 22 which extends rotatably through the frame plates iii and 1t), and through a tubular spacer 23 located between said plates.
- the release lever 15 is manuaiiy depressed and the aperture 11 of the wrench is placed about the pipe 12 to be turned.
- the coil spring 16 swings the dog 14 against the pipe 12 so that, upon clockwise rotation of the wrench, as seen in Figures 1 and 3, the dog 14 will cam the pipe against the two serrated gripping surfaces 18.
- the operator of the wrench may then turn the pipe 12 and wrench together with a circular motion while never losing hand contact with the handle; or he may turn the pipe 12 by moving the wrench back and forth in an approximate straight line motion as is often necessary when the pipe is situated near the bottom of a ditch.
- the wrench accomplishes more effective turning when operated in a restricted straight line motion than do wrenches of the strap or tong variety because the three serrated surfaces incorporated herein greatly retard the initial rotation of the wrench relative to the pipe as occurs in the strap or tong types before the wrench takes hold.
- the release lever 15 is depressed and the wrench is removed'from the pipe.
- a pipe wrench comprising a pair of elongated flat frame members in spaced parallel relation and having congruent pipe-receiving apertures in corresponding ends thereof, a swingable dog pivoted between said frames intermediate the ends thereof, the free end of said dog being adapted to extend into the area defined by said apertures, fixed dogs secured between said frame in the end thereof adjacent said apertures and having pipe-engaging walls which project inwardly of the periphery of said apertures, a release lever secured to said swingable dog and extending outwardly between said frames at corresponding sides thereof, a spring mounted between said frames and attached to said swingable dog, said spring being arranged to normally move the free end of said swingable dog inwardly of the aperture, and a rotatable handle on each said frame at the end thereof opposite its aperture and perpendicular to a fiat surface of each said frame.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
Sept. 10, 1957 B. A. DARROW 2,805,593
RATCHET-TYPE PIPE WRENCH HAVING CRANK-TYPE HANDLES Filed March 11, 1955 mi ma 5M FIG. 2
B. A. DARRCW ATTORINEY gangsta Fatented i9, 195? fifiee assasas RATCHET-TWE PIPE WRENCH HAVING RANK-TYPE HANDLES Easil A. Darrow, Kermit, Tex.
Application March 11, 1955, Serial No. 493,743
1 Claim. (ill. till-97) This invention relates to a wrench and more particularly to the type of Wrench used to join together sections of pipe in the laying of petroleum pipe lines although the use of this invention is not necessarily limited to that use.
An object of this invention is to provide an improved means for gripping and turning pipe sections with a Wrench so constructed as to be self-adjusting to the diameter of the pipe and one which does not, therefore, require tedious or time-consuming manual adjustments.
A further object of this invention is to provide a selfadjusting wrench for the gripping and turning of sections of pipe, said wrench being so constructed as to provide means for gripping the pipe securely at three separate points about its diameter to prevent initial rotation of the wrench relative to the pipe as encountered in wrenches of the tong and strap types in their various modifications.
A further object of this invention is to provide by a wrench of the type herein described a means of releasing and removing the wrench from a section of pipe without finger manipulations subject to hindrances by heavy gloves or adverse working conditions.
In the drawings:
Figure 1 is an elevation of a wrench embodying the features of the present invention.
Figure 2 is a side elevation.
Figure 3 is a broken elevation of the wrench with the top frame plate removed to show the arrangement of the component parts and to illustrate the operation of the traveling dog, the release lever, and the engagement spring.
Referring to the drawings it will be noted that the wrench, as here illustrated in its preferred form for purposes of explanation, is constructed of two frame plates Jill and 1.0 of similar shape and function between and through which the other components are mounted. Each plate it and It) has an aperture 1.1 through which the pipe 12 to be turned is admitted. Near the center of the wrench is a bolt 13 which fastens the two frame plates and 19' by means of an opposed nut 13 and secures a swingable dog 14 which is pivotally mounted to the bolt. Attached to the swingable dog 14 near its free end is the release lever 15 suspended between the frame plates 1t and it) but extending well beyond their limits to provide accessible means for manually altering the position of the dog 14. Attached to the opposite side of the dog 14 near its free end, is a coil spring 16 which is also secured to a coil-spring-mounting screw 17 between the frame plates, the coil spring biasing the free end of the dog 14 toward the pipe 12. The work-engaging face on the free end of the dog 14 is serrated as at 13 and is shaped as an arc eccentric to the pivot axis of the dog 1'4. This eccentric arc permits the dog 14 to accommodate itself to pipes of varying diameter and to accentuate its grip on the pipe 12 as the wrench is rotated in a clockwise direction as shown in Figure 1.
Mounted between the frame plates 10 and 10' and about the aperture 11, approximately degrees from the dog 14 and approximately 120 degrees from each other, are two stationary dogs 19 fastened in a fixed position to the frame plates 10 and it) by two bolts and nuts. The inner work-engaging surfaces of the stationary dogs 18 project into the aperture 11 and, like the dog 14, are serrated for the purpose of gripping a pipe.
At the end of the wrench opposite the aperture Elli is a handle 2d, the hand grips 21 of which are freely rotatable by reason of their being threaded onto opposite ends of a stud 22 which extends rotatably through the frame plates iii and 1t), and through a tubular spacer 23 located between said plates.
In operation, the release lever 15 is manuaiiy depressed and the aperture 11 of the wrench is placed about the pipe 12 to be turned. When the release lever 15 is set free, the coil spring 16 swings the dog 14 against the pipe 12 so that, upon clockwise rotation of the wrench, as seen in Figures 1 and 3, the dog 14 will cam the pipe against the two serrated gripping surfaces 18. Making use of the rotatable hand grips, the operator of the wrench may then turn the pipe 12 and wrench together with a circular motion while never losing hand contact with the handle; or he may turn the pipe 12 by moving the wrench back and forth in an approximate straight line motion as is often necessary when the pipe is situated near the bottom of a ditch. It will be noted that the wrench accomplishes more effective turning when operated in a restricted straight line motion than do wrenches of the strap or tong variety because the three serrated surfaces incorporated herein greatly retard the initial rotation of the wrench relative to the pipe as occurs in the strap or tong types before the wrench takes hold. When the desired turning is accomplished the release lever 15 is depressed and the wrench is removed'from the pipe.
The invention isnot limited to the exemplary construction herein shown and described, but may be made in various ways within the scope of the appended claim.
What is claimed is:
A pipe wrench comprising a pair of elongated flat frame members in spaced parallel relation and having congruent pipe-receiving apertures in corresponding ends thereof, a swingable dog pivoted between said frames intermediate the ends thereof, the free end of said dog being adapted to extend into the area defined by said apertures, fixed dogs secured between said frame in the end thereof adjacent said apertures and having pipe-engaging walls which project inwardly of the periphery of said apertures, a release lever secured to said swingable dog and extending outwardly between said frames at corresponding sides thereof, a spring mounted between said frames and attached to said swingable dog, said spring being arranged to normally move the free end of said swingable dog inwardly of the aperture, and a rotatable handle on each said frame at the end thereof opposite its aperture and perpendicular to a fiat surface of each said frame.
iteterences Cited in the file of this patent UNITED STATES PATENTS 30,997 Wenzel Dec. 18, 1860 816,434 Claflin Mar. 27, 1906 1,322,643 Steen Nov. 25, 1919 1,424,045 Sprague July 25, 1922 2,418,864 Barggren Apr. 15, 1947 2,463,525 Deming Mar. 8, 1949 FOREIGN PATENTS 552 Great Britain Jan. 9, 1895
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US493743A US2805593A (en) | 1955-03-11 | 1955-03-11 | Ratchet-type pipe wrench having crank-type handles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US493743A US2805593A (en) | 1955-03-11 | 1955-03-11 | Ratchet-type pipe wrench having crank-type handles |
Publications (1)
Publication Number | Publication Date |
---|---|
US2805593A true US2805593A (en) | 1957-09-10 |
Family
ID=23961512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US493743A Expired - Lifetime US2805593A (en) | 1955-03-11 | 1955-03-11 | Ratchet-type pipe wrench having crank-type handles |
Country Status (1)
Country | Link |
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US (1) | US2805593A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2968977A (en) * | 1959-03-02 | 1961-01-24 | Charles J Wheeler | Pipe gripping device having eccentrically journalled gripping means |
US3059512A (en) * | 1959-09-04 | 1962-10-23 | Henry J Daugherty | Tube rotating apparatus |
WO2005065890A1 (en) * | 2004-01-02 | 2005-07-21 | Gunnar Kemppainen | Ratchet wrench and fastener therefor |
US20140116207A1 (en) * | 2012-10-26 | 2014-05-01 | New Way Tools Co., Ltd. | Simple Open-End Wrench |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US30997A (en) * | 1860-12-18 | wenzel | ||
GB189500552A (en) * | 1895-01-09 | 1896-01-04 | Thomas Gare | Improvements in Spanners and Pipe Wrenches. |
US816434A (en) * | 1904-07-12 | 1906-03-27 | William H Claflin | Wrench. |
US1322643A (en) * | 1919-11-25 | Pipe-wheitch | ||
US1424045A (en) * | 1921-09-12 | 1922-07-25 | Sprague George Edwin | Ratchet crank |
US2418864A (en) * | 1944-12-04 | 1947-04-15 | Dan L Klein | Lathe dog |
US2463525A (en) * | 1946-03-12 | 1949-03-08 | Robert E Deming | Wrench for cylindrical headed objects |
-
1955
- 1955-03-11 US US493743A patent/US2805593A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US30997A (en) * | 1860-12-18 | wenzel | ||
US1322643A (en) * | 1919-11-25 | Pipe-wheitch | ||
GB189500552A (en) * | 1895-01-09 | 1896-01-04 | Thomas Gare | Improvements in Spanners and Pipe Wrenches. |
US816434A (en) * | 1904-07-12 | 1906-03-27 | William H Claflin | Wrench. |
US1424045A (en) * | 1921-09-12 | 1922-07-25 | Sprague George Edwin | Ratchet crank |
US2418864A (en) * | 1944-12-04 | 1947-04-15 | Dan L Klein | Lathe dog |
US2463525A (en) * | 1946-03-12 | 1949-03-08 | Robert E Deming | Wrench for cylindrical headed objects |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2968977A (en) * | 1959-03-02 | 1961-01-24 | Charles J Wheeler | Pipe gripping device having eccentrically journalled gripping means |
US3059512A (en) * | 1959-09-04 | 1962-10-23 | Henry J Daugherty | Tube rotating apparatus |
WO2005065890A1 (en) * | 2004-01-02 | 2005-07-21 | Gunnar Kemppainen | Ratchet wrench and fastener therefor |
US20140116207A1 (en) * | 2012-10-26 | 2014-05-01 | New Way Tools Co., Ltd. | Simple Open-End Wrench |
US9186778B2 (en) * | 2012-10-26 | 2015-11-17 | New Way Tools Co., Ltd. | Simple open-end wrench |
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