US3188894A - Pipe wrench having a holding plate for a rockably mounted traveling outer jaw - Google Patents

Pipe wrench having a holding plate for a rockably mounted traveling outer jaw Download PDF

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Publication number
US3188894A
US3188894A US333805A US33380563A US3188894A US 3188894 A US3188894 A US 3188894A US 333805 A US333805 A US 333805A US 33380563 A US33380563 A US 33380563A US 3188894 A US3188894 A US 3188894A
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United States
Prior art keywords
holding plate
pipe wrench
present
pipe
outer jaw
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Expired - Lifetime
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US333805A
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Matsuoka Yoshinori
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TOHO KOKI KK
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TOHO KOKI KK
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    • 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
    • B25B13/5058—Linearly moving or adjustable, e.g. with an additional small tilting or rocking movement
    • 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
    • B25B13/10—Spanners; Wrenches with adjustable jaws
    • B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
    • B25B13/16—Spanners; Wrenches with adjustable jaws the jaws being slidable by screw or nut
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/02—Jaws

Definitions

  • Claim. (Cl. 81-101)
  • the present invention relates to a pipe wrench.
  • One object of the present invention is to provide a pipe wrench so constructed as to have a holding plate, which holds a movable jaw which will not slip out of a longitudinal slot provided on the back of a stationary jaw member.
  • Another object of the present invention is to provide a pipe wrench so constructed as to have a holding plate, which holds a movable jaw wherein the rocking movement of the movable jaw is free within said longitudinal slot of the stationary jaw member.
  • Still another object of the present invention is to provide a pipe wrench equipped with a sliding plate so constructed as to engage a movable jaw slidable in said longitudinal slot.
  • a further object of the present invention is to provide a pipe wrench in which the opposing gripping teeth are made of a hardened metal alloy of a strength considerably greater than conventional steel.
  • a further object of the present invention is to provide a pipe wrench in which the gripping force of the wrench is significantly increased by having one or a plurality of longitudinal grooves provided additionally on the conventional gripping teeth in a lateral direction with definite spacings.
  • Another object of the present invention is to supply a pipe wrench in which the opposing gripping teeth are formed with numerous projections of pyramid-like shape, whereby the gripping force of the wrench against the surface of a pipe is increased, completely preventing the gripping teeth from slipping on the surface of pipe.
  • FIG. 1 is the front view of the pipe wrench according to the present invention, partly sectioned;
  • FIG. 2 the bottom plan view thereof
  • FIG. 3 a longitudinal section through line III-III of FIG. 1;
  • FIG. 4 a perspective view of the holding plate of the pipe wrench according to the present invention.
  • FIGS. 5 and 6 are front views, respectively, of the gripping teeth of different types.
  • an idling slot 6 is provided in the central wall of a U shaped holding plate 5 displaceably fitted in the threaded portion 4 of the movable jaw 3, which is inserted through a long-itudinal slot 2 provided on the back of the stationary 3,188,894- Patented June 15, 1965 jaw member 1.
  • the holding plate 5 is held to the side Wall of the longitudinal slot 2 by a projection 8 of a screw 7 secured to the side wall of the stationary jaw member 1 and extending through the .slot 6 of the holding plate.
  • the jaw portion 9 of the stationary jaw member 1 has a toothed plate or grasping member 12 made of a hardened metal alloy steel and rigidly fitted to a base 11 in a frame 10 with 3 or 4 side edges.
  • the gripping teeth of the toothed plate 12 is constituted of numerous projections 13 of pyramid-like shape, as shown in FIG. 5 or with divided edges 15 formed by a plurality of parallel vertical grooves 14 cut on a plate provided with numerous parallel teeth, as shown in FIG. 6.
  • the movable jaw 3 also has a toothed plate 16 also of hardened metal alloy.
  • the movable jaw 3 inserted through the longitudinal slot 2 bored in the stationary jaw member 1, has the U-shaped holding plate 5 pivotally held on a projection 8 of the screw 7 projecting into said idling slot 6 of suitable shape in the central wall thereof, the holding plate 5 being restricted from lateral movement by said projection 8 and thereby prevented from falling out, and also the holding plate having light play between the idling hole 6 and the projection 8 of the screw 7 as its pivot, thus enabling it to grip or release the movable jaw member 3 by the front end or the rear end thereof.
  • the toothed plate 12 made of a hardened metal alloy is rigidly fitted to the base 11 in a frame with three or four side edges in the jaw 9 of the stationary jaw 1.
  • the affixing of the toothed plate can be performed in a simple manner.
  • the toothed plate 1 as shown in FIGS.
  • the pipe Wrench according to the present invention is free from the abrasion of the teeth and can be used permanently without affecting its Working condition.
  • the pipe wrench being constructed as described above, the gripping and turning of pipe can be performed smoothly, and in addition the gripping teeth being made of a hardened metal alloy on both jaws of the wrench, the durability thereof and its commercial value are greatly increased.
  • a pipe wrench comprising a stationary jaw member having a guide channel defined by upper, lower and side walls and provided with bores extending into said stationary jaw through said upper and lower walls, .a guide screw secured to one of said side walls and extending inwardly of said channel, a holding plate in said channel, said holding plate being formed with in-bent flanges and'an idling slot said-screwhe ing loosely received in P References Cited by'the Examiner d dl n ot, a mova e jaw having a t r de sha k UNITED STATES PATENTS" displaceable in said holding plate between said inben-t 838 552 12/06 L d a 1 portions, 21 pair of spiral springs received in each of said 1 70112O 2/29 5; bores respectively, for biasing the respective flanges of 5 8/50 i g 81-186 said holding plate, an adjusting screw in one of said V 2,680,396 6/54

Description

June 1965 YOSHINORI MATSUOKA 3,
PIPE WRENCH HAVING A HOLDING PLATE A ROCKABLY MOUNTED TRAVEL OUTER Filed Dec. 196s INVENTOR Yawn/0m Am 75. 0am UM-5 A m ATTORNEY United States Patent 3,188,894 PIPE WRENCH HAVING A HOLDING PLATE FOR 118A I E OCKABLY MOUNTED TRAVELiNG OUTER Yoshinori Matsuoka, Osaka, Japan, assignor to T0110 Koki Kabushiki Kaisha, Osaka, Japan Filed Dec. 27, 1963, Ser. No. 333,805 Claims priority, application Japan, Aug. 30, 1953, 38/64,822; Sept. 7, 1963, 38/68,115); Sept. 14, 1963, 38/69,491, 38/459,492
1 Claim. (Cl. 81-101) The present invention relates to a pipe wrench.
One object of the present invention is to provide a pipe wrench so constructed as to have a holding plate, which holds a movable jaw which will not slip out of a longitudinal slot provided on the back of a stationary jaw member.
Another object of the present invention is to provide a pipe wrench so constructed as to have a holding plate, which holds a movable jaw wherein the rocking movement of the movable jaw is free within said longitudinal slot of the stationary jaw member.
Still another object of the present invention is to provide a pipe wrench equipped with a sliding plate so constructed as to engage a movable jaw slidable in said longitudinal slot. A further object of the present invention is to provide a pipe wrench in which the opposing gripping teeth are made of a hardened metal alloy of a strength considerably greater than conventional steel.
A further object of the present invention is to provide a pipe wrench in which the gripping force of the wrench is significantly increased by having one or a plurality of longitudinal grooves provided additionally on the conventional gripping teeth in a lateral direction with definite spacings.
Another object of the present invention is to supply a pipe wrench in which the opposing gripping teeth are formed with numerous projections of pyramid-like shape, whereby the gripping force of the wrench against the surface of a pipe is increased, completely preventing the gripping teeth from slipping on the surface of pipe.
In consideration of the above objects and other objects that may be described hereinafter, the arrangement of the parts of the pipe wrench according to the present invention will be described in the following specification and in the accompanying claim hereof.
In the accompanying drawings illustrating an embodiment according to the present invention:
FIG. 1 is the front view of the pipe wrench according to the present invention, partly sectioned;
FIG. 2, the bottom plan view thereof;
:FIG. 3, a longitudinal section through line III-III of FIG. 1;
FIG. 4, a perspective view of the holding plate of the pipe wrench according to the present invention, and
FIGS. 5 and 6 are front views, respectively, of the gripping teeth of different types.
Referring now in detail to the present invent-ion with reference to the accompanying drawings, an idling slot 6 is provided in the central wall of a U shaped holding plate 5 displaceably fitted in the threaded portion 4 of the movable jaw 3, which is inserted through a long-itudinal slot 2 provided on the back of the stationary 3,188,894- Patented June 15, 1965 jaw member 1. The holding plate 5 is held to the side Wall of the longitudinal slot 2 by a projection 8 of a screw 7 secured to the side wall of the stationary jaw member 1 and extending through the .slot 6 of the holding plate. The jaw portion 9 of the stationary jaw member 1 has a toothed plate or grasping member 12 made of a hardened metal alloy steel and rigidly fitted to a base 11 in a frame 10 with 3 or 4 side edges. The gripping teeth of the toothed plate 12 is constituted of numerous projections 13 of pyramid-like shape, as shown in FIG. 5 or with divided edges 15 formed by a plurality of parallel vertical grooves 14 cut on a plate provided with numerous parallel teeth, as shown in FIG. 6.
The movable jaw 3 also has a toothed plate 16 also of hardened metal alloy.
In the drawings, numerals 17, 17 indicate springs biasing the upper and lower walls of said holding plate 5 and which are received in holes 18, 18' bored angularly in front and rear in the upper and lower portions adjacent the longitudinal slot 2. Numeral 19 indicates a screw for adjusting the tension of said spring 17.
Describing the operation of the pipe wrench according to the present invention the movable jaw 3, inserted through the longitudinal slot 2 bored in the stationary jaw member 1, has the U-shaped holding plate 5 pivotally held on a projection 8 of the screw 7 projecting into said idling slot 6 of suitable shape in the central wall thereof, the holding plate 5 being restricted from lateral movement by said projection 8 and thereby prevented from falling out, and also the holding plate having light play between the idling hole 6 and the projection 8 of the screw 7 as its pivot, thus enabling it to grip or release the movable jaw member 3 by the front end or the rear end thereof.
According to the present invention, the toothed plate 12 made of a hardened metal alloy is rigidly fitted to the base 11 in a frame with three or four side edges in the jaw 9 of the stationary jaw 1. The affixing of the toothed plate can be performed in a simple manner. The toothed plate 1 2, as shown in FIGS. 5 and 6, is provided with numerous projections 13 of pyramid-like shape, so-called diamond cuts, or divided edges 15 made by having one .or a plurality of vertical grooves cut on horizontal edges in parallel, whereby the grip of the teeth on the pipe becomes firm, and thereby the wrench is prevented from horizontal slipping and in addition, the teeth being made of a hardened metal alloy steel, the pipe Wrench according to the present invention is free from the abrasion of the teeth and can be used permanently without affecting its Working condition.
According to the present invention, the pipe wrench being constructed as described above, the gripping and turning of pipe can be performed smoothly, and in addition the gripping teeth being made of a hardened metal alloy on both jaws of the wrench, the durability thereof and its commercial value are greatly increased.
What is claimed:
A pipe wrench comprising a stationary jaw member having a guide channel defined by upper, lower and side walls and provided with bores extending into said stationary jaw through said upper and lower walls, .a guide screw secured to one of said side walls and extending inwardly of said channel, a holding plate in said channel, said holding plate being formed with in-bent flanges and'an idling slot said-screwhe ing loosely received in P References Cited by'the Examiner d dl n ot, a mova e jaw having a t r de sha k UNITED STATES PATENTS" displaceable in said holding plate between said inben-t 838 552 12/06 L d a 1 portions, 21 pair of spiral springs received in each of said 1 70112O 2/29 5; bores respectively, for biasing the respective flanges of 5 8/50 i g 81-186 said holding plate, an adjusting screw in one of said V 2,680,396 6/54 Wright 81-101 bores for ad usting the tension of one of said springs 2760 ,8/56 St Pierre and a pair of toothed grasping members secured to each of said jaws respectively for engaging the outer surface WILLIAM F prlmary Exammerof a pipe. MILTON s. MEI-IR; Examiner. I
US333805A 1963-08-30 1963-12-27 Pipe wrench having a holding plate for a rockably mounted traveling outer jaw Expired - Lifetime US3188894A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280671A (en) * 1965-02-08 1966-10-25 George V Woodling Teeth for gripping jaws
US3722256A (en) * 1971-04-01 1973-03-27 M Iascone Wire bending tool
US20100122612A1 (en) * 2008-11-14 2010-05-20 Superior Tool Corporation Pipe Wrench
US20140083260A1 (en) * 2012-09-25 2014-03-27 Emerson Electric Co. Pipe wrench with hook shank spacer
US20150196993A1 (en) * 2014-01-16 2015-07-16 Harry E. Reckhart Torque grip slip force pliers
US20150375371A1 (en) * 2014-01-16 2015-12-31 Channellock, Inc. Torque grip slip force pliers
US20210101262A1 (en) * 2018-12-13 2021-04-08 Hangzhou Great Star Industrial Co., Ltd. Pipe wrench
US11207762B2 (en) * 2018-03-30 2021-12-28 Milwaukee Electric Tool Corporation Pipe wrench
US11890742B2 (en) 2020-08-04 2024-02-06 Milwaukee Electric Tool Corporation Extendable wrench

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US838552A (en) * 1906-06-07 1906-12-18 John T Landers Convertible monkey and pipe wrench.
US1701120A (en) * 1927-08-09 1929-02-05 Carl Mcgregor Pipe wrench
US2517366A (en) * 1948-03-01 1950-08-01 Web Wilson Oil Tools Inc Pipe tong die
US2680396A (en) * 1951-10-12 1954-06-08 Ridge Tool Co Hook-jaw centering means for pipe wrenches
US2760395A (en) * 1954-03-25 1956-08-28 Pierre Henry St Wrench having yieldably biased pivotal outer jaw

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US838552A (en) * 1906-06-07 1906-12-18 John T Landers Convertible monkey and pipe wrench.
US1701120A (en) * 1927-08-09 1929-02-05 Carl Mcgregor Pipe wrench
US2517366A (en) * 1948-03-01 1950-08-01 Web Wilson Oil Tools Inc Pipe tong die
US2680396A (en) * 1951-10-12 1954-06-08 Ridge Tool Co Hook-jaw centering means for pipe wrenches
US2760395A (en) * 1954-03-25 1956-08-28 Pierre Henry St Wrench having yieldably biased pivotal outer jaw

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280671A (en) * 1965-02-08 1966-10-25 George V Woodling Teeth for gripping jaws
US3722256A (en) * 1971-04-01 1973-03-27 M Iascone Wire bending tool
US20100122612A1 (en) * 2008-11-14 2010-05-20 Superior Tool Corporation Pipe Wrench
US20140083260A1 (en) * 2012-09-25 2014-03-27 Emerson Electric Co. Pipe wrench with hook shank spacer
US9610676B2 (en) * 2012-09-25 2017-04-04 Emerson Electric Co. Pipe wrench with hook shank spacer
US20150196993A1 (en) * 2014-01-16 2015-07-16 Harry E. Reckhart Torque grip slip force pliers
US20150375371A1 (en) * 2014-01-16 2015-12-31 Channellock, Inc. Torque grip slip force pliers
US11207762B2 (en) * 2018-03-30 2021-12-28 Milwaukee Electric Tool Corporation Pipe wrench
US20220080560A1 (en) * 2018-03-30 2022-03-17 Milwaukee Electric Tool Corporation Pipe Wrench
US11731249B2 (en) * 2018-03-30 2023-08-22 Milwaukee Electric Tool Corporation Pipe wrench
US20210101262A1 (en) * 2018-12-13 2021-04-08 Hangzhou Great Star Industrial Co., Ltd. Pipe wrench
US11890742B2 (en) 2020-08-04 2024-02-06 Milwaukee Electric Tool Corporation Extendable wrench

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