US2777348A - Jaw face attaching means for wrench jaw constructions - Google Patents

Jaw face attaching means for wrench jaw constructions Download PDF

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Publication number
US2777348A
US2777348A US531975A US53197555A US2777348A US 2777348 A US2777348 A US 2777348A US 531975 A US531975 A US 531975A US 53197555 A US53197555 A US 53197555A US 2777348 A US2777348 A US 2777348A
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United States
Prior art keywords
jaw
groove
wrench
plate
dowel pin
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Expired - Lifetime
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US531975A
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Wraight Frank Leslie
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Individual
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Priority to US531975A priority Critical patent/US2777348A/en
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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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/02—Jaws
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/02—Jaws
    • B25B7/04—Jaws adjustable

Definitions

  • the object of this invention is to provide a wrench in which a separate plate is detachably and firmly fixed without any liability of lateral or other movement under,
  • Figure l is a perspective view of a wrench fitted with gripping plates according to this invention.
  • Figure 2 is a side elevation of the adjustable jaw.
  • Figure 3 is. a section on line III-III of Figure 2.
  • Figure 4 is a. front elevation of the jaw shown by Figure 2.
  • Figure 5 is an end view of a dowel pin.
  • Figure 6 is a side elevation
  • Figure 7 is a face view of a gripping plate.
  • the wrench comprises a handle part 1 having a gripping jaw 2 and a part 3 adjustable on the part 4 pivoted on the handle part 1 and having a gripping jaw 5.
  • the adjustable jaw of the wrench has a groove 6 transversely thereacross which is dove-tailed on one side and receives a separate insert plate 7 of hardened steel having a serrated or other gripping face. against lateral movement in the groove 6 and firmly anchored on the bed of the groove 6 by means of a dowel pin 8 formed of a round pin having grooves 9 in opposite sides to form a dove-tail.
  • Registering grooves 10 and 11 are formed in the jaw 5 and plate 7 longitudinally thereof, the groove 11 in the insert being dove-tail in cross section and the groove 10 in the body of the jaw being part cylindrical.
  • This latter groove is more than a semi-circle in cross section and the cylindrical portion of the dowel pin is more than a semi-circle in cross section, so that the dowel is held in the body of the jaw against lateral movement and holds the plate 7 bedded in the groove in the jaw, the shoulders 12 formed by the grooves in the dowel lying flat or parallel with the bed
  • the insert is firmly locked of the groove.
  • the dowel pin passes through a hole 13 in front of the jaw forming one side of the transverse groove 6 for the insert and into a hole 14 in the wall forming the other side of the groove.
  • a wrench having gripping jaws, a groove transversely from side to side across the width of a jaw, a separate gripping plate mounted in the groove with the front and rear edges of said plate lying against the sides of the groove, a dowel pin receiving groove in the bottom of said plate receiving groove which runs longitudinally of the jaw and at right angles to said groove passing transversely across the jaw and is part circular in cross section with its centre on the outer side of the mouth of the dowel pin receiving groove, circular holes in the jaw at the side walls of the first mentioned groove and co-axial with said dowel pin receiving groove, a dove-tailed groove in the bottom of said gripping plate and in register with said dowel pin receiving groove and a dowel pin having notches in each side to form a dove-tail longitudinal projection and a part cylindrical portion of more than a half-circle in circumference so that the dowel pin is constrained to have axial movement only in the said dowel engaging grooves and thereby locks the gripping plate bedded on the bottom of said plate engaging groove, the dowel pin also engaging
  • a wrench having gripping jaws, a groove transversely from side to side across the width of a jaw, a separate gripping plate mounted in the groove with the front and rear edges of said plate lying against the sides of the groove, a dowel pin receiving groove in the bottom of said plate receiving groove which runs longitudinally of the jaw and at right angles to said groove passing transversely across the jaw and is part circular in cross section, circular holes in the jaw at the side walls of the first mentioned groove and co-axial with said dowel pin receiving groove, a dove-tailed groove in the bottom of said gripping plate and in register with said dowel pin receiving groove and a dowel pin having notches in each side to form a dove-tail longitudinal projection and a part cylindrical portion of more than a half-circle in circumference so that the dowel pin is constrained to have axial movement only in the said dowel engaging grooves and thereby locks the gripping plate bedded on the bottom of said plate engaging groove, the dowel pin also engaging in said circular holes in each side of said plate engaging groove.

Description

Jan. 15, 1957 F. 1.. WRAIGHT 2,777,348
JAW FACE ATTACHING MEANS FOR WRENCH JAW CONSTRUCTION-S Filed-Sept. 1, 1955 F/GB.
Inventor fian'k ZesZier fi ra Wk? y I W A tlorneys United States Patent JAW FACE ATTACHING MEANS FOR WRENCH JAW CONSTRUCTIONS This invention relates to wrenches. Gripping jaws of these tools are sometimes fitted with separate gripping plates which are replaceable and which have been fixed by various methods, but on account of the heavy strain placed on the plates when the wrench is in use, the plates become loose. Screwed pins passing through the plates have been used but such screws have been found to become damaged and broken. Pins have been used to bear on the back of a gripping plate, but as the plate only beds on the screw, lateral movement takes place under heavy duty.
The object of this invention is to provide a wrench in which a separate plate is detachably and firmly fixed without any liability of lateral or other movement under,
heavy strain.
Referring to the drawings:
Figure l is a perspective view of a wrench fitted with gripping plates according to this invention.
Figure 2 is a side elevation of the adjustable jaw.
Figure 3 is. a section on line III-III of Figure 2.
Figure 4 is a. front elevation of the jaw shown by Figure 2.
Figure 5 is an end view of a dowel pin.
Figure 6 is a side elevation, and
Figure 7 is a face view of a gripping plate.
According to a convenient embodiment of this inventicn, the wrench comprises a handle part 1 having a gripping jaw 2 and a part 3 adjustable on the part 4 pivoted on the handle part 1 and having a gripping jaw 5. The adjustable jaw of the wrench has a groove 6 transversely thereacross which is dove-tailed on one side and receives a separate insert plate 7 of hardened steel having a serrated or other gripping face. against lateral movement in the groove 6 and firmly anchored on the bed of the groove 6 by means of a dowel pin 8 formed of a round pin having grooves 9 in opposite sides to form a dove-tail. Registering grooves 10 and 11 are formed in the jaw 5 and plate 7 longitudinally thereof, the groove 11 in the insert being dove-tail in cross section and the groove 10 in the body of the jaw being part cylindrical. This latter groove is more than a semi-circle in cross section and the cylindrical portion of the dowel pin is more than a semi-circle in cross section, so that the dowel is held in the body of the jaw against lateral movement and holds the plate 7 bedded in the groove in the jaw, the shoulders 12 formed by the grooves in the dowel lying flat or parallel with the bed The insert is firmly locked of the groove. The dowel pin passes through a hole 13 in front of the jaw forming one side of the transverse groove 6 for the insert and into a hole 14 in the wall forming the other side of the groove. An insert plate thus fixed is very firmly combined with the gripping jaw or working face of the tool and will not be displaced laterally in the groove or in any direction by heavy duty.
Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:
1. A wrench having gripping jaws, a groove transversely from side to side across the width of a jaw, a separate gripping plate mounted in the groove with the front and rear edges of said plate lying against the sides of the groove, a dowel pin receiving groove in the bottom of said plate receiving groove which runs longitudinally of the jaw and at right angles to said groove passing transversely across the jaw and is part circular in cross section with its centre on the outer side of the mouth of the dowel pin receiving groove, circular holes in the jaw at the side walls of the first mentioned groove and co-axial with said dowel pin receiving groove, a dove-tailed groove in the bottom of said gripping plate and in register with said dowel pin receiving groove and a dowel pin having notches in each side to form a dove-tail longitudinal projection and a part cylindrical portion of more than a half-circle in circumference so that the dowel pin is constrained to have axial movement only in the said dowel engaging grooves and thereby locks the gripping plate bedded on the bottom of said plate engaging groove, the dowel pin also engaging in said circular holes in each side of said plate engaging groove.
2. A wrench having gripping jaws, a groove transversely from side to side across the width of a jaw, a separate gripping plate mounted in the groove with the front and rear edges of said plate lying against the sides of the groove, a dowel pin receiving groove in the bottom of said plate receiving groove which runs longitudinally of the jaw and at right angles to said groove passing transversely across the jaw and is part circular in cross section, circular holes in the jaw at the side walls of the first mentioned groove and co-axial with said dowel pin receiving groove, a dove-tailed groove in the bottom of said gripping plate and in register with said dowel pin receiving groove and a dowel pin having notches in each side to form a dove-tail longitudinal projection and a part cylindrical portion of more than a half-circle in circumference so that the dowel pin is constrained to have axial movement only in the said dowel engaging grooves and thereby locks the gripping plate bedded on the bottom of said plate engaging groove, the dowel pin also engaging in said circular holes in each side of said plate engaging groove.
References Cited in the file of this patent
US531975A 1955-09-01 1955-09-01 Jaw face attaching means for wrench jaw constructions Expired - Lifetime US2777348A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US531975A US2777348A (en) 1955-09-01 1955-09-01 Jaw face attaching means for wrench jaw constructions

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US531975A US2777348A (en) 1955-09-01 1955-09-01 Jaw face attaching means for wrench jaw constructions

Publications (1)

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US2777348A true US2777348A (en) 1957-01-15

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021149A (en) * 1959-09-10 1962-02-13 Alvin G Griffin Gripping jaws for materials testing machines
US3370490A (en) * 1966-08-05 1968-02-27 Marshall H. Feldman Adjustable wrench
US3515139A (en) * 1966-08-29 1970-06-02 Codman & Shurtleff Atraumatic clamp
US3903764A (en) * 1973-11-14 1975-09-09 Alfred Frederick Andersen Minimum stressed wrench
US5074171A (en) * 1990-10-29 1991-12-24 Snap-On Tools Corporation Open-end wrench with reduced size jaws
US5117714A (en) * 1989-10-16 1992-06-02 Snap-On Tools Corporation One-piece, open-end wrenching head with serrated jaws
US8516931B2 (en) 2010-01-12 2013-08-27 Milwaukee Electric Tool Corporation Pliers including removable jaws
US20160176025A1 (en) * 2014-12-18 2016-06-23 Troy Houston Pipe wrench having changeable engaging surface

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US573806A (en) * 1896-12-22 Wrench
US589668A (en) * 1897-09-07 Wrench
US634216A (en) * 1898-02-15 1899-10-03 J A Kramer Wrench.
US1270848A (en) * 1917-10-04 1918-07-02 William T Long Wrench.
US1360176A (en) * 1920-06-23 1920-11-23 James H A Carr Wrench

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US573806A (en) * 1896-12-22 Wrench
US589668A (en) * 1897-09-07 Wrench
US634216A (en) * 1898-02-15 1899-10-03 J A Kramer Wrench.
US1270848A (en) * 1917-10-04 1918-07-02 William T Long Wrench.
US1360176A (en) * 1920-06-23 1920-11-23 James H A Carr Wrench

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021149A (en) * 1959-09-10 1962-02-13 Alvin G Griffin Gripping jaws for materials testing machines
US3370490A (en) * 1966-08-05 1968-02-27 Marshall H. Feldman Adjustable wrench
US3515139A (en) * 1966-08-29 1970-06-02 Codman & Shurtleff Atraumatic clamp
US3903764A (en) * 1973-11-14 1975-09-09 Alfred Frederick Andersen Minimum stressed wrench
US5117714A (en) * 1989-10-16 1992-06-02 Snap-On Tools Corporation One-piece, open-end wrenching head with serrated jaws
US5074171A (en) * 1990-10-29 1991-12-24 Snap-On Tools Corporation Open-end wrench with reduced size jaws
US8516931B2 (en) 2010-01-12 2013-08-27 Milwaukee Electric Tool Corporation Pliers including removable jaws
US8677866B2 (en) 2010-01-12 2014-03-25 Milwaukee Electric Tool Corporation Pliers including removable jaws
US20160176025A1 (en) * 2014-12-18 2016-06-23 Troy Houston Pipe wrench having changeable engaging surface

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