US2951405A - Multiple grip wrench - Google Patents

Multiple grip wrench Download PDF

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Publication number
US2951405A
US2951405A US776565A US77656558A US2951405A US 2951405 A US2951405 A US 2951405A US 776565 A US776565 A US 776565A US 77656558 A US77656558 A US 77656558A US 2951405 A US2951405 A US 2951405A
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US
United States
Prior art keywords
gripping
fork
gripping members
shank
wrench
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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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US776565A
Inventor
Engquist Arne
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SNA Europe Industries AB
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Bahco AB
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Publication date
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Publication of US2951405A publication Critical patent/US2951405A/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
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/008—Allen-type keys

Definitions

  • the present invention relates to an improvement in wrenches of the type comprising a shank one or both ends of which are forked and which carries two or more pivotally mounted gripping members between the arms of each fork.
  • Such gripping members may consi-st of solid studs of polygonal (such as hexagonal) circumference to tighten bolts or screws Ahaving a correspondingly recessed head or to tighten screws with usual heads by the aid of a socket fitted over the gripping stud.
  • the gripping members may also be formed as sockets with a polygonal inner wall so that screws with usual polygonal heads may be tightened Without the use of a separate socket.
  • the gripping members may' also be formed as screw-drivers, e.g. as screw-drivers of the type adapted to tighten screws the head of which have a cross-shaped recess.
  • the shank end is to a certain extent weakened, so that the fork arms are subjected to severe breaking stresses in spite of the fact that they are connected by a bolt for the pivotal mounting of the gripping members.
  • the orifice defined by the fork arms is formed in each fork with a width decreasing by steps towards the inner end of the oriiice and the length of the gripping members are so chosen in accordance therewith that a gripping member can iill completely a portion of the oriiice when another gripping member is in its operative position.
  • the gripping member situated in the perennial will largely relieve the fork arms of stresses.
  • Figures l and 2 illustrate one embodiment in two different elevations.
  • Figure 3 is a detail view showing two gripping studs rigidly joined to each other.
  • Figure 4 is a cross-section taken along line IV--IV in Figure 2.
  • Figure 5 illustrates a second embodiment in elevation.
  • Figure 6 is a cross-section taken along line VI--VI in Figure 5.
  • the numeral 1 designates the shank of the wrench and 2 and 3 are its two forked ends.
  • 4 and 5 are the fork arms yand 6 and 7 the oriiices deiined by the fork arms.
  • the studs in each pair are at right angles to each other and the mounting member 12 or 13 is provided with a bore for a bolt 14 extending through the fork arms.
  • each stud is so dimensioned relatively to its fork oriiice that when sit- Patented Sept.
  • FIG. 5 and 6 differs from that described above only in that the two gripping studs 16 and 17 at each end of the wrench 1 are independently pivoted.
  • the mounting member 1S of the stud 16 is forked, while the mounting member 19 of the other stud 17 is inserted between the arms of the forked mounting member 18.
  • a frictional washer 20 is inserted between the outer side of the mounting member 18 and one fork arm 5 and another frictional washer 21 is inserted between the mounting member 19 and the inner side of the mounting member 1S.
  • a wrench comprising, in Combination, a shank having at least one bifurcated end defining a pair of spaced fork arms, a rigidly connected right angularly disposed pair of gripping members of different widths and lengths pivoted between the fork arms of said bifurcated end of said shank, the wider gripping member having the shorter length, pivot means supporting said gripping members between said fork arms for rotation about an axis v extending perpendicular to the longitudinal axis of said shank, the distance between said fork arms decreasing by steps longitudinally inwardly of said shank to dene a plurality of longitudinally' stepped sections, each one of said stepped 4sections corresponding to the size and shape of one of said gripping members and slidably receiving said respective gripping members therewithin in torque transmitting relationship between said shank and each of said gripping members of the set.
  • a wrench as set forth in claim l wherein torque is transmitted to a gripping member from said shank through the other one of said gripping members.

Description

Sept 6, 1960 A. ENGQUlsT 2,951,405
MULTIPLE GRIP WRENCH Filed NOV. 26, 1958 A/l/iA/ro l HRM/s' Arda u/.fr
a* MM2/'IM United States Patent O MULTIPLE GRIP WRENCH Arne Engqust, Enkoping, Sweden, assignor to Aktebolaget Bahco, Stockholm, Sweden, a corporation of Weden Filed Nov. 26, 1958, Ser. No. 776,565
Claims priority, application Sweden Dec. 9, 1957 3 Claims. (Cl. 81-53) The present invention relates to an improvement in wrenches of the type comprising a shank one or both ends of which are forked and which carries two or more pivotally mounted gripping members between the arms of each fork. Such gripping members may consi-st of solid studs of polygonal (such as hexagonal) circumference to tighten bolts or screws Ahaving a correspondingly recessed head or to tighten screws with usual heads by the aid of a socket fitted over the gripping stud. The gripping members may also be formed as sockets with a polygonal inner wall so that screws with usual polygonal heads may be tightened Without the use of a separate socket. The gripping members may' also be formed as screw-drivers, e.g. as screw-drivers of the type adapted to tighten screws the head of which have a cross-shaped recess.
Due to the forked structure the shank end is to a certain extent weakened, so that the fork arms are subjected to severe breaking stresses in spite of the fact that they are connected by a bolt for the pivotal mounting of the gripping members. To reduce such stresses'the orifice defined by the fork arms is formed in each fork with a width decreasing by steps towards the inner end of the oriiice and the length of the gripping members are so chosen in accordance therewith that a gripping member can iill completely a portion of the oriiice when another gripping member is in its operative position. Thereby, the gripping member situated in the orice will largely relieve the fork arms of stresses.
The invention will be described in detail below with reference to the embodiments shown on the accompanying drawing where the gripping members are shown as gripping studs of hexagonal cross-section.
Figures l and 2 illustrate one embodiment in two different elevations.
Figure 3 is a detail view showing two gripping studs rigidly joined to each other.
Figure 4 is a cross-section taken along line IV--IV in Figure 2.
Figure 5 illustrates a second embodiment in elevation.
Figure 6 is a cross-section taken along line VI--VI in Figure 5.
Referring to Figures 1-4, the numeral 1 designates the shank of the wrench and 2 and 3 are its two forked ends. 4 and 5 are the fork arms yand 6 and 7 the oriiices deiined by the fork arms. In this embodiment there are two gripping studs 8, 9 and 10, 11, respectively, in each shank end, the two studs in each pair being formed integrally with a mounting member 12 and 13 respectively. The studs in each pair are at right angles to each other and the mounting member 12 or 13 is provided with a bore for a bolt 14 extending through the fork arms. As seen in Figures 1 and 2, each stud is so dimensioned relatively to its fork oriiice that when sit- Patented Sept. 6, 1960 ICC uated in said oriiice it forms a supporting body, which when the other gripping stud is in its operative position takes up part of the load and relieves the arms of breaking stresses or at least gives the breaking stresses a smaller lever arm. It has been found inadequate to rely entirely on the bolt 14 since it cannot be given a reliable size without giving the fork arms an otherwise unnecessarily large width. To achieve this strengthening action independent of the width of the gripping stud located in the fork orifice, a narrower gripping stud is formed longer than a wider one and the fork oriiice is formed with a width correspondingly decreasing by steps toward its inner ends so that each stud will always fill completely a longitudinal section of the fork orifice. As shown in Figure 4, a friction washer 15 is inserted bctween the mounting member 12 or 13 and one fork arm, so that the gripping studs will not be swung unintentionally from one to the other position.
The embodiment of Figures 5 and 6 differs from that described above only in that the two gripping studs 16 and 17 at each end of the wrench 1 are independently pivoted. The mounting member 1S of the stud 16 is forked, while the mounting member 19 of the other stud 17 is inserted between the arms of the forked mounting member 18. Furthermore, a frictional washer 20 is inserted between the outer side of the mounting member 18 and one fork arm 5 and another frictional washer 21 is inserted between the mounting member 19 and the inner side of the mounting member 1S.
The invention is not limited to the embodiments shown and described which are capable of many variations and modifications without departing from the scope and spirit of the invention.
I claim:
1. A wrench comprising, in Combination, a shank having at least one bifurcated end defining a pair of spaced fork arms, a rigidly connected right angularly disposed pair of gripping members of different widths and lengths pivoted between the fork arms of said bifurcated end of said shank, the wider gripping member having the shorter length, pivot means supporting said gripping members between said fork arms for rotation about an axis v extending perpendicular to the longitudinal axis of said shank, the distance between said fork arms decreasing by steps longitudinally inwardly of said shank to dene a plurality of longitudinally' stepped sections, each one of said stepped 4sections corresponding to the size and shape of one of said gripping members and slidably receiving said respective gripping members therewithin in torque transmitting relationship between said shank and each of said gripping members of the set.
2. A wrench as set forth in claim l, wherein torque is transmitted to a gripping member from said shank through the other one of said gripping members.
3. A wrench as in claim 1 in which said gripping members vare independently pivoted.
References Cited in the iile of this patent UNITED STATES PATENTS 770,574 Halstead et al Sept, 20, 1904 1,115,215 Kuhns Oct. 27, 1914 1,168,204 Helstrom Ian. 1l, 1916 1,702,148 Breseman Feb. 12, 1929 2,834,237 Renoux May 13, 1958 FOREIGN PATENTS 496,001 Italy June 30, 1954 1,015,282 France July 2, 1952
US776565A 1957-12-09 1958-11-26 Multiple grip wrench Expired - Lifetime US2951405A (en)

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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124983A (en) * 1964-03-17 Hand wrench with cable and spool drive means
US3516661A (en) * 1968-03-15 1970-06-23 Ben Hansen Cranking action exercising bar
US3635104A (en) * 1969-06-18 1972-01-18 Eugene D Taylor Apparatus for rotating valves on gas cylinders
US3774480A (en) * 1969-06-18 1973-11-27 E Taylor Apparatus for rotating valves on gas cylinders
US4028968A (en) * 1975-12-24 1977-06-14 Deamicis Ferdinando Distributor adjustment tool
US4606247A (en) * 1985-09-16 1986-08-19 Professional Business Management Associates Versatile chained tool set
US4699030A (en) * 1986-08-18 1987-10-13 Yang Tai Her Spinoff wrenches
DE3734016A1 (en) * 1987-10-08 1989-04-27 Holland Letz Felo Werkzeug POCKET SCREWDRIVER WITH BITS MAGAZINE AND CLIP
US5218891A (en) * 1990-11-13 1993-06-15 Snap-On Tools Corporation Double-ended reversible box wrench with 71/2 degree swing clearance
US5421180A (en) * 1992-10-06 1995-06-06 Batesville Casket Company, Inc. Casket locking crank collapsible into compact configuration
US5904077A (en) * 1995-03-07 1999-05-18 Wright Tool Company Double-ended flex handle wrench
US5996448A (en) * 1996-12-20 1999-12-07 Daido Corporation Socket wrench
US6109147A (en) * 1998-12-08 2000-08-29 Lkl Innovations, Ltd. Hexagonal tool bit set
US6279430B1 (en) * 2000-04-28 2001-08-28 Chih-Ching Hsieh F-type socket wrench
US6314844B1 (en) * 2000-04-04 2001-11-13 Mark Warner Uni-hex key wrench
WO2002027195A2 (en) * 2000-09-28 2002-04-04 Tore Boman Wrench with an open socket pivotally connected to an u-shaped handle
US20020108473A1 (en) * 2000-08-28 2002-08-15 Warner Mark S. Wrenches having two driving stems pivotally connected with each other
US6443039B1 (en) * 2000-04-04 2002-09-03 Mark Warner Wrenches having two driving stems pivotally connected with each other
US6637299B1 (en) * 2001-09-19 2003-10-28 Brian R. Steele Wrench with rotating heads
US20040129119A1 (en) * 2003-01-03 2004-07-08 Clarke Gary Richard Multiple purpose tool
US20050126350A1 (en) * 2003-12-16 2005-06-16 Private Brand Tools (Australia) Pty Ltd Impact wrench
US7043949B2 (en) * 2002-07-17 2006-05-16 & Son, Inc. Child proof key for barrel-housed gun lock
US20060150783A1 (en) * 2005-01-10 2006-07-13 Thompson David A Multiple purpose, multiple use tool used for installing/servicing toilets and in particular two piece toilets
US20110017024A1 (en) * 2009-11-12 2011-01-27 Meridian International Co., Ltd. Rotary ratchet wrench
US20110197714A1 (en) * 2010-02-15 2011-08-18 David Meholovitch Multi-wrench apparatus and method of use
US20110197718A1 (en) * 2010-02-15 2011-08-18 David Meholovitch Multi-wrench apparatus and method of use
US20120036967A1 (en) * 2010-08-15 2012-02-16 Jung-Chou Hsu Ratchet wrench having rotatably attached sockets
US8474353B1 (en) * 2010-11-08 2013-07-02 Timothy Michael Thoman Manual dual end rotary driver of Z configuration
US9114509B2 (en) 2012-02-14 2015-08-25 Meridian International Co., Ltd. Rotary ratcheting wrench
US9446506B2 (en) 2013-04-19 2016-09-20 Walter R. Tucker Enterprises, Ltd. Tool having dual flex heads
USD839700S1 (en) * 2016-12-30 2019-02-05 Yeng Ping Wong T-Shaped bar
USD956498S1 (en) 2021-07-28 2022-07-05 Carl Fausett Wrench extension apparatus
USD1011168S1 (en) * 2021-11-23 2024-01-16 Jcool Co., Ltd. Torque tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US770574A (en) * 1904-09-20 Ments
US1115215A (en) * 1913-10-10 1914-10-27 J E Washington Jr Tongs.
US1168204A (en) * 1913-11-03 1916-01-11 John Helstrom Wrench.
US1702148A (en) * 1928-01-24 1929-02-12 Roy J Breseman Wrench
FR1015282A (en) * 1950-03-29 1952-09-15 Wrench
US2834237A (en) * 1957-02-27 1958-05-13 Kenneth L Renoux Angularly adjustable, multiple-socket wrench

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US770574A (en) * 1904-09-20 Ments
US1115215A (en) * 1913-10-10 1914-10-27 J E Washington Jr Tongs.
US1168204A (en) * 1913-11-03 1916-01-11 John Helstrom Wrench.
US1702148A (en) * 1928-01-24 1929-02-12 Roy J Breseman Wrench
FR1015282A (en) * 1950-03-29 1952-09-15 Wrench
US2834237A (en) * 1957-02-27 1958-05-13 Kenneth L Renoux Angularly adjustable, multiple-socket wrench

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124983A (en) * 1964-03-17 Hand wrench with cable and spool drive means
US3516661A (en) * 1968-03-15 1970-06-23 Ben Hansen Cranking action exercising bar
US3635104A (en) * 1969-06-18 1972-01-18 Eugene D Taylor Apparatus for rotating valves on gas cylinders
US3774480A (en) * 1969-06-18 1973-11-27 E Taylor Apparatus for rotating valves on gas cylinders
US4028968A (en) * 1975-12-24 1977-06-14 Deamicis Ferdinando Distributor adjustment tool
US4606247A (en) * 1985-09-16 1986-08-19 Professional Business Management Associates Versatile chained tool set
AU573090B2 (en) * 1985-09-16 1988-05-26 Hogan, S.H. Set of tools linked to form a chain
US4699030A (en) * 1986-08-18 1987-10-13 Yang Tai Her Spinoff wrenches
DE3734016A1 (en) * 1987-10-08 1989-04-27 Holland Letz Felo Werkzeug POCKET SCREWDRIVER WITH BITS MAGAZINE AND CLIP
US5218891A (en) * 1990-11-13 1993-06-15 Snap-On Tools Corporation Double-ended reversible box wrench with 71/2 degree swing clearance
US5421180A (en) * 1992-10-06 1995-06-06 Batesville Casket Company, Inc. Casket locking crank collapsible into compact configuration
US5904077A (en) * 1995-03-07 1999-05-18 Wright Tool Company Double-ended flex handle wrench
US5996448A (en) * 1996-12-20 1999-12-07 Daido Corporation Socket wrench
US6109147A (en) * 1998-12-08 2000-08-29 Lkl Innovations, Ltd. Hexagonal tool bit set
US6314844B1 (en) * 2000-04-04 2001-11-13 Mark Warner Uni-hex key wrench
US6443039B1 (en) * 2000-04-04 2002-09-03 Mark Warner Wrenches having two driving stems pivotally connected with each other
US6279430B1 (en) * 2000-04-28 2001-08-28 Chih-Ching Hsieh F-type socket wrench
US20020108473A1 (en) * 2000-08-28 2002-08-15 Warner Mark S. Wrenches having two driving stems pivotally connected with each other
US6688196B2 (en) * 2000-08-28 2004-02-10 Mark S. Warner Wrenches having two driving stems pivotally connected with each other
WO2002027195A2 (en) * 2000-09-28 2002-04-04 Tore Boman Wrench with an open socket pivotally connected to an u-shaped handle
WO2002027195A3 (en) * 2000-09-28 2002-06-20 Tore Boman Wrench with an open socket pivotally connected to an u-shaped handle
US6637299B1 (en) * 2001-09-19 2003-10-28 Brian R. Steele Wrench with rotating heads
US7043949B2 (en) * 2002-07-17 2006-05-16 & Son, Inc. Child proof key for barrel-housed gun lock
US20040129119A1 (en) * 2003-01-03 2004-07-08 Clarke Gary Richard Multiple purpose tool
US6922864B2 (en) * 2003-01-03 2005-08-02 Gary Richard Clarke Multiple purpose tool
US20050126350A1 (en) * 2003-12-16 2005-06-16 Private Brand Tools (Australia) Pty Ltd Impact wrench
US7051628B2 (en) * 2003-12-16 2006-05-30 Private Brand Tools (Australia) Pty Ltd Impact wrench
US20060150783A1 (en) * 2005-01-10 2006-07-13 Thompson David A Multiple purpose, multiple use tool used for installing/servicing toilets and in particular two piece toilets
US8794110B2 (en) 2009-11-12 2014-08-05 Meridian International Co., Ltd. Rotary ratchet wrench
US8069753B2 (en) 2009-11-12 2011-12-06 Meridian International Co., Ltd. Rotary ratchet wrench
US20110017024A1 (en) * 2009-11-12 2011-01-27 Meridian International Co., Ltd. Rotary ratchet wrench
US20110197714A1 (en) * 2010-02-15 2011-08-18 David Meholovitch Multi-wrench apparatus and method of use
US20110197718A1 (en) * 2010-02-15 2011-08-18 David Meholovitch Multi-wrench apparatus and method of use
US20120036967A1 (en) * 2010-08-15 2012-02-16 Jung-Chou Hsu Ratchet wrench having rotatably attached sockets
US8474353B1 (en) * 2010-11-08 2013-07-02 Timothy Michael Thoman Manual dual end rotary driver of Z configuration
US9114509B2 (en) 2012-02-14 2015-08-25 Meridian International Co., Ltd. Rotary ratcheting wrench
US9446506B2 (en) 2013-04-19 2016-09-20 Walter R. Tucker Enterprises, Ltd. Tool having dual flex heads
USD839700S1 (en) * 2016-12-30 2019-02-05 Yeng Ping Wong T-Shaped bar
USD956498S1 (en) 2021-07-28 2022-07-05 Carl Fausett Wrench extension apparatus
USD1011168S1 (en) * 2021-11-23 2024-01-16 Jcool Co., Ltd. Torque tool

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