GB2050899A - Spanner - Google Patents

Spanner Download PDF

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Publication number
GB2050899A
GB2050899A GB7921561A GB7921561A GB2050899A GB 2050899 A GB2050899 A GB 2050899A GB 7921561 A GB7921561 A GB 7921561A GB 7921561 A GB7921561 A GB 7921561A GB 2050899 A GB2050899 A GB 2050899A
Authority
GB
United Kingdom
Prior art keywords
leg
spanner
handle
internal
legs
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.)
Granted
Application number
GB7921561A
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GB2050899B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Postle G A
Original Assignee
Postle G A
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Postle G A filed Critical Postle G A
Priority to GB7921561A priority Critical patent/GB2050899B/en
Publication of GB2050899A publication Critical patent/GB2050899A/en
Application granted granted Critical
Publication of GB2050899B publication Critical patent/GB2050899B/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F1/00Combination or multi-purpose hand tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00Spanners; Wrenches
    • B25B13/48Spanners; Wrenches for special purposes
    • B25B13/481Spanners; Wrenches for special purposes for operating in areas having limited access

Abstract

A spanner has a handle 1 to each end of which a leg 8, 9 is pivoted. One leg 8 has a respective free end region formed with a square cross-section part 10 with an end bore 11, and the other end 9 has its end region provided with opposed slots 12. Leg 8 is suitable for use as a radiator plug and valve tail spanner or key, and leg 9 as a spanner for valve tails with internal lugs and for internal hexagonal tails. Both legs can be rotated through more than 90 DEG to each side of the axis of the handle 1. <IMAGE>

Description

SPECIFICATION Tools for insertion into shaped sockets This invention relates to improvements in tools for insertion into shaped sockets, e.g. in the plugs of radiator tail valves and the like.
British Patent Specification 1326010 describes an adaption of a so-called "Allen Key" wherein the extremities of a bent hexagonal bar are formed by pressing or forging which square sections ends for insertion into square apertures.
It has been found in practice that a key of this nature can cause damage to the interior of a radiator if it is allowed to penetrate too far, and also problems of access and use of the tool are caused if used in a constructed space, such as the clearance between a radiator and another part such as the structure supporting the radiator or wall or confined space.
According to this invention, an internal spanner comprises a straight handle, and two legs one pivotably connected to each end of the handle, the free end region of one leg presenting a polygonal cross-sectioned end part suitable for use as an internal engagement tool.
The free end of other leg may be formed with opposed slots extending some way axially of the leg.
Such a tool is suitable for use as a valve spanner for hexagonal holes, the slots fitting over a valve tail with internal lugs.
Preferably, the face of the squared free end of the saidone leg is provided with a blind bore centrally thereof in order to accommodate the end of a protruberent valve needle, without damage thereto.
A preferred embodiment of internal spanner according to the invention will now be described by way of example, with reference to the accompanying drawing, which is a perspective view of the preferred embodiment.
An internal spanner according to this invention, as shown in the drawing comprises a handle 1, cast, forged or machined to a cylindrical or round-bar configuration. At each end, the handle is provided with a part 2, 3 of increased diameter, each with a respective slot 4,5 in which is received a tongue 6,7 of a respective leg 8, 9.
Each leg 8,9 is of hexagonal cross-section, but the free end part 10 of leg 8 is forged into a square-cross sectioned configuration, and is thus suitable for use as a radiator spanner, while its end has a blind bore 11 which can accommodate a valve pin such as is provided in some designs of radiatortail or vent plugs.
The other leg 9 has a pair of opposed slots 12 in opposed parallel faces of the hexagonal crosssectioned leg. These slots penetrate into the metal for about 3 mm. are 4 mm. wide, and 12 mm. long, extending parallel to the axis of the leg 9, and the tail of the slot is sloped. This leg 9 with its slots 12 can be used as a valve key for use with valve tails with internal lugs, the lugs fitting into the slots 12.
The legs 8,9 are pivotally fastened by means of their tongues, 6,7 in the slots 4,5 by pivot pins 13, 14.
The internal spanner described and illustrated is capable of use with radiator plugs, and with internal ly finned valves. Because the legs 8,9 are pivoted to the handle, either leg can be used where clearance is restricted, and the handles orientation to either leg adjusted freely during manipulation, in contradistinction to the known Allen Key, or the internal spanner described in British Specification 1326010, both of which being bent bars, have a fixed angle between the leg or tool in use and the handle.
The legs can both be rotated through more than 90 to each side of handle 1, so that when one leg is in use the other can form an extension to the handle, either leg can be posed perpendicularly to the axis of the handle, and both legs can be arranged parallel pointing to the same or opposite sides of the handle.
1. An internal spanner comprising a straight handle and two legs, one pivotally connected to each end of the handle, the free end region of one leg presenting a polygonal sectioned end part suitable for use as an internal engagement tool, and the other leg being provided with a different tool.
2. A spanner according to claim 1 wherein said other leg has its free end as opposed longitudinally extending slots.
3. A spanner according to claims 1 or 2 wherein said one leg has an axial bore in an end face thereof.
4. A spanner according to any preceeding claim wherein the free end region of said one leg has a square cross-section.
5. A spanner according to any preceding claim wherein at least one of the legs is movable to a position at right angles to the handle.
6. A spanner according to claim 5 wherein both legs are so moveable, between and beyond a normal position on both sides of the handle.
7. A spanner according to any preceding claim where the legs are alignable with the handle, so that the leg not in use forms an extension of the handle.
8. An internal spanner substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
New claims or amendments to claims filed on 22nd November, 1979 CLAIMS 1. An internal spanner comprising a straight handle and two legs, one pivotally connected to each end of the handle, the free end region of a first leg presenting a square sectioned end part suitable for use as an internal engagement tool, and the other leg having opposed longitudinal slots formed in its sides and extending from its free end.
2. A spanner according to claim 1 wherein said first leg has an axial bore in an end face thereof.
3. A spanner according to any preceding claim wherein the free end region of said first leg has a square cross-section.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (3)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Tools for insertion into shaped sockets This invention relates to improvements in tools for insertion into shaped sockets, e.g. in the plugs of radiator tail valves and the like. British Patent Specification 1326010 describes an adaption of a so-called "Allen Key" wherein the extremities of a bent hexagonal bar are formed by pressing or forging which square sections ends for insertion into square apertures. It has been found in practice that a key of this nature can cause damage to the interior of a radiator if it is allowed to penetrate too far, and also problems of access and use of the tool are caused if used in a constructed space, such as the clearance between a radiator and another part such as the structure supporting the radiator or wall or confined space. According to this invention, an internal spanner comprises a straight handle, and two legs one pivotably connected to each end of the handle, the free end region of one leg presenting a polygonal cross-sectioned end part suitable for use as an internal engagement tool. The free end of other leg may be formed with opposed slots extending some way axially of the leg. Such a tool is suitable for use as a valve spanner for hexagonal holes, the slots fitting over a valve tail with internal lugs. Preferably, the face of the squared free end of the saidone leg is provided with a blind bore centrally thereof in order to accommodate the end of a protruberent valve needle, without damage thereto. A preferred embodiment of internal spanner according to the invention will now be described by way of example, with reference to the accompanying drawing, which is a perspective view of the preferred embodiment. An internal spanner according to this invention, as shown in the drawing comprises a handle 1, cast, forged or machined to a cylindrical or round-bar configuration. At each end, the handle is provided with a part 2, 3 of increased diameter, each with a respective slot 4,5 in which is received a tongue 6,7 of a respective leg 8, 9. Each leg 8,9 is of hexagonal cross-section, but the free end part 10 of leg 8 is forged into a square-cross sectioned configuration, and is thus suitable for use as a radiator spanner, while its end has a blind bore 11 which can accommodate a valve pin such as is provided in some designs of radiatortail or vent plugs. The other leg 9 has a pair of opposed slots 12 in opposed parallel faces of the hexagonal crosssectioned leg. These slots penetrate into the metal for about 3 mm. are 4 mm. wide, and 12 mm. long, extending parallel to the axis of the leg 9, and the tail of the slot is sloped. This leg 9 with its slots 12 can be used as a valve key for use with valve tails with internal lugs, the lugs fitting into the slots 12. The legs 8,9 are pivotally fastened by means of their tongues, 6,7 in the slots 4,5 by pivot pins 13, 14. The internal spanner described and illustrated is capable of use with radiator plugs, and with internal ly finned valves. Because the legs 8,9 are pivoted to the handle, either leg can be used where clearance is restricted, and the handles orientation to either leg adjusted freely during manipulation, in contradistinction to the known Allen Key, or the internal spanner described in British Specification 1326010, both of which being bent bars, have a fixed angle between the leg or tool in use and the handle. The legs can both be rotated through more than 90 to each side of handle 1, so that when one leg is in use the other can form an extension to the handle, either leg can be posed perpendicularly to the axis of the handle, and both legs can be arranged parallel pointing to the same or opposite sides of the handle. CLAIMS
1. An internal spanner comprising a straight handle and two legs, one pivotally connected to each end of the handle, the free end region of one leg presenting a polygonal sectioned end part suitable for use as an internal engagement tool, and the other leg being provided with a different tool.
2. A spanner according to claim 1 wherein said other leg has its free end as opposed longitudinally extending slots.
3. A spanner according to any preceding claim wherein the free end region of said first leg has a square cross-section.
3. A spanner according to claims 1 or 2 wherein said one leg has an axial bore in an end face thereof.
4. A spanner according to any preceeding claim wherein the free end region of said one leg has a square cross-section.
5. A spanner according to any preceding claim wherein at least one of the legs is movable to a position at right angles to the handle.
6. A spanner according to claim 5 wherein both legs are so moveable, between and beyond a normal position on both sides of the handle.
7. A spanner according to any preceding claim where the legs are alignable with the handle, so that the leg not in use forms an extension of the handle.
8. An internal spanner substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
New claims or amendments to claims filed on 22nd November, 1979 CLAIMS 1. An internal spanner comprising a straight handle and two legs, one pivotally connected to each end of the handle, the free end region of a first leg presenting a square sectioned end part suitable for use as an internal engagement tool, and the other leg having opposed longitudinal slots formed in its sides and extending from its free end.
2. A spanner according to claim 1 wherein said first leg has an axial bore in an end face thereof.
GB7921561A 1979-06-20 1979-06-20 Spanner Expired GB2050899B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7921561A GB2050899B (en) 1979-06-20 1979-06-20 Spanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7921561A GB2050899B (en) 1979-06-20 1979-06-20 Spanner

Publications (2)

Publication Number Publication Date
GB2050899A true GB2050899A (en) 1981-01-14
GB2050899B GB2050899B (en) 1983-02-16

Family

ID=10505988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7921561A Expired GB2050899B (en) 1979-06-20 1979-06-20 Spanner

Country Status (1)

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GB (1) GB2050899B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794328A (en) * 1983-04-13 1988-12-27 Niagara Mohawk Power Corporation Tool for mounting a sensor module on a live power transmission line
EP0533455A1 (en) * 1991-09-17 1993-03-24 BLUE CIRCLE HEATING LIMITED (formerly MYSON GROUP PLC) Heat radiators
US5396820A (en) * 1993-01-15 1995-03-14 Baker; David R. Open end wrench with removable handle
US5421180A (en) * 1992-10-06 1995-06-06 Batesville Casket Company, Inc. Casket locking crank collapsible into compact configuration
US6314844B1 (en) * 2000-04-04 2001-11-13 Mark Warner Uni-hex key wrench
US6340163B1 (en) * 2000-11-28 2002-01-22 Brady John Newman Snag-resistant chuck key
US6443039B1 (en) * 2000-04-04 2002-09-03 Mark Warner Wrenches having two driving stems pivotally connected with each other
US7044034B2 (en) * 2004-06-02 2006-05-16 Chih-Ching Hsien Slide stop device of a hexagonal spanner
US8037788B2 (en) * 2008-07-24 2011-10-18 Dionex Corporation Tight-spot fitting and driver, and method of use thereof
US8448545B1 (en) 2010-03-03 2013-05-28 Douglas B. Argyle Bender bar speedwrench 4-in-1 multi-tool

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794328A (en) * 1983-04-13 1988-12-27 Niagara Mohawk Power Corporation Tool for mounting a sensor module on a live power transmission line
EP0533455A1 (en) * 1991-09-17 1993-03-24 BLUE CIRCLE HEATING LIMITED (formerly MYSON GROUP PLC) Heat radiators
US5421180A (en) * 1992-10-06 1995-06-06 Batesville Casket Company, Inc. Casket locking crank collapsible into compact configuration
US5396820A (en) * 1993-01-15 1995-03-14 Baker; David R. Open end wrench with removable handle
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
US6340163B1 (en) * 2000-11-28 2002-01-22 Brady John Newman Snag-resistant chuck key
US7044034B2 (en) * 2004-06-02 2006-05-16 Chih-Ching Hsien Slide stop device of a hexagonal spanner
US8037788B2 (en) * 2008-07-24 2011-10-18 Dionex Corporation Tight-spot fitting and driver, and method of use thereof
US8448545B1 (en) 2010-03-03 2013-05-28 Douglas B. Argyle Bender bar speedwrench 4-in-1 multi-tool

Also Published As

Publication number Publication date
GB2050899B (en) 1983-02-16

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PCNP Patent ceased through non-payment of renewal fee