EP0388007A1 - A Hand Tool - Google Patents
A Hand Tool Download PDFInfo
- Publication number
- EP0388007A1 EP0388007A1 EP90301479A EP90301479A EP0388007A1 EP 0388007 A1 EP0388007 A1 EP 0388007A1 EP 90301479 A EP90301479 A EP 90301479A EP 90301479 A EP90301479 A EP 90301479A EP 0388007 A1 EP0388007 A1 EP 0388007A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- working head
- hand tool
- elongate member
- tool
- tubular member
- 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.)
- Withdrawn
Links
Images
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
- 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
- B25B15/007—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with blade of flat or substantially flat cross-section
-
- 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
Definitions
- the present invention relates to a hand tool.
- the present invention relates to a hand tool of the screwdriver or chisel type.
- screwdrivers are required to cater for different sizes of screws and also different sizes of chisel are required to complete different jobs.
- the provision of a range of sizes of screwdrivers and/or chisels is expensive and also cumbersome for both storage and if all of the tools have to be carried to different work locations.
- This problem has previously been noted, especially with regard to screwdrivers, the solution being to provide a single handle to which any one of a number of different size screwdriver heads can be simply detachably attached. However such relatively small screwdriver heads can be easily mislaid or lost.
- the aim of the present invention is to provide a versatile hand tool of the screwdriver or chisel type, which obviates the possibility of loss of the working head.
- a hand tool comprising a handle to which a working head is attatched, the working head having a number of radially projecting tool heads and being rotatable to any one of a number of positions and lockable in any selected position.
- the tool has a handle which is secured to one end region of an elongate, square section, hollow tubular member, a working head being mounted at the other end region of the tubular member, for rotation about an axis transverse to the longitudinal axis of said tubular member.
- the working head has four different screwdriver tool heads projecting like spokes of a wheel normally relative to said rotational axis and at right angles to each other. Thus the working head may be rotated to a position where a selected screwdriver tool head is projecting along the longitudinal axis of the tubular member, away from the handle.
- a further elongate, square cross-section, tubular member is axially slidably located within said tubular member.
- This further tubular member can be axially moved within said tubular member to engage part of the working head and lock the working head in the selected rotational position.
- a lateral projection may extend from the further tubular member through an axially extending elongate slot in the said hollow tubular member.
- said elongate tubular member is preferably spring biased to the locked position so that it is retracted against the spring only when the working head has to be rotated to select an alternative tool head for use.
- Alternative locking means may of course be substituted.
- a screwdriver comprising a handle 1 which is secured to one end region of an elongate, square cross-section, hollow tubular member 3.
- a working head 5 is mounted at the other end region of the tubular member 3, for rotation about an axis 4 which is transverse to the longitudinal axis of said tubular member 3.
- the working head 5 is generally cross-shaped with four different screwdriver tool heads 7 projecting normally to the said rotational axis, one from each of the four end faces 9 of the arms 10 of generally cross-shaped working head 5.
- the working head 5 can be rotated to a position where a selected screwdriver tool head 7 is projecting along the longitudinal axis of the tubular member 3, away from the handle 1.
- a further elongate, square cross-section, tubular member 11 is axially slidably located within said tubular member 3 and is biassed by a spring 13 against part an arm 10 of the working head 5.
- said further tubular member 11 can be manually moved by sliding a lateral projection 15 of said further tubular member 11 along a slot 17 in the wall of said tubular member 3, against the force of spring 13.
- Alternative means can of course be substituted for holding the working head 3 in a selected rotational position.
- a U-shaped member 19 see Fig.
- a bolt 21 can be mounted on a bolt 21 together with a spring 23, the bolt 21 forming the rotational axle for a generally cuboid working head 5.
- the bolt 21 has a knurled head 25 so that it can be easily rotated manually.
- the bolt 21 can be tightened to compress spring 23 and move U-shaped member 19 into engagement around the cuboid working head 5, the working head 5 being thus locked in the selected rotational position.
- the spring 23 moves the U-shaped member 19 out of engagement with the working head 5 and allows the working head to be rotated to another desired position.
- the present invention thus provides a hand tool which has a number of different tool heads, any one of which can be selected and all of which are not detachable and therfore cannot be mislaid.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present specification discloses a hand tool such as a screwdriver or chisel. Such tools are required in different sizes for different jobs, requiring the handyman to purchase a number of different tools to cover all eventualities.
The present invention overcomes the above problem by providing a hand tool comprising a handle (1) to which a working head (5) is attached, the working head (5) having a number of radially projecting tool heads (7), which tool heads (7) can be of different sizes and type, as desired. The working head (5) is rotatable to any one of a number of positions and lockable in any selected position so that the selected tool head (7) is an axial extension of the handle (1) and available for use.
Description
- The present invention relates to a hand tool.
- In particular the present invention relates to a hand tool of the screwdriver or chisel type. As will be appreciated different size screwdrivers are required to cater for different sizes of screws and also different sizes of chisel are required to complete different jobs. The provision of a range of sizes of screwdrivers and/or chisels is expensive and also cumbersome for both storage and if all of the tools have to be carried to different work locations. This problem has previously been noted, especially with regard to screwdrivers, the solution being to provide a single handle to which any one of a number of different size screwdriver heads can be simply detachably attached. However such relatively small screwdriver heads can be easily mislaid or lost.
- The aim of the present invention is to provide a versatile hand tool of the screwdriver or chisel type, which obviates the possibility of loss of the working head.
- According to the present invention there is provided a hand tool comprising a handle to which a working head is attatched, the working head having a number of radially projecting tool heads and being rotatable to any one of a number of positions and lockable in any selected position.
- The present invention will hereinafter be described, for the sake of simplicity, solely with reference to a screwdriver. However it must be appreciated that the present invention is equally applicable to a chisel or any other hand tool of similar type.
- In a prefered embodiment of the present invention the tool has a handle which is secured to one end region of an elongate, square section, hollow tubular member, a working head being mounted at the other end region of the tubular member, for rotation about an axis transverse to the longitudinal axis of said tubular member. The working head has four different screwdriver tool heads projecting like spokes of a wheel normally relative to said rotational axis and at right angles to each other. Thus the working head may be rotated to a position where a selected screwdriver tool head is projecting along the longitudinal axis of the tubular member, away from the handle. To lock the working head in the selected position and enable the tool to be used, a further elongate, square cross-section, tubular member is axially slidably located within said tubular member. This further tubular member can be axially moved within said tubular member to engage part of the working head and lock the working head in the selected rotational position. To facilitate movement of the further tubular member, a lateral projection may extend from the further tubular member through an axially extending elongate slot in the said hollow tubular member. Further, said elongate tubular member is preferably spring biased to the locked position so that it is retracted against the spring only when the working head has to be rotated to select an alternative tool head for use. Alternative locking means may of course be substituted.
- The present invention will now be further described, by way of example, with reference to the accompanying drawings, in which:-
- Fig.1 is a partially cutaway view of a preferred embodiment of the present invention;
- Fig.2 is a partially cutaway view of part of the embodiment of Fig.1, taken at right angles to Fig. 1; and
- Fig. 3 is an exploded view of an alternative locking arrangement for the working head.
- The preferred embodiment of the present invention illustrated in the acccompanying drawings is a screwdriver comprising a handle 1 which is secured to one end region of an elongate, square cross-section, hollow
tubular member 3. A workinghead 5 is mounted at the other end region of thetubular member 3, for rotation about an axis 4 which is transverse to the longitudinal axis of saidtubular member 3. The workinghead 5 is generally cross-shaped with four differentscrewdriver tool heads 7 projecting normally to the said rotational axis, one from each of the four end faces 9 of the arms 10 of generally cross-shaped workinghead 5. Thus the workinghead 5 can be rotated to a position where a selectedscrewdriver tool head 7 is projecting along the longitudinal axis of thetubular member 3, away from the handle 1. - To lock the working
head 5 in a selected rotational position and enable the tool to be used, a further elongate, square cross-section,tubular member 11 is axially slidably located within saidtubular member 3 and is biassed by aspring 13 against part an arm 10 of the workinghead 5. To release the workinghead 5 so that it can be rotated to select anothertool head 7, said furthertubular member 11 can be manually moved by sliding alateral projection 15 of said furthertubular member 11 along aslot 17 in the wall of saidtubular member 3, against the force ofspring 13. Alternative means can of course be substituted for holding the workinghead 3 in a selected rotational position. For example, a U-shaped member 19 (see Fig. 3) can be mounted on abolt 21 together with aspring 23, thebolt 21 forming the rotational axle for a generallycuboid working head 5. Thebolt 21 has aknurled head 25 so that it can be easily rotated manually. Thus thebolt 21 can be tightened to compressspring 23 and move U-shapedmember 19 into engagement around thecuboid working head 5, the workinghead 5 being thus locked in the selected rotational position. By slackening thebolt 21 thespring 23 moves the U-shapedmember 19 out of engagement with the workinghead 5 and allows the working head to be rotated to another desired position. - As previously mentioned, whilst the above refers to a screwdriver, the present invention is equally applicable to other hand tools of similar type, e.g. a chisel.
- The present invention thus provides a hand tool which has a number of different tool heads, any one of which can be selected and all of which are not detachable and therfore cannot be mislaid.
Claims (8)
1. A hand tool comprising a handle (1) to which a working head (5) is attached, characterised in that the working head (5) has a number of radially projecting tool heads (7) and is rotatable to any one of a number of positions and lockable in any selected position.
2. A hand tool as claimed in claim 1, in which the handle (1) is secured to one end region of an elongate member (3), the working head (5) being mounted at the other end region of the elongate member (3) for rotation about an axis (4) transverse to the longitudinal axis of said elongate member (3).
3. A hand tool as claimed in claim 2, in which the working head (5) has four different screwdriver tool heads (7) projecting like spokes of a wheel normally relative to the rotational axis (4), with adjacent tool heads (7) being at right angles to each other.
4. A hand tool as claimed in claim 2 or 3, in which a further elongate member (11) is slidable along said elongate member (3) to engage part of the working head (5) and lock the working head (5) in the selected rotational position.
5. A hand tool as claimed in claim 2, in which the elongate member (3) is a hollow tubular member, with a further elongate tubular member (11) being axially slidable therein to engage the working head (5) and thus lock the working head (5) in a selected rotational position.
6. A hand tool as claimed in claim 5, in which the further elongate member (11) has a lateral projection (15) which extends through an axially extending elongate slot (17) in the said hollow tubular member (3), to facilitate movement of the further elongate member (11) relative to said hollow tubular member (3).
7. A hand tool as claimed in any one of claims 4 to 6, in which a spring (13) biasses the said elongate member (3) and the further elongate mbmer (11) to a relative position wherein the working head (5) is locked in a selected rotational position.
8. A hand tool as claimed in any one of claims 4 to 7, in which a screw threaded means (21,25) is provided for securing the working head (5) in a selected rotational position.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8903127 | 1989-02-11 | ||
GB898903127A GB8903127D0 (en) | 1989-02-11 | 1989-02-11 | Hand tool |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0388007A1 true EP0388007A1 (en) | 1990-09-19 |
Family
ID=10651550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90301479A Withdrawn EP0388007A1 (en) | 1989-02-11 | 1990-02-12 | A Hand Tool |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0388007A1 (en) |
GB (1) | GB8903127D0 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9411520U1 (en) * | 1994-07-15 | 1995-11-16 | wolfcraft GmbH, 56745 Weibern | Bit screwdriver |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US687871A (en) * | 1901-09-26 | 1901-12-03 | Nicholas Geib | Compound tool. |
US750182A (en) * | 1904-01-19 | of philadelphia | ||
GB297584A (en) * | 1927-10-18 | 1928-09-27 | Otto Altenbach | Improvements in and relating to knife handles |
-
1989
- 1989-02-11 GB GB898903127A patent/GB8903127D0/en active Pending
-
1990
- 1990-02-12 EP EP90301479A patent/EP0388007A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US750182A (en) * | 1904-01-19 | of philadelphia | ||
US687871A (en) * | 1901-09-26 | 1901-12-03 | Nicholas Geib | Compound tool. |
GB297584A (en) * | 1927-10-18 | 1928-09-27 | Otto Altenbach | Improvements in and relating to knife handles |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9411520U1 (en) * | 1994-07-15 | 1995-11-16 | wolfcraft GmbH, 56745 Weibern | Bit screwdriver |
Also Published As
Publication number | Publication date |
---|---|
GB8903127D0 (en) | 1989-03-30 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
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RBV | Designated contracting states (corrected) |
Designated state(s): BE DE ES FR GB IT |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19910320 |