CA2334439C - Tool-bit magazine for hand tool - Google Patents
Tool-bit magazine for hand tool Download PDFInfo
- Publication number
- CA2334439C CA2334439C CA002334439A CA2334439A CA2334439C CA 2334439 C CA2334439 C CA 2334439C CA 002334439 A CA002334439 A CA 002334439A CA 2334439 A CA2334439 A CA 2334439A CA 2334439 C CA2334439 C CA 2334439C
- Authority
- CA
- Canada
- Prior art keywords
- tool
- sleeve
- handle
- shaft
- bit
- 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.)
- Expired - Fee Related
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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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/16—Handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION 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
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
- B25F5/029—Construction of casings, bodies or handles with storage compartments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25G—HANDLES FOR HAND IMPLEMENTS
- B25G1/00—Handle constructions
- B25G1/08—Handle constructions with provision for storing tool elements
- B25G1/085—Handle constructions with provision for storing tool elements for screwdrivers, wrenches or spanners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H3/00—Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments
- B25H3/003—Holders for drill bits or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
A sleeve is rotated to a position in which an aperture is in register with a tool-bit receiving recess in a body rotatably mounted on the shaft of a hand tool such as a screwdriver, so that a tool-bit can be removed from or inserted into that recess in a direction transverse to the axis of the shaft. The sleeve surrounds a rear end portion of the body so as to prevent escape of tool-bits from the recesses while leaving the tool-bits partly visible.
Description
CAP79238 Docunnent#; 653129 TOOL-BIT MA-GAZTNE FOIt HAND TOOL
Field of Invention This invention relates to screwdrivers and other hand tools which may have replaceable tool-bits.
Descrirtion of Prior art A large variety of fastening screws of various sizes, with different head types, e.g. slotted, Phillips, and Posidriv, axe in use nowadays. These require a corresponding variety of screwdrivers or screwdriver bits. Bits may be selected from a storage unit and transferred to the chuck of a hand tool such as a cordless motorized screwdriver_ The user has to remember to return the bits to the storage unit. It is inconvenient to use a succession of different bits at a location remote from the storage un.iit.
There are a large inumber of multi-bit screwdrivers on the market. Many of these store the bits loosely in a compartment in the handle, in which the bits may rattle noisily_ In order to locate a particular bit it is usually necessary to removal all the bits from the compartrnent and to sort through them. Othex multi-bit screwdrivers have the bits attached releasably to the front of the handle, in which case they are easily dislodged inadvertently.
SU1v1MAFtY OF THE INVENTION
The present invention provides a tool-bit magazine for a hand tool, having a body and a sleeve which are relatively rotatable to a position in which an aperture in the sleeve is in register with a recess in the body and thereby petmits a tool-bit to be removed from or inserted into that recess.
la According to one aspect of the invention there is provided a hand tool comprising:
a handle;
a shaft extending from a front end of the handle;
a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being' open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle, and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and at a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction.
According to a further aspect of the invention there is provided a hand tool comprising:
a handle;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body having a plurality of elongate recesses for accommodating respective tool-bits, the recesses being spaced around the longitudinal axis of the shaft and lb extending generally in an axial direction, the recesses being open at the periphery of a body;
a sleeve which is mounted on the body, the sleeve surrounding a rear end portion of the body so as to prevent escape of the tool-bits from the recesses, while leaving the tool-bits partly visible at front end portions of the recesses the sleeve having an aperture open at a periphery and at a front end of the sleeve, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction; and a spring-loaded element mounted on the body and cooperating with a circumferential series of notches in the sleeve to locate the sleeve in respective positions in which the aperture is in register with respective recesses.
According to yet another aspect of the invention there is provided a hand tool comprising:
a handle having a solid core;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle; and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be lc selectively removed from and inserted into that recess in a direction transverse to the axial direction.
According to yet another aspect of the invention there is provided a hand tool comprising:
a handle;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle; and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and at a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction, wherein each of the elongate recesses include at least one resiliently deformable member, said member being deformed by the tool-bit when inserted into the elongate recess, thereby to prevent rattling of the tool bit.
According to still another aspect of the present invention there is provided a hand tool comprising:
a handle having a solid core;
ld a shaft connected with said handle and having a front end adapted to mount a replaceable tool-bit;
a plurality of tool bits; and a magazine having a plurality of recesses that carry said plurality of said tool-bits, said magazine being separate from the handle and being rotatable relative to the handle to a tool-bit releasing position to enable a selected one of said tool-bits carried thereby to be released therefrom.
Field of Invention This invention relates to screwdrivers and other hand tools which may have replaceable tool-bits.
Descrirtion of Prior art A large variety of fastening screws of various sizes, with different head types, e.g. slotted, Phillips, and Posidriv, axe in use nowadays. These require a corresponding variety of screwdrivers or screwdriver bits. Bits may be selected from a storage unit and transferred to the chuck of a hand tool such as a cordless motorized screwdriver_ The user has to remember to return the bits to the storage unit. It is inconvenient to use a succession of different bits at a location remote from the storage un.iit.
There are a large inumber of multi-bit screwdrivers on the market. Many of these store the bits loosely in a compartment in the handle, in which the bits may rattle noisily_ In order to locate a particular bit it is usually necessary to removal all the bits from the compartrnent and to sort through them. Othex multi-bit screwdrivers have the bits attached releasably to the front of the handle, in which case they are easily dislodged inadvertently.
SU1v1MAFtY OF THE INVENTION
The present invention provides a tool-bit magazine for a hand tool, having a body and a sleeve which are relatively rotatable to a position in which an aperture in the sleeve is in register with a recess in the body and thereby petmits a tool-bit to be removed from or inserted into that recess.
la According to one aspect of the invention there is provided a hand tool comprising:
a handle;
a shaft extending from a front end of the handle;
a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being' open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle, and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and at a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction.
According to a further aspect of the invention there is provided a hand tool comprising:
a handle;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body having a plurality of elongate recesses for accommodating respective tool-bits, the recesses being spaced around the longitudinal axis of the shaft and lb extending generally in an axial direction, the recesses being open at the periphery of a body;
a sleeve which is mounted on the body, the sleeve surrounding a rear end portion of the body so as to prevent escape of the tool-bits from the recesses, while leaving the tool-bits partly visible at front end portions of the recesses the sleeve having an aperture open at a periphery and at a front end of the sleeve, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction; and a spring-loaded element mounted on the body and cooperating with a circumferential series of notches in the sleeve to locate the sleeve in respective positions in which the aperture is in register with respective recesses.
According to yet another aspect of the invention there is provided a hand tool comprising:
a handle having a solid core;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle; and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be lc selectively removed from and inserted into that recess in a direction transverse to the axial direction.
According to yet another aspect of the invention there is provided a hand tool comprising:
a handle;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle; and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and at a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction, wherein each of the elongate recesses include at least one resiliently deformable member, said member being deformed by the tool-bit when inserted into the elongate recess, thereby to prevent rattling of the tool bit.
According to still another aspect of the present invention there is provided a hand tool comprising:
a handle having a solid core;
ld a shaft connected with said handle and having a front end adapted to mount a replaceable tool-bit;
a plurality of tool bits; and a magazine having a plurality of recesses that carry said plurality of said tool-bits, said magazine being separate from the handle and being rotatable relative to the handle to a tool-bit releasing position to enable a selected one of said tool-bits carried thereby to be released therefrom.
BRTEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a side: view of a multi-bit screwdriver incorporatittg a tool-bit magazine;
Figures 2a and 2b are axial sections through the magazine;
Figure 3 is a cross-section through the magazine;
Figure 4 is a sidE: view of a preferred embodiment of the screwdriver;
Figure 5 is an axial section through the screwdriver of Figure 4; and Figure 6 is a cross-section tbtough a ratchet mechanism in the screwdriver of Figure 4.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The screwdriver has a steel bar or shaft 1 which extends from one end of a composite plastics handle 2 having a hard polypropylene core. The bar is press formed with two longitudinal ribs (not visilble) which retain the shaft 1 in the handle after the shaft has been, pressed into the handle. The distal end of the shaft has a hexagonal recess 3 for receiving tkie hexagotaal stub of a conventional tool-bit. A
permanent magnet 4 is fixed in the base of the hexagonal recess 3 in order to retain the bit in use.
A tool-bit magazine 6 is mounted on the proxitnal end of the shaft 1. It has a body 7 with peripheral elongate recesses 8 for accommodating tool bits 9, one of which is visible in Figure 1. 7"he recesses 8 are spaced around the common axis 11 of the shaft 1 and the body 7 and they extend generaIly in the axial direction.
The body 7 has an axial bore 12 which is a sliding fxt on the shaft 1. A
radially inwardly projecting poaton 13 of the body 7 engages in a circumferential groove 14 machined in the shaft 1, in order to retain the body 7 on the shaft 1. A bevel 13a on the inside edge of the proje:cting portion 13 allows the body 7 to be pushed on to the shaft 1.
The rear end surface 16 of the body abuts against the front end surface 17 of the handle.
The front end of each recess 8 is defined by a wall surface 8a sloping outwards away from the other end, which is open and wkuich is covered by the front end surface 17 of the handle.
Figure 1 is a side: view of a multi-bit screwdriver incorporatittg a tool-bit magazine;
Figures 2a and 2b are axial sections through the magazine;
Figure 3 is a cross-section through the magazine;
Figure 4 is a sidE: view of a preferred embodiment of the screwdriver;
Figure 5 is an axial section through the screwdriver of Figure 4; and Figure 6 is a cross-section tbtough a ratchet mechanism in the screwdriver of Figure 4.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The screwdriver has a steel bar or shaft 1 which extends from one end of a composite plastics handle 2 having a hard polypropylene core. The bar is press formed with two longitudinal ribs (not visilble) which retain the shaft 1 in the handle after the shaft has been, pressed into the handle. The distal end of the shaft has a hexagonal recess 3 for receiving tkie hexagotaal stub of a conventional tool-bit. A
permanent magnet 4 is fixed in the base of the hexagonal recess 3 in order to retain the bit in use.
A tool-bit magazine 6 is mounted on the proxitnal end of the shaft 1. It has a body 7 with peripheral elongate recesses 8 for accommodating tool bits 9, one of which is visible in Figure 1. 7"he recesses 8 are spaced around the common axis 11 of the shaft 1 and the body 7 and they extend generaIly in the axial direction.
The body 7 has an axial bore 12 which is a sliding fxt on the shaft 1. A
radially inwardly projecting poaton 13 of the body 7 engages in a circumferential groove 14 machined in the shaft 1, in order to retain the body 7 on the shaft 1. A bevel 13a on the inside edge of the proje:cting portion 13 allows the body 7 to be pushed on to the shaft 1.
The rear end surface 16 of the body abuts against the front end surface 17 of the handle.
The front end of each recess 8 is defined by a wall surface 8a sloping outwards away from the other end, which is open and wkuich is covered by the front end surface 17 of the handle.
A sleeve 18 prevents escape of the bits 9 from the recesses 8. The sleeve 18 is mounted in a circumferential recess 19 in the body 7 so as to be rotatable to respective positions in which an aperture constituted by an open-ended slot 21 in the sleeve 18 is in register with a respective one of the recesses 8, thereby permitting a bit 9 to be inserted into that recess or removed from that recess (by allowing it to fall out under gravity)_ Si ce both the body 7 and the sleeve 18 are rotatable relative to the rest of the tool, it is necessary to hold one of'them with one band while the other hand rotates the other of them. For facilitate this, the body 7 and the sleeve 18 are provided with external ribs 7a and 18a respectively. Since the whole magazine 6 is rotatable, the shaft I can be guided finnly by one hand while the other baand rotates the handle 2, without any risk of the sleeve 18 being tuQned independently of the body 7 and inadvertently fireeing-the bits during use of the screwdriver.
As can be seen fiom Figure 1 particularly, the sleeve 18 only covers about half of the length of the recesses 8, with the result that the front ends of the bits 9 are visible so that they can be easily identified and selected. The rear end of the bit 9 rests against the front end surface 17 of the handle 2 and its tip rests against the sloping surface 8a.
Rattling of the bits 9 in the recess 8 is prevented by flaAges 22 which are foma,ed integral with the body 7 and which are resiliently deformed by the bits 9 so that the bits are retained between the flanges 22 and the sleeve 18. As shown in Figure 3, the hexagonal stub of the bit 9 is able to adopt dif#erent angular positions, two of which are indicated in solid Iine and chain line respectively.
In order to enable the sleeve 18 to be indexed and located in the respective positions in which the slot 21 registers with the respective recesses 8, a spring loaded ball 23 mounted in a radial bore in the body 7 cooperates with a circumferential series of part-spherical notches 24 in the sleseve 18.
Various modifications may be made within the scope of the invention. For example, a reversible ratchet mechanism for transmitting rotation from the handle 2 to the shaft 1 may be interposed between the magazine 6 and the handle 2.
As can be seen fiom Figure 1 particularly, the sleeve 18 only covers about half of the length of the recesses 8, with the result that the front ends of the bits 9 are visible so that they can be easily identified and selected. The rear end of the bit 9 rests against the front end surface 17 of the handle 2 and its tip rests against the sloping surface 8a.
Rattling of the bits 9 in the recess 8 is prevented by flaAges 22 which are foma,ed integral with the body 7 and which are resiliently deformed by the bits 9 so that the bits are retained between the flanges 22 and the sleeve 18. As shown in Figure 3, the hexagonal stub of the bit 9 is able to adopt dif#erent angular positions, two of which are indicated in solid Iine and chain line respectively.
In order to enable the sleeve 18 to be indexed and located in the respective positions in which the slot 21 registers with the respective recesses 8, a spring loaded ball 23 mounted in a radial bore in the body 7 cooperates with a circumferential series of part-spherical notches 24 in the sleseve 18.
Various modifications may be made within the scope of the invention. For example, a reversible ratchet mechanism for transmitting rotation from the handle 2 to the shaft 1 may be interposed between the magazine 6 and the handle 2.
Figures 4 to 6 show a prefeired embodiment of the screwdriver, in which parts similar to those described above are given the same reference numerals. The screwdriver has a tool-bit nniagazine 6 with a body 7 having recesses 8 accommodating tool bits 9. The body 7 has an axial bore which is a sliding fit on the shaft 1. A portion 13 of the body 7 engages in a circumferential groove 14 machined in the shafft 1. A
sleeve 18 is mounted in a circumferential rccess 19 in the body 7 so as to be rotatable to respective positions in which a slot 21 is in register with a respective recess 8, to perniit insertion or removal of a bit 9. A spring loaded bal123 mounted on the body 7 engages in a circumferential series of notches in the sleeve I S.
The screwdriver shown in Figures 4 to 6 also has a ratchet mechanism 51 between the magazine 6 and the handle 2. The ratchet mechanism has a body 62 with a bore 56 receiving the shaft I which is formed with a spur gear 57 engageable by pawls 58a and 58b which are tiltable about axes parallel to the shaft axis 11. A
control sleeve 64 is linked to a control member 66 carrying a leaf spring 76 with legs 76a and 76b which bear on the pawls 58a and 58b respectively. The control sleeve 64 is movable clockwise and anticlockwise from the intermediate position shown in Figure 6, in which both pawls 58a and 58b and engaged with the gear 57, to respective ratcheting positions in which only one or the other of the pawis is engaged with the gear 57_ 'I'he rear end surface 16 of the magazine body 7 abuts against the front surface of the body 62, against which the rear ends of the bits 9 rest. The tips of the bits 9 rest against sloping front end surfaces 8a of the recesses 8.
The ratchet mechanism 51 is described in more de'tail in our published U.K.
Patent Application No. 2340199 entitled "Ratchet Mechanism " filed 3 August 1998 and published 16 February 2000,
sleeve 18 is mounted in a circumferential rccess 19 in the body 7 so as to be rotatable to respective positions in which a slot 21 is in register with a respective recess 8, to perniit insertion or removal of a bit 9. A spring loaded bal123 mounted on the body 7 engages in a circumferential series of notches in the sleeve I S.
The screwdriver shown in Figures 4 to 6 also has a ratchet mechanism 51 between the magazine 6 and the handle 2. The ratchet mechanism has a body 62 with a bore 56 receiving the shaft I which is formed with a spur gear 57 engageable by pawls 58a and 58b which are tiltable about axes parallel to the shaft axis 11. A
control sleeve 64 is linked to a control member 66 carrying a leaf spring 76 with legs 76a and 76b which bear on the pawls 58a and 58b respectively. The control sleeve 64 is movable clockwise and anticlockwise from the intermediate position shown in Figure 6, in which both pawls 58a and 58b and engaged with the gear 57, to respective ratcheting positions in which only one or the other of the pawis is engaged with the gear 57_ 'I'he rear end surface 16 of the magazine body 7 abuts against the front surface of the body 62, against which the rear ends of the bits 9 rest. The tips of the bits 9 rest against sloping front end surfaces 8a of the recesses 8.
The ratchet mechanism 51 is described in more de'tail in our published U.K.
Patent Application No. 2340199 entitled "Ratchet Mechanism " filed 3 August 1998 and published 16 February 2000,
Claims (20)
1. A hand tool comprising:
a handle;
a shaft extending from a front end of the handle;
a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle, and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and at a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction.
a handle;
a shaft extending from a front end of the handle;
a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle, and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and at a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction.
2. A hand tool as claimed in claim 1, in which the front end of each elongate recess remote from the handle is defined by a wall surface which slopes outwards and forwards.
3. A hand tool as claimed in claim 1 or 2, in which the magazine is rotatable relative to the shaft and the handle.
4. A hand tool as claimed in any one of claims 1 to 3, including indexing means for locating the sleeve in respective positions in which the aperture is in register with respective elongate recesses.
5. A hand tool as claimed in any one of claims 1 to 4, in which the body has a radially inwardly projecting part engaging in a groove in the shaft.
6. A hand tool as claimed in claim 5, wherein the groove is a circumferential groove.
7. A hand tool as claimed in any one of claims 1 to 6, including at least one resiliently deformable member in each elongate recess, said member being deformed by the tool-bit when inserted into the elongate recess, thereby to prevent rattling of the tool-bit.
8. A hand tool as claimed in claim 7, in which said member is a flange integral with the body.
9. A hand tool comprising:
a handle;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body having a plurality of elongate recesses for accommodating respective tool-bits, the recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the recesses being open at the periphery of a body;
a sleeve which is mounted on the body, the sleeve surrounding a rear end portion of the body so as to prevent escape of the tool-bits from the recesses, while leaving the tool-bits partly visible at front end portions of the recesses, the sleeve having an aperture open at a periphery and at a front end of the sleeve, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction; and a spring-loaded element mounted on the body and cooperating with a circumferential series of notches in the sleeve to locate the sleeve in respective positions in which the aperture is in register with respective recesses.
a handle;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body having a plurality of elongate recesses for accommodating respective tool-bits, the recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the recesses being open at the periphery of a body;
a sleeve which is mounted on the body, the sleeve surrounding a rear end portion of the body so as to prevent escape of the tool-bits from the recesses, while leaving the tool-bits partly visible at front end portions of the recesses, the sleeve having an aperture open at a periphery and at a front end of the sleeve, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction; and a spring-loaded element mounted on the body and cooperating with a circumferential series of notches in the sleeve to locate the sleeve in respective positions in which the aperture is in register with respective recesses.
10. A hand tool comprising:
a handle having a solid core;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle; and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction.
a handle having a solid core;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle; and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction.
11. A hand tool as claimed in claim 10, in which the front end of each elongate recess remote from the handle is defined by a wall surface which slopes outwards and forwards.
12. A hand tool as claimed in claim 10 or 11, in which the magazine is rotatable relative to the shaft and the handle.
13. A hand tool as claimed in any one of claims 10 to 12, including indexing means for locating the sleeve in respective positions in which the aperture is in register with respective elongate recesses.
14. A hand tool as claimed in claim 13, in which the indexing means comprises a spring-loaded element mounted on the body and cooperating with a circumferential series of notches in the sleeve.
15. A hand tool as claimed in any one of claims 10 to 14, including at least one resiliently deformable member in each elongate recess, said member being deformed by the tool-bit when inserted into the elongate recess, thereby to prevent rattling of the tool-bit.
16. A hand tool as claimed in claim 15, in which said member is a flange integral with the body.
17. A hand tool as claimed in any one of claims 9 to 16, in which the body has a radially inwardly projecting part engaging in a groove in the shaft.
18. A hand tool as claimed in claim 17, wherein the groove is a circumferential groove.
19. A hand tool comprising:
a handle;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle; and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and at a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction, wherein each of the elongate recesses include at least one resiliently deformable member, said member being deformed by the tool-bit when inserted into the elongate recess, thereby to prevent rattling of the tool bit.
a handle;
a shaft extending from a front end of the handle, a front end portion of the shaft being adapted to mount a replaceable tool-bit; and a tool-bit magazine mounted on a rear end portion of the shaft, the magazine comprising:
a body which is separate from the handle and through which the shaft extends, the body having a plurality of elongate recesses for accommodating respective tool-bits, the elongate recesses being spaced around the longitudinal axis of the shaft and extending generally in an axial direction, the elongate recesses being open at a periphery of the body, a rear end portion of the body having a peripheral recess which is open toward the handle; and a sleeve which is mounted on the body and extends into the peripheral recess, the sleeve surrounding the rear end portion of the body and overlapping the elongate recesses so as to prevent escape of the tool-bits from the elongate recesses while leaving the tool-bits partly visible at front end portions of the elongate recesses remote from the handle, the sleeve having an aperture open at a periphery and at a front end of the sleeve remote from the handle, the sleeve being rotatable relative to the body to a position in which the aperture in the sleeve is in register with one of the elongate recesses and thereby permits a tool-bit to be selectively removed from and inserted into that recess in a direction transverse to the axial direction, wherein each of the elongate recesses include at least one resiliently deformable member, said member being deformed by the tool-bit when inserted into the elongate recess, thereby to prevent rattling of the tool bit.
20. A hand tool comprising:
a handle having a solid core;
a shaft connected with said handle and having a front end adapted to mount a replaceable tool-bit;
a plurality of tool-bits;
a magazine having a plurality of recesses that carry said plurality of said tool-bits; and a sleeve, rotatably mounted in a circumferential recess in the magazine, said magazine being separate from the handle and being rotatable relative to the handle and the sleeve to a tool-bit releasing position to enable a selected one of said tool-bits carried thereby to be released therefrom.
a handle having a solid core;
a shaft connected with said handle and having a front end adapted to mount a replaceable tool-bit;
a plurality of tool-bits;
a magazine having a plurality of recesses that carry said plurality of said tool-bits; and a sleeve, rotatably mounted in a circumferential recess in the magazine, said magazine being separate from the handle and being rotatable relative to the handle and the sleeve to a tool-bit releasing position to enable a selected one of said tool-bits carried thereby to be released therefrom.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9816876A GB2340059A (en) | 1998-08-03 | 1998-08-03 | Tool bit magazine |
| TW087121730A TW388733B (en) | 1998-08-03 | 1998-12-28 | Tool-bit magazine |
| EP99305452A EP0978356B1 (en) | 1998-08-03 | 1999-07-08 | Tool-bit magazine for hand tool |
| CN99111881.2A CN1251795A (en) | 1998-08-03 | 1999-08-03 | Tips container for hand tools |
| CA002334439A CA2334439C (en) | 1999-07-08 | 2001-02-07 | Tool-bit magazine for hand tool |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99305452A EP0978356B1 (en) | 1998-08-03 | 1999-07-08 | Tool-bit magazine for hand tool |
| CA002334439A CA2334439C (en) | 1999-07-08 | 2001-02-07 | Tool-bit magazine for hand tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2334439A1 CA2334439A1 (en) | 2002-08-07 |
| CA2334439C true CA2334439C (en) | 2009-04-21 |
Family
ID=25682382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002334439A Expired - Fee Related CA2334439C (en) | 1998-08-03 | 2001-02-07 | Tool-bit magazine for hand tool |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2334439C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015164946A1 (en) * | 2014-05-01 | 2015-11-05 | Gerard Grand | Multi-bit tool with bi-directional ratchet mechanism |
-
2001
- 2001-02-07 CA CA002334439A patent/CA2334439C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2334439A1 (en) | 2002-08-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20170207 |