GB872911A - Improvements in or relating to manually operated wrenches - Google Patents
Improvements in or relating to manually operated wrenchesInfo
- Publication number
- GB872911A GB872911A GB1318460A GB1318460A GB872911A GB 872911 A GB872911 A GB 872911A GB 1318460 A GB1318460 A GB 1318460A GB 1318460 A GB1318460 A GB 1318460A GB 872911 A GB872911 A GB 872911A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pawl
- pin
- spring
- cavity
- rotatable 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.)
- Expired
Links
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
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
- B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
872,911. Wrenches. HARE, T. G. April 13, 1960, No. 13184/60. Class 61. A reversible ratchet wrench comprises a rotatable member 14 journalled in a cylindrical opening 13 in the head 12, the opening 13 having a wedge shaped cavity 16 in which a wedge shaped pawl 19 is spring biased to move in a radial direction towards the member 14 and has an arcuate saw of teeth along one edge engageable with ratchet teeth 15 on the member 14, the pawl being shiftable in the cavity circumferentially of the rotatable member 14 in opposite directions as limited by engagement of the side walls of the pawl by the side walls of the cavity 16. As shown, a coil spring 26 is positioned between the pawl 19 and a pin 23 rotatably mounted in the body of the wrench. The pin has a handle 35 by which it may be rotated from a first to a second position, to shift the axis of the spring and with it the pawl, between one side and the other of a line extending between the pin and the axis of rotation of the rotatable member. The pin is locked in one or other position by a spring pressed ball 32 and detent means. The cylindrical member 14 has an axial projection 50 which provides a disconnectable connection for socket wrenches or the like. A cap 39 having a tab 40, and an annular wall 44 having a tab 45 are sealed to the head to provide oil seals. In a modification, Figs. 9-12 (not shown), the movement of the pawl is guided by an upwardly extending pin attached to the foremost end of the spring, the pin being adapted to move in a V-shaped slot in the body. In another modification, Figs. 13, 14 (not shown), an endless coil spring is provided of greater outer diameter than that of a circumferential groove in the circular rotatable member in which it is positioned. A portion of the spring extending between the pawl and the cavity moves the pawl radially outwards during the shifting of the pawl from one position to the other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1318460A GB872911A (en) | 1960-04-13 | 1960-04-13 | Improvements in or relating to manually operated wrenches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1318460A GB872911A (en) | 1960-04-13 | 1960-04-13 | Improvements in or relating to manually operated wrenches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB872911A true GB872911A (en) | 1961-07-12 |
Family
ID=10018370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1318460A Expired GB872911A (en) | 1960-04-13 | 1960-04-13 | Improvements in or relating to manually operated wrenches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB872911A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327058A (en) * | 1997-07-10 | 1999-01-13 | Frank Mccann | Ratchet wrench |
EP1084797A1 (en) * | 1999-07-30 | 2001-03-21 | Hand Tool Design Corporation | Reversible ratcheting tool with gear wheel/pawl engagement |
EP1086783A1 (en) * | 1999-08-05 | 2001-03-28 | Hand Tool Design Corporation | Ratcheting tool with improved gear wheel/pawl engagement |
-
1960
- 1960-04-13 GB GB1318460A patent/GB872911A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327058A (en) * | 1997-07-10 | 1999-01-13 | Frank Mccann | Ratchet wrench |
GB2327058B (en) * | 1997-07-10 | 1999-05-26 | Frank Mccann | Control mechanism for ratchet wrench |
EP1084797A1 (en) * | 1999-07-30 | 2001-03-21 | Hand Tool Design Corporation | Reversible ratcheting tool with gear wheel/pawl engagement |
EP1086783A1 (en) * | 1999-08-05 | 2001-03-28 | Hand Tool Design Corporation | Ratcheting tool with improved gear wheel/pawl engagement |
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