GB786227A - Improvements in or relating to ratchet wrenches - Google Patents
Improvements in or relating to ratchet wrenchesInfo
- Publication number
- GB786227A GB786227A GB2347955A GB2347955A GB786227A GB 786227 A GB786227 A GB 786227A GB 2347955 A GB2347955 A GB 2347955A GB 2347955 A GB2347955 A GB 2347955A GB 786227 A GB786227 A GB 786227A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nut
- head
- corners
- spring
- roller
- 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
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
786,227. Screwing-up and unscrewing nuts and bolts. ARO EQUIPMENT CORPORATION. Aug. 15, 1955, No. 23479/55. Class 83(3). A power-operated ratchet-wrench comprises a C-shaped head with jaws to receive the small diameter of the nut, inwardly of which a partial cylindrical surface is provided of a size to receive the corners of the nut, roller-means for engaging the corners, spring-means biasing the roller-means so that when the head is rotated in one direction the nut is engaged and when reversed the roller-means move over the nut, and power-operated means for oscillating the head in a supporting-frame. A pneumaticmotor 10, Fig. 1, controlled by a valve 12, forms a handle for the wrench and is secured to a frame 18 which is flat at its forward-end, Fig. 3. The motor-spindle 16, Fig. 1, drives a cam 38 which reciprocates a spring-returned rack 26. The rack engages a pinion 24 which in turn oscillates, through gear-teeth 36, a C-shaped head 28. The latter is carried in an arcuate guideway of the frame and is adapted to fit over the small diameter of a hexagon nut or bolt. A pair of spring-biased rollers 60, 62, Fig. 4, engage the corners of the nut and rotate it through 30 degrees at each clockwise oscillation of the head. A spring-controlled latch 78 prevents the nut from turning back when the head reverses. An alternative form of ratchet-grip comprises four rotatable dogs 160, 160a, 161, 161a, Fig. 10, which grip in pairs, and a serratedmember 169 which engages the nut-corners to prevent undesired reverse rotation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2347955A GB786227A (en) | 1955-08-15 | 1955-08-15 | Improvements in or relating to ratchet wrenches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2347955A GB786227A (en) | 1955-08-15 | 1955-08-15 | Improvements in or relating to ratchet wrenches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB786227A true GB786227A (en) | 1957-11-13 |
Family
ID=10196275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2347955A Expired GB786227A (en) | 1955-08-15 | 1955-08-15 | Improvements in or relating to ratchet wrenches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB786227A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3940320C1 (en) * | 1989-12-06 | 1991-06-13 | Lorenz 8197 Koenigsdorf De Stoeger | Socket spanner head with hexagonal nut cavity - which has circular base with dia. corresp. to max nut dia. and slidable pin(s) |
WO1995031312A1 (en) * | 1994-05-17 | 1995-11-23 | Serge Simplet | Open-end wrench with alternating rotation control |
WO2002068155A1 (en) * | 2001-02-28 | 2002-09-06 | Slawomir Bylinka | Jamming roller device |
CN114131561A (en) * | 2022-01-23 | 2022-03-04 | 白德健 | Two-way dismouting device of construction machinery allen key |
-
1955
- 1955-08-15 GB GB2347955A patent/GB786227A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3940320C1 (en) * | 1989-12-06 | 1991-06-13 | Lorenz 8197 Koenigsdorf De Stoeger | Socket spanner head with hexagonal nut cavity - which has circular base with dia. corresp. to max nut dia. and slidable pin(s) |
WO1995031312A1 (en) * | 1994-05-17 | 1995-11-23 | Serge Simplet | Open-end wrench with alternating rotation control |
FR2720023A1 (en) * | 1994-05-17 | 1995-11-24 | Serge Simplet | Flat wrench with alternative rotation control. |
WO2002068155A1 (en) * | 2001-02-28 | 2002-09-06 | Slawomir Bylinka | Jamming roller device |
CN114131561A (en) * | 2022-01-23 | 2022-03-04 | 白德健 | Two-way dismouting device of construction machinery allen key |
CN114131561B (en) * | 2022-01-23 | 2024-01-12 | 中铁东北投资发展有限公司 | Bidirectional dismounting device for inner hexagon screw of construction machinery |
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