GB350138A - Improved free-wheel coupling - Google Patents
Improved free-wheel couplingInfo
- Publication number
- GB350138A GB350138A GB1194230A GB1194230A GB350138A GB 350138 A GB350138 A GB 350138A GB 1194230 A GB1194230 A GB 1194230A GB 1194230 A GB1194230 A GB 1194230A GB 350138 A GB350138 A GB 350138A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pawl
- flywheel
- driven
- driving shaft
- shaft
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/32—Details specially adapted for motion-picture projection
- G03B21/43—Driving mechanisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gear Transmission (AREA)
Abstract
350,138. Kinematograph apparatus. GRAMOPHONE CO., Ltd. and STANLEY, H. H. V., 79, North Hyde Road, both in Hayes, and CLARK, G. F., 39, Brandville Road, West Drayton, both in Middlesex. April 15, 1930, No. 11942. [Class 97 (i).] The film-winding spool is driven through a freewheel clutch 14, 19 of special construction, allowing overrunning in both directions when the drive ceases and in some cases also a bidirectional drive. The clutch comprises a two-armed pivoted pawl 17 moved into or out of engagement with a driven ratchet ring 19 by the limited relative movement,. under the influence of inertia, of a flywheel 14 freely mounted on the driving shaft 1. The pawl is pivoted on the flywheel and deceleration thereof relative to the driver causes the tail 15 of the pawl to contact with a projection 12 on a boss 11 fixed to the driving shaft 1, to engage the pawl. The pawl is biassed towards the disengaged position, by a spring 16 anchored to an arm 13 on the boss 11 and there may be a stop pin 22 on the flywheel to ensure a slight tension of the spring when in the disengaged position. Duplicate opposite pawls may be provided for a bidirectional drive. There may also be a friction drag tending to cause the flywheel to lay behind the driving shaft. The clutch which is driven by a shaft 1 is mounted in bearings 2, 4 on the side of the casing of the film spool, to theshaft 7 of which, the driven shaft 3 is connected by worm gearing 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1194230A GB350138A (en) | 1930-04-15 | 1930-04-15 | Improved free-wheel coupling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1194230A GB350138A (en) | 1930-04-15 | 1930-04-15 | Improved free-wheel coupling |
Publications (1)
Publication Number | Publication Date |
---|---|
GB350138A true GB350138A (en) | 1931-06-11 |
Family
ID=9995468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1194230A Expired GB350138A (en) | 1930-04-15 | 1930-04-15 | Improved free-wheel coupling |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB350138A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012054984A1 (en) * | 2010-10-27 | 2012-05-03 | James Kwok | Torque reversal and clutch gear coupling |
-
1930
- 1930-04-15 GB GB1194230A patent/GB350138A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012054984A1 (en) * | 2010-10-27 | 2012-05-03 | James Kwok | Torque reversal and clutch gear coupling |
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