GB609651A - Improvements in or relating to variable-speed motion-transmitting devices - Google Patents
Improvements in or relating to variable-speed motion-transmitting devicesInfo
- Publication number
- GB609651A GB609651A GB855446A GB855446A GB609651A GB 609651 A GB609651 A GB 609651A GB 855446 A GB855446 A GB 855446A GB 855446 A GB855446 A GB 855446A GB 609651 A GB609651 A GB 609651A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- pin
- gear
- wheel
- driven
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/02—Gearings or mechanisms with other special functional features for conveying rotary motion with cyclically varying velocity ratio
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/18—Control by auxiliary power
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Toys (AREA)
Abstract
609,651. Variable-speed gearing. P.R.T. LABORATORIES, Ltd., and BYFORD, M. S. March 19, 1946, No. 8554. [Class 80 (ii)] [Also in Group XL (c)] In a variable-speed device suitable for the tuning control of radio apparatus giving a large and relatively small speed-reduction ratio, a shaft 10 has secured to it a disc 17 with a V-section groove 18 of involute spiral shape formed in its forward face, and a gear-wheel 14 loosely mounted upon it. A driven shaft 11 has fixed thereto a gear-wheel 13 meshing with the wheel 14 and a cord pulley 22, which serves for transmitting motion to the driven device, e.g. variable condenser. A ball 19, carried in the free end of a rocking arm member 20, engages the V-groove 18. The member 20 is loosely mounted upon the driven shaft 11, and is kept in frictional engagement with the pulley 22 by a spring washer 21. A pin 15 on the gear-wheel 14 is positioned so as to lie in the path of a pin 16 projecting radially from the shaft 10. On rotation of the shaft 10, the shaft 11 is rotated at a high reduction ratio by the movement of the ball 19 in the V-groove 18, until the pin 16 engages the pin 15, whereupon the drive is effected at a low reduction ratio through the gear-wheels 14, 13. In a modification, the driving and driven shafts are nearly coaxial and a direct drive is effected by a pin on the driven pulley engaging a radially-projecting pin on the driving shaft.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB855446A GB609651A (en) | 1946-03-19 | 1946-03-19 | Improvements in or relating to variable-speed motion-transmitting devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB855446A GB609651A (en) | 1946-03-19 | 1946-03-19 | Improvements in or relating to variable-speed motion-transmitting devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB609651A true GB609651A (en) | 1948-10-05 |
Family
ID=9854697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB855446A Expired GB609651A (en) | 1946-03-19 | 1946-03-19 | Improvements in or relating to variable-speed motion-transmitting devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB609651A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2756599A (en) * | 1954-01-04 | 1956-07-31 | Rca Corp | Tuning control mechanism |
US2761321A (en) * | 1953-07-02 | 1956-09-04 | Hallicrafters Co | Tuner mechanism |
US2810292A (en) * | 1955-12-30 | 1957-10-22 | Philco Corp | Driving and indication apparatus |
US2909934A (en) * | 1956-02-13 | 1959-10-27 | Sarkes Tarzian | Television tuner |
US3413861A (en) * | 1966-06-17 | 1968-12-03 | Gen Instrument Corp | Fine-coarse tuning drive |
US3446083A (en) * | 1967-02-10 | 1969-05-27 | Sarkes Tarzian | Two-speed tuner drive system |
-
1946
- 1946-03-19 GB GB855446A patent/GB609651A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2761321A (en) * | 1953-07-02 | 1956-09-04 | Hallicrafters Co | Tuner mechanism |
US2756599A (en) * | 1954-01-04 | 1956-07-31 | Rca Corp | Tuning control mechanism |
US2810292A (en) * | 1955-12-30 | 1957-10-22 | Philco Corp | Driving and indication apparatus |
US2909934A (en) * | 1956-02-13 | 1959-10-27 | Sarkes Tarzian | Television tuner |
US3413861A (en) * | 1966-06-17 | 1968-12-03 | Gen Instrument Corp | Fine-coarse tuning drive |
US3446083A (en) * | 1967-02-10 | 1969-05-27 | Sarkes Tarzian | Two-speed tuner drive system |
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