GB696481A - Improvements relating to variable speed driving mechanisms - Google Patents
Improvements relating to variable speed driving mechanismsInfo
- Publication number
- GB696481A GB696481A GB806250A GB806250A GB696481A GB 696481 A GB696481 A GB 696481A GB 806250 A GB806250 A GB 806250A GB 806250 A GB806250 A GB 806250A GB 696481 A GB696481 A GB 696481A
- Authority
- GB
- United Kingdom
- Prior art keywords
- turntable
- lever
- gramophone
- secondary wheels
- wheels
- 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
- F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
- F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
- F16H15/46—Gearings providing a discontinuous or stepped range of gear ratios
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
Abstract
696,481. Change-speed gearing. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 27, 1951 [March 31, 1950], No. 8062/50. Class 80 (ii). Change-speed gearing, shown as applied to a gramophone, comprises a driving friction member 5, on the spindle of a constant speed electric motor, either engaging directly with a main idler wheel 7 to drive the gramophone turntable 2, or alternatively engaging with the main idler wheel through secondary wheels 20, 14 or 21, 15, the secondary wheels being mounted on a lever 11 rotatable about the axis of the motor shaft. The main idler 7 is mounted on an arm 29 having slotted engagement with a pin 31 mounted on the gramophone base-plate so as to be urged into engagement with the turntable 2, driving member 5 &c. by a spring 28, and the secondary wheels 20, 21 are mounted on rods 24, 25 slidable in lugs on the lever 11 and urged by springs 24<SP>1</SP>, 25<SP>1</SP> to engage these wheels with the driving member 5 and the other secondary wheels 14, 15 respectively. The lever 11 is retained in position by a click device 34, and may be operated directly by hand, or by an arm device designed to give a slow change between the various ratios, or by means for automatically bringing into operation pick-ups suited to the different speeds of the turntable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB806250A GB696481A (en) | 1950-03-31 | 1950-03-31 | Improvements relating to variable speed driving mechanisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB806250A GB696481A (en) | 1950-03-31 | 1950-03-31 | Improvements relating to variable speed driving mechanisms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB696481A true GB696481A (en) | 1953-09-02 |
Family
ID=9845049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB806250A Expired GB696481A (en) | 1950-03-31 | 1950-03-31 | Improvements relating to variable speed driving mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB696481A (en) |
-
1950
- 1950-03-31 GB GB806250A patent/GB696481A/en not_active Expired
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