GB203461A - Improvements in or relating to devices for producing sound warning signals - Google Patents
Improvements in or relating to devices for producing sound warning signalsInfo
- Publication number
- GB203461A GB203461A GB1861022A GB1861022A GB203461A GB 203461 A GB203461 A GB 203461A GB 1861022 A GB1861022 A GB 1861022A GB 1861022 A GB1861022 A GB 1861022A GB 203461 A GB203461 A GB 203461A
- Authority
- GB
- United Kingdom
- Prior art keywords
- holders
- shaft
- relating
- devices
- brushes
- 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
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/10—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by mechanical means only
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
203,461. Monnot, J. F. July 6, 1922. Casings; brushes; brush-holders. -In a horn of the type in which a stud 13 on the diaphragm 4 is struck by a rotating cam 11 o n the shaft 10 of an electric motor, the casing 1 is of magnetic iron and constitutes the carcase of the motor, the poles 2, 2a, being of unequal length and the longer carrying a single field coil 8. The brush-holders 26 and terminals 26<a> are carried in a single insulator 25, and contact is made between the brushes 27 and the holders by a copper wire 31 with a washer at each end. Lubrication is effected bv means of an oil pad 15 pressed against the shaft 10 and by means of a cavity 21 in the bush 18 which is filled with grease, a ring 22 in a groove 23 holding the shaft in the bush and preventing escape of grease.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1861022A GB203461A (en) | 1922-07-06 | 1922-07-06 | Improvements in or relating to devices for producing sound warning signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1861022A GB203461A (en) | 1922-07-06 | 1922-07-06 | Improvements in or relating to devices for producing sound warning signals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB203461A true GB203461A (en) | 1923-09-13 |
Family
ID=10115387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1861022A Expired GB203461A (en) | 1922-07-06 | 1922-07-06 | Improvements in or relating to devices for producing sound warning signals |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB203461A (en) |
-
1922
- 1922-07-06 GB GB1861022A patent/GB203461A/en not_active Expired
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