GB329074A - Improvements in or relating to signalling devices - Google Patents
Improvements in or relating to signalling devicesInfo
- Publication number
- GB329074A GB329074A GB809629A GB809629A GB329074A GB 329074 A GB329074 A GB 329074A GB 809629 A GB809629 A GB 809629A GB 809629 A GB809629 A GB 809629A GB 329074 A GB329074 A GB 329074A
- Authority
- GB
- United Kingdom
- Prior art keywords
- operated
- cams
- air
- electromagnet
- cam
- 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
- G10K9/02—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated
- G10K9/04—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated by compressed gases, e.g. compressed air
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Reciprocating Pumps (AREA)
- Toys (AREA)
Abstract
329,074. White. A. E., (Sparks-Withing- ton Co.). March 12, 1929. Fluid supply for horns.-A signalling device, particularly for use on motor cars, comprises a number of sounding devices adapted to be supplied with air under pressure either simultaneously or in predetermined succession, at the will of the operator. In the construction shown, air is forced into a storage chamber 11 by a rotary compressor 22 operated by an electric motor A, and passes by passage ways 8 - - 10, Fig. 4, to sounding members 1, 2, 3 of the kind having a diaphragm 16 closing the throat of the horn. The supply of air to the passageways is controlled by lift valves 34, 35, 36 operated in succession by cams 43, 44, 45 on a cam-shaft 42 driven by the motor, or simultaneously by a pivoted yoke 46 operated by an electromagnet 55. The selection is effected by a two-way switch. In simultaneous operation, if the switch is closed only momentarily, the duration of the sound is controlled by cams 56, 57 on the cam-shaft, the cams operating switches in the circuit of the electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB809629A GB329074A (en) | 1929-03-12 | 1929-03-12 | Improvements in or relating to signalling devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB809629A GB329074A (en) | 1929-03-12 | 1929-03-12 | Improvements in or relating to signalling devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB329074A true GB329074A (en) | 1930-05-15 |
Family
ID=9845677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB809629A Expired GB329074A (en) | 1929-03-12 | 1929-03-12 | Improvements in or relating to signalling devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB329074A (en) |
-
1929
- 1929-03-12 GB GB809629A patent/GB329074A/en not_active Expired
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