GB467881A - Improvements in and relating to sirens - Google Patents
Improvements in and relating to sirensInfo
- Publication number
- GB467881A GB467881A GB25237/36A GB2523736A GB467881A GB 467881 A GB467881 A GB 467881A GB 25237/36 A GB25237/36 A GB 25237/36A GB 2523736 A GB2523736 A GB 2523736A GB 467881 A GB467881 A GB 467881A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- steam
- spring
- controls
- diaphragm
- 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
- G10K7/00—Sirens
- G10K7/06—Sirens in which the sound-producing member is driven by a fluid, e.g. by a compressed gas
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
467,881. Diaphragm vibrators. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 16, 1936, No. 25237. Convention date, Sept. 23, 1935. [Class 13] [Also in Group XXVI] A hooter utilizing steam or compressed air comprises two mechanical oscillating devices coupled together, one of which is connected to the device producing the sound vibrations and is brought into oscillation by the steam or air, whilst the other controls the steam or air supply to or exhaust from the first oscillating device. As shown, a piston K, oscillating in a brass-lined cylinder Z, is coupled by a spring F1 to a diaphragm T associated with a horn Tr. The second oscillating device Sz, Fk, which controls the steam or air supply to or exhaust from the cylinder, is connected to the piston by the spring Fk and is arranged to vibrate 90‹ out of phase with the piston. In addition, the piston K oscillates a valve S which also controls the supply of steam or compressed air to the cylinder Z. The diaphragm T may be dished or conical and in conjunction with the spring F1 and piston K may be tuned to a definite frequency, e.g. 75 cycles per sec. The spring F1 may be replaced by a cranked torsion shaft.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE467881X | 1935-09-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB467881A true GB467881A (en) | 1937-06-24 |
Family
ID=6540774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25237/36A Expired GB467881A (en) | 1935-09-23 | 1936-09-16 | Improvements in and relating to sirens |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB467881A (en) |
-
1936
- 1936-09-16 GB GB25237/36A patent/GB467881A/en not_active Expired
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