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Expired
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GB1488425A
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Priority to GB1488425ApriorityCriticalpatent/GB262158A/en
Publication of GB262158ApublicationCriticalpatent/GB262158A/en
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
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Engineering & Computer Science
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Acoustics & Sound
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Abstract
262,158. Northey, J. P. June 8, 1925. Masts. - Storage chambers 3<a>, 2<a> for the driving and sound-producing air, respectively, of a siren 6 are formed in the hollow mast 10 of a ship, the chambers being connected through a pipe 4 containing a one-way valve 5.
GB1488425A1925-06-081925-06-08Improvements in sound signalling installations
ExpiredGB262158A
(en)
Tubes and glass containers of all kinds and luminous colors based on gases "Argon and helium, alone or combined with each other or with other gases.
Improvements relating to voice tubes for communicating between stations, specially applicable for use between engine room and boiler houses, or engine room and bridge onboard ship