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
Application number
GB747724A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Priority to GB747724ApriorityCriticalpatent/GB232394A/en
Publication of GB232394ApublicationCriticalpatent/GB232394A/en
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
G11B3/44—Styli, e.g. sapphire, diamond
G11B3/50—Anvils or other supports opposing stylus forces
Abstract
232,394. Jenkins, F. A. E. March 24, 1924. Diaphragms.-A diaphragm for sound-reproducing instruments such as gramophones is mounted in a ring of resilient composition consisting of about 3 parts by weight of glycerine and 1 part by weight of gelatine. The composition is moulded round the edge of the diaphragm.
GB747724A1924-03-241924-03-24An improved resilient composition for mounting tympans or diaphragms for sound reproduction
ExpiredGB232394A
(en)
An Improved Construction of Diaphragm for use in Sound Recording and Sound Reproducing Machines, Telephones and other Instruments in which Vibrating Diaphragms are employed.