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
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Ernest De La Rue
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Individual
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Individual
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Publication of GB191208236ApublicationCriticalpatent/GB191208236A/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
Landscapes
Telephone Set Structure
(AREA)
Abstract
8236. De la Rue, E. April 4. Diaphragms and sound-boxes.-In a soundbox diaphragm e of the type secured by its edge in an elastic ring f, the ring f is held in position by the split portions a, c of the soundbox and screws d. This prevents cockling or damaging of the diaphragm in mounting.
GB191208236D1912-04-041912-04-04Improvements in Sound Boxes for Gramophones.
ExpiredGB191208236A
(en)