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
GB16081/26A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLCfiledCriticalStandard Telephone and Cables PLC
Publication of GB254333ApublicationCriticalpatent/GB254333A/en
H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
H04R1/00—Details of transducers, loudspeakers or microphones
H04R1/16—Mounting or connecting stylus to transducer with or without damping means
Landscapes
Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Acoustics & Sound
(AREA)
Signal Processing
(AREA)
Holding Or Fastening Of Disk On Rotational Shaft
(AREA)
Abstract
254,333. Standard Telephones & Cables, Ltd., (Assignees of Harrison, H. C.). May 29, 1925, [Convention date]. Drawings to Specification. Diaphragms.-Consists in detail improvements in phonographic recording or reproducing soundboxes, in which the diaphragm is connected to the stylus-bar by a spider, which has flexible radial arms attached to the diaphragm and is secured at its centre to the bar. Two forms of sound-boxes, made in accordance with the invention, and constructed as described in Specification 252,657 are described and shown. In each instance the diaphragm employed is corrugated in a special manner.
GB16081/26A1925-05-291925-09-22Sound recording or reproducing devices
ExpiredGB254333A
(en)