GB685171A - Improvements in or relating to sound boxes for gramophones and the like - Google Patents

Improvements in or relating to sound boxes for gramophones and the like

Info

Publication number
GB685171A
GB685171A GB26553/50A GB2655350A GB685171A GB 685171 A GB685171 A GB 685171A GB 26553/50 A GB26553/50 A GB 26553/50A GB 2655350 A GB2655350 A GB 2655350A GB 685171 A GB685171 A GB 685171A
Authority
GB
United Kingdom
Prior art keywords
sound
diaphragm
box
arm
needle
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
Application number
GB26553/50A
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
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB685171A publication Critical patent/GB685171A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • 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

  • Spinning Or Twisting Of Yarns (AREA)

Abstract

685,171. Gramophone sound-boxes. SCHMIDT, P. Oct. 31, 1950 [Oct. 31, 1949], No. 26553/50. Class 40 (ii). In a sound-box for a gramophone, vibrations are transmitted from the needle point to the diaphragm 6 through a rigid triangular connecting member 20 of non-metallic material, such as fibre sheet, in the form of a pivotally mounted bell-crank lever, one arm of which engages the diaphragm, and the other arm aligned with the needle and preferably constructed as the needle holder 18. The member 20 is held against pivotal points 11 by screws 13 which are insulated from the member 20 by rubber blocks 14. The member 20 is connected to the diaphragm 6 by means of a rubber thread 23 lashed round the member 20 and a pad 7 of the diaphragm 6. The back 1 of the sound-box is made of non-metallic material and is connected to the tone-arm by a tube 32 secured by a pressure ring 27 and rubber rings 25, 26 which grip a flange 24 on the tube 32. The sound-box is fitted with a depending skirt 39 of sound deadening material, such as plush.
GB26553/50A 1949-10-31 1950-10-31 Improvements in or relating to sound boxes for gramophones and the like Expired GB685171A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE685171X 1949-10-31

Publications (1)

Publication Number Publication Date
GB685171A true GB685171A (en) 1952-12-31

Family

ID=6597785

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26553/50A Expired GB685171A (en) 1949-10-31 1950-10-31 Improvements in or relating to sound boxes for gramophones and the like

Country Status (1)

Country Link
GB (1) GB685171A (en)

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