GB373422A - Improvements in or relating to portable gramophones - Google Patents

Improvements in or relating to portable gramophones

Info

Publication number
GB373422A
GB373422A GB15976/31A GB1597631A GB373422A GB 373422 A GB373422 A GB 373422A GB 15976/31 A GB15976/31 A GB 15976/31A GB 1597631 A GB1597631 A GB 1597631A GB 373422 A GB373422 A GB 373422A
Authority
GB
United Kingdom
Prior art keywords
elbow
tonearm
gramophones
collar
swinging portion
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
GB15976/31A
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.)
HILGENBERG LUDWIG R
Original Assignee
HILGENBERG LUDWIG R
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 HILGENBERG LUDWIG R filed Critical HILGENBERG LUDWIG R
Publication of GB373422A publication Critical patent/GB373422A/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
    • G11B3/02—Arrangements of heads
    • G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
    • G11B3/12—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse
    • G11B3/14—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse by using effects of gravity or inertia, e.g. counterweight

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

373,422. Gramophones. HILGENBERG, L. R., 3, Naunhofer Strasse, Marienh÷he, Leipsic, Germany. June 1, 1931, No. 15976. Convention date, June 13, 1930. [Class 40 (ii).] Relates to portable gramophones in which the tonearm is balanced and in substantially neutral equilibrium, the needle pressure being obtained by means such as a spring. According to the invention, the tonearm comprises a normally stationary elbow portion b connected at its outer end with the swinging portion a of the tone-arm, the tonearm and sound-box being balanced by means of a balance weight c secured to the swinging portion and extending alongside and adjacent the elbow. The swinging portion a is stiffly rotatable within a collar g an extension of which is universally-mounted within a collar e on the elbow b, as by a gimbal mounting. The tone-arm and sound-box are maintained in neutral equilibrium by a balance weight c supported by arms d extending from the collar g. Suitable resilient means is located between the collars g and e to provide needle pressure on the record. The elbow b is stiffly movable relative to the fixing flange f to allow the soundbox to be positioned conveniently in the carrying case.
GB15976/31A 1930-06-13 1931-06-01 Improvements in or relating to portable gramophones Expired GB373422A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE373422X 1930-06-13

Publications (1)

Publication Number Publication Date
GB373422A true GB373422A (en) 1932-05-26

Family

ID=6338002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15976/31A Expired GB373422A (en) 1930-06-13 1931-06-01 Improvements in or relating to portable gramophones

Country Status (1)

Country Link
GB (1) GB373422A (en)

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