GB554470A - An improved gramophone pick-up arm - Google Patents

An improved gramophone pick-up arm

Info

Publication number
GB554470A
GB554470A GB1549141A GB1549141A GB554470A GB 554470 A GB554470 A GB 554470A GB 1549141 A GB1549141 A GB 1549141A GB 1549141 A GB1549141 A GB 1549141A GB 554470 A GB554470 A GB 554470A
Authority
GB
United Kingdom
Prior art keywords
pick
arm
mercury
runs
gramophone pick
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
GB1549141A
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
Priority to GB1549141A priority Critical patent/GB554470A/en
Publication of GB554470A publication Critical patent/GB554470A/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
    • G11B3/18—Damping by using viscosity effect

Landscapes

  • Apparatus For Radiation Diagnosis (AREA)

Abstract

554,470. Gramophones ; electric switches. MARTIN, R. E. Dec. 2, 1941, No. 15491. [Class 40 (ii)] [Also in Group XXXVII] The pick-up or like arm of a gramophone or the like is fitted with a movable mass such as a quantity of mercury 3 which, when the arm is lowered to its playing position, Fig. 1, runs to the pick-up end and weighs the pick-up down, and when the arm is lifted to the non-playing positions, Fig. 3, runs to the opposite end of the pick-up arm and holds the pick-up in the raised position. The mercury may also act as a switch, serving to connect the end of an insulated wire 7 to the body of the pick-up arm as shown in Fig. to short circuit the pick-up or a loud-speaker when the pick-up is raised.
GB1549141A 1941-12-02 1941-12-02 An improved gramophone pick-up arm Expired GB554470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1549141A GB554470A (en) 1941-12-02 1941-12-02 An improved gramophone pick-up arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1549141A GB554470A (en) 1941-12-02 1941-12-02 An improved gramophone pick-up arm

Publications (1)

Publication Number Publication Date
GB554470A true GB554470A (en) 1943-07-06

Family

ID=10060050

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1549141A Expired GB554470A (en) 1941-12-02 1941-12-02 An improved gramophone pick-up arm

Country Status (1)

Country Link
GB (1) GB554470A (en)

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