GB644141A - Improvements in or relating to switching-devices for use with electrically-driven gramophones - Google Patents

Improvements in or relating to switching-devices for use with electrically-driven gramophones

Info

Publication number
GB644141A
GB644141A GB28432/47A GB2843247A GB644141A GB 644141 A GB644141 A GB 644141A GB 28432/47 A GB28432/47 A GB 28432/47A GB 2843247 A GB2843247 A GB 2843247A GB 644141 A GB644141 A GB 644141A
Authority
GB
United Kingdom
Prior art keywords
pick
support
switch
lever
apertures
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
GB28432/47A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB644141A publication Critical patent/GB644141A/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
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details

Landscapes

  • Electromechanical Clocks (AREA)

Abstract

644,141. Mechanical switches without quick-action. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 24, 1947. No. 28432. Convention date, June 28. 1946. [Class 38(v)] [Also in Group XXXVIII] The motor switch of an electricallydriven gramophone is actuated both by a manual control and by a spring-loaded' support for the pick-up, the two controls being linked frictionally so that one may be operated independently of the other. The switch, comprising a bell crank lever 21, Fig. 1, and a fixed contact 8, may be closed either by rotating the manual control 18 anti-clockwise, or by raising the pick-up 1 from the spring-loaded support 2. The support 2 is frictionally coupled to the switch lever 21 by a lever 3 which carries a ball or roller 13, Fig. 2, located in apertures 12 in a pair of plate springs 10. If the manual control is operated, the plates 10 are raised and the ball 13 is forced out of the apertures 12, the arm 3 and support 2 remaining stationary under the weight of the pick-up. The switch now remains closed when the control 18 is released, the pick-up is lifted by automatic playing mechanism, and consequently the lever 3 is turned upwards and the ball 13 again snaps into the apertures 12, so that after playing, when the pick-up is returned to the support 2, the switch is opened.
GB28432/47A 1946-06-28 1947-10-24 Improvements in or relating to switching-devices for use with electrically-driven gramophones Expired GB644141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE644141X 1946-06-28

Publications (1)

Publication Number Publication Date
GB644141A true GB644141A (en) 1950-10-04

Family

ID=20313872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28432/47A Expired GB644141A (en) 1946-06-28 1947-10-24 Improvements in or relating to switching-devices for use with electrically-driven gramophones

Country Status (1)

Country Link
GB (1) GB644141A (en)

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