GB710672A - An attachment device for a gramophone - Google Patents

An attachment device for a gramophone

Info

Publication number
GB710672A
GB710672A GB107852A GB107852A GB710672A GB 710672 A GB710672 A GB 710672A GB 107852 A GB107852 A GB 107852A GB 107852 A GB107852 A GB 107852A GB 710672 A GB710672 A GB 710672A
Authority
GB
United Kingdom
Prior art keywords
turntable
spring
burglar
gramophone
hole
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
GB107852A
Inventor
Archibald Hogbin
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.)
RELY A BELL BURGLAR AND FIRE A
Original Assignee
RELY A BELL BURGLAR AND FIRE A
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 RELY A BELL BURGLAR AND FIRE A filed Critical RELY A BELL BURGLAR AND FIRE A
Priority to GB107852A priority Critical patent/GB710672A/en
Publication of GB710672A publication Critical patent/GB710672A/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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof

Landscapes

  • Burglar Alarm Systems (AREA)

Abstract

710,672. Gramophone turntable accessories; burglar and like alarms. RELY-A-BELL BURGLAR & FIRE ALARM CO., Ltd. Jan. 13, 1953 [Jan. 14, 1952], No. 1078/52. Classes 40 (2) and 118 (1). An attachment to a gramophone, employed for example as part of a burglar or other alarm system, comprises means for ensuring initial rotational movement of the turntable, in the form of coiled spring 2 secured to a post 3 and having a free end 1 which engages a hole 9 in the periphery of the turntable 6. The Figure shows the spring 2 in its initial tensed position in which it is held by a detent 7 which may be an extension on the armature of a relay energised by the alarm circuit. The free end 1 of the spring 2 may be provided with an additional arm 10 for retaining the pick-up 13 in the correct starting position, and also hold it out of contact with the record, until the movement of the turntable has been initiated. As the turntable revolves, assisted by the spring 2, the arm 1 is free to slide longitudinally of the hole 9 and eventually slips out of the hole 9 and comes to rest against a stop pin 8.
GB107852A 1952-01-14 1952-01-14 An attachment device for a gramophone Expired GB710672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB107852A GB710672A (en) 1952-01-14 1952-01-14 An attachment device for a gramophone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB107852A GB710672A (en) 1952-01-14 1952-01-14 An attachment device for a gramophone

Publications (1)

Publication Number Publication Date
GB710672A true GB710672A (en) 1954-06-16

Family

ID=9715782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB107852A Expired GB710672A (en) 1952-01-14 1952-01-14 An attachment device for a gramophone

Country Status (1)

Country Link
GB (1) GB710672A (en)

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