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GB440314A - Improvements in or relating to electro-magnetic sound recording and/or reproducing machines - Google Patents

Improvements in or relating to electro-magnetic sound recording and/or reproducing machines

Info

Publication number
GB440314A
GB440314A GB1659835A GB1659835A GB440314A GB 440314 A GB440314 A GB 440314A GB 1659835 A GB1659835 A GB 1659835A GB 1659835 A GB1659835 A GB 1659835A GB 440314 A GB440314 A GB 440314A
Authority
GB
United Kingdom
Prior art keywords
casing
sound recording
motor circuit
contacts
closed
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
GB1659835A
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz AG
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 Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Publication of GB440314A publication Critical patent/GB440314A/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/16—Control of operating function, e.g. switching from recording to reproducing by sensing presence, absence or position of record carrier or container
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/26—Driving record carriers by members acting directly or indirectly thereon
    • G11B15/32—Driving record carriers by members acting directly or indirectly thereon through the reels or cores on to which the record carrier is wound
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
    • G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores

Landscapes

  • Servomotors (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

440,314. Electromagnetic sound recording and reproducing apparatus. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. June 7, 1935, No. 16598. Convention date, June 9, 1934. [Class 40 (ii)] Relates to electromagnetic sound recording and reproducing apparatus comprising an interchangeable set of spools consisting of a casing 1 and two spools 3, 4 for the sound record carrier, a threaded spindle 5 carrying a nut 6 being driven by gear-wheels 13 from the axle of the spool 3 so as to cause the nut 6 to open one or other of the contacts 7, 8 in the circuit of the motor 9 as soon as the record carrier is reaching the end of its movement. According to the invention, one or, as shown, a pair of contacts 11, 12 are provided in the motor circuit and adapted to be closed by studs 14 on the casing 1 so that the motor circuit is closed only when the casing 1 is fitted to the machine. By employing two such contacts the motor circuit will be opened even on oblique removal of the casing 1. The motor circuit also includes a reversing switch 15, 16, the arrangement being such that when switch 16 is closed switch 15 will be opened and vice versa.
GB1659835A 1934-06-09 1935-06-07 Improvements in or relating to electro-magnetic sound recording and/or reproducing machines Expired GB440314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL86057D DE643622C (en) 1934-06-09 1934-06-09 Safety device for sound recording and playback machines with tape or wire-shaped sound carriers, in particular steel sound carriers

Publications (1)

Publication Number Publication Date
GB440314A true GB440314A (en) 1935-12-24

Family

ID=6509274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1659835A Expired GB440314A (en) 1934-06-09 1935-06-07 Improvements in or relating to electro-magnetic sound recording and/or reproducing machines

Country Status (8)

Country Link
AT (1) AT145155B (en)
BE (1) BE409788A (en)
CH (1) CH183501A (en)
DE (1) DE643622C (en)
DK (1) DK51826C (en)
FR (1) FR790969A (en)
GB (1) GB440314A (en)
NL (1) NL41159C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746162C (en) * 1938-10-07 1944-12-14 Lorenz C Ag Steel clay wire machine

Also Published As

Publication number Publication date
AT145155B (en) 1936-04-10
DE643622C (en) 1937-04-13
FR790969A (en) 1935-11-30
DK51826C (en) 1936-06-29
CH183501A (en) 1936-04-15
NL41159C (en)
BE409788A (en)

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