GB360725A - Improvements in indicating devices for electro-magnetic talking machines - Google Patents

Improvements in indicating devices for electro-magnetic talking machines

Info

Publication number
GB360725A
GB360725A GB38396/30A GB3839630A GB360725A GB 360725 A GB360725 A GB 360725A GB 38396/30 A GB38396/30 A GB 38396/30A GB 3839630 A GB3839630 A GB 3839630A GB 360725 A GB360725 A GB 360725A
Authority
GB
United Kingdom
Prior art keywords
record
casing
machine
gear
scale
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
GB38396/30A
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.)
TELEGRAPHIE PATENT SYNDIKAT
Original Assignee
TELEGRAPHIE PATENT SYNDIKAT
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 TELEGRAPHIE PATENT SYNDIKAT filed Critical TELEGRAPHIE PATENT SYNDIKAT
Publication of GB360725A publication Critical patent/GB360725A/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
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G11B27/13—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer
    • 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
    • G11B27/34—Indicating arrangements 

Landscapes

  • Transmission Devices (AREA)

Abstract

360,725. Electromagnetic sound-recording or reproducing apparatus. TELEGRAPHIE-PATENTSYNDIKAT GES., 119B, Potsdamerstrasse, Berlin. Dec. 19, 1930, No. 38396. Convention date, Dec. 19, 1929. [Class 40 (ii).] Each record of an electromagnetic machine is provided with its own indicator which indicates on a scale the part of the record wire or band which is passing through the sound head. The indicator is adapted for detachable connection to the machine and is preferably mounted on the casing containing the winding spools. The spools T1, T2 are mounted in a casing Sp and adapted to be operatively connected with shafts W1, W2 of the talking machine when placed in position on the machine table M. The casing Sp is provided with a graduated scale Sk which represents the length of the record and an index Z carried by a collar Sch, slidable on a guide-rod F, is arranged to move over the scale to indicate the part of the record passing through the sound bead. For this purpose, the collar Sch is connected through a slot a in the casing wall with a nut L on a screw spindle S within the casing. A conical gear Z2 at one end of the spindle gears with a gear Z1, mounted on a driving shaft W3 driven by the machine to move the index Z along the scale Sk at a speed proportionate to that of the record. The gear Z1 is slidably feathered on the shaft W3 and supported by a spring f accommodated in a bore in the shaft W3, which enables the gear Z1 to adapt itself to the varying positions of different gears Z2.
GB38396/30A 1929-12-19 1930-12-19 Improvements in indicating devices for electro-magnetic talking machines Expired GB360725A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE360725X 1929-12-19

Publications (1)

Publication Number Publication Date
GB360725A true GB360725A (en) 1931-11-12

Family

ID=6295575

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38396/30A Expired GB360725A (en) 1929-12-19 1930-12-19 Improvements in indicating devices for electro-magnetic talking machines

Country Status (1)

Country Link
GB (1) GB360725A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184521B (en) * 1954-07-29 1964-12-31 Protona Produktionsgesellschaf Magnetic pocket device
US3661394A (en) * 1969-04-15 1972-05-09 Grundig Emv Tape recorder with pointer drive
US4338644A (en) 1978-10-27 1982-07-06 Staar S. A. Magnetic tape cassettes provided with memory circuits for storing information
US4383285A (en) 1980-09-05 1983-05-10 Staar S.A. Memory error signal devices for tape cassettes with memory

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184521B (en) * 1954-07-29 1964-12-31 Protona Produktionsgesellschaf Magnetic pocket device
US3661394A (en) * 1969-04-15 1972-05-09 Grundig Emv Tape recorder with pointer drive
US4338644A (en) 1978-10-27 1982-07-06 Staar S. A. Magnetic tape cassettes provided with memory circuits for storing information
US4383285A (en) 1980-09-05 1983-05-10 Staar S.A. Memory error signal devices for tape cassettes with memory

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