GB688043A - Improvements in recording apparatus - Google Patents

Improvements in recording apparatus

Info

Publication number
GB688043A
GB688043A GB688750A GB688750A GB688043A GB 688043 A GB688043 A GB 688043A GB 688750 A GB688750 A GB 688750A GB 688750 A GB688750 A GB 688750A GB 688043 A GB688043 A GB 688043A
Authority
GB
United Kingdom
Prior art keywords
leadscrew
relay
motor
band
switch
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
GB688750A
Inventor
Henry Hans Allen
Hugh Valentine Sothers
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.)
Acordis UK Ltd
Original Assignee
British Celanese Ltd
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 British Celanese Ltd filed Critical British Celanese Ltd
Priority to GB688750A priority Critical patent/GB688043A/en
Publication of GB688043A publication Critical patent/GB688043A/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
    • 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
    • G11B15/70—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 the record carrier being an endless loop record carrier

Abstract

688,043. Magnetic recording apparatus. BRITISH CELANESE, Ltd. March 19, 1951 [March 20, 1950], No. 6887/50. Class 40 (ii). In a magnetic recording apparatus as in Specification 684,569, the carriage 50, Fig. 3, supporting the magnetic heads is made to continuously move across the width of the tape by means of a leadscrew 57 which is driven by the record band via the recording roller 19, a double worm drive gearing 64, 65, 66, 67 and a slipping clutch 69, 70, 71 which permits the carriage 50 to be moved manually by means of a handle 77. The passage of the magnetic heads is indicated by means of a numbered dial 79 which is moved step by step at each revolution of the leadscrew 57 by a singletoothed arm 84 on the leadscrew 57 and an idler gear 81. The numerals on the dial 79 show through a window 89 in the lid of the casing. An alternative clutch 91, 92, 93 (Fig. 5) is described in which balls replace the friction lining, and. recesses are provided whereby the leadscrew 57 may be rotated manually in steps of 180 degrees, or any other desired exact amount. The metallic shorting strip provided at a certain position on the band serves to stop the driving motor when required when a datum line on the band passes a fixed point in the machine. For this purpose the record/replay switch 10 (Fig. 6) is provided with a central position in which an electric supply 100 is not connected to the motor 38 until a press switch 11 is closed, whereby a relay 107 is energized to close normally-open switch contacts 108, 105 and the motor 38 thereby started, circuit being maintained after release of switch 11 through contacts 111, 112 of the relay 107: When the shorting strip on the band connects contacts 14, 96, Fig. 1, relay 116 is temporarily tripped so that circuit through relay 107 is broken, and both relays returned to their normal positions (as shown) and the motor circuit broken. Specification 678,038, [Group VIII], also is referred to.
GB688750A 1950-03-20 1950-03-20 Improvements in recording apparatus Expired GB688043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB688750A GB688043A (en) 1950-03-20 1950-03-20 Improvements in recording apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB688750A GB688043A (en) 1950-03-20 1950-03-20 Improvements in recording apparatus

Publications (1)

Publication Number Publication Date
GB688043A true GB688043A (en) 1953-02-25

Family

ID=9822605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB688750A Expired GB688043A (en) 1950-03-20 1950-03-20 Improvements in recording apparatus

Country Status (1)

Country Link
GB (1) GB688043A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2843734A1 (en) * 1977-10-07 1979-04-12 Thomson Csf RECORDING AND READING DEVICE FOR INFORMATION ON A MAGNETIC TAPE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2843734A1 (en) * 1977-10-07 1979-04-12 Thomson Csf RECORDING AND READING DEVICE FOR INFORMATION ON A MAGNETIC TAPE

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