GB819628A - Improvements in tape transport apparatus - Google Patents

Improvements in tape transport apparatus

Info

Publication number
GB819628A
GB819628A GB500758A GB500758A GB819628A GB 819628 A GB819628 A GB 819628A GB 500758 A GB500758 A GB 500758A GB 500758 A GB500758 A GB 500758A GB 819628 A GB819628 A GB 819628A
Authority
GB
United Kingdom
Prior art keywords
light
photo
cell
catenary
source
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
GB500758A
Inventor
John Albert Formby
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.)
John Formby and Co Ltd
Original Assignee
John Formby and Co 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 John Formby and Co Ltd filed Critical John Formby and Co Ltd
Priority to GB500758A priority Critical patent/GB819628A/en
Publication of GB819628A publication Critical patent/GB819628A/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
    • 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
    • G11B15/56—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 having reserve loop, e.g. to minimise inertia during acceleration measuring or control in connection therewith
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
    • G06K13/18—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier being longitudinally extended, e.g. punched tape
    • G06K13/26—Winding-up or unwinding of record carriers; Driving of record carriers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

819,628. Automatic control systems. FORMBY & CO. Ltd., J. Sept. 23, 1955, No. 5007/58. Class 38 (4). In a tape-transport apparatus the catenary formed by an opaque tape suspended between a supply spool and a driving means is detected by two beams of light which influence photoelectrically-operated switch means controlling an electromagnetic clutch in the spool drive so as to maintain the catenary between limits defined by the two beams of light. When a sprocket 27, rotating clockwise, feeds data tape past an erase head 59 and a recording or repro ducing head 26, the catenary formed by the tape at the left-hand side of the sprocket is shortened until a beam of light from a source 53 falls on a photo-cell 55. The response of the photo-cell fires a thyratron 57 and current through the latter operates a clutch 47 to cause the supply spool 45 to be driven against the resistance of a light brake 58. When the lower tip of the catenary obscures the beam of light from a source 52 the response of a second photo-cell 54 fires a thyratron 56 which quenches the thyratron 57 and so disengages the spool drive. Similarly, a take-up spool is started when the right-hand catenary obscures the beam from source 52 to a photo-cell 54a, and is stopped when a photo-cell 55a responds to light from the source 53. Specification 817,321, [Group XXXVIII], is referred to.
GB500758A 1955-09-23 1955-09-23 Improvements in tape transport apparatus Expired GB819628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB500758A GB819628A (en) 1955-09-23 1955-09-23 Improvements in tape transport apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB500758A GB819628A (en) 1955-09-23 1955-09-23 Improvements in tape transport apparatus

Publications (1)

Publication Number Publication Date
GB819628A true GB819628A (en) 1959-09-09

Family

ID=9787989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB500758A Expired GB819628A (en) 1955-09-23 1955-09-23 Improvements in tape transport apparatus

Country Status (1)

Country Link
GB (1) GB819628A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1294695B (en) * 1963-11-08 1969-05-08 Benson France Fa Registration device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1294695B (en) * 1963-11-08 1969-05-08 Benson France Fa Registration device

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