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GB909347A - Improvements in or relating to vacuum capstans - Google Patents

Improvements in or relating to vacuum capstans

Info

Publication number
GB909347A
GB909347A GB38197/60A GB3819760A GB909347A GB 909347 A GB909347 A GB 909347A GB 38197/60 A GB38197/60 A GB 38197/60A GB 3819760 A GB3819760 A GB 3819760A GB 909347 A GB909347 A GB 909347A
Authority
GB
United Kingdom
Prior art keywords
tape
vacuum
over
capstans
pair
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
GB38197/60A
Inventor
David Thomas Gwillim
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.)
Decca Ltd
Original Assignee
Decca 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 Decca Ltd filed Critical Decca Ltd
Priority to GB38197/60A priority Critical patent/GB909347A/en
Priority to DE19621424499 priority patent/DE1424499B2/en
Priority to US177477A priority patent/US3151795A/en
Publication of GB909347A publication Critical patent/GB909347A/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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/38—Driving record carriers by pneumatic means
    • 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
    • G11B15/22—Stopping means
    • 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
    • G11B15/28—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal
    • G11B15/285—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal through pneumatic means
    • 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
    • G11B15/60—Guiding record carrier

Landscapes

  • Advancing Webs (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

909,347. Vacuum tape capstans. DECCA Ltd. Feb. 7, 1962 [Nov. 7, 1960], No. 38197/60. Class 40 (2). [Also in Group XXIX] The rotary member 10 of a vacuum tape capstan which contacts the tape over a 90 degrees segment of the base of a groove 11 has a hollow interior which accommodates a solenoidoperated change-over valve 21, whose position is adjustable by eccentric means 75 and clamping means 25 such that a circumferential slot 71 in a carbon pad 73 may be closely aligned with holes 35 communicating, together with grooves 36, with the contacting face of the tape. The valve consists of a ferrous disc 60 attracted by one or the other of a pair of magnetic pot-cores 44, 45, energized by windings 46, 47 shown sealing the gap between the corewall 51 and a non-magnetic winding former 62 such that a vacuum source 21 may be put into communication with the slot 71 as shown by the arrows. On change-over, an atmospheric port 58 may be communicated to release the tape. In further embodiments, the port 58 may be connected with air under pressure to provide a quick release of pipe-drive or a light vacuum may be applied to maintain the tape slidingly in the vicinity of the groove 11. A pair of oppositely driven capstans may be connected to provide tape drive in either direction. A keeper 12 (and a stripper, Fig. 1, not shown) are provided and are made movable for tapeloading.
GB38197/60A 1960-11-07 1960-11-07 Improvements in or relating to vacuum capstans Expired GB909347A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB38197/60A GB909347A (en) 1960-11-07 1960-11-07 Improvements in or relating to vacuum capstans
DE19621424499 DE1424499B2 (en) 1960-11-07 1962-02-19 VACUUM BELT DRIVE
US177477A US3151795A (en) 1960-11-07 1962-03-05 Vacuum capstans

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB38197/60A GB909347A (en) 1960-11-07 1960-11-07 Improvements in or relating to vacuum capstans
DED0038177 1962-02-19
US177477A US3151795A (en) 1960-11-07 1962-03-05 Vacuum capstans

Publications (1)

Publication Number Publication Date
GB909347A true GB909347A (en) 1962-10-31

Family

ID=27209725

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38197/60A Expired GB909347A (en) 1960-11-07 1960-11-07 Improvements in or relating to vacuum capstans

Country Status (3)

Country Link
US (1) US3151795A (en)
DE (1) DE1424499B2 (en)
GB (1) GB909347A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443988A1 (en) * 1978-12-11 1980-07-11 Bell & Howell Co BAND ADVANCING METHODS AND DEVICES

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1032778A (en) * 1963-12-23 1966-06-15 Decca Ltd Improvements in or relating to magnetic tape recording and reproducing apparatus
US3289905A (en) * 1964-09-23 1966-12-06 Sperry Rand Corp Pneumatic capstan having a high speed electro-magnetic valve
US3319860A (en) * 1965-04-30 1967-05-16 Sperry Rand Corp Tape transport system
US3313462A (en) * 1966-06-02 1967-04-11 Hupp Corp Air flotation direction changing roll
US3741453A (en) * 1971-11-12 1973-06-26 Bouligny R Inc Piddler mechanism feeding means

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013487A (en) * 1957-01-18 1961-12-19 Time Inc Apparatus for tension control
GB828257A (en) * 1957-04-11 1960-02-17 Int Computers & Tabulators Ltd Improvements in or relating to tape-feeding apparatus
GB846426A (en) * 1958-04-28 1960-08-31 Nat Res Dev Tape motion control mechanisms
US2954911A (en) * 1958-06-25 1960-10-04 Ibm Tape drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443988A1 (en) * 1978-12-11 1980-07-11 Bell & Howell Co BAND ADVANCING METHODS AND DEVICES

Also Published As

Publication number Publication date
DE1424499A1 (en) 1968-11-28
DE1424499B2 (en) 1971-04-01
US3151795A (en) 1964-10-06

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