US2883475A - Driving arrangements - Google Patents

Driving arrangements Download PDF

Info

Publication number
US2883475A
US2883475A US443398A US44339854A US2883475A US 2883475 A US2883475 A US 2883475A US 443398 A US443398 A US 443398A US 44339854 A US44339854 A US 44339854A US 2883475 A US2883475 A US 2883475A
Authority
US
United States
Prior art keywords
band
reservoir
driving
cylinder
drum
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 - Lifetime
Application number
US443398A
Other languages
English (en)
Inventor
Ridler Desmond Sydney
Armsby Bernard Frank
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Priority claimed from GB2249053A external-priority patent/GB744197A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority claimed from GB3741855A external-priority patent/GB813792A/en
Application granted granted Critical
Publication of US2883475A publication Critical patent/US2883475A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/02—Details not particular to receiver or transmitter
    • H04L13/06—Tape or page guiding or feeding devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • 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
    • G06K13/20—Details
    • G06K13/22—Capstans; Pinch rollers
    • 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
    • G06K13/28—Winding-up or unwinding of record carriers; Driving of record carriers continuously
    • 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
    • G11B15/60—Guiding record carrier
    • G11B15/62—Maintaining desired spacing between record carrier and head
    • 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
    • G11B15/62—Maintaining desired spacing between record carrier and head
    • G11B15/64—Maintaining desired spacing between record carrier and head by fluid-dynamic spacing
    • 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
    • G11B15/675—Guiding containers, e.g. loading, ejecting cassettes
    • G11B15/68—Automatic cassette changing arrangements; automatic tape changing arrangements
    • G11B15/6895—Automatic tape changing arrangements
    • 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
    • G11B23/12—Bins for random storage of webs or filaments
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum

Definitions

  • the present invention relates to band driving arrangements, and particularly but not exclusively to magnetic storage device using such driving arrangements.
  • An object of the invention is to provide a magnetic storage device which is inexpensive to construct and which will carry more information per unit weight than magnetic storage devices heretofore used.
  • Another object of the invention is to provide a driving arrangement for a magnetic storage device which is simple and requires less accuracy in manufacture.
  • Still another object of the invention is to provide a pneumatic driving larrangement for driving a thin baud past a stationary object.
  • a magnetic storage arrangement comprising a member having a surface of magnetizable material, and means for driving said member pasta stationary object, characterised in this, that said driving means comprises means for directing ⁇ a liow of gas against a surface of said member in a direction which will produce a component of force in the desired direction of movement of said member whereby said member is driven in the desired direction and maintained spaced from said ow directing means.
  • a magnetic storage arrangement comprising a member having a surface of magnetizable material, and means for driving said member pasta lstationary object, characterised in this that said driving means comprises means for producing a plurality of jets of 'a gas and for directing each of said jets against a surface of said member in a direction which will produce a component of force in the desired direction of movement of said member, whereby said member is driven in the desired direction and maintained spaced from said jet producing land directing means.
  • a band driving arrangement comprising la reservoir adapted to contain gas under pressure, and means adapted to guide a band in close proximity to 'a surface of said reservoir, said surface of said reservoir having at least one duct leading from the interior through which the gas is forced in such a direction as to maintain said band spaced from said lsurface and create a component of force in the plane of said band which will move said band past said surface.
  • Fig. 1 is a cross-sectional View of one embodiment of the invention showing a cylindrical magnetic drum formed by a thin endless band;
  • Fig. 2 is a side view of the driving arrangement of the drum of Fig. 1;
  • Fig. 3 is a pneumatic driving arrangement for mag- Mice 2 netic tape, .e. for a band which might well be nonendless.
  • Fig. 4 is an alternative form of magnetic recording medium with pneumatic drive.
  • Figs. 1 and 2 show a simple magnetic drum embodying the invention.
  • the recording medium is a cylinder 1, formed by 'a exible band of plastic which carries a film of magnetic material.
  • the edges of this plastic band are preferably fastened together in Ian edge-on manner analogous to butt-welding.
  • This band is fitted 'around a hollow cylinder 2 of some suitable metal, such as brass, which is drilled with holes, such as 3 and 4, at an angle to the radii of the cylinder in a plane perpendicular to the axis thereof.
  • the cylinder 2 is mounted rigidly between two end plates 5 and 6, one of which can be removed readily, for example by undoing one or more bolts or nuts. Compressed air is fed to the inside of the cylinder 2 by 1a pipe 7, 'and this air leaves the cylinder 2 by the holes, such .as 3 and 4.
  • each head is mounted in close proximity to the recording surface.
  • a preferred arrangement is for each head to be lightly spring-biased towards the recording surface, and to be held away from the surface by a jet of compressed air mounted on the head and directed against the recording surface. Adjustment of the pressure of this jet is effected until the required headrecording medium clearance is obtained.
  • other methods of mounting the heads can be adopted.
  • the space between head and drum must be maintained as small and 'as constant as possible in order to obtain a high density of information on the surface and a constant output.
  • the head must never touch the drum, lest it damage itself or the surface.
  • the necessity for maintaining this constant clearancc by normal engineering methods drives the designer to use large bearings and high density stress-free materials, the result being that the drum is not only expensive to manufacture but also very heavy and large in relation to the quantity of storage medium involved. For example, a medium-sized drum weighs about 11/2 hundredweight and uses a few ounces of magnetic coating.
  • Fig. 3 shows the application of the pneumatic drive principle t-o a magnetic tape 10.
  • This tape passes between a reservoir 11 and two reservoirs 12 and 13. Holes, acting as ducts, such as 14, 15 and 16, slanted in the desired drive direction are provided.
  • the air With the compressed air feed, the air, of course leaves the reservoirs in the direction indicated 'by the larrows, so that the tape is driven from right to left.
  • the tape may be stopped by changing the air liow from compression to suction in either the lower reservoir 11 or the upper reservoirs 12 and 13. These latter could therefore be parts of a single reservoir.
  • the head is mounted in the space 17 between reservoirs 12 and 13.
  • a number of heads such as that indicated dia- ⁇ gramrn'atically at 23 are provided adjacent to the band 22. At this point the band preferably passes over a fixed solid surface, not shown. As indicated by the pipe 24, the heads each have an air jet provided, 'and they are lightly tensioned against the band 22, the jets setting the head band clearances.
  • a magnetic storage arrangement comprising a stationary cylindrical reservoir adapted to be lled with gas under pressure and provided with a plurality of small holes substantially equidistantly spaced around the circumference thereof and extending through the wall of the reservoir 'at substantially the same angle with respect to radii of said reservoir for producing jets 'as the gas is forced through them under pressure, a thin band of lightweight material having a magnetizable surface around said reservoir, said band being formed int-o an endless loop slightly longer than the circumference of said reservoir so as to lit loosely therearound, whereby said band is driven around said reservoir in the direction of s'aid jets and is maintained out-of-contact with said reservoir by the gas, and means for limiting laxial movement of said band with respect to said reservoir.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Replacement Of Web Rolls (AREA)
  • Automatic Tape Cassette Changers (AREA)
  • Advancing Webs (AREA)
US443398A 1953-08-14 1954-07-14 Driving arrangements Expired - Lifetime US2883475A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2249053A GB744197A (en) 1955-12-30 1953-08-14 Improvements in or relating to band driving arrangements
GB3741855A GB813792A (en) 1955-12-30 Improvements in or relating to record tape containers

Publications (1)

Publication Number Publication Date
US2883475A true US2883475A (en) 1959-04-21

Family

ID=32395994

Family Applications (2)

Application Number Title Priority Date Filing Date
US443398A Expired - Lifetime US2883475A (en) 1953-08-14 1954-07-14 Driving arrangements
US628148A Expired - Lifetime US2979244A (en) 1953-08-14 1956-12-13 Record tape assembly and magazine therefor

Family Applications After (1)

Application Number Title Priority Date Filing Date
US628148A Expired - Lifetime US2979244A (en) 1953-08-14 1956-12-13 Record tape assembly and magazine therefor

Country Status (8)

Country Link
US (2) US2883475A (es)
BE (2) BE551983A (es)
CH (1) CH353924A (es)
DE (1) DE1101025B (es)
FR (2) FR1106477A (es)
IN (1) IN59246B (es)
NL (1) NL212698A (es)
ZA (1) ZA4105B (es)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947489A (en) * 1953-12-29 1960-08-02 Owens Corning Fiberglass Corp High speed winding collet
US3029416A (en) * 1957-12-30 1962-04-10 Ibm High speed magnetic drum
US3032246A (en) * 1957-10-18 1962-05-01 Sperry Rand Corp Tape guide
US3036304A (en) * 1958-08-20 1962-05-22 Ibm Resilient magnetic drum
US3063041A (en) * 1958-08-19 1962-11-06 Ibm High speed reaction drum
US3107346A (en) * 1957-11-04 1963-10-15 Ibm Data storage apparatus
US3110431A (en) * 1960-10-27 1963-11-12 Potter Instrument Co Inc Tape loop handler with air support
US3155977A (en) * 1959-08-31 1964-11-03 Ibm Resilient recording disk
US3181166A (en) * 1957-12-02 1965-04-27 Rca Corp Data storage apparatus
US3192845A (en) * 1962-03-27 1965-07-06 Houston Schmidt Ltd Apparatus for transporting film strips on a fluid cushion
US3281039A (en) * 1965-02-18 1966-10-25 Potter Instrument Co Inc Endless magnetic tape loop and processing apparatus
US3283084A (en) * 1962-05-17 1966-11-01 Rca Corp Fluid supported apparatus
US3472436A (en) * 1965-12-07 1969-10-14 Vyzk Ustav Matemat Stroju Low friction data tape unit
US3715521A (en) * 1971-08-24 1973-02-06 Ambac Ind Recorder apparatus using fluid support
US4322026A (en) * 1980-04-14 1982-03-30 Young Engineering, Inc. Method and apparatus for controlling a moving web
US4395035A (en) * 1980-12-24 1983-07-26 International Business Machines Corporation Air shingler
US4817843A (en) * 1987-11-23 1989-04-04 Toray Industries, Inc. Suction device for yarn-threading
US5525751A (en) * 1993-09-28 1996-06-11 Monsanto Company System for moving a submerged web

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555245A (en) * 1954-07-28 1971-01-12 Jerome H Lemelson Tape cartridge and reader
USRE28461F1 (en) * 1954-07-28 1992-02-25 Jerome H Lemelson Tape cartridge and reader
US3329942A (en) * 1958-01-29 1967-07-04 Rca Corp Air bearing data storage apparatus
US3032287A (en) * 1958-11-04 1962-05-01 Epsylon Res & Dev Co Ltd Magnetic tape recorders
US3193608A (en) * 1959-12-21 1965-07-06 Anthony A Bobis Basic rhythm device
GB916740A (en) * 1961-11-15 1963-01-30 Creed & Co Ltd Improvements in tape storage apparatus
US3185400A (en) * 1961-12-28 1965-05-25 Ampex Tape slack device
US3169686A (en) * 1962-12-14 1965-02-16 Control Data Corp Magnetic tape data storage device
US3237951A (en) * 1963-04-08 1966-03-01 Tel A Dex Corp Magnetic tape information system
US3281042A (en) * 1964-08-31 1966-10-25 Cons Electrodynamics Corp Continuous loop tape storage apparatus
US3493948A (en) * 1966-01-21 1970-02-03 Dasa Corp Tape loop storage device
US3623775A (en) * 1970-06-30 1971-11-30 Ibm Loading and unloading an endless web in a cartridge
US3661309A (en) * 1970-06-30 1972-05-09 Ibm Loading and unloading an endless web in a cartridge
DE2203715A1 (de) * 1972-01-27 1973-08-02 Morat Gmbh Franz Behaelter zur aufnahme von endlosen, bandfoermigen materialien
US4128198A (en) * 1976-02-02 1978-12-05 Woodley George M Endless tape loop storage apparatus
US4110758A (en) * 1976-12-22 1978-08-29 Addressograph Multigraph Corporation High quality printing system with constant intermittent tape drive
US4199766A (en) * 1977-02-28 1980-04-22 Xerox Corporation Random-dump storage buffer for moving web
JPS53120534A (en) * 1977-03-28 1978-10-21 Xerox Corp Storage buffer for use in moving web
US4394951A (en) * 1982-01-19 1983-07-26 Rca Corporation Active tape storage bin
JPH0622057B2 (ja) * 1986-12-24 1994-03-23 小谷電機株式会社 テ−プ走行装置
US4814899A (en) * 1987-09-21 1989-03-21 Otari Electric Company, Ltd. Tape transporting device
JPH01137451A (ja) * 1987-11-24 1989-05-30 Otani Denki Kk テープ収容装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1161346A (en) * 1912-05-09 1915-11-23 Hoe & Co R Directing and advancing device for paper-handling machines.
US2037806A (en) * 1933-04-08 1936-04-21 Hoe & Co R Paper and web handling mechanism for printing machines
US2043788A (en) * 1934-04-07 1936-06-09 Clark W Adair Rotary steam friction motor
US2253005A (en) * 1940-06-10 1941-08-19 William F Wittich Rotary fluid pressure engine
US2542506A (en) * 1948-09-13 1951-02-20 Jefferson C Gibson Magnetic recorder utilizing an endless record web
US2612566A (en) * 1951-06-05 1952-09-30 Bell Telephone Labor Inc Magnetic recording and reproducing system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US284323A (en) * 1883-09-04 Delivery apparatus for machines for finishing fabrics
DE564538C (de) * 1928-09-26 1932-11-19 Telegraphie Patent Syndikat G Wiedergabemagnetsystem fuer magnetische Tonaufzeichnungen auf Stahldraht
US1883987A (en) * 1929-05-11 1932-10-25 Lasowsky Louis Moving picture camera
US1873057A (en) * 1930-08-20 1932-08-23 Package Machinery Co Paper registering device
FR717795A (fr) * 1930-09-26 1932-01-14 Dispositif pour le déroulement continu d'un film sans fin et son application à l'enregistrement et à la reproduction des sons
US2180601A (en) * 1937-12-27 1939-11-21 Nat Automotive Fibres Inc Accumulating conveyer
US2377896A (en) * 1939-08-25 1945-06-12 Katherine M Sherman Carbon separator
US2419012A (en) * 1945-09-15 1947-04-15 Aero Metal Products Corp Ticket machine
US2808259A (en) * 1953-06-10 1957-10-01 Eastman Kodak Co Continuous film loop holder for repeating projectors
US2867435A (en) * 1953-09-03 1959-01-06 Gen Dynamics Corp Recorder
NL255306A (es) * 1953-10-15

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1161346A (en) * 1912-05-09 1915-11-23 Hoe & Co R Directing and advancing device for paper-handling machines.
US2037806A (en) * 1933-04-08 1936-04-21 Hoe & Co R Paper and web handling mechanism for printing machines
US2043788A (en) * 1934-04-07 1936-06-09 Clark W Adair Rotary steam friction motor
US2253005A (en) * 1940-06-10 1941-08-19 William F Wittich Rotary fluid pressure engine
US2542506A (en) * 1948-09-13 1951-02-20 Jefferson C Gibson Magnetic recorder utilizing an endless record web
US2612566A (en) * 1951-06-05 1952-09-30 Bell Telephone Labor Inc Magnetic recording and reproducing system

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947489A (en) * 1953-12-29 1960-08-02 Owens Corning Fiberglass Corp High speed winding collet
US3032246A (en) * 1957-10-18 1962-05-01 Sperry Rand Corp Tape guide
US3107346A (en) * 1957-11-04 1963-10-15 Ibm Data storage apparatus
US3181166A (en) * 1957-12-02 1965-04-27 Rca Corp Data storage apparatus
US3029416A (en) * 1957-12-30 1962-04-10 Ibm High speed magnetic drum
US3063041A (en) * 1958-08-19 1962-11-06 Ibm High speed reaction drum
US3036304A (en) * 1958-08-20 1962-05-22 Ibm Resilient magnetic drum
US3155977A (en) * 1959-08-31 1964-11-03 Ibm Resilient recording disk
US3110431A (en) * 1960-10-27 1963-11-12 Potter Instrument Co Inc Tape loop handler with air support
US3192845A (en) * 1962-03-27 1965-07-06 Houston Schmidt Ltd Apparatus for transporting film strips on a fluid cushion
US3283084A (en) * 1962-05-17 1966-11-01 Rca Corp Fluid supported apparatus
US3281039A (en) * 1965-02-18 1966-10-25 Potter Instrument Co Inc Endless magnetic tape loop and processing apparatus
US3472436A (en) * 1965-12-07 1969-10-14 Vyzk Ustav Matemat Stroju Low friction data tape unit
US3715521A (en) * 1971-08-24 1973-02-06 Ambac Ind Recorder apparatus using fluid support
US4322026A (en) * 1980-04-14 1982-03-30 Young Engineering, Inc. Method and apparatus for controlling a moving web
US4395035A (en) * 1980-12-24 1983-07-26 International Business Machines Corporation Air shingler
US4817843A (en) * 1987-11-23 1989-04-04 Toray Industries, Inc. Suction device for yarn-threading
US5525751A (en) * 1993-09-28 1996-06-11 Monsanto Company System for moving a submerged web

Also Published As

Publication number Publication date
NL212698A (es)
CH353924A (de) 1961-04-30
BE553765A (es) 1960-01-29
US2979244A (en) 1961-04-11
FR1106477A (fr) 1955-12-19
ZA4105B (es)
FR71628E (fr) 1960-01-13
DE1101025B (de) 1961-03-02
IN59246B (es)
BE551983A (es) 1959-12-31

Similar Documents

Publication Publication Date Title
US2883475A (en) Driving arrangements
US2612566A (en) Magnetic recording and reproducing system
GB882250A (en) Improvements in data storage devices
JPS60140722A (ja) 精密移動装置
US3268877A (en) Floating magnetic transducing head
US4422086A (en) Device for feeding constant pressure fluid
US20060007596A1 (en) Method for supporting a tape head assembly on an air cushion
US3143267A (en) Tape handling device
US2962200A (en) Guiding means for a magnetic tape
US3156398A (en) Tape handling apparatus
US3867725A (en) Rotating head apparatus including a thrust gas bearing
US2852253A (en) Pneumatic tape drive
US3075679A (en) Web feeding device
US3633807A (en) Magnetic tape bin
US4705199A (en) Vacuum drum for securing a film thereto
GB1515739A (en) Air guide apparatus for tape transports
US3106355A (en) Apparatus for handling and storing strip media
CA1038488A (en) Stabilization of partitionable memory with flexible rotating discs
CN209578943U (zh) 超精密高频响双行程快刀伺服加工装置
US3189240A (en) Drive systems
US2996948A (en) Sound recording and reproducing apparatus utilizing perforated magnetic tape
US4037767A (en) Tape transporting apparatus
GB763815A (en) Improved gas-stabilised head for recording apparatus and the like
US2991921A (en) Tape guide for magnetic tape recorder
US3523350A (en) Wind tunnel fabrication method