GB784872A - Improvements in transducers for magnetic reproducing and/or recording apparatus - Google Patents

Improvements in transducers for magnetic reproducing and/or recording apparatus

Info

Publication number
GB784872A
GB784872A GB3341/55A GB334155A GB784872A GB 784872 A GB784872 A GB 784872A GB 3341/55 A GB3341/55 A GB 3341/55A GB 334155 A GB334155 A GB 334155A GB 784872 A GB784872 A GB 784872A
Authority
GB
United Kingdom
Prior art keywords
core
mounting
resilient means
drum
winding
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
GB3341/55A
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 Business Machines Corp
Original Assignee
International Business Machines 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
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB784872A publication Critical patent/GB784872A/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
    • 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
    • G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface
    • 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
    • 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
    • G11B5/488—Disposition of heads
    • 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
    • G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

784,872. Magnetic recording and/or reproducing transducers. INTERNATIONAL BUSINESS MACHINES CORPORATION. Feb. 4, 1955 [Feb. 9, 1954], No. 3341/55. Class 40 (2). A magnetic recording and/or reproducing apparatus transducer comprises a mounting 10 in which is secured a winding 20 and to which is so pivotally attached a magnetic core 14, 15 that it is movable to a limited extent through the winding 20, resilient means arranged to urge the core in one direction relative to the mounting, and means for adjusting the position of the core relative to that of its mounting by moving in the opposite direction against the urging of the resilient means or permitting movement by the resilient means in the one direction. As shown, the resilient means comprises a compression spring 19 and the adjusting means comprises a screw-threaded cam-rod 18 whose tip 18a coacts with a stud 17 carried by the core to rock the core about its pivot pin 13. The mounting is of plastic material, carries leads 21 from winding terminals 22, has slotted ears 11 by which it may be adjustably secured in position, and has its centre line offset from the air gap 16 of the core so that by shifting the entire assembly by 180 degrees about its vertical centre line there is obtained a recording and/or reproducing time shift. The core pole tips may be honed on a magnetic drum with which the core is to operate, to provide a concave surface which corresponds with that of the drum, and proceedures for setting the gap between the transducr and the drum are described.
GB3341/55A 1954-02-09 1955-02-04 Improvements in transducers for magnetic reproducing and/or recording apparatus Expired GB784872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US338623XA 1954-02-09 1954-02-09

Publications (1)

Publication Number Publication Date
GB784872A true GB784872A (en) 1957-10-16

Family

ID=21872884

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3341/55A Expired GB784872A (en) 1954-02-09 1955-02-04 Improvements in transducers for magnetic reproducing and/or recording apparatus

Country Status (4)

Country Link
CH (1) CH338623A (en)
FR (1) FR1141866A (en)
GB (1) GB784872A (en)
NL (2) NL194272A (en)

Also Published As

Publication number Publication date
NL101509C (en)
CH338623A (en) 1959-05-31
FR1141866A (en) 1957-09-11
NL194272A (en)

Similar Documents

Publication Publication Date Title
US2680785A (en) Sound head mounting
GB763780A (en)
GB552675A (en) Improvements in or relating to apparatus for measuring or indicating the shape of a surface or the degree of roughness thereof
US2606093A (en) Recording apparatus
US2695211A (en) Recording accelerometer
GB699885A (en) Magnetic transducer head and method of making same
GB784872A (en) Improvements in transducers for magnetic reproducing and/or recording apparatus
US2647755A (en) Adjustment providing electromagnetic head mount
US2416082A (en) Humless electrodynamic pickup
GB610315A (en) Improvements in or relating to instruments for the measurement of surface finish
GB794974A (en) Improvements in or relating to mounting arrangements for magnetic transducing heads in magnetic recording or reproducing apparatus
GB844632A (en) Improvements in transducer components
US2814549A (en) Rectilinear recording
GB981990A (en) Recording thermometer
GB700155A (en) Phonographic pick-up
GB549987A (en) Improvements in or relating to the measurement of surface roughness
GB827581A (en) Improvements in and relating to gramophone pickups
GB702642A (en) Improvements in and relating to electromagnetic head mounts
GB756172A (en) Improvements relating to the mounting of magnetic recording or reproducing heads for film sound apparatus
GB651432A (en) Improvements in or relating to electromagnetic pick-ups
GB758483A (en) Improvements in or relating to recording devices for use in seismic prospecting
GB759196A (en) Method and apparatus for measuring thickness
GB1249775A (en) Sound reproducing apparatus
JPS5546613A (en) Pickup cartridge
GB822642A (en) Improvements in and relating to gramophone pickups