GB985330A - Improvements in or relating to stroboscopes - Google Patents

Improvements in or relating to stroboscopes

Info

Publication number
GB985330A
GB985330A GB3131362A GB3131362A GB985330A GB 985330 A GB985330 A GB 985330A GB 3131362 A GB3131362 A GB 3131362A GB 3131362 A GB3131362 A GB 3131362A GB 985330 A GB985330 A GB 985330A
Authority
GB
United Kingdom
Prior art keywords
disc
tape
stroboscopes
engagement
stroboscopic
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
GB3131362A
Inventor
Frederick Edwin Aplin
Vivian John Teasdale
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Priority to GB3131362A priority Critical patent/GB985330A/en
Publication of GB985330A publication Critical patent/GB985330A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/40—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using stroboscopic 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
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/54—Controlling, regulating, or indicating speed by stroboscope; by tachometer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Pulleys (AREA)

Abstract

985, 330. Stroboscopes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Nov.15, 1963 [Aug. 15, 1962], No. 31313/62. Heading G1K. A stroboscope for checking the tape speed of a tape recorder comprises a drive pulley 4 adapted to be rotated by engagement of a portion of its periphery with the tape, and a stroboscopic disc 15 secured to a driven pulley 9 and resilient spring means 11, 14 for urging the two pulleys into frictional driving engagement. A window 17 is provided in the casing 2 for viewing the stroboscopic disc. The disc may carry concentric bands of striations suitably proportioned to indicate different speeds.
GB3131362A 1962-08-15 1962-08-15 Improvements in or relating to stroboscopes Expired GB985330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3131362A GB985330A (en) 1962-08-15 1962-08-15 Improvements in or relating to stroboscopes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3131362A GB985330A (en) 1962-08-15 1962-08-15 Improvements in or relating to stroboscopes

Publications (1)

Publication Number Publication Date
GB985330A true GB985330A (en) 1965-03-10

Family

ID=10321258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3131362A Expired GB985330A (en) 1962-08-15 1962-08-15 Improvements in or relating to stroboscopes

Country Status (1)

Country Link
GB (1) GB985330A (en)

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