GB745055A - Improvements in or relating to control mechanism - Google Patents

Improvements in or relating to control mechanism

Info

Publication number
GB745055A
GB745055A GB27920/52A GB2792052A GB745055A GB 745055 A GB745055 A GB 745055A GB 27920/52 A GB27920/52 A GB 27920/52A GB 2792052 A GB2792052 A GB 2792052A GB 745055 A GB745055 A GB 745055A
Authority
GB
United Kingdom
Prior art keywords
shaft
worm
spring
contact
electric motor
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
GB27920/52A
Inventor
Herbert Edward Holman
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB27920/52A priority Critical patent/GB745055A/en
Publication of GB745055A publication Critical patent/GB745055A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H33/00—Gearings based on repeated accumulation and delivery of energy
    • F16H33/02—Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G17/00—Mechanical devices for moving a member after being released; Trip or release mechanisms characterised thereby
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2706/00—Rotary transmissions with mechanical energy accumulation and recovery without means for automatic selfregulation essentially based on spring action or inertia

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Lens Barrels (AREA)
  • Gear Transmission (AREA)

Abstract

745,055. Control of motors. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Oct. 30, 1953 [Nov. 6, 1952], No. 27920/52. Class 38(3) [Also in Groups XX, XXIV and XXVI] A servo mechanism intended particularly for operating parts in television cameras, e.g. varying the diameter of the iris or rotating the lens turret, comprises a driving shaft 8 rotated by a spring in a rotatable housing 22 provided with a worm gear 23 meshed by a worm 24 on an axially movable shaft 25 driven by an electric motor 26. A compression spring 28 biases the shaft 25 to the right of the Figure to close a contact 29 in the circuit of the electric motor 26. When the spring in the housing 22 is fully wound, the worm 24 screws along the worm gear 23 to the left of the Figure, carrying the shaft 25 with it, and thus opens the contact 29 and stops the motor 26.
GB27920/52A 1952-11-06 1952-11-06 Improvements in or relating to control mechanism Expired GB745055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB27920/52A GB745055A (en) 1952-11-06 1952-11-06 Improvements in or relating to control mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27920/52A GB745055A (en) 1952-11-06 1952-11-06 Improvements in or relating to control mechanism

Publications (1)

Publication Number Publication Date
GB745055A true GB745055A (en) 1956-02-22

Family

ID=10267419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27920/52A Expired GB745055A (en) 1952-11-06 1952-11-06 Improvements in or relating to control mechanism

Country Status (1)

Country Link
GB (1) GB745055A (en)

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