GB745563A - Improvements relating to electrical timing apparatus - Google Patents

Improvements relating to electrical timing apparatus

Info

Publication number
GB745563A
GB745563A GB1978553A GB1978553A GB745563A GB 745563 A GB745563 A GB 745563A GB 1978553 A GB1978553 A GB 1978553A GB 1978553 A GB1978553 A GB 1978553A GB 745563 A GB745563 A GB 745563A
Authority
GB
United Kingdom
Prior art keywords
pick
record
arm
contacts
indentations
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
GB1978553A
Inventor
Frank Grenville Haynes
Michael Barnard Coyle
Peter Henry Dawson
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB1978553A priority Critical patent/GB745563A/en
Publication of GB745563A publication Critical patent/GB745563A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/10—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed

Landscapes

  • Recording Measured Values (AREA)

Abstract

745,563. Stencil switches. METROPOLITAN-VICKERS ELECTRICAL CO.. Ltd. July 16, 1954 [July 16, 1953], No. 19785/53. Class 38(5) A switch for producing a series of electric impulses comprises a rotatable record surface provided with a number of indentations at selected intervals along a path on said surface, and a mechanical pick-up device adapted to actuate contacts to produce an impulse each time the pickup meets an indentation. As shown, the pick-up 7 is carried by an arm 8 pivoted and slidable on a rod 5 and having a "half-nut" 13 engaging a lead screw 14 so that the pick-up may be moved radially across the record surface 1, this movement combined with the rotation of the record causing the pickup to move along a spiral path over the record. The indentations are formed by holes 25 and the pick-up has a pointed stylus 18 mounted on a spring 19 supporting a contact-carrying arm 20. The pick-up is supported by a further member resting on the record surface so as to cause relative movement between the stylus and the pick-up when a hole 25 is engaged, silver contacts 21 22 thereby being closed momentarily. The half-nut 13 enables the arm 8 to be raised to free the pick-up from the screw 14 during resetting. The contacts may be normally closed and the pulses may be used to energize an electromagnet ratchet motor to drive a recording chart.
GB1978553A 1953-07-16 1953-07-16 Improvements relating to electrical timing apparatus Expired GB745563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1978553A GB745563A (en) 1953-07-16 1953-07-16 Improvements relating to electrical timing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1978553A GB745563A (en) 1953-07-16 1953-07-16 Improvements relating to electrical timing apparatus

Publications (1)

Publication Number Publication Date
GB745563A true GB745563A (en) 1956-02-29

Family

ID=10135183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1978553A Expired GB745563A (en) 1953-07-16 1953-07-16 Improvements relating to electrical timing apparatus

Country Status (1)

Country Link
GB (1) GB745563A (en)

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