GB1056713A - Moving scale instrument - Google Patents

Moving scale instrument

Info

Publication number
GB1056713A
GB1056713A GB3856864A GB3856864A GB1056713A GB 1056713 A GB1056713 A GB 1056713A GB 3856864 A GB3856864 A GB 3856864A GB 3856864 A GB3856864 A GB 3856864A GB 1056713 A GB1056713 A GB 1056713A
Authority
GB
United Kingdom
Prior art keywords
tape
runs
sets
indicator
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
GB3856864A
Inventor
William Charles Mongar
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.)
Sperry Gyroscope Co Ltd
Original Assignee
Sperry Gyroscope 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 Sperry Gyroscope Co Ltd filed Critical Sperry Gyroscope Co Ltd
Priority to GB3856864A priority Critical patent/GB1056713A/en
Publication of GB1056713A publication Critical patent/GB1056713A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28—Structurally-combined illuminating devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

1, 056,713. Indicating-apparatus. SPERRY GYROSCOPE CO. Ltd. Sept. 22, 1965 [Sept. 22, 1964], No. 38568/64. Heading G1J. The moving scale of a compass repeater comprises an endless flexible tape 17 of plastics material guided by two sets of five aluminium alloy pulleys 12 to 16 and 12<SP>1</SP> to 16<SP>1</SP> to form two sets of runs respectively adjacent opposite sides of a base 11 and linked by two runs adjacent one end whereby the area between the two sets is free to house an A. C. motor 22, amplifier 24 and fine and coarse synchros 21, 20. A master compass applies signals to the stators of the synchros whose rotors apply error signals through the amplifier 24 to the motor 22. The motor 22 rotates the rotor of the coarse synchro and also gears which drive the rotor of the fine synchro and the pulley 16 which is toothed to drive the tape 17. The arrangement is thus a null-seeking servo system wherein the tape and rotors are driven until the error signal becomes zero. A switch is provided to disconnect the master compass and apply a voltage to set the repeater to read zero, whereupon the pulley 16 can be locked, the main fuse removed and the tape renewed. A limb 26 of an "L" section sheet of transparent plastics material is inserted between the tape runs 12, 16 and 15, 13, its back surface is sandblasted so that when edge lit from light sources, transparent graduation marks on the front run of tape can be read against a stationary indicator. In another embodiment the indicator may be a transparent plastics rod with one side whitened. A sheet of translucent plastics between runs incorporates three miniature lamps in its lower half which illuminate the graduations through red filters while the centre lamp only directs some clear light on to the indicator so that it appears white.
GB3856864A 1964-09-22 1964-09-22 Moving scale instrument Expired GB1056713A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3856864A GB1056713A (en) 1964-09-22 1964-09-22 Moving scale instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3856864A GB1056713A (en) 1964-09-22 1964-09-22 Moving scale instrument

Publications (1)

Publication Number Publication Date
GB1056713A true GB1056713A (en) 1967-01-25

Family

ID=10404323

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3856864A Expired GB1056713A (en) 1964-09-22 1964-09-22 Moving scale instrument

Country Status (1)

Country Link
GB (1) GB1056713A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144223A (en) * 1983-07-29 1985-02-27 Ronald Henry Parfitt Instrument scale arrangements
USD1024674S1 (en) * 2019-06-04 2024-04-30 Toddy, Llc Filter basket for immersion coffee or tea brewing and cupping

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144223A (en) * 1983-07-29 1985-02-27 Ronald Henry Parfitt Instrument scale arrangements
USD1024674S1 (en) * 2019-06-04 2024-04-30 Toddy, Llc Filter basket for immersion coffee or tea brewing and cupping

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