GB834462A - Improvements in indicating instruments - Google Patents

Improvements in indicating instruments

Info

Publication number
GB834462A
GB834462A GB595457A GB595457A GB834462A GB 834462 A GB834462 A GB 834462A GB 595457 A GB595457 A GB 595457A GB 595457 A GB595457 A GB 595457A GB 834462 A GB834462 A GB 834462A
Authority
GB
United Kingdom
Prior art keywords
pointer
knob
disc
scale
positions
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
GB595457A
Inventor
Gordon Lorimer Mcwilliam
Alastair Michael Adai Majendie
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.)
S Smith and Sons Ltd
S Smith and Sons England Ltd
Original Assignee
S Smith and Sons Ltd
S Smith and Sons England 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 S Smith and Sons Ltd, S Smith and Sons England Ltd filed Critical S Smith and Sons Ltd
Priority to GB595457A priority Critical patent/GB834462A/en
Publication of GB834462A publication Critical patent/GB834462A/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
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/02—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means
    • G01D5/04—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means using levers; using cams; using gearing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Control Devices (AREA)

Abstract

834,462. Indicating-apparatus. SMITH & SONS (ENGLAND) Ltd., S. Feb. 21, 1958 [Feb. 21, 1957], No. 5954/57. Class 106 (4). An indicating-instrument with its movement 1 for moving a pointer 2 over a scale 11 in accordance with a variable is mounted in a housing 8 so as to be rotatably adjustable about the axis of the pointer 2 and an associated set-pointer 47 is independently adjustable about the same axis. The movement is mounted on a disc 4 integral with a disc 5 and cylindrical casing 10 which carries the scale 11. The disc 5 slides in an annular groove in a wall 7 of the housing 8 and the disc 4 carries a gearwheel 9 meshing with a gear-wheel 13 on a shaft 12 with a slot at the front for making the rotatable adjustment of the instrument. The set pointer 47 is carried by an arm 45 secured to a ring 16 integral with a further cylindrical casing 15 rotatable about the inner one 10. The pointer 47 can be set centrally on to a predetermined position either side by adjusting a knob 39 to one of three positions determined by a detent plate 40 co-operating with a ball 42. A crank-arm 43 turned by the knob 39 carries a pin 44 which is embraced by plates 32, 33, carried by rings 29, 30 rotatable on the casing 15 and interconnected by a spring 35 which causes the plates 32, 33 to follow the pin 44 and also to take along with them a pin 37 on the ring 16 at least to the limits determined by the radial end faces 20, 21 of a recess in the periphery of the ring 16. These faces 20, 21 co-operate with pins 22, 24 carried by annular gear-wheels 17, 18 which can be set in predetermined positions through gear-wheels 27, 28 on slotted shafts 26, 25. In a moving coil instrument used for measuring jet pipe temperatures on a turbine engined aircraft, where there are three critical temperatures to watch, namely the highest permitted in crusing, climbing and take-off, the knob 39 is set to intermediate position bringing the pointer 47 vertical and the shaft 12 is adjusted to turn the movement 1 and scale 11 to bring the scale division representing the highest temperature permitted, during climbing into register with the pointer 47, the other positions being set through the shafts 26, 25 when the knob 39 is set to its off-centre positions.
GB595457A 1957-02-21 1957-02-21 Improvements in indicating instruments Expired GB834462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB595457A GB834462A (en) 1957-02-21 1957-02-21 Improvements in indicating instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB595457A GB834462A (en) 1957-02-21 1957-02-21 Improvements in indicating instruments

Publications (1)

Publication Number Publication Date
GB834462A true GB834462A (en) 1960-05-11

Family

ID=9805751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB595457A Expired GB834462A (en) 1957-02-21 1957-02-21 Improvements in indicating instruments

Country Status (1)

Country Link
GB (1) GB834462A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189337A (en) * 1986-04-17 1987-10-21 Ronald Henry Parfitt Indicating and control instruments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189337A (en) * 1986-04-17 1987-10-21 Ronald Henry Parfitt Indicating and control instruments
GB2189337B (en) * 1986-04-17 1989-11-29 Ronald Henry Parfitt Indicating and control instruments

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