GB849934A - Improvements in and relating to pressure-operated gauges for controlling mercury switches - Google Patents

Improvements in and relating to pressure-operated gauges for controlling mercury switches

Info

Publication number
GB849934A
GB849934A GB3138657A GB3138657A GB849934A GB 849934 A GB849934 A GB 849934A GB 3138657 A GB3138657 A GB 3138657A GB 3138657 A GB3138657 A GB 3138657A GB 849934 A GB849934 A GB 849934A
Authority
GB
United Kingdom
Prior art keywords
switches
pinion
casing
arm
oct
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
GB3138657A
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.)
ARTHUR ROBERT NAPIER
W H Bramhall & Co Ltd
Original Assignee
ARTHUR ROBERT NAPIER
W H Bramhall & 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 ARTHUR ROBERT NAPIER, W H Bramhall & Co Ltd filed Critical ARTHUR ROBERT NAPIER
Priority to GB3138657A priority Critical patent/GB849934A/en
Publication of GB849934A publication Critical patent/GB849934A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/36—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by curled flexible tube, e.g. Bourdon tube

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

849,934. Thermal switches; fluid actuation of switches. BRAMALL & CO. Ltd., W. H. and NAPIER, A. R. Oct. 27, 1958 [Oct. 8, 1957], No. 31386/57. Class 38 (5). A switch-controlling pressure or temperatureresponsive gauge comprises a Bourdon tube 4a whose movement is transmitted through a spindle 7 to a pointer 6, and through an arm 8a and adjustment screw 8b to a slotted arm 8. Mercury switches 9 are secured to a hollow circular casing 14 having internal peripheral teeth which engage with a rotary pinion 15 mounted on a block 16. This block is rotatably mounted by ball-bearings 17 on a fixed member 10, through which passes a rotary spindle 11 having a pinion 13 engaging with the pinion 15, and an adjusting head 12 protruding through a dial 5. Normally springs 18 force the casing 14 into frictional engagement with the arm 8 so that movement of the Bourdon tube produces rotation of the casing and switches 9. This friction clutch effect can be overcome by rotating the head 12 to adjust the switches 9 to any desired position, after removal of the dial cover.
GB3138657A 1957-10-08 1957-10-08 Improvements in and relating to pressure-operated gauges for controlling mercury switches Expired GB849934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3138657A GB849934A (en) 1957-10-08 1957-10-08 Improvements in and relating to pressure-operated gauges for controlling mercury switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3138657A GB849934A (en) 1957-10-08 1957-10-08 Improvements in and relating to pressure-operated gauges for controlling mercury switches

Publications (1)

Publication Number Publication Date
GB849934A true GB849934A (en) 1960-09-28

Family

ID=10322313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3138657A Expired GB849934A (en) 1957-10-08 1957-10-08 Improvements in and relating to pressure-operated gauges for controlling mercury switches

Country Status (1)

Country Link
GB (1) GB849934A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191635A (en) * 1986-06-13 1987-12-16 Veglia Borletti Srl A manometer with a device for indicating insufficient pressure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191635A (en) * 1986-06-13 1987-12-16 Veglia Borletti Srl A manometer with a device for indicating insufficient pressure

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