GB454931A - Improvements in altimeters for use in aircraft - Google Patents

Improvements in altimeters for use in aircraft

Info

Publication number
GB454931A
GB454931A GB1068735A GB1068735A GB454931A GB 454931 A GB454931 A GB 454931A GB 1068735 A GB1068735 A GB 1068735A GB 1068735 A GB1068735 A GB 1068735A GB 454931 A GB454931 A GB 454931A
Authority
GB
United Kingdom
Prior art keywords
contact
pointer
transformer
balance
flip
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
GB1068735A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1068735A priority Critical patent/GB454931A/en
Publication of GB454931A publication Critical patent/GB454931A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Details Of Measuring Devices (AREA)

Abstract

454,931. Altimeters. WRIGHT, G. M., Broom Hall, Woodham Ferris, Essex. April 6, 1935, No. 10687. [Class 106 (ii)] A boss 3 on the evacuated capsule 1 is provided with a contact 4 working between contacts 5, 6 on the frame 2 the contacts 4, 6 being connected in circuit with a battery 13 and the primary of a transformer 12. The secondary of the transformer is in circuit with a neon lamp 14 adapted to illuminate a scale 11 over which moves a pointer 10. Attached to the spindle 8 of the pointer is a flat spring 7 the other end of which is pivoted to the boss 3. The spindle 8 is rocked constantly so that the pointer oscillates between the highest reading on the scale and zero the contact 4 just touching the contact 5 and 6 in these positions. During every oscillation, the force exerted by the spring 7 will just balance the force exerted by the atmospheric pressure at some point during its movement and immediately after this balance, the contact 4 will flip suddenly from the contact which it is engaging to the other contact there to remain until balance is achieved in the next oscillation when it will flip back. This flip causes a sudden momentary current to pass through the primary of the transformer and therefore a momentary current will be induced in the secondary causing the Neon lamp to strike and illuminate the needle.
GB1068735A 1935-04-06 1935-04-06 Improvements in altimeters for use in aircraft Expired GB454931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1068735A GB454931A (en) 1935-04-06 1935-04-06 Improvements in altimeters for use in aircraft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1068735A GB454931A (en) 1935-04-06 1935-04-06 Improvements in altimeters for use in aircraft

Publications (1)

Publication Number Publication Date
GB454931A true GB454931A (en) 1936-10-06

Family

ID=9972429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1068735A Expired GB454931A (en) 1935-04-06 1935-04-06 Improvements in altimeters for use in aircraft

Country Status (1)

Country Link
GB (1) GB454931A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485783A (en) * 1946-04-25 1949-10-25 Bendix Aviat Corp Pressure switch
US2522596A (en) * 1946-04-25 1950-09-19 Bendix Aviat Corp Altitude switch
DE1247697B (en) * 1962-11-06 1967-08-17 Appleby & Ireland Ltd Aneroid barometer
US4327583A (en) * 1980-05-07 1982-05-04 Fujiya Kabushiki Kaisha Weather forecasting device
US5686664A (en) * 1996-06-26 1997-11-11 Pearcy; Lee R. Atmospheric tide and air density detector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485783A (en) * 1946-04-25 1949-10-25 Bendix Aviat Corp Pressure switch
US2522596A (en) * 1946-04-25 1950-09-19 Bendix Aviat Corp Altitude switch
DE1247697B (en) * 1962-11-06 1967-08-17 Appleby & Ireland Ltd Aneroid barometer
US4327583A (en) * 1980-05-07 1982-05-04 Fujiya Kabushiki Kaisha Weather forecasting device
US5686664A (en) * 1996-06-26 1997-11-11 Pearcy; Lee R. Atmospheric tide and air density detector

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