GB479075A - A speed indicator - Google Patents

A speed indicator

Info

Publication number
GB479075A
GB479075A GB2191136A GB2191136A GB479075A GB 479075 A GB479075 A GB 479075A GB 2191136 A GB2191136 A GB 2191136A GB 2191136 A GB2191136 A GB 2191136A GB 479075 A GB479075 A GB 479075A
Authority
GB
United Kingdom
Prior art keywords
byepass
bulb
fitted
tube
different lengths
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
GB2191136A
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 GB2191136A priority Critical patent/GB479075A/en
Publication of GB479075A publication Critical patent/GB479075A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Road Repair (AREA)

Abstract

479,075. Sandglasses. LOW, A. M. Aug. 8, 1936, No. 21911.' [Class 139] For use by a stationary observer for indicating the lap speed of a travelling object on race tracks of different lengths, an hour-glass type of instrument is used having a casing provided with a plurality of speed scales, corresponding to track circuits of different lengths. A granular or liquid medium falls from a bulb A through a constricted passage B into a tube C, fitted with the said casing. A byepass H is provided for returning the sand &c. quickly to the bulb A. The byepass may connect with the bottom of the tube C, and it may be fitted with a non-return valve.
GB2191136A 1936-08-08 1936-08-08 A speed indicator Expired GB479075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2191136A GB479075A (en) 1936-08-08 1936-08-08 A speed indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2191136A GB479075A (en) 1936-08-08 1936-08-08 A speed indicator

Publications (1)

Publication Number Publication Date
GB479075A true GB479075A (en) 1938-01-31

Family

ID=10170866

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2191136A Expired GB479075A (en) 1936-08-08 1936-08-08 A speed indicator

Country Status (1)

Country Link
GB (1) GB479075A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847067A (en) * 1955-09-01 1958-08-12 Hynson Westcott & Dunning Inc Sterilization indicator
US4408894A (en) * 1982-04-09 1983-10-11 Hemperly Richard E Multiple selectable timer
US5068839A (en) * 1987-07-16 1991-11-26 Neil Lawrence Resettable sandglass-type timing device which provides selective timing periods

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847067A (en) * 1955-09-01 1958-08-12 Hynson Westcott & Dunning Inc Sterilization indicator
US4408894A (en) * 1982-04-09 1983-10-11 Hemperly Richard E Multiple selectable timer
US5068839A (en) * 1987-07-16 1991-11-26 Neil Lawrence Resettable sandglass-type timing device which provides selective timing periods

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