GB515541A - Improvements in speed indicators - Google Patents

Improvements in speed indicators

Info

Publication number
GB515541A
GB515541A GB1665038A GB1665038A GB515541A GB 515541 A GB515541 A GB 515541A GB 1665038 A GB1665038 A GB 1665038A GB 1665038 A GB1665038 A GB 1665038A GB 515541 A GB515541 A GB 515541A
Authority
GB
United Kingdom
Prior art keywords
indicator
speed
wheel
drive
carriage
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
GB1665038A
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 GB1665038A priority Critical patent/GB515541A/en
Publication of GB515541A publication Critical patent/GB515541A/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
    • G01P3/02—Devices characterised by the use of mechanical means
    • G01P3/10—Devices characterised by the use of mechanical means by actuating an indicating element, e.g. pointer, for a fixed time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)

Abstract

515,541. Speedometers. HILL, H. W. June 3, 1938, No. 16650. [Class 106 (iii)] An instrument of the. type in which observations of a distant object are used to actuate a pointer so that it moves over a chart in a manner corresponding to the movements of the object, is modified for use as a speed indicator by connecting a carriage a to the pointer, the carriage running on a wheel b which drives an indicator through a friction gear c, means being provided for periodically breaking the drive between wheels b and c and restoring the indicator to zero when the drive is broken. In one construction the drive is broken by a clockworkdriven cam r which raises an arm d carrying the wheel c. The arm d can also be raised by a periodically energized electromagnet. The indicator is zeroized by a spring k connected to a chain coiled around the spindle of wheel c. The mechanism acts as a periodic counter speedometer which measures the speed of carriage a which is proportional to the speed of the distant object and the indicator may thus be calibrated to give the latter speed directly.
GB1665038A 1938-06-03 1938-06-03 Improvements in speed indicators Expired GB515541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1665038A GB515541A (en) 1938-06-03 1938-06-03 Improvements in speed indicators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1665038A GB515541A (en) 1938-06-03 1938-06-03 Improvements in speed indicators

Publications (1)

Publication Number Publication Date
GB515541A true GB515541A (en) 1939-12-07

Family

ID=10081133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1665038A Expired GB515541A (en) 1938-06-03 1938-06-03 Improvements in speed indicators

Country Status (1)

Country Link
GB (1) GB515541A (en)

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