GB419691A - Improvements in tachometers or speed indicators of the chronometric type with remoteelectric control - Google Patents

Improvements in tachometers or speed indicators of the chronometric type with remoteelectric control

Info

Publication number
GB419691A
GB419691A GB34837/33A GB3483733A GB419691A GB 419691 A GB419691 A GB 419691A GB 34837/33 A GB34837/33 A GB 34837/33A GB 3483733 A GB3483733 A GB 3483733A GB 419691 A GB419691 A GB 419691A
Authority
GB
United Kingdom
Prior art keywords
shaft
speed
distance
wheel
drives
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
GB34837/33A
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.)
ED Jaeger SA
Original Assignee
ED Jaeger SA
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 ED Jaeger SA filed Critical ED Jaeger SA
Publication of GB419691A publication Critical patent/GB419691A/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
    • G01P3/66—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

419,691. Speedometers. ETABLISSEMENTS E. JAEGER, 2, Rue Baudin, Levallois- Perret, Seine, France. Dec. 11, 1933, No. 34837. Convention date, Dec. 14, 1932. [Class 106 (iii).] In apparatus as described in Specification 220,601, [Class 106 (iii)], in which the average speed during a time interval is measured directly, an independent source of power, such as an electric motor, drives both the distance and time elements, while the distance element is synchronized with the shaft, the speed of which is required by remote electric control. In the earlier Specification, a shaft 7 rotated in accordance with distance from the shaft 1, drives a toothed wheel 7<11> by a pinion 8 during a given time interval, and thus rotates a wheel 7<111> against a spring 34, the wheel 7<111> actuating an indicator, not shown. At the end of the time interval, a cam 5 rocks the shaft 7 and disconnects the gears 8, 711, the wheels 7<11>, 7<111> being retained by spring pawls 30, 31 until release by cams 32, 33. The cams are carried on a shaft 6 rotated by gearing including a slipping member from the shaft 1, the speed being controlled by an escapement 21, 18. The cam 5 on shaft 6 engages and disengages the gears 8, 7<11> by means of the rocking lever 41. According to the invention, the shaft 1 is driven by an independent motor which drives both the distance and time shafts 7, 6, the distance shaft 7 being synchronized with the shaft, not shown, the speed of which is required. The shaft 7 is driven from the toothed wheel 3 through a light friction clutch 7<1>, the escapement wheel 4, a spring 9 and flywheel 10. The speed of the escapement wheel 4 is regulated by a rocking element 11 actuated by electromagnets 12, 13, Fig. 2, energized by intermittent currents supplied from an interrupter, not shown, on the shaft whose speed is required. Slipping of the clutch 7<1> allows this synchronization. Alternatively, the shaft 7 may be actuated by a small synchronous motor supplied with current from an alternator.
GB34837/33A 1932-12-14 1933-12-11 Improvements in tachometers or speed indicators of the chronometric type with remoteelectric control Expired GB419691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR419691X 1932-12-14

Publications (1)

Publication Number Publication Date
GB419691A true GB419691A (en) 1934-11-16

Family

ID=8898401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34837/33A Expired GB419691A (en) 1932-12-14 1933-12-11 Improvements in tachometers or speed indicators of the chronometric type with remoteelectric control

Country Status (1)

Country Link
GB (1) GB419691A (en)

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