GB440946A - Improvements in synchronous-motor time-measuring apparatus - Google Patents

Improvements in synchronous-motor time-measuring apparatus

Info

Publication number
GB440946A
GB440946A GB28256/35A GB2825635A GB440946A GB 440946 A GB440946 A GB 440946A GB 28256/35 A GB28256/35 A GB 28256/35A GB 2825635 A GB2825635 A GB 2825635A GB 440946 A GB440946 A GB 440946A
Authority
GB
United Kingdom
Prior art keywords
wheel
current
synchronous
shaft
auxiliary movement
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
GB28256/35A
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of GB440946A publication Critical patent/GB440946A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C15/00Clocks driven by synchronous motors
    • G04C15/0054Clocks driven by synchronous motors with power-reserve

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

440,946. Time-switches. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Oct. 12, 1935, No. 28256. Convention date, Oct. 19, 1934. [Class 38 (v)] [See also Group XVIII] Synchronous-motor clock mechanism, for driving clock hands or time-switches, with an auxiliary movement in reserve in which a coupling wheel 7 connected to the hands &c. is coupled to the synchronous-motor 1 if current is flowing and to the auxiliary movement 2 if current fails, is characterized in that the means for changing the coupling wheel's connection are connected to the planet wheel of a differential, of which one sun wheel 15 is driven in one direction from the synchronousmotor 1 (by gear 16) and a second sun wheel 17 is driven in the opposite direction from the auxiliary movement 2 (by gear 18) at a slower speed. The lever 10 carrying the shaft 8 of the pinion 7 is on a shaft 11 connected through a friction coupling 12 to the planet wheel shaft 13. If current is flowing, wheel 15 rotates faster than wheel 17 and arm 10 is lifted to enmesh wheels 7 and 4. At current failure wheel 15 stops and wheel 17 lowers arm 10 until wheels 7 and 6 enmesh ; thereafter clutch 12 slips.
GB28256/35A 1934-10-19 1935-10-12 Improvements in synchronous-motor time-measuring apparatus Expired GB440946A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH440946X 1934-10-19

Publications (1)

Publication Number Publication Date
GB440946A true GB440946A (en) 1936-01-08

Family

ID=4515193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28256/35A Expired GB440946A (en) 1934-10-19 1935-10-12 Improvements in synchronous-motor time-measuring apparatus

Country Status (1)

Country Link
GB (1) GB440946A (en)

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