GB459907A - Improvements in and relating to synchronous motor clocks and time-operated mechanisms - Google Patents

Improvements in and relating to synchronous motor clocks and time-operated mechanisms

Info

Publication number
GB459907A
GB459907A GB3435135A GB3435135A GB459907A GB 459907 A GB459907 A GB 459907A GB 3435135 A GB3435135 A GB 3435135A GB 3435135 A GB3435135 A GB 3435135A GB 459907 A GB459907 A GB 459907A
Authority
GB
United Kingdom
Prior art keywords
motor
wheel
driven
auxiliary
sun
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
GB3435135A
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.)
Horstmann Gear Co Ltd
Original Assignee
Horstmann Gear Co Ltd
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 Horstmann Gear Co Ltd filed Critical Horstmann Gear Co Ltd
Priority to GB3435135A priority Critical patent/GB459907A/en
Publication of GB459907A publication Critical patent/GB459907A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C15/00—Clocks driven by synchronous motors
    • G04C15/0054—Clocks driven by synchronous motors with power-reserve

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

459,907. Electric clocks. HORSTMANN GEAR CO., Ltd., and HORSTMANN, A., Newbridge Works, Bath, Somerset. Dec. 11, 1935, No. 34351. [Class 139] Timekeeping mechanism comprising in combination a synchronous electric motor 4, auxiliary clockwork mechanism of which the mainspring 6 is wound by motor 4 through a slipping arrangement to prevent overwinding, a time dial or equivalent (shaft 8) coupled to motor 4 and the auxiliary clockwork through a differential gear G, so as to be driven by motor 4 on the auxiliary according to which one is working, and an electromagnetic brake 12 which arrests the auxiliary clockwork except when the current to the motor 4 fails. The centre arbor 8, for driving the time dial (not shown), or other time-operated element, is driven by an epicyclic train G of which the planet carrier 13 is common to two sun wheels 14 and 15. Sun-wheel 14 is driven by the synchronous motor 4 through worm gear 18 and train 19 ... 24, of which wheel 24 is rigid with sun-wheel 14 and also drives a wheel 25 for winding the mainspring 6 of the auxiliary movement. Whilst the motor is running the circuit also energizes a solenoid 5 which pulls an armature lever with a slidable springy brake 12 against the scape wheel 11 to assist the latter. When the motor 4 ceases to act, the other sun-wheel 15 is driven by spring 6 through a train governed by the escapement 9. Spring 6 may also be wound manually by means of an arbor 31.
GB3435135A 1935-12-11 1935-12-11 Improvements in and relating to synchronous motor clocks and time-operated mechanisms Expired GB459907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3435135A GB459907A (en) 1935-12-11 1935-12-11 Improvements in and relating to synchronous motor clocks and time-operated mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3435135A GB459907A (en) 1935-12-11 1935-12-11 Improvements in and relating to synchronous motor clocks and time-operated mechanisms

Publications (1)

Publication Number Publication Date
GB459907A true GB459907A (en) 1937-01-18

Family

ID=10364565

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3435135A Expired GB459907A (en) 1935-12-11 1935-12-11 Improvements in and relating to synchronous motor clocks and time-operated mechanisms

Country Status (1)

Country Link
GB (1) GB459907A (en)

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