GB384128A - Improvements in electric clocks - Google Patents

Improvements in electric clocks

Info

Publication number
GB384128A
GB384128A GB359232A GB359232A GB384128A GB 384128 A GB384128 A GB 384128A GB 359232 A GB359232 A GB 359232A GB 359232 A GB359232 A GB 359232A GB 384128 A GB384128 A GB 384128A
Authority
GB
United Kingdom
Prior art keywords
wheel
spring
motor
hands
chiming
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
GB359232A
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.)
Stockall Marples & Co Ltd
Original Assignee
Stockall Marples & 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 Stockall Marples & Co Ltd filed Critical Stockall Marples & Co Ltd
Priority to GB359232A priority Critical patent/GB384128A/en
Publication of GB384128A publication Critical patent/GB384128A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/14—Winding-up the striking mechanism by the clockwork; winding up the clockwork by the striking mechanism

Landscapes

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

Abstract

384,128. Electric clocks. STOCKALL, MARPLES, & CO., Ltd. and STOCKALL, J. J., 6, Clerkenwell Road, London. Feb. 6, 1932, No. 3592. [Class 139.] Overwinding, preventing.-In a synchronousmotor clock, the motor a drives the clock hands directly, and the hands are geared to the winding wheel c of a spring d for striking, chiming, or alarm mechanism ; there being a free-wheel clutch between the hand gearing and the motor. The motor, through gearing b, l, k, i, drives a wheel c one revolution an hour. Wheel c is rigid with a shaft which also has fixed to it one end of the spring d; the latter being in a barrel g rigid with the cam wheel h controlling the striking hammer. Wheel c is also geared to drive the minute arbor e. To enable the hands to be set forward the drive between motor a and wheel c includes a pawl k on wheel l, which engages a ratchet i rigid with wheel c. When the hands are set forward wheel i moves ahead of pawl k and the spring d is wound up : to prevent overwinding, however, the spring is frictionally connected to the barrel g by means of an outer convolution d<1>. To reduce backlash of the minute hand, the shaft e has a ratchet m with fine teeth which coact with a pawl n on the frame. Additional spring drums may be geared to wheel c for operating different striking or chiming movements. Cam wheel h may be replaced by a chiming barrel.
GB359232A 1932-02-06 1932-02-06 Improvements in electric clocks Expired GB384128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB359232A GB384128A (en) 1932-02-06 1932-02-06 Improvements in electric clocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB359232A GB384128A (en) 1932-02-06 1932-02-06 Improvements in electric clocks

Publications (1)

Publication Number Publication Date
GB384128A true GB384128A (en) 1932-12-01

Family

ID=9761239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB359232A Expired GB384128A (en) 1932-02-06 1932-02-06 Improvements in electric clocks

Country Status (1)

Country Link
GB (1) GB384128A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933882A (en) * 1955-12-30 1960-04-26 Sonobe Shiro Motor clock provided with a spring automatically wound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933882A (en) * 1955-12-30 1960-04-26 Sonobe Shiro Motor clock provided with a spring automatically wound

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