GB481703A - Improvements in clocks - Google Patents

Improvements in clocks

Info

Publication number
GB481703A
GB481703A GB13996/37A GB1399637A GB481703A GB 481703 A GB481703 A GB 481703A GB 13996/37 A GB13996/37 A GB 13996/37A GB 1399637 A GB1399637 A GB 1399637A GB 481703 A GB481703 A GB 481703A
Authority
GB
United Kingdom
Prior art keywords
shaft
wheel
clock
discs
gear
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
GB13996/37A
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 GB481703A publication Critical patent/GB481703A/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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/04—Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Toys (AREA)

Abstract

481,703. Clocks. ETABLISSEMENTS E. JAEGER. May 19, 1937, No. 13996. Convention date, June 18, 1936. [Class 139] In a clock of the type comprising transparent front and rear faces 4 between which are arranged two intermediate transparent discs 15, 16 driven at their periphery from suitable chronometric mechanism in the clock base and carrying members 17, 18 indicating the minutes and hours, these members do not extend to the centre of the discs 15, 16 which carry them and the discs are supported and rotatably guided by rollers 20 pivotally mounted in the clock base. A self-starting synchronous motor drives a vertical shaft marked at its upper end 57, Fig. 2, for observation purposes and carrying a screw which meshes with a helical wheel 33 on a shaft which, in turn, drives a shaft 38 in a similar manner, a pinion 39 thereon meshing with a gear-wheel 44 frictionally secured to a shaft 41 by a spring 43 while a gear-wheel 13 fixed to the shaft 41 engages and drives the toothed rim 11, Fig. 4, surrounding the minute hand transparent disc 15, the hour hand disc 16 being driven similarly by a gear-wheel 14 after suitable speed reduction by gears 47, 48, 50. The knob 53 fixed to shaft 41 serves for setting the clock right. Suitable ring members 24, 25 screen the mechanism from outside observation.
GB13996/37A 1936-06-18 1937-05-19 Improvements in clocks Expired GB481703A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR481703X 1936-06-18

Publications (1)

Publication Number Publication Date
GB481703A true GB481703A (en) 1938-03-16

Family

ID=8903583

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13996/37A Expired GB481703A (en) 1936-06-18 1937-05-19 Improvements in clocks

Country Status (1)

Country Link
GB (1) GB481703A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235793A (en) * 1989-09-08 1991-03-13 Zafar Omar Clock
FR3038080A1 (en) * 2015-06-23 2016-12-30 Jean Rocheron THE INVENTION IS A DEVICE INTRODUCING A NEW CLOCK NEEDLE DISPLAY SYSTEM

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235793A (en) * 1989-09-08 1991-03-13 Zafar Omar Clock
FR3038080A1 (en) * 2015-06-23 2016-12-30 Jean Rocheron THE INVENTION IS A DEVICE INTRODUCING A NEW CLOCK NEEDLE DISPLAY SYSTEM

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