GB456809A - Mechanical date indicator to be driven by and to be applied to clocks and watches - Google Patents

Mechanical date indicator to be driven by and to be applied to clocks and watches

Info

Publication number
GB456809A
GB456809A GB808836A GB808836A GB456809A GB 456809 A GB456809 A GB 456809A GB 808836 A GB808836 A GB 808836A GB 808836 A GB808836 A GB 808836A GB 456809 A GB456809 A GB 456809A
Authority
GB
United Kingdom
Prior art keywords
lever
ring
month
pin
date
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
GB808836A
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.)
PIETER JOHANNES PAAUWE
Original Assignee
PIETER JOHANNES PAAUWE
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 PIETER JOHANNES PAAUWE filed Critical PIETER JOHANNES PAAUWE
Priority to GB808836A priority Critical patent/GB456809A/en
Publication of GB456809A publication Critical patent/GB456809A/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
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G04B19/2536—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement automatically corrected at the end of months having less than 31 days

Landscapes

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

Abstract

456,809. Date indicators. PAAUWE, P. J., 54, Pieter van der Doesstraat, Amsterdam. March 18, 1936, No. 8088. [Class 106 (iv)] A disc 2 rotating with the hour hand of a watch or clock carries a pin 1 which engages a lever 3 pivoted at 4 to the overhanging part of a lever 7 pivoted at 8. The lever 3 is thus moved into contact with a step 6 on the lever 7 and this latter lever is then rocked clockwise about its pivot 8 until the pin 3 moves along the inner side of the lever, Fig. 2. The pin 1 then restores the lever 7 by engaging the surface 10 but on the next revolution of the disc 2 the pin 1 cannot engage the lever 3 and the lever 7 is not rocked. Towards the end of this next revolution the pin 1 moves the lever 3 into the position shown in Fig. 1 and the cycle recommences, the lever 7 thus being rocked once every twenty-four hours. The lever 7 carries pawls 11, 14, 18 engaging teeth on the date figure, day-name and month-name rings 12, 16, and 17 respectively. The pawl 18 is normally held out of action by a lever 20 but on the 30th of the month the end of the lever 20 moves into a depression 21 in the date ring 12 and allows the pawl 18 to move nearer to the month-name ring 17. If the month has thirty days the corresponding tooth on the ring 17 projects so far that at the next movement of the lever 7 the pawl 18 advances the month-name ring. If the case of months having thirty-one days the corresponding teeth on the ring 17 do not project so far and consequently are not engaged by the lever 20 until the date ring 12 has moved a further step to indicate " 31 " and to allow the lever 20 to fall into a deeper notch 28 in the ring 12. To move the date ring 12 from " 30 " to " 1 " at the end of a 30-day month, a slider 22 is provided which is moved to the left by the engagement of a pin 25 on the slider with a notch 23, the notches being provided only in those positions corresponding to 30-day months. The slider is then returned by an arm 27 of the lever 7 and advances the date ring 12 by a projection 26a engaging teeth 26.
GB808836A 1936-03-18 1936-03-18 Mechanical date indicator to be driven by and to be applied to clocks and watches Expired GB456809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB808836A GB456809A (en) 1936-03-18 1936-03-18 Mechanical date indicator to be driven by and to be applied to clocks and watches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB808836A GB456809A (en) 1936-03-18 1936-03-18 Mechanical date indicator to be driven by and to be applied to clocks and watches

Publications (1)

Publication Number Publication Date
GB456809A true GB456809A (en) 1936-11-16

Family

ID=9845522

Family Applications (1)

Application Number Title Priority Date Filing Date
GB808836A Expired GB456809A (en) 1936-03-18 1936-03-18 Mechanical date indicator to be driven by and to be applied to clocks and watches

Country Status (1)

Country Link
GB (1) GB456809A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082947A (en) * 1960-06-27 1963-03-26 Livingston Robert Catamenial indicators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082947A (en) * 1960-06-27 1963-03-26 Livingston Robert Catamenial indicators

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