US3559394A - Calendar clockwork - Google Patents

Calendar clockwork Download PDF

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Publication number
US3559394A
US3559394A US872961A US3559394DA US3559394A US 3559394 A US3559394 A US 3559394A US 872961 A US872961 A US 872961A US 3559394D A US3559394D A US 3559394DA US 3559394 A US3559394 A US 3559394A
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US
United States
Prior art keywords
calendar
clockwork
lever
adjustment
transmission mechanism
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 - Lifetime
Application number
US872961A
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English (en)
Inventor
Pieter Wilhelmus Maria Gaemers
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Individual
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Individual
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Filing date
Publication date
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Publication of US3559394A publication Critical patent/US3559394A/en
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    • 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
    • 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

Definitions

  • FIG. 2 shows the transmission mechanism in its end positz'ion, just after the calendar mechanism has been adjuste
  • FIG. 3 shows the transmission mechanism in its end position just before returning to its initial position
  • FIG. 4 shows the transmission mechanism just after being returned to its initial position.
  • a transmission mechanism comprising a shaft 2 mounted for rotacalendar mechanism to be manually adjusted independently of the operation of the clockwork mechanism.
  • the invention relates to a calendar clockwork, comprising a transmission mechanism for periodically adjusting the calendar mechanism, said transmission mechanism being disposed between the clockwork mechanism and the calendar mechanism and having a drive shaft coupled with said clockwork mechanism.
  • a calendar clockwork comprising a transmission mechanism for periodically adjusting the calendar mechanism, said transmission mechanism being disposed between the clockwork mechanism and the calendar mechanism and having a drive shaft coupled with said clockwork mechanism, and wherein said drive shaft, which is arranged to rotate at a speed of one revolution per 24 hours, is provided with two members, fixedly mounted thereon, such as cams, one of said members cooperating with a movable latch element for temporarily locking and suddenly releasing an adjustment lever mounted for rocking movement through a limited distance, said adjustment lever having an adjustment finger for adjusting the calendar mechanism, said calendar mechanism being entirely uncoupled from said adjustment finger before and after the adjustment, said adjustment lever "being connected with an operating lever by means of a power element, e.g., a spring and forming a snapping mechanism therewith, said operating lever being mounted for rocking movement, limited by the other member mounted on the drive shaft.
  • said latch element is radially movable.
  • FIG. 1 shows the transmission mechanism in its initial tion in a carrying plate 1, said shaft having a gear wheel (not shown) driven by a clockwork mechanism (not shown) in the direction of the arrow P at a speed of one revolution per 24 hours.
  • a gear wheel (not shown) driven by a clockwork mechanism (not shown) in the direction of the arrow P at a speed of one revolution per 24 hours.
  • Mounted on the shaft 2 are two cams 3 and 4, the cam 3 of which serves for rocking an operating lever 6 through a limited distance about its rotational shaft 5, and the cam 4 of which is arranged for axially moving a slide 8 guided in a straight line between guide blocks 7.
  • the operating lever 6 is coupled through a tensile spring 9 with a lip 10 of an annular adjustment lever 11, mounted between guide rolls 12, which define the axis of rotation of the adjustment lever.
  • the adjustment lever 11 is provided with a dog 13, which in cooperation with two abutment pins 14, mounted on the carrying plate 1 limit the to and fro movement of the adjustment lever 11.
  • the adjustment lever 11 carries an adjustment finger 15. When the adjustment lever 11 moves in one direction, the adjustment finger 15 operates a switch lever 16 of a calendar mechanism (not shown) and when it moves in the other direction to return to its initial position, it causes the switch lever 16 to perform an inoperative stroke.
  • the transmission mechanism is at some seconds before 24 hours (midnight) in the position shown in FIG. 1.
  • the adjustment lever 11 is locked through the cooperation of the dog 13 on the adjustment lever and the slide 8 forced radially outwardly by the cam 4, and the spring 9 is tensioned as strongly as possible.
  • the slide 8 is released by the cam 4 and forced radially inwardly by the dog 13 under the tension of the spring 9, the adjustment lever 11 snapping suddenly to the position shown in FIG. 2, in which position the dog 13 On the adjustment lever is in contact with the left-hand abutment pin 14 as viewed in the drawing.
  • the switch lever 16 of the calendar mechanism is adjusted and released by means of the adjustment finger 15.
  • the transmission mechanism driven by the clockwork mechanism is moved during the next 12 hours from the position of FIG. 2 to the position of FIG. 3.
  • the slide 8 is soon forced radially outwardly by the cam 3 for it to cooperate with the dog 13 on the adjustment lever 11 to keep the latter locked in the position it occupied immediately after 24 hours (midnight).
  • the position of FIG. 3 has been reached, in which the operating lever 6 (according to FIG. 3) has moved as far to the right as possible, and the spring 9 has been tensioned to its maximum extent, but the position of the adjustment lever 11 as shown in FIG. 2 has been maintained.
  • the slide 8 is released by the cam 3 for it to be forced radially inwardly under the pressure of the dog 13 on the adjustment lever 11.
  • the lever 11 will snap from the position of FIGS. 2 and 3, which has been maintained until that point of time, to the position of FIG. 4, in which movement it is limited by the right-hand abutment pin 14, as viewed in FIG. 4.
  • the adjustment finger 15 will take along the switch lever .16 through some distance, the latter performing an inoperative stroke, whereafter the switch lever 16 will return to its operative position, for example, under spring action.
  • the switch lever 16 During each complete revolution of cams 3 and 4, completed in 24 hours, the switch lever 16 remains uncoupled from the transmission mechanism, except for the two short periods when the adjustment lever 11 with its finger 15 performs its snapping movement. Consequently, the switch lever 16 can virtually at all times be operated in another manner than by the transmission mechanism for synchronizing the calendar mechanism, without the danger of forcing or damaging the calendar clockwork.
  • a calendar clockwork comprising a transmission mechanism for periodically adjusting the calendar mechanism, said transmission mechanism being disposed between the clockwork mechanism and the calendar mecha- 4 nism and having a drive shaft coupled with said clockwork mechanism, and wherein said drive shaft, which is arranged to rotate at a speed of one revolution per 24 hours, is provided with two members, fixedly mounted thereon, such as cams, one of said members cooperating with a movable latch element for temporarily locking and suddenly releasing an adjustment lever mounted for rocking movement through a limited distance, said adjustment lever having an adjustment finger for adjusting the calendar mechanism, said calendar mechanism being entirely uncoupled from said adjustment finger before and after the adjustment, said adjustment lever being connected with an operating lever by means of a power element, e.g., a spring and forming a snapping mechanism therewith, said operating lever being mounted for rocking movement limited by the other member mounted on the drive shaft.
  • a power element e.g., a spring and forming a snapping mechanism therewith

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Operated Clutches (AREA)
  • Transmission Devices (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US872961A 1968-10-31 1969-10-31 Calendar clockwork Expired - Lifetime US3559394A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6815559A NL6815559A (de) 1968-10-31 1968-10-31

Publications (1)

Publication Number Publication Date
US3559394A true US3559394A (en) 1971-02-02

Family

ID=19805051

Family Applications (1)

Application Number Title Priority Date Filing Date
US872961A Expired - Lifetime US3559394A (en) 1968-10-31 1969-10-31 Calendar clockwork

Country Status (9)

Country Link
US (1) US3559394A (de)
JP (1) JPS4819275B1 (de)
AT (1) AT300669B (de)
BE (1) BE740780A (de)
CH (2) CH1630369A4 (de)
FR (1) FR2022046B1 (de)
GB (1) GB1247806A (de)
LU (1) LU59741A1 (de)
NL (1) NL6815559A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3540524B1 (de) * 2018-03-13 2022-02-16 Montres Breguet S.A. Springender und regulierter uhranzeigemechanismus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH460645A (fr) * 1966-02-25 1968-09-30 Ebauches Sa Pièce d'horlogerie à calendrier

Also Published As

Publication number Publication date
BE740780A (de) 1970-04-01
FR2022046A1 (de) 1970-07-24
DE1953524B2 (de) 1972-09-28
CH1630369A4 (de) 1971-01-29
GB1247806A (en) 1971-09-29
AT300669B (de) 1972-08-10
FR2022046B1 (de) 1974-02-22
DE1953524A1 (de) 1970-05-06
CH507545A (de) 1971-01-29
NL6815559A (de) 1970-05-04
JPS4819275B1 (de) 1973-06-12
LU59741A1 (de) 1970-01-12

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