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US3721083A - Calendar clock - Google Patents

Calendar clock Download PDF

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Publication number
US3721083A
US3721083A US00227118A US3721083DA US3721083A US 3721083 A US3721083 A US 3721083A US 00227118 A US00227118 A US 00227118A US 3721083D A US3721083D A US 3721083DA US 3721083 A US3721083 A US 3721083A
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US
United States
Prior art keywords
wheel
day
moon
cam
calendar
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
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US00227118A
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English (en)
Inventor
H Jauch
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.)
JAUCH E UHRENFAB
Original Assignee
JAUCH E UHRENFAB
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Publication date
Application filed by JAUCH E UHRENFAB filed Critical JAUCH E UHRENFAB
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Publication of US3721083A publication Critical patent/US3721083A/en
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Expired - Lifetime legal-status Critical Current

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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
    • G04B19/26—Clocks or watches with indicators for tides, for the phases of the moon, or the like
    • G04B19/268—Clocks or watches with indicators for tides, for the phases of the moon, or the like with indicators for the phases of the moon

Definitions

  • the calendar mechanism is adapted to indicate the day of the week, the date, the month and moon phases, and it includes separate indicating devices therefor which are actuated by the clockwork mechanism.
  • the day, date and month indicating devices are provided with respective dials each with indicia in the clockwise direction, and a respective hand.
  • the hands are driven by means of ratchet wheels which derive their movement from the clockwork mechanism by means of pawls and an operating mechanism which follows curved cams and actuates the pawls.
  • the invention relates to a calendar clock consisting of a conventional clockwork for indication of the time of the day and of a calendar mechanism which derives its movement from the clockwork by means of a 12 hour wheel which is seated on the hour-wheel shaft and which meshes in a ratio of 1:2 with a 24-hour wheel supported in the body of the calendar mechanism and wherein the calendar mechanism is adapted to indicate the day of the week, the month, the date and the moon phase.
  • Prior Art In a conventional calendar clock of this kind, the names of the months are located on a manually adjustable disc, and they appear in a corresponding slot in the dial of the clock.
  • the indicating devices for the date and for the day of the week are provided with a common indicator, and a geared wheel carrying a moon image turns every day at approximately 12.00 A. M. simultaneously with the above indicator by an angle corresponding to one day.
  • the image of the moon cooperates with a suitably shaped slot or window in the dial of the clock, so that the phases of the moon are shown approximately correctly in the course of the month. Since the dates and the days of the week are arranged concentrically in two circles, one of them being located inside the other, the days of the week can only be represented by their first letters, and this results in difficult reading.
  • the driving means and the control means of the calendar mechanism are to be simple and robust.
  • the calendar mechanism is provided with mutually separated indicating devices for the month, the day of the week, the date and the moon phase, which devices are actuated by the clockwork, the first three indicating devices each being provided with one dial, each of the dials being provided with indicia in the clock-wise direction, and with one indicator hand.
  • the indicators are driven by means of ratchet wheels which derive their movement from the clockwork by means of pawls and operating means which follow curved cams and actuate the pawls.
  • the uniform drive of the moon phase indicating device and the control of the remaining indicating devices can be achieved in accordance with an advantageous embodiment of the invention in such a manner that a moon drive and a first curved cam, i.e., a so-called day curved cam, are rigidly connected to the 24-hour wheel, wherein the moon drive meshes in an appropriate transmission ratio with a moon wheel which drives the moon phase indicating device, and a follower member follows the first curved cam, said follower member being seated on a connecting rod which is under the influence of a spring, the connecting rod carrying the pawls for driving the date ratchet wheel and day-of-the-week ratchet wheel.
  • a particularly simple and robust embodiment of the calendar clock according to the invention is obtained.
  • the increasing portion of the first curved cam corresponds to the time period between approxi mately 4.00 A.M. to 12.00 A.M.
  • the decreasing portion corresponds to the time period between approximately l2.00 A.M. and 4.00 A.M.
  • a step-wise switch for instance, at 12.00 A.M., is conceivable in principle, resulting from a sudden drop on the curved cam.
  • this possibility was intentionally omitted in order to prevent the curve on the curved cam from abutting against the connecting rod and possibly becoming stopped thereby when the indicators are manually turned in a counter-clockwise direction.
  • the date ratchet wheel is provided with 31 teeth and the day-of-the-week ratchet wheel is provided with 21 teeth, the indicator of the date indicating device being directly attached to the date ratchet wheel and the indicator of the day-of-the-week indicating device being rigidly connected to a day-of-the-week gear wheel which meshes by means of an interposed gear wheel serving the purpose of reversing the direction of rotation of a gear wheel rigidly connected to the day-of-theweek ratchet wheel and having a 3:1 transmission ratio in relation to the day-of-the-week gear wheel.
  • the switching distances for the date ratchet wheel and for the day-ofthe-week ratchet wheel are approximately the same, and a common connecting rod or a similar device can be used for actuating the ratchet wheels.
  • a second curved cam is rigidly connected to the date ratchet wheel, i.e., the so-called month curved cam, and a follower member on a pivotably supported connecting rod follows this curved cam, the end of the connecting rod which is opposite the pivot axis supporting the pawl for actuating the month ratchet wheel.
  • the entire control of these three ratchet wheels consequently, can be accomplished by means of two curved cams and two actuating members controlled by the cams and provided with one pawl for each ratchet wheel. This control is extremely simple and any degree of accuracy can be achieved by the same. Additionally, it adds only insignificant loading on the clockwork.
  • the increase of the curvature of the second curved cam corresponds, to
  • the month and date indicators can also be manually reset without any problems by a simple locking rotation of the same in the direction of the dial indicia.
  • the moon wheel carries a moon disc provided with two images of a full moon which are diametrically opposed, the moon disc being rotatable in relation to the moon wheel in order to enable manual setting and adjusting of the moon phase.
  • the moon drive meshes with the moon wheel in a transmission ratio of 6:354, as the time of rotation of the moon disc in this case amounts to 29 days and 12 hours, which approximates the synodic orbiting time of 29 days, 12 hours, 44 minutes and 2.8 seconds.
  • the entire calendar mechanism according to the invention can be simply attached to a conventional clock, for instance a pendulum clock with a main spring drive or chain drive and Riverside chimes, so that it can be added to conventional standing timepieces or the like without substantial alterations of the clockwork.
  • a conventional clock for instance a pendulum clock with a main spring drive or chain drive and Riverside chimes, so that it can be added to conventional standing timepieces or the like without substantial alterations of the clockwork.
  • FIG. 1 is a front view of the dial of a calendar clock according to the invention
  • FIG. 2 is a front view of the clock with the dial removed
  • FIG. 3 is a cross-sectional view taken approximately along the line III-III of FIG. 2.
  • FIG. 1 therein is seen a dial provided with a shaped window 12 with two circular projections 14 extending into the window.
  • a moon dial 18 is visible in the window, the moon dial being provided with two moon images 16 angularly offset at an angle of 180.
  • Both circular projections 14 are constructed and positioned in such manner that the moon images 16 are covered by these projections in a certain position, namely in the new moon position. Consequently, during the rotation ofthe moon disc or dial 18 by 180, one of the moon images 16 always travels from one new moon position behind one projection 14 to the next new moon position behind the other projection 14, whereas the other moon image is entirely covered.
  • the dial is provided with a conventional time scale 20, which cooperates with conventional hands 22.
  • a date dial 24, a day-of-the-week dial 26 and a month dial 28 are arranged inside the scale 20, each of which cooperates with a respective indicator or hand 30, 32 and 34. All indicators, and also the moon disc 18, rotate in a clockwise direction. It can be seen in FIGS. 2 and 3 that the moon disc 18 carrying the moon image 16 is rotatably supported on a moon wheel 36 by means of a spring lock washer 38.
  • the spring lock washer, the moon disc 18 and the moon wheel 36 are supported on a common axle 40, which is rigidly attached to the body 42 of the entire calendar mechanism.
  • the body 42 of the calendar mechanism is capable of being attached to the housing of a conventional clock 46 by means of plug connectors 44 and suitable fasteners (not shown).
  • the clockwork is provided in a conventional manner with a drive 48, an hour wheel 50, an hour wheel shaft 52, a minute shaft 54 as well as hands 22 moved by the minute shaft and hour wheel shaft respectively.
  • the hands 22 cooperate with the time scale 20 on the dial 10 in the manner shown in FIG. 1.
  • An additional 12-hour wheel 56 is mounted on the hour wheel shaft 52, the l2-hour wheel meshing in a ratio of 1:2 with a 24-hour wheel 58 which is supported in the body 42 of the calendar mechanism, so that the wheel 58 undergoes one rotation a day in the counterclockwise direction.
  • a first curved cam 60, the socalled day curved cam, as well a moon drive 62 are rigidly connected to the 24-hour wheel 58.
  • the moon drive 62 meshes with the moon wheel 36 in a transmission ratio of 6:354, so that the time of rotation of the moon disc 18 is 29 days 12 hours which approximates the synodic orbiting time of 29 days 12 hours 44 minutes and 2.8 seconds.
  • a roller 64 follows the day curved cam 60, said roller being supported on a connecting rod 66 which is provided with two longitudinal slots 68 and 70 which engage two bolts 72 and 74 rigidly connected to the body 42 of the calendar mechanism, so that the connecting rod is longitudinally displaceable in the calendar mechanism body.
  • the connecting rod 66 is subject to the action of a spring 76 which acts to urge the roller 64 against the day curved cam 60.
  • the connecting rod 66 carries two pawls 78 and 80 which are held by means of a spring 82 attached to the connecting rod 66.
  • Pawl 78 is in engagement with the teeth of a date ratchet wheel 84 with 31 teeth, the wheel 84 being supported in the body 42 of the calendar mechanism.
  • the pawl 80 is in engagement with the teeth of a day-of-the-week ratchet wheel 86 with 21 teeth, the wheel 86 also being supported in the body 42 of the calendar mechanism.
  • the day curved cam 60 has an increased radius in the period between approximately 4.00 A.M. and 12.00 A.M. and a decreased radius in the period between approximately 12.00 A.M.
  • both pawls shift by one tooth distance of both ratchet wheels 84 and 86 and both ratchet wheels are shifted by means of the pawls by one tooth distance during the passage of the decreased radius portion of the day curved cam 60.
  • the indicator 30 of the date indicating device is fastened to the date ratchet wheel 84.
  • a gear wheel 88 is rigidly connected to the day-ofthe-week ratchet wheel 86, the gear wheel 88 meshing in a ratio of 3:1 with an intermediate wheel 90 which serves to reverse the direction of movement.
  • the intermediate gear wheel 90 meshes with a day-of-the-week gear wheel 92 in a transmission ratio of 1:1.
  • the indicator 32 of the day-ofthe-week indicating device is rigidly connected to the day-of-the-week gear wheel 92. Consequently, the indicator 32 is subject to exactly one revolution in the course of one week.
  • a second curved cam 94 is fastened to the date ratchet wheel M.
  • a member Q6 follows the month curved cam 94, the member 96 being seated on a connecting rod 100 which is pivotably supported on an axle 98 attached to the body 412 of the calendar mechanism.
  • the connecting rod lltlt) carries at its end opposite to the axle 98 a pawl 11M which is held in engagement, by means of a spring 1102 attached to the connecting rod 100, with a month ratchet wheel ms supported in the body d2 of the calendar mechanism.
  • the indicator 34 of the month indicating device is rigidly connected to the month ratchet wheel 111116.
  • a spring attached to the body 42 of the calendar mechanism urges the member 96 into contact with the month curved cam 94.
  • the month curved cam is provided with an increasing portion extending through 311 days and an abrupt step-wise decreasing portion.
  • the month ratchet wheel 1106, consequently, is shifted on the 31st day of each month within a period of several hours in the night by one tooth.
  • Locking springs 110,112 and 1114 respectively prevent the three ratchet wheels 84, 86 and 11616 from rotating in the opposite direction.
  • each of the indicators or hands can be manually moved to adjust the associated reading as for example at the ends of months with less than 31 days.
  • a calendar clock comprising: a clockwork mechanism including an hour hand, a minute hand, an hour hand shaft supporting the hour hand and a minute hand shaft supporting the minute hand; a calendar mechanism for indicating day, date, month and moon phases; and means drivingly coupling the calendar mechanism and the clockwork mechanism, the latter means including a 24-hour wheel, a 12-hour wheel seated on the hour hand shaft and in mesh in a 1:2 ratio with the 24-hour wheel, said calendar mechanism including a day dial, a date dial, a month dial, the dials having indicia thereon arranged in the clockwise direction, a hand for each of the dials, a separate ratchet wheel coupled to each hand to drive the same with respect to its associated dial, a pawl coupled with each ratchet wheel to drive the same, cam means driven from said 24-hour wheel, and operating means coupled to said cam means for following the same and for operating said pawls to rotate the ratchets wheels and the hands therewith, the moon phase indicator being directly driven with the 24-hour wheel.
  • the means coupling the calendar mechanism and the clockwork mechanism comprising a drive for the moon phase indicator rigidly connected to the 24-hour wheel, and a moon wheel in mesh with said drive for the moon phase indicator, a follower member following the first curved cam, a connecting rod supporting said follower member, a spring acting on the connecting rod to urge the follower member against said first cam, said pawls for driving the date ratchet wheel and the day ratchet wheel being mounted on said connecting rod.
  • a calendar clock as claimed in claim 4 comprising a day gear wheel rigidly supporting the day hand, an intermediate gear in mesh with the clay gear wheel, and a gear. wheel rigidly connected with the day ratchet wheel and in mesh with said intermediate gear, the intermediate gear providing reverse direction of rotation of the day gear wheel relative to the day ratchet gear and a transmission ratio of 1:3.

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US00227118A 1971-02-18 1972-02-17 Calendar clock Expired - Lifetime US3721083A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2107829 1971-02-18

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US3721083A true US3721083A (en) 1973-03-20

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US00227118A Expired - Lifetime US3721083A (en) 1971-02-18 1972-02-17 Calendar clock

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US (1) US3721083A (it)
IT (1) IT948595B (it)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902309A (en) * 1974-06-19 1975-09-02 Mechtronics Corp Clock for simultaneously displaying different but indirectly related time cycles
DE3620421A1 (de) * 1985-06-20 1987-01-02 Seikosha Kk Uhr mit anzeige der mondphase
US4674889A (en) * 1985-02-20 1987-06-23 Iwc International Watch Co. Ag Watch
US4684260A (en) * 1985-02-15 1987-08-04 Johann Jackle Metallwarenfabrik, GmbH & Co. Astronomical clock
EP0230878A1 (fr) * 1986-01-14 1987-08-05 Complications S.A. Mouvement d'horlogerie
US4881213A (en) * 1987-09-24 1989-11-14 Eta Sa Fabriques D'ebauches Watch movement having date and phases of the moon indicators
US4993002A (en) * 1989-10-16 1991-02-12 Kerr Breene M Nautical moon and tide clock apparatus
US5086417A (en) * 1989-10-16 1992-02-04 Kerr Breene M Nautical moon and tide clock apparatus
US5475655A (en) * 1990-10-09 1995-12-12 Kerr; Breene M. Nautical clock apparatus and methods
US5956294A (en) * 1996-12-26 1999-09-21 Seiko Instruments Inc. Multi-functional timepiece
US20040027926A1 (en) * 2000-10-12 2004-02-12 Walter Haselberger Display device for watches
DE10315757A1 (de) * 2003-04-04 2004-11-11 Lange Uhren Gmbh Uhr mit einer Mondphasenanzeige
US20050029052A1 (en) * 2000-12-21 2005-02-10 Wal-Mart Stories, Inc. Methods and apparatus for improved register checkout
US20050094491A1 (en) * 2003-10-31 2005-05-05 Wallace Michael G. Clock movement with moon dial
USD795118S1 (en) * 2016-01-29 2017-08-22 Omega Ltd. Watch dial
USD918758S1 (en) * 2020-08-12 2021-05-11 Victor Raymond Grenon Watch face

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US372575A (en) * 1887-11-01 Calendar-clock
US508467A (en) * 1893-11-14 Moon-dial for clocks
US754845A (en) * 1903-05-07 1904-03-15 John C Burke Astronomical clock.
US1126214A (en) * 1912-07-19 1915-01-26 Herschede Hall Clock Company Clock mechanism.
US1336150A (en) * 1918-01-02 1920-04-06 Niemczura Aloysius Calendar-clock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US372575A (en) * 1887-11-01 Calendar-clock
US508467A (en) * 1893-11-14 Moon-dial for clocks
US754845A (en) * 1903-05-07 1904-03-15 John C Burke Astronomical clock.
US1126214A (en) * 1912-07-19 1915-01-26 Herschede Hall Clock Company Clock mechanism.
US1336150A (en) * 1918-01-02 1920-04-06 Niemczura Aloysius Calendar-clock

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902309A (en) * 1974-06-19 1975-09-02 Mechtronics Corp Clock for simultaneously displaying different but indirectly related time cycles
US4684260A (en) * 1985-02-15 1987-08-04 Johann Jackle Metallwarenfabrik, GmbH & Co. Astronomical clock
US4674889A (en) * 1985-02-20 1987-06-23 Iwc International Watch Co. Ag Watch
DE3620421A1 (de) * 1985-06-20 1987-01-02 Seikosha Kk Uhr mit anzeige der mondphase
EP0230878A1 (fr) * 1986-01-14 1987-08-05 Complications S.A. Mouvement d'horlogerie
CH663313GA3 (it) * 1986-01-14 1987-12-15
US4766579A (en) * 1986-01-14 1988-08-23 Complications S.A. Timepiece having a control stem correcting mechanism with at least two setting positions
US4881213A (en) * 1987-09-24 1989-11-14 Eta Sa Fabriques D'ebauches Watch movement having date and phases of the moon indicators
US4993002A (en) * 1989-10-16 1991-02-12 Kerr Breene M Nautical moon and tide clock apparatus
US5086417A (en) * 1989-10-16 1992-02-04 Kerr Breene M Nautical moon and tide clock apparatus
US5475655A (en) * 1990-10-09 1995-12-12 Kerr; Breene M. Nautical clock apparatus and methods
US5956294A (en) * 1996-12-26 1999-09-21 Seiko Instruments Inc. Multi-functional timepiece
US20040027926A1 (en) * 2000-10-12 2004-02-12 Walter Haselberger Display device for watches
US6842404B2 (en) * 2000-10-12 2005-01-11 Cartier International, B.V. Display device for watches
US20050029052A1 (en) * 2000-12-21 2005-02-10 Wal-Mart Stories, Inc. Methods and apparatus for improved register checkout
DE10315757A1 (de) * 2003-04-04 2004-11-11 Lange Uhren Gmbh Uhr mit einer Mondphasenanzeige
DE10315757B4 (de) * 2003-04-04 2006-10-12 Lange Uhren Gmbh Uhr mit einer Mondphasenanzeige
US20050094491A1 (en) * 2003-10-31 2005-05-05 Wallace Michael G. Clock movement with moon dial
USD795118S1 (en) * 2016-01-29 2017-08-22 Omega Ltd. Watch dial
USD918758S1 (en) * 2020-08-12 2021-05-11 Victor Raymond Grenon Watch face

Also Published As

Publication number Publication date
IT948595B (it) 1973-06-11

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