US3901019A - Watch movement - Google Patents

Watch movement Download PDF

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Publication number
US3901019A
US3901019A US484260A US48426074A US3901019A US 3901019 A US3901019 A US 3901019A US 484260 A US484260 A US 484260A US 48426074 A US48426074 A US 48426074A US 3901019 A US3901019 A US 3901019A
Authority
US
United States
Prior art keywords
wheel
barrel
watch movement
center
rotor
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
US484260A
Other languages
English (en)
Inventor
Hans Kocher
Werner Haenzi
Erwin Muff
Claude-Andre Gygaz
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.)
SSIH Management Services SA
Original Assignee
SSIH Management Services 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 SSIH Management Services SA filed Critical SSIH Management Services SA
Application granted granted Critical
Publication of US3901019A publication Critical patent/US3901019A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B13/00—Gearwork
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/10—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited
    • G04B5/12—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited acting in one direction only

Definitions

  • ABSTRACT A watch movement comprises a barrel holding a mainspring, a third wheel, and a center seconds wheel.
  • the barrel directly drives the third wheel which in turn directly drives the center seconds wheel thereby eliminating the use of a center wheel.
  • An automatic winding mechanism is provided the winding mechanism comprising a rotor and a singlereduction gear interposed between a pinion mounted on the rotor and a ratchet on the barrel.
  • the watch movement is provided with most of the parts generally found in present day watches, but in the present case the so-called center wheel, i.e. grandeen, has been eliminated.
  • the power from the main spring being transmitted via the barrel through the usual wheel train to the escapement, the power now goes directly to the third wheel, i.e. petite emb.
  • the third wheel i.e. petite emb.
  • the unwinding rate is about double the usual rate.
  • the forces to be transmitted are reduced and accordingly the main spring can be made of lighter material.
  • the invention provides a watch movement wherein the barrel directly drives the third wheel which in turn directly drives the center seconds wheel.
  • the movement provides an automatic winding mechanism comprising a rotor and a single reduction gear between the rotor pinion and the barrel ratchet.
  • FIG. 1 is a partial sectional view showing the going train and the motion work of a watch movement according to the invention.
  • FIG. 2 is a cross-sectional view showing the basic parts in the automatic winding train.
  • l-] is the barrel containing the main spring.
  • the gear ring on the barrel engages with pinion l-3 which is integral with axle 1-2.
  • Fixed solidly to shaft 1-2 is the third wheel, i.e. petiteEnt, 14.
  • Third wheel l-4 meshes with pinion l-5 which is fixed to fourth wheel 1-8.
  • Wheel 1-8 in turn meshes with the escape pinion l-9.
  • Fourth wheel 1-8 and its pinion 1-5 are in the center of the movement and coaxial with the axle l-6 of the center seconds hand 1-7.
  • Axle l-6 is fixed to the fourth wheel I-8 and its pinion l-S so as to be driven thereby.
  • third wheel will rotate at the rate of 12 times per hour and the barrel will make 1 revolution in 2.4 hours, which as mentioned above is approximately twice the normal speed.
  • FIG. 2 shows a simplified automatic winding train wherein 2-1 is the barrel corresponding to 1-1 of FIG. 1 and 2-2 is the barrel ratchet.
  • the rotor is represented by 2-3 and in the present arrangement may comprise a free running eccentric weighted lever pivoted in the center of the movement.
  • Rotor center hub 2-11 has a pinion 2-4 friction fitted thereto.
  • a leaf spring 2-10 is fixed along one edge of the rotor and arranged to engage with the teeth of pinion 2-4 in a manner such that when the rotor 2-3 turns in one sense the leaf spring 2-10 drives pinion 24 while in the other sense the spring rides over the teeth of pinion 2-4.
  • Pinion 2-4 drives gear 2-5.
  • Gear 2-5 is fixed to pinion 2-6 and pinion 2-6 meshes with the barrel ratchet 2-2.
  • Winding stem 2-7 drives a crown pinion 2-8 that normally meshes with a winding wheel 2-9. Wheel 2-9 engages pinion 2-6 whereby the movement may be manually wound.
  • a watch movement comprising a barrel holding a mainspring, a third wheel and a center seconds wheel, wherein the barrel directly drives the third wheel which in turn directly drives the center seconds wheel thereby eliminating the use of a center wheel.
  • a watch movement as in claim 1 including an automatic winding mechanism, said mechanism comprising a rotor and a single reduction gear interposed between a pinion mounted on said rotor and a ratchet on the barrel.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
  • Toys (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
US484260A 1973-07-12 1974-06-28 Watch movement Expired - Lifetime US3901019A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3329773A GB1449151A (en) 1973-07-12 1973-07-12 Watch movement

Publications (1)

Publication Number Publication Date
US3901019A true US3901019A (en) 1975-08-26

Family

ID=10351106

Family Applications (1)

Application Number Title Priority Date Filing Date
US484260A Expired - Lifetime US3901019A (en) 1973-07-12 1974-06-28 Watch movement

Country Status (4)

Country Link
US (1) US3901019A (fr)
DE (1) DE2432926B2 (fr)
FR (1) FR2237235B1 (fr)
GB (1) GB1449151A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097755A (en) * 1975-05-14 1978-06-27 Seiko Koki Kabushiki Kaisha Construction of electromagnetic driving device
US5867454A (en) * 1996-02-10 1999-02-02 Seiko Instruments Inc. Automatic watch
US20040130972A1 (en) * 2002-11-20 2004-07-08 Mamoru Watanabe Self-winding timepiece having train wheel setting apparatus
USD739286S1 (en) * 2013-04-16 2015-09-22 Swatch Ltd Watch movement
USD748517S1 (en) * 2013-04-16 2016-02-02 Swatch Ltd Watch movement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1226392A1 (ru) * 1978-08-11 1986-04-23 Научно-исследовательский институт часовой промышленности Редуктор электронно-механических наружных часов с шаговым двигателем

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981055A (en) * 1955-05-27 1961-04-25 Montres Perret Et Berthoud Sa Self-winding time-piece

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR746608A (fr) * 1932-11-30 1933-06-02 Montre à remontage automatique
CH372600A (de) * 1960-09-10 1963-11-30 Straumann Inst Ag Armbanduhr mit gegen Stösse weitgehend gesicherter Unruh
DE1221988B (de) * 1964-03-13 1966-07-28 Kienzle Uhrenfabriken Ges Mit Kunststoffgangrad

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981055A (en) * 1955-05-27 1961-04-25 Montres Perret Et Berthoud Sa Self-winding time-piece

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097755A (en) * 1975-05-14 1978-06-27 Seiko Koki Kabushiki Kaisha Construction of electromagnetic driving device
US5867454A (en) * 1996-02-10 1999-02-02 Seiko Instruments Inc. Automatic watch
SG80580A1 (en) * 1996-10-02 2001-05-22 Seiko Instr Inc Automatic watch
US20040130972A1 (en) * 2002-11-20 2004-07-08 Mamoru Watanabe Self-winding timepiece having train wheel setting apparatus
US6814483B2 (en) * 2002-11-20 2004-11-09 Seiko Instruments Inc. Self-winding timepiece having train wheel setting apparatus
USD739286S1 (en) * 2013-04-16 2015-09-22 Swatch Ltd Watch movement
USD739288S1 (en) * 2013-04-16 2015-09-22 Swatch Ltd Watch movement
USD739287S1 (en) * 2013-04-16 2015-09-22 Swatch Ltd Watch movement
USD748517S1 (en) * 2013-04-16 2016-02-02 Swatch Ltd Watch movement

Also Published As

Publication number Publication date
DE2432926C3 (fr) 1979-04-05
DE2432926A1 (de) 1975-01-30
FR2237235A1 (fr) 1975-02-07
FR2237235B1 (fr) 1977-06-24
GB1449151A (en) 1976-09-15
DE2432926B2 (de) 1978-08-10

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