US3673790A - One-hour incremental watch setting device - Google Patents

One-hour incremental watch setting device Download PDF

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Publication number
US3673790A
US3673790A US47672A US3673790DA US3673790A US 3673790 A US3673790 A US 3673790A US 47672 A US47672 A US 47672A US 3673790D A US3673790D A US 3673790DA US 3673790 A US3673790 A US 3673790A
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US
United States
Prior art keywords
lever
gear
winding stem
watch
correction
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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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US47672A
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English (en)
Inventor
Francois W Gasser
Pierre L Girard
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Manufacture des Montres Rolex SA
Rolex SA
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Montres Rolex 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 Montres Rolex SA filed Critical Montres Rolex SA
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Publication of US3673790A publication Critical patent/US3673790A/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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/026—Mechanical devices for setting the time indicating means by making use of the winding means for several clockworks or pairs of hands and/or supplementary functions
    • 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
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/226—Arrangements for indicating different local apparent times; Universal time pieces three-dimensionally shaped, e.g. terrestrial globes, cylinders and the like

Definitions

  • ABSTRACT An apparatus for setting the hands of a watch having a three position stem in which the middle position is for adjusting only the hour hand, the outer position is the normal time setting position for adjusting both the minute and hour hands as in a normal watch, and the inner position is the normal winding position.
  • the present invention relates to watch movement for setting the hands of a watch; more particularly, it is concerned with a watch movement for setting only the hour hand without affecting the position of the minute hand.
  • the object of the present invention is to create a mechanism of the aforementioned type, but of more simple design and in which the hour correction position would correspond to the middle position on the stem, while the time setting position would correspond to the up position.
  • Another object of the present invention is a watch movement containing a time setting mechanism which consists of a pull-lever design to allow correction of the hour hand only, in a third position of the stem winder.
  • the watch movement according to the present invention is characterized in that the mechanism has a moving lever for hour correction, which lever rotates around a counter-axle for time setting, which is engaged with the sliding sprocket in the time setting position and the hour correction position, since this lever has at least one indented disc engaged with the time setting counter shaft and since the pull lever and the sliding sprocket lever are shaped in such a way that the latter remains in the same position when the stem slips from its middle position to its outside position, but does carry the sliding sprocket when the stem goes from the middle position to the inside position, because the correction lever is directly triggered by the pull lever when the stem slips from the middle position to the outside position.
  • FIG. I is a partial plan as seen from above;
  • FIG. 2 is a cross section along line lI-Il of FIG. I;
  • FIG. 3 is a cross section along line III-III of FIG. 2.
  • the watch movement as shown in the drawing applies, for instance to a wrist watch.
  • sheath 2 In the center of the plate 1 (FIG. 2), sheath 2 is mounted which fits in a main shaft (not shown) and has at its top extremity the minute hand 3; this minute hand appears above the face 4 which is fastened to the plate 1 in the usual fashion.
  • the hours barrel wheel 5 pivots on sheath 2. It is engaged with the teeth of the minute wheel sprocket 6, which is encased in a casing in the plate; the teeth of wheel 6 are engaged with sheath 2.
  • the barrel of the hour wheel 5 does not bear the hour hand, but guides a support disc 7 which, in turn presents a barrel coaxial to that of the hour wheel, crossing the center aperture of the face 4 and bearing at its top extremity the hour hand 8.
  • the support disc 7 contains a peripheral groove 9, and on its underside, a casing 10 in the shape of a cylinder.
  • the barrel of wheel 5 bears a grooved ring 11 of a diameter slightly wider than that of the barrel.
  • These grooves can be triangular, for example, or in any other acceptable shape, since the teeth are shorter than the case is deep.
  • a spring wedge 12 in the shape of a spiral, is wedged in the casing 10 of the disc 7 in such a way that its free end fits the teeth of part 11.
  • This spring is fastened with a pin 17, to the bottom of casing 10. Under normal conditions, it insures the coupling of the two discs 5 and 7. Therefore the main axle triggers the part 2 which sets wheel 6 and barrel wheel 5 in motion which in turn move the hour hands through the disc 7, thanks to the above mentioned springy coupling.
  • the support disc 7 also moves an intennediary disc 13, which pivots on a screw 14 set in the plate 1.
  • This watch movement is designed with a stem winder mechanism, for time setting and correction, made up of several elements assembled in normal fashion.
  • this mechanism contains a stem winder 15, set radially; a winding sprocket 16 which pivots on a cylindrical end of stem 15 and is held in place axially in a notch of the plate I; a sliding sprocket 18 and correction wheel or gear 18a moving axially upon a square of the stem 15; a counter shaft 19 which pivots upon a notch of the plate I in such a position that when the stem is in time setting position, the axial teeth of sprocket l8 grip the teeth of sprocket 16; a pull lever 20; a lever 21; a pull lever spring 22; and a lever spring (not shown), all these functioning as usual.
  • the lever 21, called hereafter the sliding sprocket lever, is an elongated part, one end of which is slipped into the central ringshaped throat of the sliding sprocket 18, while the other end (not shown) pivots around a fixed axis and consisting for instance of a head screw imbedded in an aperture of the plate. As in standard watch movements, this lever is made of a piece of flat steel sheet cut to the desired shape.
  • the sliding sprocket lever 21 and the pull lever 20 are on the same level, and the pull lever cooperates through a point 20a with a section of the lever 21 which will be described in detail later.
  • the pull lever also has a projection 30 which cooperates with the end of the odd shaped arm formed by the pull lever spring 22, this extremity being cut into three rounded slots intended to determine the three positions of the pull lever 20 and therefore the three positions of the stem winder 15.
  • the mechanism as described also contains a correction lever 23 which pivots around the same axis as the counter shaft 19.
  • This lever is in the shape of an elongated triangle one peak of which coincides with the axis of the counter shaft 19.
  • One of the other two peaks has a projection 24 which cooperates with a ramp 25, formed by the edge of pull lever 20, and the third peak carries a gear 26 which pivots on projection 27.
  • the gear 26 is beneath the lever 23 and engages the gear or setting wheel 19a.
  • the lever 23 is also acted on by a spring wire 28 which pivots lever 23 constantly in a clockwise direction as seen on FIG. 1. It can be seen that in the position shown in FIG. 1, the gear 26 is pressed against the teeth of sprocket 13 by the action of spring 28.
  • the position of the corrective mechanism as shown in the drawing is the median position.
  • a rotation of the crown (not shown) at the outer end of stem 15, moves the disc 7 through the teeth 9.
  • the spring 12, can easily be selected so its elastic resistance will be quite low, and so that a torque exerted upon teeth 9 will always rotate the disc 7 in relationship to the hours wheel 5, rather than the entire mechanism made up by the disc 7, wheel 5, minute wheel 6 and the sheath 2 around the main shaft.
  • only the hour hand 8 moves. Therefore, it is easy to effect a change of the hour hand of one or several hours, without affecting the minute hand.
  • the grooves of ring 11 should be preferably 12in number.
  • the disc 7 presents in relationship to wheel 5, 12 favored positions spaced 30 apart, which automatically brings the hour hand in a position of a given number of whole hours sequences from the starting position.
  • the pull lever 20 pivots around screw 29, and the projection 30 slips into the upper notch of spring 22.
  • the pivoting point (not shown) of the sliding sprocket lever 21 must be carefully positioned relative to the pivoting point 29 of pull lever 20. In fact the line joining these two pivoting points must pass over the contact point between pull lever 20 and lever 21 when these parts are in the position represented in FIG. 1.
  • the point 20a of the pull lever slides along the portion 21a of the levers edge towards the pivoting axis of that lever.
  • the contact point between these two points moves in a direction roughly parallel to the axis of the stem winder, which means that the lever 21 itself pivots counterclockwise and moves the sprocket 18 until its teeth engage the corresponding Breguet teeth of the winders sprocket.
  • portion 210 of the sliding sprocket lever's edge and also the point 20a of the pull lever should have roughly the shape as indicated in the drawing, although a slightly different shape for each would be equally suitable.
  • the sliding sprocket lever 21 has at the extremity of the portion 21a, an arc-shaped notch 31 which is cut in the edge thereof and oriented in the position shown in FIG. 1; it stretches concentrically to the pivoting point 29 of the pull lever 20.
  • the lever 21 tends to pivot in the other direction, but when the angle in arc 21b formed at the other extremity of notch 31 hits against the point 20a of the pull lever 20, the sliding sprocket lever is again set in motion with the pull lever and finally finds itself, when the projection 30 slips into the inside notch of spring 22, in the position shown in FIG. 1.
  • this movement is effected without having to displace the lever 20 or the sliding sprocket lever 21.
  • the ramp 25 comes in contact with projection 24 and causes the correction lever 23 to pivot, so that the counter shaft 26 disengages itself from the teeth of disc 13 and engages the counter shaft 32 which itself is engaged with the minute wheel 6. If the stem 15 is turned around its axis the sliding sprocket 18 through correction wheel 18a engages gear or setting wheel 19a, which is engaged by sprocket 26. Through the counter shaft 32 and the minute wheel 6, the hour and the minute hands 8 and 3 are driven as during a standard setting.
  • the correction mechanism could be conceived differently than that of the drawing.
  • the intermediary disc 13 it would be possible, in a simplified version, to do away with the intermediary disc 13. It would suflice to set the axis of the lever 23 in such a way that the sprocket 26 engages directly with the teeth 9 of disc 7, when the stem is set for correction. This set up would present the advantage of a greater simplicity.
  • the counter sprocket 32 could be taken out, andthe counter shah 26 so aimed that it could come into direct contact with the teeth of the minute wheel 6.
  • This counter shaft could for example be a double one which could move with the disc 13 and with the wheel 6, even though these two discs are not on the same level.
  • two counter shafts like No. 26, could be mounted upon the lever 23, kept in engaged position, either one with the other or both with the counter shaft 19 for hour setting. Eventually these two counter shafts could be directly engaged, one with the minute wheel in one of the positions of the lever 23, and the other with the teeth 9 of support wheel 7 in the other position of the lever 23.
  • the coupling of disc 7 and the hour barrel wheel 5 could be created by using, instead of the spring blade 12 set in the casing of disc 7 with the grip 17, a spring wire in the shape of a horse shoe with elbows, these elbows being wedged between two pairs of teeth diametrically set in relationship to the teeth of the ring 11, the median part of this spring wire held in place by the sides of casing 10.
  • that casing should not be of circular shape set in such a way as to block the middle part of the spring wire while leaving to the two elbows enough room to go over the teeth of ring 1 1, when an hour correction is being effected.
  • the main advantage of the mechanism as described is that it is possible to bring the stem winder from the hour correction position, to that where it is normally set, and which has been described as being the winding position, without going through the time setting position.
  • This result is derived because the hour correction position is the median position on the stern, while the time setting position is the outside position and the normal winding-position is the inside position.
  • the two levers function independently from each other but with different parts of the pull lever, and each of the levers is designed so they will move within two positions only when the stem is shifted from one, to the other three positions possible.
  • the mechanism as above described can therefore be utilized in electric or electronic watches, in which the necessary energy is provided by a battery.
  • these watches are generally equipped with a stem, which, while it does not function as winder of the main spring, can nevertheless be designed for several settings, each corresponding to a particular function.
  • the inside position could be a neutral zero position or even a position which by rotating it, provided proper apparatus was employed, could act to correct a date or calendar mechanism.
  • a watch having a watch movement comprising a winding stem movable radially with respect to said watch movement, between a first, a second and a third position, a pull lever pivotally mounted about a fixed axis and operatively connected to said winding stem, a correction lever operatively connected to said pull lever, a correction wheel engaging a square portion of said winding stem and operatively connected to said correction lever, a setting wheel pivotally mounted about a fixed axis and engaging said correction wheel when said winding stem is in one of said first and second positions, wherein said correction lever is pivotally mounted about the same axis as said setting wheel and said correction lever has associated therewith a toothed gear, said toothed gear engaging said setting wheel, minute gear means to set both a minute and an hour hand, and hour gear means to set said hour hand alone without displacing said minute hand, said correction lever being operatively connected to said pull lever to provide engagement of said toothed gear with said minute gear means when said winding stem is in said first position and to provide
  • a watch having a watch movement comprising in combination, a winding stem, first gear means operatively associated with said winding stem to set both a minute and an hour hand of said watch when said winding stem is in a first position; first lever means having associated therewith at least one toothed gear, said toothed gear being engageable with said first gear means when said winding stem is in a second position; second lever means connected to said winding stem and operatively associated with spring means and said first lever; third lever means connected to said winding stern and operatively associated with said second lever means when said winding stem is in a third position; second gear means carrying I thereon means for supporting said hour hand, said support means being coaxially disposed with said second gear means; and spring means disposed between said support means and said second gear means.
  • said first lever means carries third gear means maintained in constant engagement with said first gear means; said third gear means engaging a fourth gear means pivoting around a fixed axis in said second and third positions of said winding stem; said third gear means further engaging said support means in said second and third positions; and said third gear means engaging fifth gear means operatively connected to said minute hand in said first position of said winding stem.
  • said spring means comprises an elongated elastic element, one part of which is rotatably engaged with one of said support or second gear means; and means disposed on the other of said support or second gear means to elastically engage another part of said spring means.
  • said elastic engagement means comprises 12 to 24 triangular teeth, the base of said teeth being larger than their tips.
  • said elongated elastic element comprises a thin plate or a spring wire which engages said teeth, the central part of which is rotatably connected with said other of said support or second gear means.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US47672A 1969-06-23 1970-06-19 One-hour incremental watch setting device Expired - Lifetime US3673790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH957569A CH513446A (fr) 1969-06-23 1969-06-23 Mouvement de montre

Publications (1)

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US3673790A true US3673790A (en) 1972-07-04

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Application Number Title Priority Date Filing Date
US47672A Expired - Lifetime US3673790A (en) 1969-06-23 1970-06-19 One-hour incremental watch setting device

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US (1) US3673790A (fr)
AT (1) AT308651B (fr)
CH (2) CH513446A (fr)
DE (1) DE2028659A1 (fr)
FR (1) FR2047039B3 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785141A (en) * 1972-01-13 1974-01-15 Suwa Seikosha Kk Mechanism for a timepiece having a plurality of time display
US3844107A (en) * 1972-07-24 1974-10-29 Ebauches Sa Timepiece
US3866408A (en) * 1973-04-04 1975-02-18 Zenith Time Sa Timepiece setting mechanism
US3972177A (en) * 1974-04-08 1976-08-03 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Control mechanism for time setting and similar functions
US4034553A (en) * 1975-07-11 1977-07-12 Timex Corporation Stem detent arrangement for wristwatch
DE3011667A1 (de) * 1980-03-26 1981-10-01 Kieninger & Obergfell Fabrik für technische Laufwerke und Apparate, 7742 St Georgen Elektrische uhr mit analoger zeitanzeige
JPS5794877U (fr) * 1980-12-01 1982-06-11
US6773157B1 (en) * 2002-12-30 2004-08-10 Timex Group B.V. Setting assembly for an analog timepiece
US20060140064A1 (en) * 2004-12-28 2006-06-29 Taichi Haga Reset lever apparatus and electronic timepiece having the same
US11340558B2 (en) * 2016-07-12 2022-05-24 Bremont Watch Company Mechanism for selecting and actuating functions of a timepiece movement

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785141A (en) * 1972-01-13 1974-01-15 Suwa Seikosha Kk Mechanism for a timepiece having a plurality of time display
US3844107A (en) * 1972-07-24 1974-10-29 Ebauches Sa Timepiece
US3866408A (en) * 1973-04-04 1975-02-18 Zenith Time Sa Timepiece setting mechanism
US3972177A (en) * 1974-04-08 1976-08-03 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Control mechanism for time setting and similar functions
US4034553A (en) * 1975-07-11 1977-07-12 Timex Corporation Stem detent arrangement for wristwatch
DE3011667A1 (de) * 1980-03-26 1981-10-01 Kieninger & Obergfell Fabrik für technische Laufwerke und Apparate, 7742 St Georgen Elektrische uhr mit analoger zeitanzeige
JPS5794877U (fr) * 1980-12-01 1982-06-11
US6773157B1 (en) * 2002-12-30 2004-08-10 Timex Group B.V. Setting assembly for an analog timepiece
US20060140064A1 (en) * 2004-12-28 2006-06-29 Taichi Haga Reset lever apparatus and electronic timepiece having the same
US11340558B2 (en) * 2016-07-12 2022-05-24 Bremont Watch Company Mechanism for selecting and actuating functions of a timepiece movement

Also Published As

Publication number Publication date
FR2047039B3 (fr) 1973-01-12
FR2047039A7 (fr) 1971-03-12
CH957569A4 (fr) 1971-01-29
CH513446A (fr) 1971-01-29
DE2028659A1 (de) 1971-01-07
AT308651B (de) 1973-07-10

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