US3411368A - Magnetic driving device - Google Patents

Magnetic driving device Download PDF

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Publication number
US3411368A
US3411368A US599208A US59920866A US3411368A US 3411368 A US3411368 A US 3411368A US 599208 A US599208 A US 599208A US 59920866 A US59920866 A US 59920866A US 3411368 A US3411368 A US 3411368A
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Prior art keywords
wheel
blade
magnetic
driving device
magnetic driving
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Expired - Lifetime
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US599208A
Inventor
Schneiter Ali
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Ebauches SA
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Ebauches SA
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/04—Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
    • G04C3/104—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the pawl or the ratched-wheel
    • G04C3/105—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the pawl or the ratched-wheel pawl and ratched-wheel being magnetically coupled
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/08—Design features of general application for actuating the drive
    • G06M1/10—Design features of general application for actuating the drive by electric or magnetic means
    • G06M1/102—Design features of general application for actuating the drive by electric or magnetic means by magnetic or electromagnetic means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1502—Escapement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1553—Lever actuator
    • Y10T74/1555—Rotary driven element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/22—Miscellaneous

Definitions

  • MAGNETIC DRIVING DEVICE Filed Dec. 5, 1966 INVENTOR All J'CH/VE/TER BY a/ovzl ATTORNEY United States Patent 3,411,368 MAGNETIC DRIVING DEVICE Ali Schneiter, Neuchatel, Switzerland, assignor to Ebauches S.A., Neuchatel, Switzerland, a firm of Switzerland Filed Dec. 5, 1966, Ser. No. 599,208 Claims priority, application Switzerland, Dec. 10, 1965, 17,093/ 65 2 Claims. (Cl.
  • a magnetic driving device comprising, a bifurcated member, a rotatable member, a toothed member rigid with said rotatable member and positioned between the bifurcations of the rotatable member, the oscillating member and toothed member being formed from magnetic material and constituting a magnetic way, and a pawl carried by said oscillating member and drivingly engageable with the toothed member only on initial actuation of the device to drive the wheel.
  • the present invention relates to a magnetic driving device in which an oscillating member drives step-bystep, through a magnetic way, a rotatable member.
  • Such devices which are known per se, are generally used as counting devices, in electric timepieces comprising a motor regulating member, the counting wheel being connected to the indicating members of the time, which are driven by this wheel.
  • the object of the present invention is to remove this drawback.
  • the device according to the invention is characterized by the fact that the oscillating member carries at least a pawl intended to cooperate with the toothing of a member rigid with the rotatable member, when the device is starting its operation, while operating light hearing contact, without producing any pull effect on the said toothing, when the normal run of the device is reached.
  • the drawing shows, by way of example, one embodiment of the object of the invention.
  • the figure is a perspective view of a magnetic counting device for an electric timepiece.
  • the device represented comprises a counting wheel 1, constituted by a perforated disc provided with teeth 11:, mounted on a shaft 2 carrying a gear 3 driving the gears and wheels, which in turn drive the indicating members (hands) of the timepiece which indicate the hours and the minutes, none of which are shown.
  • the peripheral part of the disc 1 is made of magnetic material so as to constitute a magnetic track, along the line indicated by the arrows 4, with which cooperate the two branches of a permanent magnet 5 rigid with a vibrating member-constituted by an elastic blade 6.
  • the device which efiects the vibrations of the blade 6 has not been represented, being out of the scope of the present invention.
  • the oscillating member is provided with an arm 9 secured to the magnet 5, at the extremity of which is mounted a thin elastic blade 10 the free extremity of which is situated on the path of the extremities of the teeth In.
  • the free extremity of the elastic blade 10 exerts a push in the direction of the arrow 11 on the teeth 1a, producing the starting of the wheel 1.
  • the relative position of the several elements is such that the elastic blade 10 oscillates only slightly, its extremity accompanying the teeth 1a of the wheel 1 without reaching them, so that it does not exert any pull on the wheel.
  • the blade 10 slides on the back of the teeth 1a.
  • the length of the blade 10 and its elasticity are chosen in such a way that the pressure, directed substantially radially, exerted by the blade on the top of the teeth, has no troubling effect on the running of the device.
  • the counting device stops always in a determined position of the wheel 1 relatively to the magnet 5, by reason of the magnetic effect of the magnet on the wheel, it is possible to determine the length of the blade 10 in such a way that, when the device starts to operate, the magnet 5 can come in vibration freely, without the blade acting on the teeth 1a, the push of the blade on these teeth occurring only after a certain amplitude of the oscillations of the vibrating member and being interrupted as soon as the normal running is reached.
  • a magnetic driving device comprising, a bifurcated oscillating member, a rotatable member, a toothed member rigid with said rotatable member and positioned between the bifurcations of the rotatable member, the oscillating member and the toothed member being formed from magnetic material and constituting a magnetic way,
  • said pawl comprises a resilient blade secured at one of its ends to said oscillating member, the opposite free end of said blade acting on said toothed member when the device starts its operation.

Description

Nov. 19, 1968 A. SCHNEITER 3,411,368
MAGNETIC DRIVING DEVICE Filed Dec. 5, 1966 INVENTOR All J'CH/VE/TER BY a/ovzl ATTORNEY United States Patent 3,411,368 MAGNETIC DRIVING DEVICE Ali Schneiter, Neuchatel, Switzerland, assignor to Ebauches S.A., Neuchatel, Switzerland, a firm of Switzerland Filed Dec. 5, 1966, Ser. No. 599,208 Claims priority, application Switzerland, Dec. 10, 1965, 17,093/ 65 2 Claims. (Cl. 74-142) ABSTRACT OF THE DISCLOSURE A magnetic driving device comprising, a bifurcated member, a rotatable member, a toothed member rigid with said rotatable member and positioned between the bifurcations of the rotatable member, the oscillating member and toothed member being formed from magnetic material and constituting a magnetic way, and a pawl carried by said oscillating member and drivingly engageable with the toothed member only on initial actuation of the device to drive the wheel.
The present invention relates to a magnetic driving device in which an oscillating member drives step-bystep, through a magnetic way, a rotatable member.
Such devices, which are known per se, are generally used as counting devices, in electric timepieces comprising a motor regulating member, the counting wheel being connected to the indicating members of the time, which are driven by this wheel.
When the operation is starting, it can occur that the oscillations of the oscillating member do not produce the starting of the rotatable member, which remains stationary. The object of the present invention is to remove this drawback.
The device according to the invention is characterized by the fact that the oscillating member carries at least a pawl intended to cooperate with the toothing of a member rigid with the rotatable member, when the device is starting its operation, while operating light hearing contact, without producing any pull effect on the said toothing, when the normal run of the device is reached.
The drawing shows, by way of example, one embodiment of the object of the invention.
The figure is a perspective view of a magnetic counting device for an electric timepiece.
The device represented comprises a counting wheel 1, constituted by a perforated disc provided with teeth 11:, mounted on a shaft 2 carrying a gear 3 driving the gears and wheels, which in turn drive the indicating members (hands) of the timepiece which indicate the hours and the minutes, none of which are shown.
The peripheral part of the disc 1 is made of magnetic material so as to constitute a magnetic track, along the line indicated by the arrows 4, with which cooperate the two branches of a permanent magnet 5 rigid with a vibrating member-constituted by an elastic blade 6. The device which efiects the vibrations of the blade 6 has not been represented, being out of the scope of the present invention.
During the movements of the vibrating member 6 and 3,411,368 Patented Nov. 19, 1968 Ice of the magnet 5 in the direction of the arrow 7, the wheel 1 is magnetically driven step-by-ste-p in the direction of the arrow 8.
However, when the device is starting, it could occur that the wheel 1 is not driven. In order to be sure the wheel 1 starts to rotate, the oscillating member is provided with an arm 9 secured to the magnet 5, at the extremity of which is mounted a thin elastic blade 10 the free extremity of which is situated on the path of the extremities of the teeth In. When the device starts to operate, the free extremity of the elastic blade 10 exerts a push in the direction of the arrow 11 on the teeth 1a, producing the starting of the wheel 1. When the device is in normal running condition, the relative position of the several elements is such that the elastic blade 10 oscillates only slightly, its extremity accompanying the teeth 1a of the wheel 1 without reaching them, so that it does not exert any pull on the wheel. During its movements in the direction opposite to the arrow 11, the blade 10 slides on the back of the teeth 1a. The length of the blade 10 and its elasticity are chosen in such a way that the pressure, directed substantially radially, exerted by the blade on the top of the teeth, has no troubling effect on the running of the device.
It is to be noted that, since the counting device stops always in a determined position of the wheel 1 relatively to the magnet 5, by reason of the magnetic effect of the magnet on the wheel, it is possible to determine the length of the blade 10 in such a way that, when the device starts to operate, the magnet 5 can come in vibration freely, without the blade acting on the teeth 1a, the push of the blade on these teeth occurring only after a certain amplitude of the oscillations of the vibrating member and being interrupted as soon as the normal running is reached.
As a modification, it will be possible to provide the arrangement in such a way that the blade 10, or any other pawl rigid with the oscillating member, does not act directly on the wheel 1, but on a ratchet wheel rigid with the wheel 1.
What I claim is:
1. A magnetic driving device comprising, a bifurcated oscillating member, a rotatable member, a toothed member rigid with said rotatable member and positioned between the bifurcations of the rotatable member, the oscillating member and the toothed member being formed from magnetic material and constituting a magnetic way,
. wherein said pawl comprises a resilient blade secured at one of its ends to said oscillating member, the opposite free end of said blade acting on said toothed member when the device starts its operation.
References Cited UNITED STATES PATENTS 2,606,222 8/1952 Clilford et a1. 310-21 2,762,222 9/ 1956 Clifford 741.5
MILTON KAUFMAN, Primary Examiner.
US599208A 1965-12-10 1966-12-05 Magnetic driving device Expired - Lifetime US3411368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1709365A CH444761A (en) 1965-12-10 1965-12-10 Magnetic drive device for watchmaking

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517230A (en) * 1968-08-16 1970-06-23 Melpar Inc Integral reed tuning fork
US3690191A (en) * 1970-10-22 1972-09-12 Siemens Ag Device for converting a reciprocating motion into a stepwise rotary motion
EP0280104A2 (en) * 1987-02-25 1988-08-31 Hengstler Gmbh Mechanical drum counter
US20030209239A1 (en) * 1997-06-10 2003-11-13 Rand Paul Kenneth Dispenser with doses' counter
CN104730897A (en) * 2013-12-23 2015-06-24 斯沃奇集团研究和开发有限公司 Optimized escapement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606222A (en) * 1947-08-26 1952-08-05 Clifford Cecil Frank Electric motor
US2762222A (en) * 1949-05-28 1956-09-11 Clifford Cecil Frank Magnetic escapement mechanism

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE671141C (en) * 1936-03-05 1939-02-02 Fraembs & Freudenberg Electrical exciter for generating mechanical vibrations for sieving devices u. like
NL142775B (en) * 1967-11-17 1974-07-15 Johannes Frederik Van Der Gies WALL RADIATOR SUPPORT WITH LONGLY SLIDING RADIATOR SUPPORT.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606222A (en) * 1947-08-26 1952-08-05 Clifford Cecil Frank Electric motor
US2762222A (en) * 1949-05-28 1956-09-11 Clifford Cecil Frank Magnetic escapement mechanism

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517230A (en) * 1968-08-16 1970-06-23 Melpar Inc Integral reed tuning fork
US3690191A (en) * 1970-10-22 1972-09-12 Siemens Ag Device for converting a reciprocating motion into a stepwise rotary motion
EP0280104A2 (en) * 1987-02-25 1988-08-31 Hengstler Gmbh Mechanical drum counter
EP0280104A3 (en) * 1987-02-25 1989-09-20 Hengstler Gmbh Mechanical drum counter
US20030209239A1 (en) * 1997-06-10 2003-11-13 Rand Paul Kenneth Dispenser with doses' counter
US7107986B2 (en) 1997-06-10 2006-09-19 Glaxo Group Limited Dispenser with doses' counter
US20060289008A1 (en) * 1997-06-10 2006-12-28 Rand Paul K Dispenser with doses' counter
US8245704B2 (en) 1997-06-10 2012-08-21 Glaxo Group Limited Dispenser with doses' counter
CN104730897A (en) * 2013-12-23 2015-06-24 斯沃奇集团研究和开发有限公司 Optimized escapement
CN104730897B (en) * 2013-12-23 2017-06-30 斯沃奇集团研究和开发有限公司 The escapement of optimization
RU2665845C2 (en) * 2013-12-23 2018-09-10 Те Свотч Груп Рисерч Энд Дивелопмент Лтд Optimized trigger mechanism

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CH1709365A4 (en) 1967-06-15
CH444761A (en) 1968-02-29
DE1286364B (en) 1969-01-02

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