US3491258A - Oscillatory system with two turning mass bodies - Google Patents

Oscillatory system with two turning mass bodies Download PDF

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Publication number
US3491258A
US3491258A US702905A US3491258DA US3491258A US 3491258 A US3491258 A US 3491258A US 702905 A US702905 A US 702905A US 3491258D A US3491258D A US 3491258DA US 3491258 A US3491258 A US 3491258A
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US
United States
Prior art keywords
spring
bodies
torsion
mass
strip
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
US702905A
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English (en)
Inventor
Roland Siefert
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.)
Kienzle Uhrenfabriken GmbH
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Kienzle Uhrenfabriken GmbH
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Filing date
Publication date
Priority claimed from DE19671673664 external-priority patent/DE1673664B1/de
Application filed by Kienzle Uhrenfabriken GmbH filed Critical Kienzle Uhrenfabriken GmbH
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Publication of US3491258A publication Critical patent/US3491258A/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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • 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
    • 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
    • Y10T74/18—Mechanical movements
    • Y10T74/18856—Oscillating to oscillating

Definitions

  • the invention is a mechanical oscillator, electrically driven, for timepieces and of the type having two mass bodies connected together by a torsion or restorative spring member and turnable in counter phase, so as to reduce reaction against mounting bearings and consequent dissipation of energy.
  • the nodal portion of the torsion member is connected by a separate spring to the works frame on which the oscillator is mounted.
  • the two mass bodies are suitably connected with each other by a small torsion strip bar or pin.
  • the torsion strip and frame are connected to each other in the neighborhood of the node of oscillation by means of a spring 'with the result that the mounting point of the oscillator spring may undergo turning movement.
  • the spring which effects the connection between the torsionstrip and frame in operational bearing position and at nul position of the oscillatory system should be tension-free. Hence the stress in the system is minimized.
  • a bearing support for mass bodies is not necessary. Owing to eventual shocks to which the system will be subjected it is, however, preferable to support the bodies by thrust bearings. Also the upper mass body can be held against lateral movement by ball bearings. For an axially horizontal system both mass bodies are mounted on ball bearings. As explained later herein this will minimize bending under the force of gravity.
  • only one of the masses is provided with permanent magnets which cooperate with the exciting and drive coils of an electronically controlled drive.
  • the rough balancing to the requisite frequency is obtained by alteration of mass of the bodies as by drilling out a part of the body, while fine regulation with respect to the mounting point of the torsion bar is accomplished by variation of the effective length of the bar.
  • This variation can be obtained with two cam plates clamped on opposite faces of the torsion strip or bar by an adjustable screw.
  • a helical spring may be used to connect the two mass bodies to each other.
  • a mounting spring connects the frame to the helical spring near the node of the latter and at its circumference.
  • two bodies side by side may be used and be connected to each other by a helical spring.
  • the latter consists of two helical spring portions which are produced by opening up a normal helical spring.
  • FIG. 1 shows a form of the invention having two turnable mass bodies connected to each other by a torsion strip.
  • FIGS. 1a and 112 show details of the connection between the system and a framework.
  • FIGS. 2a and 2b sho-w means for fine control of the frequency of the system.
  • FIGS. 3a and 3b shows a form of the invention having a helical spring instead of a torsion strip.
  • FIGS. 4a and 4b show a system with mass bodies axially side by side and FIG. shows radial bearings for mounting the system.
  • FIG. 1 the two mass bodies 1 and 2 are connected to each other by a torsion spring strip or bar 3.
  • the node of oscillation for this system which operates with small amplitude and a frequency between and 100 c.p.s. is situated in the general vicinity of point 4.
  • In balancing out the system to the nominal frequency only one of the bodies is adjusted. In the course of this one sided adjustment the location of the node is changed. That is to say, if the nodal point had been exactly at 4 before balancing, it is moved above or below the point 4.
  • the connection between the torsion strip 3 and the framework 6 (FIGS. 1a and 1b) is made through a serpentine spring 5, which connection permits the fastening point 4 or zone to move corresponding to the turning movement of the spring.
  • Such turning movement of the end of spring 5 arises when the location of the node of oscillation does not coincide with the attachment point 4.
  • the spring 5 can be fastened as by spot welding on the torsion strip 3.
  • the mounting of spring 5 on the frame 6 is done free from strain with the oscillatory system in nullage by a clamping or cementing in situ of the spring 5 to the frame at 7 so that the position of the outer end of the spring is not altered during the process.
  • the upper mass body half is provided with permanent magnets 12 cooperating with inductor coils 13 and 14 as the exciting and drive coils of a conventional electronic drive system.
  • a plate 15 provides shielding to reduce the effect of stray fields.
  • the various parts are mounted on a bushing 10.
  • the lower body which is suitable adjusted to nominal frequency consists essentially of two small blocks 16 mounted on a bush 17.
  • the connections of the strip 3 with the bodies 1 and 2 are carried out by widened ends 8 and 9 of the strip 3 stuck in slits 11 and 18 in bushes 10' and 17.
  • the connections are made secure by parts 19 screwed into the bushes.
  • the upper body 1 can be provided with a radial ball bearing as in FIG. 5. If the system operates about a horizontal axis both bodies should be supported against downward and lateral movement by bearings in order to minimize sagging of the torsion strip.
  • FIGS. 2a and 2b A fine adjustment of the frequency of the system can be attained by shortening or lengthening the effective length of the torsion strip.
  • FIGS. 2a and 2b A means for doing this is shown in FIGS. 2a and 2b wherein two eccentric cam shaped plates 23 are mounted on opposite faces of the strip 3 and can be turned and drawn together by means of a screw 24 so that they engage tightly on the opposite faces of the strip 3 selective distances along the strip according to position of turning of the plates.
  • the mid portion of the torsion strip be stitfenend over variable lengths due to shape of the plates engaging thereon as a result of the clamping so as to vary the effective length of the strip 3.
  • the mounting of the spring 5 on the torsion strip is accomplished by a circumferential groove in the screw 24 in which the forked end of the Spring 5 interengages.
  • a helical spring 27 may be used as in FIG. 3a, the remaining features being very much as in FIG. 1, with the connection of the nodal portion of spring 27 to the frame being carried out by a spring 25. Owing to the resilience of the spring 25 the attachment point need not be exactly at the node.
  • the two mass bodies need not be coaxial but may be side by side at 29 as in FIG. 4a.
  • the bodies 29 are connected by interconnected helical springs 28' and 2-8" which are really two legs of an ordinary helical spring opened out in the middle to provide connecting tangential portion 228".
  • the legs are connected at their terminal ends to the oscillatory mass bodies 29.
  • the node of oscillation is near the point 4 which is connected to the frame 6, 'by a spring 30.
  • Both mass bodies carry permanent magnets 32 cooperating with a common coil 31.
  • the coil 31 is an exciter end drive coil of a conventional electronically controlled electric drive system.
  • a shielding plate 33 is carried on each mass body. If the system is to oscillate about vertical axes only one thrust bearing need be provided for each body.
  • both mass bodies may carry a drive pawl for driving a stepping wheel in a work train.
  • pawls may be provided on almost any part of any of the turning bodies for taking off power to the train.
  • a mechanical oscillator for an electrically powered timepiece comprising two turnable mass bodies and a torsion spring member connecting the two bodies, mag netic means for setting a least one of the bodies in turning oscillation, the masses of the bodies and the elasticity and length of the spring member being so related that at resonant frequency the two bodies are in counter phase and a nodal point exists on the member; a frame for carrying said bodies, and a spring secured to the frame and directly to the torsion spring member near said nodal point for steadying the member and permitting limited movement of the member whereby movement of the torsion spring member at the zone of securement between the member and spring during oscillation may be absorbed by the spring means and obviate the need for fixing the spring to the frame at the exact nodal point.
  • An oscillator as claimed in claim 4 said member having opposite side faces between the bodies, and cam shaped stiff plates disposed against the respective faces and turnably mounted on the member to provide variable lengths of engagement along the faces to effect a variable length of clamping by the plates to render said length substantially stiff.
  • an oscillator as claimed in claim 7 the member having like counter wound parallel legs and an integral tie piece substantially tangential to both legs and con- 5 6 necting the latter, the bodies being axially parallel, each 3,217,485 11/1965 Musseu et a1. 582 connected to a leg, each body being provided with said 3,214,662 10/1965 De Wolf 318138 magnetic means, and said spring being secured to said 3,192,488 6/1965 Faith et al 318-138 XR tie piece. 2,594,749 4/1952 Ehrat et a1. 31025 XR 9.
  • An oscillator as claimed in claim 2 wherein the spring is substantially strain-free when the oscillator is 5 FOREIGN PATENTS at nu11 880,355 5/ 1950 Germany.
  • An oscillator as claimed in. claim 1 said spring 516,115 2/ 1955 yhaving loops.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Springs (AREA)
  • Electric Clocks (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
US702905A 1967-02-03 1968-02-05 Oscillatory system with two turning mass bodies Expired - Lifetime US3491258A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEK0061342 1967-02-03
DE19671673664 DE1673664B1 (de) 1967-02-03 1967-10-19 Schwingsystem mit zwei Drehmassen

Publications (1)

Publication Number Publication Date
US3491258A true US3491258A (en) 1970-01-20

Family

ID=25754426

Family Applications (2)

Application Number Title Priority Date Filing Date
US702905A Expired - Lifetime US3491258A (en) 1967-02-03 1968-02-05 Oscillatory system with two turning mass bodies
US768302A Expired - Lifetime US3546953A (en) 1967-02-03 1968-10-17 Oscillatory system with two turnable masses

Family Applications After (1)

Application Number Title Priority Date Filing Date
US768302A Expired - Lifetime US3546953A (en) 1967-02-03 1968-10-17 Oscillatory system with two turnable masses

Country Status (5)

Country Link
US (2) US3491258A (de)
CH (3) CH59468A4 (de)
DE (1) DE1548150B1 (de)
FR (2) FR1552664A (de)
GB (2) GB1158971A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50124969U (de) * 1974-03-29 1975-10-14
JPS5114064A (ja) * 1974-07-25 1976-02-04 Seikosha Kk Nejirifurikosochi
US3952217A (en) * 1973-09-25 1976-04-20 The Perkin-Elmer Corporation Drive for scanning mirror
US3986336A (en) * 1973-09-07 1976-10-19 Egon Heim Improvement in or for a torsion pendulum clock
JPS52110469U (de) * 1977-02-17 1977-08-22
US4044283A (en) * 1975-10-22 1977-08-23 Schiller Industries, Inc. Electromechanical resonator
FR2444283A1 (fr) * 1978-12-14 1980-07-11 Onera (Off Nat Aerospatiale) Perfectionnements aux dispositifs vibrants pour le traitement d'un faisceau optique
US5717660A (en) * 1994-09-07 1998-02-10 Seiko Clock Inc. Rotary decoration driving device
DE10350445A1 (de) * 2003-10-29 2005-06-02 Braun Gmbh Elektrische Antriebseinheit zur Erzeugung einer oszillierenden Bewegung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1805777A1 (de) * 1968-10-29 1970-05-21 Kienzle Uhrenfabriken Gmbh Schwingsystem

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594749A (en) * 1944-12-13 1952-04-29 Patelhold Patentverwertung Mechanical vibration system
DE880355C (de) * 1940-07-03 1953-06-22 Siemens Ag Messeinrichtung fuer Hochfrequenzstroeme
US2728188A (en) * 1950-10-01 1955-12-27 Hettich Hugo Balance wheel and hairspring assembly
US3192488A (en) * 1961-10-10 1965-06-29 Winston O Faith Multiphase electromechanical oscillator
US3214662A (en) * 1962-07-30 1965-10-26 Gen Electric Electro-mechanical oscillation sustaining drive system
US3217485A (en) * 1964-03-30 1965-11-16 Harvey Aluminum Inc Wave energy method and velocity regulation device
US3308313A (en) * 1966-01-11 1967-03-07 Movado Montres Torsion oscillator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068188B (de) * 1959-10-29
DE251558C (de) *
US329090A (en) * 1885-10-27 Tuning-fork
US2581963A (en) * 1942-01-05 1952-01-08 Herburger Soc Ets Reed for electrical music instruments
US2520520A (en) * 1948-01-28 1950-08-29 Dale Service Corp Marine marker
NL126779C (de) * 1958-11-21
DE1227843B (de) * 1961-03-14 1966-10-27 Suisse De Rech S Horlogeres La Mechanischer Oszillator fuer eine elektronische Kleinuhr
CH999762A4 (de) * 1962-08-22 1964-08-14
US3322016A (en) * 1963-06-24 1967-05-30 Jeco Kk Added mass type circular tuning fork
FR1437972A (fr) * 1965-06-24 1966-05-06 Montres Perret Et Berthoud Sa Oscillateur à torsion pour pièces d'horlogerie
US3339007A (en) * 1965-07-28 1967-08-29 Okonite Co Power cables with an improved moisture barrier
DE1279556B (de) * 1966-01-22 1968-10-03 Kienzle Uhrenfabriken Gmbh Fortschaltvorrichtung fuer Stimmgabelschwinger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE880355C (de) * 1940-07-03 1953-06-22 Siemens Ag Messeinrichtung fuer Hochfrequenzstroeme
US2594749A (en) * 1944-12-13 1952-04-29 Patelhold Patentverwertung Mechanical vibration system
US2728188A (en) * 1950-10-01 1955-12-27 Hettich Hugo Balance wheel and hairspring assembly
US3192488A (en) * 1961-10-10 1965-06-29 Winston O Faith Multiphase electromechanical oscillator
US3214662A (en) * 1962-07-30 1965-10-26 Gen Electric Electro-mechanical oscillation sustaining drive system
US3217485A (en) * 1964-03-30 1965-11-16 Harvey Aluminum Inc Wave energy method and velocity regulation device
US3308313A (en) * 1966-01-11 1967-03-07 Movado Montres Torsion oscillator

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986336A (en) * 1973-09-07 1976-10-19 Egon Heim Improvement in or for a torsion pendulum clock
US3952217A (en) * 1973-09-25 1976-04-20 The Perkin-Elmer Corporation Drive for scanning mirror
JPS50124969U (de) * 1974-03-29 1975-10-14
JPS5114064A (ja) * 1974-07-25 1976-02-04 Seikosha Kk Nejirifurikosochi
JPS553676B2 (de) * 1974-07-25 1980-01-26
US4044283A (en) * 1975-10-22 1977-08-23 Schiller Industries, Inc. Electromechanical resonator
JPS52110469U (de) * 1977-02-17 1977-08-22
FR2444283A1 (fr) * 1978-12-14 1980-07-11 Onera (Off Nat Aerospatiale) Perfectionnements aux dispositifs vibrants pour le traitement d'un faisceau optique
US5717660A (en) * 1994-09-07 1998-02-10 Seiko Clock Inc. Rotary decoration driving device
DE10350445A1 (de) * 2003-10-29 2005-06-02 Braun Gmbh Elektrische Antriebseinheit zur Erzeugung einer oszillierenden Bewegung
US20080185922A1 (en) * 2003-10-29 2008-08-07 Braun Gmbh Electric Drive Unit For Generating An Oscillating Displacement
US7675203B2 (en) 2003-10-29 2010-03-09 Braun Gmbh Electric drive unit for generating an oscillating displacement

Also Published As

Publication number Publication date
CH1432768A4 (de) 1974-04-30
GB1170380A (en) 1969-11-12
CH59468A4 (de) 1970-11-30
FR1552664A (de) 1969-01-03
US3546953A (en) 1970-12-15
DE1548150B1 (de) 1970-03-19
CH507540A (de) 1970-11-30
GB1158971A (en) 1969-07-23
FR96012E (de) 1972-05-19

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