US2908174A - Motion transformer - Google Patents

Motion transformer Download PDF

Info

Publication number
US2908174A
US2908174A US580813A US58081356A US2908174A US 2908174 A US2908174 A US 2908174A US 580813 A US580813 A US 580813A US 58081356 A US58081356 A US 58081356A US 2908174 A US2908174 A US 2908174A
Authority
US
United States
Prior art keywords
wire
vibrator
wheel
spring
teeth
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
US580813A
Other languages
English (en)
Inventor
Hetzel Max
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.)
Bulova Watch Co Inc
Original Assignee
Bulova Watch Co Inc
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 Bulova Watch Co Inc filed Critical Bulova Watch Co Inc
Application granted granted Critical
Publication of US2908174A publication Critical patent/US2908174A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • Y10T74/1529—Slide actuator
    • 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
    • Y10T74/1558—Grip units and features
    • 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
    • Y10T74/1558—Grip units and features
    • Y10T74/1584—Gripper mountings, slide
    • 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
    • Y10T74/21—Elements
    • Y10T74/2133—Pawls and ratchets
    • Y10T74/2141—Sliding pawls

Definitions

  • the present invention relates to a motion transformer.
  • the present invention relates to an electric timepiece incorporating a motion transformer capable of transforming the oscillations of a vibrator into rotary movement, the electric timepiece being of the type disclosed in copending applications Serial No. 436,949, filed June 15, 1954, now abandoned, Serial No. 547,510, filed November 17, 1955, now abandoned (said application Serial No. 547,510 being a continuation of application Serial No. 463,462, filed October 20, 1954, now abandoned), Serial No. 565,451, filed February 14, 1956, Serial No. 565,452, filed February 14, 1956, and Serial No. 570,958, filed March 12, 1956.
  • the objects of the present invention further include the provision of an electric timepiece which is composed of simple and ruggedly constructed elements which are very reliable in operation.
  • the present invention mainly consists in that improvement in a timepiece which incorporates a mechanism for transforming vibration into a rotary motion, the mechanism including a support means, rotary means mounted on the support means for rotation relative thereto, a vibrator mounted on the support means, driving means connected to the vibrator for movement therewith and frictionally engaging the rotary means for turning the latter, and means operatively associated with the rotary means for limiting the same to one direction of rotation.
  • Fig. 1 is an elevational view of one form of the invention
  • Fig. 2 is a section on the line IIII of Fig. 1,
  • Fig. '3 is an elevational view of another form of the invention.
  • Fig. 4 is an elevational view of a constructional detail applicable to either of the two forms of invention shown.
  • the mechanism shown in Fig. 1 comprises the ratchet wheel 1, which is fulcrumed at 2 and which forms part 2,908,174 Patented Oct. 13, 1959 ice of a watch or clock mechanism.
  • A' mechanical vibrator 4 oscillates in the direction of the arrows A and A.
  • Above wheel 1 is disposed a wire 5 of which one end is fixed to the vibrator 4 and of which the other end is connected to a coil spring 6 fixed to a portion 8 of the case of the clockwork.
  • Spring 6 is fixed to case 8 by one of its ends being introduced into a bore provided in case 8, the spring being retained in said bore by means of a tapered pin 14.
  • Such disposition not only provides a resilient coupling of the wire with vibrator, but also permits to regulate the tension of spring 6, and, thus, the tension of wire 5 by shifting the spring-end in case 8.
  • wire 5 also oscillates.
  • Element 7 On wire 5 and in engagement with wheel 1 is disposed a friction element 7 so that the underside thereof bears with slight pressure on the teeth 3 of wheel 1.
  • Element 7 is made of a very light material and, as may be taken from Fig. 2, is provided over its entire length with a groove 7 of which the sidewalls are inclined towards the interior thereof, and in which the wire 5 is engaged.
  • the element 7 normally participates in the vibrations of wire 5. But when, for any reason whatever, element 7 is prevented from moving, wire 5 slides in groove 7'.
  • the movements of element 7 are limited on both sides by two stops of which one, 9, is fixed to case 8 at a distance d from that end of element 7 which points towards vibrator 4, and the other stop, 10, is fixed to the case 8 at a distance d from the other end of the element.
  • the underside of the element is covered by a plastic material 11 (Fig. 2). The latter serves for the purpose of improving the friction between the underside of the element and the teeth of the wheel and of preventing a rapid wear of said underside.
  • a pawl 12 formed by a very thin resilient leaf, preferably made of a plastic, of which the free ends bear with a slight pressure on a tooth 3 of wheel 1.
  • Fig. 1 clearly shows that the conditions are satisfactory when the total displacement of d+d' of 3 element 7 is greater than pitch p but less than 2p, or in other words, when '2p d+d p.
  • the wire 5 is fixed to the element 7.
  • the'wire is connected to vibrator 4 through a second coil spring 15.
  • the natural frequency of spring must be higher than that of the oscillations of vibrator 4.
  • the device shown in Fig. 3 otherwise issimilar to that shown in Fig. 1.
  • wire 5 is so disposed that element 7 bears on wheel 1 with sufiicient pressure tolimpart a rotary movement thereto.
  • element 7 bears on wheel 1 with sufiicient pressure tolimpart a rotary movement thereto.
  • Such positive contact may be attained by means of the construction shown in Fig. 4.
  • An arched leaf spring 16 fixed at one end on the case to a pin 17 bears with its free end on the upper side of element 7.
  • Spring 16 is convex towards vibrator 4 so that, Whenelement 7 moves in order to rotate Wheel 1, spring 16 tends to increase its pressure, while, whenelement 7 moves in the other direction, the pressure of the spring 1 6 tends to decrease.
  • a mechanism for transforming mechanical vibrations of a vibrator into a rotary movement for actuating a watch or clock mechanism including a ratchet wheel, comprising a wire resiliently coupled to the vibrator and vibrating therewith, a friction element associated to said Wire, one side of said element extending longitudinally of said wire and tangentially to said ratchet wheel, bearing on some of the teeth of said ratchet to cause rotation of said wheel in one direction, a pawl coacting with the teeth of said wheel so as to prevent the latter from rotating in the other direction, means for defining the movements of said element within predetermined limits independently of the amplitude of said vibrator, and means for damping the shocks of said element.
  • connection between said wire and element is' attained by the friction of the wire in a longitudinal groove provided in the element, the wire being capable of sliding in said groove when the element is prevented from moving.
  • pawl is constituted by a resilientgleafof which one end 7.
  • a mechanism .asyset outjin claimjl in which the' pitch of the teeth ofv said wheel is-smallerthan the maximum amplitude of the oscillations of said vibrator.
  • a mechanism as set out inclaim l in'which said is fixed to a fixed support and theother end bears on a tooth of said wheel.
  • a mechanism as set out in claim 1 in; which means are provided for exerting a pressure on said element in order to maintain the latter in said ratchet wheel.
  • means are constituted by an arched leaf spring of which,
  • one end is fixed to a fixed support, and of which the other end bears on the upper side of said element, said.
  • leaf spring being sodisposed as to increase the pressure on the element when thelatter moves in order to turn said wheel, and to decrease said pressure when the element moves in the other direction.
  • a mechanism for transforming m echanical vibrations of a vibrator into -a rotary movement for actuating a Watch or clock mechanism including a ratchet wheel
  • a friction element associated with said wire, one side of said element extending longitudinally of said wire and tangentially to saidiat'chet wheel,- bearing on, some of the teeth of said'ratchet to cause r'otation of said wheel in one'direction, a pawl coacting with the teeth of tary motion, c0mprising,in combination, a ratchet wheel turnable' about its axis; a friction block having one face in frictional engagement with a peripheral portion of said ratchetwheel and having another face opposed to said one face and formed with an elongated channel extend ing substantially along said peripheral portion of said ratchet wheel; an elongated wire extending through andbeyond opposite ends of said channel and engaging said block at a part of said channel nearest to said ratchet wheel; vibrating means connected to one end 'of'said-wire' located beyond said block; and resilient means connected to an opposite end of said wire located beyond said block.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Clocks (AREA)
  • Micromachines (AREA)
US580813A 1953-10-23 1956-04-26 Motion transformer Expired - Lifetime US2908174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2908174X 1953-10-23

Publications (1)

Publication Number Publication Date
US2908174A true US2908174A (en) 1959-10-13

Family

ID=4572702

Family Applications (1)

Application Number Title Priority Date Filing Date
US580813A Expired - Lifetime US2908174A (en) 1953-10-23 1956-04-26 Motion transformer

Country Status (4)

Country Link
US (1) US2908174A (pt)
CA (1) CA570381A (pt)
DE (1) DE1037972B (pt)
IT (1) IT523572A (pt)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176167A (en) * 1962-01-05 1965-03-30 Vosseler Gerhard Quartz oscillator and drive system
US3192701A (en) * 1962-11-30 1965-07-06 Tanaka Kazuo Vibratory motion converter for an electric timepiece
US3243951A (en) * 1962-03-28 1966-04-05 Toko Radio Coil Kenkyusho Kk Flexure vibration type electrical vibrator and transistor oscillator utilizing the same
US3802178A (en) * 1971-02-12 1974-04-09 Suwa Seikosha Kk Electric timepiece with light responsive battery recharging

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279557B (de) * 1961-01-19 1968-10-03 Bulova Watch Co Inc Stimmgabel als zeitbestimmendes Glied fuer eine elektrische Uhr

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1290264A (en) * 1916-12-28 1919-01-07 Marguerite G O Leary Constant-amplitude-of-vibration motor and method of control same.
US1816102A (en) * 1929-06-26 1931-07-28 Waters Albert Electrically moved display apparatus
US2196189A (en) * 1936-07-28 1940-04-09 Company The Stamford Trust Electrical motor
GB761633A (en) * 1953-10-23 1956-11-14 Bulova Watch Co Inc Pawl and ratchet mechanism for transforming mechanical vibrations into a rotary movement for actuating a watch or clock mechanism

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE384925C (de) * 1921-08-11 1923-11-27 Gaston Beauvais Vorrichtung zur Umwandlung einer Vibrationsbewegung in eine Kreisbewegung
GB362518A (en) * 1930-09-10 1931-12-10 Sydney James Smith Improvements in or relating to clocks
CH163947A (fr) * 1932-07-29 1933-09-15 Chopard Pierre Horloge électrique.
US2642714A (en) * 1947-12-23 1953-06-23 Gen Motors Corp Electric clock

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1290264A (en) * 1916-12-28 1919-01-07 Marguerite G O Leary Constant-amplitude-of-vibration motor and method of control same.
US1816102A (en) * 1929-06-26 1931-07-28 Waters Albert Electrically moved display apparatus
US2196189A (en) * 1936-07-28 1940-04-09 Company The Stamford Trust Electrical motor
GB761633A (en) * 1953-10-23 1956-11-14 Bulova Watch Co Inc Pawl and ratchet mechanism for transforming mechanical vibrations into a rotary movement for actuating a watch or clock mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176167A (en) * 1962-01-05 1965-03-30 Vosseler Gerhard Quartz oscillator and drive system
US3243951A (en) * 1962-03-28 1966-04-05 Toko Radio Coil Kenkyusho Kk Flexure vibration type electrical vibrator and transistor oscillator utilizing the same
US3192701A (en) * 1962-11-30 1965-07-06 Tanaka Kazuo Vibratory motion converter for an electric timepiece
US3802178A (en) * 1971-02-12 1974-04-09 Suwa Seikosha Kk Electric timepiece with light responsive battery recharging

Also Published As

Publication number Publication date
CA570381A (en) 1959-02-10
DE1037972B (de) 1958-08-28
IT523572A (pt)

Similar Documents

Publication Publication Date Title
US10054908B2 (en) Escapement with escape wheel with field ramps and non-return
RU2749944C2 (ru) Механический часовой механизм с резонатором, имеющим две степени свободы, и с поддерживающим механизмом, использующим бегунок, перемещающийся по дорожке
US2908174A (en) Motion transformer
JP6224854B2 (ja) ２つの計時器用発振器を１つの歯車列と同期する方法
CN106537264B (zh) 钟表调节机构、钟表机芯以及钟表
US3057147A (en) Motion converter
US2808698A (en) Mechanical regulator for clockwork
US1981297A (en) Self-winding timepiece
CN110398893B (zh) 具有铰接谐振器的钟表调速机构
US2997840A (en) Battery operated time piece
US2800763A (en) Power take-off device with staggered ratchets
US3377874A (en) Motion converter
US2642714A (en) Electric clock
US3469462A (en) Pawl and ratchet mechanism driven by vibratory means
US3440815A (en) Escapement device
US10927824B2 (en) Mechanical movement with rotary resonator, which is isochronous and positionally insensitive
US2921476A (en) Timepiece movement with a jumping second-beating hand
US3425210A (en) Stepping device for tuning fork oscillator
US2526620A (en) Escapement
US3115788A (en) Drive pawl for electrically wound clocks
US2952118A (en) Cannon pinion assembly
US2997839A (en) Indexing and contact mechanism
US2897680A (en) Driving mechanism for an index wheel
US502884A (en) Isaac grasset and augusts meylaist
US3817110A (en) Device for transforming oscillating movement into rotary movement