US3440815A - Escapement device - Google Patents

Escapement device Download PDF

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Publication number
US3440815A
US3440815A US597727A US3440815DA US3440815A US 3440815 A US3440815 A US 3440815A US 597727 A US597727 A US 597727A US 3440815D A US3440815D A US 3440815DA US 3440815 A US3440815 A US 3440815A
Authority
US
United States
Prior art keywords
escapement
pallet
teeth
wheel
gathering
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
US597727A
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English (en)
Inventor
Jean Claude Berney
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.)
BERNARD GOLAY SA
Original Assignee
Golay Bernard 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 Golay Bernard Sa filed Critical Golay Bernard Sa
Application granted granted Critical
Publication of US3440815A publication Critical patent/US3440815A/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
    • G04B15/00—Escapements
    • 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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements
    • 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
    • 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
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • 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

Definitions

  • the purpose of the escapement is to transmit the energy received by the gear train, itself driven by the driving spring to the regulating member formed by the spiral spring, and balance.
  • This escapement comprises generally an independent pallet oscillating around an axis fixed in the plate.
  • the mechanical linkage between the pallet and the regulating member consisting of the plate bearing the pin which stops against each of the horns of the pallet, is relatively complicated.
  • the spiral spring balance assembly requires delicate adjustment.
  • the present invention precisely has for its object an escapement assembly for a watch movement comprising pallet arms rigid with a vibrator the vibration of which is kept up by the energy of the gear train and which cooperates with an escapement wheel, but made in such a way that the assembly functions satisfactorily in any posi tion.
  • This device is characterised by the fact that the pallet arms are disposed in such a way that they oscillate perpendicularly to the plane of the escapement wheel.
  • FIGURE 1 represents an escapement device with a vibrating blade.
  • FIGURE 2 shows a cross sectional view taken along 11-11 of FIGURE 3.
  • FIGURE 3 shows an exaggerated profile view of the escapement.
  • FIGURE 4 shows a modification of the device of FIG- URE 1.
  • FIGURE 5 is a cross-sectional view showing a further modification of the invention wherein the gathering pallets are shifted relatively to one another.
  • FIGURE 6 shows a further modification of the invention employing a second resonator as a time base.
  • an escapement wheel 3 the pinion of which 4 rigid with this wheel, meshes with a wheel 5, which may be the seconds wheel of a watch movement.
  • wheel 5 transmits the energy of the driving member of the movement to the escapement wheel 3.
  • This wheel 3 bears on its periphery two sets of teeth 6 and 7 cut on each of the opposite faces of wheel 3, the teeth of each of these sets being formed by a vertical side and an oblique side inclined in the direction corresponding to the direction of rotation indicated by arrow F of the escapement wheel.
  • the sets of teeth 6 and 7 are furthermore displaced one with respect to the other by a length equal to a half tooth.
  • the escapement wheel 3 cooperates with the pallet arms 8 which are small by comparison with the diameter of wheel 3 and disposed vertically.
  • These pallet arms 8 bear two gathering pallets 9 and 10 formed by ruby stones, encased in each end of the pallet arms.
  • These gathering pallets have when viewed profilewise (FIGURE 3) a vertical face 9a and 10a respectively and an oblique face 9b and 10b respectively, the two faces being respectively parallel to the flank 0f the teeth of each of the sets of teeth 6 and 7.
  • Pallet arms 8 are secured by encasing or by welding, to the extremity of the vibrating blade 12 encased by its extremity 12b in a rigid support formed by two blocks 13 and 14 gripping the blade by a pressure of pincers 15 guided by a column 16 and actuated by a screw 17.
  • the extremity 12a of this blade is twisted by with respect to the rest of the blade, the small length of part 12a prevents practically the oscillation of the pallet arms in a plane parallel to the plate.
  • Plate 1 has furthermore near the pallet arms, a hollow 11 surrounding the lower arm of pallet 8. The vertical dimension of this pallet accordingly is small.
  • each of the gathering pallets 9 and 10 penetrate at rest very slightly in each of the corresponding sets of teeth 6 and 7. This penetration is indicated in the drawing by d.
  • One tooth of one or the other of the sets of teeth will always then contact one of the flanks 9a or 10a of one of the gathering pallets. It is advantageous to maintain amplitude a of the oscillations of gathering pallets 9 and 10 at a minimal value by giving on the one hand to blade 12 a maximum rigidity rendering it insensitive to outer shocks and by additionally reducing its length.
  • FIGURE 3 shows then the escapement device in its rest position in which each of gathering pallets 9 and 10 penetrate by a value d in sets of teeth 6 and 7.
  • Tooth 18 continues to move freely in the direction of arrow F and tooth 19 of the upper teeth 6 hits in its turn against face 9b of the upper gathering pallet 9, this gathering pallet retaining the escapement wheel 3 until the moment when the elastic return force of blade 12 drives gathering pallet 9 upwardly freeing tooth 19.
  • the pressure of tooth 19 on the face 9b of gathering pallet 9 also has a vertical component through which is effected the transmission of energy from the escapement wheel to blade 12, necessary for the upkeep of the oscillation of the latter.
  • the time base is formed by the vibrating blade itself and it is therefore important that the frequency of oscillation be stable.
  • a tuning fork or a resonator derived from a tuning fork one of the branches bearing the pallet on and the other branch oscillating freely and synchronizing the first branch.
  • resonator for example a dynamically balanced resonator, such as a resonator in the shape of an H, O or S.
  • a second resonator (20) as a time base, the frequency of oscillation of which is a multiple of the oscillation frequency of the vibrating organ bearing the pallet arm and synchronizing the latter either mechanically, magnetically, electro-dynamically, or electro-magnetically.
  • This second oscillator can be for example a tuning fork.
  • an escapement assembly comprising a vibrator having one extremity rigidly secured to said plate, and a free extremity, pallet arms rigidly secured to said free extremity and having at 5 these extremities thereof gathering pallets cooperating with the teeth of said escapement wheel, said teeth having flanks and one of said flanks being parallel to one side of the corresponding pallet whereby said pallet arms can oscillate perpendicularly to the plane of said escapement wheel and said assembly can function satisfactorily in any position.
  • Assembly according to claim 1 having a resonator serving as a time base, said resonator oscillating at a frequency equal to a multiple of the frequency of said vibrator.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Jigging Conveyors (AREA)
  • Electric Clocks (AREA)
  • Micromachines (AREA)
US597727A 1965-12-07 1966-11-29 Escapement device Expired - Lifetime US3440815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1685665 1965-12-07

Publications (1)

Publication Number Publication Date
US3440815A true US3440815A (en) 1969-04-29

Family

ID=4420812

Family Applications (1)

Application Number Title Priority Date Filing Date
US597727A Expired - Lifetime US3440815A (en) 1965-12-07 1966-11-29 Escapement device

Country Status (5)

Country Link
US (1) US3440815A (ref)
CH (2) CH1685665A4 (ref)
DE (1) DE1523770A1 (ref)
FR (1) FR1505656A (ref)
GB (1) GB1108269A (ref)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017068538A1 (fr) 2015-10-23 2017-04-27 Richemont International Sa Oscillateur pour un mouvement horloger mécanique
FR3048791A1 (fr) * 2016-03-14 2017-09-15 Lvmh Swiss Mft Sa Mecanisme pour piece d'horlogerie et piece d'horlogerie comprenant un tel mecanisme

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH705971A1 (fr) * 2012-01-09 2013-07-15 Lvmh Swiss Mft Sa Organe réglant pour montre ou chronographe.
EP2613205A3 (fr) * 2012-01-09 2016-07-13 Lvmh Swiss Manufactures SA Organe réglant pour montre ou chronographe
CH705970B1 (fr) * 2012-01-09 2017-09-29 Lvmh Swiss Mft Sa Mécanisme d'horlogerie comprenant un oscillateur vibrant.
CH709811B1 (fr) * 2014-06-25 2018-03-15 Association Suisse Pour La Rech Horlogere Asrh Système oscillant pour mouvement horloger à échappement à ancre.

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US765678A (en) * 1903-10-03 1904-07-26 Heinrich Reddoehl Balance-escapement.
GB363352A (en) * 1930-09-05 1931-12-07 Albert Jasper Ashdown A vibratory tuning and regulating device
US2133216A (en) * 1936-03-07 1938-10-11 Edward E Taliaferro Escapement
US2373429A (en) * 1941-12-15 1945-04-10 Straumann Reinhard Magnetic escapement for timepieces
US2475730A (en) * 1946-09-03 1949-07-12 Clarence W Wandrey Projectile offset
US2769342A (en) * 1955-07-06 1956-11-06 Lip Horlogerie Escapement mechanism
US2924102A (en) * 1954-07-12 1960-02-09 Lip Horlogerie Escapement mechanism
GB838430A (en) * 1955-06-14 1960-06-22 Horstmann Magnetics Ltd Magnetic escapement mechanism
US3130594A (en) * 1962-06-25 1964-04-28 Collins Radio Co Shaft positioning device
FR1366029A (fr) * 1963-05-03 1964-07-10 Ind Controle & Equipment Dispositif pour l'amélioration des échappements d'horlogerie

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US765678A (en) * 1903-10-03 1904-07-26 Heinrich Reddoehl Balance-escapement.
GB363352A (en) * 1930-09-05 1931-12-07 Albert Jasper Ashdown A vibratory tuning and regulating device
US2133216A (en) * 1936-03-07 1938-10-11 Edward E Taliaferro Escapement
US2373429A (en) * 1941-12-15 1945-04-10 Straumann Reinhard Magnetic escapement for timepieces
US2475730A (en) * 1946-09-03 1949-07-12 Clarence W Wandrey Projectile offset
US2924102A (en) * 1954-07-12 1960-02-09 Lip Horlogerie Escapement mechanism
GB838430A (en) * 1955-06-14 1960-06-22 Horstmann Magnetics Ltd Magnetic escapement mechanism
US2769342A (en) * 1955-07-06 1956-11-06 Lip Horlogerie Escapement mechanism
US3130594A (en) * 1962-06-25 1964-04-28 Collins Radio Co Shaft positioning device
FR1366029A (fr) * 1963-05-03 1964-07-10 Ind Controle & Equipment Dispositif pour l'amélioration des échappements d'horlogerie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017068538A1 (fr) 2015-10-23 2017-04-27 Richemont International Sa Oscillateur pour un mouvement horloger mécanique
FR3048791A1 (fr) * 2016-03-14 2017-09-15 Lvmh Swiss Mft Sa Mecanisme pour piece d'horlogerie et piece d'horlogerie comprenant un tel mecanisme
WO2017157868A1 (fr) * 2016-03-14 2017-09-21 Lvmh Swiss Manufactures Sa Mécanisme pour pièce d'horlogerie et pièce d'horlogerie comprenant un tel mécanisme
US11460811B2 (en) 2016-03-14 2022-10-04 Lvmh Swiss Manufactures Sa Mechanism for a timepiece and timepiece comprising such a mechanism

Also Published As

Publication number Publication date
CH1685665A4 (ref) 1968-02-29
DE1523770A1 (de) 1969-07-24
CH464083A (fr) 1968-02-29
FR1505656A (fr) 1967-12-15
GB1108269A (en) 1968-04-03

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