US3826076A - Anchor escapement for time-measuring instruments - Google Patents

Anchor escapement for time-measuring instruments Download PDF

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Publication number
US3826076A
US3826076A US00371412A US37141273A US3826076A US 3826076 A US3826076 A US 3826076A US 00371412 A US00371412 A US 00371412A US 37141273 A US37141273 A US 37141273A US 3826076 A US3826076 A US 3826076A
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US
United States
Prior art keywords
anchor
escapement
return
faces
face
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Expired - Lifetime
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US00371412A
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English (en)
Inventor
P Tuetey
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.)
FAB D ASSORTIMENTS REUNIES
LES FAB D ASSORTIMENTS REUNIES CH
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FAB D ASSORTIMENTS REUNIES
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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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements

Definitions

  • the return faces are, therefore, in principle convex at the entry and concave at the exit.
  • the value of the return angle which can be kept constant along the whole supplemental are, is preferably ehosen'between to 25, this value depending on the value of the coefficient of friction of the materials used. This return angle can,'in a progressive wheel.
  • I capefwheel sothat its mannerof working can, on the whole, be compared with that of a pin-pallet or Rosmanner, increase to an extent as the additionalangle of the anchor increases, in order to obtain in this way a progressive braking and a rapid return.
  • FIG. 1 is a top view of the first example with a monometallic anchor, in the position in which the entry is in engagement with the escape wheel.
  • FIG. 2 is a sectional view along the line II-II of FIG.
  • FIG. 3 is a top view of the first example, in the'postion in which the exit is in engagement with the escape
  • FIG. 4 is'a top view of the second example.
  • FIGS. 5 and 6 illustrate modifications of the ends of the anchor arms of the second example.
  • the shaft 6 of the anchor 1 is preferably a traditional one.
  • the anchor 1' has neither a safety pin nor horns. .Its arms la and 1b are stamped out in the shape of pallets and constitute function surfaces such as the locking faces 7, the impulse faces 8 and return faces 9. The locking faces 7 and the impulse faces 8 correspond to those of an ordinary anchor.
  • the return face 9 of the arm is serves for bringing the anchor 1 back to and for positioning it in the position shown in FIG.
  • the return angle 15 lies between the tangent 16 to the return face 9 and the perpendicular 17 to the straight line 18 which connectsth'e said point withthe center of the anchor 1, i.e., with the, geometrical axis of the palletor anchor-shaft 6.
  • the anchor 1 is very easy tomanfuacture, because it is flat and has no parts fixed to it. For this reason, and since it has no superfluous masses such as horns, safety pins or pallet-stones which are at a large distance from the staff 6, its moment of inertia is smaller than that of a traditional an chor for the same conditions. This results in an improvement of the efficiency of the escapement and in a good running of the watch.
  • a metallic anchor can be manufactured very easily from one piece at a minimum of operations, such, as for instance, stamped or punched and afterwards finished.
  • the anchor can be manufactured without diffi- 3 culties by injection molding.
  • the monometallic anchor andthe injection-molded anchor can be provided with a hard layer 21, in order to improveits resistance against wear and tear and/or the coefficient of friction between the anchor 1 and the escape wheel 2.
  • the layer 21 may, for instance, also be made of hard chromium or of a Co-Re alloy.
  • the metallic pallets of FIG. 1 which are formed bythe anchor arm ends, are replaced by pallet-stones 118 and 119 fixed to the anchor and made of ruby or of any other hard and/or self-lubricating material.
  • the return faces 120 are provided on the arms 116a and 116b of the anchor body 116.
  • members 130 comprising the return faces are fixed to the anchor.
  • Pallet-stones 119 and members 130 may consist of ruby, or other hard and/or self-lubricating material.
  • the pallet-stones 131 consisting of r'uby or any other hard and/or self-lubricating material comprise all the necessary faces, viz: the impulse face 128, the locking face 117 and the return face 120. of the embodiment according to FIG. 4.
  • the return faces 9 limit the amplitude of the oscillations .of the anchor 1.
  • the travel of the anchor 1 is stopped when the heel of a tooth reachedthe line of intersection between the locking face 7 and the return face 9.
  • the return faces 9 allow the anchor 1 to run through an additional angle. This occurs on the occasion of outer shocks or of knocking. If the impulseor roller-pin 4 of the large roller 3 is in the position of FIG. 1, a shock in the direction of arrow 26 (FIG. 3) may bring the fork from the position of FIG. 1 into the position of FIG. 3.
  • the escapement according to the invention also offers security of its working in the case of the so-called knocking. Knocking occurs when the mainspring of the watch is oversized. If such an oversized mainspring is the roller-pin 4 of a classical escapement when moving in the direction of the arrow 33 (FIG. 3) strikes against the backside of the horns or fork arms and is heavily repulsed, which in certain cases can result in a tearingout or breaking of the roller-pin 4. In the escapement according to the invention, however, the anchor, on the roller-pin 4 sticking against the backside 34 of the fork,
  • the escapement according to the invention counts exactly the number of vibrations of the balance, so that any advance in the running of the watch is avoided.
  • An anchor escapement for time-measuring instruments with a balance and animpulse means connected with the balance, an escape wheel, an anchor cooperating with said escape wheel and with said impulse means, said anchor having first and second opposite arms, each of said arms terminating in a locking face and an impulse face to cooperate with the teeth of said escape wheel, the improvement wherein said anchor further comprises a return face on the terminal portion of each arm adjacent said locking face, each said return face being disposed at an acute angle relative a perpendicular to a straight line between the axis of the anchor and the intersection of said return and locking faces, said return faces cooperating with the teeth of said escapement wheel to limit the oscillations of said anchor while allowing the anchor, in the case of knocking and overbanking, an additional angular movement to guarantee an unobjectionable working of the escapement even in the case of shocks and knocking.
  • An anchor escapement as claimed in claim 1 said return faces extending along a curve establishing a progressively increasing return moment between the anchor and the escape wheel.
  • An anchor escapement as claimed in claim 1 two pallets fixed to the body of said anchor and comprising said locking and said impulse faces, said return faces being provided on the body of said anchor.
  • An anchor escapement as claimed in claim 1 two pallets fixed to the body of said anchor and comprising said locking and said impulse faces, and two separate members fixed to the body of said anchor, said return faces being provided on said separate members.
  • An anchor escapement as claimed in claim 1 two pallets fixed to the body of said anchor, each of said pallets comprising an impulse face, a locking face and a return face.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Forging (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Vibration Dampers (AREA)
  • Micromachines (AREA)
US00371412A 1972-07-19 1973-06-19 Anchor escapement for time-measuring instruments Expired - Lifetime US3826076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1082672A CH567293B5 (fr) 1972-07-19 1972-07-19 Echappament à ancre pour pièce d'horlogerie

Publications (1)

Publication Number Publication Date
US3826076A true US3826076A (en) 1974-07-30

Family

ID=4367247

Family Applications (1)

Application Number Title Priority Date Filing Date
US00371412A Expired - Lifetime US3826076A (en) 1972-07-19 1973-06-19 Anchor escapement for time-measuring instruments

Country Status (5)

Country Link
US (1) US3826076A (ja)
JP (1) JPS5331741B2 (ja)
CH (2) CH1082672A4 (ja)
DE (1) DE2328074B2 (ja)
GB (1) GB1425416A (ja)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030112709A1 (en) * 2001-12-15 2003-06-19 Richemont International S.A. Constant-force device
US20060262652A1 (en) * 2003-04-29 2006-11-23 Jean-Pierre Musy Control member with a balance wheel and a planar spiral for a watch or clock movement
US20110045249A1 (en) * 2008-02-21 2011-02-24 Miei Sato Sliding component and timepiece
US20120307601A1 (en) * 2010-04-01 2012-12-06 Patek Philippe Sa Geneve Impact-proof timepiece escapement
CN103261975A (zh) * 2010-12-14 2013-08-21 萧邦科技公司 杠杆和具有此种杠杆的擒纵机构
JP2015025719A (ja) * 2013-07-25 2015-02-05 セイコーインスツル株式会社 脱進機、時計用ムーブメントおよび時計
CN104813241A (zh) * 2012-11-26 2015-07-29 迪特拉有限公司 用于计时器的杠杆擒纵机构
US20150268631A1 (en) * 2014-03-24 2015-09-24 Nivarox-Far S.A. One-piece composite impulse pin-safety roller component
USD819896S1 (en) * 2017-08-21 2018-06-05 Avian Cafe Corporation Aves cafe
USD836851S1 (en) 2017-12-18 2018-12-25 Avian Corporation Aves cafe
EP2585876B1 (fr) 2010-06-22 2021-02-17 The Swatch Group Research and Development Ltd. Systeme d'echappement pour piece d'horlogerie
US11397408B2 (en) 2018-05-25 2022-07-26 Société Anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Automatically starting and secured detent escapement for a timepiece
RU2816569C1 (ru) * 2022-06-08 2024-04-02 Ниварокс-Фар С.А. Колесо для спусковой системы с уменьшенной инерцией

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5627657A (en) * 1979-08-15 1981-03-18 Akio Matsui Speed indicator for motor vehicle and the like
EP2466395A1 (fr) * 2010-12-14 2012-06-20 Chopard Technologies SA Ancre et échappement muni d'une telle ancre
JP6120322B2 (ja) * 2013-07-25 2017-04-26 セイコーインスツル株式会社 振り座、脱進機、時計用ムーブメントおよび時計
EP3001256B2 (de) 2014-09-23 2024-02-07 GFD Gesellschaft für Diamantprodukte mbH Ankerhemmung
WO2017013611A1 (fr) * 2015-07-21 2017-01-26 Cartier International Ag Mécanisme d'échappement
JP7103041B2 (ja) * 2018-08-03 2022-07-20 セイコーエプソン株式会社 アンクル、ムーブメント、時計
CH716337A1 (fr) * 2019-06-19 2020-12-30 Mft Dhorlogerie Audemars Piguet Sa Ensemble pour échappement à ancre de mouvement horloger.
EP4383012A1 (fr) * 2022-12-08 2024-06-12 ETA SA Manufacture Horlogère Suisse Profil auto-demarrant pour echappement d'horlogerie

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US509315A (en) * 1893-11-21 Emil klahn
US2946227A (en) * 1959-06-24 1960-07-26 Jamieson Lab Inc Escapement mechanism
US3511340A (en) * 1967-12-09 1970-05-12 Far Fab Assortiments Reunies Method of lubricating a timepiece movement
US3611707A (en) * 1968-11-21 1971-10-12 Messrs Gebruder Jungshans Gmbh Continuous-switching device for advancing the wheel mechanism of an electric clock
US3738101A (en) * 1969-07-11 1973-06-12 Far Fab Assortiments Reunies Timepiece escapement lever

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US509315A (en) * 1893-11-21 Emil klahn
US2946227A (en) * 1959-06-24 1960-07-26 Jamieson Lab Inc Escapement mechanism
US3511340A (en) * 1967-12-09 1970-05-12 Far Fab Assortiments Reunies Method of lubricating a timepiece movement
US3611707A (en) * 1968-11-21 1971-10-12 Messrs Gebruder Jungshans Gmbh Continuous-switching device for advancing the wheel mechanism of an electric clock
US3738101A (en) * 1969-07-11 1973-06-12 Far Fab Assortiments Reunies Timepiece escapement lever

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030112709A1 (en) * 2001-12-15 2003-06-19 Richemont International S.A. Constant-force device
US6863434B2 (en) * 2001-12-15 2005-03-08 Richemont International S.A. Constant-force device
US20060262652A1 (en) * 2003-04-29 2006-11-23 Jean-Pierre Musy Control member with a balance wheel and a planar spiral for a watch or clock movement
US7344302B2 (en) * 2003-04-29 2008-03-18 Patek, Philippe Sa Control member with a balance wheel and a planar spiral for a watch or clock movement
US20110045249A1 (en) * 2008-02-21 2011-02-24 Miei Sato Sliding component and timepiece
US8747993B2 (en) * 2008-02-21 2014-06-10 Seiko Instruments Inc. Sliding component and timepiece
US20120307601A1 (en) * 2010-04-01 2012-12-06 Patek Philippe Sa Geneve Impact-proof timepiece escapement
US8757869B2 (en) * 2010-04-01 2014-06-24 Patek Philippe Sa Geneve Impact-proof timepiece escapement
EP2585876B1 (fr) 2010-06-22 2021-02-17 The Swatch Group Research and Development Ltd. Systeme d'echappement pour piece d'horlogerie
CN103261975A (zh) * 2010-12-14 2013-08-21 萧邦科技公司 杠杆和具有此种杠杆的擒纵机构
CN104813241B (zh) * 2012-11-26 2017-07-07 迪特拉有限公司 用于计时器的杠杆擒纵机构
CN104813241A (zh) * 2012-11-26 2015-07-29 迪特拉有限公司 用于计时器的杠杆擒纵机构
US9323220B2 (en) 2012-11-26 2016-04-26 Detra Sa Lever escapement for a timepiece
CN104345627A (zh) * 2013-07-25 2015-02-11 精工电子有限公司 擒纵器、钟表用机芯以及钟表
CN104345627B (zh) * 2013-07-25 2018-03-09 精工电子有限公司 擒纵器、钟表用机芯以及钟表
JP2015025719A (ja) * 2013-07-25 2015-02-05 セイコーインスツル株式会社 脱進機、時計用ムーブメントおよび時計
US20150268631A1 (en) * 2014-03-24 2015-09-24 Nivarox-Far S.A. One-piece composite impulse pin-safety roller component
US9223291B2 (en) * 2014-03-24 2015-12-29 Nivarox-Far S.A. One-piece composite impulse pin-safety roller component
USD819896S1 (en) * 2017-08-21 2018-06-05 Avian Cafe Corporation Aves cafe
USD836851S1 (en) 2017-12-18 2018-12-25 Avian Corporation Aves cafe
US11397408B2 (en) 2018-05-25 2022-07-26 Société Anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Automatically starting and secured detent escapement for a timepiece
RU2816569C1 (ru) * 2022-06-08 2024-04-02 Ниварокс-Фар С.А. Колесо для спусковой системы с уменьшенной инерцией

Also Published As

Publication number Publication date
CH1082672A4 (ja) 1975-03-14
JPS5331741B2 (ja) 1978-09-04
DE2328074B2 (de) 1974-11-14
GB1425416A (en) 1976-02-18
DE2328074A1 (de) 1974-02-07
JPS49109068A (ja) 1974-10-17
CH567293B5 (fr) 1975-09-30

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