US3146582A - Shock-absorbing bearing for a movable watch or clock element - Google Patents

Shock-absorbing bearing for a movable watch or clock element Download PDF

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Publication number
US3146582A
US3146582A US238077A US23807762A US3146582A US 3146582 A US3146582 A US 3146582A US 238077 A US238077 A US 238077A US 23807762 A US23807762 A US 23807762A US 3146582 A US3146582 A US 3146582A
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US
United States
Prior art keywords
support
spring
arms
bearing
fork
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
US238077A
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English (en)
Inventor
Loretan Edonard
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.)
Parechoc SA
Original Assignee
Parechoc 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
Priority claimed from CH1394061A external-priority patent/CH375288A/fr
Application filed by Parechoc SA filed Critical Parechoc SA
Application granted granted Critical
Publication of US3146582A publication Critical patent/US3146582A/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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/02—Shock-damping bearings
    • G04B31/04—Shock-damping bearings with jewel hole and cap jewel

Definitions

  • FIG. 1 is' a plan view of a shock-absorbing bearing for a movable watch or clock element according to a first embodiment of the invention.
  • FIG. 2 is a section taken along line IIII in FIG. 1.
  • FIG. 3 is a plan view of an alternative embodiment of a shock-absorbing bearing for a movable watch or clock element and FIG. 4 is a section taken along line IVIV in FIG. 3.
  • The'bearing shown in FIGS. 1 and 2 comprises a support I intended to be fitted into the plate of a watch or clock movement.
  • a bearing body comprising an endpiece jewel 2 and a drilled jewel 3 surrounded by an insetting 4 is housed inside the bearing support 1 in a recess, 5 in the latter.
  • the in-setting 4 has two centering surfaces, namely a plane front surface 6 co-operating with a plane seat 7 formed by the end of the recess 5 and a frusto-conical surface 8, co-operating with a circular ridge 9 formed by an inner shoulder of the support 1.
  • the end-piece jewel 2 rests freely in a seat 10 with which the in-setting 4 is provided. It is held in place in the insetting and the latter is held in the centered position in the support 1 by a return spring 11.
  • Said spring is mounted on the support 1. To this end it has a fork of which the two arms 11a are each bent at 11b so as to form a claw engaging a projection or web 1a of the support 1.
  • Said web 1a is produced by forming two countersinks 12 in the outer annular surface of the support 1.
  • the side surfaces of the projection 1a disposed opposite the ends 111) of the fork of the spring each have a groove 13, the end of which is shaped as an arc of a circle.
  • Said grooves 13 are produced by the milling cutter used to produce the countersinks 12, this milling cutter being profiled.
  • the opposite edges of the countersinks 12 also have a groove of the same profile denoted by reference 14, which is of no special use but is a result of the production process.
  • the end-faces 15 of the ends 11b of the spring situated opposite one another are inclined with respect to the central longitudinal plane of the spring to facilitate their introduction over the projection 1a.
  • the spacing between the ends of the grooves 13 when viewed from the inside of the bearing is less than the distance separating the two surfaces 15 at the place where they are farthest apart.
  • the spring 11 only has to be pushed against the projection 1a and moved radially along the radius passing through the axis of the projection 1a to engage the 3,146,582 Patented Sept.
  • the spring 11 also has two arms 11c forming a second spring diametrically opposite the first, which bear on the end-piece 2.
  • a central part 11d forming a common base for the two forks of the spring also bears on the endpiece.
  • the ends of the arms 11c denoted by reference 11e engage resiliently with the support 1.
  • the latter has a countersink 16 diametrically opposite the projection 1a, this countersink being produced with the same milling cutter as the countersinks 12, and the two opposite walls of said countersink 16 each have a groove 17.
  • the ends 11c of the spring penetrate resiliently into these grooves and thus ensure that the spring is secured; the fork 11c simply has to be squeezed to free the ends 11e from the grooves 17 and release the spring 11 for free pivotal movement.
  • the pressure to which the fork 110 is subjected when its arms 11e are engaged in the grooves 17 tends to move the arms 11a of the articulation fork slightly apart so that the ends 11b are then free in the grooves 13 thus preventing the spring from being subjected to stresses which might produce undesirable bending.
  • the arms 11:: are freed from the grooves 17 the articulation fork 11a closes up slightly so that the ends 11b press resiliently against the end of the grooves 13. The spring therefore remains in the position in which it has been placed, and does not of itself fall back onto the bearing, to form an obstacle to the watch or clock repairer for example.
  • FIGS. 3 and 4 differs from the embodiment shown in FIGS. 1 and 2 in that the spring 18 has a fork, each of the two arms 18a of which is provided at the end with a projection 18b extending towards the outside of the fork and not the inside as in the embodiment shown in FIGS. 1 and 2.
  • This fork is housed in a recess 19 formed in the outer annular surface of the support 20.
  • the side surfaces of the recess 19 facing the projections 18b of the spring fork each have a groove 21, the end of which is shaped as an arc of a circle. These grooves 21 are produced by the same milling cutter used to produce the recess 19, the said milling cutter being profiled.
  • the end surfaces 22 of the projection 1811 on the spring are inclined with respect to the central longitudinal plane of the latter and this facilitates their introduction into the recess 19.
  • the spacing between the ends of the grooves 21 when Viewed from the inside of the bearing is less than the distance between the two surfaces 22 at the place where they are farthest apart.
  • the fork 18a of the spring 18 simply has to be pushed into the recess 19 and displaced radially along the radius passing through the axis of the recess to cause the projections 18b to penetrate into the grooves 21 by resilient deformation of the arms 18a.
  • This assembly forms a spring articulation on the support 20 to enable the spring to be lifted for dismantling of the bearing without the spring being able to be separated from the support by itself.
  • a shock absorbing bearing for a timepiece comprising a support, a bearing body in said support and means detachably and pivotally supported on said support for removably securing the bearing body in the support, said means being constituted by a resilient spring member having opposite end portions, each of said end portions being constituted as a fork having opposed arms which are resiliently displaceable towards and away from one another,
  • said resilient member engaging said support with the forks at each of the end portions, said resilient spring member including a central arm adjacent one of the forks, the arms of the latter fork including projections. in resilient engagement with the support for supporting the resilient member for self-supporting pivotal movement when the arms of the other of the forks are released from the support, said arms of the other of said forks being releaseable from the support solely by displacement of the arms relative to one another.
  • a shock absorbing bearing for a timepiece a circular support, a bearing body in the support and a return spring member supported on the support and acting on the bearing body to keep the same in a centered position, said spring member including a pair of connected arms defining a plane of symmetry for said spring member, said arms having opposed ends which define forks at each of the ends of the spring member and whereat the arms can be displaced towards and away from one another, a lateral projection on each arm at one of the forks, the projections lying in a common plane, said support being provided with two recesses each of which accommodates a corresponding projection of the arms of the said one fork with the projections in contact with the support, said recesses being arcuate and extending substantially radially, said projections have straight ends which are inclined with respect to said plane of symmetry, said projections extending into the recesses substantially perpendicularly such that the spring member is pivotally secured to the said support by said one fork and is self-supporting in different angular positions
  • said support includes an annular portion which is'provided with spaced countersinks defining a web therebetween as well as said recesses which are undercut in said web, said ends of the projections on the arms of the fork extending into said arcuate recesses into contact with the web thus formed in the annular portion.
  • said spring member includes a central arm connecting the first mentioned arms at a location adjacent the said one fork, said spring member being adapted for engaging the bearing body with the central arm and with the other arms at a location between the central arm and the other of said forks.
  • a return spring adapted for being secured in a bearing support to act on a bearing body to hold the same in said support, said spring being constituted of resilient material and including a pair of spaced symmetrical arms defining a central longitudinal plane of symmetry for saidspring, said spring having opposite end portions each constituted as a fork, said spring further including a transverse portion extending between said arms to connect the'same together at a location adjacent one of the forks whereby the free endsof the arms at both of the forks will be resiliently displaceable towards and away from one another while the degree of flexibility of the arms at the fork closer to said transverse portion i will be reduced when compared to that of the arms at the other of the forks, said spring further including a pair of projections for said one fork extending from the free ends of the arms in a direction having a component perpendicular to the central longitudinal plane.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Springs (AREA)
  • Pivots And Pivotal Connections (AREA)
US238077A 1961-11-29 1962-11-14 Shock-absorbing bearing for a movable watch or clock element Expired - Lifetime US3146582A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1394061A CH375288A (fr) 1961-11-29 1961-11-29 Palier amortisseur de chocs pour mobile d'horlogerie
CH3146582X 1961-11-29
CH317662A CH427657A (fr) 1961-11-29 1962-03-17 Palier amortisseur de chocs pour mobile d'horlogerie

Publications (1)

Publication Number Publication Date
US3146582A true US3146582A (en) 1964-09-01

Family

ID=61627923

Family Applications (1)

Application Number Title Priority Date Filing Date
US238077A Expired - Lifetime US3146582A (en) 1961-11-29 1962-11-14 Shock-absorbing bearing for a movable watch or clock element

Country Status (5)

Country Link
US (1) US3146582A (fr)
CH (1) CH427657A (fr)
DE (1) DE1255047B (fr)
FR (1) FR1339842A (fr)
GB (1) GB944975A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306028A (en) * 1966-01-04 1967-02-28 Citizen Watch Co Ltd Shock-proof device for watches
US3466475A (en) * 1967-03-13 1969-09-09 Centre Electron Horloger Mechanical resonator
US3556537A (en) * 1968-08-02 1971-01-19 Poly Choke Co Inc The Tone arm
US3712051A (en) * 1971-07-15 1973-01-23 Seitz Sa Shock absorbing pivot bearing for watches
US20060187767A1 (en) * 2005-02-23 2006-08-24 Eta Sa Manufacture Horlogere Suisse Shock absorber bearing for a timepiece
US20060215499A1 (en) * 2005-03-23 2006-09-28 Michel Kohler Shock-absorbing bearing for timepiece
US20060233052A1 (en) * 2005-03-31 2006-10-19 Montres Breguet Sa Shock-absorber device for balance pivot and watch movement fitted with the same
US20110080810A1 (en) * 2009-10-07 2011-04-07 Hiraoka Masashi Timepiece bearing, movement, and portable timepiece
US20140286139A1 (en) * 2013-03-19 2014-09-25 Nivarox-Far S.A. Timepiece mechanism structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1673688A1 (de) * 1967-02-28 1971-08-05 Portescap Zapfenlager fuer Uhrwerke

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746239A (en) * 1952-10-02 1956-05-22 Parechoc Sa Timepiece bearing
CH343318A (fr) * 1958-04-11 1959-12-15 Roamer Watch Co Sa Mouvement de montre comportant un palier amortisseur de choc

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH201334A (fr) * 1937-11-08 1938-11-30 Fritz Marti Dispositif de fixation élastique de palier.
FR1185504A (fr) * 1957-10-29 1959-07-31 Ressort mortisseur de chocs pour paliers d'horlogerie
CH352628A (fr) * 1959-02-26 1961-02-28 Novochoc S A Palier amortisseur de chocs
CH356723A (de) * 1959-08-22 1961-08-31 Steffen Giovanni Stossdämpfendes Lager, insbesondere für die Lagerung der Zapfen von Uhrwellen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746239A (en) * 1952-10-02 1956-05-22 Parechoc Sa Timepiece bearing
CH343318A (fr) * 1958-04-11 1959-12-15 Roamer Watch Co Sa Mouvement de montre comportant un palier amortisseur de choc

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306028A (en) * 1966-01-04 1967-02-28 Citizen Watch Co Ltd Shock-proof device for watches
US3466475A (en) * 1967-03-13 1969-09-09 Centre Electron Horloger Mechanical resonator
US3556537A (en) * 1968-08-02 1971-01-19 Poly Choke Co Inc The Tone arm
US3712051A (en) * 1971-07-15 1973-01-23 Seitz Sa Shock absorbing pivot bearing for watches
US7344303B2 (en) * 2005-02-23 2008-03-18 Eta Sa Manufacture Horlogere Suisse Shock absorber bearing for a timepiece
US20060187767A1 (en) * 2005-02-23 2006-08-24 Eta Sa Manufacture Horlogere Suisse Shock absorber bearing for a timepiece
US20060215499A1 (en) * 2005-03-23 2006-09-28 Michel Kohler Shock-absorbing bearing for timepiece
US7234859B2 (en) * 2005-03-23 2007-06-26 Rolex S.A. Shock-absorbing bearing for timepiece
US20060233052A1 (en) * 2005-03-31 2006-10-19 Montres Breguet Sa Shock-absorber device for balance pivot and watch movement fitted with the same
US20110080810A1 (en) * 2009-10-07 2011-04-07 Hiraoka Masashi Timepiece bearing, movement, and portable timepiece
US8702301B2 (en) * 2009-10-07 2014-04-22 Seiko Instruments Inc. Timepiece bearing, movement, and portable timepiece
US20140286139A1 (en) * 2013-03-19 2014-09-25 Nivarox-Far S.A. Timepiece mechanism structure
US9235191B2 (en) * 2013-03-19 2016-01-12 Nivarox-Far S.A. Timepiece mechanism structure

Also Published As

Publication number Publication date
GB944975A (en) 1963-12-18
FR1339842A (fr) 1963-10-11
DE1255047B (de) 1967-11-23
CH427657A (fr) 1966-09-15

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