US3635012A - Set stem mechanism for watches - Google Patents

Set stem mechanism for watches Download PDF

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Publication number
US3635012A
US3635012A US27523A US3635012DA US3635012A US 3635012 A US3635012 A US 3635012A US 27523 A US27523 A US 27523A US 3635012D A US3635012D A US 3635012DA US 3635012 A US3635012 A US 3635012A
Authority
US
United States
Prior art keywords
stem
legs
bracket
locking portion
sleeve
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
US27523A
Other languages
English (en)
Inventor
Raymond J Grohoski
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.)
Timex Group USA Inc
Original Assignee
Timex Corp
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 Timex Corp filed Critical Timex Corp
Application granted granted Critical
Publication of US3635012A publication Critical patent/US3635012A/en
Assigned to CHASE MANHATTAN BANK, N.A., THE reassignment CHASE MANHATTAN BANK, N.A., THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FREDERIKSPLEIN HOLDING 1970 B.V., TIMEX CLOCK COMPANY, A DE CORP., TIMEX COMPUTERS LTD., A DE CORP., TIMEX CORPORATION, A DE CORP., TIMEX ENTERPRISES, INC., A BERMUDA CORP., TIMEX GROUP LTD., A BERMUDA CORP., TIMEX MEDICAL PRODUCTS LTD., A BERMUDA CORP., TIMEX N.V.
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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • G04B3/043—Locking of the operating element, also by mounting in a concealed place
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means

Definitions

  • a stem release sleeve is slidably UNITED STATES PATENTS mounted about the set stem to contact the bracket disengaging it from the stem in order to facilitate removal of the crown t and tem assembly 1,926,713 9/1933 Cochin ....58/67 398,957 3/1889 Faxon ..58/98 X 5 Claims, 3 Drawing Figures PATENTED mu 8 m2 SHEU 1 [IF 2 INVILYTOR RA YMONO J. GROHOSKI BY ATTORNEY FIG. I
  • PATENTEDJAHBISYZ sum 2 or 2 A TTORNE Y INVENTOR. RAYMOND J. GROHOSKI BY SET STEM MECHANISM FOR WATCHES BACKGROUND OF THE INVENTION
  • the present invention relates to watches and more particularly to a set stem mechanism for watches.
  • U.S. Pat. Nos. 1,409,067 and 2,480,843 U.S. Pat. No. 1,409,067 pertains to oil well machinery and discloses a sleeve which is designed to release a locking member mounted about a body member.
  • U.S. Pat. No. 2,480,843 discloses a locking plug and jack having a sleeve arrangement slidable on a stem to bias the lock spring arms to a release position.
  • the present invention pertains to a set stem mechanism for watches comprising a set stem having a shaped body portion with locking portions thereon to be engaged by the legs of a stern bracket in either a set or an idle position.
  • a set pinion is formed integrally with the stem and engages the crown gear of the minute wheel when the stem is in a set position.
  • a stem release sleeve is slidably mounted about the stem to cam apart the legs of the stem bracket to facilitate removal of the crown and stem assembly.
  • FIG. 1 is a front view of the invention with portions of the drawing cut away to show the important parts thereof;
  • FIG. 2 is a view similar to FIG. 1 showing the stern release sleeve of the invention in an operative position;
  • FIG. 3 is a cutaway side view of the subject set stem mechanism taken along the line 3-3 of FIG. 2.
  • the set stem mechanism of the present invention comprises a set stem having one end extending outwardly from the watch 11 and having a crown 12 mounted on the extremity thereof.
  • the other end of the stem 10 is joumaled in a bearing 13 within the watch 11.
  • the set stem 10 includes a substantially cylindrical body portion 14 and a protruding locking portion 16 which forms a recess 17 together with enlarged body portion 18.
  • the stem 10 further includes a tapering portion 19 which extends from enlarged portion 18 to the body section 21.
  • a set pinion 22 is formed integrally with the stem 10 between body section 21 and the end portion 23.
  • the set stem 10 is held in place by a pincer-type stem bracket 24 which engages protruding portion 16 in an idle position and when the stem 10 is retracted to a set position the bracket 24 engages one surface 26 of enlarged portion 18.
  • the tapered surfaces 27 and 28 of the locking portion 16 cam the bracket 24 into a particular position during the to and fro movement of the stem 10.
  • the base 29 of the bracket 24 includes the bearing means 13 for the stem 10.
  • a stem release sleeve 31 is slidably mounted about the stem 10.
  • the sleeve 31 includes a countersunk portion 32 which clears locking portion 16 and an elongated aperture 33 slidable along body portion 14.
  • the leading edge 34 of the sleeve is tapered to facilitate engagement with the curved end portions 36 of the bracket 24 forcing the pincerlike legs 37 apart. This releases the stem 10 permitting rapid removal of the crown and stem assembly from the watch 11 without the use of special hand tools. The possibility of damage to the stem bracket 24 is also minimized.
  • the set stem 10 is retracted by grasping the crown l2 and pulling away from the watch 11.
  • the surface 27 of locking portion 16 forces the curved end portion 36 of the stem bracket 24 outwardly until surface 28 is reached.
  • the ends 36 of bracket 24 then drop into the recessed portion 17 between the outwardly extending portions 16 and 18 on the stem 10.
  • the set pinion 22 engages the crown gear 38 of the minute wheel 39.
  • the minute pinion 41 which is coupled to the minute wheel 39 then transmits the motion to the hour wheel 42.
  • the minute wheel 39 and the hour wheel 42 are both supported for rotation in the front frame 43.
  • the dial frame 44 holds the minute wheel 39 in place assuring proper engagement of crown gear 38 with stem pinion 22.
  • the stem design itself eliminates many separate parts and provides a more accurate and less expensive means for setting a watch 11.
  • a set stern mechanism for watches comprising:
  • a set stem having an elongated body portion at the end protruding from the watch case, an intermediate locking portion having a pair of sloping faces, and a second end portion,
  • a set stem bracket having a base portion including an aperture extending therethrough to be engaged by the second end portion of the set stem and a pair of upwardly extending legs which engage the sloping faces locking portion of the set stem, and
  • a substantially cylindrical stem release sleeve said sleeve being slidable along the body portion of the stem to engage and spread apart the legs of the stem bracket thereby releasing the stem from the bracket.
  • the set stem further includes a set pinion formed integrally therewith said pinion being journaled for rotation in the stern bracket aperture, and
  • the stem release sleeve includes a countersunk entrance portion which clears the locking portion of the set stem and tapered entrance surfaces to facilitate release of the stem bracket legs from the locking portion as the legs are forced outwardly therefrom by the movement of the sleeve.
  • the set stem includes an enlarged intermediate portion to act as a stop for the stern release sleeve, and, the
  • the locking portion comprises a protruding portion having a first face sloping outwardly from the elongated body portion of the stem along which the legs move during setting and a sloping portion extending in the opposite direction back to the stem body, forming a recess with the enlarged body portion.
  • the locking portion comprises a protruding portion which forces the stern legs apart from a first locked position until the legs move into a second locked position for setting.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
  • Mechanical Operated Clutches (AREA)
  • Electric Clocks (AREA)
US27523A 1970-04-13 1970-04-13 Set stem mechanism for watches Expired - Lifetime US3635012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2752370A 1970-04-13 1970-04-13

Publications (1)

Publication Number Publication Date
US3635012A true US3635012A (en) 1972-01-18

Family

ID=21838224

Family Applications (1)

Application Number Title Priority Date Filing Date
US27523A Expired - Lifetime US3635012A (en) 1970-04-13 1970-04-13 Set stem mechanism for watches

Country Status (9)

Country Link
US (1) US3635012A (forum.php)
JP (1) JPS5340107B1 (forum.php)
BE (1) BE765481A (forum.php)
CA (1) CA928972A (forum.php)
CH (2) CH534382A (forum.php)
DE (1) DE2117788C3 (forum.php)
FR (1) FR2086039B1 (forum.php)
GB (1) GB1291969A (forum.php)
NL (1) NL7104432A (forum.php)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080089185A1 (en) * 2006-10-13 2008-04-17 Jason Perry Martin Instrument Case Assemblies

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US398957A (en) * 1889-03-05 Watch-case pendant
US479930A (en) * 1892-08-02 Watch-case pendant
GB191516784A (en) * 1915-03-11 1916-04-13 Charles Leon Depollier Improvements in Watches.
US1292441A (en) * 1918-03-18 1919-01-28 Charlse L Depollier Watch.
US1926713A (en) * 1932-07-29 1933-09-12 Samuel N Kagan Watch mechanism

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US340850A (en) * 1886-04-27 Stem winding and setting mechanism for watches
US347994A (en) * 1886-08-24 Watch-case pendant
CH983A (fr) * 1889-05-28 1889-08-26 Faxon Frank George Bélière et pendant perfectionnés pour montres
CH71082A (fr) * 1915-03-22 1916-04-17 Charles Hurbruegg Dispositif appliqué au pendant de boîtes de montres pour limiter le mouvement axial dans les deux sens d'une tige de remontoir
CH71219A (fr) * 1915-04-14 1916-05-16 Nationale S A Usines Fusionnee Couronne de remontage pour montres à mise à l'heure au pendant
DE878024C (de) * 1944-01-05 1953-05-28 Eugene Chiffelle Uhr

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US398957A (en) * 1889-03-05 Watch-case pendant
US479930A (en) * 1892-08-02 Watch-case pendant
GB191516784A (en) * 1915-03-11 1916-04-13 Charles Leon Depollier Improvements in Watches.
US1292441A (en) * 1918-03-18 1919-01-28 Charlse L Depollier Watch.
US1926713A (en) * 1932-07-29 1933-09-12 Samuel N Kagan Watch mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080089185A1 (en) * 2006-10-13 2008-04-17 Jason Perry Martin Instrument Case Assemblies
US8534911B2 (en) * 2006-10-13 2013-09-17 Jason Perry Martin Instrument case assemblies

Also Published As

Publication number Publication date
FR2086039B1 (forum.php) 1974-04-26
DE2117788A1 (de) 1971-10-28
BE765481A (fr) 1971-08-30
DE2117788C3 (de) 1979-07-05
JPS5340107B1 (forum.php) 1978-10-25
DE2117788B2 (de) 1978-11-02
CH534471A4 (forum.php) 1972-11-15
CH534382A (de) 1972-11-15
NL7104432A (forum.php) 1971-10-15
GB1291969A (en) 1972-10-04
CA928972A (en) 1973-06-26
FR2086039A1 (forum.php) 1971-12-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CHASE MANHATTAN BANK, N.A., THE

Free format text: SECURITY INTEREST;ASSIGNORS:TIMEX CORPORATION, A DE CORP.;TIMEX COMPUTERS LTD., A DE CORP.;TIMEX CLOCK COMPANY, A DE CORP.;AND OTHERS;REEL/FRAME:004181/0596

Effective date: 19830331