US2620620A - Timepiece with automatic and manual winding mechanism - Google Patents

Timepiece with automatic and manual winding mechanism Download PDF

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Publication number
US2620620A
US2620620A US39978A US3997848A US2620620A US 2620620 A US2620620 A US 2620620A US 39978 A US39978 A US 39978A US 3997848 A US3997848 A US 3997848A US 2620620 A US2620620 A US 2620620A
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US
United States
Prior art keywords
recess
gear
pinion
pawl
arm
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
US39978A
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English (en)
Inventor
Meyer Friedrich
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.)
FELSA SA
Original Assignee
FELSA 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 FELSA SA filed Critical FELSA SA
Application granted granted Critical
Publication of US2620620A publication Critical patent/US2620620A/en
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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
    • G04B7/00—Combined normal and automatic winding up

Definitions

  • This invention relates to clocks or watches having both an automatic and a manual winding mechanism.
  • Another object is to provide in this pawl coupling a spring pawl fixed to a pinion and in engagement with an internal ratchet of a wheel, said ratchet being formed by holes uniformly distributed on the circumference of this wheel.
  • Fig. 1 is a top view of some parts of the Winding mechanism
  • Fig. 2 is a section along the line IIII of Fig. 1.
  • l designates the barrel arranged on the barrel arbor 2. On this latter is mounted the barrelwinding wheel 3, for instance, a ratchet, to which a hollow collet 4 is fixed.
  • the ratchet 3 is in mesh with one of the wheels, for instance, the crown wheel (not shown) of the manual winding mechanism.
  • the mainspring coiled into the barrel is not shown.
  • the ratchet it engages a pinion 5 to one end face of which a spring pawl 6 is riveted, the shape of which may be seen in Fig. 1.
  • This spring pawl has a long elastic arm 1 with a nose-shaped end 8 turned outwardly.
  • This pawl 6 is lodged within a recess 85 cut in the width of a gear wheel 9. This pawl is thus accommodated in the interior of the wheel 9.
  • the wheel 9 comprises holes i l distributed on its circumference and going through its whole width. These holes I I run with a portion of their one end into the recess Hi to form the spaces between teeth of an internal ratchet provided in the recess ill of the wheel 9 and which is engaged by the nose 8 of the elastic arm 7.
  • the outer curvature of the arm 1 is similar to the one of the wall of a groove !3 provided in the recess Ii), so that, under the influence of the pressure between the internal ratchet and the nose e, the arm I may bear against this wall. Downward buckling of arm 7 is prevented by annular lip Id of groove I 3.
  • the illustrated winding mechanism works as follows:
  • the wheel 9 engages a pinion M in drive connection, in a manner not shown, with the piv oted winding weight (not shown) of the automatic winding mechanism.
  • the oscillations of this winding weight are transmitted through idle wheels (not shown) to the pinion It.
  • This latter drives the wheel Sl which, through the internal ratchet and the spring pawl moves the pinion 5 rotating the ratchet 3 so that the mainspring is Wound up.
  • a timepiece comprising, in combination, a barrel; a barrel winding wheel coupled with said barrel; a pinion in drive connection with said barrel winding wheel; a gear wheel mounted coaxially with said pinion for rotation with respect thereto, said gear wheel having a recess, a groove in a curved wall of said recess and trap verse holes uniformly distributed adjacent to its circumference, said holes having a portion thereof extending transversely through the periphery of said recess to form an internal ratchet; and a flat spring pawl fixed to said pinion, engaging said internal ratchet and mounted in said recess,
  • said pawl having a part curved similarly to said wall and closely mounted in said groove.
  • a one-way motion transmitting device for timepieces comprising in combination, a rotatably mounted pinion to which motion in one direction only is to be transmitted; a gear concentricall'y located over said pinion and being mounted for rotation with respect thereto, said gear having a side facing said pinion and being formed with a recess in which an end face of said pinion is located and said recess having an annular side Wall formed with a plurality of teeth; and a pawl member interconnecting said gear and pinion, said pawl member being of a lesser thickness than the depth of said recess, having a central plate portion frxed to and located against said end face of said pinion, and having a springy arm integral with and extending from said central portion thereof, being located within said recess, and being provided with an outwardly bent end portion engaging said teeth of said annular side wall of said recess, said springy arm having approximately the-same curvature as said annular side wall of said recess, being located closely adjacent there
  • a one-way motion transmitting device for timepieces comprising in combination, a rotatably mounted pinion to which motion in one direction only is to be transmitted; a gear concentrically located over said pinion and being mounted for rotation with respect thereto, said gear having a side facing said pinion and being formed with a recess in which an end face of said pinion is located and said recess having an an nular side wall, said gear being formed with a plurality of bores extending therethrough adjacent the periphery thereof and intersecting said annular side wall of said recess so as to interrupt the same and form teeth therein; and a pawl member interconnecting said gear and pinion, said pawl member being of a lesser thickness than the depth of said recess, having a central, flat hub portion fixed to said end face of said pinion, and having a springy arm integral with and extending from said central portion thereof, being located within said recess, and being provided with an outwardly bent end portion engaging said teeth of said annular side wall of said
  • a one-Way motion transmitting device for timepieces comprising in combination, a rotatably mounted pinion to which motion in one direction only is tobe transmitted; a gear concentrically located over said pinion and being mounted for rotation with respect thereto, said gear having a side facing said pinion and being formed with a recess in which an end face of said pinion is located and said recess having an annular side wall formed with a plurality of teeth, said gear having an annular lip extending inwardly of said side wall and spaced from the bottom of said recess to form a groove therewith; and a pawl member interconnecting said gear and pinion, said pawl member being of a lesser thickness than the depth of said recess, having a central portion fixed to said end face of said pinion, and having a springy arm extending from said central portion thereof, being located within said recess, and being provided with an outer end engaging said teeth of said annular side wall of said recess, and said springy arm having a portion thereof located
  • a one-way motion transmitting device for timepieces comprising in combination, a rotatably mounted pinion to which motion in one direction only is to be transmitted; a gear concentrically located over said pinion and being mounted for rotation with respect thereto, said gear having a side facing said pinion and being formed with a recess in which an end face of said pinion is located and said recess having an annular side wall, said gear being formed with a plurality of bores extending therethrough adjacent the periphery thereof and intersecting said annular side wall of said recess so as to interrupt the same and form teeth therein, said gear having an annular lip extending inwardly of said side wall at the mouth of said recess and forming a groove with the bottom of said recess; and a pawl member interconnecting said gear and pinion, said pawl member being of a lesser thickness than the depth of said recess, having a central portion fixed to said end face of said pinion, and having a springy arm extending from said central portion thereof
  • a timepiece mechanism having a barrel and a barrel winding Wheel
  • a gear having opposite side faces one of which is formed with a recess having an annular side wall provided with teeth
  • a pinion operatively connected to the barrel winding wheel to turn the same and having an end face substantially parallel to said opposite side faces of said gear and located adjacent to said recess
  • support means supporting said gear and pinion for rotation indipendently of each other about an axis passing through the center of said gear and being normal to said side faces thereof
  • a one-piece pawl member having a hub portion joined to said end face of said pinion for rotation therewith and having a springy arm extending from said hub portion and located along said teeth at said side wall of said recess, said springy arm of said pawl member having an end located between a pair of adjacent teeth at said side wall of said recess to turn said pinion with said gear when the latter is rotated in one direction about said axis, said end of said springy arm riding over said teeth when
  • said pawl member being located within said recess and being made from a thin, sheet material so that the thickness of the timepiece mechanism is not appreciably increased by said pawl member.
  • said springy arm of said pawl member having a width substantially greater than the thickness thereof.
  • said springy arm of said pawl member having a curvature approximately equal to that of said annular side Wall of said recess and said end of said springy arm being bent away from said axis.
  • said gear having an annular lip at the mouth of said recess thereof forming a groove with the bottom of said recess, and said springy arm of said pawl member being located within said groove so that said annular lip prevents buckling of said springy arm.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
  • Mechanical Operated Clutches (AREA)
US39978A 1948-04-05 1948-07-21 Timepiece with automatic and manual winding mechanism Expired - Lifetime US2620620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH277730T 1948-04-05

Publications (1)

Publication Number Publication Date
US2620620A true US2620620A (en) 1952-12-09

Family

ID=4481379

Family Applications (1)

Application Number Title Priority Date Filing Date
US39978A Expired - Lifetime US2620620A (en) 1948-04-05 1948-07-21 Timepiece with automatic and manual winding mechanism

Country Status (3)

Country Link
US (1) US2620620A (de)
CH (1) CH277730A (de)
DE (1) DE803763C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160004223A1 (en) * 2013-04-10 2016-01-07 The Swatch Group Research And Development Ltd Winding device for self-winding automatic watch

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH298562A (fr) * 1952-06-24 1954-05-15 Horlogere De Porrentruy Phenix Pièce d'horlogerie à remontages automatique et manuel.
US20240176295A1 (en) 2022-11-25 2024-05-30 Rolex Sa Transmission mechanism for an automatic winding chain

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US304234A (en) * 1884-08-26 Tebois
GB190023200A (en) * 1900-12-19 1901-11-02 Charles William Lancaster Improvements in Clutches for Transmitting Rotary Motion.
DE435719C (de) * 1926-10-19 Laufwerkefabrik Hemmungsrad fuer starke Spielzeugfedertriebwerke
DE592986C (de) * 1931-08-14 1934-02-19 Aegler Sa Fabrique Des Montres Uhr mit Vorrichtung zum Aufziehen mittels zweier gleichzeitig oder abwechselnd wirkender Aufziehkraefte
CH216720A (fr) * 1940-10-24 1941-09-15 Schild Sa A Mécanisme de remontage automatique à poids oscillant pour mouvements de montres à remontoir.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US304234A (en) * 1884-08-26 Tebois
DE435719C (de) * 1926-10-19 Laufwerkefabrik Hemmungsrad fuer starke Spielzeugfedertriebwerke
GB190023200A (en) * 1900-12-19 1901-11-02 Charles William Lancaster Improvements in Clutches for Transmitting Rotary Motion.
DE592986C (de) * 1931-08-14 1934-02-19 Aegler Sa Fabrique Des Montres Uhr mit Vorrichtung zum Aufziehen mittels zweier gleichzeitig oder abwechselnd wirkender Aufziehkraefte
CH216720A (fr) * 1940-10-24 1941-09-15 Schild Sa A Mécanisme de remontage automatique à poids oscillant pour mouvements de montres à remontoir.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160004223A1 (en) * 2013-04-10 2016-01-07 The Swatch Group Research And Development Ltd Winding device for self-winding automatic watch
US9836027B2 (en) * 2013-04-10 2017-12-05 The Swatch Group Research And Development Ltd Winding device for self-winding automatic watch

Also Published As

Publication number Publication date
CH277730A (de) 1951-09-15
DE803763C (de) 1951-04-09

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