Time striking device for timepiece
AssigneeRhythm Watch Co., Ltd.
InventorNorihiko Nakamura
Life of this patent
Estimating the term…
Abstract
A time striking device for a timepiece including an electric time striking means, an electric contact means electrically controlling the operation of the time striking means, a time striking selecting cam plate synchronously rotating with a time indicating gear train to control the electric contact means in a state capable of closing circuit action at the striking time, a one-minute cam plate synchronously rotating with the time indicating gear train to control the electric contact means in a state capable of closing circuit action at one minute interval, a one-minute control lever transmitting contact point control force of the one-minute cam plate to the moving contact plates of the electric contact means.
Claims5
A time striking device for a timepiece comprising:
- an electric time striking means;
- an electric contact means electrically controlling the operation of said time striking means;
- a time striking selecting cam plate synchronously rotating with a time indicating gear train to control said electric contact means in a state capable of closing circuit action at the striking time;
- a time striking control cam plate synchronously rotating with the time indicating gear train to control said electric contact means in a state capable of closing circuit action at shorter interval than said time striking selecting cam plate;
- a switching control lever, one end of which is engaged with said time striking control cam plate and the other end of which is engaged with an end portion of a moving contact plate of said electric contact means, to control switching on and off action of said electric contact means;
- and
- a closing circuit action of said electric contact means in a state capable of closing circuit action by said time striking selecting cam plate and said time striking control cam plate performing a time striking operation of said electric time striking means.
A time striking device for a timepiece comprising:
- an electric time striking means;
- an electric contact means electrically controlling the operation of said time striking means;
- a time striking selecting cam plate synchronously rotating with a time indicating gear train to control said electric contract means in a state capable of closing circuit action at a striking time;
- a one-minute cam plate synchronously rotating with the time indicating gear train to control said electric contact means in a state capable of closing circuit action at one minute interval;
- a one-minute control lever transmitting contact point control force of said one-minute cam plate to a moving contact plate of said electric contact means;
- a time striking operation of said electric time striking means being performed by the closing circuit action of said electric contact means in a state capable of closing circuit action by said time striking selecting cam plate and said one-minute cam plate;
- and
- said one-minute control lever being rotated to a position wherein said one-minute control lever cannot be engaged by said one-minute cam plate rotation while it is not in a striking time so that said one-minute cam plate can run idle.
Dependencies are inferred from the claim text.