Timepiece movement

Claim 2

A timepiece movement comprising a timer gear, an hour hand, another hand for indicating another segment of time and controlled by the movement, an additional gear controlling the hour hand and magnetically positioned with respect to said timer gear, said timer gear being coaxial with the additional gear and actuated by the movement of the timepiece, manually operable means for selectively rotating the additional gear by at least one step and correspondingly rotating the hour hand without influencing the indication of any other hand, and means for interlocking interlocking said gears in the direction of rotation upon normal setting of the timepiece.

Claim 3

A timepiece movement according to claim 1, wherein said gears consist of hour wheels.

Claim 4

A timepiece movement according to claim 1, wherein said gears consist of minute wheels.

Claim 5

A timepiece movement according to claim 1, wherein said gears have correspondingly located openings normally respectively in alignment, said means for interlocking said gears comprising a supporting plate carrying pins engaging in the openings of one of said gears, means movably supporting said supporting plate, and means for moving said supporting plate to move said pins to enter the openings in the other of said gears.

Claim 6

A timepiece movement according to claim 4 wherein said plate supporting means comprises a spring, said plate moving means comprises an arm for flexing said spring, and said manually operable means comprises a control stem operatively connected with said arm and axially movable selectively for moving said arm.

Claim 7

A timepiece movement comprising in combination: first gear means controlling the hour hand in said movement; second gear means mounted coaxially with said first gear means, said second gear means being driven commonly with another hand for indicating another time segment; said first gear means being magnetically coupled to said second gear means whereby said first gear means is normally driven by said second gear means through said magnetic coupling; manually operable means for rotating said first gear means by at least one step, said magnetic coupling being sufficiently weak as to not overcome the frictional forces between said second gear means and said other hand, whereby said hour hand is rotated without influencing the indication of said other hand; and means controlled by said manually operable means for interlocking said first and second gear means in the direction of rotation, whereby to enable normal setting of said timepiece.

Claim 8

A timepiece movement comprising in combination: first gear means controlling the hour hand in said movement; second gear means mounted coaxially with said first gear means, said second gear means being driven commonly with another hand for indicating another time segment; said first gear means being magnetically coupled to said second gear means whereby said first gear means is normally driven by said second gear means through said magnetic coupling; manually operable means for rotating said first gear means by at least one step, said magnetic coupling being sufficiently weak as to not overcome the frictional forces between said second gear means and said other hand, whereby said hour hand is rotated without influencing the indication of said other hand; and means controlled by said manually operable means for interlocking said first and second gear means in the direction of rotation, whereby to enable normal setting of said timepiece.

Claim 9

A timepiece movement comprising: a power train; a timer gear; an additional gear identical with said timer gear and coaxially mounted for relative rotation therebetween; a rotatably mounted hour hand drivingly connected with one of said gears; another hand for indicating another segment of time and rotatably mounted coaxially with said hour hand; means connecting one of said gears with said power train to drive said gear for rotating said hour hand in the usual manner; manually operated means connected with the other of said gears for driving said gear to rotate said hour hand to change the hour indication thereof without affecting the other said hand; magnetic means normally coupling said gears for maintaining angular coincidence therebetween, whereby said hour hand may be manually adjusted to change the hour indication thereof and the magnetic means will maintain the relative relation with respect to lesser time segments, and means under the control of said manually operated means for selectively positively coupling said gears to enable normal simultaneous setting of said hands.

Claim 10

A timepiece movement comprising: a power train; a timer gear; an additional gear identical with said timer gear and coaxially mounted for relative rotation therebetween; a rotatably mounted hour hand drivingly connected with one of said gears; another hand for indicating another segment of time and rotatably mounted coaxially with said hour hand; means connecting one of said gears with said power train to drive said gear for rotating said hour hand in the usual manner; manually operated means connected with the other of said gears for driving said gear to rotate said hour hand to change the hour indication thereof without affecting the other said hand; magnetic means normally coupling said gears for maintaining angular coincidence therebetween, whereby said hour hand may be manually adjusted to change the hour indication thereof and the magnetic means will maintain the relative relation with respect to lesser time segments, and means under the control of said manually operated means for selectively positively coupling said gears to enable normal simultaneous setting of said hands.

Claim 11

A timepiece movement according to claim 7, wHerein said gears have correspondingly located openings normally respectively in alignment, said means for positively coupling said gears comprising a supporting plate carrying pins engaging in the openings of one of said gears, means movably supporting said supporting plate, and means for moving said supporting plate to move said pins to enter the openings in the other of said gears.

Claim 12

A timepiece movement according to claim 8 wherein said plate supporting means comprises a spring, said plate moving means comprises an arm for flexing said spring, and said manually operated means comprises a control stem operatively connected with said arm and axially movable selectively for moving said arm.

Claim 13

A timepiece movement according to claim 9 wherein said stem is movable between three axially spaced positions including a first inoperative position, a second intermediate position establishing a driving connection with said other gear for rotating only said hour hand, and a third position for moving said arm to positively couple said gears.