Abstract: A battery-operated watch or clock has a knob which is axially shiftable been a first terminal position recessed in a rear housing wall and a second terminal position projecting therefrom. In the recessed position, in which the knob is manually rotatable upon removal of a battery cover surrounding same, its rotation resets both the minute and hour hands of the timepiece to enable its adjustment, especially upon a replacement of a spent battery. In the projecting position, such rotation only displaces the hour hand to facilitate a changeover between standard and daylight-saving time or an adjustment to a different time zone.

Abstract: A first contact arm on the minute shaft of a clockwork switches, once every 0 minutes, the mode of energization of an electronic gating circuit with two sections in the inputs of an inverting anticoincidence (NOXOR) gate working into a setting input of a flip-flop which controls the driving circuit of a striking mechanism, each section having two parallel branches of relatively inverting character and with a relative phase delay whereby any switchover results in a brief de-energization of that setting input and thus in a setting of the flip-flop. A pulse generator, included in or energized by the driving circuit, works into a stepping input of a binary pulse counter provided with four output leads whose pattern of energization represents the numerical values from 1 through 12.

Abstract: An electric clock having clockwork is provided with a signaling arrangement hich automatically resets for operation of an alarm or waking signal and does not require resetting each day by the user. Resetting is accomplished by a contact device which switches on once during each twenty four hour period at a preselected hour corresponding to the hour at which the alarm is to begin. A second contact device switches on for a brief period during each hour and triggers a bistable multivibrator which is automatically reset each hour. The output of the bistable device is applied to a logic circuit whose other input derives from a third contact device setting the minute at which the alarm is to be initiated.

Abstract: A timepiece with an electrodynamically controlled clockwork has a torsion ndulum intermittently coupled through a gear train with the clockwork for the maintenance of its oscillations. The gear train includes a first pinion mounted on a weighted rocker tending to hold it in mesh with a driving gear actuated by the clockwork; the torsion spring of the pendulum carries near its suspension point a horizontal spur receivable in a slot of a stationary mounting member so as to come periodically to rest on a slot edge, this spur being engageable in its arrested position by a hump on a cam disk entrained by a second pinion which meshes with the first pinion and decouples the latter from the associated gear against the countervailing force of the rocker weight as long as the spur is immobilized. When the spur-biasing force of the torsion spring changes direction, the gear train is re-established and the spur receives an impetus from the engaging hump as it moves away from the arresting slot edge.

Abstract: A timepiece with an electrodynamically controlled clockwork has a torsion ndulum intermittently coupled through a gear train with the clockwork for the maintenance of its oscillations. The gear train includes a first pinion mounted on a weighted rocker tending to hold it in mesh with a driving gear actuated by the clockwork; the torsion spring of the pendulum carries near its suspension point a horizontal spur receivable in a slot of a stationary mounting member so as to come periodically to rest on a slot edge, this spur being engageable in its arrested position by a hump on a cam disk entrained by a second pinion which meshes with the first pinion and decouples the latter from the associated gear against the countervailing force of the rocker weight as long as the spur is immobilized. When the spur-biasing force of the torsion spring changes direction, the gear train is re-established and the spur receives an impetus from the engaging hump as it moves away from the arresting slot edge.