Gebruder Junghans Gmbh

Walter Obergfell

Robert Wolber

Hans Flaig

Roland Maurer

Max Stubner

A stator comprises a one-piece U-shaped stator sheet having a pair of elongate parallel legs. The legs form pole shoe bridges at their front ends for their reception of a driven motor. At least one of the pole shoe bridges interconnects the legs adjacent their front ends. A coil-carrying bobbin is mounted on one of the legs, the length of the wound coil being longer than its diameter. A separate yoke sheet is fastened to the legs adjacent rear ends thereof to secure the bobbin on the leg. The stator is formed by first stamping-out a stamping which includes the parallel legs and the yoke, with the yoke being integrally attached to the legs by means of webs. After the stamping undergoes the usual pretreatment, the yoke sheet is separated from the legs, whereupon the coil bobbin is slipped onto the leg from the rear. Then, the yoke sheet is secured to the rear ends of the legs to prevent removal of the coil bobbin.

Clockwork stepping motor stator and process for making same

A clock movement comprises front and rear housing shells. A support plate is mounted within and between the shells. A gear movement is mounted on a rear side of the support plate and faces the rear shell. A hands movement is arranged on a front side of the support plate and is drivingly connected to the gear movement. A circuit board is connected to the support plate. A motor for the gear movement comprises a stator sheet and a coil bobbin. The stator sheet is fastened in engaging relationship to a rear side of the support plate adjacent a rotor opening in the stator sheet. The coil bobbin is mounted on the stator sheet and includes a plurality of pins which define coil terminals. The pins are soldered to a circuit of the circuit board. The circuit board is disposed in front of the support plate in spaced relationship therewith and is of arc-like configuration such that legs of the arc straddle the minute and hour wheels of the hands movement.

Clock movement

An on-off slide switch is arranged on a circuit board, preferably that of a battery-operated electronic clock, for actuating a stepping motor thereof. The slide switch can be moved to different positions and interacts with several electric paths of the circuit board. The switch is arranged movably along one edge of the circuit board and bears against such edge via guide elements. The switch carries at least one contact element for shunting a plurality of tracks of the board and a grip for its manual operation. The slide switch, together with all elements carried by it is designed in the form of a punched-out, flexible metal part and is easily installed on or removed from the circuit board without the need for separate fasteners.

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Schramberg, Germany

Walter Obergfell