Frankl & Kirchner Gmbh & Co Kg

Frankl & Kirchner Gmbh Co Kg Fabrik Fur Elektromotoren U. Elektrische

Kg Fabrik Fur Electromotoren U. Electrische Apparate

Frankl & Kirchner Gmbh & Co.

Karl Lengsfeld

Erich Link

Hans Erndt

Hilmar Wittler

Adolf Martin

An electromotive variable-speed and control drive particularly for use in industrial sewing machines and comprising a coupling coil casing radially surrounding a coupling-brake disk and a brake coil casing radially relocated towards the center. Both are positioned in the brake end shield. In order to avoid a sticking of the coupling-brake disk with high alternations and a delay of the break-down and build-up of the magnetic fields, a brake coil casing has been relocated radially so near to the center that it is situated within the brake pad in front of the armature ring. On the other hand, there is an undercut and a recess at the coupling coil casing and a recess at the disk flywheel which assures that no axial forces can occur at the radial gaps.

Electromotive variable-speed and control drive particularly for use in

An electromotive control drive mechanism, in particular for industrial sewing machines, comprises a continuously drivable motor and a brake/clutch unit connected therewith. A clutch disk connected in a rotationally fixed manner with a driven shaft can, by axial movement and by overcoming a clutch air gap, be brought into frictional engagement with a clutch support which is connected in a rotationally fixed manner with the rotor of the motor. A brake disk connected in a rotationally fixed manner with the driven shaft can be brought into frictional engagement with a brake support which is rotationally fixed. A clutch coil and a brake coil are also provided. In order to reduce the expense of the brake/clutch unit without burdensome actuation noises arising, only one clutch/brake disk is provided, and mechanisms are provided for adjusting the clutch air gap and the automatic readjustment of the clutch air gap.

Adjustable electromagnetic clutch brake

Adjustable electromagnetic clutch/brake

An electric motor control and variable speed drive includes a motor housing, a driven rotor connected to a disk flywheel and an intermittently driven shaft, and nonrotatably supporting a clutch disk and a brake disk. The clutch disk is couplable with a frictional surface on a magnetic armature disk. The brake disk is couplable with a frictional surface of a brake armature disk. Energization of respective clutch and brake windings effect respectively coupling of the clutch disk and of the brake disk to the respective aforementioned frictional surfaces. The clutch winding is disposed on the disk flywheel. The clutch disk and the brake disk are provided with frictional linings. The clutch disk is disposed between the magnetic armature disk and a friction surface of the disk flywheel. The brake disk is disposed between the brake armature disk and a friction surface on the bearing plate.

Electric motor with air cooled clutch and brake

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Plankstadt, Germany

Karl Lengsfeld