Permanent Magnet Electromagnet Driven and Restored Print Hammer Mechanism
Original Publication Date: 1980-Nov-01
Included in the Prior Art Database: 2005-Feb-14
Fig. 1 illustrates a pictorial view of a combined permanent magnet/ electromagnet-operated print hammer mechanism. A stiff hammer member 1 having an end face 2 is shown mounted on flexural springs 3 and 4. Spring 3 is held in a flexed position by flux from permanent magnet 5 conducted through armature 6 to a pole face 7. Flexural spring 4 is permanently formed to be deflected to the right as shown in Fig. 1, but which may be attracted toward the left in Fig. 1 into contact with pole face 8 of armature 9 when actuating coil 10 magnetizes armature 9 at times when printing is desired.