Magnetic clutch with a magnetic lining

Claim 1

A MAGNETICALLY OPERATED FRICTION CLUTCH THE CLOSING ACTION OF WHICH IN RESPONSE TO EXCITATION MAY BE MODULATED, COMPRISING DRIVING AND DRIVEN MAGNETIC MEMBERS WHICH ARE RELATIVELY ROTARY WHEN THE CLUTCH IS RELEASED, MEANS FOR MOUNTING AT LEAST ONE OF SAID MEMBERS FOR AXIAL MOVEMENT RELATIVE TO THE OTHER, SAID MEMBERS HAVING OPPOSED SOLID LOW-RELUCTANCE, FERROUS METAL FACES, AN ELECTROMAGNETIC COIL PRODUCING WHEN EXCITED A FLUX FIELD INTERLINKING SAID MEMBERS THROUGH SAID METAL FACES FOR AXIALLY ATTRACTING THE DRIVING AND DRIVEN MEMBERS ONE TO THE OTHER TO EFFECT APPROACH BETWEEN THEM, AND A LINER INTERPOSED BETWEEN SAID FACES CONSISTING OF A SUBSTANTIALLY WEAR-RESISTING FRICTIONAL SUBSTANCE CONTAINING HEAT-RESISTANT SHREDS OF RELATIVELY HIGH RELUCTANCE TO SAID FLUX, INTERSPERSED WITH COMMINUTED PARTICLES OF A FERROUS MAGNETIC MATERIAL OF RELATIVELY LOW RELUCTANCE TO SAID FLUX, SAID COMMINUTED MATERIAL REDUCING THE OVER-ALL MAGNETIC RELUCTANCE OF THE LINER TO A VALUE BELOW THAT OF SAID FRICTIONAL SUBSTANCE BUT ABOVE THAT OF SAID SOLID FERROUS FACES.