Show O r r- r cS- cS I and Magnetic Coupling Device A much wider range of application is claimed for a new magnetic coupler and accelerator than that possessed by the friction clutch The couplings consist of two cast steel rings one with annular grooves in which the magnetic coil is securely fastened and the other acting as an armature or keeper A cross section of the two members shows the well known form of the horseshoe magnet and Its keeper Friction and the eddy currents currents currents cur cur- rents induced in the armature plates by the magnetism of the field are the two components in these clutches the sum of which is the torque The induction in- in duc duclon ion component is a maximum dropping off as speed is attained thus giving a remarkably smooth acceleration acceleration tion capable of automatic control In Inmost Inmost Inmost most work an electric contact device for control can be thrown directly across the line as asit it is practically Impossible impossible impossible Im im- possible to produce a sudden jerk The device also gives prompt and absolute release regardless ss of load cutting out the shaft in rotation and anda a two ampere current in the magnetizing ing coil colI is sufficient to control a power horse-power unit at ordinary speed The The- device may likewise be used in connection with gear trains to operate operate operate oper oper- ate machines at different speeds |