. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. brake shoe. 430-speed. ELECTRO - MAGNETIC CLUTCH. Reverse changeA is the motor, of which the armature shaft is extended at both ends to receive pinions B and B drives gear D, andpinion C drives gear E throughidler F. B is smaller than C,and D is larger than E


. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. brake shoe. 430-speed. ELECTRO - MAGNETIC CLUTCH. Reverse changeA is the motor, of which the armature shaft is extended at both ends to receive pinions B and B drives gear D, andpinion C drives gear E throughidler F. B is smaller than C,and D is larger than E. It fol-lows that gear D runs slower thangear E, and in the opposite direc-tion. Both gears D and E runloose on shaft G, and each of themis keyed or bolted to a part H or Iof the magnetic clutch, which parts are iron-clad electro-magnets thatcan be energized or de-energized at will. J is the armature or keeper,which is keyed to shaft G, but can slide over it. If I is energized, J is at-tracted toward it and is compelled to revolve with gear D, thus givingthe driving shaft a slow motion. If H is energized, J is attracted towardit and follows the motion of gear E, thus giving the driving shaft a fastmotion in the opposite direction. The shifting mechanism is so arrangedthat only one electro-magnet is in action at one 431. ELECTRO-MAGNETIC CLUTCH. The figure shows amagnetic clutch with its armature and shaft in cross section. A and A are the magnets, each pro-vided with a brass bush coil of wire C is placedin an annular groove in themagnet, and held in positionby a ring of lead D calkedinto a recess of the extension E of the magnet is turned down so as to make agear fit, and a further extension F takes the collector rings G. As willbe seen, there are two collector rings for each magnet: one for leadingthe current into the coil, and one for the return. H, armature keyed toslide on shaft and may have a belt pulley.


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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910