the object of my inventionis to increase the power of electro-magnets by neutralizing the induced currents, and thus rendering available the full dynamic value of the battery ;'and to this end my improvement.
the metallic medium which may be employedmay be of various kinds, but that which I generally propose to use as most convenient for the purpose is what is known as metal foil.
the mediummay be applied in various ways; but for illustration I have shown in the f:;cc'e :npauying drawings two ways of apply ingit.
1n l i gure 1 metal foil ain the form of a sheet or ribbon, is shown wound or lapped around and between the successive layers of coils b b of insulated wire.
Fig. 2the entire length of the insulated wire is shown aslluving a ribbon, d, of metal foil wound around it, to form a complete clothing or covering.
