IMPROVEMENTS IN AND ADDITIONS TO DYNAMO OR MAGNETO ELECTRIC GENERATORS
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by Henry Benjamin Ford at the Office
of the Commissioners of Patents on the 9th October 1883.
HENRY BENJAMIN FORD Surgeon Dentist late of Trinidad and now residing at
No 63 Lambeth palace road London IMPROVEMENTS IN AND ADDITIONS TO
DYNAMO OR MAGNETO ELECTRIC GENERATORS
1 The force of attraction which each pole of a field-magnet or magnets exerts
upon an armature while approaching such pole, shall be counterbalanced by the
force exerted against such magnetic attraction (in the same proportion) in com-
pressing air, gas, vapor, or a spring of any kind, until the full, or end of the
attraction is reached, that is when the several poles of the field magnet or magnets
oppose the several points which would correspond to poles on a revolving armature
ring or drum, when the force of magnetic attraction shall be at it's maximum; then
the power so stored in the compressed air, gas, vapor, or spring shall by the most
convenient mechanical device be given out again and exerted in carrying the said
points or poles on the armature ring past the opposing poles of the field magnet or
magnets,
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2nd The power stored between the neutral points which would lie between a +
and pole in the field magnet or magnets and a pole in the said field would be
nearly sufficient to drive the armature wheel past the field poles to the next neutral
point when the balancing of the force of magnetic attraction against the force of
compression of air, gas, vapor or a spring would again begin.
3rd The power absorbed in causing such an armature ring to revolve at a given
speed would not be more than that necessary to cause any wheel of similar size to
revolve at the same speed against ordinary mechanical friction, existing in all
machines because the powers of attraction and retention would be balanced
against each other by the force stored during the compression of air, gas vapor or
a spring
4th If coils of wire are wound upon soft-iron points of such a balanced armature
ring which is revolving within a circle of magnetic poles, and electric currents
collected, the amount of electricity produced would be independent of the power
absorbed in revolving the ring with it's armature coils; thus in proportion, as the
balancing of magnetic forces acting on the ring with it's armature coils; and the
arrangements made for collecting electricity from the said armature coils, separately
D971

page_text: approached perfection, so would the power absorbed in revolving the ring be small,
and the current delivered be great; and it may be possible for the absorbtion of
one man power in revolving the armature wheel at a certain speed to produce a
current or currents of electricity equal in value to one or more horse power
5th The number of compressors applied to a machine for compensating the
magnetic attraction in the field of magnetic poles may vary to accord with, the
construction of the revolving drum or ring carrying the armature coils
6th Currents from the generator shall act through helices or coils which by
magnetic action shall regulate the amount of compression necessary to counteract
a certain magnetic moment in the generator, and thus vary the speed of a motor of
a certain fixed power. Thus in proportion as the amount of one current passing
through lamps motors &c and returning to the machine through one regulating
helix or coil is increased by the extinction of a lamp or lamps or other cause, so
will the current from the machine be reduced by causing the amount of com-
pression to be less and thus check the speed of the motor at the magnetic moment,
and so reduce the whole current of the machine to suit the altered circumstances.
Should more current be required; then the return current through the said coil
would be reduced when the compression would be increased to counteract greater
magnetic moment. and the current thus increased to suit the new condition
7 In the same way a current passing from the generator through a coil before
going to lamps or other work. or a special current of a fixed ultimate quantity and
E. M. F. taken from the machine and passed through a coil would act magnetically
and thence mechanically and automatically cause the air space in a cylinder for the
compression of air, gas, or vapor to be reduced, or a spring to have less tension;
just in proportion as said current from the machine got stronger so would the
magnetic moment get greater, and would require greater force of compression to
counteract it, which would be accomplished by giving the compressor or compressors
less space to compress in
8th In proportion as the current or currents feeding the field magnet or magnets
and those generated in the armature coils got stronger so would the magnetic
moment of the machine increase, therefore the necessity to regulate the compen-
sating storage of power to suit the altering conditions to a motor of unit power