LIGHTING OF TRAINS AND OTHER VEHICLES
Year: 1884

page_text: I WILLIAM ALEXANDER DUNCAN of 19 Scaresbrick St Southport Merchant in
the County or Duchy of Lancaster do hereby declare the nature of my Invention
for ELECTRIC LIGHTING OF TRAINS AND OTHER VEHICLES to be as follows:-
1st By the application of a Brush of Steel or other Metal placed in connection
with a revolving Axle or Drum driven at any speed such Axle or Drum being
connected to a Steam Engine, Carriage, Van or any travelling body.
The same application to the periphery of a wheel.
Also the same application to be applied to the Metals or Rails on which the said
Vehicles run-the current so generated is then conveyed through a Dynamo
Machine or other suitable Electro Motor and thence to be stored in accumulators
and thence distributed throughout the vehicles by means of suitable conductors for
lighting purposes.
I propose to place in conjunction with a revolving wheel or axle, a brush of
metal connected with a Dynamo Machine then generating the electricity by the
revolutions of the said axle or wheel--my claim being that instead of a stationary
Engine being required to drive the revolving armature and shaft, I can attain the
same results by employing the said axle or wheel, when working for the purpose
of locomotion, such as the axle or wheel of a Locomotive Engine, carriage or
vehicle.

page_text: I WILLIAM ALEXANDER DUNCAN of 19 Scarisbrook Street Southport in the
County of Lancashire, Engineer do hereby declare the nature of my Invention
for IMPROVEMENTS IN ELECTRIC LIGHTING, OF TRAINS AND OTHER VEHICLES and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
-
The object of this invention is that instead of a separate or stationary Engine
being required to drive the revolving armature, and shaft of a dynamo, as at
present I place in conjunction with a revolving wheel, or axle of a locomotive
engine, Railway carriage or other vehicle an armature commutator and necessary
field magnets, thus generating the Electricty by the revolution of the said wheel
or axle, and by that means attaining the same results as the aforesaid stationary
engine and Boiler would give.
Fig. (1) is a cross section shewing the wheels A. A, and the axle B of a
Locomotive or other Vehicle shewing the armature C and field magnets D which
are suspended by means of suitable springs E. E, to the floor H, of a carriage, or
other convenient places on a Locomotive, F. F, shewing the means whereby I keep
the Field magnets in their relative position to the armature.
Fig. (2) shews an end view of the armature C.-B the axle of the Locomotive or
other vehicle D. D. D. D, the field magnets and, E. E, the springs;-Figs (1)
and (2) are drawn to the same scale and the same letters of reference indicate
identical parts..
By this application a locomotive, railway carriage, or other vehicle running at,
say, 40 miles per hour with a 4 ft wheel, will generate sufficient electricity by my
direct application of an armature to the axle, or wheel, and a proportionate
reduction in the diameter of a wheel will allow, a slower rate of speed and still
give a sufficient quantity of Electricty to enable me to light a number of lamps.
I sustain the Dynamo and keep it in its proper position by means of the
springs E. E, from the floor and the bush G. G. Fig. 2.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that
what I claim is
1stly The method of Lighting a Railway train, Locomotive, or other vehicle by
means of a Dynamo, the armature of which revolves with the axle of a Locomotive,
railway carriage or other vehicle as before described and shewn on the accompaying
drawing.
2ndly The method of sustaining the field magnets so as to keep them in their
proper position as befor set forth.
3rdly The invention substantially as before described or any slight modification
of the same.
LE FEVRE & Co.,
Agents for the Applicant.