IMPROVEMENTS IN THE ARRANGEMENT OF MECHANISM TO BE EMPLOYED IN CONNECTION WITH APPARATUS for ProduciNG LIGHT AND HEAT BY MEANS OF ELECTRICITY
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by Charles Davis at the Office of the
Commissioners of Patents on the 11th November 1878.
CHARLES DAVIS, of 47, Pall Mall, in the County of Middlesex.
"IMPROVEMENTS
IN THE ARRANGEMENT OF MECHANISM TO BE EMPLOYED IN CONNECTION WITH
APPARATUS for ProduciNG LIGHT AND HEAT BY MEANS OF ELECTRICITY."
This Invention consists in improvements in the arrangement of mechanism to be
employed in connection with electro-magnetic and other apparatus or machines in
which currents of electricity to be employed for lighting and heating purposes are
produced by means of a rotary motion imparted to the said apparatus or machines,
or any part thereof, and whereby the necessary amount of electricity for lighting
and heating purposes is produced in a more simple, efficacious, and economical manner
than is the case with the means at present employed.
For the purpose of my said Invention I utilise the power or force exerted or
produced by the revolution of traction wheels, axles, and shafts for the purpose of
imparting the desired rotary motion to the before mentioned apparatus or machines
or any desired part thereof.
In the case of ordinary railway carriages, carts, and other vehicles in which the
axles do not revolve with the wheels, a cog-wheel, bevilled or otherwise as may be
desired or requisite, or a drum is attached to or formed on the inner surface of the
dise or other suitable part of one of the wheels of the vehicle, or it is connected
to the nave thereof in such a manner as to revolve therewith, the centre of such
cog-wheel or drum being provided with an aperture so as to be free of the axle.
The said cog-wheel or drum is of less diameter than the wheel of the vehicle to
which it is connected. When a cog-wheel is employed as described the rotary
motion is transmitted therefrom by any suitable or well known arrangement of
similar wheels to any of the apparatus for producing or developing electricity by
rotary motion. When desired to ensure the perfect insulation of the apparatus for
producing the electricity a part of the arrangement of cog-wheels may be connected
by an endless band or chain and pulleys as will be well understood; and when a
drum is employed the motion is transmitted therefrom by means of an endless band

page_text: or chain to a second drum connected to the before mentioned apparatus. If desired.
cog-wheels may also be employed in connection with the last described arrangement.
It will be well understood by persons conversant with mechanism that by varying
the relative sizes of the diameters of the several cog-wheels or drums the number
of revolutions transmitted to the apparatus for producing the electricity may either
be greater or less in number than or equal to those of the wheel or axle from which
the motion is obtained. In a vehicle where the axles and wheels revolve together
the before mentioned cog-wheel or drum may be mounted on the axle instead of on
one of the wheels as above described.
The action of the apparatus is as follows:-When the carriage or other vehicle
is caused to travel and a rotary motion consequently given to the wheels or wheels
and axles thereof the said rotary motion is communicated by the means herein before
described to the apparatus for producing or developing the electric current, or to
such part thereof as may be desired; the current when produced is conducted
by well known means to the apparatus for effecting the desired heating or lighting,
which last mentioned apparatus may be of any desired or suitable construction.
My said Invention can be applied to any suitable apparatus for heating or
lighting any vehicle, such as railway carriages and carts, and it can also be
applied to bicycles for the purpose of generating a light when the same is in
motion.