Improvements in Carbon Dioxide Motors.
Year: 1899

page_text: Date of Application, 24th Jan., 1899-Accepted, 25th Feb., 1899
COMPLETE SPECIFICATION.
Improvements in Carbon Dioxide Motors.
I, LEWIS BOYD WHITE, Mechanical Engineer, of 1123, Broadway, in the City
of New York, Borough of Manhattan, County of New York, State of New York,
in the United States of America, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
1
This invention relates to improvement in carbon dioxide motors.
Heretofore such motors have been operated by carbon dioxide under high pres-
sure and attempts have also been made to heat the carbon dioxide before it enters
the motor for the purpose of increasing the pressure and in consequence thereof the
effective work of the motor, but mechanical difficulties presented themselves which
prevented the successful operation of such motors.
The object of my invention is to provide a new and improved motor provided
with means for heating the carbon dioxide immediately before it enters the piston
of the motor, and thus obviate all losses by cooling, condensation or friction in the
conducting tubes, and I accomplish this by making the heater a part of the chamber
for supplying the carbon dioxide to the motor and by locating this chamber and
heater in close proximity or adjacent to the valve chambers of the motor.
In the accompanying drawings forming a part of this specification, a vertical
longitudinal sectional view of one construction of my new and improved carbon
dioxide motor is shown.
The double piston A, in the cylinder B, works the rock shaft C, which carries
cams D, that actuate the pivoted arms E, which in turn act on the ends of the
stems of the inlet valves F and the exhaust valves G, are operated by the lever T.
When the inlet valve F is open the channel H is open and communication is
established between the interior of the cylinder B and the short neck J which is
attached to the chamber K containing the carbon dioxide to be admitted to the
cylinder for operating the motor.
The carbon dioxide is conducted into this chamber through a suitable supply
pipe L.
A suitable burner M of any desired kind is provided for heating this chamber
and the carbon dioxide therein, and I prefer to give this chamber an annular shape
in cross section, that is, to place an inner tube Ŏ into the chamber K, which inner
tube O at its ends is open to the air, where as the space between the inner tube O
and the chamber K is closed, at the ends, to complete and close the chamber and
the burner M for heating the carbon dioxide in the chamber is preferably located
within said inner tube for the purpose of preventing any loss of heat and for
heating the carbon dioxide rapidly.
The heated gas, the pressure of which has been increased, passes from the said
chamber directly into the cylinder and thus all loss of pressure and power by
condensation, cooling or friction is avoided.
I have illustrated and described only one type of motor but it is evident that any
type of carbon dioxide motor may be used in connection with the heating chamber,
located adjacent to the inlet ends of the cylinder.

page_text: As the heated carbon dioxide must be admitted into each end of the cylinder
alternately, a heating chamber is provided for each end of the cylinder.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I claim
is:-
1. A carbon dioxide engine, having a cylinder and piston and a carbon dioxide
heating chamber adjacent to each end of the cylinder and in communication there-
with, substantially as herein shown and described.
"
2. A carbon dioxide engine, having a heating chamber for the carbon dioxide
located adjacent to the cylinder and in communication therewith, substantially as
herein shown and described.
.3. In a carbon dioxide engine, the combination with a cylinder and piston
therein, of a carbon dioxide chamber located adjacent to the inlet to the cylinder
and in communication therewith and means for heating the contents of said chamber,
substantially as herein shown and described.
4. In a carbon dioxide engine, the combination with a cylinder and a piston
therein, of a carbon dioxide chamber located adjacent to the inlet to the cylinder
and in communication therewith, of a tube 'within said chamber and a heating
device within said tube for heating the carbon dioxide within the chamber, sub-
stantially as herein shown and described.
Dated the 24th day of January 1899.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.