Improvements in Means or Apparatus Employed in Heating Railroad Cars or other similar Vehicles.
Year: 1888

page_text: Date of Application, 10th Sept., 1888
Specification Accepted, 19th Oct., 1888
COMPLETE SPECIFICATION.
Improvements in Means or Apparatus Employed in Heating Railroad
Cars or other similar Vehicles.
DANIEL DANA SEWALL of Portland in the County of Cumberland, State of Maine,
one of the United States of America, Manager of the Sewall Safety Car Heating
Company of Portland in the same County, 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 :-
This invention has for its object to construct a car or carriage heating apparatus
wherein steam is taken from the locomotive boiler and conveyed from car to car by
a main steam pipe and employed to heat the cars.
In accordance with this invention suitable tanks are employed which are placed
beneath the seats of the car, or at other convenient or desired places.
The branch pipe leads from the main steam pipe to a steam pipe placed within the
said water tanks and another pipe leads from the steam pipes contained within the
tanks which is employed as the exit for the water of condensation.
The pipes within the tanks may be arranged in different ways, as for instance as a
single continuous pipe through the tank, or as a loop or continuous circuit of pipe
within the tank, or as a jet nozzle, in which latter instance the steam will issue
directly into the water or into the tank to contain the water.
Figure 1 shows in plan view a car heating apparatus embodying this invention,
the dotted lines representing a portion of the side walls and seats of a car.
Figure 2 a sectional view showing in elevation a loop of steam pipe contained
within a water tank and
Figure 3 a detail showing a branch pipe and jet nozzles contained within a water
tank, and an overflow for the tank.
Figure 4 is a diagrammatic view indicating the general arrangement of the apparatus
in side elevation taken in a direction at right angles to Figure 2 but to a smaller
scale, but the general arrangement may be modified to meet the requirements of the
particular description of carriage to which it may be fitted.

page_text: The dotted lines A represent a portion of the side walls of a car and the dotted
lines a represent the transversely arranged seats within the car, it being understood
as having usual doors at the sides.
The main steam pipe extends from end to end of each car it being adapted to be
coupled to the next car or to the locomotive, the said main steam pipe preferably
being arranged beneath the car.
The branch pipe e leads from the main steam pipe, several such branch pipes being
arranged within each car, each branch pipe extending into the tank as c¹, see dotted
lines Fig. 1.
Pipes 2, 3, 4, 5, e, continue in succession from the branch pipe c they passing
through and forming a steam circuit through the tanks and c, the pipe c is joined
to a vertical pipe emptying into the pipe d which is arranged beneath the car
parallel with the pipe but inclined downwardly from the ends of the car toward the
centre.
Each branch pipe e is provided with a valve c" by which steam is admitted to each
steam circuit.
The pitched pipe d is arranged as a receiver of water of condensation which will
accumulate at the lowest point as at the centre, at which point a steam trap of any
suitable construction or a valve is secured-as at d¹.
It will thus be seen by referring to Figure 1, that the steam enters the
pipes ², c³, c, c³, c, and empties into the pipe d, and as the tanks c', c', are filled
with water or other suitable fluid such heating medium will be directly heated to
impart heat indirectly in the car.
By referring to Fig. 2 in lieu of the pipes c³, c³, c², c³, c, which include two tanks
and pass through the partition between adjacent seats a single loop of pipe is con-
tained in each tank, it comprising the pipes 2, 3, and the return pipes 4, 5, while the
pipe which conducts water of condensation to the pipe d is connected with the
return pipes at the lowest point.
The tank e in this instance will also be filled with water or other suitable fluid.
By referring to Figure 3 it will be seen that a branch pipe e leads from the main
steam pipe which is provided with a valve c10, and at the upper end of the pipe e
within the tank f two jet nozzles 6, 7, extend in opposite directions.
With this form the tank fis at the commencement empty and as the valve c¹ is
opened the steam enters the tank issuing from the jet nozzles 6, 7, and as the steam
contained within the tank condenses it gradually becomes filled with water until the
overflow pipe is reached which conducts the surplus water into the pipe d from
which it is discharged through a suitable trap or valve.
After the tank has been partly filled with water the steam from the nozzles will
heat the water.
I do not confiue myself to the particular construction and arrangement shown as
it is obvious that the same may be slightly modified and yet without materially
departing from the specific arrangement shown in the drawing.
I do not desire to limit my invention to any particular manner of delivering the
water of condensation, as circumstances may cause many changes.
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. In a car heating apparatus, the main steam pipe, and branch pipes leading
therefrom, and a circuit or loop of pipe connected with the branch pipe, combined
with one or more tanks through which said circuit or loop of pipe passes, or in which
it is contained, said tanks being adapted to receive water or any suitable noncongealable
fluid.
2. In a car heating apparatus, the main steam pipe, and branch pipes c, the circuit
of pipes c, c³, c, c, c, combined with the tanks c¹ and c substantially as described.
3. In a car heating apparatus, the main steam pipe adapted to be coupled to the
next car or to the locomotive, two or more branch pipes leading from it in each car,

page_text: more
and a loop or circuit of pipe connected therewith, combined with one or
tanks containing the said pipes, the exit pipe es, and the pipe d for the water of
condensation.
4. In a car heating apparatus, the main steam pipe, and branch pipes cl, and one
or more jet nozzles, combined with a tank containing said nozzles, and an overflow
pipe, substantially as described.
5. In a car heating apparatus, fluid containing tanks or vessels contained in the
cars and steam pipes for heating the fluid contained in said tanks or vessels and a
main steam pipe.
6. A car heating apparatus constructed and arranged, substantially as described.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the Applicant.