Improvements in or relating to Self-propelling Road Vehicles and Locomotives.
Year: 1896

page_text: France),
Date of Application (in United Kingdom), th June, 1896
Complete Specification Left, 19th Oct., 1896--Accepted, 2nd Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in or relating to Self-propelling Road Vehicles
and Locomotives.
We, the SOCIÉTÉ DES GÉNÉRATEURS À VAPORISATION INSTANTANÉE,
SYSTÈME, L. SERPOLLET, of 15 Rue des Halles Paris, France, Engineers, do
hereby declare the nature of this invention to be as follows:-
This invention has for object to facilitate the running and the working of
self-propelling vehicles and locomotives running on rails and provided with
instantaneous steam generating boilers of our system, in which the internal space
occupied by the steam and water is very small and does not therefore allow of the
use of floats.
The general arrangement of apparatus according to this invention is represented
diagrammatically in Fig. 1 of the accompanying drawings. This apparatus has for
object to maintain a constant predetermined pressure in all parts of the interior of
the boiler, independently of the variations in resistance resulting from varying
gradients or the condition of the track, and independently of the number of series
of evaporating tubes constituting the boiler, and also independently, within certain
limits, of the fluctuations in the heating-effect of the furnace. It enables the
constant predetermined pressure to be varied at will and the boiler to be emptied
very rapidly so as to produce an energetic scouring or sweeping of the internal
surfaces thereof.
Fig. 2 shows a vertical section taken through the axis of a non-return-valve
which regulates the pressure in the interior of the boiler.
Fig. 3 is an elevation, partly in vertical section, showing a valve-box which
contains several valves and is arranged in front of the above mentioned return-
valve when the boiler comprises two or more distinct series of evaporating tubes,
which is usually the case when it is desired to have a large amount of heating-
surface.
Figs. 4 and 4 are respectively an elevation and a section showing the valve-
arrangement for controlling the passage of steam to the motor cylinder.
Fig. 5 shows in vertical section one of our boilers comprising in this example two
series of evaporating tubes, each having its separate feed-pipe.
Fig. 6 is a plan of two vessels that act as heaters for the exhaust-steam with the
object of rendering it invisible.
The several figures are drawn to different scales.
A is the boiler which is fed with water from a tank B by means of a pump C.
The steam generated in the boiler passes to the motor-cylinder D. Any feed-water

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Self-propelling Road Vehicles
and Locomotives.
We, the SOCIÉTÉ DES GÉNÉRATEURS À VAPORISATION INSTANTANÉE,
SYSTÈME L. SERPOLLET, of 15 Rue des Halles. Paris, France, Engineers, 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 object to facilitate the running and working of self-
propelling vehicles or locomotives running on rails, and which are provided with
instantaneous steam generating boilers of our system, in which the internal space
occupied by the steam and water is comparatively very small and therefore does
not allow of the use therein of floats.
The general arrangement of apparatus according to this invention is represented
diagrammatically in Fig. I of the drawings filed with our Provisional Specification.
This apparatus has for object to maintain a constant predetermined pressure in all
parts of the interior of the boiler, independently of the variations in resistance
resulting from varying gradients, or the condition of the track, and independently
of the number of series of evaporating tubes constituting the boiler, and also
independently, within certain limits, of the fluctuations in the heating-effect of the
furnace. Its construction is such as to enable the constant predetermined pressure
to be varied at will and of the boiler being emptied very rapidly so as to produce
an energetic scouring or sweeping of the internal surfaces thereof.
Fig. 2 shows a vertical section taken through the axis of a non-return valve
which serves to regulate the pressure in the interior of the boiler.
Fig. 3 is an elevation, partly in vertical section, showing a valve-box which
contains several valves and is arranged in front of the above mentioned non-return
valve when the boiler comprises two or more distinct series of evaporating tubes,
which is usually the case when it is desired to have a large amount of heating-
surface.
Figs. 4 and 4 are respectively an elevation and a section showing the valve-
arrangement for controlling the passage of steam to the motor-cylinder.
Fig. 5 shows, in vertical section, one of our boilers comprising in this
example two series or batteries of evaporating tubes, each having its separate
feed-pipe.
Fig. 6 is a plan of two vessels that act as heaters for the exhaust steam with the
object of rendering it invisible.
The several figures are drawn to different scales.
A is the boiler, which is fed with water from a tank B by means of a pump C.
The steam generated in the boiler passes to the motor-cylinder D. Any feed-water
supplied in excess by the pump, which works continuously, returns to the tank B
by way of a pipe d.
E (Fig. 2) is a box containing a valve E' by means of which the pressure in the
boiler is controlled. The position of the valve E' is regulated by means of its
spindle p, a lever F, a tension-spring R, which is capable of turning about a
centre o, and a runner F', which is connected with one end of the spring R, and.is
adapted to be slidden by hand along the lever F, either directly or through the
medium of a rod I, which works in a rocking sleeve m.
When the boiler comprises more than one series of separate evaporating tubes,
the box E has arranged in front of it, for the purpose of maintaining the same
pressure in each series, another box G (Figs. 1 and 3), with which it communicates
through a pipe c and which contains as many non-return valves as there are series, of
evaporating tubes.

page_text: and G, the feed suction and delivery pipes a, a¹ b 6' and branch pipes all 6 and
the steam outlet pipe of the steam supply regulating valve H, operated by the
lever I, which enables the required quantity of steam to be supplied to the motor-
cylinders for enabling all desirable operations to be effected without the aid of a
stopping-brake, substantially as described.
4. The arrangement, after the manner of a bridge behind the fire-grate, of a box
of cast metal with two large receptacles ; and j capable of being easily cleaned
and in which the steam that has issued from the cylinders circulates and is
superheated before passing into the exhaust-chimney in order to render this
exhaust invisible and silent.
5. The general combination and arrangement of the valve-boxes E and G, the
feed pipes for effecting delivery towards the generator A and towards the tank B,
the steam outlet pipe and the valve H, and the receptacles; and substantially as
described and shown.
Dated this 19th day of October 1896.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.