Year: 1897

page_text: Date of Application, 10th May, 1897-Accepted, 12th June, 1897
A communication from abroad by THE SOCIÉTÉ ANONYME DU GÉNÉRATEUR
DU TEMPLE, of Paris, in the Republic of France.
I, PHILIP MIDDLETON JUSTICE, of 55 and 56 Chancery Lane, in the County
of Middlesex, Fellow of the Chartered Institute of Patent Agents, 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 relates to certain improvements in tubulous steam boilers and
consists in the arrangement and construction of what may be termed a one sided>
boiler having a single lower water drum or collector (instead of two or a greater
number) which serves to reduce its size considerably and facilitate its installation
under conditions where space is an object.
In the accompanying drawing is represented a boiler and a modification of same
both adapted for burning liquid fuel.
Fig. 1 being a cross section through the combustion chamber and chimney.
Fig. 2 a plan on line M N Fig. 1, and
Fig. 3 a cross section showing a modification.
The boiler illustrated consists of a drum A or reservoir for steam and water
which may be connected to a large water drum or collector B by a single return
tube D Figs. 1 and 2 outside of the furnace. Said drums A and B are connected
inside by water evaporating tubes E passing across the combustion chamber C.
The fore part of the furnace is shown at F. The combustion chamber is comprised
between the lower collector B, the refractory hearth c, the vault of tubes E and
the part ab forming the wall of the fire box and composed of a thickness of fire
brick slabs, a sheet of asbestos cloth or the like, an outer sheet metal casing and a
screen G which is suitably supported away from the wall of the fire box so that an
air circulation is obtained between the two.
The course of the products of combustion is indicated by the arrows from which
it will be seen that they may pass along the length of the furnace and return
through the group of tubes E to the chimney.
The fire box wall a b can be replaced by a close wall of tubes as shown in Fig. 3
connecting the drum A with a small water drum d parallel with the lower collector B
and placed a little higher than the latter.
The drum D may also be connected to the drum A by a return tube d¹.
By replacing the hearth c by a grate it will be evident that the same type of
furnace can be arranged to burn solid fuel.
The arrangement of the one sided furnace above described is very advantageous
from a point of view of utilization of heat.
Having now particularly described and ascertained the nature of my said inven-
ion and in what manner the same is to be performed as communicated to me
by my foreign correspondent 1 declare that what I claim is :--
1. A tubulous steam boiler consisting of an upper steam and water drum, a
single lower water drum or collector, a group of tubes connecting same, a com-
bustion chamber formed by the space comprised between the hearth or grate, the

page_text: vault of tubes above same, the lower collector and a solid wall or a wall composed
of tubes connected to a lower drum, and with or without a return tube substantially
as described.
2. The improved arrangements and constructions of tubulous steam boilers
substantially as described and illustrated.
Deted the 10th day of Man 1907.
PHILIP M. JUSTICE.