Year: 1885

page_text: I, JAMES WILLIAM RESTLER of the Southwark and Vauxhall Water Works;
Nunhead in the County of Surrey, Engineer do hereby declare the nature of this
Invention to be as follows:-
The object of my Invention is to provide a steam generator of small weight
relatively to a large steam raising capacity with freedom from priming of the steam
generated.
1
According to my Invention in a suitable outer casing constituting the shell of
the generator I arrange a fire place, tubes and smoke box, and a water space which
at the lower part is of an annular form and surrounds the fire place and in its turn
is surrounded by the outer skin of the boiler an annular space intervening. Tubes
or passages pass through this part of the water space forming a communication for
the gases from the fire into the annular space surrounding the water space last
mentioned. The water space surrounding the fire place is continued by an
extensive water space extending across the whole of the inside of the generator
and having above it a top chamber with which the outlet to the chimney.
communicates.
- Tubes form a communication through this part of the water space from the.
annular space before referred to into the top chamber tubes also passing from the
crown of the fire box-formed by the bottom of the upper portion of the water space
through the said water space and into the top chamber. At intervals inside the
water space extending from the upper or large part thereof into the lower part
surrounding the fire box are pipes or conduits forming circulating passages for the
water. The steam from the water space may be collected through tubes or passages
leading into an annular or other receptacle situated in the top chamber above the
water space so that the said annular or other receptacle acts as a superheater of
the steam. I prefer to make the generator of a circular form but I do not limit
myself thereto. Steam generators constructed according to my Invention are
especially applicable to small vessels, torpedo boats and the like where lightness
and economy of space are desirable.
Dated th: 00-1 1
:

page_text: Improvements in Steam Generators.
I, JAMES WILLIAM RESTLER of the Southwark and Vauxhall Water Works
Nunhead in the County of Surrey Engineer 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 :-
The object of my Invention is to provide a steam generator of small weight
relatively to a large steam raising capacity with freedom, from priming of the
steam generated. I will describe my Invention with reference to the accom-
panying drawing. Figure 1 is a vertical section. Figure 2 a plan with the top
removed and Figure 3 a horizontal section on the line 1. 2 Figure 1 of a steam
generator constructed or arranged according to my Invention. Figures 4 and 5 and
Figures 6 and 7 represent two modifications as hereinafter described.
According to my Invention (as illustrated by Figures 1. 2 and 3) in a suitable
outer casing A constituting the shell of the generator I arrange a fire place B
tubes c and d (or c.'d and e) and a smoke box F and a water space G which at the
lower part g is of an annular form and surrounds the fire place B and in its turn
is surrounded by the part a of the outer skin of the boiler an annular space H
intervening. The tubes or passages c pass through the part g of the water space
and form a communication for the gases from the fire place B into the annular
space H. The part g of the water space surrounding the fire place is continued by
an extensive water space G extending across the whole of the inside of the
generator and having above it the top chamber F constituting the smoke box
with which the outlet to the chimney I communicates.
The tubes & form a communication through this part of the water space from
the annular space H into the top chamber F.
The tubes e pass from the crown of the fire box B (formed by the bottom of the
upper portion of the main water space) through the said water space and into
the top chamber F. These tubes e may be dispensed with but I prefer to use them
as they form a convenient mode of staying the crown of the fire box to the top of
the boiler and also assist in starting the, draught when the fire is first lighted.
At intervals inside the water space extending from the upper or large part thereof
into the lower part g surrounding the fire box are pipes or conduits J forming
circulating passages for the water. The steam from the water space G. may be
collected through tubes or passages leading into an annular or other receptacle K
situated in the top chamber F above the water space so that the said annular or
other receptacle K acts as a superheater' of the steam. I prefer to make the
generator of a circular form as shewn but I do not limit myself thereto as it may
be made of any other convenient or suitable shape-L is the fire door and M is
the steam outlet pipe. Figure 4 represents in vertical section and Figure 5 in plan
with the chimney removed a modification of the arrangement wherein the passages J
are not used and the steam space surrounds the smoke box F. Figures 6 and 7
are respectively a vertical section and a plan with the smoke box and chimney
The
removed shewing another modification in the arrangement of the parts.

page_text: general construction and main parts however remain the same in all the arrange-
ments illustrated and I have marked in Figures 4 to 7 the parts which correspond
with those shewn in Figures 1. 2 and 3 with the same letters of reference by means
of which the modifications Figures 4 to 7 will be readily understood without
further description..
Steam generators constructed according to my Invention are especially applicable
to small vessels, torpedo boats and the like and generally where lightness and
economy of space and a low centre of gravity are desirable for example in fire
engines and other road engines.
In some cases the part of the water space at g may be dispensed with and then
it will be desirable to build the fire box sides of brickwork.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed I declare that what
I claim is,-
1st. In a steam generator the combination with the outer shell of the generator
of an internal fire-box with a water space above the fire-box (or both above and
surrounding the fire-box) and with a smoke box above the water space and the
space H and tubes c and d (or tubes c d'and e) forming communications from the
fire box to the smoke box through and past the water space substantially as
herein before described and with or without the circulating passages J.
2nd. The arrangement and combination of parts constituting the steam generator
illustrated in Figures 1. 2 and 3 and the modifications illustrated by Figures 4 and 5
and Figures 6 and 7 of the accompanying drawings.
Dated thin oond I... us at 1000