Improvements in and relating to Steam Boilers.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Steam Boilers.
We, WILLIAM HENRY SMITH and WILLIAM ADAMS KNAPP, doing business at
number 62, South Canal Street, in the City of Chicago, County of Cook and State of
Illinois, one of the United States of America, 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 :-
The invention relates to improvements in Steam Boilers, and more particularly to
that class known as water tube boilers.
The object of the invention is to support the battery of water tubes in which the
water is heated and generated into steam from suitable supports independent of
the steam drum, and also to provide a saddle which connects with the headers of the
water tubes, and with the steam drum, and by which the battery of water tubes are
supported.
The invention consists first in supporting the water tubes or header sections from a
cross beam er support through rods, and also the steam drum.
It further consists in connecting the front end of the battery of water-tubes with a
saddle supported by rods connected with cross beams and in supporting the steam
drum in the saddle to communicate with the battery of water tubes, whereby the
weight of the tube supported wholly from the beams, as also the steam drum.
It further consists in the saddle supported by the cross beams, having the several
headers connected therewith and forming a communicating passageway between the
headers and steam drum.
It further consists in a novel manner of supporting the rear end of the battery of
water tubes.
It further consists in connecting a series of headers or sections together through
the vertical and side opening by means of small wrought iron or steel nipples, whereby
the expansion and contraction in the tubes is provided for.
It further consists in certain novel features in the construction and arrangement of
parts all as hereinafter explained.
Referring to the accompanying Drawings:
Figure 1, is a front view of a boiler partly in section, showing the saddle to which
the headers are connected and the front cross beam, and the rods for supporting the
saddle;
Figure 2, is a rear elevation showing a similar manner of supporting the rear ends
of the tubes;
Figure 3, is a longitudinal section through the casing, showing the water tubes and
steam drum in full lines;
Figure 4, is a rear view showing the upper and lower saddles and the means of
connecting the same together and with the header.
The headers or sections, A, are made in polygonal form with the several sides of
one section abutting against and connected to others of the series, the connection
being made by means of wrought iron or steel nipples, a, Figure 1, expanded between
them, by which it will be seen that each of the series if connected at the top and
bottom and at its opposite parallel sides to another one of the series and at each of its
four angular sides with another of the series, both ends being constructed in a similar
manner, and have the tubes connected to each section in a similar manner to boilers
provided with headers in common use.
To a cross beam, B, supported at each end on a column, B¹, are connected depending
rods, B1, to the lower end of which are connected in any suitable manner a saddle or
support, B, having angular and upper and lower parallel faces corresponding to the
shape of the headers and to which saddle said headers are connected in a similar
manner as to each other.

page_text: This saddle is made in hollow form with its upper face concave or formed on the
are of a circle corresponding to the diameter of the steam drum, and in which concave
portion the steam drum, D, rests.
The drum is cut away at a point over the hollow saddle and the drum and saddle are
connected through a steam-tight joint, and from which it will be seen that the battery
of water tubes is supported entirely independent of the steam drum. It will also be
seen that the saddle forms the connecting passageway between the several sections of
the header with the steam drum.
The headers at the rear end are connected together in a similar manner to those at
the front, and a saddle, B1, is also employed to support the steam drum at the rear
end, but in this case the saddle which is connected directly to the cross beam is
provided with a series of depending circulating pipes or tubes, C, having at their lower
ends a similar saddle, C¹, which in this case is provided with angular and upper and
lower parallel faces corresponding to the shape of the headers and to which saddle
the headers are connected as to each other.
The mud drum, E, is forined with upper and lower parallel and vertical faces in
such manner that the drum shall communicate with the header through both parallel
and vertical openings.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what we
claim is―
1. In a steam boiler, the water tubes, the cross beam or support, the rods connected
to the water tubes to support the tubes or header sections, and the steam drum also
supported by the rods, substantially as described.
2. The battery of water tubes, having the front end supported by a saddle, the
cross beam and rods connecting the cross beam with the saddle, and the steam drum
supported by the saddle to communicate with the headers of the water tubes through
the saddle, substantially as described.
3. The saddle supported by the cross beam, having the several headers connected
therewith aud forming a communicating passageway between the headers and the
steam drum, substantially as described.
4. The steam drum, having its rear end supported by a saddle suspended from a
cross beam, a series of circulating pipes connected to the saddle supporting the drum
and a saddle connected to the lower end of the circulating pipes having vertical and
upper and lower parallel side faces and openings therein to match the header section,
substantially as described.
5. The battery of water tubes having its rear end supported by a saddle, the cross
beam and the rods connecting the cross beam with the saddle, and the tubes connecting
the saddle with the header of the water tubes, substantially as described.
6. The header section provided with opposite parallel side faces having openings
therein, and a mud drum having corresponding matching faces provided with openings
communicating with the header section through both the vertical and parallel sides,
substantially as described.
Dated this 1st day of April 1900
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.