Improvements in Tubulous Steam Boilers
Year: 1896

page_text: Date of Application, 1st Oct., 1896
Complete Specification Left, 26th June, 1897-Accepted, 31st July, 1897
UNAL SPEC
Improvements in Tubulous Steam Boilers
We, SUMMERS HUNTER, Engineer, of The Villa, The Green, Wallsend-on-Tyne and
GEORGE DOBIE WEIR, Engineer, of Fern House, St. Oswin's Avenue, Cullercoats, both
in the County of Northumberland, do hereby declare the nature of this invention to
be as follows:-
Our invention relates to the construction of tubulous steam boilers in such a
manner as to provide extensive heating surface in a compact form and to ensure
ample circulation of the water.
According to our invention we arrange water boxes obliquely on each side of the
fire and fix therein transverse tubes, which may be of various diameters, so that the
products of combustion on their way to the flues shall pass through these tubes and
thereby assist in heating the water contained in the said water boxes.
These water boxes are in communication with a steam and water chamber which
may be of cylindrical form and connected to flanges at the upper ends of the water
boxes or such steam and water chamber may be made as an upward continuation of
the water boxes and form a connection between them; in this latter case suitable
stays will be used.
If desired provision may be made by means of valves placed between the top of the
water boxes and the steam chamber whereby all connection between the said water
boxes and steam chamber may be shut off when desired.
We also arrange a number of bent tubes on the fire side of the water boxes and
around which the flame and hot gases from the fire pass before reaching the transverse
tubes in the water boxes.
These bent tubes are connected to and in communication with the upper and lower
ends of the water boxes in such a manner as to provide complete circulation of the
water in the water boxes and through the said tubes.
It will be evident that the steam and water chamber above the water boxes may be
variously formed.
Dated this 1st day of October 1896
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.
Improvements in Tubulous Steam Boilers.
We, SUMMERS HUNTER, Engineer, of The Villa, The Green, Wallsend, and GEORGE
DOBIE WEIR, Engineer, of Fern House, St. Oswin's Avenue, Cullercoats, both in the
County of Northumberland, do hereby declare the nature of this invention and in
Price &

page_text: what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
Our invention relates to the construction of tubulous steam boilers in such a manner
as to provide extensive heating surface in a compact form and to ensure ample
circulation of the water.
We will describe our invention aided by the accompanying drawings in which
Fig. 1 is partly an end elevation and partly a transverse section showing one form of
the boiler constructed according to our invention, Fig. 2 is a longitudinal elevation
with the outer plate of the smoke box partly broken away, Fig. 3 is a part
longitudinal internal section and Fig. 4 is a transverse section showing a slight
modification.
Water boxes A are arranged obliquely on each side of the fire B and have tubes C,
which may be of various diameters, passing through them in a transverse direction so
that the products of combustion on their way to the flues F and chimney G shall pass
through these tubes and thereby assist in heating the water contained in the said
water boxes A. These water boxes are in communication with a steam and water
chamber D, which may, as shown at Figures 1, 2, 3, be of cylindrical form and
connected to flanges formed at the upper ends of the water boxes A, or such steam
and water chamber D may be made in one with and as an upward continuation of the
water boxes A and form a connection between them as represented at Fig. 4 in
which case it will be suitably stayed as shown.
If desired provisicmay be made by means of valves placed between the top of the
water boxes A and t. e.water and steam chamber D whereby all connection between
the said water boxes ud stean chamber may be shut off when desired.
We also arrange a number of bent tubes E which are placed on the fire side of the
water boxes A and around which the flame and hot gases from the fire pass before
reaching the transverse tubes C in the water boxes.
These tubes E are, as shown in Figures 1 and 4, connected to and in communication
with the upper and lower ends of the water boxes A in such a manner as to provide
complete circulation of the water in the water boxes and through the said tubes.
It will be evident that the steam and water chamber D may be otherwise formed
without departing from the peculiar character of our invention.
Having now particularly described and ascertained the nature of our said invention
and in what inanner the same is to be performed we declare that what we
claim is:-
1. A tubulous steam boiler having bent tubes connected to and in cominunication at
their upper and lower ends with the inner sides of inclined water boxes which have tubes
passing through them through which the products of combustion from the fire box
escape into the flue F and thence to the chimney G, the upper ends of these water
boxes being in communication with a steam and water chamber, substantially as
described with reference to the accompanying drawings.
2. In tubeless steam boilers the peculiar arrangement and combination of parts,
substantially as herein shown and described.
Dated June 26th 1807
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.