Improvements in High Pressure Steam Heating Apparatus.
Year: 1897

page_text: Date of Application, 13th Mar., 1897
Complete Specification Left, 11th Dec., 1897-Accepted, 15th Jan., 1898
PROVISIONAL SPECIFICATION.
Improvements in High Pressure Steam Heating Apparatus.
I, WILLIAM LITLER BRADFORD, of the Crescent Iron Works, Salford, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention is especially applicable to high pressure steam coil heaters used
for heating air or for other purposes, where the condensation of the steam is very
considerable, and the invention relates especially to such heaters as are made of
a steam chest or series of chests horizontally arranged and provided with a number
of upright tubes forming the "coil" rising up from the same and open at one
or both ends thereto.
It is found that the water of condensation, especially where it is rapidly formed
in the tubes, is liable to choke them, the action of the steam actually preventing
the descent of the water into the steam chests.
According to my invention I make the steam chest or chests to stand vertically
or nearly so, and I divide each chest at the centre by a midfeather into two com-
partments or chambers, and one end of each pipe forming the "coil" is open to
the upper chamber and the other end is open to the lower chamber, the pipes
projecting in a horizontal direction from the side of the chest. The steam is
admitted to the upper chamber, and the water of condensation escapes at the
bottom of the lower chamber.
The midfeather is preferably sloped from one side to the other, and the upper
end of one of the central pipes opens into the lowest part of the upper chamber,
the bottom of which is thus inclined to such opening.
Thus it will be seen that the tubes of the "coil" can still expand freely, and
that the steam will assist the water of condensation to escape from the said tubes.
Dated thin 19th dow of March 1807
Improvements in High Pressure Steam Heating Apparatus.
J., WILLIAM LITLER BRADFORD, of the Crescent Iron Works, Salford, in the
County of Lancaster, 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:-
This invention is especially applicable to high pressure steam coil heaters used
for heating air or for other purposes, where the condensation of the steam is very

page_text: considerable, and the invention relates especially to such heaters as are made of
a steam chest or series of chests horizontally arranged and provided with a number
of upright tubes forming the “coil" rising up from the same and open at one
or both ends thereto.
It is found that the water of condensation, especially where it is rapidly formed a
in the tubes, is liable to choke them, the action of the steam actually preventing
the descent of the water into the steam chests.
My invention will be readily understood on reference to the accompanying draw-
ings on which Fig. 1 is a front elevation, and Fig. 2 a sectional elevation of a
steam heating apparatus constructed according to my invention.
I make the steam chest or chests to stand vertically or nearly so (see Fig. 1)
and I divide each chest at the centre by a midfeather or division plate shewn
dotted at a into two compartments or chambers a a¹, and one end of each pipe b
forming the "coil" is open to the upper chamber a and the other end is open to
the lower chamber a', the pipes projecting in a horizontal direction from the side
of the chest, as seen at Fig. 1. A few of the pipes may be single as seen at b¹
and communicate with the lower chamber only. The steam is admitted at
the upper chamber and the water of condensation escapes at the bottom of the
C to
a,
lower chamber a¹ at d.
The midfeather or division plate a is preferably sloped as shown from one side
to the other, and the upper end of one of the central pipes opens into the lowest
part of the upper chamber a, the bottom a of which is thus inclined to such
opening.
Thus it will be seen that the tubes of the "coil" can still expand freely, and
that the steam will assist the water of condensation to escape from the said tubes.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:-
In a steam heating apparatus the combination with vertical steam chest having
steam inlet at top and escape for condensed water at bottom, of a midfeather or
division plate dividing the chest into two chambers, and bent tubes each connected
to both chambers, substantially as and for the purposes herein before described.
Dated this 10th day of December 1897.
GEO. DAVIES & SON,
Agents for the Applicant, 4 St. Ann's Square, Manchester.