A Method of Ventilating Railway Tunnels, and Apparatus for that purpose.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
A Method of Ventilating Railway Tunnels, and Apparatus for that
purpose.
I, EDWARD EUGENE DULIER, of Clarence House, Richmond, in the County of
Surrey, Retired Military Officer, do hereby declare the nature of this invention
to be as follows:
My invention relates to the ventilation of railway tunnels, especially applicable
to tunnels of great length as in the case of underground railways.
For this purpose I fix, some distance under the crown of the arch a floor having
along it, in the case of a single line, a continuous slot, into which the chimney of
a locomotive can freely project, or in the case of a double line, two such slots.
There is then formed in the roof of the tunnel a continuous chamber, extending
from station to station into which the locomotives deliver their smoke, combustion
gases and steam, and from which at convenient places these are drawn off by draught
created by fans chimneys steam ejectors or otherwise. For drawing off the smoke,
steam and gases, I prefer to employ apparatus such as is described in my
Specification No. 17,779 of 1893 or No. 16,822 of 1896, as these apparatus serve
not only to produce draught but also to cause deposit of impurities.
Dated this 30th day of April 1897.
ABEL & IMRAY,
Agents for the Applicant.
A Method of Ventilating Railway Tunnels, and Apparatus for that
purpose.
I, EDWARD EUGENE DULIER, of Clarence House, Richmond, in the County of
Surrey, Retired Military Officer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement: -
My invention relates to the ventilation of railway tunnels, especially applicable
to tunnels of great length as in the case of underground railways.
For this purpose, as shewn in section in the accompanying drawing, I fix, some
distance under the crown of the arch a floor A having along it, in the case of a
single line, a continuous slot, into which the chimney of a locomotive can freely
project, or in the case of a double line, as shewn, two such slots S. There is thus
formed in the roof of the tunnel a continuous chamber, extending from station to
station into which the locomotives deliver their smoke, combustion gases and
steam, and from which, by channels C, at convenient places, these are drawn off
[Price 8d1

page_text: by draught created by fans, chimneys, steam ejectors or otherwise. For drawing
off the smoke, steam and gases, I prefer to employ apparatus such as is described
in my Specification No. 17,779 of 1893 or No. 16,822 of 1896, as these apparatus
serve not only to produce draught but also to cause deposit of impurities. In the
drawing I have indicated apparatus such as is described in the Specification
No. 17,779 of 1893 consisting of an inverted U passage B having an upwardly
directed jet of steam in the ascending limb and a shower of water in the descend-
ing limb, from the base of which the gases, comparatively cleared from smoke
ascend by a chimney D.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. The herein described method of ventilating a railway tunnel by providing near
the crown of the arch a floor slotted for passage of the locomotive chimneys, and
from the continuous chamber, thus formed drawing the smoke steam and gases by
fan or chimney or other draught.
2. For ventilating a railway tunnel, apparatus constructed and operating
substantially as described.
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037
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17 T
2000