Improvements in Ventilating Apparatus.
Year: 1894

page_text: Date of Application, 26th June, 1894
Complete Specification Left, 26th Mar., 1895-Accepted, 26th June, 1895
Improvements in Ventilating Apparatus.
We, JAMES EVANS, Manufacturer, CHARLES HARRIS, Manager, and THOMAS
FRANCIS EVANS, Undermanager all of Brittannia Works Cross Street, Blackfriars
Street, Manchester, in the County of Lancaster do hereby declare the nature of
this invention to be as follows:-
It consists of certain improved apparatus for producing a forced draught in the
windsails or other ventilating shafts or trunks in steamers, hospitals and the like
by means of a jet of compressed air or steam and more or less cooling or damping
the air in the process.
It consists firstly of a cylindrical air chamber of suitable size within which is
placed a coil of pipe ending in a suitable nozzle or aperture through which coil the
jet of steam or compressed air is driven.
Surrounding the outside of the chamber is another coil of pipe terminated by an
inlet into the interior of the chamber, through which is passed when a steam jet
is used, hot air from the stokehole or other place, or when compressed air is used,
cold water, the effect being to preserve the heat of the steam and prevent con-
densation, in the one case, and to cool the air supply in the other.
The nozzle end of the steam or compressed air coil, is fitted into the smallest of
a series of concentric rings arranged in a coneshaped form, a suitable annular space
being left between each ring to admit of air being drawn in by the draught caused
by the jet, the whole terminating in a suitable shaft or trunk by which the cool
draught is conveyed to wherever desired.
This apparatus is placed within the windsail or ventilating shaft, in which the
forced draught is required, fittings or adjuncts being added as required to suit each
case.
Deoderisers, disinfectants, or perfumes can be readily mingled with the draught
if desired.
Improvements in Ventilating Apparatus.
We, JAMES EVANS, Manufacturer, CHARLES HARRIS, Manager, and THOMAS
FRANCIS EVANS, Undermanager, all of Brittannia Works, Cross Street, Black-
friars Street, Manchester, in the County of Lancaster, 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 :-
It consists of certain improved apparatus for producing a forced draught in the
windsails, or other ventilating shafts or trunks in steamers, vessels, hospitals, and
the like, by means of a jet of compressed air or steam, or air and steam combined,
and more or less cooling or damping the air in the process.

page_text: It consists firstly of a cylindrical air chamber of suitable size within which is
placed a coil of pipe ending in a suitable improved nozzle or aperture, through
which coil the jet of steain or compressed air passes.
Surrounding the outside of the chamber is another coil of pipe terminating by
an inlet into the interior of the chamber, through which is passed when a steam jet
is used, hot air from the stokehole or other place, or when compressed air is usel,
cold water, the effect being to preserve the heat of the steam and prevent con-
densation, in the one case, and to cool the air supply in the other.
In a modification of the foregoing, we use a suitable chamber of similar form,
but of modified construction. This modified chamber is encased in a jacket of
suitable numconducting material and is formed at its lower end into a suitable
form or shape to receive a suitable improved nozzle or aperture for the expulsion
of compressed air or steam.
Compressed air or steam is admitted through the side of the modified chamber,
at its lower end by suitable pipes or connections.
At the top of the modified chamber is a suitable valve, by means of which, when
steam is employed, and it is desired to damp the air supplied, a small portion of
steam can be permitted to escape into a suitable cooling coil of pipe encircling
the outside of the modified chamber, allowing the moisture of the cooled steam to
drip into the end of the nozzle or aperture through which the motive jet of steam
is driven. We prefer when this modified chamber is used for a steam jet, to
previously thoroughly dry the steam used by menus of a superheater placed in
the smoke box of the boiler or other suitable place.
The nozzle end of the steam or compressed air chamber, is fitted into the
smallest of a series of concentric rings arranged in a coneshaped form, a suitable
annular space being left between each ring to admit of air being drawn in by the
draught caused by the jet, the whole terminating in a suitable shaft or trunk, or
fitting into the existing air trunk, by which the cool draught is conveyed to
wherever desired.
This apparatus is placed within the windsail or ventilating shaft, in which it is
required to force a draught, fittings or adjuncts being added as required to suit
each case.
In order that the foregoing may be better understood we send herewith seven
sheets of drawings in which :—
Fig. 1. is a side section of the air or steam chamber in its first form and
apparatus.
Fig. 2, a side section of the modified air or steam chamber and apparatus.
Fig. 3, is a cross section of a vessel's windsail showing the manner in which the
motive apparatus is enclosed and placed therein.
Figs. 4 to 8 are five views of the detail of the improved nozzle or outlet.
Figs. 9 and 10 are respectively a longitudinal and cross section of a portion of a
steamer fitted with the apparatus, showing general plan of apparatus.
Fig. 11, is a section of a hospital building showing the manner in which the
apparatus is employed to give motion at the inlet and outlet ventilators.
Figs. 12 and 13 are a plan and cross section of the detail of an inlet ventilator
showing method of moistening air when desired.
C
Referring to Fig. 1a indicates the air chamber, through which a coil of steam pipe 6
is passed, terminating in an improved nozzle or outlet which drives a jet of steam
through the series of concentric rings d drawing in air through the annular
openings d 2, as shown by arrows in drawing.
Surrounding the outside of air chamber a is a coil of pipe e through which,
hot air from the stokehole or other convenient place, or cold water, as it may be
desired, is conveyed to the interior of air chamber a by inlet e 2 for the purposes
already stated.
Referring to Fig. 2 indicates the modifiel chamber consisting of an air or
steam chamber encased in a suitable jacket of nonconducting material and formed
at the lower end to admit of a suitable improved nozzle c, the position of which is

page_text: indicated by dotted lines e 2. Compressed air or steam is admitted at the inlet 12
by means of the openings respectively marked hand i. At the top of the
chamber is a suitable valve j by means of which when it is desired to damp
the air supplied a small portion of steam can be admitted into the cooling coil k
falling when condensed into the nozzle e through the inlet 2.
Referring to Fig. 3, a indicates the air or steam chamber, d the concentric
rings terminating in trunk or shaft d 3, 7 indicates the windsail and 12 the ship's
deck.
Fig. 4 is a front view of the improved nozzle, Fig. 5 a cross section, and Fig. 6
a side view of the same. This improved nozzle consists of a tube m suitably
formed at the outlet end into faces m 2 to admit of two adjustable plates m3 being
fitted thereon by means of suitable adjusting screws n. Separate views of the
plate in 3 and the nozzle with the plates removed are given respectively in Figs. 7
and 8. By means of the adjusting screws the plates m3 can be adjusted to any
nicety, so as to give any desired draught, and are also readily removable for
cleansing or repair.
In Figs. 9 and 10 the position of the windsail is indicated by the letter 1, in
this is contained the air or steam chamber a supplied with compressed air from
the air compressor p by means of pipes / or with steam from the superheater o by
means of pipes h, forcing by means of concentric rings d any requisite current of
air into stokchole r.
Referring to Fig. 11 compressed air is supplied from a compressor p in the
basement and thence conveyed through pipes ii consisting of ordinary gas piping
to the different inlet ventilators s and outlet ventilators all over the building,
suitable nozzles e and (wher recessary) suitable concentric rings d of a more or
less elaborate character fitted at the different inlets and outlets.
In Figs. 12 and shown a jar or receptacle for containing water for
moistening, or disinfectant or other suitable fluid, with a suitable spray tube
which can be turned into position when required, to supply moisture &c., to the
mouth of the nozzle c.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1st. The combined apparatus, consisting of an air or steam chamber, with the
pipes and fittings thereof and a series of concentric rings, substantially as
described hereinbefore and shown in Fig. 1 of the accompanying drawings, for the
purposes set forth.
2nd. The combined apparatus, consisting of a modified air or steam chamber
with the pipes and fittings thereof, and a series of concentric rings, substantially
as described hereinbefore and shown in Fig. 2 of the accompanying drawings for the
purposes set forth.
3rd. The improved nozzle with adjustable plates, for the injection of compressed
air, steam, or gases, substantially as described and shown herein before and in the
accompanying drawings.
4th. The combined apparatus for supplying moisture to a jet of compressed air
or steam, for injection into a hospital or other building, substantially as described
hereinbefore, and shown in Figs. 12 and 13 of the accompanying drawings.
Datad this 95th dor of March 1805
JOHN HENRY TOPHAM,
98A Market Street, Manchester, Agent to Applicants.