IMPROVEMENTS IN VENTILATING MANUFACTORIES AND OTHER PLACES, IN HEATING AND COOLING ATMOSPHERIC AIR, AND IN APPARATUS FOR THE PURPOSE
Year: 1879

page_text: LETTERS PATENT to Henry Lacy, of Manchester, in the County of Lancaster,
for the Invention of "IMPROVEMENTS IN VENTILATING MANUFACTORIES AND
OTHER PLACES, IN HEATING AND COOLING ATMOSPHERIC AIR, AND IN
APPARATUS FOR THE PURPOSE."
Sealed the 4th July 1879, and dated the 8th January 1879.
PROVISIONAL SPECIFICATION left by the said Henry Lacy at the Office of
"IMPROVEMENTS IN
the Commissioners of Patents on the 8th January 1879.
HENRY LACY, of Manchester, in the County of Lancaster.
VENTILATING MANUFACTORIES AND OTHER PLACES, IN HEATING AND COOLING
ATMOSPHERIC AIR, AND IN APPARATUS FOR THE PURPOSE."
This Invention relates to improvements upon an Invention for which Letters
Patent were granted to John Henry Johnson on July 8th, 1872, No. 2054, and
consist in applying the perforated plate mentioned in the Specification of such
Letters Patent at or about the centre of a chamber so as to divide the same into
two compartments. In each of these compartments I arrange a coil of pipes,
through which in the summer time I circulate cold water and in the winter steam
or hot air.
By means of a fan and suitable trunk or other equivalent apparatus I draw the
air at will either from the outer atmosphere or from a boiler house furnace or other
heating medium, and pass the same into the lower compartment of the chamber
hereinbefore mentioned and in contact with the coil therein contained, from whence
the same passes through the perforated plate, upon which a film of hot or cold water
is maintained, into the upper compartment and in contact with its coil, and finally
escapes through suitable pipes or passages to the various rooms or parts of the
manufactory or other place requiring ventilation. It will be readily apparent that
either cold water or steam may be passed through the coils, according as to whether
it is desired to cool or heat the air passing through the apparatus. And in order to
spread the air as it issues from the various outlets from my improved apparatus, and
to prevent a draft, I apply improved revolving heads to such outlets, each of which
is provided with angular vanes affixed to the underside of the head at a suitable
angle to catch the issuing current, and whereby such head is caused to revolvo.
This improved head is also suitable for other ventilating or exhausting purposes.
The pipes I prefer to use for conveying the air are constructed of galvanized
sheet iron, with flanges and joints soldered and made air and water tight.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Lacy in the Great Seal Patent Office on the 8th July
1879.
HENRY LACY, of Manchester, in the County of Lancaster. "IMPROVEMENTS IN
VENTILATING MANUFACTORIES AND OTHER PLACES, IN HEATING AND COOLING
ATMOSPHERIC AIR, AND IN APPARATUS FOR THE PURPOSE."
This Invention relates to improvements upon an Invention for which Letters
Patent were granted to John Henry Johnson on July 8th, 1872, No. 2054, and
consist in applying the perforated plate mentioned in the Specification of such
Letters Patent at or about the centre of a chamber so as to divide the samo into
two compartments. In each of these compartments I arrange a coil of pipes,
through which in the summer time I circulate cold water and in the winter steam
or hot nir.
By means of a fan and suitable trunk or other equivalent apparatus I draw the
air at will either from the outer atmosphere or from a boiler bouse, furnace, or other
heated apartment, and pass the same into the lower compartment of the chamber
hereinbefore mentioned and in contact with the coil therein contained, from whence
the same passes through the perforated plate, upon which a film of hot or cold water
is maintained, into the upper compartment and in contact with its coil, and finally
escapes through suitable pipes or passages to the various rooms or parts of the
manufactory or other placo requiring ventilation. It will be readily apparent that
either cold water or steam may be passed through the coils according as to whether
it is desired to cool or heat the air passing through the apparatus. And in order
to spread the air as it issues from the various outlets from my improved apparatus,
and to prevent a draft, I apply improved revolving heads to such outlets, each of
which is provided with angular vanes affixed to the underside of the head at a
suitable angle to catch the issuing current, and whereby such head is caused to
revolve. This improved head is also suitable for other ventilating or exhausting
purposes.
The pipes I prefer to use for conveying the air are constructed of galvanized
sheet iron, with flanges and joints soldered and made air and water tight.
And in order that this my said Invention may be the more readily understood
and carried into practical effect, I have hereunto annexed a Drawing illustrative of
my improved apparatus, and will now proceed to describe the same, reference being
had to the figures and letters of reference marked thereon.
Fig. 1 is a side view partly in section of my improved ventilating apparatus or
apparatus for heating, cooling, and humidifying or moistening atmospheric air.
Fig. 2 is a sectional plan and Fig. 3 a transverse section, both of Fig. 1. In all the
views A is a chamber, which is most conveniently constructed of sheet metal,
although other suitable material might be employed; B is a perforated plate situated
at or about the centre of the chamber, and dividing the same into an upper and
lower compartiment. In each of these compartments I apply a coil of pipes, the
lower coil C being arranged by preference in a sloping direction, and communicating
through the branch pipe C with the upper coil C, which is arranged horizontally.
Through these coils I paes or circulate cold water if I desire to use the same as a
cooling medium, or hot water, steam, or hot air if as a beating medium, the water
entering the coil through the cock W and the steam or hot air through the cock S,
the outlet pipe X allowing the overflow water to escape through the steam trap D.
It will be observed that the plate B has a slight fall in one direction, as illustrated,
60 that the water which is introduced into the trough B' through the cock W¹ and
perforated pipe B will have a tendency to flow along the upper surface of the
perforated plate towards the trough B³, and from whence any overplus escapes

page_text: through the pipe B'. If it be desired to heat the water flowing over the perforated
plato I arrange to introduce steam along with the water entering through the
perforated pipe B' by having a steam supply in connection with the cock S', which
opens into the same perforated pipe.
The action of this improved apparatus is as follows:-
By means of the fan E or other equivalent apparatus I draw a supply of atmo-
spheric air at will either from the outer atmosphere through the trunk F, or from a
boiler house, furnace, or other heated apartment through the branch pipe G, and
pass the same through the pipe H into the lower compartment of the chamber A,
and in contact with the coil C, from whence such supply of air passes through the
perforated plate B (and through the film of water lying upon the same, whereby
it is rendered moist and humid) into the upper compartment and in contact with the
coil C, and finally escapes through the outlet pipe I to the various rooms or parts
of the mill, manufactory, or other place requiring ventilation. And in order to
spread the air as it issues from the various outlets I leading from my improved
apparatus, and to prevent a draught, I apply improved revolving heads to such
outlets as illustrated on an enlarged scale in Fig. 4, and which head is also suitable
for other ventilating or exhausting purposes. This revolving head consists of a
series of angular vanes a affixed to the under side of the cap b at a suitable angle
to catch the issuing current from the pipe I, and whereby such head is caused to
revolve.
The pipes I prefer to employ for the purposes of this Invention are constructed
of galvanized sheet iron, as seen in Fig. 4 and in plan in Fig. 5, each length of
which is fitted with flanges c soldered on to the pipes, and between which flanges
india rubber rings are introduced to secure a perfectly tight joint.
In Fig. 6 I illustrato a modification of my Invention in which the perforated plate B
is substituted by a perforated spray pipe d, by preference passing round the apparatus,
and which is situated above the coils e and f, the perforated plate g being intro-
duced as illustrated to prevent any particles of water escaping with the issuing
current of air.
It will thus be observed that this Invention affords a means of heating or cooling
atmospheric air and of introducing heated, cold, or moist air into the various parts
of a mill, manufactory, or other place requiring ventilation, in such a manner as to
avoid draughts and yet to give an ample supply of air in a moistened, heated, or
cooled state, as required.
Having thus particularly described and ascertained the nature of this my said
Invention, together with the best methods with which I am acquainted for carrying
the same into practical effect, I wish it to be understood that I make no distinct
claim to the perforated plate B, over which a supply of water is maintained, and
through which the supply of air is passed, as the same has already formed the
subject matter of Letters Patent granted to J. H. Johnson, on the 8th day of July
1872, No. 2054, as aforesaid, nor do I confine myself to the precise details, relative
proportions, or dimensions of the various parts of the apparatus herein before
described, and illustrated on the accompanying Drawing, as the same may be con-
siderably varied without departing from the Invention, but what
claim is,-
1st. The general combination and arrangement of apparatus consisting of the inlet
trunk F, fan or its equivalent E, and chamber A, when internally divided and fitted
and provided with outlet pipes I, substantially as and for the purposes described,
and illustrated on the accompanying Drawing.
2nd. The chamber A when provided with a perforated plate B or its equivalent
with a coil or coils of pipe C, through which the heating or cooling medium is
passed, and fitted with one or more outlet pipes I for conveying the heated, cooled,
or humid air, substantially as bereinbefore described, and illustrated on the accom-
panying Drawing.
3rd. The revolving and distributing head fitted with angular vanes, substantially
as and for the purposes described.

page_text: 4th. The improved pipe joint, substantially as and for the purposes hereinbefore
described.
In witness whereof, I, the said Henry Lacy, have hereunto set my hand and
seal, this Seventh day of July, in the year of our Lord One thousand eight
hundred and seventy nine.
HENRY LACY. (LS)