appar
Year: 1887

page_text: 1, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex 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 relates to improvements in ventilating apparatus chiefly designed for
removing smoke or steam from rooms or other compartments, and for removing
obnoxious gases from school rooms, churches, theatres and halls.
.
The said invention consists essentially in a novel ventilating device, and its
attachment to stoves for ventilating rooms from which smoke and steam are to be
removed and which but few persons occupy and in the combination of two or more
of such ventilating devices with a surrounding case in such a manner that the heavier
gases are taken up both through the ventilators and between them.
In the accompanying drawing
Figure 1 is an elevation partly in section of the rear side of the improved ventilator.
Figure 2 is a transverse vertical sectional elevation of the same on the line z
Figure 1, and shewing it connected with a stove and a stove pipe.
Figure 3 is a section on the line y Figure 2 showing both the lower head and the
sheet metal connection hereinafter described.
Figure 4 is an underside view of the top head to the ventilator removed from the
sheet metal connection. This figure if turned hottom side up and cut vertically
through on the line will coincide with the upper head, Figure 1.
Figure 5 is a front elevation, with the front plate removed, of a ventilating case
in which are placed two of the improved ventilators for removing the air from
compartments.
Figure 6 is a horizontal section of Figure 5 on the line x.
Figure 7 shews in elevation a sliding door and register which have been removed
from Figure 5 and also a portion of the front plate of the ventilating case.
The ventilator shewn in Figures 1, 2 3 and 4 comprises two heads a, a¹. Each head
comprises three portions A, B, C the part A is substantially an elliptical ring or collar
and the part C is integral with the part A being connected therewith by means of a
connecting plate B, and forming a flange on the said plate. The flange C does not
extend quite to the collar A, a space w intervening to permit a sheet metal casing D
ст

page_text: to pass onto the collar A. G is a sheet metal covering, which is secured to the part D
at Figure 3 by rivets or a double lock joint and forms a chamber or passage S.
An induction air port E is formed in the top portion of the passage S and an
induction port I leads from the passage S to the chamber or passage W within the
casing D. The chambers or passages W, S being heated by the stove F, a strong
draught is caused and smoke and foul gases are drawn in at E and thence down
through the passage S whence they pass into the passage W and thence to the flue V.
The advantage of the cast heads a, a is that when hot they hold the heat and maintain
an equilibrium to a large extent, and that at the same time the plate B and flange C
form a part of the passage S.
The ventilators shown in Figures 5 and 6 have the same construction as that shown
in Figures 1, 283 and 4 with the addition of pipes H, H' connecting with the induction
ports E. As shown the pipe H extends down nearly to the floor K, and the pipe H¹
extends through the floor and serves to remove foul gases which are below the floor,
and it may lead to a urinal, closet or sewer pipe. This modified form of apparatus
has also its lower ends closed as shown at R, R, and gas jeis J for producing heat
instead of the stove F.
As shown in Figure 1, two ventilators are enclosed in a case which comprises the
back L, the ends M, M, and the front plate N. The case also comprises the sliding
draught regulating door running in guides or ways P, the register Q and the
pipes S', T.
The advantage of using two ventilators in a case is that they will each take up the
same amount of foul air as though operated singly, and the heated air therefrom passing
up nearly in the lines will converge at Sand thereby continue the rarefication to
such an extent that a large amount of foul air will be drawn up between the ventilators,
in the direction indicated by the arrows p, p, p, and carried out of the compartment.
An experimental test of the device shown at Figure 1, with the consumption of
twelve feet of gas per hour, changed the air in a compartment twenty feet by twenty
and fifteen feet high four times per hour when the compartiment was occupied to its
fullest capacity by school children.
The apparatus shown in Figures 5, 6 and 7 can be placed in any compartment
where the pipe T can be run to a flue or chimney, or where there is a stove; and the
ventilator shown in Figures 1, 2, 3 and 4 may be used without a stove if the lower
head is provided with a bottom gas, or a lamp being employed as a heater.
ŏ
Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, as communicated to me by my
foreign correspondents, I declare that what I claim is:-
:-
First. The ventilator comprising the heads a, a' constructed as specified, in combi-
nation with the passage W, formed by the parts A of the heads, and the sheet metal
easing D, and the passage S formed by the plates B and the flanges C of the heads
and the sheet metal casings D and G; the passage S being provided with the induction
port E and with the passage I leading from the passage to the passage W, the said
ventilator being operated by heat from a stove, gas-jet, or lamp, as specified.
Second. The combination of two ventilators each comprising the passages S, W,
formed by the heads a, a, and the sheet metal casings D, G, with the case comprising
the back plate L, the end plates M and the front plate N contracted at their top portions
to connect with the pipes S T and a suitable door or draught regulator O, and gas
jets J, J, as specified.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.