VENTILATOR COMBINED WITH GASS BURNER LIT BY INDUCTION COIL
Year: 1885

page_text: DAVID PRENTICE MENZIES 106 Elliot Street Glasgow Coppersmith Ventilator &
Lamp Manufacturer I do hereby declare the nature of my invention for IMPROVED
VENTILATOR COMBINED WITH GASS BURNER LIT BY INDUCTION COIL and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
My Invention has for its object to provide apparatus whereby the ventilation of
dwelling houses or other buildings may be effected by carrying off the impure or
vitiated air.
In carrying out the invention one or more hollow cylinders of metal preferably
of galvanized sheet iron are placed upon the roof or other convenient part of the
building to be ventilated Each cylinder being divided through its centre by two
open slits at right angles to each other their planes being parallel to the axis of
the cylinder.
The sides, or walls, of the slits are made partly of perforated zinc, or other
suitable metal, and partly solid.
The triangular spaces formed by the sides of the slits and the outside of the
cylinder.are open at the bottom to a tube leading into the building to be ventilated.
The wind blowing through the slits induces a current of air through the
perforated sides thereby causing an up current in the tube leading into the
building. At the sides of each slit on the outside of the cylinder are put
triangular pieces projecting outwards so as to direct a strong current of air into
the slits. And inside the slits are placed small triangular pieces to prevent the air
from striking the perforated sides of the slits. When there is no wind blowing a
gas jet is provided at the lower end of the tube leading into the building thereby
causing an up current in the tube. The gas jet to be lighted by an induction coil,
the spark from the coil igniting the gas, the coil being put at any convenient place
all jets on one building being lighted by the same coil.
And in order that my said invention and the manner of performing the same
may be properly understood, I hereunto append a sheet of explanatory drawing to
be hereinafter referred to and representing my improved ventilator.
Figure 1. on the accompanying drawing is an elevation of the ventilator,
figure, 2, is a sectional elevation, and figure, 3, is a sectional plan on the line N on
figure 1

page_text: In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated. The ventilator being fixed on the roof of the
building.
The tube E being put through the roof and open at the inside.
.
A, is the body of the ventilator, B, are triangular pieces fixed, so as to direct a
stronger current of air into the slits D, C are small triangular pieces fitted into the
slits to deflect the currents of air on to the solid plate F, to prevent the currents of
air from striking the perforated sheet G, L, are triangular spaces open at the'"
bottom to the tube E and, also to the slits D through the perforated sheets G, His
a gas jet M a block of suitable material spreading the flame of the gas jet, 1, are
the terminals of wires from an induction coil for lighting the gas jet when required
K is the gas tube leading to jet.
Having thus particularly described my said Invention, and in what manner the
same is to be performed, I proceed to ascertain the distinctive features of novelty
thereof, by declaring that what I claim is
Is the arranging or combining together of parts to form a ventilator substan-
tially in the manner hereinbefore described, and more particularly the arranging,
of the slits at right angles to each other, with perforated sides, of the triangular
pieces to cause a stronger current to pass through the slits deflecting the air away
from the perforated sides, and the arranging of the gas jet to be lighted by the
spark from an induction coil.
Data: 11 1
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