TROVISIONAT DE MOLIATION Improvements in and connected with Stationary Self-acting Exhaust Ventilators.
Year: 1889

page_text: Date of Application, 15th May, 1889
Complete Specification Left, 14th Feb., 1890-Accepted, 15th May, 1890
TROVISIONAT DE MOLIATION
Improvements in and connected with Stationary Self-acting Exhaust
Ventilators.
I, FREDERICK AUGUSTUS MOORE of 1 Comberton Terrace, Mount Pleasant Lane,
Upper Clapton, in the County of Middlesex Consulting Ventilating Engineer, do
hereby declare the nature of this invention to be as follows:-
The object of my invention is to obtain a more direct unimpeded escape for heated
and vitiated air from buildings and apartments, sewers and shafts, ships and railway
carriages, and to prevent downdraught. To obtain this I employ three sets of two or
more perpendicular plates with openings between each plate, the openings in each case
to be opposite the perpendicular plates of next inner set of plates. At the edge of
the inner set of plates I employ a projecting lip. The external air entering the open
space left between the outside plates, is at once deflected away from but past the open
space left between the inner plates, in its passage drawing away the air accumulating
in the central chamber.
COMPLETE
SPECIFICATION.
Improvements in and connected with Stationary Self-acting Exhaust
Ventilators.
FREDERICK AUGUSTUS MOORE of 1 Comberton Terrace, Mount Pleasant Lane,
Upper Clapton, London, Consulting Ventilating and Sanitary Engineer do bereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
The object of my invention is to obtain more efficient ventilation of buildings, flues,
shafts, and any other erection or thing in or through which it is desirable to maintain
a constant current by means of ventilators requiring no mechanical motion and con-
structed in a manner so that the weather cannot possibly enter the upcast shaft
connecting the ventilator with the building or any other erection or thing being
ventilated. To obtain this result I employ three distinct sets of vertical plates-two
sets of these plates having projecting edges hereinafter described, the whole series of
plates being sealed in at top by means of an oval, conical or other approved form of
covering. For the outside of ventilator 1 employ crescent formed vertical plates,
leaving an open space between each, behind these spaces I employ other crescent
formed vertical plates, also leaving an open space between each of these; behind the
open space left between this second series of crescent formed vertical plates, I employ
angular shaped vertical plates with an open space between each; these angular plates
arranged so as to form a square chamber or receiver, such chamber to he in direct
communication with the building or other erection to be ventilated. At the edge of
each plate forming the second series, or inner circle of crescent formed plates I employ
a projecting rim lip or plate, such projecture to form part of the vertical plates or
can form distinct plates, but so fixed as to be near the edge of the vertical plates. By
this arrangement the external air, fog, water and weather coming in contact with the
second series or inner set of crescent formed or circular plates, is at once deflected
away, from and past the open space left between them, thus securing vacuation from the
inner square chamber, downdraught being prevented by the deflexure at edge of
vertical plates, and thro' this deflexure enabling a larger space to be left between the
vertical plates, allowing a freer exit. The edges of the angular plates forming the

page_text: square or central chamber also to be fitted with the deflexure or projecting lip
described above. The use of the plates forming this central square chamber is for the
purpose of preventing downdraught caused by the external air entering the openings
left between the second series of circular plates owing to the rebound of wind when
the ventilator is fixed near a higher building than the one being ventilated-such
rebound of wind instead of being forced down the upcast shaft would be deflected
away from it by means of the projecting rim at edge. Various methods for deflecting
the external air over vertical slits and exit openings are in use but the principle has
been not only to detach these deflectors from main plates but to fix them in the
centre of exit openings, the result being to choke the exit, making a free unimpeded
escape impossible. In order that my said invention may be more clearly understood
I have attached a ground plan shewing the relative positions of the several vertical
plates and the deflecting lips or edges in connection therewith.
The following will explain the plan above referred to.
A. The base of ventilator to which the vertical plates are fixed.
B. The outside plates of ventilator forming the first series of crescent formed or
circular plates.
C. The second series or inner circle of crescent formed vertical plates.
D. The projecting plates, rim, or lip.
E. The angular shaped vertical plates forming the central square chamber or
receiver.
F. The projecting plate, rim, or lip.
G. The upcast shaft connecting building or any other erection or thing to be
ventilated.
H. The exits for the air drawn from the upcast shaft 'G.'
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,
Firstly. The formation of a Stationary Self-acting Exhaust Ventilator having three
distinct series of vertical plates, with a projecting plate, rim or edge at the sides of
each vertical plate of two sets or series.
Secondly. The use of a square chamber next to the upcast shaft, the edges of the
vertical plates forming such chamber fitted with a projecting plate rim, or lip.
Thirdly. The use in every kind of exhaust ventilator, of a projecting plate, rim, or
lip at the edges or sides of guard plates.
Dated this 14th day of February 1890.
FREDERICK AUGUSTUS MOORE,
Applicant.