Improvements in Ventilators for House Drains and the like.
Year: 1891

page_text: Date of Application. 28th Feb., 1891
Complete Specification Left, 30th Nov., 1891-Accepted, 2nd Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Ventilators for House Drains and the like.
I, THOMAS BROWN of 13, Armadale Road, Fulham, London, S.W. Builder
and House Decorator do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in apparatus for ventilating drain pipes
and is principally applicable to dwelling houses and similar structures.
The invention consists in surmounting the top of the ventilating pipe in ordinary
use with a square box or chamber open on the side exposed to the atmosphere. To
the upper and inner edge of this opening is hinged a door or "flap-valve" of mica
or other light and durable substance which will readily yield to permit the air
to enter the pipe, and closing by its own weight will prevent any return
draught.
Around the exposed side of the chamber above described I fix a series of
deflecting plates arranged on the louvre principle and consisting of short truncated
cones fixed one within the other and leaving air passage so that currents striking
the plates laterally or upwards or downwards will be deflected towards the face of
the chamber thus securing a more constant admission of air than if only a plain or
funnel shaped opening were provided.
Dated thic
day of
•HUGHES, ELI & HUGHES,
76, Chancery Lane, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Ventilators for House Drains and the like.
I, THOMAS BROWN, of 13, Armadale Road, Fulham, London, S.W. Builder and
House Decorator 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 certain improvements in apparatus for ventilating
drain pipes and is principally applicable to dwelling houses and similar structures.
The invention consists in surmounting the top of the ventilating pipe in
ordinary use with a box or chamber open on one side where it is exposed to
the atmosphere.
To the upper and inner edge of this opening is hinged a door or "flap-valve" of
mica or other light but durable substance which will readily yield upon its hinge to
permit the air to enter the box and pipe and closing by its own weight will prevent
any return draught.
At the exposed side of the box and around the same I fix a series of deflecting
plates arranged on the louvre principle and consisting of short truncated cones
fixed one within the other but leaving intermediate air passages so that currents of
air impinging upon the plates laterally or in upward or downward direction will be
deflected towards the open face of the box thus securing a more constant admission
of air than if only a plain or funnel shaped opening were provided.
In the drawings annexed hereto a construction of this ventilating device is shown
whereof
Fig. 1 is a front view of the open side of the louvres and box.
homing the fiction of the norte

page_text: a is the box. a' a neck on the underside thereof fitting the pipe to which it
has to be applied. a² is an ear having a piercing for an attaching nail which
will be driven into the wall against which the pipe will have been laid or led
up. . are the louvre plates, arranged in squares as shown, but these might be
arranged in circular form. a3 are pierced ears whereby the louvre deflecting plates
may be attached by rivets, are tie pieces connecting and supporting the
louvres in relation to each other. a is a grating over the opening of the box
chamber a.
c represents the hinged flap or screen arranged to cover the opening
of the box a which screen will be acted upon by the incoming currents
of air.
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.
The improvements in ventilators for house drains and the like having the louvre
plates and hinged flap e in combination with the chamber a a' constructed and
operating as and for the purpose herein specified.
Dated this 30th day of November 1891.
HUGHES, ELI & HUGHES,
76, Chancery Lane, W.C., Agents for the Applicant.