provements in Ventilators
Year: 1895

page_text: PROVISIONAI SPECIFICATION
Improvements in Ventilators
I JOSFPH MULI ICAN of No 32 Eyre Street Sheffield, Ventilator Manufacturer
do hereby declare the nature of this invention to be as follows
-
It relates to caps or ventilators and the air shaft or shafts in connection therewith
for use on hips' hulls, 100fs of buildings, and all other erections or things through
which it is desi able to maintain a current of air, and the protection of such caps
or ventilators from the ingress of rain, spray or waves
To obtain these results I use a cap of cylindrical, argula or other general shape,
with openings in the same for the egress of air, such openings to be surrounded (with
a space between) by walls or deflecting plates, which shall also form the walls of
the divided a-shaft hereinafter mentioned
The vertical ur shaft in connection with the cap, shall be divided at a point
below the cap into two or more branches, which being continued in a curve or
curves, or in angles so as to meet at a point above the cap shall form a continuous
the сгр
air passage or passages around the cap and connected with the same,
shall
be connected, in an inverted position, with the continuous air passage or passages, at
the underside of the highest or upper pait of such passige or passages
Dated this 29th day of April 189ə
JOSEPH MULLIGAN,
Applicant
JOSEPH MULLIGAN, of 32 Eyre Street, in the City of Sheffield, Ventilator
Manufacturer, 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
Mylinvention relates to caps or ventilators for use on board ship, roofs of buildings,
railway carriages and the like in which it is desirable to secure ventilation
Its principal object is to prevent, under all ordinary conditions, the admission of
water to the air shafts, also to secure a more steady and continuous action
To obtain these results in a ventilator adapted for use on board ship or on a
railway, I use a cap of cylindrical, angular, or any general shape with openings in
the same for the egress of vitiated, and surround such openings (leaving a spice
between) by two or more air shafts formed by continuing the principal air shaft
right round and over the top of the exit cap or branch, which said cap or bianch
I fix in an inverted position with the continuous air passage or passages, and on
the underside of the upper part of such passage or passages, so that the vitiated air
leaves the air shaft downwards into the deflectors formed by aforesaid branch air
shafts and by the cap or exit branch itself, the air currents so set up then expelling
the vitiated air as is well understood

page_text: The accompanying drawings illustrate arrangements suitable for applying the
aforesaid improvements to ventilators, in which
Figure 1, is a front elevation of a ventilator with deflector caps
vertical section of same upon the line ST
Figure 2, a
Figure 3, is an horizontal section on line U V, both lines in Fig 1
Figure 4, is a front elevation of a ventilator wherein the exit branch is continued
downward and 14 complete without special caps
Figure 5, is an horizontal section on line Y 4, of Fig 4
The principal air shaft, A, is not allowed to deliver direct into the annular space
formed by the deflectors, d, e, but is divided into two or more branches, b, b, the
said bianches being continued right round and united at the top, whereby they also
operate as deflectors of the outside an currents, in the underside of the junction
of branch an shafts, I make and fix an outlet branch, c, from which the vitiated air
may pass into the deflectors, d, and escape by the side openings therein provided,
or as shown in Figures 4 and 5, the branch, c, may be carried further downward,
and by similar openings in its sides discharge the vitiated air into the annular space
as before
It will be seen that in either arrangement the exit is made at the highest possible
point and by being inverted renders it impossible for any water to enter the air
shafts or to interrupt the outward flow of vitiated an until and unless the whole
appuiatus is immersed in a body of water to or above the level of the said inverted
outlet
I would also have it understood that I do not rely upon or confine inyself to the
shape or configuration herein shown for the several parts as the same may be varied
in outline or design to suit position or requirements without in any way departing
from the spirit of my invention
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
-
1 The continuation of an shafts or passages to the top of ventilators, with
inverted branch on branches for delivering vitiated air within an annular space, the
whole forming a watertight apparatus as described and illustrated, Figures 1, 2, & 3
2 In ventilators the application of a central delivery tube connected inversely
to the principal air shaft and having side openings so placed that the body of such
tube operates in combination with the walls of the surrounding air shafts in
producing a curient and tendency to exhaust the vitiated air from such tube and
air shafts, substantially as descubed and illustrated by Figures 4 and 5 of drawings
annexed
Dated this 19th day of December 1895
ISAAC BECK,
Agent for the Applicant