Improvements in Ventilators.
Year: 1891

page_text: Date of Application, 22nd July, 1891
Complete Specification Left, 22nd Apr., 1892-Accepted, 28th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in Ventilators.
I RICHARD ROBERT LOANE ROSOMAN, of Highlands, Itchen Ferry,
Southampton, in the County of Hampshire, Gentleman, do hereby declare the
nature of this invention to be as follows:-
My invention relates to ventilators.
The main object of my said invention is to provide a simple, and effective
ventilator for ventilating railway carriages and for all similar purposes.
In making a ventilator according to one form or modification of my invention
the same consists of a box or device-approximately boat shaped in plan-closed
at the top and also at the bottom save for a suitable sized air outlet or up-cast
opening in the latter part.
In the vertical sides about midway of the length an opening is provided say in
length about one fourth of that of the ventilator, more or less as desired, the
opening extending from the top to the bottom of same.
Within the chamber thus made another is fitted of similar shape but smaller
whereby a parallel-or approximately parallel—space is formed between the sides
or walls of the two chambers.
The inner chamber is divided into two equal lengths by a vertical diaphragm
fitted at the centre of the upcast opening, herein before referred to, and the ends
of this chamber are left open the size of each opening being about equal in area to
half that of the upcast opening.
The sides of the inner chamber project slightly beyond the openings provided
in the sides of the outer chamber.
A flange corresponding to the size of the upcast opening projects below the
bottom of ventilator to a depth about equal to the thickness of the roof of carriage
or top of the compartment it is desired to ventilate, and to prevent the entrance of
water at the upcast opening this flange may stand above the bottom of the
ventilator.
By means of the arrangement and form of ventilators constructed according to
iny invention, it is considered that when they are fitted to say, the roof of a
railway carriage and the latter is in rapid motion, the foul or heated air will be
sucked or drawn from the space formed between the inner and outer chamber
(hereinbefore referred to) and consequently from the compartment, by reason of
the force with which the outer air impinges against the openings provided in the
sides of the outer chamber.
The ventilator as hereinbefore described is made two-ended that is of
corresponding shape-being pointed--at each end and whatever direction the
carriage or compartment to which it is fitted-is moving the ventilator acts
similarly and it is noted, only one end (or half) at a time acts an upcast
ventilator.
as
My ventilator may be of circular or any desired form although in other respects
similarly constructed and arranged as hereinbefore described.
Dated this 21st day of July 1891.

page_text: COMPLETE SPECIFICATION.
Improvements in Ventilators.
I RICHARD ROBERT LOANE ROSOMAN, of Highlands, Itchen Ferry,
Southampton, in the County of Hampshire, Gentleman, 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 :—
My invention relates to ventilators.
The main object of my invention is to provide a simple and effective ventilator
for ventilating railway carriages, and for all similar purposes.
In the accompanying drawing
Fig. 1, is a side elevation of one form of my improved ventilators, and
Fig. 2, a sectional plan taken on line G. H.
Fig. 3, a cross sectional elevation on line A, B, taken at right angles to Fig. 1.
Fig. 4, a side elevation, and
Fig. 5, a sectional plan taken on line J, K, and
Fig. 6, a cross sectional elevation on line C, D, taken at right angles to Fig. 4,
of another form or modification of my improved ventilators.
Similar letters of reference indicate corresponding parts in all the figures.
In the form of my ventilator as shewn by Figs. 1, 2, and 3, e, is a base plate
made of any suitable material. In this plate 1 provide an opening f, which forms
the air outlet or upcast opening from the compartment to which the ventilator is
fitted, upon the base plate I erect a chamber; 9, 9, being the vertical sides or
walls of same, and g', the top of the ventilator, openings g³, 93, are provided in the
vertical sides of this chamber extending from the base plate to the top g', of the
ventilator, within this chamber another, smaller, one is formed; h, h, representing
the vertical sides of same which extend from the base plate to the top g¹, of
ventilator; a space h³, h¹, is thus formed between the sides or walls of the two
chambers; the inner chamber and the opening f, is divided into two equal lengths
by a vertical diaphragm E, and the ends i, i, of the inner chamber are left open.
The sides of the inner chamber at 1, are arranged to project beyond the
extremities of the openings g³, g³, provided in the sides of the outer chamber.
A flange j, corresponding to the size of the upcast opening projects below the
bottom of ventilator to a depth about equal to the thickness of the roof of carriage,
or top of the compartment, it is desired to ventilate, and to prevent the entrance
of water at the upcast opening this flange may stand somewhat above the base
plate e, of the ventilator.
The ventilator thus described is made two-ended, that is the ends are of
corresponding pointed shape and in whatever direction the carriage or compartment
to which it is fitted-is moving the ventilator acts similarly and it is noted only
one end or half at a time, of the ventilator, acts as an upcast ventilator.
In the modified form of my ventilator, as shewn by Figs. 4, 5, and 6, the sides g³,
of the outer chamber are of circular form, as are also the sides h³, of the inner
chamber except the part 4, which projects into and somewhat beyond the
openings g, provided in the sides or walls of the outer chamber, ventilators of this
type are shorter than those hereinbefore described-with reference to Figs. 1, 2,
and 3-thus they can be fitted in a smaller space, in other respects-than those
mentioned the design and arrangement of the parts of both types of ventilators
is almost exactly similar, as will be seen upon reference to the accompanying
drawing.
By means of the arrangement and form of ventilators constructed according to
my invention it is considered that when they are fitted to say the roof of a railway
carriage and the latter is in rapid motion in the direction indicated by the arrows c,
the foul or heated air will be sucked or drawn from the space ', between the
walls of the inner and outer chambers, and consequently from the compartment, at

page_text: the opening in the direction indicated by the small arrows- -by reason of the
force with which the outer air impinges against the ventilator in the direction
indicated by the arrows y, y, at the openings g³, and 9*, respectively, provided in
the sides of the outer chamber, and presuming the carriage is moving in the
opposite direction to that indicated, the like result is obtained.
Ventilators made according to my invention are never the medium of supply
of air to a compartment they only act as exhaust or upcast ventilators-sucking
or drawing air from a compartment, to which they are fitted, when the latter is in
motion as there is no direct communication by means of the ventilator between
the outer air and the compartment.
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 improved ventilators consisting of the parts constructed, arranged, and
fitted substantially as hereinbefore described, and illustrated in the accompanying
drawings.
1
་་ 1005
HERBERT P. BLAKE, M.I.N.A.,
70, High Street, Southampton, Agent for the Applicant.