Year: 1887

page_text: Date of Application, 9th Mar., 1887.
Specification Accepted, 15th Apr., 1887.
I, ROBERT SLADE ASH, of Villa de la Riva in the Principality of Monaco, Dentist,
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, reference being had to the accompanying drawings, and to the letters and
figures marked thereon, that is to say :-
My Invention has for its object an improved ventilating apparatus, particularly for
allowing the introduction of fresh air, the entry of the air being, moreover, determined
naturally or artificially.
My improved ventilating apparatus consists essentially of two metallic dises or
plates, and a number of horizontal slats, or blades carried by and behind one of the
said dises or plates, the whole being arranged and combined in the manner as
hereinafter described.
And in order that my Invention may be readily understood I proceed to describe
the same with reference to the accompanying drawings, in which: Figs. 1 and 2
represent, in transverse section, and in elevation, respectively, my improved ventilating
apparatus, in its circular form, a number of the horizontal slats or blades being removed
in order to clearly shew a portion of the plate or disc behind the same. Figs. 3 and 4
which are like views represent the apparatus in its rectangular form. In all the
figures the same letters of reference indicate similar parts.
A and B are two metallic discs or plates, pierced with any desired number or series
of perforations, orifices, openings, or slots, say for instance, three series of openings E,
E, E, leaving between then solid portions equal to the perforations. The disc or
plate A, is a fixture, and the plate B which is moveable around its axis C, turns in front
of, or over the plate A. Thus it will be readily understood that by causing the
moveable dise or plate B, to turn for a greater or less angle, the section of the
perforations, orifices, openings, or slots, for the introduction of the air, can be varied
from zero up to a maximum, which takes place at the moment that the perforations, &c.,
in the two discs or plates exactly correspond. The fixed dise or plate A, carries, on
the side of the apartment to be ventilated, a series of horizontal slats or blades D,
which present in section the form indicated in figs 1 and 3, and are arranged like the
blades or louvers of a Venetian blind.

page_text: These slats or blades D, have for their object: Ist. To prevent the entry of rain into
the apartment, 2ndly. To form an obstruction to break up and divide the current.
of fresh air entering, so that the air is distributed in every direction, and does not
form a definite and invariable current or draught, and 3rdly. To commence the heating
of the cold air, as these blades or slats, placed inwardly, are themselves maintained at
a certain temperature by the warm air of the room or chamber.
The entry of the air is very simply regulated by means of the cords G, and a click
and rack arrangement F, H (fig. 2) which cause the dise or plate B to turn on its axis
to the required angle. The click and rack arrangement is so disposed as to open the
ventilator as little as desired.
Any water which, by reason of a beating rain, would enter the apparatus and strike
against the horizontal blades or slats D, would make its exit outwards by means of the
arrangement shewn in figs. 1 and 3.
The apparatus can be made in any suitable material such as copper, sheet iron, zinc.
The fixed disc or plate A, is secured in a frame which is fitted in the window, or wall
of an apartment.
Having now described my Invention and in what manner the same may be
performed, I claim :-
1. The improved ventilating apparatus, substantially as herein described and shewn
in the drawings, and for the purposes set forth.
2. In a ventilating apparatus as herein described, the combination with the fixed
perforated dise or plate A, and the moveable perforated disc or plate B, centered
thereon, of the horizontal slats or blades D, carried by the fixed plate or disc and
arranged louver wise, and means for operating the said moveable disc or plate,
substantially as described and as illustrated in the drawings.
Dated this 9th day of March 1887
ERNEST DE PASS, Fel. Inst. P.A.,
68, Fleet Street, London,
Agent for the Applicant.