Year: 1888

page_text: Date of Application, 27th June, 1888
Complete Specification Left, 27th Mar.. 1889
Complete Specification Accepted, 4th May, 1889
We, JAMES CORMACK and WILLIAM CORMACK of 36 Abercorn Street, Glasgow in
the County of Lanark, Scotland, Engineers do hereby declare the nature of this
invention to be as follows:-
:
"
This Invention relates to simple and efficient means for rendering Ventilators more
efficient than heretofore
The ventilator or apparatus as constructed according to the Invention is preferably
fitted as ordinarily at or on the outlet of the chimney, passage, or pipe communi-
cating with place desired to be ventilated. At or near top of ventilator are formed
side openings constituting the outlet. Suspended or capable of shifting horizontally
by means of links, chains or otherwise between and so as to occupy the central
position of said openings is a tube shell or case preferably of cylindrical shape having
coned or other shaped rings on either end corresponding with similar rings fixed
round outlet openings. The wind blowing against one end of the suspended
aforesaid shell acts against the exposed ring and forces it against its corresponding
ring on outlet, thus preventing a blow into said outlet, at same time opening the
opposite outlet into which the diverging mouth or ring on opposite side of shifted
shell is also forced, and the wind blowing through the shell induces a current from
opened outlet.
D
A
1
1000

page_text: Wo, JAMES CORMACK and WILLIAM CORMACK, both of 36 Abercorn Street,
Glasgow, in the County of Lanark, Scotland, Engineers, 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:-
Our said Invention relates to an improved Ventilator of simple construction, and
more efficient in its notion than those heretofore generally used.
And in order that our Invention may be properly understood we have appended an
explanatory sheet of Drawings whereon Fig. I is n vertical section of the Ventilator
as applicable for putting inside the roof of a building. Fig. 2 is a vertical section of
an outside or open ventilator, and Fig. 3 is a transverse section of Fig. 2.
The Ventilator as constructed according to our Invention consists of a preferably
cylindrical metallic shell a, having at each end thereof a diverging or bell mouth r. s.
respectively, which constitute the outlets for the vitinted air &c. On and open to
the top of said sbell a is formed an air-tight rectangular recess or case g, into top of
which recess are rigidly fixed the top ends of two flexible metallic wires e; the
lowor ends being likewise fixed into a tube or shell d which tube d is thereby
suspended and capable of easily shifting nearly horizontally inside the shell a. The
tube d is kept in central position by means of guides/fixer on shell a as shown at
Figs. 2&3; or the guides may obviously be fixed on tube d and slide against inside
of shell a. The shifting tube d has fixed on both ends a diverging or coned ring
or valve b. c. respectively, nearly corresponding with divorging outlets or
orifices r. s. If desirable to prevent noise and make tight joints between valves be
and orifices r. s. respectively, an india-rubber, leather or other ring or washor may
obviously be fixed on either diverging rings or valves, so as to hear between them
when they come together.
In lieu of having the tube & suspended by means of wires, cluins or other equivn-
lonts said Lube may meroly slide over and be kept in position by the guidos; or it
may run between sels of rollers; the wires and recess 9, boing thus dispensed with.
The shell a is ordinarily fitted on bottom with an uptake passage or inlet n for tho
vitiated air &c.; but for ventilating open roofed buildings said inlet may be dispensed
with and openings formed into or round shell a, the "How tubes or shafts o Fig. 1
being in this case fitted at their outor ends into the roof.
When
Tho ventilator operates in the following manner. In calm weather the tubo d
being suspended by wires occupies the midway position as shown at Fig. 1. The
valves be being thus open, allow an uninterrupted outlet past both, for the vitiated
air &c. When the wind blows at right angles to the movement of tube d an outward
suction is caused on both valves which thus remain open equally or nearly so.
the wind blows against the valve b as shown at Fig. 2 the tube d is forced to one side
and causes the valve to shut, thereby proventing a down draught, at same time
opening full the valve c. When the wind blows from opposito direction against
valve c the action is obviously similar, but reversed as rospects direction of wind.

page_text: Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we declare that what we
claim is,
1st. The construction and combination of parts of a Ventilator having a movable
tube with valves, as hereinbefore described and shown on Drawings.
2nd. In Ventilators, the combination of a movable tube d with diverging orifices
or valves 6 c, arranged and operating as and for the purposes hereinbefore described
and shown.