Improvements in Ventilators.
Year: 1892

page_text: Date of Application, 2nd Mar., 1892
Complete Specification Left, 2nd Dec., 1892-Accepted, 25th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Ventilators.
We, CHARLES FOSTER KITE and CHARLES KITE both of Christopher Works,
Chalton Street, London, N.W. Ventilating and Sanitary Engineers do hereby
declare the nature of this invention to be as follows:-
According to this invention the valve plate is mounted on a rod pivotted inside
the valve box, and operated by a hinge jointed lever working in a slotted cross bar
fixed in such box. A frame is fitted round the interior of the valve box against
which the valve plate when closed fits. The jointed lever works up and down in a
slot formed in the face plate of the valve box, and sufficient downward play is
allowed to such lever to extend the hinge joint, whereby the valve plate is pressed
against the frame, and there tightly held until released by the upward movement
of the lever which operates the hinge joint and thus opens the valve plate.
The frame may be fitted with felt or other suitable packing, so as to cause the
valve plate when closed to set closely against the same, thus rendering the ventilator
draught proof. The jointed lever may be operated by hand or in any other con-
venient manner, and the valve box may be of any convenient form. The ventilator
may be fitted with a spring, screw, or other suitable regulating mechanism, to allow
of its being adjusted to any desired position.
תני
Sub 1900
ELT & Co.,
33, Southampton Buildings, Holborn, London, Agents for Applicants.
COMPLETE SPECIFICATION.
Improvements in Ventilators.
We CHARLES FOSTER KITE, and CHARLES KITE both of Christopher Works,
Chalton Street, London, N.W. Ventilating and Sanitary 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 :-
This invention has for its object to produce a simple cheap and efficient ventilator
which combines the advantages of being draught proof and totally noiseless.
According to this invention the valve plate of a ventilator is pivoted inside the
valve box and operated by a jointed lever working to and fro in a slotted bar fitted
with a suitable spring which serves to keep the valve plate in a vertical position
when open.
When closed such valve plate abuts against suitable stops fixed in or
formed on the interior of the valve box. A slot is formed in the face plate of such
box to allow sufficient play to the lever to expand and close the hinge-joint. When.
the lever is operated in one direction (which may either be backwards or forwards)
the valve plate is pressed tightly against the stops on the valve box thus closing the
ventilator. By operating the lever in the reverse direction the valve plate is drawn
down past the spring until it comes in contact with a stop formed in or on the
slotted bar against which it is held by the action of the spring as indicated in dotted
lines in the accompanying drawing, thus keeping the valve plate in a vertical
position and so opening the ventilator. The stops are covered with felt or other
suitable material to render the action of the ventilator noiseless and prevent draught.
The jointed lever may either be operated by hand, or in any other convenient
manner, and the valve box may be of any convenient size and form.
The accompanying drawing shews in side elevation a ventilator constructed

page_text: according to our invention one side of the valve box being removed in order to
clearly shew the internal construction and arrangement.
a is the valve plate, the valve box, c'the jointed lever, the slotted bar with
stop d', e the spring, the stops on the valve box. When the ventilator is fixed in
position the face plate of the valve box is flush or nearly so with the wall face
while the lever handle 9 projects through the slot in such face plate described
above.
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.
In a ventilator the combination of a valve plate, jointed lever, slotted bar, spring
and stops, all constructed arranged combined and fitted substantially in the manner
-hereinbefore described and shewn.
1
1.
1003
ELT & Co.,
33, Southampton Buildings, London, W.C., Agents for Applicants.