An Improved Ventilator for Passenger Carriages.
Year: 1892

page_text: Date of Application, 29th Nov., 1892-Accepted, 14th Jan., 1893
COMPLETE SPECIFICATION.
An Improved Ventilator for Passenger Carriages.
I, ALEXANDER BLACK of Toledo, Ohio, United States of America Manu-
facturer 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 relates to a passenger carriage ventilator in which mechanism is
employed in conjunction with the ordinary carriage window frame. It has for
object to provide means for conducting air freely from the outside atmosphere to
the interior of the carriage and to provide means for regulating the quantity and
cleansing the same.
In the accompanying drawing
Fig. 1 is a perspective view of the entire mechanism, shewing prominently the
side placed within the carriage,
Fig. 2 a perspective view shewing the side placed outside the carriage,
Fig. 3 a perspective view of the mechanism like that of Fig. 1 but having its
screen sash adjusted in a different position, and
Fig. 4 a perspective view of the apparatus placed within a carriage window and
as seen from the interior of the carriage and in operating position.
A is a screen sash made in two parts and hinged at B in such a manner that it.
may be adjusted inwardly and outwardly as shewn at B in Fig. 3, the sides C
being made in bellows form of any suitable material but preferably of gum
cloth.
The side D is formed of rigid material such as wood, metal or prepared
board. Besides the hinged adjusting joint B, the sash A and side D are, by
being arranged in bellows form, adapted to be adjusted towards and from each
other by means of the flexible sides C for the purpose of regulating the size of
the end aperture E to any desired cross sectional area.
The adjustment is controlled by means of the knuckle jointed arm L pivotted to
the sash at F and to the side D at G, and together at H, and adapted to be rigidly
locked to sash A by thumb screw 1. An aperture J (Fig. 2) is provided between
the sash A and side D, and the sash A is made longer than the side D and
terminates in projecting lugs or extensions K.
The apparatus operates as follows:-The sash A is turned on its hinges B to
the position shewn in Fig. 3 to allow of the insertion of lugs K within the window
frame or sash ways of the window frame when sash A is straightened upon its
hinges by being drawn inward when it takes the position shewn in Fig. 4 and locked
therein by dropping the window sash upon it and tightening the thumb screw I to
make rigid the knuckle joint, the aperture E as before explained being also
adjusted in this way.
In a carriage with this apparatus fixed in a window, and having the end E.
disposed towards the front end of the carriage and its rear end open, as shewn at J,
beyond the outer line of the exterior side of the carriage, the ventilation proceeds
as follows: The knuckle joint lock is adjusted to the extent of opening the side D
outwardly, thus regulating the size of the front end opening E so as to control the
quantity of air admitted to sash A. This latter is covered with a fine screen of
any suitable material adapted to separate cinders and dust from the inflowing air,
causing it to pass into the carriage in a cleansed condition, said cinders and dust
passing to the rear of the mechanism and out into the open atmosphere through
aperture J. It is obvious that when the aperture E is largest the volume of air
admitted to the carriage will be largest provided the carriage is in motion, and that
the inflowing volume of air will be augmented with the increasing speed of the

page_text: carriage, and that it will be reduced with the decreasing speed, and that the
aperture E may be closed to the extent of cutting off the entire inflowing current
of air through this source.
A partial substitute for the knuckle jointed arm L is found in the chain L'
when adapted to adjustably connect the sash A and the side D though not as
desirable at joint L.
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. In a carriage window ventilator the combination of the screen sash A formed
in two parts and hinged together in the middle of the ventilator, the side D, and
the flexible material connecting the screen sash with the said side, for the purpose
specified substantially as described and shewn.
2. In a carriage window ventilator, the screen sash A, the lugs K formed upon
each end of the sash, the hinges B, the side D and the flexible material C, con-
necting the side with the screen sash, combined with means, such as those referred
to for adjusting the said sash, for the purpose specified substantially as described
and shewn.
3. In a car window ventilator, the screen sash A, the side D, and the flexible
connections from the side to the sash, leaving an aperture J at one end and an
aperture E at the opposite end of the ventilator, in combination with the knuckle
jointed arm L pivotted to the side D and to the sash to regulate the size of
aperture E, for the purpose specified substantially as described and shewn.
4. The combination with a carriage window frame, of a ventilator consisting of
an open ended case comprising the side D, hinged screen sash A and the material
connecting the said side and sash, and means such as those referred to for adjusting
and locking the sash to regulate the size of one of the open ends, substantially as
described and shewn.
Dated this 29th day of November 1892.
THOMAS R. SHILLITO,
89, Chancery Lane, London, W.C., Agent for the Applicant.