Improvements in Ventilators for Railway Cars, Cabins, and similar Spaces.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvements in Ventilators for Railway Cars, Cabins, and
similar Spaces.
I, REGINALD HADDAN, of the firm of Herbert & Co., Patent Agents, of
18, Buckingham Street, Strand, W.C. London, Civil Engineer, do hereby declare
the nature of this invention, a communication to me from abroad by Willey Julius
Fellheimer, of New York, N.Y., United States of America, Gentleman, 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 an improvement in ventilators of the kind adapted to
ventilate the interior of cars, cabins and similar spaces, and the invention consists in
the details of construction set forth in the following Specification and claim and
illustrated in the accompanying drawing, in which:
Figure 1, is a plan view of the ventilator.
Figure 2, is a sectional side elevation of the ventilator.
Figure 3, is a section along a Figure 2.
Figure 4, is a section along y y Figure 2.
In this drawing the letter B indicates a roof of a car to which is screwed or fixed
a bushing h. To the bushing his screwed a thimble f. Said thimble has a conical
journal bearing or seat in its upper end in which is arranged the conical journal m
fixed to the fan shaft u to which shaft is fixed a fan comprising wings or screw
blades d.
The fan driving blades c are secured to the fan shaft u by a slotted collar C which
engages the shaft and blades and prevents the latter from turning independently of
the shaft. The blades c enter the slots in the collar C and said collar has a tongue D
through which a screw E is passed into the shaft u fixing the collar to the shaft. The
lower parts of the blades c are secured to one another by the tongues F and screws or
rivets G.
The blades c rotate in a cap or hood A said hood being semi-cylindrical or open on
one side so as always to leave one blade c exposed to the wind so as to secure rotation
of the blades c and shaft u. The hood A is supported by arms p extending from a
collar H rotating about the thimble f. A vane & keeps the front of hood A turned to
the wind. Said vane is held in place by a plate or plates e and by arm K secured to
the vane by a screw K¹.
b
The arm K has an eye or head L passing over the shaft u and a lug or screw M
passing through the head L enters a groove in the shaft u so as to prevent the arm K
and hood A slipping off the shaft but leaving the shaft free to rotate independently of
the hood. The rotation of the shaft u rotates the screw blades d so as to draw air
through the opening S into the housing n surrounding the blades d said air being
forced out of the housing n through the openings g g' into a channel I in the car
roof B. Said channel I leads to the open air in any suitable way as for example,
by means of openings (not shown) at the side of the car or cabin, which openings
can be covered or protected by netting or gauze to prevent entry of dust while
allowing outflow of air.
The screw w actuates a lever N swinging about a fulcrum O so as to press an elastic or
rubber head or block o' more or less firmly against shaft u thus securing a brake for
the shaft to regulate the speed of rotation.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. The combination of a stationary thimble having a journal bearing at its upper
end portion and a bushing fixed to its lower end portion, a rotary shaft extending

page_text: through the bushing and thimble and having a journal arranged on the said journal
bearing, a fan mounted on, the shaft below the bushing, a housing inclosing the fan
and having an air draught orifice, a series of driving blades fixed to the shaft above the
thimble, a collar journalled to rotate upon the upper end of the thimble, a rotary hood
open at one side, loosely mounted on the fan shaft and having arms rigidly con-
nected with said rotating collar and a vane rigidly connected with the hood whereby
the driving blades projecting through the open side of the hood are presented to the
wind, substantially as described.
2. The combination of a stationary thimble having a conical journal bearing in its
upper end and a fixed bushing secured to its lower end, a rotary shaft extending
through the bushing and thimble and having a conical journal setting in the journal
bearing, a fan mounted on the shaft below the bushing and thimble, a series of driving
blades fixed on the shaft above the thimble, a housing inclosing the fan and having
an air draught opening, a collar journalled to rotate upon the upper end of the thimble,
a rotary hood open at one side, loosely mounted on the fan shaft and rigidly connected
with the rotating collar and a vane connected with the hood whereby the driving
blades projecting through the open side of the hood are presented to the wind,
substantially as described.
3. The combination of a roof having a horizontal air escape channel and air inlet
orifices opening thereinto, a stationary thimble extending through the roof and having
at its upper end a journal bearing and at its lower end a fixed bushing, a shaft
extending through the bushing and thimble, and provided with a journal setting in
the journal bearing, a fan mounted on the shaft below the bushing and thimble, a
housing secured to the roof, inclosing the fan and having an air draught orifice, a series
of drifting blades secured to the shaft above the thimble, a collar journalled to rotate
upon the upper end of the thimble, a rotary hood having an open side, loosely
journalled on the shaft and rigidly connected with the rotating collar and a vane
secured to the hood, substantially as described.
Dated this 25th. ...
he 1900
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents for Applicant.