of Air, and in Apparatus Employed therein.
Year: 1885

page_text: This Specification was, upon the 15th day of December 1887, amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
of Air, and in Apparatus Employed therein.
I HENRY FRANCIS GREEN of Brooklyn Kings County State of New York one
of the United States of America and of N° 147 Queen Victoria Street in the City
of London Engineer Son Legal representative and sole administrator of David
Culver Green late of Brooklyn aforesaid Engineer who died intestate on the 8th day
of October 1884 do hereby declare the nature of my invention for IMPROVEMENTS
IN EFFECTING AND REGULATING INDUCED CURRENTS OF AIR AND IN APPARATUS
EMPLOYED THEREIN, to be as follows:-
The improvements have reference to means of effecting and regulating induced
currents of air for ventilation or such like use, particularly in connection with
apparatus such as is described in the specification of Letters Patent granted to
Alexander Melville Clark on a communication made to him from abroad by the
late David Culver Green aforesaid dated the 6th day of November 1879 N° 4536
and consists of means for effecting contraction of the area of the channel through
which the induced current is being caused to pass and for regulating or controlling
the current of air induced therein.
The improved apparatus consists of a funnel or cone shaped contracting piece
formed in parts or sections pivotted at the larger end or mouth so as to be capable
of being swung within certain limits on pins, pivots or supporting centres of motion
within the channel whose area is to be contracted at pleasure. These pins pivots
or centres hereafter called pivots may be conveniently carried by a circular band of
metal secured by rivets or otherwise within the channel which may be the air
shaft or ventilator of a ship or other place; or these pivots may be otherwise
supported as found most convenient, such as directly from the sides of the channel.
The contracting piece called hereafter the " contraction should be constructed
of size and diameter of air-way to suit the air shaft and should be of taper or
degree of inclination from its large to its small diameter in proportion to the work
it has to perform as may be determined upon. The parts of the "contraction"
may be swung apart at their small ends so as to leave the channel practically free
for unimpeded flow of air at such times as when the induced current is not needed
for effecting ventilation or otherwise, as when a ship is at sea and ordinary
ventilation efficient.
"

page_text: Suitable means are provided for operating the parts of the contraction to open
it, or close it, by separating or drawing together the smaller ends thereof.
This means of effecting the movements of the parts of the contraction relatively
to each other may in the case of a contraction in two parts or bi-sections be
constituted by a lever or arm attached but operated in reverse directions by being
connected to a rocking lever, centrally pivotted, at opposite ends thereof and
movement in either direction imparted to this lever will give simultaneous move-
ments to these arms.

page_text: of Air, and in Apparatus Employed therein.
I HENRY FRANCIS GREEN, of Brooklyn, Kings County, State of New York,
one of the United States of America, and of No 147 Queen Victoria Street, in the
City of London, Engineer, Son, Legal Representative, and sole Administrator of
David Culver Green. late of Brooklyn aforesaid, who died intestate on the 8th day
of October 1884 do hereby declare the nature of my invention for IMPROVEMENTS
IN EFFECTING AND REGULATING INDUCED CURRENTS OF AIR
AND IN APPARATUS
EMPLOYED THEREIN and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
-
The improvements have reference to means of effecting and regulating induced
currents of air for ventilation, or such like use, particularly in connection with
apparatus such as is described in the specification of Letters Patent granted to
Alexander Melville Clark on a communication made to him from abroad by the
late David Culver Green aforesaid dated the 6th day of November 1879, N° 4536,
and consists of means for effecting contraction of the area of the channel through
which the induced current is being caused to pass and for regulating or controlling
the current of air induced therein.
The accompanying drawings indicate apparatus adapted to effect these objects in
a convenient manner. In these views Figure is a horizontal section with the
contractor open, Figure 2 a cross section thereof and Figures 3 and 4 are corre-
sponding views of the contractor closed a, a' are the contractor paris in the
cylinder b, forming the channel e¹, el. e being a hood, c is the air nozzle, the
control cock. c, the supply pipe Figure 5 is a side view of the closable opening d
closed by a flap d' controlled by notched handle d² which appears in section in the
main Figure 1.
The improved apparatus consists of a funnel or cone shaped contracting piece
formed in parts or sections a, a pivotted at the larger end, or mouth at a² so as to
be capable of being swung within certain limits on pins, pivots, or supporting
centres of motion a² within the channel e¹ e' whose area is to be contracted at
pleasure. These pins pivots, or centres, hereafter called "pivots" a² may be
conveniently carried by a circular band of metal a secured by rivets, or otherwise,
within the channel e¹ which may be the air shaft, or ventilator of a ship, of which
might represent the upper deck, g the main deck and the lower deck or hold or
other place; or these pivots a² may be otherwise supported as found most
convenient, such as directly from the sides of the channel e but this will be an
obvious matter for modification to circumstances to any competent mechanic.
"
The contracting piece a a¹ called bereafter the contraction should be con-
structed of size and diameter of air-way to suit the air shaft e¹ and should be of
taper, or degree of inclination from its large diameter to its small diameter in
proportion to the work it has to perform as may be determined upon. The parts
of the "contration " u, may be swung apart at their small ends so as to leave
the channel practically free for unimpeded flow of air at such times as when the
induced current is not needed for effecting ventilation, or otherwise, as when a ship
is at sea and ordinary ventilation efficient.
a¹

page_text: Suitable means indicated in this present arrangement by links a³ a¹ to arms a
worked by the rocking lever a' respectively linked or connected to the lugs on the
parts a, a, are provided for operating those parts a, a¹ of the contraction to open
it, or close it, by separating, or drawing, together the smaller ends thereof.
This means of effecting the movements of the parts a, a¹ of the contraction
relatively to each other may in the case of a contraction in two parts or bi-sections
be constituted by a lever, or arm a, attached, but operated in reverse directions by
being connected to a rocking lever a centrally pivotted, at opposite ends thereof
and movement, in either direction, imparted to this lever a will give simultaneous
movements to these arms, or this may be modified without departing from the
nature of my invention.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare what
I claim is
1. Effecting and Regulating induced currents of air by the aid of adjustable
contractions as and for the purpose set forth.
2. The construction and use of apparatus for effecting and regulating induced
currents of air as and for the purposes set forth.
Dated this 30th day of September 1885.