Iм- PROVEMENTS IN APPARATUS FOR USE IN VENTILATING SHIPS OR VESSELS AND OTHER PLACES
Year: 1872

page_text: LETTERS PATENT to Thomas Christy, the younger, of 155, Fenchurch
Street, in the City of London, Merchant, for the Invention of "Iм-
PROVEMENTS IN APPARATUS FOR USE IN VENTILATING SHIPS OR VESSELS AND
OTHER PLACES." -A communication from abroad by Farnham Zebediah
Tucker, of the City of Brooklyn, in the County of Kings, in the
State of New York, in the United States of America.
Sealed the 7th February 1873, and dated the 17th August 1872.
PROVISIONAL SPECIFICATION left by the said Thomas Christy at the
Office of the Commissioners of Patents, with his Petition, on the
17th August 1872.
I, THOMAS CHRISTY, the younger, of 155, Fenchurch Street, in the
City of London, Merchant, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN APPARATUS FOR USE IN VENTILATING SHIPS
OR VESSELS AND OTHER PLACES," (a communication to me from abroad by
Farnham Zebediah Tucker, of the City of Brooklyn, in the County of
Kings, in the State of New York, in the United States of America). to
be as follows :—
The Invention relates, first, to means for effecting the raising and
lowering of the ventilator pipe and for holding it in any desirable

page_text: position, and secondly, to the use of an umbrella shaped extension or
enlargement of the opening or passage to the ventilator; such extension
or enlargement being easily put on or off and folded together so as to
occupy only a small space when taken off.
This apparatus consists, first, of a stationary pipe which is fastened
into the deck of a vessel or the floor of a building, as the case may be,
and is provided on its inner surface with a spiral or screw thread and
a door below that spiral opening below deck or floor communicating
with parts to be ventilated, and capable of being closed at will.
A moveable pipe is applied at the upper part yet so as to revolve
easily within the stationary pipe, the lower part of this moveable pipe
being provided with rollers to run on the spiral formed on the interior
of the stationary pipe to vary the height and position of the movable
pipe.
The upper part of this movable pipe is furnished with a circular 1
nozzle or sideway opening to which is applied the umbrella shaped or
formed extension which is provided with a centre stem and arms and
stretchers or links, the arms being covered with a somewhat conically
shaped fabric except at that part of the apex or end which is.joined on
to the nozzle.
The stem of the umbrella extension is held in position within the
nozzle so that on extending the arms the cover will be in contact with
the edge of the nozzle or opening so that air may be collected thereby
and conducted down the pipe to the parts to be ventilated.
Different sizes of umbrella extension may be employed to the same 2
nozzle depending on the amount of air desired or other conditions. The
outer end of the stem of the umbrella is supported by an adjustable
rod.
An india-rubber ring or other suitable packing is applied between a
fixed and a movable ring capable of screw adjustment at the junction a
of the two pipes to prevent the passage of water at that part. The
whole may be removed and a water-tight cover applied to the opening
for the pipe.
The stom and wile may be lollow or solid

page_text: SPECIFICATION in pursuance of the conditions of the Letters Paient,
filed by the said Thomas Christy in the Great Seal Patent Office
on the 15th February 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
CHRISTY, the younger, of 155, Fenchurch Street, in the City of London,
Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of August, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Thomas Christy, Her special licence that
I, the said Thomas Christy, my executors, administrators, and assigns, or
such others as I, the said Thomas Christy, my executors, administrators,
and assigns, should at any time agree with, and no others, from time
to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN APPARATUS FOR USE
IN VENTILATING SHIPS OR VESSELS AND OTHER PLACES," a communication to
me from abroad by Farnham Zebediah Tucker, of the City of Brooklyn,
in the County of Kings, in the State of New York, in the United States
of America, upon the condition (amongst others) that I, the said Thomas
Christy, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed
in the Great Scal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Thomas Christy, do hereby declare
the nature of tho said Invention, and in what manner the same is to
be performed, to bo particularly described and ascertained in and by the
following statement thereof, that is to say :-
The Invention relates, first, to means for effecting the raising and
lowering of the ventilator pipe and for holding it in any desirable
position which is especially necessary on board ships or vessels, and
secondly, to the use of an umbrella shaped extension or enlargement of
the opening or passage to the ventilator, such extension or enlargement

page_text: Figure 1 is a vertical section through its centre line; Figure 2, a
vertical front elevation; Figure 3, a vertical section in larger scale
through the centre of the ventilator pipe near the upper deck of a vessel; 1
Figure 4, a top view of the same; Figure 5 is a perspective view of
parts; Figs. 6, 7, 8, 9, and 10 are detail views.
This ventilator consists, first, of a stationary pipe E, which is fastened
into the decks of a vessel or the floors of a building, as the case may be.
This pipe is furnished with a coil or thread a, a, of flat or angle iron or 1
any other suitable material, bolted or rivetted or otherwise fastened, solid
on its inside face. Below this coil is a door b attached to the pipe E
which may be opened or closed at will. Such doors or openings are
also provided along its whole length wherever ventilation may seem
desirable. Pipe E may be extended downward as far as desired so as 2
to conduct the air from the ventilator wherever required.
This ventilator consists, secondly, of a moveable pipe F which revolves
easily within pipe E, the latter serving as a guide for it. Pipe F is ou
its lower end furnished with a proper number of rollers, say, two or
three, r, r, by which it is supported on the coils a, a, therefore by 2
turning the pipe F the one or the other way it is raised or lowered, one
revolution of it raising it or lowering it as much as the pitch of said
coil. The upper part of pipe F is furnished with a nozzle G of circular
shape, see Figure 2, and closed on top.
This ventilator consists, thirdly, of an umbrella shaped extension of a
nozzle G. This umbrella extension is constructed with a centre stem e
with arms (as many as preferred) with one end of them binged near
the end of the centre stem e. These arms are all covered
excepting as much of the hinged end that is on the inside of nozzle G
when set, with a conical shaped cloth of a suitable material, and will å
open and shut similar to the common umbrella. The upper or hinged
end of the umbrella shaped extension is hooked or hinged into the

page_text: interior of pipe F into strap g in such a way that the stem e of the
umbrella extension will be central in the nozzle G, and when opened
out its arms touch all around the inside of the nozzle G, thus supporting
the umbrella extension in a horizontal position. The cloth or covering
of the umbrella extension will close tight around the nozzle G. By the
means of this umbrella extension the air will be concentrated and
forced through nozzle G into pipe F. The stem and arms of the
umbrella extension may be made of pipe or tubing or of solid material
as preferred.
There may be more than one size of this umbrella extension, onc
large and the others smaller, in this way increasing or diminishing the
ventilation as desired. There is further a ring K fastened to the upper
floor or deck (see Figures 3 and 4) into which the pipe E is fastened,
and which is furnished with a half circular strap n located just above
pipe E (see Figure 3) which is fastened to K at n³, and which extends
around on the inside of K to 12, and is there furnished with a screw
thread so that it may be screwed tight by means of nut 7, clamping
thereby the pipe F solid to the ring K, and thus preventing the former
from turning. On top of ring K is a follower K', and between both
is a rubber ring or gasket p which when compressed between the angular
faces of both by means of screws 8, 8, closes water-tight around the
pipe and prevents any water from entering around it below decks.
The pipe F may by these means be raised as much as desired. It may
be turned with its nozzle G and with its umbrella extension in the
proper direction to the wind and held firm in this position by the
strap n. The umbrella extension may be taken off, the pipe F may be
screwed down on deck as far as desirable by loosening the strap n, the
follower K' bolted down, the strap n tightened again and a water-tight
cover be properly fastened over the nozzle G so as to make every part
above deck water-tight and immoveable, the whole occupying only a
very small space on deck.
Having thus described the construction and the operation of the
Invention as communicated to me, I would have it understood that what
I claim is,-
First. The detachable umbrella shaped extension when combined
and used in connection with the ventilating pipe F in the manner sub-

page_text: Second. The ventilating and moveable pipe F having an opening G
to admit the umbrella shaped extension, and provided at its lower end
with rollers r, r, in the manner and for the purpose, substantially as
described.
Third. In combination with the foregoing the stationary pipe E
having a screw thread or coil on its inside face, as and for the purposc,
substantially as set forth.
Fourth. The arrangement of ring K to strap n, follower K', and
packing ring p, substantially as and for the purpose set forth.
In witness whereof, I, the said Thomas Christy, the younger, have
hereunto set my hand and scal, this Fourteenth day of February,
in the year of our Lord One thousand eight hundred and seventy-
three.