AN IMPROVES APPARATUS FOR PURPOSES OF VENTILATION
Year: 1855

page_text: LETTERS PATENT to Louis Henry Crudner and Frederic Louis Koebrig,
of Tottenham Court Road, in the County of Middlesex, for the Invention
T
"
of "AN IMPROVES APPARATUS FOR PURPOSES OF VENTILATION."
Sealed the 18th September 1855, and dated the 19th March 1855.
Sant
Tuuner
and Frederic Louis Koebrig at the Office of the Commissioners of
Patents, with their Petition, on the 19th March 1855.
We, LOUIS HENRY CRUDNER and FREDERIC LOUIS KOEBRIG, of Tottenham
Court Road, in the County of Middlesex, do hereby declare the nature of the
said Invention for "AN IMPROVED APPARATUS FOR PURPOSES OF VENTILATION"
to be as follows (that is to say):-
Our said apparatus is applicable to the ventilation of dwelling rooms, saloons,
offices, and all descriptions of apartments in houses, hospitals, barracks, ship-
rooms, manufactories, warehouses, laboratories, cellars, gas establishments, and
vehicles of all kinds, and has the advantages of totally clearing away the corrupt
or foul air in such places, and of effectually ventilating those of them that
are the most close and confined, without the employment of a counter draft,.
and of not being exposed as heretofore to any disturbance in its operation.
from the most violent gale of wind, or any atmospherical influences consequent.

page_text: on opening or shutting a door or window. And the manner in which we carry
into effect the said Invention is as follows:-We construct a tube or funnel
of any convenient material, which we place in any convenient situation to
form a communication between the interior of the apartment or otherwise
and the external atmosphere. And in connection with the said tube or funnel,
we adjust a fan wheel or blower, which we cause to rotate through the inter-
vention of suitable -mechanism by means. of. any convenient. motive power
hitherto in use for actuating mechanism. We claim the employment in
ventilating apparatus of a constant self-acting motive power independant of
the external atmosphere in the manner and for the purposes set forth and
described.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Louis Henry Crudner and Frederic Louis Koebrig in the
Great Seal Patent Office on the 19th September 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, Louis
HENRY CRUDNER and FREDERIC LOUIS KOEBRIG, of Tottenham Court Road,
in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of March, in the year of our
Lord One thousand eight hundred and fifty-five, in the eighteenth year of
Her reign, did, for Herself, Her heirs and successors, give and. grant unto
us, the said Louis Henry Crudner and Frederic Louis Koebrig, Her special
licence that we, the said Louis Henry Crudner and Frederic Louis Koebrig,
our executors, administrators, and assigns, or such others as we, the said
Louis Henry Crudner and Frederic Louis Koebrig; our executors, adminis-
trators, 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 "AN IMPROVED APPARATUS FOR PURPOSES OF VENTILATION," upon
the condition (amongst others) that we, the said Louis Henry Crudner and
Frederic Louis Koebrig, by an instrument in writing under our hands and
seals, should particularly describe and ascertain the nature of the said Inven-
tion, and in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that we, the said Louis Henry Crudner and Frederic
Louis Koebrig, do hereby declare the nature of our said Invention, and-in
what manner the same is to be performed, to be particularly described and*
ascertained in and by the following statement (that is to say) :-
Our said apparatus, which is applicable to the ventilation of dwelling rooms,
saloons, offices, and all descriptions of apartments in houses, hospitals, barracks,
ship-rooms, manufactories, warehouses, laboratories, cellars, gas establishments,
and vehicles of various kinds, has the advantages of totally clearing away the
corrupt, or foul air in such, places, and of effectually-ventilating those of them
that are the most close and confined, without the, employment of a counter
dráft, and of not being exposed as heretofore to any disturbance in its operation
from, the, wind or any atmospherical influences consequent on opening or
shutting a door or window. And the manner in which we carry into effect the
said Invention is as follows:-We-construct a tube or. funnel of any suitable
material, which we place in any convenient situation to form a communication
between the interior of the apartment or otherwise and the external atmo-
sphere, and in connection with the said. tube- or funnel we adjust a fan wheel
or blower, which we cause to rotate through the intervention of any self-acting
mechanism or motive power hitherto in use for similar purposes.
But in order that these our said improvements may be more fully understood
and readily carried into effect, we now proceed to describe them by the aid of
the accompanying Drawings, reference being had to the letters and figures
thereon marked (that is to say):-
:-
In each
Fig. 1 represents a side elevation of our improved apparatus; Fig. 2, a
vertical section of the same; Fig. 3, front view;.,Fig. 4, back or end view;
Fig. 5, a detached view of the fan wheel or blower; and Fig. 6, one of the
modes of fixing the apparatus for the purpose of' working the same.
Fig: the same letters of reference denote, similar corresponding parts. A, A,
outer case or cone; B, B, revolving fan wheel or blower; C, C, fan wheel
shaft, tapering towards the back or end; D, D, metal bars or bearing stretchers,
into which the pivot points or ends of the tapering fan wheel shaft works;
E, E, tightening screws for adjusting the pivot centres; F, F; flanges for
attaching the pipes or tubes to the said apparatus, as required for the purposes
of ventilation; G,.G, slot opening, through which the driving strap or band
works; H, H, strap wheel or pulley, keyed upon the shaft of the fan wheel
or blower, as in manner shown; I, I, wall or partition in which the apparatus
is fitted; J, J, room or other apartment to be ventilated; K, K, shaft, or
otherwise communicating with the external atmosphere. In conclusion to our
foregoing description, we would here briefly remark, that in all cases where

page_text: the apparatus is employed in carriages, steam boats, factories, or other build-
ings in which machinery is employed, the apparatus may be kept in constant
motion through the intervention of driving straps or bands in gear with the
engine or other machinery, or direct from the running wheels, if in carriages
or other vehicles; but in all cases it is necessary that some description of
motive power should be employed, for which purpose clock-work might be found
very advantageous, although we do not limit ourselves to any description of
motive power or shape of ventilator.
Having now fully described the nature of this our said Invention, and the
manner in which the same is to be performed, we would have it clearly under-
stood that we do not by any means intend to confine ourselves to the precise
details herein-before described, as the same might be varied without departing
from the general principle of these our said improvements; but that which
we do claim as new and of our said Invention is, the general construction and
arrangement of an improved ventilator in the manner and for the purposes
herein-before set forth and described.
In witness whereof, we, the said Louis Henry Crudner and Frederic
Louis Koebrig, have hereunto set our hands and seals, this Eighteenth
day of September, in the year of our Lord One thousand eight hundred
and fifty-five.
Witness to both signatures,
FREDERIC LOUIS KOEBRIG. (L.S.)
FREDK R. DARKIN CAMPBELL,
Clerk to Messrs. Weatherdon & Co.,
77, Chancery Lane.