IMPROVE MENTS IN FANS OR APPARATUS FOR FORCING OR DRAWING AIR
Year: 1869

page_text: LETTERS PATENT to Henry John Richman, of No. 48, Porchester
Terrace, in the County of Middlesex, for the Invention of "IMPROVE
MENTS IN FANS OR APPARATUS FOR FORCING OR DRAWING AIR."—A com-
munication fromabroadbythe Inventor, Walter Watson Hughes,atpresent
residing at the Hotel de Russie, at Rome.
aled the 27th July 1869, and dated the 8th February 1869.
PROVISIONAL SPECIFICATION left by the said Henry John Richman
at the Office of the Commissioners of Patents, with his Petition, on the
8th February 1869
I HENRY JOHN RIUBHAN; of No. 48, "Porchester Terrace, in the County
of Middlesex, do hereby declare the nature of the said Invention for
IMPROVEMENTAI IR FANS OR APPARATUR FOR:: FORCING. OR DRAWING AIR,"
tos beras follows
Take a turbine or fan with two discs, the one solid or close, the other
open in the centre to admit the air. A ring is fixed round the outside of this
opening to the diso, and revolves air-tight in an opening in the front end of
the caring. The spindle or shaft is fixed in the centre of the

page_text: solid disc, and passes through the opening in the other end of the turbine or
fan without being attached to it, to an upright on which this end of the spindle
which carries the pulley turns. The other end of the shaft or
spindle revolves in a cross bearing fixed inside the casing. The
blades or fans may be of any number and any length or breadth required.
The diameter of the casing is greater than the diameter of the fan or turbine,
and increases as the blades are lengthened between the two discs;
say, if the fun is 20 inches diameter and the length of the blades between the
two discs is 3 inches, then the diameter of the casing will be
from 25 to 26 inches. The length of the casing is considerably
greater than that of the fan, so that there is an air space of large capacity at
the back of the fan and behind the cross bearing which supports
the inner end of the fan shaft or spindle. The air enters the
fan at the opening in the centre of the disc that revolves in the end of the
casing, and is pressed by the fan against the sides of the casing,
and the pressure being the same on the end of the casing and the solid end of the
disc of the turbine as it is against the sides of the casing the
air is pressed or forced through the discharge pipe or pipes, which are con-
nected with the air space at the back of the fan in the same manner as the
water is discharged or driven through the discharge pipes, on the principle
described in the Specification of my Patent, dated the 28th day of
March 1868, No. 1059.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry John Richman in the Great Seal Patent Office on the
7th August 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
JOHN RICHMAN, of No. 48, Porchester Terrace, in the County of Middlesex,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighth day of February, in the year of
our Lord One thousand eight hundred and sixty-nine, in the thirty-second
year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Henry John Richman, Her special
licence that I, the said Henry John Richman, my executors, admini-

page_text: strators, and assigns, or such others as I, the said Henry John
Richman, 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 FANS OR APPARATUS FOR FORGING
OB DRAWING AIR," a communication to me from abroad by the Inventor,
Walter Watson Hughes, at present residing at the Hotel de Russie,at Rome,
upon the condition (amongst others) that I, the said Henry John Richman,
my executors or administrators, by an instrument in writing under my, or
their, or one of their bands and seals, should particularly describe and ascer-
tain 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 Seal Patent
Office within six calendar months next and immediately after the date of the
Baid Letters Patent.
NOW KNOW YE, that I, the said Henry John Richman, do hereby
declare the nature of the said Invention, and in what manner the same is to
be performed, to be particularlydescribed and ascertained in and bythefollow-
ing statement thereof, that is to say:-
I make a turbine or fan with two discs, the one solid or close, the other
open in the centre to admit the air. A ring or flange is formed round this
opening, and revolves air-tight in an opening at the front end of the casing.
The spindle or shaft is fixed in the centre of the solid disc, and
passes through the opening in the other end of the turbine or
fan without being attached to it, to a bearing in which this end of the spindle
which carries the pulley turns. The other end of the shaft or spindle revolves
in a bearing fixed in the casing. The blades or fans may be of
any number and any length or breadth required. The dia-
meter of the casing is greater than the diameter of the fan or
turbine, and increases at the blades are lengthened between the two discs ;
say, if the fan is 20 inches diameter and the length of the blades between the
two discs is 3 inches, then the diameter of the casing will be from 25 to 26
inches. The length of the casing is considerably greater than that
of the fan, so that there is an air space of large capacity at the back of the
fan. The air enters the fan at the opening in the centre of the
disc that revolves in the end of the casing, and is pressed by the fan against

page_text: the sides of the casing, and the pressure being the same on the
end of the casing and the solid end of the disc of the turbine as it is against
the sides of the casing the air is pressed or forced through the discharge pipe
or. "pipes; which are connected with the air space at the back of
the fan in the same manner as the water is discharged. 5
or driven through the discharge pipes, on the principle described.
in the Specification of my Patent, dated the 28th day of March'
1868 (No 1059)

page_text: constructing fans. or apparatus for forcing or drawing air, substantially as
above described.
In witness whereof, I, the said Henry John Richman, have
hereunto set my hand and seal, this Twenty-eighth day of July, in the
year of our Lord One thousand eight hundred and sixty-
nine.
H. J. RICHMAN. (L.B.)