CERTAIN IMPROVEMENTS IN BLOWING MACHINES
Year: 1833

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALEXANDER
CLARK, of Bagille, in the Parish of Hollywell, in the County of Flint, North
Wales, send greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Fifteenth day of January, in the year of our Lord One
'thousand eight hundred and thirty-three, and in the third year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
Alexander Clark, His especial licence, full power, sole privilege and authority,
that I, the said Alexander Clark, my executors, administrators, and assigns,
or such others as I, the said Alexander Clark, my executors, administrators, or
assigns, should at any time agree with, and 'no others, from time to time and
at all times during the term of years therein expressed, should and lawfully
might make, use, exercise, and vend, within England, Wales, and the Town
of Berwick-upon-Tweed, my Invention of "CERTAIN IMPROVEMENTS IN BLOWING
MACHINES;" in which said Letters Patent is contained a proviso obliging me,
the said Alexander Clark, by an instrument in writing under my hand and
seal, particularly to describe and ascertain the nature of my said Invention,
and in what manner the same is to be performed, and to cause the same to be
inrolled in His Majesty's High Court of Chancery within six calendar months
next and immediately after the date of the said in part recited Letters Patent,
as in and by the same, reference being thereunto had, will more fully and at
large appear.
NOW KNOW YE that in compliance with the said proviso. I. the said

page_text: Alexander Clark, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are particularly described
and ascertained in and by the following description thereof, reference being
had to the Drawings hereunto annexed, and to the figures and letters marked
thereon (that is to say):-
My Improvements in Blowing Machines consist in a modification of the
well-known rotary fan blowing apparatus employed for winnowing corn, for
blasting furnaces, and for other purposes, which improved modification of
apparatus I construct on a small scale in a portable form for domestic and
other uses to be worked by hand.
In the accompanying Drawings Figure 1 is a section of the apparatus taken
longitudinally, shewing its internal construction. Figure 2 is an external view
in the same direction. Figure 3 represents the reverse side, and Figure 4 is a
horizontal or top view. a, a, a, is the outer casing or box, which must be so
formed as to allow a wheel with fans b, b, b, to revolve within, the air being
admitted into the box through apertures c in the sides made concentric with
the axle, and expelled from the box by the centrifugal force of the rotary
fans through a contracted tube or nozzle d. The means by which I prefer
to give rotary motion to the fan is by mounting a wheel e upon an axle bearing
in or attached to the casing or box, the periphery of which wheel as it
revolves runs in contact with a pinion f fixed on the end of the axle of the
fan wheel, and by the friction of contact between the two surfaces the wheel'e
causes the fan b to revolve with a considerably increased velocity. The
.wheel e is turned by a winch or handle, and to prevent noise I cover its
periphery with a band of leather attached by cement or by any other.convenient
means; and in order to accommodate any slight irregularity in the periphery
of the wheel e, I support the end of the axle of the wheel b in a vertical
lever
9, which is pressed forward by a spring h, and by these means the pinion
f is at all times kept in contact with the periphery of the driving c. Though
I have purposed to drive the fan by friction, I do not intend to confine myself
to that mode, as a toothed wheel and pinion f may be employed in the
'same situations, or the fan may be driven by a band and pulley. I have
shewn a wheel b with radial fans which I consider best suited to the purpose;
.but I do not intend to confine myself to radial fans as spiral or oblique fans
might be found to answer the same purpose.
In witness whereof, I, the said Alexander Clark, have hereunto set my
hand and seal, this Eleventh day of July, in the year of our Lord One
thousand eight hundred and thirty-three.
ALEX. (L.S.) CLARK.

page_text: AND BE IT REMEMBERED, that on the Eleventh day of July, in the
fourth year of the reign of His present Majesty King William the Fourth,
the said Alexander Clark came before our said Lord the King in His
Chancery, and acknowledged the Instrument aforesaid, and all and every thing
therein contained and specified, in form above written. And also the Instru-
ment aforesaid was stamped according to the tenor of the Statute made in the
fifty-fifth year of the reign of His late Majesty King George the Third.
Inrolled the Fifteenth day of July, One thousand eight hundred and
thirty-three.