IMPROVED APPARATUS FOR EXHAUSTING AND DRIVING ATMO- SPHERIC AIR AND OTHER GASES, AND FOR GIVING MOTION TO OTHER MACHINERY
Year: 1849

page_text: TO ALL TO WHOM THESE PRESENTS SHALL, COME, I, ALEXANDER
HAIG, of Smith Street, Stepney, in the County of Middlesex, Engineer, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of
Great Britain and Ireland, bearing date at Westminster, the Sixth day of
September, One thousand eight hundred and forty-nine, in the thirteenth
year of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Alexander Haig, my exors, adñiors, and assigns, Her
especial licence, full power, sole privilege and authority, that I, the said
Alexander Haig, my exors, adiñiors, and assigns, and such others as I, the
said Alexander Haig, my exors, adñiors, 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 "IMPROVED APPARATUS FOR EXHAUSTING AND DRIVING ATMO-
SPHERIC AIR AND OTHER GASES, AND FOR GIVING MOTION TO OTHER MACHINERY;"
in which said Letters Patent is contained a proviso that I, the said Alexander
Haig, should cause a particular description of the nature of my said
Invention, and in what manner the same is to be performed, by an instru-
ment in writing under my hand and seal, to be inrolled in, Her said Majesty's

page_text: 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 bad, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Alexander Haig, do hereby declare that the nature of my said Invention,
and the manner in which the same is to be performed, are fully described
and ascertained in and by the following statement thereof, reference being
had to the Drawings hereunto annexed, and to the figures and letters marked
thereon, that is to say:-
My Invention consists of improved apparatus for giving motion to a fan
or rotatory propeller suitable for exhausting and driving air and other gases,
and such improved apparatus is also suitable for giving motion to other
machinery where friction driving is required. And in order that my Invention
may be most fully understood and readily carried into effect, I will proceed
to describe the means pursued by me.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side view; Figure 2, a front view; Figure 3 is an elevation
in section; and Figure 4, detail views of some of the parts. In each of these
Figures the same letters are used to indicate the same parts; a being the
main or driving axis, which is put in motion by the bandle b. On this axis
is fixed the cog wheel c, which takes into and gives motion to the pinion d,
fixed on the axis e, and on this axis is fixed the cylinder driving surface f
which in its turn, by its interior surface, gives motion to the axis of the fan
or rotatory propeller in the case g, by acting on a cylinder or roller h, fixed
on the axis i of the fan or propeller, which fan or propeller may be of any
of the ordinary constructions. And it should be stated, that so far as the
fan or propeller and its case are concerned, they are not new, my Invention
only consisting of the means of giving motion to the fan or propeller
employed, and it is the combination of the parts f and h (and means of
keeping them in contact) with the axis of an exhausting and driving apparatus
which constitutes the peculiarity of my Invention. The cylinder f, as before
stated, acts by its inner surface on the cylinder h, they being kept in contact
by any convenient means, but I prefer the arrangement shown. j is the frame
which carries the cylinder.f, the frame being capable of movement up or
down by the screw k, and is guided by the pins ¹ passing through slots in
the main framing, there being slots in which the axes of the cog wheel
and pinion move up or down freely. The cylinder or roller h should be
coated or have a surface which will tend to obtain friction between it and

page_text: the inner surface of the cylinder f. I prefer for this purpose to compose
the surface of the roller or cylinder h of a series of discs of paper confined
between end plates as shewn, but this may be varied. I would state that,
although I have shown the motion from the main axis to be transmitted to the
axis of the cylinder f by means of a cog wheel and pinion, I do not confine
myself thereto, as motion may be communicated to that axis by other means.
And I would state that it will be evident to a mechanic that the apparatus
f and h, with means of retaining them in contact, may be combined with
and give motion to the axis of other machinery than that for exhausting
and driving air and other gases.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that what I claim is, the
combining parts f, h, i, and means of keeping them in contact for giving
motion to a fan or rotatory propeller for exhausting and driving air and
other gases, and also for giving motion to other machinery.
In witness whereof, I, the said Alexander Haig, have hereunto set.my
hand and seal, this Twelvth day of November, in the year of our
Lord One thousand eight hundred and forty-nine.
Enrolled the Sixth day of March, in the year of our Lord One
thousand eight hundred and fifty.