CERTAIN IMPROVEMENTS IN MILLS OR MACHINERY TO BE OPERATED UPON BY WIND, AND APPLICABLE TO THE GRINDING OF CORN AND OTHER PURPOSES
Year: 1832

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BURLINGHAM, of Old Buckenham, near Attleborough, in the County of Norfolk,
Miller, 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 Eighth day of November, in the third year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
John Burlingham, His especial licence, full power, sole privilege and autho-
rity, that I, the said John Burlingham, my exors, adñiors, and assigns, and
such others as I, the said John Burlingham, 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 "CERTAIN IMPROVEMENTS IN MILLS OR
MACHINERY TO BE OPERATED UPON BY WIND, AND APPLICABLE TO THE GRINDING OF
CORN AND OTHER PURPOSES;" in which said Letters Patent there is contained
a proviso that I, the said John Burlingham, shall cause a particular descrip--
tion of the nature of my said Invention, and in what manner the same is to
be performed, to be inrolled in His said Majesty's High Court of Chancery
within two calendar months next and immediately after the date of the said
in part recited Letters Patent, as in and by the same, reference being there-
unto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
John Burlingham, do hereby declare that my improvements consist in
centre of motion, having striking tackle as directed for No. 1. The ring or

page_text: applying a contrivance for more effectually intercepting the wind, so as to
gain greater power, and also obtain a greater and more effectual equalization
of power and uniformity of motion than has hitherto been attained by any of
the methods already in use. For this purpose I cause the space or area
usually described by the revolution of windmill sails to be constructed and
appropriated to the reception of any convenient number of vanes or sails, so
that they form nearly one continued circle, with their centres pointing to or
fixed at any angle or excentricity to the common centre of motion, reserving
to myself the right of appropriating or using all or some part of the said area
or circle. I also enclose the said area or circle at its periphery with a ring or
pologonal figure of any convenient width, with its plane at right angles to the
plane described by the motion of the vanes or sails, so that such ring or
pologonal figure tend to confine or partially condense the wind, and cause it
to pass through the interstices between the vanes or sails, and render the same
more powerful than if allowed to escape, in the usual way, at the ends or
points of the sail, by which means also I am enabled to allow a greater degree
of weather at the point of the sail or periphery of the circle or pologonal figure,
so as thereby to gain an additional increase of power.
I also apply the above contrivances to windmills now in use, so that they
derive the aforesaid benefits in proportion to their width and capacity for
receiving the same; and I likewise appropriate the space usually vacant
between the sails of windmills to the reception of vanes, as before described,
for my improved vanes or sails, and I likewise enclose the same with a ring
or pologonal figure.
To produce a more effectual equalization of power and uniformity of
motion, I cause the vanes to turn from the wind, or strike on pivots or centres
which are acted upon by an apparatus or tackle delineated in the Drawing
Nos. 3 and 4.
In describing the Drawings the same letters refer to the same parts or
members, although seen in different positions.
The Drawing No. 1, Figure 1, exhibits my improved vanes or sails enclosed
in framework, twenty-four in number, each turning on pivots or centres, and
retained or kept in their working position, and struck or turned from the wind
by the apparatus delineated in the Drawings No. 3 and 4, but omitted in this
for the sake of perspicuity. The ring or pologonal figure is seen at the
periphery, relieved by the shadowing, and delineated in section, M and N,
Fig. 2.
It is constructed of any convenient materials, in light framework,
usually covered with canvass. No. 2 shows the sails constructed in twelve
compartments filled with vanes, with their centres pointing to the common

page_text: pologonal figure is shewn in relief by the shadowing, being the same width in
this instance as shewn in section at M and N, No. 1, Fig. 2.
No. 3 and 4 shews my improved equalizing or striking tackle, whereof the
windshaft is exhibited in section, Fig. 1, No. 3, having two rods through and
concentrical with it and each other. These rods are each fitted with cross
heads A and B, connected to crank levers C, Fig. 2, No. 3, and C, C, C, C,
No. 4, whose opposite arm D, Fig. 2, No. 3, and D, D, D, D, No. 4, has a
connecting rod conveying motion to rings or sliders E, Fig. 2, No. 3, and
E, E, E, E, No. 4. These rings or sliders are connected with the levers of
the vanes by pins L, L, L, L, L, L, No. 4. One of these vanes and its lever
is shewn at F, Fig. 2, No. 3. It is evident that a repetition of this apparatus
will complete the motion of the whole set of sails or vanes. The tail or
opposite ends of rods have onions or collars G, G, No. 3, Fig. 1, and are
actuated or propelled in the usual way.
It is obvious that the connecting apparatus and striking or equalizing.
tackle may be constructed in a variety of ways; but I prefer the above-
described, although I do not confine myself thereto.
H, Fig. 2, No. 3, shews a vane in section. The dotted lines represent the
position of the tackle when the vanes are struck or turned from the wind.
I, J, K, represent the stocks and clamps which connect the sails or vanes to the
windshaft, but are not claimed here as new Inventions; neither do I claim the
internal striking rod, whose cross head is marked A, Fig. 1, No. 3, as a new
Invention, only when used in conjunction with the outer one marked B.
In witness whereof, I, the said John Burlingham, have hereunto set my
hand and seal, this Second day of January, in the year of our Lord
One thousand night hundred and thirto three