CERTAIN MACHINERY INVENTED BY THE BAID ARCHIBALD BLAIR, AND TO BE VARIOUSLY CONSTRUCTED, FOR PRESSING ALL SORTS OF SUBSTANCES TO WHICH IT MAY BE FOUND APPLICABLE
Year: 1802

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, ARCHIBALD
BLAIR, of Bayford, in the County Herts, Esquire, sendeth greeting.
WHEREAS His present Majesty King George the Third, by His Royal
Letters Patent under the Great Seal of the United Kingdom of Great Britain
and Ireland, bearing date at Westminster, the Thirty-first day of May now
last past, hath given and granted unto the said Archibald Blair, his exe-
cutors, administrators, and assigns, especial licence, full power, sole privi-
lege and authority, to make and vend "CERTAIN MACHINERY INVENTED BY THE
BAID ARCHIBALD BLAIR, AND TO BE VARIOUSLY CONSTRUCTED, FOR PRESSING ALL
SORTS OF SUBSTANCES TO WHICH IT MAY BE FOUND APPLICABLE," within that part of
His Majesty's said United Kingdom called England, His Dominion of Wales,
and Town of Berwick-upon-Tweed, and also in all His Majesty's Islands,
Colonies, and Plantations abroad, for the term of fourteen years from the
date of the said Letters Patent, and to have and enjoy the full benefit and
sole use and exercise of the said Invention during the term aforesaid; subject
nevertheless to a proviso or condition in the said Letters Patent contained,
that if the said Archibald Blair should not particularly describe and ascer
tain the nature of his said Invention, and in what manner the same is to be
performed, by an instrument in writing under his hand and seal, and cause

page_text: the same to be inrolled in the High Court of Chancery within six calenda
months next ensuing the date of the said Letters Patent, then the same
Letters Patent, and all liberties and advantages whatsoever thereby granted
should utterly cease, determine, and be void.
NOW KNOW YE, that the said Archibald Blair, in compliance with and
performance of the said condition of the said Letters Patent, doth by this
Instrument in writing under his hand and seal, particularly describe and
ascertain the nature of his said Invention, and in what manner the same is
to be performed, as well by the several Figures or Delineations of machinery
contained in the margin of these Presents as by the description or explanation
thereof herein-after also set forth (that is to say):-
The principle of the said Invention is the conjunct application of a single
or double lever with a rod, by which the alternate motions of the lever are
converted into that of a continued line, and may be applied in a vertical,
horizontal, or oblique position in all cases where force may be wanted. Draw-
ings of the said Invention as applied to a cotton press in a vertical position,
and a sketch of its application to a pushing or drawing engine, are inserted
in the margin of these Presents, from which it's very extensive use may be
generalized. The various parts will be constructed of appropriate metals or
timber, and the dimensions and powers may be varied at pleasure.
Figure 1st, an elevation of an engine for pressing cotton. A, lever with a
groove to receive the rod, as represented in Figure 3d; B, rod, with a longi-
tudinal groove for the fulcrum and holes for the plugs; C, frame of the
engine, which, in this case, is of wrought iron; D, beams on the ground
floor, to which the engine is fixed; E, second floor of the building; F, ful-
crum of wrought iron and steel; G, lever fulcrum piece of cast iron, the
lower side of which is represented in Figure 3d; H, frame fulcrum piece of
east iron; I, plugs, of wrought iron and steel, by which the rod is moved by
the alternate motions of the lever; L, sides of engine, of plank perforated;
M, doors for taking out the bales when pressed and retained; N, blocks
between which the bales are pressed. The face of the lower one is repre-
sented in Figure 2. K, screw hoops to connect the frame of the engine, and
to which the hinges of the doors are fixed; O, pieces to retain the rod in its
due position, bolted to the frame, and represented by Figures 7 and 8.
Figure 2d, a ground plan of the engine, with the lower block and a scale 5
of feet; Figure 3d, lower side of lever; Figures 4th and 5th, a sketch of a
pushing or drawing engine; Figure 6th, rod plug; Figure 7th, upper piece
for retaining the rod in it's due position, bolted to the frame; Figure 8th, one