AN IMPROVEMENT IN DRYING AND FINISHING OF PAPER BY CERTAIN MEANS HITHERTO UNUSED FOR THAT PURPOSE
Year: 1820

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
BONSOR CROMPTON, of Farnworth, in the County of Lancaster; Paper Manu-
facturer, send greeting.
WHEREAS His most Excellent Majesty King George the Fourth did,. by
His Letters Patent under the Great Seal of that part of the United Kingdom
of Great Britain and Ireland, called England, bearing date. at Westminster,
the First day of November, in the first year of His reign, give and grant, unto
me, the said Thomas Bonsor Crompton, my exors, admors, and assigns; His
especial licence, full power, sole privilege and authority, that I, the said
Thomas Bonsor Crompton, my exors, admors, and assigns, during the term of
years. therein mentioned, should and lawfully might make; use, exercise, and
vend, within England, Wales, and the Town of Berwick-upon-Tweed, my
Invention of "AN IMPROVEMENT IN DRYING AND FINISHING OF PAPER BY CERTAIN
MEANS HITHERTO UNUSED FOR THAT PURPOSE;" in which said Letters Patent there
is contained a proviso that if I, the said Thomas Bonsor Crompton, shall not
particularly describe and ascertain the nature of my said Invention, and. in
what manner the same is to be performed; by an instrument in writing,. under
my hand and seal, and 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 Letters Patent, that then the said Letters Patent, and all
liberties and advantages whatsoever thereby granted, shall utterly cease, deter-
mine, and become void, as in and by the same, relation being thereunto had,
will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Bonsor Cromptou, do hereby declare that the nature of my said
Invention, and the manner in which the same is to be performed, are par-
ticularly described and ascertained in and by the Drawings hereunto annexed,
and the following description thereof (that is to say) :-
:-
The Invention I claim consists in conducting the paper by means of cloth or
cloths against the heated cylinders, which cloth may be made of any suitable
material; but I prefer it to be made of linen, warp, and woollen weft, which
cloth is shewn in the Drawing by the blue lines in Fig. I., and the paper
shewn by the red lines in the same Figure, and regulating the rollers for the
purpose of preventing the paper from creasing by expansion or separating by
contraction. I claim further the application of a pair of shears to cut the
paper off in suitable lengths as it comes from the machine or rollers.
DESCRIPTION OF THE DRAWING.
Figure 1. is a longitudinal section, and Figure II. a plan of a machine
applied to the purpose of drying and finishing paper by steam. A, A, A, A, A, A,
are cylinders driven by spur geer, one wheel being fixed upon the axis of each,
and having others intervening to connect the whole. The power for driving
them to be attached to any of the above wheels, as represented in the dotted
circles B, B. C, C, C, C, C, C, are the centers of cylinders, having apertures
receiving the valves D, D, D, D, D, D, Figure II., communicating the steam
from the pipe into the cylinders, where it becomes condensed, and is carried off
by the pipe a 2, in Figure II., and D, D, &c. Figure 1. E, E, E, E, E,
are rollers attached to the first cylinder, conducting endless cloths, as represented
on each by the blue line, Figure 1, covering the whole of the rollers and nearly
the cylinders in Fig. 2, carrying along with it the paper, embracing the
periphery of the cylinder, until it arrives at the rollers F, F, when the paper
leaves the cloth and continues forward to G, G, &c., the rollers of the second
cylinders, and so forth to any number of cylinders that may be found requisite.
H, H, &c. are screws, with handles acting upon the pivots of rollers I, I, &c.,
for the purpose of tighting cloth, to prevent the forcible separation of the paper
by expansion, or the injurious effects frequently produced by rapid contraction.
Fig. III., IV., V., are plan and section of a cutter attached to the extremity
of the machine to cut the paper as delivered into sheets of any given size
without loss. a, a fixed steel blade; b, the moveable blade; C, C, the.con-
necting links; e, e, the tappited wheel made to act against the link or lever f,
and bring down. the blade. 6 to cut off the paper. The wheel makes one
revolution for every sheet of paper. d, a steel spring sufficient to lift up the

page_text: blade 6, instantaneous. The speed of the tappeted wheel is regulated according
to the length of the sheet required. Although I have specified with reference
to the accompanying Drawing, yet I consider any method of conveying paper
over heated rollers or plates, for the purpose of drying paper by means of a
conductor or conductors, as well as the application of the shears, to be an
infringement on my Patent.
In witness whereof, I, the said Thomas Bonsor Crompton, have hereunto
set my hand and seal, this Twenty-sixth day of April, in the year of our
Lord One thousand eight hundred and twenty-one