A MILL FOR TEARING, CHRUSHING, AND PREPARING OAK BARK TO BE USED BY TANNERS IN THE PROCESS OF TANNING OF HIDES
Year: 1805

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
CHAPMAN, of Witham, in Holderness, in the County of York, Thiaslung
Machine Makeı, send greeting
WHEREAS by His Majesty's Letters Patent under the Great Seal of
Great Butain, bearing date at Westminster, the Twenty-ninth day of July
now last past, after reciting that I, the said Thomas Chapman, had, by my
petition, humbly represented to IIis said Majesty that I had, after much
labour, study, and expence, found out and invented "A MILL FOR TEARING,
CHRUSHING, AND PREPARING OAK BARK TO BE USED BY TANNERS IN THE PROCESS
OF TANNING OF HIDES," that I was the first and true Inventor thereof, and
that the same had never been made or used by any other person or persons, to
the best of my knowledge and belief, I therefore most humbly prayed that
His said Majesty would be graciously pleased to giant unto me, my exois,
admois, and assigns, His Royal Letters Patent, under the Great Seal of Great
Britain, for the sole use, benefit, and advantage of any said Invention, withi
that part of His said Majesty's United Kingdom of Great Britain and lieland
called England, and also within Wales and the Town of Berwick-upon-Tweed,
to the term of fourteen years, according to the Statute in that case made and
provided, and further reciting, that is said Majesty, being willing to give
encouragement to all arts and inventions which might be for the public good,
was graciously pleased to condescend to my request. It is thereby made known
that is said Majesty, of His special grace, contain knowledge, and meer
motion, by is said Letters Patent, for Him, is hens and successors, did
give and giant unto me, iny cois, adiñiors, and assigns, is especial license,

page_text: full power, sole puvilege and authority, that I, my exois, admois, and assigns,
and every of us, by myself and themselves, or by myself and my and their
deputy or deputies, servants or agents, or such others as I, my exors, admois,
or assigns, should at any time agice with, and no others, from time to time and
at all times the cafter during the term of years in the said Letters Patent
expressed, should and lawfully might make, use, and exercise my said Invention
within that part of His said Majesty's United Kingdom of Great Britain and
Ireland called England, Пis Dominion of Wales, and Town of Berwick upon-
Tweed, in such manner as to me, my exois, admois, or assigns, or any of them,
should in my or their discretions seem meet, and that I, my exois, aditions,
and assigns, should and lawfully might have and enjoy the whole profit, benefit,
commodity, and advantage from time to time coming, growing, accruing, and
arising by reason of the said Invention, for and during the term of years in the
said Letters Patent mentioned; to have, hold, exercise, and enjoy the said
license, powers, privileges, and advantages therein-before granted or mentioned
to be granted unto me, my exors, adñiors, and assigns, for and during and
unto the full end and term of fourteen years from the date of the said Letters
Patent, next and immediately ensuing, and fully to be complete and ended,
according to the Statute in such case made and provided, and it is in and by
the said Letters Patent, amongst other things, provided, that if I should not
particularly describe the nature of my said Invention, and in what manne
the same is to be performed, by an instrument in writing under my hand
aud seal, and cause the same to be inrolled in His said Majesty's High Court
of Chancery within one calendar month next and immediately after the date
of His said Majesty's said Letters Patent, that then the same Letters Patent,
and all liberties and advantages whatsoever thereby granted, should utterly
cease, determine, and become void, as in and by the said Letters Patent, upon
reference being thereunto had, will more fully appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Chapman, do hereby, and by the plans or Diawings hereunto annexed,
particularly describe and ascertain the nature of my said Invention, and in
what manner the same is to be performed, as follows, that is to say.-
That the mill may be worked by steam, wind, water, or by one or more
horses, and that the rag wheels may be made of any kind of metal most suitable
And the description of the annexed plans, which are for a mill to be worked
by a horse or horses, is as follows:-
Figure 1: A is the horse wheel; B, the tumbling shaft, which unites with
the banel gudgeon E; C is the frame to contain the thrce barrels D, E, F ;
Dis the spike roller, which keeps the ag banel E clean; E is the rag barrel,

page_text: with twenty rows of plates, or more, according to the power required, F is
the small barrel, which turns the contrary way to the barrel E, and gathers
the bark, and likewise holds it fast by having the points upwards, whilst the
bairel E is tearing it to pieces; the barrel E goes round considerably quicker
than the banel F, G is a fly wheel, which is turned from a wheel fixed upon
the gudgeon of the barrel E, to keep the mill in a steady motion; II is the
cylinder to separate the ground or torn bark, as more particularly mentioned
in the description of Figure 2, herein-after given. I, a basket, into which
the bark, when torn, is supposed to fall, h, h, are two screws to regulate the
banel F, and make it gund finer or coarser, viz, to grind finer, turn the
Screws to the night hand, and to grind coarser, the reverse way; 2 is a sciew to
regulate the bottom plate f, in Figure 3, for the like purpose, by turning the
screw in like manner as the screws h, h.
Figure 2 shows a side view of the grinding part, and likewise of the
cylinder A. with the spout B, which spout conveys the bark, when torn, into
the cylinder A; C is a bin to receive the finest dust from the cylinder; D, a
bin to receive the coarser dust, usually called hand dust; E is the basket to
receive the bark when toin, but a bin or other contrivance for receiving the
bark may be substituted for the basket.
Figure 3 shews the wheels and the grinding plate, and how they work;
a, the spike roller which cleans the banel; b, b, is the large banel, and c, the
small one, d, the regulating screw for the small banel c,; e, the regulating
screw for the plate f; f is the gunding plate, which takes the bark after it
has passed the banels b and c; and g is the spout which conveys the bark
into the cylinder A in Figure 2.
Figure 4 shews the fiont edge of the bariels, and how they work one within
the other as at a; they may be set so as to grund as fine or as coarse as the
workman shall chuse.
In witness whereof, I, the said Thomas Chapman, have hereunto set my
band and seal, the Twentieth day of August, in the forty-fifth year of
the reign of our Sovereign Lord George the Third, by the grace of
God of the United Kingdom of Great Britain and Ireland King,
Defender of the Faith, and in the year of our Lord One thousand eight
Signed and scaled by the said Thomas
Chapman, in the presence of us,
RP FARDIN INDO.
JOHN BROCK.
THOMAS (Ls.) CHAPMAN.

page_text: AND BE IT REMEMBERED, that on the Twenty-fourth day of August,
in the year of our Lord 1805, the aforesaid Thomas Chapman came before
our said Lord the King in Ilis Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above witten. And also the Specification aforesaid was stampt according
to the tenor of the Statute made for that purpose.
Inrolled the Twenty-seventh day of August, in the year of our Lord One
thousand eight hundred and five.