A COMBINATION OF APPARATUS FOR EXTRACT- ING A TANNING MATTER FROM BARK AND OTHER SUBSTANCES CONTAINING SUCH TANNING MATTER
Year: 1820

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
KENDRICK, of Birmingham, in the County of Warwick, Chemist, 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 Fifth day of December, in the first year of His reign,
give and grant unto me, the said William Kendrick, my exors, admors, and
assigns, His especial licence, full power, sole priviledge and authority, that
I, the said William Kendrick, 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 "A COMBINATION OF APPARATUS FOR EXTRACT-
ING A TANNING MATTER FROM BARK AND OTHER SUBSTANCES CONTAINING
SUCH TANNING MATTER;" in which said Letters Patent there is contained.
a proviso that if I, the said William Kendrick, 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 four calendar months next and immediately after
the date of the said Letters Patent, that then the said Letters Patent, and

page_text: all liberties and advantages whatsoever thereby granted, shall utterly cease,
determine, and become void, as in and by, the same, relation being thereunto
had, may more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
William Kendrick, do hereby declare that the nature of my said Invention,
and the manner in which the same is to be performed, are particularly
described and ascertained in the following description thereof (that is to
say):
My process consists in extracting from oak bark, sumack; or from the
waste of oak bark or sumack, or other vegetable substances, the tanning
matter which they contain in a more advantageous manner than has
hitherto been practised. My process is as follows:-I expose to the action
of steam or water heated considerably above the common boiling point of
water the fresh or waste oak bark, sumack, or other materials from
which the tanning matteris to be obtained. The apparatus which I prefer
consists of a boiler of any suitable size or form, capable of generating steam
of a certain elasticity, and capable of conveying the steam in the same state
of elasticity into one or more vessel or vessels containing the oak bark or
substance from which the tanning matter is to be extracted. The elasticity
of the steam applied for extracting the tanning matter from the materials
operated upon must be such that its pressure is equal to at least from eight
to twelve pounds upon the cubit inch, but the pressure may be varied according
to circumstances. This vessel or vessels may be made of wood or lead, or
iron lined with lead, or of any other approved material or materials, and
the tighter said vessel or vessels are made the more productive. A safety
valve is put in the lid or any other part of the vessel as well as in the boiler.
To the pipe or pipes which conveys the steam from the boiler is connected a
perforated pipe or pipes, or chamber of any approved form, which I attach to
the top, side, or bottom, or any other part of the vessel or vessels containing
the bark, and by means of the perforation the steam acts with more force upon the
bark, sumack, &c., than it otherwise would do. And further to facilitate the
operation I put warm or cold water to the bark, &c., in such proportions from
one quart or more or less to a pound, as may be thought proper, according to
the strength of the liquor I want to draw.
In witness whereof, I, the said William Kendrick, have hereunto set my
hand and seal, this Thirty-first day of March, in the year of our Lord
One thousand eight hundred and twenty-one.
WILLIAM (L.S.) KENDRICK.

page_text: AND BE IT REMEMBERED, that on the Thirty-first day of March, in
the year of our Lord 1821, the aforesaid William Kendrick came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
5 above written. And also the Specification aforesaid was stampt according to
the tenor of the Statute made for that purpose.
Inrolled the Second day of April in the voor of our
Inrolled the Second day of April, in the your of our Lord One thousand
eight hundred and twenty-one.