IMPROVEMENTS IN MACHINERY FOR MANU- PACTURING PAPER PULP
Year: 1855

page_text: LETTERS PATENT to James Park, of Bury, in the County of Lancaster,
Engineer, for the Invention of "IMPROVEMENTS IN MACHINERY FOR MANU-
PACTURING PAPER PULP."
Sealed the 9th November 1855, and dated the 24th May 1855.
PROVISIONAL SPECIFICATION left by the said James Park at the Office
of the Commissioners of Patents, with his Petition, on the 24th May
1855.
I, JAMES PARK, of Bury, in the County of Lancaster, Engineer, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN MACHINERY FOR
MANUFACTURING PAPER PULP" to be as follows:-
The nature of my said Invention consists in the combination of a steam
engine with a rag engine. The rag engine is well known as part of the
machinery used in the manufacture of paper, it being used in the preparation
of the pulp of which paper is made. In the use of this engine it is very
desireable to be enabled to vary and regulate the speed of it from time to time,
according to the nature of the material operated upon, and the progress of
the operation upon the material to be converted into pulp. To enable me to
effect this object, I connect to the shaft of the roll or cylinder of the rag
engine a steam engine of just sufficient power to work the rag engine, which
I construct in the ordinary manner.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Park in the Great Seal Patent Office on the
22nd November 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
PARK, of Bury, in the County of Lancaster, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
l'atent, bearing date the Twenty-fourth day of May, in the year of our Lord
One thousand eight hundred and fifty-five; in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James Park, Her spécial license that I, the said James Park, my
executors, administrators, and assigns, or such others as I, the said James
Park, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MACHINERY FOR
MANUFACTURING PAPER PULP," upon the condition (amongst others) that I, the
said James Park, by an instrument in writing under my hand and seal, should
particularly describe and ascertain the nature of the said Invention, and in
what manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said James Park, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
Specification thereof, reference being had to the accompanying Drawing (that
is to say):-
The nature of my Invention consists in the combination of a steam engine
with a rag engine, whereby the speed of the rag engine may be varied and
regulated according to the nature of the material operated upon, and the
progress of the operation upon the material to be converted into pulp. I
have in the said Drawing given Figures for shewing how my Invention may be
carried into effect, similar parts in each view being marked with similar letters
of reference.
Fig. 1 is an elevation of a steam engine combined with a rag engine, and
Fig. 2 a plan view of the same. a is the cistern; and 6, the roll or cylinder of
the rag engine, which, as is well known to paper manufacturers, is a machine
used in the preparation of pulp. The roll or cylinder b is fixed on the shaft c,

page_text: which is supported at one end in the adjustable bearing d, and at the other end
in the fixed bearing e, in the usual manner. To one end of the shaft c is fixed
the fly wheel f, from which projects the crank pin g, and to this crank pin is
connected the outer end of the connecting rod h, which receives motion from
the piston rod i and piston working in the cylinder k. I prefer to attach the
cylinder k on the bracket m, which is either cast with or bolted to the cistern
of the rag engine, so as to obviate the necessity of a separate foundation for
the engine. The valve for the steam cylinder is contained in the valve box n,
and it is worked by the excentric o, on the shaft c and connecting rod p. The
steam is conveyed from the steam boiler to the valve box n through the pipe q,
which is provided with a slide or other valve r, by means whereof the
attendant can regulate the admission of the steam, and consequently the
velocity of the engine, according to the condition and quality of the material
operated upon and the progress of the operation. The mode of constructing
the steam engine may be varied, provided the motion be communicated directly
to the shaft of the roll or cylinder of the rag engine, the object of my Inven-
tion being to dispense with the gearing usually employed for driving the rag
engine, and to enable the attendant to vary its speed independently of the other
machines in the mill.
Having thus described the nature of my Invention, and the manner in which
it may be performed, I declare that I do not claim the parts or elements of
which my combination or improved engine is composed; but that what I claim
as of my Invention is, the combination of a steam engine with a rag engine,
so as to cause motion to be communicated directly from the steam engine to
the shaft of the rag engine, as above described.
In witness whereof, I, the said James Park, have hereunto set my
hand and seal, this Twentieth day of November, in the year of our
Lord One thousand eight hundred and fifty-five.
Witness,
-H. B. BARLOW,
Manchester.
JAMES PARK. (L.S.)