AN IMPROVED MODE OF MANUFACTURING CYLINDERS
Year: 1862

page_text: LETTERS PATENT to William Clissold, of Dudbridge, in the County of
Gloucester, Engineer, for the Invention of "AN IMPROVED MODE OF
MANUFACTURING CYLINDERS."
Scaled the 21st January 1863, and dated the 24th July 1862.
PROVISIONAL SPECIFICATION left by the said William Clissold at the
Office of the Commissioners of Patents, with his Petition; on the 24th
July 1862.
I, WILLIAM CLISSOLD, of Dudbridge, in the County of Gloucester, Engineer,
do hereby declare the nature of the said Invention for "AN IMPROVED MODE
OP MANUFACTURING CYLINDERS," to be as follows:-
It has long been the object of carding engine makers to produce cylinders
possessing both lightness and truth, and that will not be liable to warp or lose
their true cylindrical shape. In order to attain this end I propose to construct
compound cylinders of wood and iron in the following manner :-I provido a
series of light cast-iron wheels with plain peripheries, which wheels I key upon
a common shaft at equal distances apart. Over them I place a series of
staves or strips of wood parallel with the shaft, setting them close together,
and pinning them to the wheel, so as to form a drum. Upon this covering of
staves (which may, if thought desirable, be "trued" up in a lathe,) I place at
right angles to the joints a covering of segment pieces of wood, which are laid
close together, and so arranged as to break joint with each other and with the
staves below them. The segments are attached to the drum by means of
brads, assisted by glue or other cement. The grain of the wood forming the
segments crosses the grain of the staves, and thus the tendency of wood to
"give" will be effectually counteracted. Cylinders constructed in this manner

page_text: may be turned true in a lathe, and covered with wire cloth, as usual in
making carding cylinders, or they may be applied to any other desired
purpose.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Clissold in the Great Seal Patent Office on
the 24th January 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
CLISSOLD, of Dudbridge, in the County of Gloucester, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of July, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said William Clissold, Her special license that I, the said William
Clissold, my executors, administrators, and assigns, or such others as I, the
said William Clissold, my executors, administrators, and assigns, should at
any time agree with, and no others; from time to time and at all times there-
after 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 "AN IMPROVED
MODE OF MANUFACTURING CYLINDERS," upon the condition (amongst others) that
I, the said William Clissold, by an instrument in writing under my band and
seal should particularly describe and ascertain the nature of the said Inven-
tion, 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 immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Clissold, do hereby declaro
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Drawing hereunto annexed,
and to the letters and figures marked thereon (that is to say) :-
:-
It has long been the object of carding engine makers to produce cylinders
possessing both lightness and truth, and that will not be liable to warp or loso
their true cylindrical shape, but great difficulties have hitherto attended the
attainment of this end.
Now, my Invention consists in obtaining permanently true and at the same
time light and economic cylinders by constructing them of a combination of

page_text: wood and iron in the manner shewn in the accompanying Drawing, where
Fig. 1 is a side view of a cylinder, left unfinished, the better to explain its
structure; Fig. 2 is a longitudinal section, and Fig. 3 a cross section of the
same.
In carrying out my Invention, I provide series of light cast-iron wheels
a, a, a, having plain peripheries, which wheels I key upon a common shaft b
at equal distances apart. Over these wheels I place a series of staves or strips
of well-seasoned wood c, c, c, parallel with the shaft, setting them close
together, and pinning them to the wheels a, so as to form a drum. Upon
this covering of staves (which may, if thought desirable, be first trued up in a
lathe,) I place at right angles to the joints a covering of segment pieces of
well-seasoned wood d, d, d, which may either be cut or bent to the segmental
shape by any well-known or suitable machinery or process, and these I lay
close together, so arranging them that they shall break joint with each other
and with the staves below them. The segments d, d, d, I attach to the drum
by means of brads, assisted by glue or other cement. The grain of the wood
forming the segments crosses the grain of the staves, and thus the tendency of
either of the thicknesses of wood to give under the variations of temperature
will be effectually counteracted. Cylinders of any desired size may be con-
structed in this manner, and when turned true in a latho will be ready to
receive a covering of wire cloth as usual in making the drums, and working
and stripping rollers of carding engines, or the cylinders may be applied to any
other purpose for which they may be found applicable.
Having now set forth the nature of my Invention of "An Improved Modo
of Manufacturing Cylinders, and explained the manner of carrying the same
into effect, I wish it to be understood that under the above in part recited
Letters Patent I claim, the manufacture of compound cylinders, as above
described, or any mere modification thereof.
In witness whereof, I, the said William Clissold, have hereunto set my
hand and seal, the Twenty-second day of January, in the year of our
Lord One thousand eight hundred and sixty-three.
Witness,
ALFRED SMITH,
of Dudbridge, n' Stroud.
WILLIAM CLISSOLD. (L.S.)