IMPROVEMENTS IN DRYING CYLINDERS, AND IN THE METHOD OF RE- MOVING WATER AND IMPURITIES THEREFROM:
Year: 1873

page_text: LETTERS PATENT to Benjamin Toulson, of the Priory Tin and Copper
Works, Pendleton, in the County of Lancaster, for the Invention
of "IMPROVEMENTS IN DRYING CYLINDERS, AND IN THE METHOD OF RE-
MOVING WATER AND IMPURITIES THEREFROM:
"
Sealed the 24th February 1874, and dated the 29th August 1873.
PROVISIONAL SPECIFICATION left by the said Benjamin Toulson at
the Office of the Commissioners of Patents, with his Petition, on
the 29th August 1873.
15
I, BENJAMIN TOULSON, of the Priory Tin and Copper Works, Pen-
dleton, in the County of Lancaster, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN DRYING CYLINDERS, AND IN THE
METHOD OF REMOVING WATER AND IMPURITIES THEREFROM," to be as
follows:-
My Invention relates to the steam heated cylinders of drying
machines, such, for example, as are employed in the drying of woven.
fabrics.

page_text: In such cylinders as constructed and fitted previously to my said
Invention the internal blocks or strengthening rings have tended to
retain impurities or solid or semi-solid matters within the cylinder, and
impurities or matters have also lodged in the corners of the discharge
ducts or troughs. To remedy these defects I, in the first place, employ
two or more blocks or portions of rings, each of which is less than an
entire ring, in place of each complete block or ring as hitherto formed;
and I fix them so that the water and said matters can get past their
ends to the collecting troughs. When two of the improved blocks are
used each block is made about two-thirds of a complete ring, and the
two blocks are fixed a distance apart, and on opposite sides of the axial
line, one of the collecting troughs being by preference extended to the
furthest block. In the second place I avoid the comparatively sharp
corners previously existing at the junction of the midfeather of the
collecting troughs with the cylinder, and I substitute curves for the
said corners, the said curves guiding the water and matters into the
troughs.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Benjamin Toulson in the Great Seal Patent Office
on the 28th February 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, BENJAMIN
TOULSON, of the Priory Tin and Copper Works, Pendleton, in the
County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of August, in the
year of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Benjamin Toulson, Her special
license that I, the said Benjamin Toulson, my executors, administrators,
and assigns, or such others as I, the said Benjamin Toulson, 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'

page_text: DRYING CYLINDERS, AND IN THE METHOD OF REMOVING WATER AND IMPURITIES
THEREFROM," upon the condition (amongst others) that I, the said
Benjamin Toulson, 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 immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Benjamin Toulson, do hereby declare
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement and (accompanying Drawings), that is to say :-
My Invention relates to the steam heated cylinders of drying
machines, such, for example, as are employed in the drying of woven
fabrics.
In such cylinders as constructed and fitted previously to my said
Invention the internal blocks or strengthening rings have tended to
retain impurities or solid or semi-solid matters within the cylinder, and
impurities or matters have also lodged in the corners of the discharge
ducts or troughs. To remedy these defects I, in the first place, employ
two or more blocks or portions of rings, each of which is less than an
entire ring, in place of each complete block or ring as hitherto formed;
and I fix them so that the water and said matters can get past their
ends to the collecting troughs. In the second place I avoid the com-
paratively sharp corners previously existing at the junction of the
midfeather of the collecting troughs with the cylinder, and I substitute
curves for the said corners, the said curves guiding the water and matters
into the troughs.
And in order that my said Invention may be fully understood, I have
furnished a Sheet of Drawings marked with letters of reference to
accompany this Specification, to which Drawings I will now refer.
Fig. I represents a longitudinal section of a drying cylinder drawn as
reduced in size, the line of section being indicated at A, in Fig. 2, which
is a cross section on the line B, in Fig. 1. In the said Figs. O, repre-
sented detached at Figs. 3 and 4, is the improved block which I
substitute for the ordinary block. The said block, in the example, con-
sists of three parts, namely, a semi-annulus or half ring a and-two-thirds
"

page_text: •
.
of an annulus or ring 6 fixed within a short cylindrical ring c. The
ring c is employed for convenience of construction, and adds to the
stiffness of the block; but, if not considered to be necessary or desirable,
the said ring may be dispensed with, in which case each of the parts a
and 6 would be separately fixed within the cylinder. The part 6 is fixed
in a plane at right angles to the axis of the cylinder, and the part a in
a plane diagonal to the said axis, as seen in Fig. 4, which represents a
section taken on the line D in Fig. 3. In Fig. 4 it will be seen that the
central part of a coincides with the plane of b, whereas there are spaces
between the ends d, d, and the nearest side of 6. The effect of this
arrangement is that when the cylinder is caused to revolve any water and
dirt which may be in the left-hand portion of the cylinder and near
the part & enter one or the other of the said spaces, and are moved for-
wards by the screwing action of a into the right-hand portion of the
cylinder. It will thus be seen that this arrangement promotes the
passage of dirt instead of impeding it, as in the ordinary arrange-
ment.
Fig. 5 illustrates a slight modification in the arrangement. In this
example both of the incompleté rings a and bare in planes, which are
at right angles to the axis of the cylinder. In such a case one of the
collecting troughs indicated by e may extend to a, or not, as preferred or
considered to be desirable.
It must be understood that I do not confine myself to the proportions
of the parts a and b, as either of them may be less or more of a complete
ring, than herein-before mentioned; and also more than two segments or
incomplete rings may be substituted for the ordinary ring, as preferred
or considered to be suitable.
Although I have only shown one block, consisting of two incomplete
rings in the cylinder, two or more blocks so composed may be fixed in
onc cylinder, as may be considered to be necessary in each case.
The second part of my Invention is indicated more particularly in
Fig. 2, wherein.it will be seen that the junction of the troughs with the
shell of the cylinder is effected by means of curved plates finstead of by
extending the straight midfeather to the said shell:
The sharp
corners previously existing at the said junction are thus avoided, and the
dirt is guided into the troughs instead of lodging in the said corners.
It will be seen that the said midfeather 9 is extended some distance

page_text: along the discharge pipe h, whereby the passage of water and dirt from
one trough to the other is prevented.
Having now fully described and indicated the nature of my said
Invention, I would in conclusion, have it. to be distinctly understood
that I claim,
First. The substitution of two or more incomplete rings for the com-
plete ring or block hitherto used, substantially as and for the purpose
set forth and indicated herein-before, and by the accompanying
Drawings.
And, lastly. The curved junctions, substantially as and for the
purpose set forth and indicated herein-before, and particularly when
referring to Fig. 2 of the accompanying Drawings.
In witness whereof, I, the said Benjamin Toulson, have hereunto
set my hand and scal, this Twenty-seventh day of February, in
the year of our Lord One thousand eight hundred and seventy-
four
Signed and sealed by the said
Benjamin Toulson in the
presence of
•
EDWARD K. DUTTON,
Agent to the Patentee,
3, Princess Street,
Manchester.
B. TOULSON. (L.S.)