IMPROVEMENTS IN THE CONSTRUCTION OF STEAK DRYING CYLINDERS
Year: 1873

page_text: LETTERS PATENT to William Mather, of the Firm of Messiours
Mather and Platt, of the Salford Ironworks, Manchester, in the
County of Lancaster, Engineer, for the Invention of "IMPROVEMENTS
IN THE CONSTRUCTION OF STEAK DRYING CYLINDERS."
Sealed the 6th May 1873, and dated tho 11th March 1873.
PROVISIONAL SPECIFICATION left by the said William Mather at the
Office of the Commissioners of Patents, with his Petition, on the
11th March 1878.
.
I, WILLIAM MATHER, of the Firm of Messieurs Mather & Platt,
of the Salford Ironworks, Manchester, in the County of Lancaster,
Engineer, do hereby declare the nature of the said Invention for
“IMPROVEMENTS IN THE CONSTRUCTION OF STEAM DRYING CYLINDERS," to be as
follows:-

page_text: I
lapsing of the same when a vacuum is accidentally formed in the
interior, and to facilitate the ejection of the water of condensation and
other substances through the discharge trunnion.
To the interior of the cylinder, in lieu of the ordinary annular blocks
which divide the cylinder into compartments, I solder or otherwise 5
connect a spiral stay, made of tinned sheet metal or other suitable
material, and the spiral stay terminates in a scoop at each end of the
cylinder. One scoop is connected direct to the discharge trunnion, and
the other by means of a diagonal pipe.
1
-
1
As the drying cylinder revolves, the spiral stay keeps constantly tra- 1
vorsing the water and any other substances that may accumulate within
the cylinder to one end, and the scoop then guides the water and other
substances into the discharge trunnion. The object of making a scoop
at each end of the spiral stay is to provide for an upper cylinder of a
drying machine, with two rows of cylinders, being put in the place of a
lower cylinder. The pitch of the spiral stay may be about two feet, or
more or less, according to the degree of strength required and the
rapidity with which it is required to eject the water. By this improved
construction the body of the cylinder is stayed more firmly, and con-
sequently maintains its true form more accurately than when stayed by.2
the ordinary annular blocks. The spiral stay also traverses the water
and other substances continuously from end to end of the cylinder
without raising them, and consequently the water scours or cleans the
interior of the cylinder.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 2
filed by the said William Mather in the Great Seal Patent Office on
the 5th September 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
MATHER, of the Firm of Messrs. Mather and Platt, of the Salford Iron-
works, Manchester, in the County of Lancaster, Engineer, send greeting. 3
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date tho Eleventh day of March, in the year of
our Lord One thousand eight hundred and seventy-three, in the thirty-

page_text: sixth year of Her reign, did, for Herself, Hor heirs and successors, give
and grant unto me, the said William Mather, Her special licence that I,
tho said William Mather, my executors, administrators, and assigns, or
such others as I, the said William Mather, my executors, administrators,
5 and assigns, should at any time agree with, and no others, from time to
timo 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 TRE CONSTRUCTION OF
O STEAM DRYING CYLINDERS," upon the condition (amongst others) that I,
the said William Mather, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and scals,
should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
3 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 Mather, do hereby declare
the nature of my said Invention, and in what manner the samo isto
bo performed, to be particularly described and ascertained in and by
the following statement (that is to say):-
The object of my Invention is to increase the strength of steam drying.
cylinders without adding materially to their weight, to prevent the
collapsing of the samo when a vacuum is accidentally formed in their
3 interior, and to facilitate the ejection of the water of condensation and
other substances through the discharge trunnion.
To the interior of the cylinder, in lieu of the ordinary annular blocks
which divide the cylinder into compartments, I solder or otherwise
connect a spiral stay, made of tinned sheet metal or other suitable
material, and the spiral stay terminates in a scoop at each end of the
cylinder. One scoop is connected direct to the discharge trunnion, and
the other by means of a diagonal pipe..
And in order that my Invention may be fully understood and readily
carried into operation, I will proceed to describe the accompanying Sheet
of Drawings, reference being had to the figures and letters marked
thereon.
.

page_text: Fig. 1 is an elevation of one of my improved drying cylinders, with
the front part of the shell removed to show the interior construction;
Fig. 2 is a sectional plan; Fig. 3 is a section through the line A, B;
and Fig. 4, a section through the line O, D.
The drying cylinder consists of an outer shell a and two end plates b, c, 5
provided with hollow trunnions, the former for the steam inlet and the
other for the water outlet as usual. In drying cylinders of the ordinary
construction annular stays are placed at intervals in the inside to give
the required strength and to prevent the collapsing when a vacuum is
accidently formed in the interior. Now these annular stays are 1
objectionable, as considerable difficulty is experienced in getting rid of
the water of condensation or any foreign matter from the interior of the
cylinder. Now my Invention consists in soldering or otherwise con-
neoting a spiral stay d, made of tinned sheet metal or other suitable
material to the interior of the drying cylinder. This spiral stay is 1
connected at one end to the inlet scoop f, and at the other end to the
outlet scoop g. The scoop f is connected to the hollow trunnion of the
end plate c by means of the diagonal tube h.
As the drying cylinder revolves the spiral stay & keeps constantly
traversing the water and any other substance that may accumulate 20
within the cylinder to one end, and the scoop g then guides the water
and other substances into the discharge trunnion c. The object of
making a scoop at each end of the spiral stay and of the diagonal tube h
is to provide for the discharge of the condense water through the outlet
trunnion whichever way the cylinder may revolve. The pitch of the 28
spiral stay may be about two feet, or more or less, according to the
degree of strength required and the rapidity with which it is required to
eject the water. By this improved construction the body of the cylinder
is stayed more firmly, and consequently maintains it true form more
accurately than when stayed by the ordinary annular blocks. The spiral 30
stay also traverses the water and other substances continuously from end
to end of the cylinder without raising them over the annular blocks as
now customary, and consequently the water scours or cleans the interior
of the cylinder, and the discharge is so rapid that after the first few
revolutions the cylinder will be kept free from water.
35
Having thus stated the nature of my Invention, and described the.

page_text: manner of performing the same, I declare that I claim, tho application
of spiral stays to the interior of drying cylinders.
In witness whereof, I, the said William Mather, have hereto set
my hand and seal, this Thirtieth day of August One thousand
eight hundred and seventy-three.