Improvements in and applicable to Drying Cylinders.
Year: 1894

page_text: Date of Application, 21st Feb., 1894
Complete Specification Left, 21st Nov., 1894-Accepted, 22nd Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in and applicable to Drying Cylinders.
We JOHN HAWTHORN and JOHN PEMBERTON LIDDELL of the Firm of
John Hawthorn and Company of Newtown, New Mills, in the County of Chester,
Engineers, do hereby declare the nature of this invention to be as follows :-
--
Our invention relates to steam heated drying cylinders which are provided with
means for effecting the discharge of water from the cylinders as is well understood.
Such discharge is effected by means of so termed buckets which revolve with the
cylinder and pick up the water which is delivered into passages leading to an exit
opening in one of the gudgeons or axial shafts of the cylinder. It is necessary or
advisable at times to obtain access to the said buckets and previously to our
invention so far as we are aware such access could not be had without removing
the cylinder end.
The object of our invention is to so construct and fit the cylinder end and parts
as that the buckets may be introduced into position and adjusted and be withdrawn
and replaced whilst the-cylinder end is in position attached to the cylinder and
without removing the same.
We form the cylinder end with an opening or with openings large enough to
admit of the passage into position of the bucket or buckets. In ordinary practice
there would be two such openings on opposite sides of the central axis. Each
opening would be of a size and form suitable to permit of the passage into position
of the bucket and would be closed by means of a covering plate luted packed or
prepared to be steam tight and secured by means of screws or bolts. The bucket
would be provided with a delivery spout or nipple arranged to discharge into the
receiving mouth of a passage formed in the cylinder end or in a part secured
thereto. The bucket might be formed or fitted in any suitable manner for being
secured in position but we prefer to secure the bucket to the said cover plate_so
that when such plate is removed it withdraws the bucket through the opening. We
may cast the bucket in one piece with the cover plate. A bucket which we have
designed for our purpose has a catch lip projecting beyond the main body of the
bucket and a little shorter than the bucket to permit the bucket to be drawn
straight out through the opening until the delivery spout would be clear. By
means of our invention we are enabled to make the bucket of any desired length.
We may adapt our invention to the cylinders otherwise constructed in accordance
with a prior invention for which Letters Patent Number 14881 of the year 1884
has been granted to us.
Dated this 20th day of February 1894
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.

page_text: Improvements in and applicable to Drying Cylinders.
We JOHN HAWTHORN and JOHN PEMBERTON LIDDELL of the Firm of
John Hawthorn and Company, of Newtown, New Mills, in the County of Chester,.
Engineers, do hereby declare the nature of this 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
-
Our invention relates to improvements in steam heated drying cylinders and
particularly to the means for effecting the discharge of the water of condensation
from such cylinders as is well understood.
Such discharge is effected by means of so termed buckets which revolve with the
cylinder and pick up the water which is delivered into passages leading to an exit
opening in one of the gudgeons or axial journals of the cylinder. It is necessary
or advisable at times to obtain access to the said buckets and previously to our
invention such access could not be had without removing the cylinder end.
The object of our invention is so to form the cylinder and so to construct and
apply the buckets, that the latter can be introduced into position or withdrawn and
replaced without disturbing the cylinder end.
Our invention will be more clearly apparent from an inspection of the annexed
sheet of drawings which illustrate the improvements.
Fig. 1 is a longitudinal sectional view of that end of the steam drying cylinder to
which our invention is applied.
Fig. 2 is an end view of the cylinder.
Fig. 3 is a cross section of Fig. 1 at the line A. B.
Fig. 4 is a perspective view of a discharging bucket with the end flange removed.
The cylinder end a is formed with two openings in the illustrated example,
although one opening or more than two might be used. These openings are intended
to allow of the introduction and withdrawal of the buckets b.
Heretofore these buckets b have been built or formed of sheet metal and have
consequently been liable to leak and rattle. According to our invention we form
them of cast metal and preferably cast them in one with the end flanges or cover
plates b' which act as covers to close up the openings in the cylinder end when the
buckets are applied. The buckets bare scoop shaped as clearly shown in Figs. 1
and 4, the latter fig. showing the bucket in perspective with the end flange
removed. A partition 2 extends from the flange or cover plate 61 back to the
closed end 13.
The partition rises above the level of the sides of the bucket and carries at the
top a turtle back which entirely boxes in the front part of the bucket and is of
equal width therewith and is made to the same curve as the interior of the cylinder c
and lies close to but not touching the same when the bucket is in position. Between
the turtle back and the edges of the bucket from the point marked 66 there
exists an opening through which the water finds admittance to the scoop bucket.
The turtle back and a portion of the partition up to the level of the top edges of
the bucket are stepped or shaped for such a distance from the flanged end of the
bucket as will allow the bucket to be drawn far enough out to permit the draining
spout to come outside of the cylinder end. The bucket is then moved towards
the centre of the cylinder and drawn entirely out, the remaining portion of the
bucket coming easily through the opening.
The bucket is similarly manipulated when it is being replaced, but in reverse
order. The flange or cover plate is secured to the cylinder end by bolts or
screws as indicated in Fig. 2, and forms a steam tight joint with the end. The
indicated form of bucket will discharge the water froin the cylinder when the latter
is revolving in either direction. The water enters the scoop shaped bucket through

page_text: the aperture 66 the partition and turtle back keeping it on one side of the bucket.
As the cylinder revolves, the water flows to the deeper end of the bucket and
through the draining spout 6 into one of the receiving mouths d which communicate
with the hollow journal e of the cylinder. The opposite receiving mouths are
separated by a partition d' which prevents the water drained into one mouth from
falling through the opposite mouth.
Although we prefer to cast the bucket and flange or cover plate in one as
described, they might be made separately and afterwards connected to each other
by bolts or other means. The exact form of the bucket, and its proportions are
capable of variation.
The opening or openings in the cylinder end to permit of the introduction and
withdrawal of the scoop buckets (which scoop buckets are supported from the
flanges or covers which close the said openings) are also useful in permitting ready
inspection of the interior of the cylinder, and for facilitating the removal of
accumulations of grease or other foreign matters from the said interior.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is.
1. As means for removing water from the interior of steam heated cylinders, the
buckets 6 cast in one with or attached to flanges or cover plates, which hold the
buckets in position in the cylinder, and also serve to close the openings in the cylinder
end, through which the buckets are introduced and withdrawn, substantially as
described and shown.
2. The improved bucket for removing water from the interior of steam cylinders,
tbe said bucket being cast in one with or attached to an end cover-plate or flange
and being shaped so as to facilitate its introduction and withdrawal into and from
the cylinder substantially as described and as illustrated.
Dated this 20th day of November 1894.
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.