Improvements in the Construction of Steam Drying Cylinders.
Year: 1886

page_text: Date of Application, 10th Aug., 1886.
Complete Left, 10th May, 1887.
Complete Accepted, 10th June, 1887.
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Steam Drying Cylinders.
I, WILLIAM ATHERTON, of the firm of Atherton Brothers, of Hanover Street
Foundry, Preston, in the County of Lancaster, Machinists and Ironfounders, do hereby
declare the nature of this invention to be as follows:-
:-
This invention relates to that class of revolving steam drying cylinders (known as
cavity cylinders) in which the steam passes into a cavity or space between an inner
and an outer shell with enclosing sides, the whole being carried at each side upon the
extremities of arms radiating from a central shaft or axis. The shaft at one end
has a hole through which the steam is conducted to pipes leading to the cavity,
other pipes being so arranged as to carry away through the opposite end of the
shaft the water formed by condensation.
at
In the ordinary construction of such cylinders suitably formed "buckets"
intervals are so arranged opposite the carrying-off pipes as to meet the water
lodging at the bottom of the cavity and to guide the water into the carrying-off pipes.
Heretofore the buckets have been fastened to the outer shell and in case of accidental
detachment from the shell great inconvenience and expense is caused in getting to
the interior for the purpose of effecting repairs. Now according to my invention
the buckets are affixed to the inner instead of to the outer shell in such manner as
to be readily renovable either for repairs or for access to the interior of the cavity.
To this end a suitably shaped hole or opening is made through the inner shell
opposite the outward extremity of each of the carrying-off pipes and I employ. for
each opening a bucket consisting of an inner curved, rectangular funnel shaped
mouth-pieco provided with a projecting flange which rests upon the outside surface of
the shell surrounding the opening. The flange forms part of a top or lid having
central hole in connexion with the carrying-off pipe, the junction of the two being
д

page_text: effected by means of a union" pipe coupling or other convenient device. Screw-
bolts, rivets, soldering, or other suitable means may be employed for fastening the
bucket to the inner shell so as to ensure a steam-tight joint between it and the flange.
By removing the screw-bolts or other fastening device the bucket may be readily
taken out for examination and repairs and access to the interior of the cavity afforded.
The curved mouthpiece of the bucket is so formed as that its outer edge may nearly
reach the outer shell and thus be in a position for scooping up any water at the
bottom of the cylinder and so convey it to its carrying-off pipe.
Dated this 10th day of August 1886.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Steam Drying Cylinders.
I, WILLIAM ATHERTON, of the firm of Atherton Brothers, of Hanover Street
Foundry, Preston in the County of Lancaster, Machinists and Ironfounders, 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:-
This invention relates to that class of revolving steam drying cylinders (known as
cavity cylinders) in which the steam passes into an annular cavity or space between
an inner and an outer shell with enclosing sides, the whole being carried at each
side upon the extremities of arms radiating from a central shaft or axis. The shaft
at one end has a central hole through which the steam is conducted to pipes leading
to the cavity, other pipes being so arranged as to carry away through the opposite end
of the shaft the water formed by condensation.
In the ordinary construction of such cylinders suitably formed "buckets" at
intervals are so arranged opposite the carrying-off pipes as to meet the water lodging
at the bottom of the cavity and to guide the water into the carrying-off pipes.
Heretofore the buckets have been fastened to the outer shell, and in case of accidental
detachment from the shell great inconvenience and expense is caused in getting to the
interior for the purpose of effecting repairs. Now according to my invention the
buckets are affixed to the inner instead of to the outer shell in such manner as to be
readily removable either for repairs or for access to the interior of the cavity. To
this end a suitably shaped hole or opening is made through the inner shell opposite
the outward extremity of each of the carrying-off pipes and I employ for cach
opening a bucket consisting of an inner curved rectangular funnel-shaped mouth
piece provided with a projecting flange which rests upon the outside surface of the
shell surrounding the opening. The flange forms part of a top or lid having a central
hole in connexion with the carrying-off pipe, the junction of the two being effected
by means of a union pipe-coupling or other convenient device. Screw-bolts,
rivets, soldering, or other suitable means may be employed for fastening the bucket to
the inner shell so as to ensure a steam-tight joint between it and the flange. By
removing the screw bolts or other fastening device the bucket may be readily taken
out for examination and repairs and access to the interior of the cavity afforded. The
curved mouthpiece of the bucket is so formed as that its outer edge may nearly reach
the outer shell and thus be in a position for scooping up any water at the bottom of
the cylinder and so convey it to its carrying-off pipe.
"
"
In order that my invention may be better understood I will proceed to describe the
accompanying drawings.
Fig. 1 is an end view (partly in section) of an ordinary form of cavity revolving
steam drying cylinder having the annular cavity or steam space a between the inner
shell and the outer shell c. is the shaft upon which the cylinder is carried,
having at that end opposite to the one shewn in the drawing the usual central hole

page_text: through which the steam is admitted to the cavity a through pipes dd, the other
pipes e e being those which carry off the water formed by condensation to the hole f
in the shaft s.
an
My improved bucket (shewn detached in plan view in Fig. 2.) is passed through
and lid having a
opening or manhole m and consists of the curved mouthpiece
projecting flange i which is fastened to the inner shell preferably by screw bolts and
nuts as shewn.
The lid may be connected by means of an ordinary union pipe-coupling; to the
carrying-off pipe e which leads into the hollow shaft s. A second union is preferably
employed to facilitate the removal of the pipe e.
Strengthening plates of any convenient kind may be employed to impart the
requisite firmness to the shell in the vicinity of the openings or manholes m; and the
usual converging plates may be arranged, if thought desirable, to guide the water to
the mouth of the buckets.
Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
In cavity revolving steam drying cylinders the use or employment of a detachable
bucket and an opening or manhole in the inner shell of the cylinder in manner
substantially as described and shewn in the drawings for the purpose set forth.
Dated this 10th day of May 1001.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.