LÚPROVEMENTS IN AND IN THE CONSTRUCTION OF DRYING OR STEAM HEATED CYLINDERS
Year: 1884

page_text: пенки супциото.
We JOHN HAWTHORN and JOHN PEMBERTON LIDDELL of the firm of- John
Hawthorn and Company of the Canal Foundry Newtown in the County of
Chester, Machinists, do hereby declare the nature of the said invention for
·LÚPROVEMENTS IN AND IN THE CONSTRUCTION OF DRYING OR STEAM HEATED
CYLINDERS to be as follows:-
"1
Our Invention relates to the steam heated cylinders used in the drying of woven
fabrics, in the drying of paper in process of manufacture and for other purposes.
The cylindrical portions of such cylinders are usually made of sheet copper or of
tinned sheet iron and previously to our invention the ends have been secured to
the said cylindrical portions by riveting and soldering or by soldering. When so
made there is a liability for leakages of steam to take place owing to the failuro of
the solder in any part of the joint and the removal and replacement of the ends
when repairs have been required has necessitated a considerable expenditure of
time and trouble. To remedy these defects is the object of our invention.
We
make the cylinder slightly conical at each end and we turn or form the end discs
or blocks on their peripheries to portions of cones so as to fit the interiors of the
coned ends of the cylinder. Outside the cylinder end we apply a metal ring which
is turned or formed to a hollow conoidal form to fit the coned end of the cylinder.
The said ring and the disc or block are drawn together by means of screws or bolts
so as to tightly grip the end of the cylinder between the two parts. By this
means we are enabled to obtain a tight joint without the use of solder nevertheless
we do not exclude the use of solder or cement if it is thought necessary for any
reason to still further secure the joint by its aid. We prefer to use screws to
tighten the joint the screw holes in the disc not being drilled through. The
outer ring may be made of angle iron or steel or be of an angular form in cross
section or be provided with swells for the screws. When constructed in accordance
with our invention the parts can be readily and quickly put together in a steam-
tight manner and be easily taken apart when repairs are necessary.

page_text: "
MO
Heated Cylinders.
We JOHN HAWTHORN and JOHN PEMBERTON LIDDELL of the firm of John
Hawthorn and Company of the Canal Foundry Newtown in the County of
Chester, Machinists do. hereby declare the nature of the said Invention for
IMPROVEMENTS IN AND IN THE CONSTRUCTION OF DRYING OR STEAM HEATED
CYLINDERS " 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 the steam heated cylinders used in the drying of woven
fabrics in the drying of paper in the process of manufacture and for other purposes.
The cylindrical portions of such cylinders are usually made of sheet copper or of
tinned sheet iron and previously to our Invention the ends have been secured to
the said cylindrical portions by riveting and soldering or by soldering. When so
made there is a liability for leakages of steam to take place owing to the failure of
the solder in any part of the joint and the removal and replacement of the ends
when repairs have been required has necessitated a considerable_expenditure of
time and trouble. To remedy these defects is the object of our Invention.
make the cylinder slightly conical at each end and we turn or form the end discs
or blocks on their peripheries to portions of cones so as to fit the interiors of the
coned ends of the cylinder. Outside the cylinder end we apply a metal ring which
is turned or formed to a hollow conoidal form to fit the coned end of the cylinder.
The said ring and the disc or block are drawn together by means of screws or bolts
so as to tightly grip the end of the cylinder between the two parts.
We
In the accompanying drawing one end of a cylinder is represented in section the
line of section being taken on the axis of the cylinder and of one of its journals.
In the drawing a. is a portion of the cylinder proper b. is one of the cylinder ends
or end discs or blocks on which is cast or formed the hollow journal 6', and c. is the
exterior metal ring. The cylinder end is coned from the end to the point a¹ or
thereabouts and the periphery of the end b. is turned to the form of a portion of a
cone having the same taper as the end of the cylinder so that when the end b. is
placed in position it fits the coned end of the cylinder. The ring c. may be made
of brass, steel wrought iron or any suitable metal or alloy and is turned internally
to have the same conical taper as the periphery of the end b. At intervals around
the end b. holes are drilled and tapped to receive screws d. d. In order to provide
sufficient metal at the points where these holes are drilled bosses or paps are
formed so that the boles do not extend through the metal. In the drawing the
bosses are shown in section. The screws pass through holes in the ring c. The
ring may be of an angular form in section or may be formed with swells at
intervals to receive the screws or bolts. When the parts are put together as in
the drawing and the screws are tightened the end 6. is drawn outward toward
the ring c. and the latter is forced further on to the cylinder so that the metal
of the latter becomes tightly clamped between the two conical surfaces of the

page_text: end b. and the ring c.
As many screws are used as may be considered to be
necessary to ensure a tight joint. Bolts might be substituted for the screws but
in such a case we should prefer that the bolt holes did not extend through the
metal of the end b. When the parts are formed and put together in the indicated
manner a steam tight.joint can be obtained without the use of solder and we prefer
not to use any solder but if for any reason it be desired to make the joint more
secure by the use of solder or cement such might be used. The use of solder not
being necessary the parts can be readily and quickly put together in a steam tight
manner and be easily taken apart when repairs are necessary.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is
1. In the construction of drying cylinders coneing the ends of the cylinder and
the peripheries of the two end discs or blocks and applying internally coded rings
outside the coned ends of the cylinder the inner disc and the outer ring being
drawn together. by means of screws or bolts substantially as set forth.
2. As means for closing the end of a drying cylinder the coned end of the
cylinder clamped between the coned cylinder end b. and the coned ring c. by.
tightening the screws d. substantially as set forth.
3. In a drying cylinder making a steam-tight joint at the connection between
the cylinder end and the cylinder without the use of solder by the exterior
application of a coned clamping ring the cylinder end being coned to correspond
substantially as set forth.