An Improved Steam Pan for Boiling Sugar or other Liquids.
Year: 1894

page_text: Date of Application, 13th June, 1894
Complete Specification Left, 13th Mar., 1895-Accepted, 24th May, 1895
PROVISIONAL DI DUIFICATION.
An Improved Steam Pan for Boiling Sugar or other Liquids.
I, GEORGE FLETCHER, of Masson and Atlas Works, Litchurch, in the County
of Derby, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to a steam pan for boiling sugar or other liquids, such pan
having its heating drum adapted to be quickly raised for cleaning purposes, and
lowered back to its original position, without it being necessary to break or re-make
joints.
In carrying out my invention I mount the steam drum in an open pan, on a
sliding ram which passes down through glands into a steam cylinder having a steam
pipe fixed thereto and an outlet for the water of condensation. The said steam
pipe is connected with the steam main and passes up through the ram into the drum
which is fitted with a large number of small tubes opening at both ends into the
pan and thus forming a large amount of heating surface for boiling the sugar or
other liquid and with a few larger tubes for promoting the circulation of the liquid
and thereby accelerating the evaporation. Fixed to the top of the drum is an eye-
bolt intended to have a block and fall booked thereto the top block being suspended
from a cross-beam or the like and the drum being counterbalanced, if required, by
a weight at the end of the suspension rope.
Suitable stops are provided for preventing the ram with the drum from being
driven up by the pressure of the steam in the drum.
By this means the drum can be easily and quickly raised when required for
cleaning the tubes thereof and lowered into position again without requiring to
break any joints.
Dated the 11th day of June 1894.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
An improved Steam Pan for Boiling Sugar or other Liquids. ›
I, GEORGE FLETCHER, of Masson and Atlas Works, Litchurch, in the County
of Derby, Engineer, 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 :-
2.
My invention relates to a steam pan for boiling sugar or other liquids, such pan
having its heating drum adapted to be quickly raised for cleaning purposes, and
lowered back to its original position, without it being necessary to break or re-make
joints.
In carrying out my invention I mount the steam drum in an open pan, on a
sliding ram which passes down through glands into a steam cylinder having a steam
pipe fixed thereto and an outlet for the water of condensation. The said steam

page_text: '
ป
pipe is connected with the steam main and passes up through the ram into the drum
which is fitted with a large number of small tubes opening at both ends into the
pan and thus forming a large amount of heating surface for boiling the sugar or
other liquid and with a few larger tubes for promoting the circulation of the liquid
and thereby accelerating the evaporation. Fixed to the top of the drum is an
eye-bolt adapted to receive the hook of a pulley block suspended from a cross-
beam or the like for the purpose of lifting the drum from the pan the drum being
counterbalanced, if required, by a weight at the end of the suspension rope or
chain.
.
Suitable stops are provided for preventing the ram with the drum from being
driven up by the pressure of the steam in the drum.
To enable my invention to be fully understood I will describe the same with
reference to the accompanying drawings, in which:-
Figure 1 is a vertical section of my improved steam pan:
Figure 2 a plan of the open pan with steam drum in position :
Figure 3 is an elevation of the pan supported on a platform and shewing the
steam drum lifted from the pan by means of the suspension chain and pulleys.
"A is the outer casing of the steam pan supported on suitable feet C. B is the
steam drum having besides the ordinary tubes for boiling the contents of the pan,
a number of tubes D of larger diameter for promoting the circulation of the boiling
contents. F is the ram fixed to the steam drum B.
G is the cylinder in which the ram F' slides having an opening M at the bottom
1. for the escape of water of condensation, Y is a steam trap in communication with
"the bottom of the cylinder G through M. E is the steam pipe, preferably provided
with a sheath H, secured at the top of the pipe as shewn at R, the said pipe being
secured to the bottom of the ram cylinder G by means of the nuts L and passing
up through the ram F.
The ram F is screwed into the top and bottom plates of the steam drum B and is
perforated, as shewn, so that steam can pass from the pipe E into the drum B and
condensed water can pass from the drum B down the ram F, which is preferably
sheathed with brass to prevent corrosion. The ram passes through the gland 1,
fixed to the bottom of the casing A, for preventing the liquor from escaping from
the steam pan and also, through a gland J. This gland Jis carried, together with
the cylinder G, by a forked bracket K which is secured to the bottom of the
casing A of the steam pan. A nut N is fixed to the ram F on the underside of
the drum B for keeping the said drum the required distance from the bottom of the
casing A when it is lowered into position for working and for making a good
joint at the place when the ram is screwed into the bottom of the casing of the
drum.
1.
O is a nut screwed to the top of the ram F on the top of the drum for the
purpose of making a tight joint. This nut O is provided with an eyebolt S which
is screwed into the same. The eyebolt S serves for attaching the steam drum B to
a block X, for the purpose of raising the drum B for cleaning the tubes, by means
of the lifting chain which passes over the pulleys T'and U. These pulleys are
fixed to any suitable cross-beam V. and the drum B is preferably counterbalanced
by a weight W attached to the end of the chain.
With this construction of steami pan the drum can be easily and quickly raised
"when required for cleaning the tubes thereof and lowered into position again without
requiring to break any joints.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
จ
1. A steam pan for boiling sugar and 'other liquids the heating 'drum' of 'which
**can be raised from the pan for cleaning purposes and again' lowered therein without
breaking and remaking joints substantially as described.

page_text: 2. The improved steam pan for boiling sugar and other liquids hereinbefore
described and illustrated in the accompanying drawings.
Dated the 13th day of March 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.