An Improved Evaporator for Saccharine or other Liquids.
Year: 1894

page_text: Date of Application, 2nd Mar., 1894
Complete Specification Left, 29th Nov., 1894-Accepted, 29th Dec., 1894
PROVISIONAL SPECIFICATION.
An Improved Evaporator for Saccharine or other Liquids.
I, JOHN MCNEIL, of the Firm of Aitken M*Neil and Company, of Colonial
Iron Works, Helen Street, Govan, in the County of Lanark, North Britain,
Engineer, do hereby declare the nature of this invention to be as follows that is
to say :-
My said invention has for its object to improve the construction and increase the
efficiency of apparatus for evaporating saccharine or other liquids whilst in transit
through the apparatus.
My improved apparatus comprises an open tank provided with an inlet and an
outlet for the liquid to be evaporated, and fitted with a number of vertical
partitions having passages across at alternate ends so that the liquid may flow
between the partitions in opposite directions alternately. In the lower part of
each compartment into which the tank is divided by the vertical partitions there is
a group of horizontal tubes through which steam is passed for the purpose of
heating the liquid. Each group of tubes is fixed in end boxes, the box at one end
being divided by a partition into two compartments, one of which communicates
with a steam inlet branch pipe, the other communicating with an outlet or drainage
branch pipe. The box at the other end is without partition; and the steam from
the inlet passes through one half of the group of tubes in one direction and passing
through the further box to the other half of the tubes returns through them in the
opposite direction.
The boxes at the inlet-and-outlet end are fixed, and are fitted in connection with
passages formed in the bottom of the tank in a manner allowing the pipe attachınents
to be conveniently made externally. The boxes at the further end are free to move
with expansion and contraction of the tubes. The outlet for the liquid undergoing
evaporation is placed at such a height as to maintain a suitable depth of liquid
over the steam pipes.
Dated this Second day of March 1894.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
An Improved Evaporator for Saccharine or other Liquids.
I, JOHN MCNEIL, of the Firm of Aitken M Neil and Company, of Colonial
Iron Works, Helen Street, Govan, in the County of Lanark, North Britain,
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, that is to say :-
My said invention has for its object to improve the construction and increase the
efficiency of apparatus for evaporating saccharine or other liquids whilst in transit
through the apparatus.
My improved apparatus comprises an open tank fitted with vertical partitions
having passages at alternate ends so that liquid undergoing evaporation may flow
between the partitions in opposite directions alternately.

page_text: In each compartment of the tank there are tubes through which steam is passed
to heat the liquid. Each group of tubes is fixed in end boxes, the box at one end
having a partition separating a steam inlet from an outlet, while the box at the
other end is without a partition. The inlet-and-outlet boxes are fitted in connection
with passages formed in the bottom of the tank in a manner allowing the pipe
attachments to be conveniently made externally.
And in order that my said invention and the manner of performing the same
may be properly understood I hereunto append two sheets of explanatory drawings,
to be hereinafter referred to, and showing my improved evaporator.
Figure, 1, on Sheet, 1, of the drawings is a plan and Figure, 2, is a longitudinal
vertical section of the improved evaporator.
Figure, 3, on Sheet, 2, is an enlarged sectional plan of a part of the improved
evaporator, Figure, 4, being an enlarged longitudinal vertical section of the
same.
Figure, 5, is an enlarged sectional elevation of a detail, as at right angles to
Figure, 4.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
My improved apparatus comprises an open tank, A, provided with an inlet, B,
and an outlet, C, for the liquid to be evaporated, and fitted with a number of
vertical partitions, D, having passages, F, across at alternate ends so that the
liquid may flow between the partitions in opposite directions alternately. In the
lower part of each compartment, G, into which the tank, A, is divided by
the vertical partitions, D, there is a group of horizontal tubes, H, through which
steam is passed for the purpose of heating the liquid. Each group of tubes is fixed
in end boxes, J, and, K, the box, J, at one end being divided by a partition, L,
into two compartments, M, and, N, one, M, of which communicates through a
passage, P, formed in the bottom of the tank, A, with a steam inlet branch pipe, Q,
connected to the tank. The other compartment, N, of each box, J, communicates
with an outlet or drainage branch pipe, R, extending across the tank and leading
into a steam trap (not shown). The box, K, at the other end is without partition.
The steam from the inlet branch pipe, Q, passes into the passage, P, and thence
through a short tube, S, into the compartment, M, of each box, J. From the
compartment, M, of each box, J, the steam passes through one half of each group
of tubes, H, in one direction and passing through each further box, K, to the other
half of each group of tubes returns through them in the opposite direction to the
drainage branch pipe, R. Each box, J, is held in place by the tube, S, which fits
tightly into it and into the bottom of the tank; and each box, J, rests on a joint
of suitable material, T, let into a recess in the tank bottom. The boxes, K, at the
further end of the tank are free to move with expansion and contraction of the
tubes, H. The outlet, C, for the liquid undergoing evaporation is placed at such a
height as to maintain a suitable depth of liquid over the steam tubes, H.
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 :-
The construction, arrangement, and combination of parts constituting the
improved evaporator for saccharine and other liquids substantially as herein before
described.
Dated this Twenty-eighth day of November 1894.
EDMUND HUNT,
Applicant's Agent.