Improvements in Apparatus for Evaporating, Condensing, and the like.
Year: 1891

page_text: Date of Application, 19th Nov., 1891
Complete Specification Left, 19th Sept., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Evaporating, Condensing, and
the like.
I, GEORGE YOUNG BLAIR of 149 High Street, Stockton-on-Tees, in the
County of Durham, Engineer, do hereby declare the nature of this invention to
be as follows:-
The object of my invention is to provide a ready means for cleansing examining
or changing the coils of evaporators condensers and like apparatus of that class
in which spiral or equivalent coils are enclosed within a circular or other vertical
case or jacket.
In carrying out my invention I mount the coils say four (or any convenient
number) on cross or right angled trunnions or radiating hollow arms connected with
the steam or heat outlet or its equivalent the coils being connected together and
with the inlet. The trunnions or drums are free to revolve carrying the coils when
the couplings are released and this may be arranged in any well known manner.
In any convenient position in the side of the case I arrange a door or opening
preferably about the same height or rather longer than that of the coils. When it
is desired to examine clean repair or change the coils it is only requisite to release
the coupling on the outlet and remove the door when the coils now free to revolve
may be separately brought opposite to the opening and receive due attention.
The usual safety valve steam and water gauges air cock blow off cock and feed
check valve are supplied.
Dated this 17th day of November 1891
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Evaporating, Condensing, and
the like.
I GEORGE YOUNG BLAIR of 149 High Street Stockton-on-Tees in the
County of Durham Engineer do hereby declare the nature of this invention to be
as follows:-
The object of my invention is to provide a ready means for cleansing, examining
or changing the coils of evaporators, condensers and like apparatus of that class in
which spiral or equivalent coils are enclosed within a cylindrical or like vertical
case or jacket.
In carrying out my invention I mount the coils say four ou cross or right angled
trunnions or radiating hollow arms connected with the steam or heat outlet or its
equivalent, the coils being connected together and with the inlet. The trunnions or
drums are free to revolve (carrying the coils) when the couplings are released and
this may be arranged in any well known manner.
In any convenient position in the side of the case I arrange a door or opening
preferably about the same height or rather longer than that of the coils. When it
is desired to examine clean repair or change the coils it is only requisite to release
the coupling on the outlet and remove the door when the coils, now free to revolve,
may be separately brought opposite to the opening and receive due attention.
The usual safety valve steam and water gauges air cock blow off cock and feed
check valve are supplied.

page_text: In order to more fully explain my improved apparatus for evaporating, condensing
and analogous purposes I have attached to this Specification a sheet of drawings to
which I shall hereafter refer and whereon
Figure 1. is a vertical sectional elevation of an evaporator fitted according to my
invention, and
Figure 2. is a plan of the same looking downwards.
It will be well understood that my evaporator may be also used as a feed heater
or for generating steam from salt water the heating power being obtained from
steam taken from the middle pressure steam chest or donkey steam pipe the steam
so generated being utilized for heating the feed water and the action of my
evaporator is as follows.
The salt water is first pumped into the evaporator by the small pump worked
from the air pump levers or by like suitable means not shown on drawings until
filled to the proper level (which may be marked on the evaporator) when it is shut
off and the steam turned on so as to enter the coils A. through the pipe D. for the
purpose of boiling, the water already pumped into the evaporator. The steam
generated thereby passes by means of the holes B. B. B. into the pipe C. which
conveys it to the feed heater or elsewhere. The steam introduced into the coils on
becoming condensed passes out as water through the outlet E. and may also be
conveyed to the feed heater.
As the water in the evaporator falls below the requisite level the supply may be
again turned on gradually until sufficient is admitted to keep it at the proper
height, the steam supply may be also regulated by the ordinary means.
To examine clean or take out the coils the door F. is taken off and the coupling G
on pipe E. released when the trunnions H. H. H. on which the coils A. A. A. are
mounted may be turned on their pivot J. so as to bring the said coils consecutively
opposite the opening.
A safety valve K. may be set to blow off at the desired pressure and a steam
gauge L. provided to shew the pressure in the dome, an air cock M. for allowing
escape of air on starting the evaporator and a gauge glass N. to show the height
of water in the evaporator may also be fixed in suitable positions.
In the bottom of the evaporator fit a blow off cock O with pipe leading to
bilge and this should be used about every eight hours or at proper intervals but before
opening the cock the feed water to evaporator should be shut off and the water
allowed to fall to bottom of glass. After using blow off said water must be pumped
up again to proper level and I may place on the water inlet P from small pump a
feed check valve Q and on the steam inlet to coils D. a regulating valve R.
Having now particularly described and ascertained the nature of my said
invention and in what manner it is to be performed I declare that what 1
claim is
1. In apparatus for evaporating condensing or generating mounting the coils on
revolving trunnions or arms through which the steam or other agent has free access
to the said coils and so that such coils may be successively brought opposite a door
or opening for the purpose of examination or cleansing substantially as described
with reference to accompanying drawing.
2. The apparatus for evaporating condensing and analogous purposes substantially
as hereinbefore described and as illustrated by the accompanying drawing.
Dated this 18th day of July 1892
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.