Improvements in Boiler Feed Apparatus.
Year: 1895

page_text: Date of Application, 17th Sept., 1895-Accepted, 26th Oct., 1895
COMPLETE SPECIFICATION.
Improvements in Boiler Feed Apparatus.
1, ANTON KRAUSEN, of 3 Antonsgasse, Cologne, in the Empire of Germany,.
Mechanic, 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 boiler feed apparatus.
The apparatus described in the present Specification is intended to facilitate the
feeding of boilers with water in the easiest possible manner, it being quite
indifferent under what pressure the boiler is working. An over feeding or an
underfeeding of the boiler is equally impossible there is also connected with it a
great saving of steam and by direct coupling with the engine shock is prevented.
The power required for driving the apparatus is very small since only two sliding
valves and one eccentric are to be driven and the number of turns of the latter is
very small.
The improved feed apparatus is shown in the accompanying drawings in
Fig. 1 is an elevation.
which
Fig. 2 a section on line x-x of Fig. 3.
Figs. 3 and 4 are each a longitudinal section on line y y of Fig. 2, with different
positions of slide-valves.
The apparatus consists of a bed-plate a in which are contained the passages b, c, d, e.
On this plate a by means of which the apparatus can be fixed in any suitable
position, are fitted the two valve-boxes, in which the slide-valves f¹, g¹,
connected by valve-rods, and driven by eccentric i or the like, can be moved to
and fro.
The valves can be pushed by a spring or such like against the valve face,
though in most cases this will scarcely be required as the valves stand under
steam pressure.
With each valve casing communicates a tube f³ or g³ for
connection with the boiler and the plate is fitted with tubes b, c, d, e, one for
each passage.
The two tubes c¹, e¹, are connected with a tank, the size of which is regulated
This tank has a
by the size of the boiler or by the amount of water consumed.
cock h¹.
The apparatus is set in motion by the steam engine the movement of the latter
being transmitted to the axle i of eccentric i¹.
The number of turns of the latter is regulated by the size of tank h, by the
inlet-pipe d' and by the lower passage, or as before said, by the quantity of water
consumed that has to be replaced.
Whilst pipe is connected with the boiler above the highest water level, the
pipe is fixed to the boiler above the lowest water level, a slight inclination being
given to the tube towards the boiler. Pipe d' is connected with a higher situated
water-reservoir and pipe & serves for the surplus of water and this pipe may be
fitted at its upper end with a cup.
In the different pipes there niay be fitted closing-cocks as required.
The operation of this apparatus is as follows:
In the position of the sliding valve shown in Fig. 3, the boiler is connected with
the feeding tank by the upper pipe fas also by the lower pipe, the valve
chests, 9, passages c, e, and pipes c', e', thus counterbalancing the steam pressure

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of the boiler and allowing the water in tank to escape by its own pressure or
rather by the pressure of the water column above pipe 9. When by the action of
eccentric the sliding valves are moved and brought into the position shown in
Fig. 4 the water will flow through pipe d' and passage d and will pass below
slide gl through passage e and pipe el to the feeding tank leaving an escape for
air and surplus of water through pipe c' passage c below slide passage band
pipe b¹.
This operation is repeated and the apparatus will be arranged so as to make the
eccentric turn 2 to 3 times in a minute so as to give sufficient time to the water to
pass into the boiler.
Through its particular arrangement the apparatus must be constantly working,
thus always feeding the boiler. An overfeeding is impossible because when the
water level in the boiler reaches pipe this water column will be exactly equal
to that in the feeding tank and a further supply is therefore impossible.
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 :-
A boiler-feed apparatus comprising a tank, slide valves and connections so
arranged that according to the positions of the slide valves, the boiler is alternately
brought into communication with the feeding tank above and below and alternately
disconnected from it, whereupon the tank is brought into communication with a
reservoir at a higher level and with an outlet pipe.
Dated this 17th day of September 1895.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, W.C.,
Agents to Applicant.