Surface Condenser for High-pressure Engines.
Year: 1889

page_text: Date of Application, 20th Apr., 1889
Complete Specification Left, 9th Jan., 1890-Accepted, 15th Feb., 1890
PROVISIONAL SPECIFICATION.
Surface Condenser for High-pressure Engines.
A communication from abroad by GEORG ALBERT GREEVEN, of Crefeld, in the German
Empire, Engineer:
1, ALFRED GEORGE BROOKES of the firm of Wm. Brookes & Son of 55 & 56 Chancery
Lane in the County of Middlesex, Patent Agent do hereby declare the nature of this
invention to be as follows:-
These condensers are chiefly intended for small high pressure steam engines, the
waste steam of which has a still somewhat higher pressure than the atmosphere. They
are intended to take the place of the escape pipe or waste steam pipe thereby avoiding
the resistance caused by the latter, besides they protect the roofs &c. and do away
with the troublesome noise..
The condensation is effected by surface cooling. A practical exemplification of the
invention embodies a vessel of the condenser, a serpentine or coil with thin walls; the
cooling water enters at one end of the coil pipe and is discharged at the other
end spreading over the outer wall of the vessel in flowing down into the open
basin provided below, which has at a little higher than the level of the bottom of
the coil chamber an overflow gutter. The cover or bottom of the coil chamber is
provided with valves, easily opening downwards. The open basin is always filled
with water up to level of the overflow channel, which preserves the valves from
the access of air. The exhaust steam pipe of the engine is connected with the
condenser, say midway of the height of the outer wall of the coil chamber.
The proportional size of the steam cylinder and the condenser is such that, when the
engine is reversed, the steam which enters into the condenser increases for a
moment the pressure in the condenser just a trifle above the atmospheric pressure
and, in consequence, forces the condensed water and air out of the condenser. In
the same instant the pressure in the condenser ceases and offers no further resistance
to the motion of the piston during the remainder of the stroke.
Dat the 20th,
1 1900
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Surface Condenser for High-pressure Engines.
A communication from abroad by GEORG ALBERT GREEVEN, of Crefeld, in the German
Empire, Engineer.
I ALFRED GEORGE BROOKES of the firm of Wm. Brookes & Son of 55 & 56, Chancery
Lane, in the County of Middlesex, Patent Agent, 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 :-
The surface condenser forming the object of this invention is mainly adapted to be
used in conjunction with high pressure engines, in which the escape steam has still
an excess of pressure. This condenser is, in fact, intended to be employed instead
of the ejection or escape pipes, with the result of doing away with the resistance
consequent upon the working of such pipes, whereby both the damage to the roofs
of the buildings and the noise, which is often so unpleasant, are avoided.

page_text: The main feature of the condenser is a chamber dipping into the intercepter, wherein
a cooling pipe is so arranged that the cold water issuing at the top of the same flows
down upon the said chamber and into the intercepter again.
The case or chamber A of the surface (cooling) condenser contains a serpentine or
worm pipe, or indeed any convenient cooling pipe, S, with thin walls. The cold water
enters at a and issues at the top of worm S, at ; in descending it touches the
outer wall of the chamber and finally enters the open intercepter B, which is
provided with a flange c, arranged somewhat higher than the bottom (or lower
lid) d of chamber A. The said bottom d is provided with readily opening valves e.
The open vessel B, which is kept constantly filled with water up to flange c, forms
a joint or sealing shutting off the air from valves e.
The discharge pipe of the steam engine is fitted to the short tube or neck f of
chamber A.
The relative size of the steam cylinder and condenser is so proportioned that when
the change of stroke of the engine occurs, the steam on entering the condenser,
immediately increases the pressure therein beyond the atmospheric pressure, so that
valves e are thereby enabled to discharge both the air contained in the chamber and
the condensation water. But, immediately after the pressure ceases again within
the condenser, and therefore the piston is enabled to complete the remaining portion
of its stroke without encountering any further resistance.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to he performed, I declare that what I
claim is:
1. A surface condenser characterised by a chamber (A) dipping into a receiver or
intercepter (B), by a cooling pipe (S) arranged within such chamber, in such a manner
that the cold water issuing from the top part thereof, falls back upon the outer
surface of the chamber (A) and thence into the said intercepter (B) and by one
or more valves (e) arranged in the chamber (A), from which valves the air is
shut off by the water contained in vessel (B) and by which the condensation water
and air are discharged from the chamber.
2. In a surface condenser, the arrangement or combination of parts substantially as
and for the purposes hereinbefore set forth.
Dated the 9th T
1800
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.