IMPROVEMENTS IN STEAM TRAPS OR APPARATUS FOR COLLECTING THE CONDENSED WATER FROM STEAM IN PIPES AND OTHER CONDUITS AND VESSELS
Year: 1884

page_text: [Communicated from abroad by John Keidel, of Berlin, Friedenau, Germany.]
I PETER JENSEN of 33 Chancery Lane in the County of Middlesex, Fellow of
the Institute of Patent Agents, do hereby declare the nature of said invention for
IMPROVEMENTS IN STEAM TRAPS OR APPARATUS FOR COLLECTING THE CONDENSED
WATER FROM STEAM IN PIPES AND OTHER CONDUITS AND VESSELS to be as follows:-
The apparatus consists essentially of a tubular iron vessel provided with a valvo
seat at its upper end, this seat may be formed on the bottom of a screwed plug or
cover. A pipe, which I call the dip-pipe, forming the steam inlet, passes through
the centre of the seat fixed therein and down to within a short distance of the
bottom of the vessel which is closed by means of a recessed or cup shaped adjustable
Screw plug onto which latter is fixed a pipe outside the aforesaid descending steain
inlet pipe or dip-pipe, so that an annular space is formed between the two pipes.
The top of the outer or expansion pipe acts as a valve against the aforesaid valve
seat which moreover is formed with guides for guiding the pipe. The vessel is
provided with one or more lateral water outlets.
The steam with its condensed water and muddy parts, if any, enters the dip or
inlet pipe at top, passes down it and deposits its inuddy parts in the cup or recess
in the adjustable bottom plug; it then rises in the annular space between the
dip-pipe and the expansion pipe whereby it heats the latter so that it expands and
seats itself at the top. But according as the steam condenses or the annular space
becomes more or less charged with condensed water the expansion pipe contracts
in length because of the lowered temperature, and will open for letting out
condensed water into the space between the expansion pipe and the inner walls
of the vessel. By means of the adjustable plug at the bottom the rise of the
expansion pipe can be regulated as required for the temperature.
In steam traps of this kind as heretofore made the steam or condensed water
entered the expansion pipe directly, which has the disadvantage that the steam
overtakes the condensed water in the expansion.pipe thus causing a churning there

page_text: and back of the water and the steam therein or from the apparatus back into the
steam conduit and preventing an exact transfer of the difference in temperature
between steam or water to the expansion pipe, and a proper exact working of
the apparatus. By arranging the dip-pipe (the inlet) in the expansion pipe the
driving back of the water into the steam pipe is prevented, as the water of
condensation is kept back in the annular space between the dip pipe and the
expansion pipe until the valve opens, the steam then driving the water out of
the valve opening and then closing the valve.
Dated this sighth dox of Ianuame 1001.
I PETER JENSEN of 33 Chancery Lane in the County of Middlesex, Fellow of
the Institute of Patent Agents do hereby declare the nature of said invention for
"IMPROVEMENTS IN STEAM TRAPS OR APPARATUS FOR COLLECTING THE CONDENSED
WATER FROM STEAM IN PIPES AND OTHER CONDUITS AND VESSELS" and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The apparatus which is shown in vertical section on the accompanying drawing
consists essentially of a tubular iron vessel 1 provided with a valve seat 2 at its
upper end, this seat may as here shown be formed on the bottom of a screwed
plug or cover 2*. A pipe 3 which I call the dip pipe forming the steam inlet
passes through the centre of the seat being fixed therein and down to within a
short distance of the bottom of the vessel which is closed by means of a recessed
or cupshaped adjustable screw plug 4 onto which latter is fixed a pipe 5 outside
the aforesaid descending steam inlet pipe or dip pipe 3, so that an annular space C
is formed between the two pipes 3 and 5. The top of the outer or expansion pipe 5
acts as a valve against the aforesaid valve seat 2 which moreover is formed with
guides for guiding the pipe 5. The vessel 1 is provided with one or more lateral
water outlets. F and F are two such outlets.
The steam with its condensed water and muddy parts if any enters the dip or
inlet pipe 3 at A at the top, passes down it and deposits its muddy parts in the
cup or recess G in the adjustable bottom plug 4, it then rises in the annular
space C between the dip pipe 3 and the expansion pipe 5 whereby it heats the
latter so that it expands towards the top, being fixed below as stated and seats
itself at the top against the seat 2. But according as the steam condenses or the
annular space C becomes more or less charged with condensed water the expansion
pipe 5 contracts in length because of the lowered temperature, and will open for
letting out condensed water into the space E between the expansion pipe 5 and
the inner walls of the vessel 1. By means of the adjustable plug 4 at the bottom
the rise of the expansion pipe 5 can be regulated as required for the temperature.
In steam traps of this kind as heretofore made the steam or condensed water
entered the expansion pipe 5 directly which has the disadvantage that the steam

page_text: overtakes the condensed water in the expansion pipe thus causing a churning there
and back of the water and the steam therein or from the apparatus back into the
steam conduit and preventing an exact transfer of the difference in temperature
between steam or water to the expansion pipe, and a proper exact working of the
apparatus. By arranging the dip pipe 3 (the inlet) in the expansion pipe 5 the
driving back of the water into the steam pipe is prevented, as the water of
condensation is kept back in the annular space C between the dip pipe and the
expansion pipe 5 until the valve opens at 2, the steam then driving the water out
of the valve opening and then closing the valve.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is
First The dip pipe 3 inserted in the expansion pipe 5 of a steam trap substan-
tially as and for the purpose set forth.
Second The adjustable plug 4 whereto the expansion pipe 5 is fixed, which
latter serves as a valve against an upper seating, substantially as set forth.
Third: The steam trap constructed as shown on the drawing.