Improvements in Steam Traps.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Steam Traps.
I, CHARLES SNow, of Thurnscoe Hall, Thurnscoe, near Rotherham, Yorkshire,
Mining Engineer, do hereby declare the nature of this invention to be as
follows:-
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"
The body of the steam trap made according to this invention is in the shape
of a bottle the closed neck of which is formed with a hollow steam inlet trunnion
on one side and a hollow water outlet trunnion on the other side. The outer end
of the steam inlet trunnion enters a stuffing box which forms its bearing and is
connected with the steam pipe. The water outlet trunnion enters and dips into
a chamber which forms an outer continuation of the bearings for the said
trunnion and is continued into a down water outlet pipe. Both bearings are
formed or fixed on a bracket or standard. The end of the water outlet trunnion
is formed with a staple, loop or arm for actuating a small outlet valve in the
aforesaid chamber.
The steam inlet trunnion and the water outlet trunnion communicate each by
a passage at right angles to the trunnions with the interior of the. bottle, the
former directly by its passage and the latter by a pipe fixed in its passage, said
pipe being downwardly inclined in the bottle or vessel the latter being assumed
to be in a horizontal position or thereabouts. The vessel is provided with an arm
whereon a weight can be adjusted so as to counterbalance the weight of the
bottle and hold it in the horitontal position or as long as it only contains steam.
A set screw may also be provided underneath the arm for preventing the counter-
weight from overbalancing. But as condense water accumulates in the bottle or
vessel, this vessel becomes so heavy that it overcomes the counterweight and
sinks down, the contained water passes out through the water trunnion and the
aforesaid staple, loop or arm opens the small outlet valve, so that the water can
escape thereby. When the vessel has thus emptied itself of water, the counter-
weight raises it into the horizontal position again, the outlet valve closing
meanwhile.

page_text: manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
These improvements refer to a steam trap in which the body is made in the
shape of a bottle, the closed neck of which is formed with a hollow steam inlet
trunnion on one side and a hollow water outlet trunnion on the other side, the 5
body being adapted to oscillate in the trunnion bearings, and a valve in the
water outlet end being arranged to open or shut according as the position of the
body is slanting or horizontal, all as hereinafter described.
In the accompanying drawing Fig. 1 is a vertical longitudinal section, Fig. 2 a
vertical cross section and Fig. 3 a horizontal longitudinal section of a steam trap
constructed according to my invention. Fig. 4 is a vertical cross section of the
water outlet end of the apparatus.
The bottle shaped body a has a closed neck, which is formed with a hollow
steam inlet trunnion on one side and a hollow water outlet trunnion on the
other side. The outer end of the steam inlet trunnion enters a stuffing box d
which forms its bearing and is connected with the steam pipe. The water outlet
trunnion is similarly provided with stuffing box bearing and enters and dips
into a chamber e which forms an outer continuation of the bearing for the
trunnion c and is continued into a down water outlet pipe f. Both bearings
work in a bracket or standard g. The end of the water outlet trunnion c is formed
with an arm which enters a staple or loop in the spindle of a small outlet
valve in the aforesaid chamber e, for actuating the said valve; or vice versa the
trunnion may have a loop or staple and the valve spindle an arm.
The steam inlet trunnion and the water outlet trunnion c communicate each
by a passage and respectively at right angles to the trunnions with the interior
of the bottle, the former directly by its passage and the latter by a pipe m
fixed in its passage, said pipe being downwardly inclined in the bottle or vessel a
as seen in Fig. 1 the bottle being assumed to be in a horizontal position or
thereabouts. The vessel a is provided with an arm whereon a weight o can be
adjusted so as to counterbalance the weight of the bottle and hold it in the
horizontal position or as long as it only contains steam. A set screw p may also
be provided underneath the arm for preventing the counterweight from over-
balancing.
As condense water accumulates in the bottle or vessell this vessel becomes so
heavy that it overcomes the counterweight and sinks down as shown in the
dotted lines Fig. 1 the contained water passes out through the water trunnion c,
and the staple loop or arm h opens the small outlet valve j, so that the water
can escape thereby. When the vessel a has thus emptied itself of water, the
counterweight raises it into the horizontal position again, the outlet valve j
closing meanwhile.
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:
1. A bottle shaped steam trap adapted to oscillate on trunnions at one end said
trunnions connecting respectively with the steam inlet and water outlet the
bearing for the water outlet trunnion having a chamber provided with a small
valve which is opened by an arm on the water outlet trunnion when the trap
overbalances by reason of condense water accumulating in it the said valve
closing again when the water runs out substantially as set forth.
2. The construction of steam trap described with reference to the drawings.
D1191 Ja of T... 1000
JENSEN & SON,
77, Chancery Lane, London, W.C.,
Patent Agents.