Improvements in Steam Traps.
Year: 1897

page_text: Improvements in Steam Traps.
I, JUSTINIEN GRISLAIN, of 4, Passage de la Bibliotheque, Brussels, Belgium,
Mechanician, do hereby declare the nature of this invention to be as follows:-
The invention consists in the use of metals or alloys, the difference of dilatation
and shrinkage of which serves to either open or close by means of a valve an orifice
by which the waste water is to be exhausted. The apparatus is applicable to steam-
mains, apparatus and cylinders.
The exhauster is essentially composed of a tube communicating with the steam-
recipient finished off by a cavity the bottom of which forms the seat of a valve,
which shoves into the lower opening of the above tube, thus stopping it up. The
above valve is provided with two horizontal orifices leading to a central conduit for
the exhaustion of the waste-water.
These orifices are being stopped up when the valve is resting on its seat, the
latter being freely in contact with a rod of a more dilatable metal than that of the
exterior tube we mentioned above. This rod being freely guided on the inside of
the tube by winged washers, gets dilated on the approach of the steam thus pushing
the valve on its seat and stopping up the exhaustion-orifices. When a certain
quantity of waste-water has gathered, this water flows into the apparatus and in
that way cools it; the rod shrinking to a greater extent than the tube thereby
removes the valve, and thus allows of the waste-water being exhausted.
In order to augment the stroke of the valve two or several rods joined together
by beams, multipliers or non-multipliers may be employed.
£ 1007
L. DUVINAGE,
Agent for Applicant.
Improvements in Steam Traps.
I, JUSTINIEN GRISLAIN, of 4, Passage de la Bibliotheque, Brussels, Belgium,
Mechanician, 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 invention consists in the use of metals or alloys whose difference of expansion
and contraction serves, by means of a valve, to open or shut an orifice through
which the waste-water must be ejected.
The apparatus called thermo-automatic steam trap may be used with tubes,
steam apparatus and cylinders.
In the annexed drawing,
Fig. 1 shows a vertical broken section through the axis of the steam trap.

page_text: Fig. 2 shows a vertical broken section of the same apparatus but provided with
two drawing rods.
Fig. 3 is a transverse section on line e f of Fig. 2.
Fig. 4 is a transverse section on line be of Fig: 1 and
Fig. 5 is a transverse section on line a d of Fig. 1.
The apparatus is composed of a tube A provided with a box B screwed at one
end, the said box having an opening which serves as a seat for a valve C. This
valve C is loosely fixed to a rod 1), this rod, which is placed in the tube A, passes
into a collar E with winglets upon which collar the rod is suspended by means of
a nut R.
The collar E rests on the tube A. Two other winged collars F and G serve to
guide the movement of the rod one of the collars, F, is fixed to the rod D and can
slide in the tube A and the other G is fixed in the tube A and allows the rod D to
slide.
The rod D is made of a metal which expands more than the metal of the tube A.
The lever H attached to the exterior of the apparatus, serves to lift the valve
and thus to allow the complete cleaning of the apparatus.
The valve has small holes or grooves m ny through which the waste-water is
ejected and which are stopped when the valve is at the bottom of its course.
When the apparatus is cold, the valve is lifted from its seat. As soon as the
steam penetrates into the apparatus, this latter becomes heated, and under the
action of the heat, its different organs expand. As the rod D expands more than
the tube A, the valve C takes its place on the seat and thus stops the holes m n y.
The pressure of the steam acting upon the valve causes the rod D to lengthen
downwards. When the valve is on its seat, the same pressure serves to keep it
there. Supposing that too great an expansion should take place, the loose play of
this rod D in the collar E allows the movement produced by the expansion, after the
rod has pushed the valve on its seat, to be made upwards.
When the steam condenses into the apparatus this latter cools down: the rod D
contracts more than the tube A and lifts the valve from its seat and the water
escapes.
The construction of the apparatus allows the escape of water at any desired
temperature; it suffices to raise or lower the box B.
By raising the box B the seat is drawn towards the valve; the effect of this is
to delay the escape of the water, for a greater quantity of water is required to work
the apparatus.
To increase the course of the valve, the apparatus can be constructed with two
or more rods whose expansion or contraction movements are combined by one or
more multiplying or non-multiplying balances. Fig. 2 of the annexed drawing
shows a vertical broken section of a steam trap provided with two expansion
rods D D and a balance 0. The pressure of the steam bears the valve C upon its
seat at the same time expanding the rods D, D¹ and drawing them, the first D from
top to bottom, the second I) from bottom to top by means of the balance O. In
case of a too great expansion the rods 1), 11 move in opposite direction and the
loose end of D prevents the rods from bending.
The profile section of the rods D may be round or square, or any other prismatic
form; the rods may be substituted by tubes, rolled up or twisted sheet-plates,
twisted wire and the like. For the construction of the apparatus I may employ
any metal or alloy. I may also make the tube, and rods in fragments of different
metals or alloys of metals.
The valve may have a conical, spherical, or flat seat.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
11 A
-
J

page_text: distinguished by a tube A in communication with the recipient to be cleared,
terminated by a box B whose bottom forms the seat of a valve C, this valve having
holes m n y for the ejection of the waste-water, these holes being stopped when the
valve rests upon its seat, this latter valve C being in loose connection with a rod D
made of a more expanding metal than that of the tube A, guided in this tube by
winged collars EFG and expanding under the action of the steam to push the valve
on its seat, and contracting in the presence of the condensed steam which cools the
apparatus, and thus lifts the valve C and allows the waste-water to pass through
the holes m n y; the course of the valve being increased by the use of two or more
expansion rods connected by multiplying or non-multiplying balances.
2) A steam trap for tubes, steam apparatus and cylinders, substantially as
described and shown.
1
T
1000
L. DUVINAGE,
Patent Agent, 8, Rue des Princes, Brussels, Belgium.