Improvements in or connected with Steam Traps.
Year: 1893

page_text: Date of Application, 21st Nov., 1893
Complete Specification Left, 13th Jan., 1894-Accepted, 24th Mar., 1894
PROVISIONAL
SPECIFICATION.
Improvements in or connected with Steam Traps.
We, HENRY COOMBS of 576, Woolwich Road, Charlton, Sanitary Engineer,
WILLIAM BURLEY of 83, Pelton Road, Greenwich, Millwright and Engineer,
and WILLIAM NICHOLAS SELF, of 612, Woolwich Road, Charlton, Hot Water
Engineer, all in the County of Kent, do hereby declare the nature of this invention
to be as follows:-
:―
Our invention relates to improvements in or connected with steam traps.
According to our invention we provide the outlet from the steam trap with a
valve seating having a port or opening therein cominunicating with said outlet, the
valve seating being adapted to receive a sliding plate or slide-valve that is capable
of being operated, and its position controlled, by a pivotted lever furnished at its
free end with a hollow ball or float. The whole is enclosed within a box or chest
into which the water of condensation is received, said box or chest being furnished
with a steam tight cover and a relief valve. When the before-mentioned pivotted
lever rises, the sliding plate or slide valve is caused to uncover the outlet port in
the valve seating and thus permit the water in the box or chest to escape.
Dated the 21st day of November 1893.
WM. MELLERSH-JACKSON,
75, Chancery Lane, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or connected with Steam Traps.
We, HENRY COOMBS of 576, Woolwich Road, Charlton, Sanitary Engineer,
WILLIAM BURLEY of 83, Pelton Road, Greenwich, Millwright and Engineer,
and WILLIAM NICHOLAS SELF of 612, Woolwich Road, Charlton, Hot Water
Engineer, all in the County of Kent, 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 :-
Our invention relates to improvements in or connected with steam traps.
According to our invention the outlet passage, through which the water of
condensation escapes from the steam trap, is formed with a flange or enlarged
portion constituting a slide surface or valve seating which is adapted to receive
a sliding plate or slide valve. The slide surface or valve seating is provided
with a port or opening communicating with the outlet passage and the position
of the sliding plate or slide valve with relation to this port or opening is controlled
by a pivotted ball- or float-lever. The whole is enclosed within a box or chest,
into which the water of condensation and steam enter, said box or chest being
furnished with a steam tight cover and a relief valve.
In order that our said invention may be more fully understood and readily carried
into effect we will proceed to describe the drawings hereunto annexed.

page_text: Figure 2 is a vertical longitudinal section of the outlet passage shewing more
clearly the construction thereof and the parts connected therewith, and
Figure 3 is a vertical transverse section taken on the line of Figure 2.
Figures 4, 5 and 6 are detail figures shewing respectively end view, side elevation,
and plan of the valve employed in this construction.
A is the box or chest which receives the water of condensation and B is its cover
which is firmly secured thereto so as to be steam-tight.
Z
a is the water outlet, and is the inlet for the water of condensation and steam.
The inner end of the outlet consists of a bent portion a* as seen at Figures 1 and 2
and its inner extremity is formed with a flanged or enlarged portion which is
adapted to serve as an inclined slide surface or valve seating a for the sliding
valve b. This valve consists of a plate, having a smooth face, the side edges of
which are advantageously slightly tapered so as to fit into and slide between the
correspondingly tapered or dovetailed side pieces a a² (Figure 3) of the slide
surface or valve seating. The back of the valve is formed with a pair of horns
or projections, between which a tee-piece c', carried by the lever, works and
thereby operates the valve. The horns or projections may if preferred be
provided with pins which will serve to prevent the tee-piece from becoming
disengaged from the horns. The lever c is pivotted at 2 to the bent arm a³, and
its free extremity is furnished with a hall or float 3. The face of the inclined slide
surface or valve seating is formed with a port or opening at (Figures 2 and 3)
which communicates with the outlet a. The front end of the sliding valve is cut
away at so as to decrease the amount of lap on this side of the port.
As the level of the water of condensation rises in the box or chest A, the ball
or float and its lever also rises, thereby (through the intervention of the tee-
piece c' and horns or projections 6') actuating the valve and causing it to slide
in the direction of the arrow (Figure 1) and thereby more or less uncover the
port a
The contents of the chest A are then free to escape through said
port, after the valve d has opened to admit air to the chest, said valve being
arranged to open when the pressure within the chest is below that of the
atmosphere.
It will be obvious that although we have shewn and described a rectilinear
reciprocating valve, we may in some cases, where found advantageous, employ a
rotary reciprocating valve without departing from the nature of our invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. A steam-trap in which the water of condensation is allowed to escape there-
from by means of a sliding plate or valve working on an inclined slide surface
or valve seating formed on and communicating with the outlet passage, said sliding
plate or valve being controlled by a ball or float lever, substantially as herein-
before described and shewn.
2. In a steam-trap of the kind herein referred to, the combination of an inclined
slide surface or valve seating such as a' having an outlet port or opening; a sliding
valve such as b working on said slide surface or valve seating; and a pivotted ball
or float lever such as c for actuating said valve, substantially as hereinbefore
described and shewn.
3. Our improvements in or connected with steam-traps substantially as herein-
before described and shewn by the annexed drawings.
Dated this 13th day of January 1894.
WM. MELLERSH-JACKSON,
75, Chancery Lane, London, W.C., Agent for the Applicants.