Improvements relating to Steam Traps.
Year: 1898

page_text: Date of Application, 10th June, 1898
Complete Specification Left, 6th Mar., 1899-Accepted, 10th June, 1899
DIONA DIPUTATION
Improvements relating to Steam Traps.
I, JOHN EDWARD LEWIS OGDEN, of Penshurst, Vernon Road, Leytonstone, in
the County of Essex, Engineer, do hereby declare the nature of this invention
to be as follows:-
My invention relates to steam traps and has for its object to provide a steam
tiap that shall be simple in design and that shall be positive, rapid and certain
in operation.
My invention consists of a steam trap in which the main valve is operated to
effect the escape of the accumulated water of condensation by the pressure of the
steam in the pipes drained by the trap, and by the pressure of the accumulated
water, forcing open the valve on the pressure behind it being temporally released
on the operation of a pilot valve permitted to be opened upon the contraction of the
casing or tube due to accumulation of water.
In carrving my invention into effect in the provision of a steam trap I employ
a tube of brass, copper or other such suitable metal or material, depending from,
or secured to the circuit of pipes required to be drained the lower end of such
tube being secured to a valve casing in which a diaphragm is provided, the peri-
pheral edge of which 18 retained and held by means of a flange cover suitably
bolted or otherwise secured to the casing, the cover being in such close proximity
to the diaphragm, that when the diaphragm 18 sprung out of its normal position
it shall preferably rest and be supported by the interior face of the cover
diaphragm is preferably corrugated and provided of thin flexible and elastic metal
or material such as copper, and has provided centrally thereon the main escape
valve which is maintained upon a seating provided upon the exit to which the
waste pipe 18 connected A perforation is formed in the diaphragm, or holes are
bored in the main valve so that water accumulating upon one side of the diaphragm
may slowly pass through to the other side and so maintain an equal pressure upon
that side
The
Upon the flange or cover, a pilot valve casing is centrally provided having a
passage or port leading from the space between the cover and the diaphragm which
is normally closed by means of a pilot valve which has its upper part preferably
of cylindrical form for the purpose of guiding the valve in the casing upon
operation by internal pressure as hereafter described.
An annular space 18 provided in the pilot valve casing which communicates
by means of a bye pass pipe passing round the steam trap casing to the waste
pipe The pilot valve 18 maintained upon its seat by means of a stop formed as
an adjustable stud upon the extremity of the longer arm of an operating lever
which in turn is maintained to close the valve by means of a spring suitably
disposed The smaller arm of this lever is diverted so as to receive the extremity
of an iron rod or rods of some other metal haying relative to that of the tube a

page_text: small ratio of expansion, the opposite end of the rod being held by means of a
stop or flange provided upon the upper extremity of the tube, such rod lying for
convenience in close proximity to such tube
In operation the water of condensation which accumulates in the tubes causes
the tube to contact and in the contraction causes the smaller end of the lever
to be forced for waid thereby relieving the pilot valve from the pressure of the
spring and thereby in course permitting the water that has previously percolated
or passed from the opposite side of the diaphragm to flow through the bye pass
to the waste pipe, thereby relieving the pressure behind the diaphragm and
permitting the pressure of the steam and the weight of the accumulated water to
force up the main valve from its seat and so permit the whole of the accumulated
water in the tube to rapidly pass through to the waste pipe, which done, the
tube immediately expands and on expansion relieves the pressure at the smaller
end of the pilot valve operating lever thereby permitting the pilot valve to be again
closed by means of the spring before referied to the pressure becoming equal
upon each side of the diaphragm so that the main valve closes upon its seat
In carrying my invention into effect according to another modification I may
dispense with the diaphragm and the valve provided thereupon and I may use
instead, a piston valve which 18 operated by steam upon the pressure of the
accumulated water upon one side thereof, being relieved by means of a pilot valvo
as hereinbefore described.
MARKS & CLERK,
18, Southampton Buildings, London, W.C, and
13, Temple Street, Birmingham, Agents
Improvements relating to Steam Traps.
I, JOHN EDWARD LEWIS OGDIN, of Penshurst, Vernon Road, Leytonstone, in
the County of Essex, Engineer, 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
-
My invention relates to steam traps in which the main valve is operated to
effect the escape of the accumulated water of condensation by the pressure of the
steam in the pipes drained by the trap, and by the pressure of the accumulated
water, forcing open the valve on the pressure behind it being temporarily released
in one manner on the operation of a pilot valve or the actuating of the valve stop
spindle which permits the valve to be opened upon the contraction of the casing
or tube due to accumulation of water
My invention has for its object to provide a steam trap that shall be simple in
design and that shall be positive, rapid and certain in operation and consists in
the arrangements and combinations hereinafter set forth and as illustrated in the
accompanying sheets of explanatory drawings.
In the accompanying sheet of explanatory drawings
Figure 1 is a sectional elevation of one form of pilot valve arrangement steam
trap construct, and
Figures 2 and 3 are similar views of modified forms of such traps
Figure 4 is a sectional elevation of one form of my improved tiap arranged
without a pilot valve, and Figure 5 18 a sectional elevation of the same type of
trap when arranged for a double beat valve.
In canying my invention into effect in the provision of a steam trap I employ
B tube A of brass, copper or other such suitable metal or material, depending

page_text: from or secured to the circuit of pipes required to be drained the lower end of
such tube being secured to a valve casing B in which a diaphragm C or piston
18 provided, the peripheral edge of the diaphragm being retained and held by
means of a flange cover, D, suitably bolted or otherwise secured to the casing, the
cover being in such close proximity to the diaphragm, that when the diaphragm C
18 sprung out of its normal position it shall preferably rest and be supported by
the interior face of the cover. The diaphragm 18 preferably corrugated and
constructed of thin flexible and elastic metal or other suitable material and has
provided centrally thereon the main escape valve E which is maintained upon a
seating B¹ provided upon the exit to which the waste pipe F is connected.
perforation is formed in the diaphragm or holes e are bored in the main valve E
80 that water accumulating upon one side of the diaphragm may slowly pass
through to the other side and so maintain an equal pressure upon that side.
A
Upon the flange or cover, a pilot valve casing G is centrally provided having a
passage or poit 9 leading from the space between the cover and the diaphragm
which is normally closed by means of a pilot valve H which has its upper part
preferably of cylindrical form H' for the purpose of guiding the valve in the casing
upon operation by internal pressure as hereinafter described
An annular space h 18 provided in the pilot valve casing which communicates
by means of a bye pass pipe K passing round the steam trap casing to the waste
pipe, or its branch B. The pilot valve H 18 maintained upon its seat by means
of a stop L formed as an adjustable stud upon the extremity of the longer arm M¹
of an operating lever M which in tuin is maintained to close the valve by means
of a spring N suitably disposed. The smaller aim M³ of this lever is diverted
so as to receive the extremity of an iron rod 0 or 1ods of some other metal having
relative to that of the tube A a small ratio of expansion, the opposite end of the
rod being held by means of a stop or flange P provided upon the upper extremity
of the tube A such rod lying for convenience upon or in close proximity to such
tube
In Figure 2 Illustrate a modification of my improved trap in which the
expanding and contracting bar O rests upon the surface of the collecting tube A,
the lever M being also modified in its position and the valve H carried in a
somewhat different manner Instead of employing a diaphragm as at C Figure 1
I may use a piston headed valve E¹ having holes e for the steam to pass through
its upper head so as to act in a partially balanced manner upon its upper surface
the valve head working up and down in a gland R of woodite or other suitable
material, the pilot valve relief or waste passes by the passage K¹ to the exhaust
side of the valve B³ of the valve casing
In operation the water of condensation which accumulates in the tube A causes
the tube to contract and in the contraction causes the smaller end M* of the lever M
to be forced forward thereby relieving the pilot valve H from the pressure of the
spring N and thereby permitting the water that has previously percolated or
passed from the opposite side of the diaphragm C or piston E¹ to flow through
the bye pass K or K¹ to the waste pipe, thereby relieving the pressure behind the
diaphragm or piston and permitting the pressure of the steam and the weight of
the accumulated water to force up the main valve E from the its seat and so
permit the whole of the accumulated water in the tube A to rapidly pass through
to the waste pipe, which done, the tube A immediately expands and an expansion
relieves the pressure at the smaller end M of the pilot valve operating lever
thereby permitting the pilot valve to be again closed by means of the spring N
before referred to the pressure becoming equal upon each side of the diaphragm or
piston so that the main valve closes upon its seat
Figure 3 is a sectional elevation of one form of my improved steam trap in
which the pilot valve H is employed with the spring loaded lever M and adjustable
stop Las before described but in which the main valve Es provided with a loose
fitting piston head E under and above which the steam acts to keep the valve E
on its seat until the thermostatic rod O is contracted and the lever M and its stop L

page_text: caused to be raised slightly from the head of the pilot valve H
When this
movement arises the steam above the piston head E escapes through the pilot
valvo and its port K and thereby reduces or alters the balancing effect upon the
main valve E thus causing the pressure below to lift that valve so as to readily
draw off the accumulated water of condensation from the tube A into the exhaust
Pipe F
When making a simpler form of steam tiap for smaller capacities of water
collection I anange a tube A as shown in Figure 4 and mount my thermostatic
rod or iods 0 and 0 with the outer ends carried in a collar S pivoted at S¹
upon the end flange, and with the inner ends carried, one 0¹ against the smaller
end M of the lever M while the other (3 18 canned against the casing B³ of the
valve body The object of this double or multiple arrangement of expanding
bar is to multiply the travel of the end of the lever so that a greater lift may
be given to the outer end of the lever and the spindle stop T thus caused to be
raised when the pressure below the single valve E or the double beat valve Ę*
Fig 5 is allowed to operate and to lift the valve for the water to pass through
the valve opening direct without further passage or pilot valve action being
provided
I may arrange only one 1od 01 to act upon the end Ms of the lever employing
the same single valve E' or a multiple beat valve E³ and stop spindle or holding
down pin T as before described when constructing the smaller sizes of steam traps.
I modify the shape and size of my thermostatic 'bars and the form and propor
tions of my tubes or collecting chamber also the arrangement of my pivoted spring
loaded lever to act upon the valve, to suit the capacity and conditions of working
of my improved steam trap for any particular requirement
My improved valve possesses the advantage of being uniformly reliable without
readjustment when working with varying pressure of steam
So that when once
the valve 18 set to work at any determined pressure it will remain equally
effective when the pressure is considerably reduced or temporarily increased,
beyond the maximum working pressure
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 16-
1 The improvements in expansion steam traps having a pivoted spring loaded
lever one end of which receives the thrust or follows the movement of a ther-
mostatic 1od or 1ods while the other end receives a pilot valve upon its seat within
the valve chamber or casing substantially as and for the purposes herein before
described and as illustrated in the accompanying drawings
2 In steam traps the combination of a pilot or relief valve controlled by a
pivoted and adjustably spring loaded lever against which a thermostatic or
expansion 1od presses with a main or water discharge or outlet valve arranged in
the same casing or chamber, and having a bye pass or escape passage for allowing
the steam from the pilot valve to be exhausted into the outlet branch of the trap
substantially as horenbefore described and as illustrated in the accompanying
drawings
3 In expansion steam traps the combination and arrangement of a pivoted
adjustably spring loaded lever with an expanding rod or iods for controlling the
movement of the main or water discharge valve substantially as hereinbefore
described and as illustrated in the accompanying drawings.
Dated
this vul day of
1050
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.