Year: 1898

page_text: The invention has for its object the production of a simple and reliable auto-
matic reservoir steam trap.
For this purpose I construct the body of the trap with a steam inlet leading
to a valve communicating with a chamber for the reception of water of conden-
sation.
This chamber communicates with the interior of a doma connected with the
body of the trap and made preferably of thin copper to enable it to act as an
air-condenser.
The body of the trap is also provided with an outlet passage communicating
at its inner end with a discharge tube rising to near the top of the condensing
dome and the condensation water chamber in the body of the trap which is
provided with a detachable hermetically sealed expansible corrugated capsule
charged with a volatile fluid, the valve is pressed down on to such capsule by a
spring and the capsule rests on a support acted upon by an adjusting screw
whereby it can be readily raised or lowered.
The bottom of the condensation water chamber is removable to enable the
ready insertion and removal of a capsule.
The action of the trap is as follows:-
Steam is admitted to the inlet and the products of condensation are discharged
through the valve opening into the condensation water chamber whence it rises
into the condensing dome which latter acting as an air-condenser cools the water
and thus causes circulation.
Thus the hottest fluid rises in the dome to the top of the discharge tube and
the coolest descends to the corrugated capsule upon which it acts with a constant
tendency to contract the same and thereby cause the valve to open slightly and
practically feel for steam, a slight amount of which is necessary to keep the
capsule fully expanded.
1000

page_text: and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
The invention has for its cbject the production of a simple and reliable auto-
matic reservoir steam trap.
My invention is illustrated in the accompanying drawings, in which; -
Fig. 1 is a vertical section, Fig. 2 an end elevation and Fig. 3 a plan (with
the condensing dome removed), of my improved steam trap, and Fig. 4`is a
plan of part thereof separately.
For this purpose I construct the body a of the trap with a steam inlet b lead-
ing through a passage to a valve e communicating with a chamber d for the
reception of water of condensation. This chamber d communicates with the
interior of a dome e connected with the body a of the trap and made preferably
of thin copper to enable it to act as an air condenser. The body a of the trap
is also provided with an outlet passage f communicating at its inner end with a
discharge tube rising to near the top of the condensing dome c. The conden-
sation water chamber in the body of the trap is provided with a detachable
hermetically sealed expansible corrugated capsule charged with a volatile
fluid. The valve c is pressed down on to such capsule by a spring i, and the
capsule rests on a support acted upon by an adjusting screw k, whereby it can
be readily raised or lowered. The bottom d' of the condensation water chamber d
is removable to enable the ready insertion and removal of a capsule h.
The action of the trap is as follows. Steam is admitted to the inlet b, and
the products of condensation are discharged through the valve c opening into
the condensation water chamber d, whence the water rises into the condensing
dome e, which latter, acting as an air condenser, cools the water and thus causes
circulation of the water within the chamber d and dome e. Thus the hottest
fluid rises in the dome e to the top of the discharge tube g, and the coolest
descends to the corrugated capsule h, upon which it acts with a constant tendency
to contract the same and thereby cause the valve c to open slightly and practically
feel for steam, a slight amount of which is necessary to keep the capsule h fully
expanded.
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. In a steam trap, the combination of a body formed with a steam inlet, a
passage from said inlet to the interior of the trap, a valve at the inner end of
said passage, a chamber for condensation water into which such valve opens,
a detachable hermetically sealed expansible chamber containing volatile fluid
supporting said valve, a condensation dome of thin metal attached to the body
of the trap and communicating with the chamber for condensation water, a
discharge pipe rising within the condensation dome nearly to the top thereof to
secure circulation of the water within the trap, and an exit passage in the
body of the trap communicating with said discharge pipe, substantially as here-
in set forth.
2. In a steam trap, the combination of a body formed with a steam inlet, a
passage from said inlet to the interior of the trap, a valve at the inner end of
said passage, a chamber for condensation water into which such valve opens, a
detachable hermetically scaled expansible chamber containing volatile fluid
supporting said valve, an adjustable support for said expansible chamber a spring
to keep the valve in contact with said expansible chamber, a removable bottom
to the body of the trap to permit of access to the interior thereof, a condensation
deme of thin metal attached to the body of the trap and communicating with
the chamber for condensation water, a discharge pipe rising within the conden-
sation dome nearly to the top thereof to secure circulation of the water within
the trap, and an exit passage in the body of the trap communicating with the
lower end of said discharge pipe, substantially as herein set forth.

page_text: 3. In a steam trap, the combination of a steam inlet passage, a valve at the
inner end of said inlet passage, an expansible chamber containing expansible
fluid acting upon said valve, a condensation water chamber into which the valve
opens, a condensing dome communicating with said condensation water chamber,
and a discharge tube communicating with the exit passage and rising within
the condensation dome nearly to the top thereof to secure circulation of the
water within the trap, substantially as herein set forth.
4. In a steam trap having a steam inlet passage, a valve at the inner end of
said inlet passage, an expansible chamber containing expansible fluid acting upon
said valve, and a condensation water chamber into which the valve opens, the
combination therewith of a condensing dome communicating with said conden-
sation water chamber, and a discharge tube communicating with the exit passage
and rising within the condensation dome nearly to the top thereof to secure cir-
culation of the water within the trap, substantially as herein set forth.
Dated this 24th day of February 1899.
HARRIS & MILLS,
23, Southampton Buildings, London, Agents.