Improvements in Steam Traps, also applicable to Boiler Feed Water Apparatus.
Year: 1898

page_text: Date of Application, 2nd Apr.; 1898
Complete Specification Left. 31st Dec. 1898 -Accepted. 25th Mar., 1899
[Communicated from abroad by A. A. GRIFFING IRON COMPANY, of 449, Com-
"munipaw Avenue, Jersey City, United States of America, Manufacturers.]
Improvements in Steam Traps, also applicable to Boiler Feed Water
Apparatus.
1.
נ'
I, WILLIAM OLIPHANT, of 21, "Clifford Street, in the County of the City of
Glasgow, North Britain, Engineer, do hereby declare the nature of this invention
to be as follows;
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This invention relates to an improvement in steam traps.
In carrying out my invention, I provide a frame to which there is pivoted a
lever on which there is carried a ball or counterbalance weight. In this frame
there is a pear shaped bowl, the narrow end of which is connected to a check valve
through which the water of condensation passes into the bowl by means of a pipe
carried up in the inside of the bowl. When the bowl becomes nearly full, the
weight of the water over-balances the weight of the ball on the lever and the bowl
settles in the frame. On doing this, it opens the valve through which the steam
from the boiler enters into the trap, closing, the check valve already referred to
and equalizing the pressure on trap and boiler. Now that trap and boiler have
equal pressure and trap sets above water line of boiler the water them flows by
means of gravity out of the trap through another check valve into the boiler.
After the trap has emptied the counterbalance weight raises the bowl and closes
the steam valve and opens the air valve under steam valve and the condensation
water again flows through first mentioned check valve into trap, the other check
valve being closed by boiler pressure.
When trap is used as a boiler feeder, or from any other source of supply, in
place of steam pump, connection is made from feed water heater to first mentioned
check valve and water enters boiler the same way. I also provide a steam relief
valve.
1
10
1
1000
Improvements in Steam Traps, also applicable to Boiler Feed Water
Apparatus,
I, WILLIAM ŎLIPHANT, of 21, Clifford Street, in the County of the City of
Glasgow, North Britain, Engineer, do hereby declare the nature of this invention

page_text: and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
This invention relates to an improvement in steam traps.
I will now describe my invention reference being made to the accompanying
sheet of drawings shewing a side elevation partly in section and partly in elevation
of a steam trap constructed in accordance with my invention.
In carrying out my invention, I provide a frame A to which there is pivoted
at a lever B on which there is carried a ball or counterbalance weight C. In
this frame there is a pear-shaped bowl D, the narrow end of which is connected to
a check valve not seen in the drawings but placed at the point indicated by the
letter E, and through which by the trunion opening E¹ the water of condensation
passes into the bowl D by means of a pipe F carried up in the inside of the bowl D.
When the bowl D becomes nearly full, the weight of the water overbalances the
weight of the ball C on the lever B and the bowl settles in the frame A. On doing
this, it opens the valve G through which water of condensation flows down the
pipes and F, through the said valve G, and into the boiler until it is quite
emptied of its contents when the check valve already referred to becomes opened,
the pressure being alike in trap and boiler. After the trap has emptied the
counterbalance weight raises the bowl and opens the check valve E when the
condensation water again flows through first mentioned check valve E into trap,
the other check valve G being closed by boiler pressure.
When trap is used as a boiler feeder, or from any other source of supply, in
place of steam pump, connection is made from feed water heater to first mentioned
check valve and water enters boiler the same way. I also provide a steam relief
valve.
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:
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In steam traps the general arrangement, combination, and operation of the parts,
all substantially as described and illustrated on the accompanying sheet of draw-
ings.
ated this 28th day of December 1898.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Patent Agents.