Feed-Valve for Compensating for Leakage in Train-Pipes. Page: 3 of 3
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
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601,602
the main-piston rod to close the upper valve-
seat with valve J. The neck of the valve may
have a bushing S, but it can be constructed
without such bushing. The chamber or space
5 T is about one - quarter of an inch, so that
the valve J will have about one-fourth of an
inch travel. The space or chamber U is also
about one-fourth of an inch and is provided
with a port V about one-quarter of an inch
io for receiving main-reservoir pressure.
The operation of the valve may be described
as follows: This valve is mounted in a con-
venient place on the engine adjacent to the
usual parts forming the air-brake apparatus
15 and connected with the main reservoir by
means of port V, with train-line by means of
port h, and with the little drum or brake-
valve reservoir by means of port d, and is
never brought into operation unless there is
20 a leakage of the train-line while the brakes
are applied. When a leak commences, the
pressure in chamber F decreases and the pis-
ton will follow the weaker pressure. The
piston will be driven by pressure from the
25 brake-valve reservoir and the piston-rod will
raise valve J just enough to supply the leak,
the pressure coming from the main reservoir
through port V and under the valve J through
passage K. In emergency applications the
30 piston C forces valve J to its upper seat and
holds it closed. Consequently no pressure can
come from the main reservoir into the train-
pipe. This causes the brakes to be held in
application with the greatest power. The
35 pressure in chambers T and U will be ninety
pounds and in chambers F and F' will be
seventy pounds. Consequently when valve
J is opened the greater pressure in chambers
T and U will force its way into chamber F,
40 thence into the train-pipe.
Having fully described our invention, what
we claim as new, and desire to secure by Let-
ters Patent, is-
1. A feed-valve to compensate leakage in
45 train-pipes of fluid-pressure brake systems,
said valve having a suitable chamber and a
piston therein, a train-pipe connection on one
side of said piston, a brake-valve-reservoir
connection on the other side, a main air-res-
5o ervoir connection in the other end of said
chamber, a valve adapted to cut off said
connection from said train-pipe connection,
and means for opening said valve, whereby
air may be fed from the main air-reservoir to
55 the train-pipes.
2. A feed-valve to compensate leakage of
train-pipes in fluid-pressure brake systems,
said valve having a chamber divided into a
plurality of apartments, a piston provided
6o with a suitable rod in one end of said cham-
ber, a brake-valve-reservoir connection on
one side of said piston, a train-pipe connec-
tion on the other side, a valve mounted in the
other end of said chamber, provided with two
65 seats, and means for operating and closingsaid valve whereby connection is made with
the main reservoir, said means consisting of
said piston and rod and a stem projecting
from said valve.
3. A feed-valve for compensating the leak- 70
age of train-pipes in fluid-pressure brake sys-
tems, said valve having a suitable casing pro-
vided with a plurality of chambers, a main
air - reservoir connection with one of said
chambers, a train - pipe connection, and a 75
brake-valve-reservoir connection, a piston op-
erating between said last-named connections,
a valve for feeding fluid-pressure from said
main air-reservoir connection to said train-
pipe connection, the piston-rod of said piston 8o
being adapted to open said valve when a leak-
age in the train-pipe commences.
4. A feed-valve for compensating leakage
of train -pipes in fluid -pressure brake sys-
tems, said valve having a suitable casing pro- 85
vided with a chamber and a connection there-
with of the brake-valve reservoir, and a con-
nection therewith of the train-pipe, a piston
in said chamber operating between the pres-
sure from said connections, a main air-res- 90
ervoir connection, a plug having a passage
therethrough, separating the pressure from
said connection from the pressure from said
train-pipe, a valve for closing said passage,
said valve being provided with an upper seat, 95
whereby pressure is cut off from said main
air-reservoir in emergency applications, and
means for operating said valve.
5. A feed - valve provided with suitable
chambers for compensating the loss by leak- too
age of train-pipes in fluid-pressure brake sys-
tems, said chambers having connections with
the train-pipe and the brake-valve reservoir,
a piston separating the pressures from said
connections, a main air-reservoir, a bushing 105
having a passage therethrough and a valve-
seat therein, a valve adapted to rest in said
seat and to cut off the supply of pressure from
said main air-reservoir, said valve having a
stem provided with wings to aid in holding 110
the stem in correct alinement, said piston-
rods having wings for guiding said rod.
6. In a feed - valve for compensating for
leakage in train-pipes provided with a suit-
able casing, the combination of a brake-valve- 115
reservoir connection, a train-pipe connection,
a piston operating between said connections,
a main air-reservoir connection, and a valve
for opening and closing said last-named con-
nection whereby pressure in the train-pipes 120
is restored to the pressure in the brake-valve
reservoir by pressure flowing from the main
air-reservoir connection.
In testimony whereof we set our hands in
the presence of two witnesses.
COMMODORE P. TIPTON.
DAVID B. TIPTON.
Witnesses:
A. L. CARR,
O. C. MULKEY.
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Tipton, Commodore P. & Tipton, David B. Feed-Valve for Compensating for Leakage in Train-Pipes., patent, March 29, 1898; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512082/m1/3/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.