Triple Valve Page: 3 of 5
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UNITED STATES PATENT OFFICE.
WILLIAMSON D. ANDERSON, OF EL PASO, TEXAS, AND EDWARD J. SHEARER, OF
LORDSBURG, NEW MEXICO.
TRIPLE VALVE.
1,035,297. Specification of Letters Patent. Patented Aug. 13,1912.
Application filed July 7, 1910, Serial No. 570,839. Renewed January 29, 1912. Serial No. 674,198.To all whom it may concern:
Be it known that we, WILLIAMsoN D.
ANDERSON and EDWARD J. SHEARER, citi-
zens of the United States, residing at El
5 Paso, in the county of El Paso and State of
Texas, and Lordsburg, Grant county, New
Mexico, respectively, have invented certain
new and useful Improvements in Triple
Valves; and we do declare the following to
10 be a full, clear, and exact description of the
invention, such as will enable others skilled
in the art to which it appertains to make
and use the same.
This invention relates to improvements in
15 triple valves for air brakes.
The object of the invention is to improve
the construction of triple valves whereby the
auxiliary reservoir of the brake mechanism
may be recharged to the maximum pressure
20 after the brakes have been set and while
they remain set thus giving the engineer
complete control of the brakes at all times
and dispensing with the necessity of pro-
viding the usual pressure retaining valves.
25 Another object is to provide an improve-
ment or attachment of this character which
may be applied to any form of triple valve
without interfering with the other portion
of the valve or in any way changing the
30 construction of the piping or brake rigging
of the air brake apparatus.
A further' object is to provide an attach-
ment of this character which will be simple
and inexpensive in construction, efficient and
35 reliable in operation and which may be
quickly and easily applied to triple valves
now in use.
With these and other objects in view the
invention consists of certain novel features
40 of construction, combination and arrange-
ment of parts as will be more fully de-
scribed and particularly pointed out in the
appended claims.
In the accompanying drawings: Figure 1
45 is a longitudinal sectional view through a
portion of a triple valve having our in-
vention applied thereto and showing the
main piston of the valve in the position it
occupies when the brakes are released; Fig.
50 2 is a similar view showing the position ofthe piston during an emergency application
of the brakes; Fig. 3 is a similar view show-
ing the position for the service application
of the brakes; Fig. 4 is a similar view show-
ing the piston in "lap position." Fig. 5 55
is a cross sectional view of the valve on
the line 5-5 of Fig. 2; Fig. 6 is a horizon-
tal sectional view on the line 6-6 of Fig. 5;
Fig. 7 is a detail sectional view through the
attachment on the line 7-7 of Fig. 5. 60
In carrying out the invention, we form
in the casing of the triple valve two ports
1 and 2 which open into the chamber 3 con-
taining the main piston 4 of the triple valve.
The ports 1 and 2 are arranged in such posi- 65
tion that when the piston is in the full re-
lease position both of said ports will be on
the trainpipe side of the piston as shown in
Fig. 1 of the drawings and when the piston
is in the positions for setting the brakes 70
either for an emergency stop or a service
stop the ports 1 and 2 will both be on the
auxiliary reservoir side of the piston as
clearly shown in Figs. 2 and 3 of the draw-
ings. When the piston is in a "lap posi- 75
tion " or a position where the pressures on
the trainpipe side thereof and the auxil-
iary reservoir side thereof are equal the ports
1 and 2 will be on opposite sides of the pis-
ton as shown in Fig. 4 of the drawings, the 80
latter position of the piston being the only
one in which our improvement is intended to
or will operate.
On one side of the triple valve casing over
the ports 1 and 2 and connecting the latter 85
is a valve casing 5 forming part of our im-
provement. The valve casing 5 is provided
with ports 6 and 7 which communicate re-
spectively with the ports 1 and 2 in the
triple valve casing. The casing 5 of our 90
improvement or attachment is open at one
end and in said open end is arranged a screw
plug or cap 8 which is adapted to be re-
moved to permit the parts to be placed in the
valve casing 5 and which when in place 95
holds the parts in position in said casing.
In the valve casing 5 is arranged valve
seats 9, 10 and 11 with which are operatively
engaged valves 12, 13 and 14. The valves
12, 13 and 14 are formed or arranged on a 100
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Anderson, Williamson D. & Shearer, Edward J. Triple Valve, patent, August 13, 1912; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth511454/m1/3/: accessed June 30, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.