Valve for Car-Carried Mechanism of Train-Stopping Apparatus. Page: 5 of 6
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1,146,080
intersecting the passages 112 and 113 and
rotatably mounted within the bore is a turn
plug 114 provided with a port 115 adapted
to open the passage 112 and with a port 116
5 designed to open the passage 113, one end
of the plug being provided with an operat-
ing handle 117. Connected to one end of
the passage 113 is an audible signal as a
whistle 118, while connected to the opposite
10 end of such passage is a fluid conducting
pipe 119 tapped into the main air reservoir
of the air brake system or other source of
fluid supply. In the normal condition of
the valve 110, the plug 114 is in the position
15 shown in Fig. 3 so that communication be-
tween the rear end of the cylinder and the
atmosphere, by way of the pipe 109, is cut
off and communication between the whistle
118 and the source of fluid supply cut off.
20 On the other hand, when the valve plug is
rotated through one-half a revolution, the
port 115 opens the passage 112, while the
port 116 opens the passage 113 thereby per-
mitting the air to flow from the cylinder to
25 the atmosphere by way of the pipe 109
and the fluid from the source of supply to
pass through the whistle 118 and so sound
the latter. As long as the valve 110 is in
this position the whistle sounds thereby ad-
30 vising the engineer that the fluid end of the
cylinder of the motor is in communication
with the atmosphere so that such engineer
may restore the valve 110 to normal position
and so put the car carried stopping mecha-
35 nism in condition for further operation.
Upon the release of the pressure from the
fluid side of the cylinder 63 the throttle
valve moves to open position under the
action of the spring 84, while the piston
40 within said cylinder is restored to normal.
An outwardly opening pressure operated
valve 120 is connected to each valve casing
93 below the valve seat 94 at a point dia-
metrically opposite the branch pipes 101
,5 and opens under the pressure of the air
from the train line air pipe or brake pipe
immediately succeeding the piston within
the cylinder 63 completing its movement to
close the throttle valve, whereby the pres-
50 sure in the brake pipe is reduced to cause an
application of the brakes.
In order to maintain the throttle valve in
closed position succeeding the movement of
the piston within the cylinder 63 so as to
55 prevent opening of the valve in the event of
the air behind the piston within the cylinder
63 escaping, I employ an automatic catch
121. In the present instance, this catch em-
bodies a pair of horizontal spring arms 122,
60 122 spaced apart in parallelism and each
having one end thereof fastened to a block
123 depending from the outer end of the
guide tube 66, while the confronting faces
of the spring arms adjacent to the free ends
G5 thereof are equipped with coperating dogs124 having the adjacent faces inclined to
form an entrance mouth. By means of this
construction, it will be seen that when the
lug 68 moves outwardly under the action
of the piston within the cylinder 63, such 70
lug will ride. into the space between the
arms 122, 122 by way of the entrance mouth
formed by the adjacent faces of the dogs
124, the dogs springing back into place, suc-
ceeding the passing of the lug 68 into the 75.
arms, whereby accidental movement of the
piston within the cylinder 63.to normal po-
sition is prevented. Mounted upon a pin
disposed between the arms 122 is an oblong
button 125 adapted to be rotated by the en- 80
gineer or motorman of the engine or car to
swing the arms 122, 122 outwardly when it
is desired to relieve the lug 68 of the influ-
ence of the dogs 124.
While I have herein shown and described 85
one preferred form of my invention by way
of illustration, I wish it to be understood
that I do not limit or confine myself to the
precise details of construction herein de-
scribed and delineated, as modification and 90
variation may be made within the scope of
the claims without departing from the spirit
of the invention.
I claim:
1. In train stopping apparatus, a throttle 95
valve comprising a casing having a valve
seat formed therein, a valve disk movable
into and out of engagement with said seat,
a stem passed through said seat centrally
thereof and through said valve disk, a col- 100
lar on the upper end of said stem, a spring
encircling the stem and holding said disk
normally in engagement with the collar
whereby the disk will move with the stem,
means for reciprocating said stem to move 105
the disk into and out of engagement with
the seat, and means for sliding said disk
along said stem against the action of said
spring to engage the disk with the seat inde-
pendently of said stem. 110
2. In train stopping apparatus, a throttle
valve comprising a casing having a valve
seat formed therein, a valve disk movable
into and out of engagement with said seat,
a stem passed through said seat centrally 115
thereof and through said valve disk, a col-
lar on the upper end of said stem, a spring
encircling the stein and holding said disk
normally in engagement with the collar
whereby the disk will.move with the stem, 120
means for reciprocating said stem to move
the disk into and out of engagement with
the seat, a ring encircling said stem and
bearing upon the same face of said disk as
said collar, and means for actuating said 125
ring to slide said disk along said stein into
engagement with said seat independently
of the movement of said stein.
3. In train stopping apparatus, a throttle
valve comprising a casing having a valve 1 SQ3
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Reference the current page of this Patent.
Labit, Girard E. Valve for Car-Carried Mechanism of Train-Stopping Apparatus., patent, July 13, 1915; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth859600/m1/5/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.