Automatic Stopping Mechanism for Trains Page: 3 of 4
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UNITED STATESPATENT OFFIC4,.
WILLIAM MINGO, JR., OF WEIMAR, TEXAS.
AUTOMATIC STOPPING MECHANISM FOR .'fRAINS.
973,954. Specification of Letters Patent. Patented Oct. 25, 1910.
Application filed September 23, 1908. Serial No. 454,359.To all whom it may concern:
Be it known that I, WILLIAM MINGO, Jr.,.
a citizen of the jUnited. States, residing at
Weimar, in the county .of. Colorado and
5 State of Texas, have invented new and .use-
ful Improvements in Automatic Stopping
Mechanism for Trains, of which the follow-'
ing is a specification.
This invention relates to' automatic stop-
10 ping mechanism for trains, and has for af
object to provide mechanism of this charac-
ter which may be applied to a'locomotive'
cab, and which, when in operation, will au-
tomatitally apply the air brake valve, the
15 sanding valve, the throttle valve,' and a
whistle.
A further object of this invention is to
provide a car mechanism adapted for the
purpose set forth above with. means so that
20 it can be operated by simple and effective
means located at suitable points along the
line..
A further object is to provide meats ne-
cessitating the engineer's attention to lights
25 or signals ahead, providing means whereby
the' engineer can obviate ,automatic stop-
page of the trains should' he have a clear
track, or in other words, a train will be au-
tomatically stopped at predetermined points
30 if the engineer is inattentive.
A further object is to provide- automatic
meais for restoring the mechanism and
holding the same normally in an operative
position.
35. Other objects and advantages will be ap-
parent as the nature-of the invention is bet-
ter disclosed and it will be understood that
changes within the scope of the' claim may
be resorted to without departing from the
40 spirit of the invention.
In the drawings forming a portion of this
specification, and in which like numerals of
reference indicate similar parts in the sev-
eral views, Figure 1 i a side view with
45 parts in section showing the application of
the present invention to a locomotive. Fig.
2 is a vertical section through the cab of the
locomotive. Fig. 3 is a perspective view" of
the throttle lever. Fig. 4 is a perspective
5o view of one,of the trip elements.
Referring now more particularly to the
drawings, there is shown a locomotive 1
provided with a steam dome 2 and a sand
dome 3. The locomotive cab indicated at 4,
55 is of usual construction, and the head 5 for
the boiler of the locomotive is providedwith a throttle rack 6 adapted to receive a
sprin'g- pyessed dog 7 carried by a throttle
valve le er 8, adapted to operate the valve
9 which may .be .of the usual construction. 60
A -pulle 10. is mounted upon the head 5 of
a locomotive boiler an.d' is disposed in line,
with. the free -end of the lever 8.
Hangers or brackets 11 and 12 extend
from beneath the cab, and as shown, the said. 65
hangers are provided with alining bearings.
13 . adapted to receive a horizontally. dis-
posed shaft 14 which extends transversely
of the locomotive. The. shaft 14 extend
outwardly aW:considerable distance beyond 70
the hanger 14 arid is provided with.. a de-.
pending finger 15 for a purpose to be here-
inafter' described. The shaft has secured
thereto drums 16 and 17, which are mounted
concentrically, and adjacent to. the hanger 7L
12 an eccentrically mounted drum 18 which
is thus adapted.-to' hold the finger 15 nor-
mally in. the position shown in Fig. 2,of
the drawings. The drum 18 has secured
thereto .one end of a chain or flexible ele- 80
ment 19. which -is passed around the pulley
10, and the other end of the said chain or
element is 'connected to a bail 20. The bail
20 is connected as shown at 21 to the dog
controlling element 23 pivotally mounted 85
'upon the 'throttle valve lever 8.
The usual air brake triple valve is shown
at 24 and carries an operating lever 25 which
has connected thereto one end of a chain, or
similar flexible element 26,' the other end eo
of the said chain or element being con-
nected to the drum 16.. Suitable pulleys 27
and 28 are located at' the top of the cab 'and
are adapted to guide the chain or element,
in its movement as 'will be readily under- 95
stood. 'It will,' of course, appear obvious
that the triple. valve is connected as usual
to the air brake train pipes, and a detail
description of such pipes is thought to. be
unnecessary. The drum 17 receives one end 1.00
of a chain or flexible 'element 29, the other
end of the'sid chain or element being con-
nected with a. lever 30 of a valve 31 which
valve may receive air in the customary man-
nei from the air' brake reservoirs and con.
veys the same into the' sand dome 3 by
means of a pipe 32 in order that sand may
be forced by air pressure through a pipe 33.
to be discharged from pipes -34 beneath th.
drive wheels of the locomotive, as clearly.110
shown in Fig. 1 of the drawings. A chain
or similar element 35 is connected at. one end
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Mingo, William, Jr. Automatic Stopping Mechanism for Trains, patent, October 25, 1910; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth511626/m1/3/?q=%22%22~1: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.