Railway-Brake. Page: 3 of 5
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UNITED STATESPATENT OFFICE.
CHALK LES W. DRAKE, OF WELINGTON, TEXAS.
RAILWAY-BRAK1.Specification of Letters Patent. Patented Oct.'7,1913.
Application iled Jtune 26, 1913. Serial No. 775,928.To all whom it may concern:
Be it known that I, CHAtus W. DnE,.
a citizen of the United States, residing at
Wellington, in the county of Collingsworth.
5 and State of Texas, haves invented certain
new and useful Improvements in Railway-
Brakes, of which the following, is a specifi-
cation.
This invention relates to railway brakes,
10 which; are constructed to, grip the wheels,
and which, in the event of an emergency,
may be set to lift the wheels off the track in
order to obtain a quick stoppage of the
. train.
15 It is the object of the invention to pro-
vide a brake of the kind stated which is
simple in construction and reliable in op-
eration, and to this end it consists in a novel
combination and arrangement of parts to be
20 hereinafter described and claimed.
In order that the invention may be better'
understood,. reference is had to the accom-
panying drawings, in which-
Figure 1 is a side elevation of the brake
25 mechanism. -Fig.-2 is a similar view show-
ing the opposite side of the mechanism.
Fig. 3 is a vertical -section, on the line 3-3
of Fig. 1. Fig. 4 is an elevation showing
the emergency application of the brake.
30 Fig. 5 is an elevation, partly broken away,
of a part of the mechanism. Fig. 6 is a
cross section on the line 6-6 of Fig. 4..
In the drawings 10 denotes one of the
wheels of a railway car, and 11 is the axle
35 thereof. Opposite the inner face of the
wheel, above the axle, is located a plate 12
having reduced ends 13 located on opposite
sides of the axle. To each of these ends of
the plate is pivoted, by any suitable means
40 14, a brake shoe. 15 having a curved face to
conform to the tread of the wheel. The
shoe is faced with a removable strip 16 of
steel, and has a groove 17 to accommodate
the tread flange of the wheel, as clearly
45 shown in Fig. 6.
Two brake shoes are provided, the same
being located respectively on opposite sides
of the wheel. The upper ends of the brake
shoes have extensions 18 between which is
50 located a curved bar 19 connected at its ends
by links 20 to. the extensions of the respec-
tive brake shoes. Above the axle, parallel
thereto, is located a rock shaft 21 having at
its end a crank bend 22 which caries a
55 grooved roller 23, engaging the bottom edge
of the bar 19. When the shaft is rocked ina direction to swing the roller upward, the
bar 19 is'carried in the same direction, and
by reason of its .connection with the brake
shoes, the latter are swung on their pivots to 60
grip the wheel. This is for a service appli-
cation .of the brakes. The emergency appli-
cation will be presently described.
The bar 19 is located between the wheel
10 and the plate 12, and on the latter are 65
guides 24 under which the bar works. The
shaft 21 is provided with a rocker arm 25,
which is connected to a brake cylinder. The
truck frame 26 carries hangers 27 which sup-
port bearings 28 in which the shaft is 70
journaled.
Midway between the ends of the plate 12,
the latter has at the top an upward project-
ing lug 29 on the face of which is an, out-
standing longitudinal rib 30, and below the 75
rib, the plate has an outstanding flange or
shelf 31. To the truck frame 26 is pivoted
at one end, as indicated- at 32, an arm 33
having at its free end an enlargement 34
provided with a bottom groove 35 to receive 80
the lug 29. 'The part 34 has a top recess 36
opening into.the groove, into which recess
the upper extremity of the lug extends.
The face of the part 34 has a recess 37 to
receive the rib 30.. 85
The plate .12 is normally positioned so
that the lug 29 seats in the groove 35 as de-
scribed. With the parts in this position, the
plate is locked and prevented from tilting.
This is the position of the plate when the 90
brakes are off, and when a service applica-
tion is made. For an emergency applica-
tion, the plate will be released so that it may
tilt. as shown in Fig. 4, and allow one of the
brake shoes to come between the rail and the 95
wheel as will be more fully described here-
inafter. The plate 12 has an arcuate slot 38
in which is loosely 'mounted a boxing 39
through which the shaft 21 passes. Thus,
the shaft does not interfere with the tilting 100
movement of the plate.
The following means are provided for
swinging the arm 33 to release the plate 12:
On the part 34, on opposite sides of the re-
cess 37, are outstanding ears -40, between 105
which latter is pivoted, at its angle, as indi-
cated at 41, a bell-crank lever having one of
its branches 42 horizontal and its other
branch 43 vertical. The branch 42 is located
above the shelf 31 and carries a roller 44 '110
which normally occupies a position a short
distance 'above the shelf. To the branch 431,074,700.
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Reference the current page of this Patent.
Drake, Charles W. Railway-Brake., patent, June 26, 1913; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth853758/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.