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Патент USA US2406067

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C. C. EURIT
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AIR-COOLED BRAKE SHOE'y
Filed Jan. 25, 1945
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Patented Aug. 20, 1946 Y
2,406,007
UNITED sTATEs PATENT OFFICE
2,406,067
AIR-COOLED BRAKE SHOE
Carl C. Eurit, Tulsa, Okla.
Application January 23, 1945, Serial No. 574,117
4 Claims. (Cl. 18S-264)
l
2
This invention relates to brake shoes and has
special reference to a brake shoe adapted for use
>ends of the respective sides. This arrangement
is such that the baffles I5 extend substantially
on railroad cars and the like.
half way down the thickness of the brake shoe
One important object of the invention is to
provide an improved form of brake shoe having
from the convex toward the concave side and
extend backward to the concave side to embrace
Ventilating means whereby, during application of
the sides of the brake head H when applied
thereto. These bailles incline from their for
ward edges inwardly to a point opposite the con
vex face of the shoe and then continue to extend
the brake, the shoe will be prevented from be
coming excessively hot.
In the type of brake shoes forming the subject
matter of this application it is quite common to 10 inwardly through curved portions as clearly
use cast iron in their manufacture. When these
shown in Figure 4. This makes an air duct be
shoes are applied and become over-heated the
tween each baifle and the respective side of the
braking surface of the shoe frequently glazes
shoe, the said air duct being wider at its mouth
with the consequence that the braking effect is
or receiving end and narrower at its rear end.
greatly diminished.
15 Also the convex face of the brake shoe is pro
A second important object of the invention is
vided along the central line at each side of the
to provide a novel form of brake shoe wherein
rib I3 with a plurality of concave grooves Il ar
over-heating and consequent glazing will be pre
vented.
A third important object of the invention is to
provide a self-cooling brake shoe having means
for gathering a current of air and directing it
inwardly across the shoe.
With the above and other objects in View the
ranged in plan to form X-shaped ñgures with
drawing, and particularly claimed.
In the accompanying drawing, like characters
concave side than at the convex side.
By means of this arrangement air can flow
adjacent arms of the figures connected. Fur
thermore, grooves I8 extend from the arms of the
X-shaped figures outwardly to open into the
channels formed by the bai'lies. At the end of
each arm of these figures and also at the center
of each X-shaped figure there is provided a vent
invention consists in certain novel details of con 25 opening I9 which extends from the convex to the
concave face of the shoe and which tapers
struction and combinations of parts hereinafter
throughout its length so that it is smaller at the
fully described, illustrated in the accompanying»
of reference indicate like parts in the several 30 through the channel formed by the baffles and
views and:
since brake shoes never fit closely on brake
Figure 1 is a side elevation of a brake shoe
heads, can work its way between the heads and
shoe into the openings I9 thus cooling the shoe.
constructed in accordance with this invention.
Furthermore by means of the bail‘les I5 heat radi
Figure 2 is an elevation from the convex side
of such a shoe.
ating ñns are provided and likewise all the open
Figure 3 is a fragmentary section on the line
ings I9 add to the heat radiating surface. It
3_3 of Figure 2.
will now be plain from this construction that the
brake shoe will be e?fectively cooled and, since
Figure 4 is a section on the line 4-`4 of Fig
ure 2.
the shoe is kept cooled, no glazing of the braking
The brake shoe as here shown is intended for 40 face of the shoe wil occur.
What is claimed is:
use with a brake head I-I, indicated in broken
1. A brake shoe having a body provided with
lines, of the type adopted by the Master Car
a series of Ventilating perforations, and air gath
Builders Association and known as an M. B. C.
ering baflles extending along and spaced from
brake head. The shoe therefore has an arcuate
body I0 having a concave face II for engaging 45 the sides of said body.
the rim of a wheel W shown by broken lines in
2. A brake shoe having a body curved to pro
Figure 4, and a convex face I2 engaging the
vide opposite convex and concave faces, said
brake head. The convex side of the shoe is pro
body having Ventilating perforations extending `
vided with the usual transverse rib or boss I3
therethrough between said faces, and air gath
centrally of its height for engagement with the 50 ering bañles extending along and spaced from
appropriate portion of the brake head and also
the sides of said body.
with terminal ribs I4 for like purposes. At each
3. A brake shoe having a body curved to pro
side of the body Iû there is provided an air
vide opposite convex and concave faces, said body
gathering baille I5 which is carried to the body
having Ventilating perforations extending there
side by a plurality of ribs I6 at the center and 55 through between said faces, said body having
2,406,067
3
channels connecting adjacent perforations, and
channels connecting adjacent perforations, said
air gathering baffles extending along and spaced
from the sides of said body.
body having the convex face provided With
grooves connecting adjacent perforatîons, and
air gathering bañles extending along and spaced
4. A brake shoe having a body curved to pro
vide opposite convex and concave faces, said body 5 from the sides of said body.
having Ventilating perforations extending there
through between said faces, said body having
CARL C. EURIT.
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