Motor Vehicle Break Page: 2 of 3
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UNITED STATES PATENT, OFFICE
JOHN E. STONE, OF SWEET WATER, TEXAS.
MOTOR-VEHICLE BRAKE.1,153,726.
Specification of Letters Patent. Patented Sept. 14, 1915.
Application filed November 25, 1914. Serial No. 873,935.To all whom it may concern:
' Be it known that I, JOHN E. STONE, a
citizen of the United States, residing at
Sweet Water, in the county of Nolan and
5 State of Texas, have invented certain new
and useful Improvements in Motor-Vehicle
Brakes, of which the following is a speci-
fication.
The invention seeks to give an improve-
10 ment in brakes especially suitable for motor
vehicles, by which the objectionable action
of the brakes now generally used, in locking
one wheel before proper braking action
occurs on the other, will be prevented by
15 the natural and automatic action of the
device. At present in order to prevent un
equal action in opposite band brakes, where
operated by direct. link connections from a
hand lever, it is necessary to make extremely
20 nice manual adjustments, and it is the pur-
pose of my invention to enable direct link
connections between the hand lever and two
brakes with elements so arranged that an
equalizing action will occur without the use
25 of intermediate levers, or cables and pulleys.
It is also a purpose to obviate the neces-
sity for large bearings for the brake con-
nection elements by so arranging the parts
that there will be a practical absence of force
so tending to throw the parts pivotally con-
nected off of their axes when the brakes are
applied. Consequently and further, the
necessity for machined fittings is greatly
reduced, and in the connections between the
35 ends of a brake band and a rocking lever
element I am enabled to use simple steel
wire links in hooked engagement with band
and lever, without liability of casual dis-
engagement or objectionable lost motion.
40 Additional objects, advantages, and fea-
tures of invention will appear 4n the con-
struction. arrangement and combination of
parts ot my invention, one of the possible
embodiments of which is herein described
45 and shown in the drawings, where-
-Figure 1 is a plan of the rear part of a
motor vehicle chassis equipped with my in-
vention, Fig. 2 is an elevation of a brake
drum and mounting for the brake. showing
50 the invention with the brake rods discon-
nected, Fig. 3 is a vertical cross section of
the brake. Fig. 4 is a top view thereof. Fig;
5 is a fragmentary plan of the chassis with
a preferred form of operative connections
55 between the opposite brakes. Fig. ( is a side
view of the mounting of the central lever.There is illustrated an engine ch assis 10
of any usual construction, including the rear
axle housing 11 and differential housing 12,
of familiar form and construction, the rear 60
axle housing having at the outer ends the
usual circular frame plate 13 concentric with
the housing and of a size corresponding to
that of the brake drum 14, which may be of
any usual form and attached to a wheel, not es
shown, in any customary manner. The
frame plate 13 is provided with an upward
extension 15, having a flange 16, extending
over and concentric with the drum 14, this
flange having longitudinal slots 17 in the 70
medial plane of the drum in which there are
slidably engaged rectangular lugs 18 formed
on blocks 19 secured upon the outer face of
the spring band 20 at its extremities. This
band with the usual lining 21 may be termed 75
the brake band. At its middle on the outer
side, an anchor block 22 is fixed, having a
pin 23 extended therefrom through a ver-
tical slot 24 in an anchor lug 25 formed on
the frame plate 13 at its lower part, pro- 80
jected outwardly a sufficient distance. The
extension 15 is formed with a horizontal
rectilinear slot 26 centrally over the axis of
- the drum through which there is slidably
engaged a lever 27 having an enlarged disk- 85
.like base portion 28, the disk and the body
of the lever being stamped integrally of one
piece of sheet metal. The disk is formed
with opposed openings 29 on opposite sides
of the axis of -.e lever close to the periphery 90
of the disk portion and preferably on a
radius of the disk at an angle of about
forty-five degrees to the axis of the lever.
Engaged in these openings there are links
30, having hook ends engaged through the 95
respective apertures, their outer ends being
similarly engaged through apertured ears
31 on the blocks 19. The outer end of the
lever is secured as at 32, whereby it extends
some distance laterally beyond the end of 100
the slot 20 when in initial position. The
levers at each side of the chassis are so
arranged as to extend rearwardly in initial
position, and when in this position, the
openings 29 of the disk are in a line with 105
the axis of the driun, substantially. In case
greater or less movement or leverage force
is desired to be exerted on the links. they
may be adjusted in additional openings 29'
,paced arounr the disk portion. of the lever. 110
The outer ends of the levers have pivotally
connected the .to lateral rods 33 inclined
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Reference the current page of this Patent.
Stone, John E. Motor Vehicle Break, patent, November 25, 1914; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth859969/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.