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Патент USA US2510443

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June 6, 1950
Filed July 29, 1947
Patented June 6, 1950
Jakob Waldvogel and Gaston Borgeaud, Winter
thur, Switzerland, assignors to Schweizerische
Lokomotiv- und Maschinenfabrik, Winterthur,
Application lluly 29, 1947, Serial No. 764,328
In Switzerland April 29, 1946
Section 1, Public Law 690, August 8, 1946
Patent expires April 29, 1966
4 Claims. (Cl. HD5-490)
Our present invention relates to a railway
vehicle bogie, on which the car body is supported
by means of laterally disposed longitudinal and
oscillatably suspended plate springs, and in which
the space inside the frame and in the bogie centre
portion may be kept free from bogie props, struts
and guide parts.
bearings. Bogie and spring ‘bands are permitte
of swinging together about the king pin 23, rela
tive to car body i3. To such end, the recessed
bearing plate I8, mounted on the convex head of
cradle I5, is provided with shouldered or stepped
guide faces it of cylindrical form. The cylinder
axis of the said faces I9 is vertical and passes,
in the neutral or balanced position of bolsters B,
through king pin 23. The said guide faces I9 are
Our invention consists in securing two ñoating
beams or bolsters which are oscillatably suspend
engaged or guided by correspondingly adapted
ed laterally on the bogie frame, to the ends of 10
cylindrical guide faces of the shoe or slide plate
the longitudinally disposed plate springs, and in
2u which is ñxed to the car-body I3.
arranging the spring bands or buckles to permit
The bogie king-pin 23 is mounted in a U
same of swinging, relative to the car body, as a
underslung longitudinal beam 2d which
unit about a vertical axis disposed in the longi
tudinal median plane of the car body, and of 15 is depressed -below the intermediate axle 3, and
the ends of beam 2è are fastly secured to the
guiding the said spring bands in a plane trans
two transoms 5 of bogie-frame I. A transversely
versal to the said median plane.
two-armed balancing lever 25 is, pivoted on king
An embodiment of the invention, in form of
pin 23, and is engaged at its ends by the links
a triple-axle bogie, is shown in the drawing, in
20 2l and 28, which act in opposite directions. The
free ends of links 2l, 28 are pivoted to the studs
Fig. 1 shows a longitudinal section on line I-I
29 of the two transorns 30 which are disposed
of Fig. 2,
fore and aft of the king pin 23, and ñxed to the
Fig. 2 a plan View,
vehicle body. The ends 33 of transoms 3D are
Fig. 3 is a cross-section on line III-III of Fig.
25 fastly secured to the posts 32 of car-body I3.
2, and
The curled-over ends or eyes of plate springs
Fig. 4 a cross-section on line 'iV-IV of Fig. 2.
l 9 shall bear in the forks ß of the bolsters .6 on
Fig. 5 is a view similar to Fig. l with parts
as wide a base as possible. To such end, two
omitted to show other parts.
juxtaposed plate-spring packets advantageously
The bogie frame I is resiliently supported on
the boxes 2 of axles 3 through springs 34 guided 30 are used (Figs. 2--4), which are fastly secured
to spring band I2. The bearing members pro
on vertical pins 35i, the said boxes for such ‘pur
vided on the top face of spring band l2, there
pose being provided with lateral arms 2a. The
fore, also should have a correspondingly wide
sills 4 of bogie frame I are interconnected by
base, and the difference in elevation between the
transoms 5 on either side of the intermediate axle
3. Sills 4 and transoms 5 are formed as box 35 said members and the pins Il! of the plate-spring
eyes shall be as small as possible. Springs 9 of
maximum width also are desirable, since in such
A bolster or floating beam 6 each is suspended,
case the holsters 6, which form an articulated
fore and aft of the bogie-frame center, from the
quadrangle (appearing as rectangle in plan View) ,
bogie frame by means of swing links l, i. e. lat
erally oscillatable. The bolsters B are provided 40 may be ñxedly secured to the springs in the cor
ners of such quadrangle, thus preventing a varia
with forked ends, and connected to the laterally
tion o-f the angular position of the springs rela
disposed bearing springs by means of pins Il)
tive to bolsters 5.
threadedY through the forks 8 and the curled-over
As may be seen from the drawing, such oscil
spring eyes of the plate springs 3.
45 latable spring support of the car-body on the
The car-body
on the I3,
bands oron'buckles
both sides,
S2. To
bogie-frame permits of providing an intermediate
or third axle-and-wheel set and, if necessary, of
permit frame i ci oscillating, relative to body i3,
also mounting an electric motor above the said
on a horizontal cross-axis, a cradle i5 having a
set, in that sufficient room in the bogie centre is
cylindrical convex head and fastly secured to the
spring band I2, is interposed into the said sup 50 held unobstructed for such purpose. The ar
rangement described also affords the possibility
porting arrangement. Spring band i2 is held
longitudinally immovable, relative to the bogie
of providing a depressed king pin.
What we claim and desire to secure by Letters
Patent is:
latter, and by a longitudinal guide link I6 the
1. In a railway vehicle having a car body, a
ends of which are mounted in spherically shaped 55
frame I, by means of a tie Il «fastly secured to the
triple-axle bogie the Wheel sets of which have
axle boxes, said bogie having a frame resiliently
supported on the axle boxes, and the car body be
ing resiliently supported on the bogie frame, a
plurality of inverted plate springs disposed longi
tudinally on either side and outside of the central
portion of each said bogie and symmetrical to
the central axle thereof, means ‘for supporting the
car body transversely movably .on .the midpoint
bands of said springs, a pairpf »transverse bol
sters for each bogie pivotedlongitudinally rock
ably to the end of said springs, king pin-fand-link
guideways coinciding with the center of rotation
of the respective bogie.
3. In a railway vehicle set out in claim l, lon
-‘gitudinally disposed guide links to rockably guide
the said pendulum-cradle transversely of the
bogie, said links connecting the spring bands of
the longitudinally disposed car-body supporting
sp'rings to the respective bogie frame.
means for connecting each bogie to the car body,
and means for suspending both‘ends of each said
bolster in a transversely swingable sense from
each said bogie, the said bolstersfbeing- disposed
on either side of said central Wheel set so as to
form together with the said springs a closed
pendulum-cradle in each bogie, which cradle en
4. 1n a railway vehicle set out in claim l, the
said >holsters being depressed below the bogie sills
for the purpose olf-lowering the car-body support',1
ing-springs to permit the use of longitudinal cai'
body girders of high section modulus and to at"
>tain a smooth running of the vehicle.
The .following references are of record in the
closes a free space on veither side of said central 20 file of this patent:
Wheel set «and below each bog'ie.
2. In a railway vehicle set out in claim 1, spring
>bands of a width to accommodate at least two
`juxtaposed car-body supporting-springs, and cir
cular-arc guideways in said spring bands for "25
Ylaterally guiding the car body, the center of said
Brill ____________ __ May 13,
Adams ___________ __ May 7,
Sheiñeld et al ..... __ June 23,
Kadel ____________ __ June 4,
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