Патент USA US2605721

Aug‘. 5,_ 1952
I
A. G. OMAR ET AL
2,605,718
LIGHT RAILWAY VEHICLE WITH REVERSIBLE TRIANGULAR TRACTION
5 Sheets-Sheet 1
Filed May 51, 1945
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A. G. OMAR ET AL
2,605,718
LIGHT RAILWAY VEHICLE WITH REVERSIBLE TRIANGULAR TRACTION
Filed May 51, 1945
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Aug. 5, 1952
A. G. OMAR ET AL
2,605,718
LIGHT RAILWAY VEHICLE WITH REVERSIBLE TRIANGULAR TRACTION
Filed May 31, 1945
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Aug. 5, 1952
A. G. OMAR ET AL
2,605,718
LIGHT RAILWAY VEHICLE WITH REVERSIBLE TRIANGULAR TRACTION
Filed May 51, 1945
'5 Sheets-Sheet 4
BY
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Aug. 5, 1952
A. G. OMAR ET AL '
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2,605,718
LIGHT RAILWAY VEHICLE WITH REVERSIBLE TRIANGULAR TRACTION
5 Sheets-Sheet 5
Filed May 31, 1945
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2,605,718
Patented Aug.- 5, 1952
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> Y LIGHT RAILWAY VEHICLE wI'rH REVERSI- '
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_._BLE TRIANGULAR-TRACTIQN
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Alejandro Guicoechea OmarQZIi‘ucaVsIMQde 0'riol'jy' _ i‘ V
Urquuo. and'yJa'rmes J. P.-;Mac_Veigh, -Madrid,
Spain, assignors to Patentes 'T'algo, »S.“ A,‘
Madridgspaimf'a corporatiomof Spain
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Application May 31, 1945; SeriaINO. 596,886] ‘
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In SIiainJuly 8,1944
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-2 Claims.
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Fig39' is a perspective view of the two-wheel
‘The object of the present invention is to'pro
truck'shown in Figs. 3, 4 and 5.
' vide': a reversible railway train in which the wheels
are’guided so as to attack the tracks at a negative
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v
i" portant: improvement is shown in Fig
ures l1and'2 of the enclosed drawing.
In Figure 1 we have‘ the articulated trainwhich
angle on the curves regardless of the direction
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(c1.~10_5=-4)q
1
in which the train is running.
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this patent claims running toward the left:
“With the advantage obtained by the construc-'
tion shown in the copending application Serial _
1'. The wheels r--r are rigidly connected with the
No; v661,699 ?led 'April 12, 1946, by one of us on
element _D. The point of traction L forms
which U. S. Patent 2462566 was issued on Feb- with
the wheels r--_r the triangle Lrr. ~
ruar'y .22, 1949, the rolling guidedby ‘triangular 10
traction doesv’not enable the circulation] of'the
trains‘ formediby'thee'lements of the character;
I 2. The; element E rotates inza horizontal plane
:about ,the point M.
direction in‘ the trains "mentioned.
the triangle Mrr.
sary speed and’safety there is'used the wheel
truck'between each pair of elements which will
25 be described in the following.
‘
In Figures3 and 4 we represent, in plan and
elevation, respectively, a diagram of the truck
in‘the form preferred in this invention, the varia
way in which the wheels are connected to the
site directions;
I
“Fig. 3' is a diagrammatic planview of a two
wheel truck of the train including aphantom
tions of its form not to be considered as a novelty
30 over, what has’ been claimed. This preferred
solution incorporates at the same time a “double
action” of‘ suspension which notably improves the
running of the train.
view of the endsof the two body elements which
are supported on this truck;_
'
In order to effect this operation with the neces
wheels, not directly in the elements, but in a'
body elements when the train is running in oppo
_
plane about the point M,'from where the vforces
frame which can be incorporated rigidly in one
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of traction are transmitted.
This’ difficulty is eliminated if we mount the
Figs. 1 and :2 are ‘diagrammatic plan views of
a train embodying the invention‘indicating the
.
2."I'he element .D rotates now‘ in a horizontal
di?-lcul't for'them to be put into service by the
companies working the 'railrdad'lines.
direction.
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15 1.‘ ‘The; wheels r-r are rigidly connected with‘
' the element E. The point‘ of traction M of
- this element forms with'the'. same wheels r--r.
'The irreversibility of'these trains'mak'es it
element or the other, according to therunning
‘
Running to the right (Figure 2), we have:
istics described in the patents mentioned, in both
running directions. The angle of attack of the
wh'eelsvw‘h'ich is negative, that is, safe 'in the one"
running ‘direction, is "positive in the opposite
I
1 v v
'y The truck is constituted by a frame 0 which
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Fig. ,_4_ is a diagrammatic end elevation of the 35. carries‘the point “M” “M'” for the attachment
of the couplings or points of traction, and the
verticalrods‘ ‘fuvu” over which the suspended
Fig; Sis a diagrammatic "sideelevation of the
‘cruci?x
_
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r
r
t‘ru'ckindicating in vertical section portions of
pieces are ‘slid. ‘ The wheels are mounted in an
the body elements supported by the truck;
elastic supportvwhich in relation to the truck
can be vertically displaced, with guided displace
ment by the inside rods “to.” This constitutes
the ?rst step of suspension.
The second step of suspension is that of the
elements in relation to the truck, through the ar
‘_
Fig. 6 is an enlarged‘ detail view of the trac—
tion connection between the truck and one of
the body elements;
Fig. '7 is a diagrammatic plan view showing the
train embodying the invention arranged for run
ning in opposite directions;
Fig. 7a is a diagrammatic plan view of the two
wheel truck between two of the body elements
showing parts of the body elements in phantom
45
zangement shown in Figure 5, in detailed eleva
Ion.
Into the bearings “PP,” mounted in the ele
ment “D,” there enter the cylindrical girders
“aa.” which form the tubular frames “a--c-—a.”
truck and the body elements when the train is 50 Into the bearings “QQ,” mounted in the element
E, there enter the cylindrical girders bb, which
running to the left and rounding a curve; i
form the tubular frame “bdb.” The frames
Fig. 7b is a similar view indicating the con
“a—c—-a” and “b-—d—b” transmit the weights
nections when the train is running to the right
of the elements D and E, respectively, to the
and rounding a curve; and
truck, through the vertical rods “u,” axis of ro
Fig. 8 is a side View of the train shown in
3 view and indicating the connections between the
Fig. 7.
tation of the frames mentioned.
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2,605,718
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The points of traction M and M’ are calcu
lars IT, IS which are slidable on'the rod u.
lated for being able to support all lateral thrusts,
enabling the rotation of the chassis about the
elements; ,but notthe displacement of the truck
The
in relation to theijelements in perpendicular‘di
tubular-frame bdb is mounted on similar collars
l9,‘20. The collar 20 rests on a sliding collar 2|
which .iscarried by a compression spring 22 whose
lower end .is held by a stop 23 ?xed on the rod u.
rection to the road, and‘ in longitudinal direction
(see Figure 6).
.Dand E is resiliently supported by the truck
In this 'wa'y,3"the weight of the car body elements
If by means of two bolts SS We arrest the"
bars‘ ea in the bearings PP ofitherelements'lDT I
frame C.
.
1Sma11i'angulari movements of the cylindrical
(Figure 7a) due to the fact that thewcoupling 101 girders "aai'and 222) in the bearingsPP, QQ is per
M does not permit lateral or longitudinal dis
mitted eitherby the provision of a slight play
placement, as we have already‘7 indicated’; the: _ indicatedlin Eig.i.5' or by the use of silent block
truck C will remain rigidly incorporated-.with~
bearing-s slightly‘; resilient material.
the element D.
The element E‘ will "rotate-about
We
the point M’ moving the bars bb in and out tofu,
the bearings QQ of this element.
If, on the other hand (Figure 7b), we remove L‘
claim:
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1. An articulated railway vehicle comprising a
plurality of pairs of wheels, a plurality of rigid
the bolts from the bearings PP of the elements ii ‘
sections'each having its rear end mounted on one
pair'rofwheels, connecting means for the adja- '
D and bring them to the bearings QQ of the
cent ends of adjacent sections consisting of a
element E- (operationwhich evidently willhave
20 central traction ‘connection; including. a. vertical
to be made in a straight ~line)r,}the triangles will
be inverted and theirunningr direction is to the
pivot connected to one section end and a close-.
?ttingbearing connected tothe other section
end-and lateral connections each consistingof.
right. Now the element-D revolves~ about vthe
point M; while the rotation. of ,M’ is eliminated
a horizontal slide pivotallymounted on one sec
for the reason that the. playrof the bars bb inside
the bearings QQ is impeded.
tion end toturn about a vertical axis, and a guide
for said slide fixed on the other section end op
'
It :i'sito be noted that the 'fact that the frame
a-—c"‘—ar andlF-d-b' can revolve about the rod
11, does not‘ makeithe coupling of the truckless
erable to permit‘ angular and longitudinal movef?
, ment ofsaid slide in saidguide.
. . 7 1 ,
' I 22. Inna-reversible articulated‘ railway'vehicle
rigid‘ in relation to the elements; in 'fact; the 30 consisting.ofl'afplurality ,of'two-wheel trucks ‘and;
pivots M M’ alone enable the rotation of the
rigid-body elements extendingbetweenthe‘trucks,
elements about these points, with whose rotation
a; connection ,betweeneach truck and the endof~
the frame a—c--a tend to place themselves in
. eachbody element adjacent to it~comprising a.
the bearings P, and to leave the bearings P".
’ centralgpivotal traction connection which takes’
Since" thisi.is'ipreventedv by‘ thev bolts S‘,- in' one 35 all rlong-itudinali forces,‘v longitudinal telescopic
runningfdirection,.there can‘ be. no‘irsuch revo
lution.
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connections at the sides of the vehicle pivotallyf
connecting each truck and the endof each .body
element adjacentto it, and removable means for
locking said telescopic-connections against'tele
.
' The, Figures "7 show these‘ framesifaccording to
the invention,‘ appliedto‘ a‘ unit of‘articulated
train.
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Finally, to facilitate connecting and discon
necting, of the tractor .in relation to the train,
40 scopic movement so that each truck may be
the‘ front cars carry replaceable Wheels. iii-the.
form which Figure 8 illustrates.
Fig. 9. shows the truck and a' part of one of 45
the sidewalls of the car body element D. The
locked against said telescopic movement to one
of the body elements vadjacent to it While re
maining‘ pivotally connected to the other'adjacent
body element.
‘
. I LUCAS M. 1m ORIOL Y URQUIJQ
car body element E‘ at the other side of the truck‘
is omitted for the sake offclearness.
7
ALEJANDRO GUICOECHE‘A OMAR.
JAMES J. P. MAcVEIGH.
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The frame
C of the. truck consists of a lower structural
member 19 which extends between and around 50
‘ REFERENCES ‘CITED.
The following references are of record in‘- the
the: wheelsv r—r and upper structural members.
H which are connected to the lower structural
?le of this: patent: - ‘
member. It! by the vertical rods uvv andl'by in
clined braces 12''. The wheels r—1' rotate on short
axles'13j whose ends are held'in slides. l4 onthe
Number.
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UNITED STATES PATENTS
Name. .
Date
rods o'v. Compression springs I5 react between,
267,335
1,480,634
Driggs __________ __ Nov. 14, 1882
Putnam _________ __ Jan..15, 1924
the'slides l4 and stops I6 so that the truck frame
is resiliently mounted on the wheels.
The tubular frame a.—-c-—-a is mounted oncol
2,098,949. . .C-eissen __'________ __'Nov. 16, 1937‘
2,373,348. . . Schroeder et. al. ____ Apr. 10, 1945'
2,462,666‘
Omar ___________ __ Feb. 22, 1949