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Патент USA US2127935

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Aug. 23, 1938.
H, M. PFLAGER ET AL
2,127,935
RAILWAY TRUCK
Filed Aug. l2, 1955
_
3 Sheets-Sheet l
Aug. 23, 1938.
H. M. PFLAGER ET An.
RAILWAY
TRUCK
Filed Aug. 12,'1935
2,127,935
‘
'
3 Sheets-Sheet 2
Aug. 23, 1938.
-
H, M. PFLAGER ET Al.
2,127,935
RAILWAY TRUCK
Filed Aug. 12, 1935
3 SheetS-Sheeì 5
1
'10
_Z'm/en for
2,127,935
Patented Aug. 23, 1938
'UNITED STATES
„PATENT IGFFICE
2,127,935
RAILWAY TRUCK
Harry M. Pñager, St. Louis, Mo., 'and Edmund
S. Beckette, East St. Louis, Ill., assignors to
General Steel- Castings Corporation, Granite
City, Ill., a corporation of Delaware
Application August 12, 1935, serial No. 35,710
14 Claims. (c1. 10s-19o)
» This invention relates to railway rolling stock
Figure 10 is a vertical transverse section taken
on line Ill-I0 of Figure 9.
.
_
'
and consists in novel truck structure.
Figures 1 to 6 show a. truck including aA pair
The main object of the invention is to provide
a light weight truck particularly adapted for « of wheeled axles I, journal boxes 2 and equalizers
3 mounted on the boxes and supporting the
6 high speed service.
Another object is to dissipate minor _lateral truck framing by means of coiled springs 4.
shocks applied to the truck frame when the The truck frame comprises side members or
whieel pieces 5 and box section transoms 6.
wheels strike rail joints, switches, and other ir
regularities in the track producing jiggling of the Brake hanger brackets 1 and 8 are provided at
10 frame.
the ends of the side members and at the inter 10
vAnother object is to support the bolster hang
ers from the truck frame by rubber members
and, preferably, to arrange the members so that
their resiliency is not limited' to merely resisting
l5 compression forces.
.
A copending application, Serial _No. 17,415,
filed April 20, 1935, by one of the present in
ventors illustrates a light weight truckfor high
speed service in which three sets of springs are
20 provided to produce easy riding qualities, namely,
those carried from the journal boxes and direct
ly supporting the truck frame, those seated on
the frame transoms and pivotally supporting the
bolsters, and those between the hangers and the
25 bolster. The sets of springs have different char-`
sections of these members with the transoms.
Each end of each transom is recessed to form
an enclosure which houses two pairs of rubber
members I5. Each member I5 is vulcanized to
plates I6 on the opposite sides thereof. Shoul
lders 24 on the transom Iside walls I4 seat the
rubber members. A yoke or hanger support in
cludes elongated vertical ribs I8 extending over.
the two pairs of rubber members I5, horizontal
Webs 35 between the corresponding ends of ribs
I8 and overlying the rubber members, and de
pending vertical Webs I'I each inserted between a
corresponding pair of rubber members I5.
A pin I9 seated in ribs I8 pivotally mounts a
swing hanger I0 depending between members I5 25
and through an opening 20 in the bottom of
the transom. Lu‘gs 2| projecting from one oi'
In the present invention, the springs directly Yribs I8 mount a bolt 22 securing pinJ I9 in posi
supporting the bolster hangers are replaced by tion. Hanger I0 at its lower extremity has a
30 rubber resilient members which provide new and slot 23 receiving the end of a bar II supporting
useful means for resiliently supporting the swing ' the elliptic springs I2 von which the bolster 9 is
acteristics so as to have a mutually dampening
eiïect.
hangers.
_
'
carried.
_In the accompanying ldrawings illustrating the
35
invention
Figure 1 is a partial top view of a truck em
bodying the invention.
Figure 2 is a partial side view of the structure
in Figure l.
_ Figure 3 is a vertical transverse section on the
40 une a-s or Figure 1.
_
Figures is a half vertical longitudinal section
and side view taken _substantially on the line
4-4 of Figure 1 but showing an end portion of
_
‘
.
The sides of webs I1 converge downwardly as
do the abutting inner plates I6 on the rubber
members. The lower faces of these members are
inclined upwardly and toward each other to
provide for downward deñection of the rubber,
when the load is applied, without excessive
amounts of rubber projecting below the level
of the lower edge of the outer plates I6. Shi'ms
36 _are provided between the horizontal Webs 35
and the upper, inner edges ofthe rubber mem
bers or the upper edges of the inner plates I6. ' '
In assembling these parts, downward pressure
on the hanger produces a wedging action be
tween webs I1 of the hanger yoke and the abut
the line 5--5 oi Figure 3.
‘
ting inner plates I6 on the rubber members, and '
Figure 6 is a detail vertical longitudinal se’c
the webs slide downwardly relative to the inner
tion taken on the line 6--6 of Figure 1.
plates of the rubber and apply horizontal com
Figure 7. is a view similar to Figure 6 but show- _ pressive force on the rubber until the shim en 50
50
ing a modiñcation.
gages the upper inner edges of the inner plates I6.
Figure 8 is a partial top view of a truck em
It is a _characteristic of rubber that if it is put
under compression it will have less deflection
bodying a modification.
_
under a given load and thereby oil’er greater re
Figure 9 is a detail vertical longitudinal sec
55 tion taken on line 9_9 of Figure 8.
sistance to other forces applied thereto. The 55
5 the truck.
'
'
Figure 5 is a detail horizontal section taken on
2
2,127,935
fications coming within the scope of the claims is
shims are used to adjust the component of com
pression so as to provide proper deflection.
contemplated.
What is claimed is:
1. In'a railway truck, framing, rubber mem
'If the resiliency and other qualities of the
rubber is lessened, due to constant use or other
bers thereon, elements between said members,
reasons, the proper resistance to the vertical and
' transverse displacement of the hanger may be
said members being compressed horizontally be
tween said framing and said elements to support
the latter, hangers carried by said elements, and
a bolster carried by said hangers.
obtained by removing one or more shims so as
to permit the wedge webs l1 to slide downwardly
further relative to the inner plates I6 of the
2. Structure as speciñed in claim 1 in which
said hangers are pivoted on said elements.
10 rubber member to increase the horizontal com
pressive force on the rubber.
As this force is
3. In a railway truck, framing having upright
opposing elements, individual rubber members in
dependently mounted on said elements and hav
ing substantially parallel opposing faces, and a 15
bolster support device between and compressing
the transverse forces which are applied to the said rubber members and yieldingly carried
truck. rI'hese forces subject the-rubber members thereby, said support device having downwardly
converging parts engaging opposing faces of said
-to shearing,- bending, and twisting forces, result
rubber members for adjusting the compression of 20
20 ing in freer action of the rubber than would be
the case if the members were mounted on a hori-~ said rubber members.
4. In a railway truck, framing with opposed
zontal member of the transom4 with the hanger
substantially parallel walls, rubber members
top bearing member or the hanger itself sup
increased, less deflection results, but the rubber
offers greater, resistance to other forces than
beforeÍ removalI of the shim or shims.
The rubber hanger mountings carry the vertical
15
forces, due to the loads on the truck, and resist
mounted on said walls, and a bolster supporting
` ported on top of the members, thus subjecting
25 the members principally to compression forces
only.
device carried by said members and including 25
_ a portion between parts of said members spaced
-
from said walls and compressing them laterally
against said walls, such compression increasing
with the load on said device, said device being
Figure 7 shows a web 26 of a hanger yoke similar
to thatin the previous form but the sides of web
26 and the abutting inner plates 21 on the rubber
30 members 28 are disposed vertically. Shims 39
Lnovable horizontally by distortion of said mem
are provided between the portions 26 of the yoke
and the inner plates of the rubbermembers 28 to
adjust the component of compression on the rub
ber members. To facilitate assembly of the yoke
35 between the rubber members, the lower portion
ers.
5. In 'a railway truck, spaced transverse frame
elements, rubber members at the opposite ends
of said elements, said members being arranged
in pairs, support devices between and compress 35
ing the members of each pair horizontally, hang
of the yoke web is' beveled at 40. Shims 38 are
provided between the shoulder on the bearing
member and the upper edges of the inner plates
so asto adjust the height of the swing hanger in
40
the truck.
ers pivotally suspended on said devices, and a
bolster carried by said hangers.
l
In Figures 8 to 10, each bolster hanger- 29 is
supported directly by the rubber members 30
without the interposed bearing device of the
previous forms. Hanger 29 has a downwardly
45 tapered upper portion 3l against the sides of
which abut the similarly tapered inner plates 32
on members 30. The rubber members are posi
tioned between shoulders 33 on the transom side
walls, and shoulders 34 at the upper end of the
50 hanger overlap the upper edges of the rubber
members. vFillers or shims 35 provide for ad
`
6. In a railway truck, spaced pairs of rubber
members, a device having spaced elements gripped 40
between opposing faces of each pair of said mem
bers, and a bolster hanger pivotally carried by
said device and swinging between said elements
and between said pairs of members.
'7. In a railway truck, opposing parts with 45
shoulders spaced vertically and horizontally from
each other, rubber members mounted on said
parts with outer portionsrengaged by said shoul
ders, and bolster swing hanger structure carried
by the inner portions of said rubber members, 50
said shoulders functioning to hold said rubber
justing the component of compression on the
members against movement horizontally or ver
rubber members in the same manner as the
tically by said hanger.
shims in Figures 1 to 6. In this form the rubber
55 members are twisted by swinging of the bolster
hangers, the members yielding under the torsional
forces applied through the hangers. Y
f
'I‘he rubber members function to carry the
vertical load on the truck, to absorb the lateral
60 shocks due to the jiggling of the truck frame
when the wheels strike rail joints, switches, etc.,
- and to tend to dampen the effect of the bolster ‘
springs I2 and frame supporting springs 4 so
that the truck rides smoothly and evenly.
In
65 Figures 8 to 10, the rubber `members have ’athird
8. In a railway truck, a frame member'having a
recessed portion, separated rubber members housed
portion, and a bolster hanger between said mem
bers and depending through said frame member.
9. In a railway truck, horizontally opposing
60
parts, separated members mounted on said parts
and extending therefrom towards each other, a
device supported by said members, and a bolster
hanger element carried by said device between
the inner portions of said members, said members 65
being compressed between said parts and said
device and the compression on said members be
same lateral resistance as that obtained by the
`usual inclined swing hanger. In all forms, the
ing increased with the load on said element.
'10. In a railway truck, opposing parts, rubber
Imembers mounted on said parts, and a bolster
hanger secured between and suspended from said
70 bolster is effectively centered due to the resist
ance to swinging which gradually increases as
the bolster is displaced from _its center position.
The invention is not limited to the details shown
' ’ but may be modified as will occur to those skilled
55
therein and mounted on opposite walls of said
function, to twist and offer approximately the
'75 -in the art and the exclusive use of all those modi
30
«
members, said members beine. torsionally resilient
to accomodate swinging of saidhanger.
11. Structure as speciñed in claim 10 includ
ing filler means between said members and said
2,127,935
hanger element for adjusting the compression of
said rubber members.
12è Structure as specified in claim 10 includ
ing iiiier means between said rubber members and
said hanger for adjusting the component of com
pression on the rubber members to vary the re
,
,
3
on said device, said hanger being yieldingly supi
ported on said frame by the iiexing of said rubber
members.
'
14. In a railway truck, a frame, spaced rubber
members seated on said frame at each side of
the truck, devices at each side of the truck each
sistance of the rubber members to deflection,
shearing, bending,_or torsional forces.
ber members and movable transversely of the
13. In a railway truck, a frame having upright
walls spaced apart, rubber members independ
truck by the yielding of said members, swing
and abolster car- 10
extending between and carried by adjacent rub
10 ently mounted on said walls and extending to- ` hangers carried by said devices,
ried by said swing hangers.
-
wards each other, a device gripped between said
H. M. PFLAGER.
rubbermembers, a bolster swing hanger pivoted
EDMUND S. BECKETI'E.
Y
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