Improvements relating to Railway Vehicles.
Year: 1890

page_text: Date of Application, 25th Feb., 1890-Accepted, 29th Mar., 1890
COMPLETE SPECIFICATION.
[Communicated from abroad by WILLIAM HENRY HARRISON SISUM, of 72, Wil-
loughby Street, Brooklyn, City and State of New York, United States of
America, Machinist.]
Improvements relating to Railway Vehicles.
I, HENRY HARRIS LAKE, of the firmn of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The improvement consists in the combination with the side frames of a car truck
provided with bearings, of a bolster made in three parts, namely, an upper, middle
and lower part and springs arranged between the lower and middle parts and other
springs arranged in pairs between the middle and upper parts. The side frames of
the car truck may be provided with bearings for three pairs of wheels. The said
frames will preferably be constructed of two longitudinal bars arranged one above
the other and pedestal jaws consisting of pieces fitted and secured between said
longitudinal bars by means of bolts extending transversely through the latter and
lengthwise through the pieces forming the pedestal jaws.
The improvement also consists in the combination with the side frame of a car
truck and an oil box working within pedestal jaws comprised in said frame, of a
rocker supported upon the oil box and a stirrup supported upon the rocker and
engaging with said pedestal jaws. The stirrup may consist of two upright bars and
a cross bar, and the cross bar will then be made to rest upon the rocker and the
upright bars constructed to engage with the pedestal jaws of the side frame.
In the accompanying drawings, Figure 1 is a plan or top view of a car-truck
embodying my improvement. Figure 2 is a side elevation of the same. Figure 3 is a
transverse vertical section taken as indicated by the dotted line xx Figure 1. Figure 4
is a vertical section taken as indicated by the dotted line y y Figure 3. Figure 5 is
a vertical section taken upon the line z z Figure 2. Figure 6 is a horizontal section
taken on the line v v Figure 4. Figure 7 is a perspective view of a stirrup com-
prised in my improvements. Figures 4, 5, 6 and 7 are made to a larger scale than
Figures 1, 2 and 3. Similar letters of reference designate corresponding parts in
all the figures.
A¹ A' A' designate three pairs of wheels, which may be of any suitable construc-
tion, affixed to their axles in the usual manner. The journals of the axles fit in
bearings B, arranged in oil-boxes C. The oil-boxes C extend into pedestal
jaws D' D' D'. The pedestal jaws D¹ D' D³ on one side of the car truck are com-
prised in a frame E, and those on the other side are comprised in another and similar
frame E. Each frame E has a bar e extending lengthwise of it above the pedestal
jaws, and a bar e extending lengthwise of it below the pedestal jaws. Between the
bars e¹columns eet are arranged. It will be seen that the columns are located
about midway between the pedestal jaws D¹ and the pedestal jaws D³, and that the
columns e occupy. a corresponding position between the pedestal jaws D³ and
the pedestal jaws D. A brace-bar e extends from one end of the longitudinal bar e¹,
thence along the under side of this har past the pedestal jaws D', thence obliquely
downward to the longitudinal bar near the columns e, thence along the upper side
of the bar beneath the columns e, thence upwardly in an oblique direction to the
longitudinal bar e¹, thence along the under side of this longitudinal bar past the
pedestal jaws D, thence obliquely downward to the longitudinal bar e³, thence along
the upper side of the latter beneath the columns' e, thence obliquely upward to the

page_text: under side of the longitudinal bar e¹, and thence along the under side of the latter
to its end and up against the end.
The longitudinal bars el e³, the pedestal jaws D' and the brace-bar e of each
frame are secured together by bolts d', extending transversely through the longi-
tudinal bars and brace-bar and lengthwise through the pedestal jaws. This feature
of construction may be well understood by reference to Fig. 4.
The pedestal jaws D³ are secured to the longitudinal bars e¹ e and the brace-bar e
by bolts d, applied similarly to the bolts d'. The longitudinal bars ele, the brace-
bare, and the pedestal jaws D³ are secured together by similar bolts d. Similar
bolts e secure the columns e and the columns e to the longitudinal bars and brace-
bar. The side frames E are connected by cross-bars G, which may be bolted or other-
wise fastened to the longitudinal bars e¹.
H designates bolsters which are secured together by bars I I', extending length-
wise of the truck. The bars I I¹ are arranged in pairs. Each bar of a pair has a
horizontal portion and inclined end portions. The horizontal portions of the bars I I'
of a pair are opposite, and the inclined end portions converge and are together bolted
or otherwise secured to the bolsters. Between adjacent pairs of the bars I I' a
central bolster J is secured. This is provided with a cavity for the reception of a
king-bolt or other swivelling device. It will be seen that the three bolsters are
secured together to form in effect one structure, which extends entirely across the
truck. The ends of the bolsters H extend between the pairs of columns e e. Each
bolster His made of three parts ³ ³ ³ and of any suitable material. The part h¹
of each bolster H is secured to the brace-bar e and to the lower longitudinal bars e
of the two frames E. As shown, the lower part 1 of each bolster H is made of
an I-beam or girder and notched on the under side near each end to embrace the
bars ee, its flanges fitting between the columns eet. The part of each
bolster H is shown as consisting of a trough-shaped or U-shaped beam having its
ends extended between the pairs of columns e e. The sides of this part h³ near the
ends are provided with lugs or jaws j, adapted to embrace the adjacent columns.
These jaws embracing the columns preclude any end wise movement of the parts ³
independently of the columns, but leave the part free to rise and fall between the
pairs of columns. The part h³ of each bolster H is shown as consisting of a trough-
shaped or U-shaped beam, provided with jaws j on the sides near the ends embracing
the columns. This part of each of said bolsters may therefore rise and fall while
secured against end wise movement independently of the columns. The part ³ of
each bolster H is shown as having a truss-bart combined with it. It is to this
part of each bolster H that the bars I are secured. The several parts h¹ h³ ³ of
each bolster H are unconnected save through the interposition of springs K' K³
The springs K' rest upon the lower part and support the part h³. The latter
support the springs K, and these springs sustain the part h. The springs may be
seated in the parts of the bolster H in any approved manner.
It is advantageous to employ two sets of springs, with a divided bolster, as
described, because the resilience afforded by a given length of springs may be
obtained and yet the springs may individually be made of such lengths as to be free
from any serious tendency to deflection out of a vertical line.
It remains for me to describe the manner in which the frames E are supported.
The journals may be of ordinary form. This is also true of the bearings B and oil-
boxes C. Keys L are interposed between the tops of the bearings and the tops of the
oil-boxes.
Above the oil-boxes are rockers M, one for each box. Each box and rocker have
combined with them a stirrup N. Above each stirrup are springs O, and these springs
take the strain from the frames E to the stirrups.
Each of the rockers M (see particularly Fig. 5) is approximately T-shaped. Its
upper portion has an extended arc-shaped surface m, upon which the cross-bar n of
the adjacent stirrup N rests. The ends of this upper portion beyond the arc-shaped

page_text: The
surface m are extended upwardly to form projections ml, which may limit the action
of the rocker by contacting with the cross-bar of the stirrup. The lower part of
each rocker is provided with a bottom are-shaped surface m³, which bears upon the
top of the adjacent oil-box C. Each oil-box C is provided with two projections c¹²
from its top, and between these two projections the lower part of the rocker works.
Each stirrup N consists of two upright parts or bars n' n² and a cross-bar n.
cross-bar extends between the upright bars n¹ n' at a short distance from the upper
ends of the latter. All the parts may be formed integral. The opposite sides of each
pair of pedestal jaws D¹ D D³ are provided with vertical grooves d. The upright
bars n¹ n³ of the stirrup fit in these grooves and the stirrup is therefore free to work
up and down within the pedestal jaws. Each rocker is provided on its sides with
lugs m³, which have curved side surfaces and extend into the slots n of the corre-
sponding stirrup. The curvature of the side surfaces of the lugs enables the rockers
to rock or oscillate, despite the fact that the lugs extend into the slots n³. The stirrups
being engaged in the grooves of the pedestal jaws cannot move out of the pedestal
jaws, although they are free to move up and down within the same, or to permit of
the upward and downward movement of the pedestal jaws relatively to them. As the
lugs of the rockers engage with the stirrups, the rockers are maintained in place,
although allowed to rock or oscillate.
The springs O may be secured in place in any way. I have shown two pairs or
sets of springs as arranged between each pair of pedestal jaws. On the top of the
cross-bar of the stirrup belonging to each pair of pedestal jaws I have shown a seat P,
consisting of a flat plate having upwardly-extending pinlike projections entering the
coils of the springs. The seat is maintained in position upon the cross-bar of the
stirrup by flanges d', extending from the pedestal jaws. Similar spring seats P' are
shown as arranged above the springs and similarly retained in place by flanges d'.
Having now particularly described and ascertained the nature of
my
said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent I declare that what I claim is.:
1. In a car-truck, the combination, with side frames provided with bearings, of a
bolster made in three parts, comprising upper, middle and lower parts, and springs
arranged between the lower and middle parts, and other springs arranged in pairs
between the middle and upper parts, substantially as specified.
2. In a car-truck, the combination, with side frames provided with bearings for
three pairs of wheels, of two bolsters connected together and severally composed of
three parts, comprising an upper, a central, and a lower part, springs arranged between
the lower and middle parts of each of said bolsters and springs arranged between the
middle and upper parts of each bolster, substantially as specified.
3. In a car-truck, the combination, with frames provided with bearings, of a bolster
comprising an upper, a middle, and a lower beam, spiral springs arranged near the
ends between the lower and middle beams, and other spiral springs between the
middle and upper beams, substantially as specified.
4. In a car-truck, the bolster, comprising the upper, the middle, and the lower
portions, extending across the truck, and spiral springs arranged between the upper
and middle portions, and other spiral springs arranged between the middle and lower
portions, substantially as specified.
5. In a car-truck, the combination of a side frame having two longitudinal bars,
one above the other, and pedestal jaws consisting of pieces fitted and secured between
the two longitudinal bars by means of bolts extending transversely through the said
bars, and lengthwise through the pedestal jaws, substantially as specified.
6. In a car truck, the combination, with a side frame and an oil-box working within
pedestal jaws comprised in said side frame, of a rocker supported upon the oil-box,
and a stirrup supported upon the rocker and engaged with said pedestal jaws, sub-
stantially as specified.
7. In a car-truck, the combination, with a side frame and an oil-box working within
pedestal jaws comprised in said side frame, of a rocker supported upon the oil-box,

page_text: and a stirrup consisting of two upright bars and a cross-bar, the cross-bar resting
upon the rocker and the upright bars being engaged with the pedestal jaws, substan-
tially as specified.
8. In a car-truck, the combination, with a side frame and an oil box working within
pedestal jaws comprised in said side frame, of a rocker supported upon the oil-box,
and a stirrup consisting of a cross-bar resting upon the rocker, two upright bars
engaging with the pedestal jaws and provided with vertical slots receiving lugs with
which the rocker is provided, substantially as specified.
Dated this 25th day of February 1890.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.