IMPROVEMENTS IN BOGIES OR TRUCKS FOR RAILWAY VEHICLES
Year: 1885

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake and Co, Patent Agents;
Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of my invention for "IMPROVEMENTS IN BOGIES OR TRUCKS FOR RAILWAY
VEHICLES "to be as follows:-
This invention relates to bogies or trucks for railway vehicles and has for its
object to lessen the side motion of the bodies of vehicles and to obviate thrusts of
the wheel flanges against the rails, occasioned by the swing of the said bodies.
My improvement consists in the combination with the axles of a vehicle, of
journal boxes containing bearings operating in conjunction with the axles so as to
be capable of moving with the latter in the direction of their length; a truck or
bogie frame provided with slide ways in which the journal boxes and axles may
move in the direction of the lengths of the axles; and rockers arranged upon the
tops of the journal boxes and supporting the said frame, said -rockers having
arc-shaped upper surfaces and fulcrum. pieces provided with parallel sides and arc-
shaped bottoms fitting in seats whicb are located upon the tops of the journal-boxes
and which have flat bottoms and flaring sides. By means of this combination of
parts the axles and journal-boxes, when moved laterally with reference to the said
frame, will produce an oscillation of the rockers resulting in an elevation of the
truck or bogie frame and of the body of the vehicle. The resistance of the frame
and body to the oscillation of the rockers will neutralize much of the; tendency
which arises towards producing a lateral movement of the wheels and.axles and
journal-boxes. When the tendency of these parts to move laterally is so great that
it cannot be neutralized by the weight of the frame and body the force will be
expended in elevating the said frame and body. In this way almost all of the
swinging motion which ordinarily occurs with the bodies of vehicles is obviated..
Dated this 30th day of June 1885.

page_text: Improvements in Bogies or Trucks for Railway Vehicles.
I, HENRY HARRIS LAKE, of the firm 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 :-
This invention relates to bogies or trucks for railway vehicles and has for its
object to lessen the side motion of the bodies of cars or vehicles and to obviate
thrusts of the wheel flanges against the rails occasioned by the swinging of the
said bodies.
My improvements consist in the combination with the axles of a car of journal
boxes containing bearings operating in conjunction with the axles so as to be
capable of moving with the latter in the direction of their length, a truck frame
provided with slide ways in which the journal boxes and axles may move in the
direction of the lengths of the axles and rockers arranged upon the tops of the
journal boxes and supporting the truck frame, said rockers having are shaped
upper surfaces and fulcrum pieces provided with parallel sides, and are shaped
bottoms fitting in seats which are located upon the tops of the journal boxes and
which have flat bottoms and flaring sides. By means of this combination of parts
the axles and journal boxes when moved laterally with reference to the truck
frame will produce an oscillation of the rockers resulting in an elevation of the
truck frame and car body. The resistance which the truck frame and car body
offer to the oscillation of the rockers will neutralize much of the tendency which
arises towards producing a lateral movement of the car wheels and axles and
journal boxes. When the tendency of these parts to move laterally is so great
that it cannot be neutralized by the weight of the truck frame and car body the
force will be expended in elevating the truck frame and car body. In this way
almost all of the swinging motion which ordinarily occurs with car bodies is
obviated.
In the accompanying drawing figure 1 is a plan or top view of a car truck
embodying my improvement.
Figure 2 is a side view of the same.
Figure 3 is an end view thereof.
Figure 4 is a view of certain parts seen from one end of the car truck.
Figure 5 is a section of certain parts taken length wise of the car truck.
Similar letters of reference designate corresponding parts.
A designates wheels secured in the usual manner to axles B. The ends of the
axles B fit-in journal boxes C which are arranged in slide ways in the truck frame,
the slide ways being so constructed that the journal boxes and axles may move
therein in the direction of the length of the axle.
The truck frame consists of two side pieces D and transoms E. The side
pieces D. severally consist of an arch bar a and an inverted arch bar b fastened
together at the ends and to columns c by bolts d and extending one above and the
other below columns e. The columns c form the slide ways for the journal
boxes C. A tie rod f also forms part of each side piece D and extends from the
lower part of the columns c, under the columns e; it is secured to the columns c, e

page_text: by bolts; preferably the same bolts which secure the arch bars a, b to said
columns. All the parts of the side pieces D may be made of metal.
The transoms E severally consist of two bars extending between the columns 6
of the side pieces D; one bar being arranged near the lower ends, and the other
bar being arranged near the upper ends of the said columns. The bars are secured
to the columns by bolts passing transversely through them and through flanges on
the columns.
Under the upper transom bar E is a bar F below which is an anglo pieco G.
Truss rods H pass under angle piece G, and are secured by nuts engaging with
screw threads, to shoulders on the upper transom bar E. On the top of the upper
transom bar is a bearing g for a center pin. The transom bars E and the bar F
may be made of wood.
I designates rockers which are interposed between the journal boxes C and the
parts on the side pieces D of the truck frame by which the weight of the truck
frame and car body is transmitted to the journal boxes. In the present instance
these rockers are interposed between the journal boxes and the inverted arch
bars b. They may be made of iron, steel or other suitable material. Each of
these rockers I has, on the under side, a fulcrum piece h, which has parallel sides
and a curved or arc-shaped bottom. The curve of the bottom being eccentric to
the center upon which the rocker is capable of oscillating or rocking. Indeed, the
curve of the bottom of the fulcrum pieces is a very flat curve struck or described
from a radius very much longer than the distance between the center of the bottom
and the point of oscillation or rocking.
The fulcrum piece fits in a seat i which is flat at the bottom or approximately so,
and whose sides are preferably made slightly flaring to admit of the movements of
the rocker. The seat i is formed in the top of the journal boxes. The upper
surface 8 of each rocker is curved, or arc shaped where the adjacent inverted rod
bar b rests upon it and at the ends of this arc shaped surface lugs, or upwardly
extending portions are provided so as to extend upwards on opposite sides of the
said inverted arch bar b. The surfaces of the lugs ; which are adjacent to the
inverted arch bar bare slightly farther apart than the width of the inverted archi
bar band preferably they diverge or flare towards the outer end to facilitate the
oscillation or rocking of the rockers. The curved surfaces at the bottoms of the
fulcrum pieces of the rockers and the curved surfaces s are of such eccentricity to
the point of oscillation of the rockers that in order for the rockers to oscillate to
one side out of their normal positions they will be obliged to raise the side pieces D
and consequently the car body. Consequently when the disturbing force ceases,
or is expended, the gravity of the car body and the side pieces D will cause the
rockers to assume their normal position again. The resistance which the weight of
the car body and side pieces D, offers to the movement of the rockers, tends to
prevent oscillation of the rockers. As force tending to oscillate the rockers will be
expended in elevating the car body the latter will not be subject to the swinging
notion which ordinarily occurs during the travel of a car.
On the sides of the rockers are lugs k which fit in recesses in the columns c.
These lugs are not quite so wide as the recesses in which they fit, and they are
preferably arc-shaped, so that they will not interfere with the oscillation of the
rockers.
By overcoming much of the lateral or swinging movement which ordinarily
occurs in a car body and in its truck frames, I obviate thrusts of the wheel flanges
against the rails and therefore increase very materially the durability of the
wheel.
Having now particularly described and ascertained the nature of the said
invention 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,
I. The combination with axles of journal boxes enclosing bearings operating in
conjunction with the axles, so as to move with the latter in the direction of their

page_text: length, a truck frame provided with slide ways in which the journal boxes and
axles may move in the direction of the lengths of the axles and rockers arranged
upon the tops of the journal boxes and supporting the truck frame, the rockers
having arc-shaped upper surfaces whereby when the axle and journal boxes are
moved laterally relatively to the truck frame, the truck frame will be raised,
substantially as specified.
II. The combination with axles of journal boxes enclosing bearings operating in
conjunction with the axles so as to move with the latter in the direction of their
length, a truck frame provided with slide ways in which the journal boxes and
axles may move in the direction of the lengths of the axles and rockers arranged
upon the tops of the journal boxes and supporting the truck, said rockers having
arc-shaped upper surfaces and being provided with fulcrum pieces having approxi-
mately parallel sides and arc-shaped bottoms fitting in seats which are located
upon the tops of the journal boxes and which have flat bottoms and flaring sides
substantially as specified, whereby when the axles and journal boxes are moved
laterally with relation to the truck frame, the truck frame will be raised.
III. The combination with a car body or truck frame of a slide way forming
part thereof and journal boxes C fitting within but unconnected to the slide way,
a rocker arranged between the journal boxes and the car body or truck frame and
being adapted to rock in a direction transversely to the length of the car body or
truck frame and lugs k extending from the rockers and entering recesses in the
slide way, substantially as specified.
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