Improvements in Dumping Waggons.
Year: 1893

page_text: Date of Application, 3rd Jan., 1893-Accepted, 25th Feb., 1893
COMPLETE SPECIFICATION.
[Communicated from abroad by WILLIAM ARTHUR THACHER, residing at the
"Astor House," corner of Broadway and Barclay Street, in the City of New
York, in the County and State of New York, United States of America,
Engineer.]
Improvements in Dumping Waggons.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent
Agents, 45 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 invention relates to dumping cars or waggons and embraces a car having a
pivotally mounted body, latch mechanism whereby the car body may be effectually
maintained in its horizontal position, and compressed air mechanism under the
control of the engineer whereby the car body may be tilted to dump its contents
and then returned to its horizontal position all as hereinafter fully described.
In the accompanying drawings
:-
Figure 1 is a top view of a dump car embodying the invention, a portion of the
floor of the car being broken away to disclose the latch and compressed air
mechanism;
Figure 2 is a side elevation of same;
Figure 3 is a vertical transverse section of same on the dotted line 3-3 of
Figure 1, the car body being shown in one tilted position by solid lines and in its
other tilted position by dotted lines ;
Figure 4 is a detached side elevation of the latch mechanism with the supporting
beams, the two positions of said mechanism being indicated and a portion of said
supporting beams being in section on the dotted line 4--4 of Figure 5;
Figure 5 is a detached top plan view of said latch mechanism, the latch cylinder
being in section;
Figure 6 is a detached side elevation of an enlarged scale of the air cylinder,
partly broken away, forming a part of the mechanism for dumping the car; and
Figure 7 is a front view of same.
In the drawings A designates the car body having doors B at opposite sides, and
mounted on the truck frames by means of the central pivotal bearings C, which
permit said body to tilt to either side, as shown in Figure 3, when actuated by the
compressed air mechanism.
The car body A is preserved in its horizontal position by means of the curved
bars E secured to the lower side of the car body, and the co-operating latches F G,
which are pivotally carried by the hangers H, secured to the truck see Figure 4,
and engage the inner surfaces of said bars E, the latter being formed at their
centre or lower extremity with the recesses I, to receive the engaging edges of the
latches F, G, when it is desired that the car body shall be locked in its horizontal
position. The latches F, G, will be connected together by leverage mechanism, so
that both may operate simultaneously in locking or freeing the car body, and in
the present instance, as shown in Figures 4 and 5, the latches F, G, are connected
respectively by links F', G', with the levers J K, which are mounted on pivotal
bearings L, M, and connected by a rod N extending from the shorter arm of the
lever J to a point conveniently near the outer end of the lever K. At the point at
which the longer arm of the lever J is coupled with the link F' there is secured
the outer end of the piston rod O carrying the piston P within the auxiliary air
cylinder Q. which is supported in the hanger R from the middle longitudinal
beams of the car truck and provided with air pipe connections S leading to a source
of compressed air under the control of the engineer.

page_text: Upon the compressed air being allowed to pass into the cylinder Q through the
pipe connections S, the piston P will be driven toward the far end of the cylinder
and the rod O will draw inward the longer arm of the lever J, link F¹ and
connecting arm of the latch F, turning the latter on its pivot and elevating its
engaging edge above the recess I of the adjoining bar E, while at the same time
the movement of the lever J is communicated through the rod N, lever K and
link G' to the lower arm of the latch G, turning the latter inward and elevating
its engaging edge above the recess I of its adjoining bar E, as shown by dotted
lines in Figure 4. The latches F, G are thus simultaneously elevated from their
engaging recesses I, I, by the action of the compressed air on the piston P and the
movement communicated by the latter to the levers J, K, and rod N; and the said
latches will remain in this elevated position so long as the pressure of the air is
maintained on the piston P, but thereafter the spring T connected with the levers
will exert its tension to effect the return of the latches, levers and piston to their
normal position, which is that illustrated in Figure 5.
When the engaging edges of the latches F, G, are above the recesses I, I, of the
bars E, the car body A will be free to be turned in either direction on its
bearings C; and the compressed air mechanism by which the car body is turned on
its bearings C to dump its load and then returned to its horizontal position form an
important part of the present invention and commence to operate immediately upon
the elevation of the latches F, G, from the recesses I of the bars E.
The mechanism for tilting the car body consists of the cylinder V, piston W,
hinged rod X, main pipes Y, Z, for compressed air, and the connections a, b, having
valves c and extending respectively from the main pipes Y, Z to the upper and
lower ends of the cylinder V. The cylinder V is secured in an inclined position to
the truck frame, being supported by the bracket d, and girders e, and as stated
above has an inlet a for compressed air at its upper end and a like inlet b for
compressed air at its lower end, only one of said inlets being in use at one time.
The piston W is connected by the hinged rod X with the body A, as shown in
Figure 3, an iron girder g and bolt being conveniently provided to receive the
upper end of said rod. The lower end of the rod X is secured in a hinged manner
to the upper surface of the piston W and is practically enclosed by the oblong
extension forming a part of or secured to and moving with the said piston. The
extension i passes through a stuffing box or gland; in the upper cylinder head and
operates in the nature of an enlarged hollow piston rod enclosing the hinged rod X
and permitting the latter to have a movement from a line parallel with the
longitudinal centre of the cylinder V, as indicated in Figure 3. The normal
position of the piston W is at about the middle of the cylinder V, and hence said
piston may be moved toward either end of said cylinder with the result of tilting
the car body in either direction desired.
To tilt the car body to the position shown by full lines in Figure 3, the
compressed air will be turned into the pipe Z, whence it will pass through the inlet
pipe into the lower end of the cylinder V and drive the piston W and rod X
upward, turning the body A on its bearings and dumping the load, after which the
compressed air having been cut off from the pipe Z and turned into the pipe Y and
inlet a, the piston W will be depressed to its normal position and return the car
body to its horizontal position.
Should it be desired to tilt the car body to the position shown by dotted lines in
Figure 3, the compressed air will be turned into the pipe Y, whence it will pass
through the inlet à into the upper end of the cylinder V and depress the piston W,
thus pulling downward on the rod X and car body and causing the latter to dump
its load. The main pipe lines Y Z will lead to a source of compressed air and be
under the immediate control of the engineer of the train, who will turn the air into
either pipe Y, Z, in accordance with which side of the track it may be desired shall
receive the load.
As stated above the mechanism for tilting the car body is not set in motion until
the latches F, G, have been elevated from the recesses I of the bars E, and hence

page_text: it will be understood that the engineer will first free the latches and then tilt the
car body. As soon as the car body has commenced to move and the recesses I are
beyond the latches F, G, the air may be cut off from the latch cylinder Q, and the
engaging edges of the latches allowed to follow the inner curved surface of the
bars E, against which said edges will be held by the tension of the spring T.
The latches F, G, being thus permitted to follow the surface of the bars E, will,
when the car body has attained its horizontal position snap into the recesses I, I,
and thus lock said body, the air being at such time cut off from the pipe Y or Z
according to which was in use.
The air pipe S for the latch cylinder Q, and the main air pipes Y, Z, for the
dumping cylinder V, will extend to and from said cylinders and pass the entire
length of the car in order that they may be coupled at their ends in a well known
manner to the adjoining ends of like pipes provided in the other cars of the train,
it being intended that the cars shall all be alike and that the air pipes shall be
coupled together and lead to the engine so that the dumping of the entire train may
be accomplished at once and be under the direct control of the engineer. If for
any reason it should be desired not to dump any one or more cars while unloading
the rest of the train, such car or cars may be cut off from the action of the com-
pressed air by closing their inlet valves c in the pipes a band the valve f
(Figure 3) in the pipe leading from the pipe S to the latch cylinder Q, thus allowing
the air to pass through the pipes S, Y, Z, of the particular car or cars without
affecting the same, but in condition to tilt the remaining cars it may be desired to
dump.
The doors or sides B, B of the car body are pivotally secured or hinged at their
upper edges and at their lower edges, when closed are engaged by the pivoted
latches m whose cam arms n extend inward in position when the car body is tilted
to come into contact with the frame of the truck and be thereby moved upward,
freeing the door B and permitting the latter to open, as shown in Figure 3,
preparatory to the contents of the car being dumped. Upon the return of the car
to its horizontal position, the arms n of the latches m leave the truck frame and
their weight operates the latches to again lock the door, which as the car body is
returned to normal position swings inward to a closed condition, The locking and
unlocking of the doors B is thus rendered automatic and all manual labour
avoided.
The truck frame supports on its transverse beams t and at opposite sides of the
car the coiled springs or cushions w, which, as clearly indicated in Figure 3 prevent
the car body when tilted from coming into violent contact with the truck frame,
the springs receiving the first pressure of the body and preventing undue
concussion.
The general operation of the elements constituting the invention has been
explained above, and from the foregoing description taken in connection with the
accompanying drawings, it will be understood that the car is of the most
substantial and durable kind, that its operation is reliable that the car body may be
tilted to dump its load at either side of the track; that it is locked automatically
after returning to its horizontal position, and that the entire train is under the
absolute control of the engineer in his cab, who, by simply turning the valves may
quickly dump the load and return the car body to position whether the train is
stationary or in motion. It is to be noted also that by means of a single air
cylinder placed at one side of the centre of the car, the car body may be dumped
in either direction at will and returned to position under the positive control of
the piston W and rod X.
Having now particularly described and ascertained the nature of the 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, the tilting car body, combined with the dumping cylinder, the piston
therein having the hollow extension passing through the head of said cylinder, the

page_text: hinged connecting rod operated by said piston and the pipe connections leading to
said cylinder; substantially as set forth."
2. In a car, the tilting car body, combined with the dumping cylinder, the piston
therein having the hollow extension passing through the head of said cylinder, the
hinged connecting rod within said hollow extension, and the main supply pipes
leading to the opposite ends of said cylinder; substantially as set forth.
3. In a car, the pivotally mounted car body and means for tilting said body to
dump its load, combined with the pivoted latches engaging said body to lock it in a
horizontal position, the auxiliary cylinder having a piston and rod, and mechanism
intermediate said rod and said latches for imparting motion from the former to the
latter; substantially as set forth.
4. In a car, the pivotally mounted car body and means for tilting the same to
dump its load, combined with the pivoted latches engaging said body to lock it in a
horizontal position, the auxiliary cylinder and intermediate connections for freeing
said latches from the car body, and the spring for re-engaging said latches
substantially as set forth.
5. In a car, the pivotally mounted car body and means for tilting the same to
dump its load, combined with the downwardly extending curved bar secured to the
bottom of the car body, the pivoted latch engaging the same, the auxiliary air
cylinder connected with said latch to operate the same, and the pipe connection
leading to said cylinder; substantially as and for the purposes set forth.
6. In a car, the pivotally mounted car body and means for tilting the same,
combined with the downwardly extending curved bar secured to the bottom of the
body, the pivoted latch engaging the same, the auxiliary air cylinder connected
with said latch to operate the same, the pipe connection leading to said cylinder,
and the spring acting on said latch; substantially as set forth.
7. In a car, the pivotally mounted car body having the downwardly extending
curved bars, combined with the pivoted latches engaging said bars, leverage
mechanism connecting said latches, and the auxiliary air cylinder connected with
said mechanism for simultaneously operating said latches; substantially as set forth.
8. In a car, the pivotally mounted body having the downwardly extending
curved bars, combined with the pivoted latches engaging said bars, the levers J, K,
connected together by the rod N and by links with said latches, the spring T
connected with said levers, and the air cylinder having its piston rod also connected
with said levers; substantially as set forth.
9. In a car, the body pivotally mounted on the truck to tilt to either side,
combined with the dumping cylinder, the piston therein, the hinged rod connecting
said piston and body, and pipe connections leading to both ends of said cylinder,
the dimensions and relative relation of the parts being such that the position of the
piston will be at the middle of the cylinder when the car body is in a horizontal
position and that the body may be tilted to either side under the action of the air
in the said cylinder; substantially as and for the purposes set forth.
10. In a car, the pivotally mounted car body, and means for securing the same in
horizontal position, combined with compressed air mechanism for releasing said
body the dumping cylinder with compressed air connections leading thereto, and
the piston within said dumping cylinder and connected with the car body;
substantially as set forth.
11. In a car, the pivotally mounted car body, combined with the dumping
cylinder for tilting the said body to dump its load, the latch engaging said body to
lock it in a horizontal position, the auxiliary air cylinder having a piston and rod,
the latter being connected with said latch, and pipe connections for compressed air
leading to said cylinders, substantially as and for the purposes set forth.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.