Year: 1884

page_text: TO FASTEN.
Lever E, is pushed back to first position, when locking bolt F, immediately
5 slips. through sliding bar M, and securely locks the bottoms from accidentally
unloading

page_text: "
I. WILLIAM DORNAN, of 33 Walmsley Street Spring Bank Hull. in the County
of York. Commercial Traveller, do hereby declare the nature of my invention for
AN IMPROVED RAILWAY COAL TRUCK," and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
The Truck, which can be made either of wood, or iron, is divided lengthwise,
inside, into seven parts; from one seventh part at each end of frame of Truck, is
inclined to a few inches from the top of the end; as.shown in section of N° 1,
and such spaces are reserved for counter-balances of bottom doors.
The bottom doors open lengthwise, one at each end; and, when in the act of
unloading, rest upon the Axles of Truck, as shown by dotted line of section No. 1.
The bottom doors work upon centres or pins fixed underneath them, so; that
when fully or in part open, there is no projecting ledge for the coals to rest upon.
To the under side of the doors is, firmly fixed a rod, bent to the same angle as
the bottom is to the frame when open; the end of such rod is further bent at its
proper distance, to form a quadrant from pivot of bottom; as H, H, Section N° 1;
and, in the case of having draw bar and spring, the quadrant part is divided so
that it works on either side of such draw bar.
A Counter-balance as H; N° 6, is required for each end, sufficiently heavy to
push the bottoms from the open, to its normal position.
The counter-balance has two arms from its under side, and divided to the
relative distance of arins of bar H, H, and hook to such arms by means of pins
which are firmly rivetted or welded thereon, as shown in section N° 1, where
H rests upon H, H.
The Counter-balance is guided up and down by a gaurd on either side, fastened
to the end of Truck, a projecting pin or rod on counter-balance working in a slot
of gaurd, as shown Section N° 1.
Under the centre cross beam of Truck is placed a sliding bar of sufficient
strength to bear the weight of load; the bar must have projections or teeth from
each side, as shown by M, N° 5, the width of such bar depending upon the under
side of centre cross beam, requiring to be a little less, (not including the teeth or
projections) than such beam in width.
The sliding bar M, is held up by plates screwed to centre beam and which are so
fixed that the sliding bar can only be drawn so far forward, and pushed back to
former position.
The sliding bar M, is moved backward and forward, by lever E, No 4, and
N° 5; a pin and loose pulley working in groove or opening of sliding bar, connecting
the two together.
The bottom doors are cut out, so that when sliding bar M, is drawn forward, the
teeth or projections come immediately under such openings, and if the Truck be
loaded, the weight of load pushes bottoms downwards, if not loaded, the counter-
balances keep the bottoms in same position.
A rod works loosely in frame of. Truck at the front side, as A, N° 7; at each
end is a catch working loosely on rod A, as B, N° 2; these catches are
adjusted so as to allow the bottoms after unloading, to raise themselves above the
level of the line, but still keep them from closing altogether, by a small arm
fastened to door.
A Small lever, C, resting upon rod A, as shown in section N° 3, is pressed on
rod A, and raises catchies B, B, simultaneously by means of projection on rod A, as
shown by A, A, N° 7.
A thin partition of wood or iron, divides the load across the centre.

page_text: COM
be lifted out on account of pin through slot or groove in F.
TO UNLOAD.
First, locking bolt F, must be lifted on to notch in lever C, when by drawing
forward lever E, which is connected with sliding bar M, the weight of coal or load
pushes bottoms downwards and so empties itself; the bottoms are kept open by
catches B, working loosely on rod A.
to H H.
TO FASTEN:
Lever E, is pushed back to first position, when locking bolt F, immediately
slips through sliding bar M; and securely locks the bottoms from accidentally
opening.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is;
1. The principle and method, of Counter-balancing the bottom doors of Truck;
so that when open and being released from catches, they are forced automatically
to the closed position.
2. The principle and method, of unloosing and fastening both bottom doors
simultaneously with one bolt, or sliding bar.
3. The method, of holding open both bottom doors of Truck, by one rod and
loose catches on same; also, method of releasing both catches by one lever.
4. The principle and method, of locking the bolt or sliding bar M; by Automatic
locking bolt.
5. The principle and method, of being able to unload; and readjust bottom doors,
from centre of Truck, without the operator moving therefrom.
Dated this 15th day of March 1884.