IMPROVE- MENTS IN THE CONSTRUCTION OF COLLIERY WAGGONS, TUBS, OR CORVES, AND IN PROVISIONAL SPECIFICATION
Year: 1862

page_text: LETTERS PATENT to Charles Henry Plevins, of Dunston Hall, in the
County of Derby, Colliery Owner, and Henry Rider, of Rotherham, in
the County of York, Colliery Engineer, for the Invention of "IMPROVE-
MENTS IN THE CONSTRUCTION OF COLLIERY WAGGONS, TUBS, OR CORVES, AND IN
PROVISIONAL SPECIFICATION left-by the said Charles Henry Plevins
and Henry Rider at the Office of the Commissioners of Patents, with
their Petition, on the 1st August 1862.
We, CHARLES HENRY PLEVINS, of Dunston Hall, in the County of Derby,
Colliery Owner, and HENRY RIDER, of Rotherham, in the County of York,
Colliery Engineer, do hereby declare the nature of the said Invention for ")
"IM-
PROVEMENTS IN THE CONSTRUCTION OF COLLIERY WAGGONS, TUBS, OR CORVES, AND IN
APPARATUS FOR TIPPING OR DISCHARGING THE SAME," to be as follows, that is
to say:-
This Invention has for its object the discharge of coal from the waggon, tub,
or corf into trucks or vessels with less breakage of the large coal than by the
mode now in use. The improvements in the waggons, tubs, or corves, and
for brevity I shall herein-after use the term "tub," consist in the employment

page_text: '
of an end door, hung and fastened in a peculiar manner, which allows the
door by a self-acting arrangement to be raised and released from its fastenings,
at the same time that it swings open by the pressure of the coal against it
when the coal is being discharged from the tub into the screen or shoot, by
such raising of the end door giving ample room for the free discharge of large
coal. The manner in which the end door is hung or attached to the tub, the
method of fastening the door, and the arrangement by which the tub is tipped,
and the end door raised and released from its fastenings, are as follows:-The
upper side or edge of the end door swings upon a horizontal bolt or bar, to
which it is hung by bands of iron or other metal, the said. bolt or bar being
placed across the end of the tub at or near the top thereof. Each end of the
bolt or bar is attached to one end of a lever or arm, the other end of which is
attached to the side of the tub by a bolt, pin, or other joint, which allows the
lever or arm to work freely in a vertical plane. The lower side or edge of the
door is provented from opening when not required by two pieces of angle iron
or other suitable material acting as stops, one side of each of which is fixed
upon the upper side of each sole of buffer at one end of the tub, and the other
sidės rise in front of the end door. In order to fasten the door it 'is raised,
the levers or arms before described admitting of this, and then dropped behind
the said stops. When the tub is to be tipped or discharged it is placed upon
a platform attached to a transverse axis working in proper bearings, and
placed so far from the centre of the platform as to allow a sufficient excess of
weight to be on that end which is next to the screen or shoot. To this axis
is attached a lever with a weight at its extremity. This lever is fixed at
such an angle to the platform as will give the minimum resistance to the
proper speed of descent to the loaded tub and the maximum weight requisite for
the proper ascent of the empty tub; or a pulley may be fixed upon the axis,
and a rope or chain, with a weight at the end, may be attached to the circum-
ference of the pulley to effect this object, or the appliances above nained may
be attached to both ends of the axis if requisite. A break wheel is also
attached to the said axis, upon which a break acts to control the descent and
ascent of the platform and tub, by which means the descent and ascent can be
prevented or regulated, as occasion may require, at the will of the banksman
or attendant. When the platform bearing the tub has nearly reached the
bottom of its descent, the ends of the levers or arms attached to the sides of
the tub, and to which the bolt or bar upon which the end door swings is
attached, as before described, strike upon bolts or studs projecting from the
framework of the loading stage, or the supports of the screen or shoot, and

page_text: raise the door, thus releasing it from its fastenings before described to a
sufficient height above the sides of the tub to allow of the free passage of the
coal under the bolt or bar to which the door is hung. The door may be lifted
to any required height according to the length of the levers or arms attached
to the sides of the tub, and the position of the projecting bolts or studs upon
which they strike. The height to which the door may be raised can also be
modified by making the levers or arms attached to the sides of the tub curved
in a vertical direction upwards or straight. A small portion of the end door
is cut away under the ends of the bolt or bar upon which it is hung, in order
to allow it to swing clear of the above-named projecting bolts or studs. When
the tub has reached the bottom of its descent, its soles at the lower end of the
tub rest upon the screen or shoot, which passes a short distance under the
bottom of the tub, and thus the coal only falls a few inches in sliding out of
the inclined tub into the screen or shoot. By the descent of the tub is meant
the inclined position which it assumes by the turning of the platform on its
axis, and by the ascent is meant its return to a horizontal position. Any
degree of inclination may be given to the tub which may be necessary for
the free discharge of the coal. The tub is retained upon the platform' when
in an inclined position by means of the ends of the tram rails being turned up,
or be chocks
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Henry Plevins and Henry Rider in the Great Seal
Patent Office on the 31st January 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we,.CHARLES
HENRY PLEVINS, of Dunston Hall, in the County of Derby, Colliery Owner,
and HENRY RIDER, of Rotherham, in the County of York, Colliery Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the First day of August, in the year of our Lord One
thousand eight hundred and sixty-two, in the twenty-sixth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
Charles Henry Plevins and Henry Rider, Her special license that we, the
said Charles Henry Plevins and Henry Rider, our executors, administrators,
and assigns, or such others as we, the said Charles Henry Plevins and
Henry Rider, our executors, administrators,, and assigns, should, at any time

page_text: agree with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise;
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN THE
CONSTRUCTION OF COLLIERY WAGGONS, TUBS, OR CORVES, AND IN APPARATUS FOR
TIPPING OR DISCHARGING THE SAME," upon the condition (amongst others) that
we, the said Charles Henry Plevins and Henry Rider, by an instrument in
writing under our hands and seals, should particularly describo and ascertain
the nature of the said Invention, and in what manner the same was to bo
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW. KNOW YE, that we, the said Charles Henry Plevins and Henry
Rider, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, reference being had to the
Drawings hereunto annexed, and to the letters and figures marked thereon
(that is to say):
:-
Our improvements in the waggon, tub, or corf consist in the employment
of an end door, bung and fastened in a peculiar manner, which allows the
door by a self-acting arrangement to be raised and released from its lower
fastenings, the pressure of the coal against the door causing it to swing out-
wards, and the door being at the same time raised, as above stated, the free
<lischarge of even the largest coal is obtained. The construction of the end
duor, and arrangements connected therewith, will be better understood by
reference to the annexed Drawings, in which Figure (1) represents an end
elevation,, and Figure (2) a side elevation, of one of our improved waggons,
tabs, or corves, with its tilting or tipping apparatus: The door (a) is hung
by bands of iron (6) or other metal to a horizontal bolt or bar (c) passing
across the end of the tub from side to side at or near the top thereof; each end
of the said bolt or bar is attached to or near to one end of a bar or arm (d),
the other ends of the said arms being attached to the sides of the tub by
bolts, pins, or other joints (6), which allow the arms to move freely in a
vertical plane. The door is kept in position by its own weight until raised
by the self-acting arrangement referred to above, and it is prevented from
swinging outwards by means of two pieces (f) of iron or other metal beut to
an angular form, one side of which is fixed upon the buffers (9) of the tub, or
in any other couvenient place, and the other side rises in front of the cud

page_text: door.
Instead of these angular pieces of iron, pieces of wood may be used for
the same purpose. A rest or stop (h) is placed under each of the side arms
to prevent their dropping too low. When the tub is to be tipped it is placed
upon a platform attached to a transverse axis (k) working in bearings, and
fixed so far from the centre of the platform as to allow a sufficient excess of
weight to be on that end which is next the screen or shoot (1). To this axis is or
are attached a lever or levers (m) with a weight at their extremities, the lever
or levers being fixed at such an angle to the platform as will allow it to tip
freely by the weight of the tub and its contents, and to return freely when the
tub is empty. Instead of the above-described levers, pullies with ropes or
chains and weights may be used if preferred. A break wheel (n) is also
attached to the said axis, upon which a break acts to control the descent and
return of the platform, by means of which the movement of the platform may
be either prevented or moderated. Instead of the break and wheel, a pawl
and notched wheel may be used, but we prefer the former. When the plat-
form bearing the tub has nearly reached the bottom of its descent, the ends of
the arms attached to the sides of the tub strike upon projecting bolts or
studs (o) attached to the loading stage, or to the screen or shoot, and raise
the door to a sufficient height to allow of the free passage of the coal under
the bolt or bar (c) to which the door is hung, and by such raising of the door
it is released from its lower fastenings, and the tub being now in an inclined
position, the coal slides out into the screen or shoot (l), and in doing so falls
only a few inches. The tub is retained upon the platform by two bars of
iron (p), bent into a suitable form to allow both axles of the tub to run under
them, the bent bars being fixed upon the platform. The Drawings illustrate
our improvements as applied to an ordinary colliery tub or corf, but they may
be as readily applied to waggons of other forms and descriptions, and used for
the conveyance of other minerals, or for other like uses.
Having thus described the nature of our said Invention, and in what manner
the same is to be performed, we claim,―
Firstly, be improvements in the construction of colliery waggons, tubs, or
corves, by making them with self-acting doors, as herein described.
And, secondly, the improvements in tilting or tipping such waggons, tubs,
or corves by means of a platform constructed as described, and the several
5 appliances described and shewn as belonging thereto, that is to say, the axis
working in bearings, the levers and weights, or any mero modification of or
mechanical equivalent for such appliances, as herein described.
Thirdly, the application of this Juvention to all descriptions of waggons,

page_text: tubs, or corves used for the conveyance of coal, coke, or minerals, or for other
similar uses, and requiring to be discharged by tipping, as herein more fully
set forth and specified.
In witness, whereof, we, the said Charles Henry Plevins and Henry
Rider, bave hereunto set our hands and seals, this Twenty-fourth day
of January, in the year of our Lord One thousand eight hundred and
sixty-throo
CHARLES HENRY PLEVINS. (L.S.).
HENRY RIDER.
(L.S.)