Improvements in Machinery for the Manufacture of Blocks or Briquettes of Fuel or Materials for Smelting or Analogous Purposes.
Year: 1889

page_text: Date of Application, 13th Apr., 1889
Complete Specification Left, 13th Jan., 1890-Accepted, 15th. Feb., 1890
PROVISIONAL SPECIFICATION.
Improvements in Machinery for the Manufacture of Blocks or
Briquettes of Fuel or Materials for Smelting or Analogous
Purposes.
.
We, JOHN ARTHUR YEADON, of 4 Albion Place, Leeds, Yorkshire, Engineer, and
ROBERT MIDDLETON, of Sheepscar Foundry, Leeds, Yorkshire, Engineer, do hereby
declare the nature of this invention to be as follows:-
-
This invention relates (1) to an improved mode of traversing and locking, step by
step, a revolving mould-plate: (2) to improvements in or connected with feeding and
regulating the material into the moulds, with-as far as possible-a positive feed:
(3) to improvements in making subdivided blocks of greater uniformity in their
respective sizes and weights; and in preventing damage to the apparatus: (4) to
improvements in interchanging or renewing moulds in a mould-plate: and (5) an
improved arrangement of machine.
:
The objects of our invention are:-(1) to provide mechanism for traversing a
revolving mould-plate at the greatest allowable speed, after previously shearing
through the material last fed into the mould at the feeding orifice; and for absolutely
holding and locking the said plate stationary at the most dangerous time, viz.-when
the pressing and other rams are entering the mould (2) to remove the liability of
any of the material rising back out of the feeding box, instead of being pushed
forward into the mould plate: (3) to produce blocks in certain varieties of sizes and
shapes by one mould plate, each such special size of block being respectively-
uniform both in dimensions and weight; thus allowing a single mould-plate to produce
a certain variety of standard blocks to meet the requirements of different markets, and
that with a regularity such as admits and encourages their sale at a price per block:
(4) to avoid the necessity of dismounting and changing a mould-plate, or keeping
additional machines, for making a greater variety of blocks: (5) to economise space
in putting down a plant by making the machine more self-contained and bringing
parts mutually dependent into closer connection.
We carry out our objects as follows:-(1) On the periphery of a circular mould-
plate we insert studs in suitable positions, and at equal distances apart, such
distances corresponding to the distances from centre to centre of the moulds.-Against
and across the periphery of this plate is fitted a sliding bar capable of moving in a
line parallel with the axis of this revolving plate. The surface breadth of this bar,
which is duly concaved to suit the radius of the plate, extends or spans the full
distance that remains between any of the adjacent studs-or between the rollers
mounted thereon.-A groove is cut, at a suitable slant, across the slide, from edge to
edge, in such a manner that whenever a stud on the mould-plate enters one end of
the said groove and an endwise movement is given to the said sliding bar, in the
direction suited, then the groove will travel the stud forward until it delivers it out
at the opposite side, the mould-plate having been correspondingly moved thereby.
If the movement of the slide be continued a short distance further then the mould-
plate is locked, the two studs adjacent to the slide locking it before and aft, and
at this period the pressing rams &c. may enter the mould-plate with absolute security.
After this, the movement of the slide is reversed, and it travels back until the groove
on the receiving side is opposite the rear stud which is to be next dealt with. At
this point a cam-like projection on the front or delivering side of the slide engages
with the stud last delivered and, raising it, brings the rear stud into the groove. The
movement here imparted to the mould-plate shears the material extending through
into the plate at the feeding orifice. The movement of the slide being once more
reversed, the second stad is passed forward, and through, on to the delivery side,

page_text: Hence, if a reciprocating motion,-brought about by, say, a double cam movement
capable of allowing a resting place,-be given to the slide, then the mould-plate will
be rotated in the desired intermittent manner with any desired rests at the necessary
times and places. Hence, also, at the resting places, the plate,-when the rams act,-
will be held and locked securely, thus allowing the plate no opportunity of over-
running its positions however fast it may be moved. It will be seen that this mode
of moving the plate gives great facilities for quietly shearing through the material
standing at the feeding orifice before-mentioned.
(2) At the foot of the pug mill where the material gathers, and from and out of
which the advancing charging ram pushes it forward into the mould plate, we
introduce, above the charging-ram chamber, one or more regulating slides or
blocks, such as will, whilst regulating the downward flow of material, tend to
counteract the tendency the material has to rise up and escape the action of the
charging-ram.
(3) In cases where it is desired to make several small blocks at a time, in place of
å larger one, it is usual to introduce dividing plates; but, unless each of the sub-
divisions are properly charged, the great pressure exerted by the pressing-rams will
be concentrated on the particular sub-division which contains the greatest depth or
thickness of material; thus a dividing plate may easily be burst outwards and into
the neighbouring, emptier subdivision. We therefore introduce,--and this, whether
we make one large block, or several subdivided ones, one or more relieving springs
behind each such plate as receives the thrust of the material, when it is fed into the
mould plate, opposite the feeding orifice. The relief thus afforded allows these plates,
whenever an extra full charge is given, first to give way before the charge, and
afterwards, when the ram has retired, to re-advance and return to the feed chamber
the extra material, and, as this takes place before the mould plate is moved, it follows
that the material returned is shorn off and left behind in the feeding chamber or
pugmill. Thus the material allowed to remain in the mould-plate, either for a
whole block, or for several subdivisions, respectively, is in each and every case
independently self-regulated.
(4) We set out each mould-plate with great exactness afterwards boring the
required holes at equal and concentric distances apart. Into each hole we fit a truly
turned moulding-cylinder having centrally, or uniformly, arranged therein the mould
or die (one or more) of the shapes required. We further arrange a flange (sunk,
in the mould plate) at that end of the moulding-cylinder on which the influence
of the charging or expelling rams might operate in displacing them.
Thus any
change of moulds may readily be made by introducing different moulding-cylinders,
containing different moulds, into one and the same specially prepared mould-plate.
The central portion of each such mould with a cylindrical exterior may be built
up, where thought desirable,-in several pieces, bound together by an outer ring
or by the circular hole in the plate itself."
(5) On the top of the side frames of our machine, or on the top of the cross
girders, alongside the Vertical Heater, we mount a blower or fan to supply air to
cool the material as it flows from the Heater; and we drive it from the first
motion shaft of the machine, either direct or thro' any necessary intermediate self
contained gearing.
Dated this Twelfth day of April 1889.

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery for the Manufacture of Blocks or
Briquettes of Fuel or Materials for Smelting or: Analogous
Purposes.
We, JOHN ARTHUR YEADON, of 4 Albion Place, Leeds, Yorkshire, Engineer; and.
ROBERT MIDDLETON, of Sheepscar Foundry, Leeds, Yorkshire, Engineer, 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, (1.) to improvements in or connected with feeding and
regulating the material into the moulds, with-as far as possible-a positive feed ;-
(2) to improvements in making subdivided blocks of greater uniformity in their
respective sizes and weights; and in preventing damage to the apparatus; (3.) to
improvements in changing or renewing moulds in a mould-plate.
The objects of our invention are:-(1) to remove the liability of any of the material
rising back out of the feeding box, instead of being pushed forward into the mould
plate; (2.) to produce blocks in certain varieties of sizes and shapes by one mould
plate, each such special size of block being-respectively-uniform both in dimensions
and weight thus allowing a single mould-plate to produce a certain variety of
standard blocks to meet the requirements of different markets, and that with a
regularity such as admits and encourages their sale at a price per block; (3.) to avoid
the necessity of dismounting and changing a mould-plate, or keeping additional
machines, for making a greater variety of blocks.
We carry out our objects as follows:--Fig. 1 is a side sectional elevation showing
the pugmill foot, with the tapering false bottom or passage to the charging ram
chamber; the charging ram and mould plate; and the yielding thrust-receiving
plates. Fig. 2 is a sectional plan corresponding to fig. 1. Fig. 3 is a cross section
of the tapering passage. Fig. 4 is a front elevation of the principal portions of the
yielding thrust-receiving mechanism. Fig. 44 shows another way of arranging the
tail piece for the springs when the subdivisions are arranged side by side, as in the
lower disc shown in fig. 5. Fig. 5 is a front elevation of half a mould plåte
prepared to receive a series of moulds arranged. inside discs. Fig. 6 is a corre
sponding plan of the same. The same letters refer to the: saine parts, or. their
equivalents, in all the figures.
1. At the foot of the vertical pug-mill, heater, or mixer A, A, where the material
gathers and from and out of which the advancing charging ram B'pushes it forward
into the mould-plate C, we introduce, above the charging-ram chamber-a block or
false bottom, D, D, having a downward tapering opening d, d; or we otherwise
arrange a passage similarly tapering, such as will, whilst regulating: the downward
flow of material, tend to counteract the tendency the material has to rise up and escape
from the action of the charging-ram.
(2.) In cases where it is desired to make several small blocks at a time, in place of
a larger one, it is usual to introduce dividing plates, as at a, b, c, d, fig. 5, but unless
each of the subdivisions are properly charged, the great pressure afterwards exerted
by the pressing-rams will be concentrated on the particular subdivision which contains
the greatest depth or thickness of material; thus a dividing plate may easily be burst
We therefore introduce-
outwards and into the neighbouring emptier subdivision.
and this, whether we make one large block, or several subdivided ones-one or more
relieving springs behind each such plate as receives the thrust of the material when it
is fed into the mould-plate opposite the feeding orifice. The relief thus afforded
allows these plates, or any one or more of them, whenever an extra full charge is
given, first to give way before the charge, and afterwards, when the ram has retired,
to re-advance and return to the feed chamber the extra material, and, as this takes
place before the mould-plate is moved, it follows that the material returned is shorn
off and left behind in the feeding chamber or pugmill. Thus the material allowed to
remain in the mould-plate, either for a whole block, or for several subdivisions,

page_text: respectively, is in each and every case independently self-regulated and no damage
is done when the charge is travelled round and compressed under the pressing
rams. Here, in figs. 1, 2 & 4, the block is subdivided into 4 smaller ones.
Certain ribs E, E, E, E, project backwards from the main frame and allow a stud F
to be fixed thereon. This stud in like manner supports a tail piece G, G, against
which the tail end of the springs H, H &c. press. This tail piece also acts as the
guide for the spindles J, J, &c. of the thrust-receiving plates K, K. These plates
slide in the main frame L L which is fixed to the framing of the machine. Nuts at J
regulate the distance to which the springs are allowed to push the plates, K, K,
forward.
(3.) We set out each mould-plate with great exactness afterwards boring the
required holes at equal, and concentric, distances apart. Into each hole we fit a truly
turned moulding-cylinder or disc having centrally, or uniformly arranged therein,
the mould or die (one or more) of the shapes required. We further arrange a flange
(sunk in the mould-plate) at that end of the moulding-cylinders on which the
influence of the charging or expelling rams might operate in displacing them. Thus
any change of moulds may easily be made by introducing different moulding
cylinders, containing different moulds, into one and the same specially prepared
mould-plate. The central portion of each such mould with a cylindrical exterior may
be built up, where thought desirable, in several pieces bound together by an outer
ring, or by the circular hole in the mould plate itself when inserted therein. In
figs. 5, & 6, C, C, is the mould table mounted on a central axis M. The equidistant
and concentrically laid out holes are shown at N, N, &c. (8 is the example shown):
0, 0, are the mould discs having in one example four subdivided moulds a, b, c, & d,
and in another three e, f & g. Each disc has a projecting flange P for which a
corresponding recess is provided in the mould plate at the side most suitable. After
each disc is inserted and twisted into true line the set screw Q is tightened up and all
is thus secured. To remove the discs the set screw is twisted back and the discs are
then pushed out, leaving the plate ready for another set. Each set of discs must of
course have the same set of moulds arranged therein. When different sizes of blocks
are produced at one time two or more varieties must be arranged as subdivisions-
see e, f and g in fig. 5, where three sizes are arranged as subdivisions.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. The combination of a tapering block or false bottom, or otherwise a tapering
passage, between the foot of the vertical png-mill, heater, or mixer, and the charging
chamber, together with yielding thrust-receiving plates, each such plate being pressed
forward by its own independent spring or springs, without being influenced by the
action of any of the other plates, as and for the purpose set forth.
2. The mode of arranging and making a revolving mould-plate-and also its discs-
so that its moulds or dies may be changed with safety celerity and accuracy, as and
for the purpose set forth.
Dated this 11th day of January 1890.
WM.
SNOWDON,
9, Beckett's Bank Chambers, Leeds, Yorkshire, Agent for the Applicants.