Improvements in Machinery for Manufacturing Blocks or Briquettes of Fuel or Materials for Smelting or Analogous Purposes.
Year: 1888

page_text: Date of Application, 5th Dec., 1888
Complete Specification Left, 3rd Sept., 1689-Accepted 12th Oct.,
1889
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Manufacturing Blocks or Briquettes
of Fuel or Materials for Smelting or Analogous Purposes.
We, JOHN ARTHUR YEADON, of 4 Albion Place; and ROBERT MIDDLETON, of
Sheepscar Foundry, both of Leeds in the county of York, Engineers, do hereby
declare the nature of this invention to be as follows:-
It relates to the details and general arrangement of a machine specially designed
for making up small quantities of materials, and for inaking blocks which may not
require a heavy pressure to be given to them. The capabilities of such a machine are
nevertheless unlimited, both as regards quantities or pressure.
The object of our invention is to produce, in a compact form, the best possible
design of machine with such simplicity of parts as will permit it to be made at a
minimum cost.
We carry out our object as follows:-A vertical revolving mould plate is arranged
with a ram and lever on each of its faces, for exerting a pressure on the briquettes
ou both their faces simultaneously. The fulcra of these pressing levers are arranged
on a lower level than the rams, and the other arms of those levers extend still further
down. The levers are duplicates one of the other as far as their leading proportions
go. In a central position below the revolving mould-plate is an horizontal main shaft
running across the machine at right-angles to the axis of the mould-plate. From a
crank or tumbler on this shaft a connecting rod,-fitted with yielding springs to
avoid breakages, extends vertically downwards and engages with the central crossbar
or shaft of a toggle-lover arrangement, the ends of whose outer levers are coupled to
the lower ends of the two duplicate pressing levers. A peculiarity of this arrange-
ment is that the central crossbar of the toggle is caused to work in
vertical line and
by this means, the two toggle-levers being of the same length,-symmetrical as well
as simultaneous movements are given to each of the pressing-rams by the revolution
of the main-shaft.
The main-shaft is further fitted with a double cam arrangement for imparting slow-
forward and quick-return motions to the lever &c. used for expelling the briquettes
Trom the mould plate. Another and similar arrangement is also fitted in connection
with the charging gear, this latter being further fitted with yielding springs in order
to avoid breakages.
The mould-table has preferably an even number of moulds and the two standing in
an horizontal (preferably on the centre line) position are those into which the
charging and expelling rams work. The double pressing rams work into the mould
standing on the vertical, centre line below the axis. The mould-table may be
traversed round by any convenient gear preferably we shall use our revolving spiral
cam motion now under provisional protection. This motion consists of a revolving
cam which engages with studs, or teeth, fixed at or near the circumference of the
mould-plate, the spiral groove running off into positions which stop the mould-plate
at the times required.
The dies on the double pressing rams may either be cupped or flat but we shall give
preference to our cupped dies.
On the main shaft will be mounted a large spur wheel which will be driven by a
pinion on a secondary shaft carrying a fly wheel to this latter we intend to apply our
shearing bolt and non-recoil catch.
The pug-mill will be arranged vertically on the top of the machine so as to
gravitate its contents forward towards the mould plate. If desired, for cooling
purposes, another smaller pug mill may be arranged to receive the materials from

page_text: the larger vertical heater. The charging ram works into the bottom of the vertical
heater, or into the cooling pan, and charges the material into the moulds with a
positive action, relieved however by the yielding spring arrangement, as before
mentioned, which gives way in the case of danger.
Suitable base plates and frames will render the whole self-contained.
WM. SNOWDON,
9, Beckett's Bank Chambers, Leeds, Yorks., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Machinery for Manufacturing Blocks or Briquettes
of Fuel or Materials for Smelting or Analogous Purposes.
We, JOHN ARTHUR YEADON, of 4, Albion Place, and ROBERT MIDDLETON, of
Sheepscar Foundry, both of Leeds, in the county of York, Engineers, 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:-
It relates to the details and general arrangement of a machine specially designed
for making up small quantities of materials, and for making blocks which may not
require a heavy pressure to be given to them. The capabilities of such a machine
are nevertheless unlimited, both as regards quantities or pressure.
The object of our invention is to produce, in a compact form, the best possible
design of machine with such simplicity of parts as will permit it to be made at a
minimum cost.
We carry out our objects as follows:-and in order to fully explain ourselves we
have annexed four sheets of drawings, the same letters refer to the same parts in all
the figures.
Fig. 1 is a side elevation. Fig. 2. is the same, in section. Fig. 3. is a front
elevation, and fig. 4. is a plan. A vertical revolving mould-plate A, sec fig. 2, is
arranged with rams B1 and B2 and levers C & C¹ on each of its faces, for exerting a
pressure on the briquettes on both their faces simultaneously. The fulera C² & C³ of
these pressing levers are arranged on a lower level than the rams, and the other arms
of these levers C & C extend still further down. The levers are duplicates one of
the other in their leading proportions. In a central position below the revolving
mould-plate is an horizontal main shaft, D, running across the machine at right
angles to the axis of the mould-plate. From a crank D¹ on this shaft a connecting
rod, E, fitted with yielding springs E¹ & E to avoid breakages,-extends vertically
downwards and engages with the central crossbar F2 of the toggle-levers F & F the
outer ends of which levers are coupled to the lower ends of the two duplicate
pressing levers C & C as shown. A peculiarity of this arrangement is that the
central crossbar F3 of the toggle is caused to work in a vertical line, between guide
bars G & G¹, hence-the two toggle-levers being of the same length-symmetrical
as well as simultaneous movements are given to each of the pressing rams B' & B⁹
by the revolution of the main-shaft. D.
The main-shaft is further fitted with a double cam arrangement-see fig. 1-for
imparting a slow forward motion, with quick-return, and rest; to the levers &c. used
for (1) expelling the briquettes from the mould-plate, and (2) actuating the charging
ram; this latter gear being further fitted with yielding springs in order to avoid
breakages, as set forth under the said Robert Middleton's Patent No. 5473 of 1884.
This arrangement, as shown, is as follows:-on the end of the shaft D is mounted a
disc H to which are attached double cams H & H one in advance of the other-the
arrow shows the direction of revolution. At the side of the disc H is suspended the
slotted link J, whose fulcrum is at J; A rod K couples it to a rocking lever L whose
fulcrum is at L'; This rocking shaft carries two other levers the first of which L² is

page_text: coupled by the rod M₁ to the expelling ram M sliding in the guide M2, whilst the
second L³ is coupled to the charging ram N working in the charging box N2 at the
foot of the vertical heater or pug-mill O-this latter connection is made through a
yielding spring sliding on a rod as shown. Reverting to the double cams H' & H'
it will be seen that the former (acting at the long leverage) produces the slow
advance of the rams, whilst the latter (acting at the short leverage) produces the
quick return. The cam H projects beyond the main body of the slotted-link and
impinges only against a projecting portion J³; this cam being in advance of the other
causes the quick return to take place earlier, and thus a pause occurs before the
next advance; as explained in our Patent Specification No. 3057 of 1886.
The mould-plate. A has (preferably) an even number of moulds, and the two
standing in an horizontal position (preferably on the centre line) are those into which
the charging and expelling-rams work. Here N is the thrust-receiving plate
opposite the charging ram. The double pressing-rains preferably work into the.
mould standing on the vertical centre line below the axis as shown. The guides B³
& B are made renewable after the manner shown. The mould-table may be
traversed round by any convenient gear: preferably we shall use our revolving spiral
cam motion. This motion is due to a revolving cam l' having spiral grooves which
engage with studs Q, fixed at or near the circumference of the mould-plate,-
fig. 3. The spiral grooves draw these studs to the centre of the cam where a rest is
given which stops the mould-plate at the times required the expelling of one stud
drawing in the next. The cam is worked by the wheels at P¹. The spiral cam is
fully explained in our Specification No. 4656 of 1888.
-see
The dies on the double pressing rams may either be cupped or flat, but we shall
give preference to our cupped dies, &c., as set out in our Specification No. 13064
of 1885.
On the main shaft is mounted a large spur wheel R which is driven by a pinion S¹
on a secondary shaft S carrying, where necessary, a fly wheel; to this latter we
intend to apply our shearing bolt and non-recoil catch, as set forth in our Specification
No. 1013 of 1887. S represents the driving pulley, and this may be a driving
fly-wheel S is its accompanying loose pulley.
The pugmill O is arranged vertically on the top of the machine so as to gravitate its
contents forward towards the mould-plate as set out in our Patent Specification
No. 3581 of 1886. If desired, for cooling-purposes, another smaller pug-mill may be
arranged to receive the materials from the larger vertical heater but we have not
shown it as it may be done without. The charging-ram N works into the charging-
box at the foot of the vertical heater (or at the foot of the cooling-pan) and charges
the material into the moulds with a positive action, relieved however by the yielding
spring arrangement, as before mentioned, which gives way in the case of danger.
On the base-plate T stand two pillars U₁ & U and from the top of the Vertical
Heater & pug-mill O extends a double armed bracket U; these support an arrange-
ment of overhead countershafting as shown in figs. 1 & 3; a belt from the main
shaft D drives the countershaft V, which in turn drives the shaft W and the
wheels W for working the pugmill shaft. The shaft V is arranged to carry the
elevator buckets (not shown) and room is left on the shafts for other pulleys-say,
for instance, for working our machine for proportionately mixing the pitch. Thus
everything is self contained on one base-plate.
An alternative mode of traversing the mould-plate is got by providing the
periphery of the plate with ratchet teeth and arranging an advancing and retiring
ratchet to work into them-the latter receiving its motion from a crank-plate on the
main shaft.A detent-likewise acting on the mould plate-similar to that described
and shown in our Specification No. 34 of 1887 must also be arranged to work in
conformity with the above, and this may be worked off a cam on the periphery of the
last mentioned crank-plate.
It will be understood that we make no claim, of course, for such portions of the
apparatus as are covered by the claims in the Patents & Specifications herinbefore
ennumerated.

page_text: 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 parts forming the machine for making Briquettes of fuel
& the like arranged constructed and operated substantially as described and shown.
(2) The general arrangement of toggle-levers with a guided central joint, in com-
bination with double pressing levers and rams working into a revolving mould-plate,
with the object and for the purpose set forth.
Dated this 2nd day of Sentember 1889.
WM. SNOWDON,
9, Beckett's Bank Chambers, Leeds, Yorks., Agent for the Applicants.