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

page_text: Date of Application, 27th Mar.. 1888
Complete Specification Left. 27th Dec., 1888
Complete Specification Accepted, 29th Jan., 1889
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, and ROBERT MIDDLETON, of
Sheepscar Foundry, both of Leeds, in the County of York, and both engineers, do
hereby declare the nature of this invention to be as follows :-
It relates to an improved mode of traversing a circular mould-plate whose moulds
have to be brought one by one correctly in line with one or more dies or rams or the
like. Such a mould-plate may be either vertical or horizontal.
Hitherto it has been dangerous, if not impossible, to run a machine having a heavy
monld-plate with any degree of rapidity on account of the inertia and momentum of
such a mass.
At starting-especially where the material operated on has to be cut
through by the first movement--a heavy strain is requisite, and then, after this, there
is a tendency for the plate to over-run itself. Even when prevented from so doing
by the catches the rebounds therefrom have caused the moulds to come to rest out of
line with the pressing rams &c. The consequences of these irregularities being very
serious the speed of the machines is limited and a decreased output follows.
The object of our invention is to accelerate the output-or, otherwise, to lessen the
chances of breakages in the machinery-by providing a traversing motion which shall
hold the mould-table at all times under complete control whilst permitting it to be
run at a quicker speed, or with a more steady and regular movement, or with all these
advantages.
On the periphery of the mould-plate we arrange a series of what we may term
"studs." These project radially and are placed in positions which correspond to the
centres of the moulds in the table.-They are necessarily equidistant.
One or more Spiral Cams revolving at the requisite speed are arranged to gear with
these studs and they cause the mould-table to traverse round and rest at the required
places

page_text: The peculiarities of the cam or cams are these;-They cause the table (1) to
commence its movement as slowly as may be desirable and then gradually accelerate
its speed (say, after the manner of a falling body) up to its half movement; after
which (2) its speed is gradually decreased (in a like manner) until the table is left
standing in its required position; and (3) whilst thus resting one or more studs are
securely held stationary in the cam or cams.
The cams may be as it were single or double ones with the zero-or resting
position arranged at the centre, or, if preferred, at the ends. Our cam is necessarily
thinner at the waist so that it may adapt itself to the periphery of the mould-plate.
We prefer to make them in two or more parts for the purposes of adjustment or
renewal.
These Spiral Cams may be revolved by any suitable gear, and they may, if found
convenient, be run at speeds which vary at different parts of their revolution-for
instance the speed of the revolution of the cam may be decreased when the table is
being held at rest.
The "Studs" may be pins, with runners on them shaped as may best suit the cams,
or they may be formed by any suitable projections.
The improvements here described form a valuable adjunct to our machine in which
in a revolving vertical mould plate we press from both sides simultaneously giving
either a flat or rounded corner both cases requiring great accuracy in the stopping
arrangements of the mould-table. This as described in our patents No. 13,064 of 1885
and 13,067 of 1885.
Dated this Twenty sixth day of March 1800

page_text: CUBILETE SPECIFICATION.
Improvements in Machinery for the Manufacture of Blocks or
Briquettes of Fuel or Materials for Smelting or Analogous
Purposes.
We, JonN ARTHUR YEADON, of 4 Albion Place, and ROBERT MIDDLETON, of
Sheepscar Foundry, both of Leeds in the county of York and both 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 an improved mode of traversing-round a circular mould-plate whose
moulds have to be brought one by one correctly in line with one or more dies, or
rams or the like.
Hitherto it has been dangerous, if not impossible, to run a machine having a heavy
mould-plate with any degree of rapidity on account of the inertia and momentum of
such a mass. At each start, especially when the newly charged material has to be
cut thro' by the first movement, a heavy strain is requisite and then, after this,
there is a tendency for the plate to over run itself. Even when prevented from so
doing by the catches the rebounds therefrom have caused the moulds to come to
rest out of line with the pressing rams &c. The consequences of these irregularities
being very serious the speed, and consequent output, of the machine is limited.
The object of our invention is to accelerate the speed and output, or otherwise to
lessen the chances of breakages in the machinery,-by providing a traversing motion
which shall hold the mould-table at all times under complete control whilst permitting
it to be run at a quicker speed, or with a more steady and regular movement, or with
all these advantages.
We carry out our object as follows:--On the periphery of the mould-table, or plate,
we arrange a series of what we may term "studs"-These project radially, and are
placed in positions which correspond to the centres of the moulds in the table, and are
necessarily equidistant.
One or more cams, or grooved pullies, revolving at the requisite speed, are arranged
to gear with these studs and they cause the mould-table to traverss round and rest at
the required places.
The peculiarity of the cam, or cams, preferably, are these ;-They cause the table,
or plate, (1) to commence its movement as slowly as may be desirable, and then
gradually accelerate its speed (say after the manner of a falling body) up to its half
movement; after which (2) its speed is gradually reduced (in a like manner) until
the table is left standing in its required position; and (3) whilst thus standing one or
more studs are securely held stationary in the can or cams.
The cams may be as it were single or double ones, with the zero, or resting position,
arranged at the centre, or the ends. Our Cain is preferably shaped so that it adapts
itself to the periphery of the mould-plate. They may be made in two or more parts for
the purposes of adjustment or renewal.
The cam or cams may be revolved by any suitable gear, and they may, if found
advisable be run at different speeds at different parts of their revolution; for
instance, the speed of the cam may be decreased when the table is being held
at rest.
The "studs" may be pins, with runners on them shaped as may best suit the
grooves in the cams; or any suitable projecting parts may be used as "studs."

page_text: The improvements here described form a valuable adjunct to our machine in which
in a revolving vertical mould-plate we press from both sides simultaneously giving
either a flat or rounded corner,-both cases requiring great accuracy in the stopping
arrangements of the mould table. This as described in our patents 13,064. of 1885,
and 13,067 of 1885.
In case the angle of the recessed path in the cam is too steep a larger diameter of cam
must be used so as to ease the working slope.
The more moulds in the plate the better as a smaller angular movement is then
required, and the cam deals better with such.
În certain cases cams may be revolved twice whilst one movement of the mould-
plate is made; but this has the disadvantage of lessening the length of the "resting
positions, especially if one can only be used and that revolving at a continuous speed.
Cases may occur where a pull-over-gear may work side by side with a cam,―the
latter acting partly or mainly as a safety or locking check.
Where two cams are used, in different positions on the mould plate, they need not
necessarily be duplicates, for instance the "studs" may "rest" as the centre of one,
and at the ends of another, the positions being arranged accordingly: Or one cam
may be used for certain parts of the work and the other for the balance.
The "Studs "Imay be arranged on the flat face of the mould-plate, as near to the edge
as convenient; the cam or pulley being then cylindrical in outline to suit the altered
conditions.
When the "Studs" are on the periphery of the mould-plate the circumferential face
may be concaved slightly to suit the rotundity of the cam.
On the annexed drawing fig. 1 shows the general arrangement of the cam traversing
apparatus when the "resting" point is dealt with at the centre of a cam working
against the circumferential face of a Vertical Mould plate with eight moulds. Fig. 2
is a corresponding view of the same cam turned a quarter centre backward. Fig. 3
is a similar arrangement with the "resting" points dealt with at the extremities of a
cam; and fig. 4 is a corresponding view of this latter cam turned a quarter centre
forward. These cams are both designed to "rest" during about one half of their
revolution in order to give time for the dies and rams to do their work & get clear
away from the mould plate; one revolution of the cam producing a movement froin
centre to centre of the moulds. The arrows show the direction of motion of the
examples drawn. An arrangement with a cylindrical cam or pulley engaging with
studs" on the flat face of the mould-plate, and against which flat face the cam runs,
is not shown as it is a modification of a simple nature which will be easily understood
after what has been explained and drawn.
A. A are the studs on the mould plate B whose axis is at C. D is the cam or
grooved pulley revolving on an axis E E at right angles to that of the mould plate;
whilst F F are the recessed paths in the cam for engaging the studs A.
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 use of one or more cams or grooved pullies arranged to gear with studs, or
their equivalents, on or near the periphery of a vertical revolving mould plate, whether
such cams do the whole of the work or act mainly or partly as a safety or locking
check; with the objects and for the purposes set forth.
2. The arrangements of mould-plates, studs, and cams, substantially as described.
herein with the objects and for the purposes set forth.
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