Improvements in Machinery for Preparing Clay in the Manufacture of Bricks.
Year: 1892

page_text: Date of Application, 10th Oct., 1892
Complete Specification Left, 10th Aug., 1893-Accepted, 10th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Preparing Clay in the Manufacture
of Bricks.
I, JOHN RYDER of Openshaw, near Manchester, Brickmaker, do hereby declare
the nature of my said invention to be as follows:-
These improvements relate to an invention for which I obtained Letters Patent
No. 3958 dated the 8th October 1878 and relate to means for elevating the runners
or rollers mounted in the revolving pan to allow of the removal of the limestone
and other hard substances left in the pan after the operation of crushing.
In accordance with my invention the axle ends of each runner or roller are
supported in blocks or slides fitting loosely into vertical openings or recesses formed
in the usual framework.
Above said framework is a forked lever pivoted at its forked extremities to the
framework on each side of the roller and which passes beneath overhanging portions
of the blocks or slides aforesaid which are formed as knife edges. The free end
of the lever on being raised causes the forked extremities to come in contact with
the overbanging portions of the slides and raise or elevate the blocks or slides out
of the recesses which carry with them the roller.
In this manner the rollers can be raised some considerable height to enable the
lime-stone to be readily removed from underneath. To retain the rollers in the
elevated position I provide a trigger or catch, hinged at one end to the framework
and free to take into a space formed on the lever and so hold the lever in its raised
position.
A separate forked lever is provided for each runner or roller.
JOHN G. WILSON,
Agent.
COMPLETE SPECIFICATION.
Improvements in Machinery for Preparing Clay in the Manufacture
of Bricks.
I, JOHN RYDER of Openshaw, near Manchester, Brickmaker, do hereby
declare the nature of my said invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
These improvements relate to an invention for which I obtained Letters Patent
No. 3958 dated the 8th, October 1878, and relate to means for elevating the runners
or rollers mounted in the revolving pan to allow of the removal of the limestone
or other hard substances left in the pan after the operation of crushing the clay
which accumulates during the crushing operation.
And in order that my invention shall be the more clearly understood and carried
into practical effect I have hereunto annexed a sheet of drawings and will now
proceed to describe the same with the assistance of the various figures and letters
of reference marked thereon.
Fig. 1 is a sectional elevation of a machine for grinding or crushing clay similar
to that described in my former Specification and
Fig. 2 is a similar view to Fig. 1 taken, more or less, at right angles.
In accordance with my invention A, A are the runners or rollers, B, B their
axles and C the pan.
The ends of the axles B, B, take into and are supported in
ID 7

page_text: the slide blocks D, D, fitting loosely into the vertical openings or recesses E, E
formed in the usual frame F of the machine.
Above the frame F of each roller or runner is a forked lever G (seen separately
and on enlarged scale in Figs. 3 and 4) which lever is pivoted or hinged at its
forked extremities H to the brackets F' secured or mounted on the frame top F
The forked extremities H of said lever are, by preference, of the shape and cross
section seen more clearly in Figs. 1 and 3, hence the horizontal part G1 of the
✓ section is capable of coming beneath the overhanging portions 1, I which are
formed on the side blocks D, D. It will be observed that each set of the over-
hanging portions I, I point in the same direction to allow of the lever G being
readily slided underneath. It will now be seen that in elevating the forked
lever G, which is readily done by means of a spike or handle J placed in the taper
socket K, the slide blocks D, D, roller axles B, B and roller A will be raised by
the said lever coming in contact with the overhanging portions I, I and hence a
sufficient clearness will be made between said roller and the pan to permit of the
removal of the lime stone or other hard substances that have accumulated beneath
as aforesaid.
The overhanging portions of the block D, D are either formed with a Vor
knife edge to cause the block when raised to ride more perfectly on the lever G or,
as is preferred, made square and provided with an adjusting screw L, capable of
being screwed through the overhanging portions I, and so increase or diminish the
space between the bearing point and the lever G and cause them to meet early or
later as desired. These screws may also serve for elevating the rollers or adjusting
their elevation.
To facilitate the lifting of the lever G I provide it with an extension M, carrying
a balance weight N, and to retain the lever and roller in their elevated positions
I employ by preference, a catch or locking lever O pivoted to the frame F at P,
extending upwards and formed at its upper extremity as shewn in Fig. 2. This
upper extremity is designed to take into the recesses Q, formed in the lever G,
and so support the lever in its raised position. To lower the lever G this catch
is pulled forward and to prevent the catch falling down and to keep it in a position
handy for use the boss R of its lower extremity is formed with a projection S,
which bears against the frame top in supporting the catch. To retain the lever G
in its lowered position the catch has a tooth or projection T capable of engaging
with a stud or pin U on the lever G when said lever is lowered and the catch is
drawn back, the space at V being sufficient to allow of the catch to release
the pin.
The parts G of the lever G are inclined as shewn to allow for the radial move-
ment of the said lever and the vertical movement of the blocks D, D.
The overhanging portions II of the blocks D may bear against the lever G
and may be provided with anti-friction rollers.
To facilitate the adjustment of the slide blocks D when worn and so keep the
rollers away clear of the floor of the pan, I provide packing strips W and an
adjusting screw X screwing through the parts Y, Y.
Instead of the lever G being fulcrumed at its extreme ends, the same may be
fulcrumed at a point along its length, say at Z, the slide blocks D, D being then
caused to ride upon the extremity of the lever which is beyond the fulcrum.
this modification the balance weight N is on the handle side of the fulcrum.
In
It will now be obvious that when the limestone or other hard substance has
accumulated beneath the rollers the said rollers may be readily raised and elevated
clear of the pan thus allowing of the said substance being removed. In practice.
if allowed to go on accumulating the limestone has an exceedingly injurious effect
upon the rollers, and upon the holes in the pan floor, sometimes breaking them and
causing the limestone to be crushed and forced into the chamber below to mix with
the prepared clay. It must be understood that the rollers are capable of rising
and falling as described in my former Specification, the space between the over-
hanging portions or adjusting screws being sufficient to allow for this.

page_text: Having thus particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1st. In machinery for preparing clay and the like particularly that described in
the Specification filed by me on the 8th, day of October 1878 and hereinbefore
referred to, the use and employment of slide blocks D, D, with over-hanging
portions I, I, or their equivalents, forked lever G and spike J mounted and
operating substantially as and for the purposes hereinbefore described and
illustrated on the accompanying drawing.
2nd. For locking the lever G in its raised or lowered positions the use and
employment of the catch lever O or its equivalent substantially as hereinbefore
described and illustrated on the accompanying drawing.
Dated this 9th day of August 1893.
JOHN G. WILSON & Co.,
55, Market Street, Manchester, Agents for the Applicant.