Improved Apparatus for Crushing, Grinding, or Pulverizing Clay and other Materials or Substances.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improved Apparatus for Crushing, Grinding, or Pulverizing Clay
and other Materials or Substances.
We, LEWIS BENSON KENNEDY, Brick Manufacturer, and ALFRED BURNESS
GREIG, Civil Engineer, both of 39 Lombard Street London E.C. 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:-
The improved apparatus according to our invention is devised primarily, in
connection with brick making, for crushing or decrepitating clay which has been.
first dried, or at all events from which the moisture has, to a large extent been
removed. Our improved apparatus is however applicable advantageously for many
other cognate uses, such for instance amongst others, as the comminution of the
mineral and other ingredients employed in making artificial or block fuel.
In accordance with our invention reference also being had to the accompanying
sheet of drawings in which
b
Figure 1 is a side elevational view of our improved apparatus. Figure 2 an end
elevation. Figure 3 plan; and Figure 4 a transverse section taken on line
Figure 3.
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The material or substance to be treated is brought up or conveyed by any
suitable means to the hopper A of the casing B enclosing an Archimedean screw
worm C serving to convey the material or substance to be treated, to the shoot D,
and thence through the aperture (Figure 3) to the crushing device enclosed in
casing E. The crushing device consists (Figure 3) of two main separate parts
driven by two pulleys I, G working in opposite directions; the separate shafts f
and y upon which they are mounted being each provided at the end, as shewn with
a fly wheel F, G. The crusher device is made up and consists of the following
essential parts that is to say :-To the inner end of the shaft is adapted the bossed
disc provided with beater arms, rods or rails i fixed by suitable means to the
disc, and rotating in the direction shewn by the arrows (see more particularly
Figure 4). To the inner end of the shaft g is adapted the bossed disc device, k,
funnel shaped, as shewn to allow of the unimpeded rotation of the shaft, and also
provided with beaters similarly as in the case of the disc but rotating in a
direction opposite to that of said disc h. One of the essential elements which
obtains as a feature distinctive of our invention consists in the employment of a
stop bar or fence H preferably of steel introduced and fixed centrally as shewn
Figures 2; 3 & 4. The function of which is as follows:-That is to say; on the
material to be treated entering the crushing device said bar prevents the material
from being carried round with the crusher and serves to direct the uncrushed
material to, and enforce its passage through the other or bottom half of the
comminuting beaters, rods or rails, i, (Figure 4). After which the material; now,
in a comminuted state passes in the direction of the arrows, into a pit or receptacle
from which it is conveyed by an elevator to mechanically worked screens for the
removal and separation of any extraneous substances.
It will be readily understood that the distance apart of the beaters, arms, or rods
may be regulated by any of the usual means of adjustment to suit the requirements
of the particular substance or substances to be treated in the crusher.
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.
First The improved combination machine or apparatus for crushing, grinding
or pulverising clay, and other materials or substances, as herein described and
shown in the accompanying drawings.

page_text: Second-In machines employed for crushing, grinding or pulverising purposes
the discs h, k, beaters (ii) & stop bar or fence H forming essential features in the
crusher acting in the manner and for the purposes substantially as herein described
and shown in the accompanying sheet of drawings.
Dated this 31st day of August 1892.
JAMES
STEVENSON,
20, High Holborn, London, W.C., Agent for Applicants.