Improvements in or Applicable to Disintegrators or Pulverising Machines.
Year: 1897

page_text: Date of Application, 31st Aug., 1897-Accepted, 9th Oct., 1897
COMPLETE SPECIFICATION.
Improvements in or Applicable to Disintegrators or Pulverising
Machines.
I, WILLIAM LUCKLEY, of Chiltern Works, Dunstable, Bedfordshire, 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 to improvements in or applicable to disintegrators or
pulverising machines, and has special reference to the parts of such machines
which are subject to the most wear, namely, the screen through which the pul-
verized material passes, and the beaters by which the material is struck or pounded
within the disintegrator casing; the object of the improvements being to attain the
advantages hereinafter referred to.
As hitherto constructed, the screen has been made of a frame-work of cast iron
having the steel bars which form the screen or mesh cast in and made entire with
the frame. This construction is disadvantageous, in that, should any of the screen
bars get broken, the whole screen is consequently rendered useless and requires
to be entirely replaced by a new screen, and in that, should it be desired to alter the
mesh either by increasing or by decreasing it, another entire screen with bars
cast in at a greater or less distance apart, as required, has had to be employed, so
that a change in the mesh can only be obtained by means of a new screen.
Again, as hitherto constructed, the pulverizing beaters have been bolted into a
cast iron block secured to the beater-shaft. This construction is disadvantageous
in that the beaters, in continually presenting the same face to the materials under
treatment, wear away on that face and ultimately become so worn as to become
useless for their intended purpose.
.
The object of the present improvements is to remedy these disadvantages, and,
so far as they relate to the screen, is so to construct the screen that should any of
the screen-bars get broken or become unduly worn, it or they can be readily
replaced by a new screen-bar or bars, and that the mesh of the screen may be
readily altered either by removing the screen-bars from or by applying others to
the screen-frame, as may be required, so that, to produce a given range of meshes,
fewer screens will be required than are at present required; and, so far as the
improvements relate to the beaters their object is to enable the beaters, when their
striking faces on one side have become sufficiently worn, to be reversed on their
shaft so as to present new faces to the materials to be treated, whereby the life
of the beaters will be prolonged.
On the accompanying drawings:-
Fig. 1, represents a sectional elevation of a screen-frame and set of beaters con-
structed and adapted in accordance with the present improvements;
Fig. 2, represents a sectional plan thereof; and
Fig. 3, represents a section of the screen-frame on the line A-B, Fig. 1.
To the end aforesaid, I construct the screen by building the screen-frame of
wrought iron in lower and upper parts a, a', which are adapted to be secured

page_text: together at their ends by screws a², or other convenient means so as to locate the
screen bars b, between them in a securely fixed but readily removable manner. For
this purpose, the lower frame part a, is formed, along its upper face, at equidistant
intervals, with recesses or notches a³, adapted to serve as seatings to the ends of
the bars b, and for which purpose the recesses may be made of the full depth of
the bars b, as represented at the left side of Fig. 1, or may be made of a reduced
depth as represented at the right side of such Fig., in which latter event, the ends
of the bars are correspondingly shaped so as to form shoulders 61, (vide Fig. 3,)
at each end, which abut against the frame-part a. The bars b, are represented as
made of triangular section, but the bars may be made of any other suitable section,
as may the recesses a³, be made of any corresponding or suitable shape. If the
screen-frame is of a narrow width, two end-sets of frame-parts a, a¹³, may, as
represented, suffice to support the bars b, but, if the width of the frame necessi-
tates, an intermediate frame-part or parts a, may also be used to support the bars b.
The frame parts a, are located in relation to each other by cross bars at, formed
with projections a5, adapted to enter holes a, made in the ends of the parts a,
and by one or more intermediate stay bars a', according to the length of the
screen.
c, represents the improved beaters, which I mount, directly on their carrying
shaft c', (without the intervention of the usual cast iron block hereinbefore referred
to) in a reversible manner. To this end, the shaft c', is made with a beater-
carrying-part of angular section, as represented, and the beaters are each made
with a central boss ², of corresponding section, and with opposite arms, as repre-
sented, and they are spaced apart on the shaft c', by means of distance-washers 3.
The beaters may, however, be secured to the shaft by keys, pins or screws or by
any other convenient or suitable means, and they may be kept from lateral move-
ment on the shaft by collars c, and a pin 5 or by ferrules, discs, nuts or by any
other suitable or convenient means.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what I
claim is:
In disintegrators or pulverising machines;
1. Constructing the screen with a frame of wrought iron in lower and upper
parts and with separable screen bars, the frame parts being adapted to be secured
together and to locate the screen bars between them in a securely fixed but readily
removable manner, substantially as and for the purpose herein before described.
2. Constructing the beaters and applying them to their carrying-shaft in a
separable and reversible manner, substantially as and for the purpose herein before
described.
Datad this 97th day of twouat 1807
DAY, DAVIES & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicant.