Improvements in Disintegrating and Pulverizing Machinery.
Year: 1894

page_text: Date of Application, 24th Sept., 1894-Accepted, 27th Oct., 1894
COMPLETE SPECIFICATION.
Improvements in Disintegrating and Pulverizing Machinery.
I SAMUEL THOMAS CROASDELL, of Windsor Lodge, Moresby, near Whitehaven,.
in the County of Cumberland, Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-
This invention for improvements in disintegrating and pulverising machinery
has for its object to provide a new form of mill for crushing friable materials such
as slag, limestone, coal, coke and the like and consists essentially in a horizontal
drum adapted to be rotated on its axis and having its periphery provided with
openings or slots and of hardened balls or weights within the drum.
In the accompanying sheet of illustrative drawings -Fig. 1 is an end elevation
of a disintegrating and pulverising machine constructed according to this invention
and Fig. 2 is a longitudinal vertical section of the same.
The periphery or outer casing A of the metal cylinder or drum is attached at
one end to a metal dise B rigidly secured to the driving shaft D carrying the
whole drum. The opposite end of the casing A is closed by an annular metal
plate E having a circular opening C at its centre for feeding the material to be
pulverized. Hard metal plates G are fixed inside the outer casing A of the drum
and are provided with slots H corresponding with similar slots in the outer casing
through which the pulverized material falls; the size of these slots regulates the
degree of fineness to which the material is crushed. The plates G are made in
sections the dotted lines F indicating the ends of the sections. The slots in the
outer casing are made large enough to admit of the coarsest grade of material
being produced that is desired. The crushing is effected by one two or more balls.
or masses of hard metal rolling inside the drum which is made to rotate by means
of suitable driving power actuating the shaft to which the disc carrying the drum
is attached. Moveable metal rings L are fixed on the insides of the ends of the
drum to take up the wear occasioned by the metal balls or masses striking against
the sides and can be readily replaced when worn.
The drum is enclosed in the usual form of metal hood or casing provided with
feed hopper and discharge shoot. The pulverized material falls to the bottom of
this casing and is driven into the discharge shoot by means of flat metal vanes F
projecting from the periphery of the grinding drum.
Having now 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
1. A disintegrating and pulverizing mill consisting essentially of a horizontal
drum adapted to be rotated on its axis and having its periphery provided with
openings or slots and of balls or weights within the drum.
2. A disintegrating and pulverizing mill substantially as described with reference
to the drawings.
Dated this 24th day of September 1894.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.