Improvements in Machinery or Apparatus for Grinding or Pulverizing Substances.
Year: 1887

page_text: Date of Application, 30th Nov., 1887
Complete Specification Left, 30th Aug., 1888
Complete Specification Accepted, 5th Oct., 1888
.PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Grinding or
Pulverizing Substances.
1,"ANDREW LAMBERTON of Sunnyside Engine Works, Coatbridge in the County
of Lanark, Engineer, do hereby declare the nature of this Invention to be as
follows:
This Invention which relates to improvements in machinery or apparatus for grinding
or pulverizing substances either in a dry, or wet state has for its object to effect these
operations by means of balls, cylinders, cones or like bodies which are rotated or driven
in a horizontal or inclined circular path, constituting the grinding or pulverizing
chamber, by the frictional contact of a driver whose weight upon the balls cylinders
or cones increases the grinding or pulverizing effect.
The apparatus constituting the Invention consists of a casing or trough. the bottom
of which is or may be inclined upwards toward's the circumference and has preferably
fitted into it a ring of metal or a series of segments constituting a ring in whose
upper surface the circular path or grinding chamber is formed, the balls, cylinders or
cones, of which any desired number may be employed, resting on the said
surface.
From the inner side of the said path the bottom of the chamber or trough is
inclined upwards towards the centre so as to constitute a cone above which there
extends a hollow shaft actuating the driver and through whose interior the material to
be ground or pulverized is fed from a hopper at the top of the machine. The shaft is
rotated by bevel, spur or other suitable gearing and at its lower end it has a palm or
flange to which there is bolted a metal ring or series of segments resting on the upper
surfaces of the balls cylinders or cones and constituting the upper part of the grinding
or pulverizing apparatus the said part and with it the balls, cylinders or cones being
rotated by the bevel, spur or other gearing before mentioned. The material to be
ground or pulverized passes in between the balls, cylinders or cones and their bearing
surfaces above and below and by the rotation of the balls, cylinders or cones and of
their driving apparatus it is reduced to any desired degree of fineness and

page_text: thereafter passes or is forced or exhausted out of the grinding or pulverizing chamber
through a discharge opening or branch to which a fan, blower or exhauster may be
connected if desired.
The degree of fineness to which the material is reduced is to some extent
regulated by the body of unground mateaial standing in the hollow shaft or in the
feeding duct leading therefrom to the circular path of the balls the said body
exerting a forcing action of the material through the machine according to its
weight.
Instead of feeding through the centre of the driving shaft as before set forth, the
material may be fed into the machine in any other desired manner.
1007

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Grinding or
Pulverizing Substances.
1, ANDREW LAMBERTON of Sunnyside Engine Works, Coatbridge, in the County
of Lanark, 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 :—
My Invention which relates to improvements in machinery or apparatus for grinding
or pulverizing substances either in a dry or wet state has for its object to effect these
operations by means of balls or spheres which are rotated or driven in a horizontal or
inclined circular path constituting the grinding or pulverizing chamber by the frictional
contact of a driver whose weight upon the balls increases the grinding or pulverizing
effect.
The figure on the accompanying drawing is a vertical section of the apparatus which
consists of a circular casing A into the bottom of which there is fitted a bed B of
metal which may be in one piece or composed of a series of segments constituting a
circle. In the upper surface of the bed B a circular path Cis formed, the said part
constituting the grinding chamber the balls X of which any desired number may be
employed resting on the said surface.
From the inner side of the bed B the bottom of the chamber A inclines upwards
towards the centre so as to constitute a cone immediately above which there is situated
a hollow shaft D, the latter having a square, octagonal or other angularly shaped
lower end D fitting loosely in a similarly shaped opening in the driver H, the
materials to be ground or pulverized being fed either in a wet or dry state through the
hollow shaft from a hopper F. at the top of the machine.
The driver which rests upon the balls X is composed of two parts namely a
renewable face plate E which has a circular hollow concave or flat path bearing on the
balls and a backing block H, the said face plate being secured by bolts G to the backing
block between the lower part of which and also between the inner edge of the face
plate E and the conical bottom of the casing A, an annular space I for the down flow
of the materials to be ground is left.
The shaft D, which passes up through a sleeve J on the top of the casing A has a
bevel wheel K secured upon it the said wheel being geared with a pinion L, fixed on a
horizontal shaft M. also carried in bearings on the top of the casing and on whose
outer end fast and loose pulleys N, N¹ for a driving belt are situated.
The shaft D and its appurtenances are so connected as to provide for oscillation in
the driver H, caused by inequalities in feeding or in the size of the materials being
ground.
The hopper F is centred on a bracket O secured to the top of the casing A and it is
furnished with an inclined spout P, the rate of feeding being regulated faster or slower
by lowering or raising the delivery end of the spout for which purpose a hand wheel a
and screw b are provided as shown.

page_text: The material to be ground or pulverized passes in between the balls X and the
bearing surfaces of the bed B and the disc or face plate E and by the rotation of the
balls it is reduced to any desired degree of fineness and thereafter passos out of
the grinding or pulverizing chamber A through a discharge opening or branch R, or
instead of such branch the body of the casing or a part of it may consist of a screen
which will retain the material until it is fine enough to pass through the meshes.
With either arrangement to force or blow the ground or pulverized material out of
the casing A a series of fan blades S are fitted around the driver H as indicated
or a fan or exhauster may be applied to the discharge opening or branch R.
Instead of balls or spheres being used a series of cylinders or cones rotating
loosely in a suitable path formed between the driver H and the bed B may be
substituted as their equivalents the said path constituting the grinding chamber.
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 :-
1. The general arrangement and combination of parts constituting the improved
pulverizing or grinding machine substantially as hereinbefore described with reference
to the annexed drawing.
2. In a machine for grinding or pulverizing substances the combination of a casing
having a circular path in the bottom thereof a series of balls situated in said path, a
driver resting loosely on the series of balls and actuated by a hollow shaft through
which and through an annular space between the driver and the conical shaped bottom
of the casing the material to be operated on is fed between the grinding surfaces as
described.
Linth of At 1000
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow,
Agents.