Improvements in Machines for Breaking Rock, Ore, and the like.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Machines for Breaking Rock, Ore, and the like.
I, EDWARD COMERFORD, of Laragh, Victoria Park, Wavertree, in the City of
Liverpool, Engineer, do hereby declare the nature of this invention to be as
follows:
―:
This invention has reference to machinery for breaking rock, ore, or the like,
of the type in which a rotating barrel is mounted on a vertical shaft, which
revolves, the barrel being disposed within a stationary outer hopper or case, and
the revolving and stationary parts being, respectively, coned or tapered inwards
and outwards from below.
According to this invention, in a machine of this type, the vertical shaft of
the machine is supported in bearings above and below, and centrally or practically
centrally with that is on the same axis as that of the outer casing or body;
whilst the revolving crushing barrel is mounted eccentrically on this shaft or
in the outer stationary case, the axis of which is parallel with that of the shaft.
The outer case, according to one construction, is coned, as stated, and has an
inner liner with a rubber or roughened surface; whilst the rotating barrel is
also coned as described, and has a ribbed or roughened surface, the material to
be broken being introduced from above, as usual, and discharged through the
space below, between the casing lining, and the revolving barrel, into a shoot.
The shaft is mounted below in a footstep, and above in a bearing supported
by arms from the hopper or casing; and on the shaft, between this upper bearing
and a shoulder on the shaft, there is an eccentric cylindrical or parallel portion,
the axis of which is parallel with the axis of the shaft. On this part the
revolving barrel is secured. The shaft may be rotated by any suitable gear or
means.
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1000
Improvements in Machines for Breaking Rock, Ore, and the like.
I, EDWARD COMERFORD, of Laragh, Victoria Park, Wavertree, in the City of
Liverpool, 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 has reference to machinery for breaking rock, ore, or the like,
of the type in which a rotating barrel is mounted on a vertical shaft, which
revolves, the barrel being disposed within a stationary outer hopper or case, and

page_text: the revolving and stationary parts being, respectively, coned or tapered inwards
and outwards from below.
According to this invention, in a machine of this type, the vertical shaft of
the machine is supported in bearings above and below, and centrally, or practically
centrally with that is on the same axis as the axis of the outer casing or body;
whilst a revolving crushing barrel is carried eccentrically on this shaft, and in
the outer stationary case of the body.
The invention is illustrated in the accompanying drawings, in which Figure 1
is a vertical section illustrating the machine, and Figure 2 is a plan in section
taken half at the line A. A and half at the line B B. Figure 1.
Referring now to the drawings, a is the vertical shaft; e is the crushing barrel
on this shaft; and is the outer case or body. The body is coned, and has an
inner lining with an internally ribbed or roughened surface; whilst the
rotating barrel e is also coned, as described, in the opposite direction, and has a
ribbed or roughened outer surface; and the material to be crushed is introduced
into the eccentric funnel shaped space between the roughened surfaces of i and e.
The shaft a is mounted by a footstep bearing & below, supported in the
frame of the machine; and in an upper bearing & above the crushing barrel e,
which is supported from the hopper of, and fastened to, the upper edge of the
body, by three radial arms, (one of which is seen and marked d) and a ring d²,
cast in one; fitting in between the fastening flange of the hopper 2, and the
case . This flange holds, by an inwardly projecting ledge-as shewn-the
liner in position in i, by resting on its upper edge.
The shaft a passes through the crushing barrel e, and carries it loosely upon it;
and at this part, it is provided with a cylindrical portion a¹, the axis of which
is eccentric to the bearing axis of the shaft a; and also its axis is disposed at
an inclination, as well as eccentric, to the axis of a, the degree of eccentricity
of e to the axis of a being greater at the lower end or hase, than at the upper
end. The crushing barrel e being itself circular in cross section, and its exterior
surface concentric with the axis of the hole or bore in which the shaft portion a¹
lies, the eccentricity of the outer surface of c, is, of course, due to the eccentricity
of the portion a¹. However, it is to be understood, that the construction by which
the eccentricity of the outer surface of e is obtained, is not restricted to that just
described and shewn.
On the lower part of the shaft a, there is a driving bevel gear wheel f, and
meshing with it is another bevel pinion f¹ on the shaft g, which is driven by belt
or other suitable gearing.
It will be seen from this description, that as regards this type of machine,
the shaft a is truly concentric with the general axis of the machine, and is
mounted in simple bearings below and above, and thereby the bearings, mounting
and mode of operating the shafts, such as are usually employed in this type of
machine, and their costliness, intricacy, and difficulty of repair and upkeep, are
obviated whilst, as regards effect, the result and action due to this eccentric, or
eccentric and inclined disposition of the crushing barrel, as described, is equivalent
to that of the other machines, both in its mode of action on the material, and
results.
With regard to the base c of the machine, this is generally of the usual type,
and the action is similar to that of the ordinary machine, namely, the rock, ore,
or other matter to be crushed is introduced above by way of the hopper 2 into
the larger eccentric annulus between the liner and the barrel e, and it is
discharged through the smaller eccentric annulus between the lower edges of
these two parts, into the discharge trough c¹ below.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what
I claim is: -
1. In a rock, ore, or analogous breaking machine, in which the outer conical

page_text: body has a vertical axis, a vertical operating shaft having its bearing axis con-
centric with the axis of the body or case; and an inner crushing barrel on the
said shaft, having its axis eccentric to the axis of the shaft and body; substantially
as herein set forth for the purposes specified.
2. In a rock, ore, or analogous breaking machine in which the outer conical
body has a vertical axis, a vertical operating shaft, having its bearing axis
concentric with the axis of the body or case; and an inner crushing barrel
consisting of a truncated cone on the said shaft, having its axis eccentric and
inclined to the axes of the shaft and body, in the manner and for the purposes
as set forth.
3. The rock, ore, or like breaking machine, having parts arranged and adapted
to operate particularly as set forth with reference to and shewn in the drawings.
Dated this 17th day of October 1899
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.