Improvements in Apparatus for Breaking or Crushing Stone, Ores, and other Hard Substances.
Year: 1894

page_text: Date of Application, 12th July, 1894
Complete Specification Left, 14th Jan., 1895-Accepted, 16th Feb., 1895
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PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Breaking or Crushing Stone, Ores,
and other Hard Substances.
I, COURTENAY WILLIAM THOMPSON, of 5 Fair Street, Tooley Street, in the
County of Surrey, Mining Engineer, do hereby declare the nature of my invention
to be as follows:-
My invention relates to apparatus for breaking, or crushing, stone, ores, and
other hard substances, the said apparatus being of the class wherein a crushing
head is made to gyrate, or revolve, and vibrate within a surrounding taper space
enclosed by a casing the stone, or the like, being crushed in the space between the
said head and casing, both of which may be covered by removable operating faces,
the said space tapering downwards. The object of my invention is to so arrange
the apparatus that it is very efficient in operation, and so that the parts by
which the apparatus is operated are above the head and casing, the said parts being
thus easy of access, and free from grit, and not restricted to a confined space; the
space beneath the head and casing is free for the exit of the crushed material, and
the head and casing, being low down, the stone; or the like, to be crushed, has to
be elevated but slightly to be fed into the apparatus, and the difference between
the levels of feed and discharge is small.
The crushing head is secured to the lower end of the crushing head shaft, the
upper end of which is connected, excentrically, to a shaft driven by any suitable
motor. The crushing head shaft, at a part thereof towards its lower end and
between the crushing head and the upper end, is provided with a part constituting
a fulcrum mounted in a corresponding bearing, or socket, in a bracket which may
bridge the casing. The crushing head may be conveniently secured to the lower
end of the crushing head shaft by making the end of the said shaft taper and the
hole through the crushing head correspondingly taper and forcing the head tightly
onto the shaft by means of a cotter driven into a transverse hole made through the
projecting end of the shaft. The connection of the upper end of the crushing head
shaft with the driving shaft may be effected by providing the upper end of the
said crushing head shaft with a bush, or collar, secured between guides in the
lower end of the driving shaft so that by moving the said bush, or collar, laterally
in the said guides and securing it in its adjusted position the degree of excentricity
of the attachment and consequently the amplitude of the gyratory movement of the
crusher head shaft and consequently of the crusher head can be adjusted as required.
The crusher head can also be adjusted vertically relatively to the casing so that the
This can
crushing and discharge space between the two can be regulated.
conveniently be effected by carrying the upper end of the driving shaft in a bearing
which is capable of being raised and lowered, by means of screws, for example, the
socket, or bearing, for the fulcrum on the crushing head shaft being also capable
of sliding vertically in the bracket which supports it, so that the driving shaft, and
with it the crushing head shaft, and the crushing head, can be adjusted vertically
as desired.
Dated the 12th day of July 1894
1
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, Agents.

page_text: Improvements in Apparatus for Breaking or Crushing Stone, Ores,
and other Hard Substances.
I COURTENAY WILLIAM THOMPSON of 5 Fair Street, Tooley Street in the
County of Surrey, Mining Engineer, do hereby declare the nature of this invention
aud in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement.:.
My invention relates to apparatus for breaking, or crushing, stone, ores, and
other hard substances; the said apparatus being of the class, wherein a crushing
head is made to gyrate, or revolve, and vibrate, within a surrounding taper space
enclosed by a casing, the stone or the like being crushed in the space between the
said head and casing (both of which may be covered by removeable operating faces)
the said space tapering downwards. The object of my invention is to arrange the
apparatus so that it is very efficient in operation, and so that the parts by which
the apparatus is operated are above the crushing head and casing, the said parts
being thus easy of access, and free from grit, and not restricted to a confined space;
the space beneath the crushing head, and casing, being free for the exit of the
crushed material, and the crushing head and casing being low down, the stone, or
the like, to be crushed, has to be elevated but slightly to be fed into the apparatus,
and the difference between the levels of feed and discharge is small.
I will describe my invention with reference to the accompanying drawing;
premising however that I do not limit myself to the precise details illustrated.
Figure 1 is a part elevation and part vertical section of the apparatus and
Figure 2 is a vertical section, at right angles to Figure I shewing the connection
between the crusher head shaft and the shaft by which it is driven.
The crushing head A is secured to the lower end of the crushing head shaft B,
the upper end of which is connected excentrically to a shaft C, driven by any
suitable motor. The crashing head shaft B, at a part thereof towards its lower
end, and between the crushing head A, and the upper end is provided with a part
constituting a fulcrum shewn as consisting of a spherical part b, mounted in a
bearing d, or socket, in a bracket D which may bridge the casing, or opposed
crushing surface E. The connection of the crushing head to the crushing head
shaft should be such that the movements of the axis of the crushing head are
similar to the movements of the axis of the crushing head shaft. The crushing
head; A for example may be conveniently secured to the lower end of the crushing
head shaft B, by making the end of the said shaft taper and the hole through
the crushing head correspondingly taper, and forcing the head tightly onto the shaft
by means of a cottar 2, driven into a transverse hole made through the projecting
end of the shaft B. The connection of the upper end of the crushing head shaft
with the driving shaft C, may be effected by providing the upper end of the said
crushing head shaft B, with a bush, or collar secured between guides c in the
lower end of the driving shaft C, so that by moving the said bush or collar 64
laterally in the said guides c and securing it in its adjusted position, the degree of
excentricity of the attachment between the shafts B, and C, and consequently the
amplitude of the gyratory movement of the crusher head shaft B, and consequently
of the crusher head A, can be adjusted as required.
The means shewn for effecting the adjustment consists of liners k, at each side of
the bush, or collar, those at the respective sides being of a size, or number, in
accordance with the desired position of the bush, or collar, and shaft, and these are
all kept in place by a strap, with a projection, pressed on the outermost liner by
means of a cottar m driven through holes in pins n which project on either sides of
the guides c and over which the strap is passed but 1 do not limit myself to this
mode of fastening the parts in position.

page_text: The crusher head A can also be adjusted vertically relatively to the casing E so
that the crushing and discharge space between the two can be regulated. This can
conveniently be effected by carrying the upper end of the driving shaft C, in a
bearing F in a cross piece G, which is capable of being raised and lowered in the
uprights H for example by means of screws i passing through plain holes in the
lugs h on the standards H and through a screwed hole at each end 9 of the cross
piece G, the socket or bearing d for the fulcrum on the crushing head shaft B
being also capable of sliding vertically in the bracket D which supports it so that
the driving shaft C, and with it the crushing head shaft B and the crushing head A
can be adjusted vertically as desired.
It will be seen that the bush or collar 6 is provided with flanges for retaining it
in position vertically in the guides.c and that the shaft B is retained in position
vertically by the flange at its upper end. c² is a collar secured to the shaft C, to
retain it in position in the bearing F. J. J' are wheels by which the rotation of
the shaft C, and consequently the gyratory motion of the crusher head shaft B,
and crusher head A, are obtained from any suitable motor. The wheel J may be
mounted on the shaft C, by a groove and feather (c) connection for instance so as
to allow of the aforesaid vertical adjustment.
I have shewn a spherical bearing at the fulcrum b as this is of course the best
form, but any other bearing which will allow of the necessary movement may
be used.
The framing may be of any suitable description and be supported either from
below as shewn or from above.
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. In apparatus of the kind herein before described a crusher head mounted upon
the lower end of a shaft driven from above and having between the said head and
the point at which driving is effected a fulcrum-bearing on which the shaft gyrates
substantially as hereinbefore described.
2. In apparatus of the kind herein before described a crusher head mounted upon
the lower end of a shaft provided with a fulcrum-bearing above the said head and
connected above this fulcrum to a driving shaft by means of a connection laterally
adjustable to regulate the amplitude of gyration of the crusher head substantially
as herein before described.
3. In apparatus of the kind hereinbefore described a crusher head mounted upon
the lower end of a shaft driven from above and provided with a fulcrum-bearing
between the said head and the point at which driving is effected, the bearing of the
said fulcrum and the shaft by which driving is effected being vertically adjustable,
so as to regulate the crushing and discharging space between the said crusher head
and the casing or opposed crushing surface substantially as hereinbefore described.
4. In apparatus of the kind herein before described a crusher head mounted upon
the lower end of a shaft provided with a fulcrum-bearing above the said head, and
connected above this fulcrum to a driving shaft by means of a connection laterally
adjustable to regulate the amplitude of gyration of the crusher head the hearing
of the said fulcrum and the shaft by which driving is effected being vertically
adjustable so as to regulate the crushing and discharging space between the said
crusher head and the casing or opposed crushing surface substantially as herein-
before described.
Dated this 14th day of January 1895: