Improvements in Ore-crushers.
Year: 1890

page_text: Date of Application, 27th Dec., 1890
Complete Specification Left, 29th May, 1891-Accepted, 26th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in Ore-crushers.
1, FRANÇOIS MARCELIN CASTELNAU Mining Engineer, of 175 Rue St. Honoré
Paris, do hereby declare the nature of this invention to be as follows:-
The question of ore-crushing is an important one. Two main points have to be
taken into consideration when effecting the mechanical preparation of ore, viz. :—
First, when it is desired to crush ore, the crushing operation of the rich portions
which are generally softer than the accompanying gangue should not be carried
too far.
Second, when a poor class of ore is to be crushed a large bulk thereof should be
dealt with at little cost.
I attain these objects by means of the ore-crusher to be herein described.
Fig. 1, is an elevation of my improved crusher, partly in section.
Fig. 2, is a vertical section thereof taken through the axis of the ring carrier 3.
Fig. 3 is a plan of Fig. 1.
Fig. 4 is a side view of the jaw-carrier 6 shown in Fig. 1.
Fig. 5 is a section of Fig. 4 on the line A, B.
Fig.
6 shows an installation of the crusher with its accessory devices..
1 is the main shaft of the crusher, upon which is secured a ring carrier.2. Upon
the carrier 2 is a ring 3 which is fixed by means of bolts 29. or in any other suitable
manner. The fit of the ring 3 upon the carrier 2 may be cylindrical, polygonal or
conical. In the periphery of the ring 3 are formed transverse grooves into which
are firmly secured strips a, a made of alternate pieces of Wolfram steel, or of any
other suitable metal. The main shaft I together with the parts which it carries, is
rotated in the direction of the arrow, see Fig. 1, by means of a driving pulley 5.
The number of revolutions per minute will have to vary according to the hardness
and size of the ore or material to be treated and also according to the degree of
fineness to be obtained. 6 is a jaw-carrier capable of oscillating on a fixed axis or
pivot 7. Through the lower end of the jaw-carrier 6 passes a rod 19 to which are
connected four bolts 10, 10, 11, 11. The ends of the latter are provided with steel
springs 12, 12, 13, 13, to which variable degrees of tension may be imparted by
means of nuts 30, 30, according to the condition of the ore to be treated. The jaw-
carrier 6 has secured to it a crushing-jaw 8, into the face of which are likewise
fastened alternate strips of steel and soft iron 9, 9, or any other suitable metal.
The crushing-jaw 8 may be secured by means of wedges 22, 23, as shown in Fig. 1
or by any other suitable means.
From the foregoing, it will be readily understood that the distance apart between
the crushing-jaw 8 and the rotary ring 3 can be regulated to a nicety; the two
parts may even be brought close enough together and yet not touch each other.
The said distance apart will determine the size to which the ore will be crushed.
The tension imparted to the springs 12, 12, 13, 13 will require to be proportionate
to the hardness of the ore to be crushed.
The ore to be crushed is supplied by a feeding device hereinafter described, into
the space b, c, d, Fig. 1. and by the rotation of the ring 3 it is obliged to pass in
between the said ring and the crushing-jaw 8. While so passing, the orc is crushed
and is crushed to the desired size without pulverising any parts of the said ore to
an impalpable state. It is well known that ore should not be crushed to an
impalpable state, otherwise the ore in that state will float' on the surface of the
water and will be carried along thus giving rise to considerable waste.
The apparatus is furthermore composed of an automatic feeding device operated
from the main shaft 1 by means of.a belt passing around the pulley 14 and around

page_text: a pulley 15 keyed on the feeder shaft 31, Figs. 2 & 3. The shaft 31, carries a
cam 32, Figs. 1 & 3 which imparts a to and fro motion to a bar 33 rigidly connected
to a shaking trough 17. A spring 21 tends to pull the said trough constantly in a
direction opposite to that in which it is operated by the cam 32 so that when the
trough is solicited one way by the cam it is solicited another way alternately by
the spring. The trough thus receives an intermittent shaking motion by which the
ore supplied from a stationary hopper 18 is conveyed to the crushing devices proper.
The ore-crusher is set or secured upon any desired foundation.
Fig. 6 shows the installation of an orc-crusher together with its accessory
devices.
After the ore has been subjected to the action of the crusher, it can be classed or
sorted; the crushed ore is led by a chute 27 into a separating cylinder 24 of any
known kind. The particles crushed to a given size are received into a chamber 28,
whilst the remainder of the ore is conducted to a trough 26 from which it is led
back into the feeding hopper 18 of the crusher by means of an elevator 25 of any
known kind.
The said installation is particularly applicable in such cases where owing to a too
quick feeding action, the space b, c, d Fig. 1 should become choked up with
uncrushed ore, whereby the springs 12, 12, 13, 13 would be bound to yield too much
and allow portions of the ore to pass uncrushed; on the other hand it has for its
purpose to prevent the crushed ore from containing larger particles of orc, owing to
any accidental passage of pieces of iron, nuts or other objectionable material through
the crusher. The uncrushed portions of the ore will thus be conveyed back to the
crusher, and any objectionable material can be removed from the trough by hand.
The elevator 25 can be fitted with a suitable clutch or other gear for stopping its
motion when required.
Dated this 24th day of December 1890.
F. M. CASTELNAU,
By L. W., per F. B.
COMPLETE SPECIFICATION.
Improvements in Ore-crushers.
I, FRANÇOIS MARCELIN CASTELNAU, Mining Engineer, of 175 Rue St. Honoré,
Paris, 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 :-
The question of ore-crushing is an important one. Two main points have to be
taken into consideration when effecting the mechanical preparation of ore, viz. :-
First, when it is desired to crush ore, the crushing operations of the rich portions
which are generally softer than the accompanying gangue should not be carried
too far.
Second, when a poor class of ore is to be crushed, a large bulk thereof should be
dealt with at little cost.
1 attain these objects by means of the ore crusher to be herein described reference
being had to the drawings accompanying the Provisional Specification.
Fig. 1 is an elevation of my improved crusher partly in section.
Fig. 2. is a vertical section thereof taken through the axis of the ring-carrier 3.
Fig. 3. is a plan of Figure 1.
Fig. 4. is a side view of the jaw carrier 6 shown in Fig. 1.
Fig. 5. is a section of Fig. 4 on the line A, B.
Fig. 6. shows an installation of the crusher with its accessory devices.
I is the main shaft of the crusher, upon which is secured a ring carrier 2. Upon
the carrier 2 is a ring 3 which is fixed by means of bolts 29 or in any other suitable
manner. The fit of the ring 3 upon the carrier 2 may be cylindrical, polygonal or

page_text: conical. In the periphery of the ring 3 are formed transverse grooves into which
are firmly secured strips a, a made of alternate pieces of Wolfram steel and soft
iron. The main shaft 1 together with the parts which it carries, is rotated in the
direction of the arrow see Fig. 1., by means of a driving pulley 5. The number of
revolutions per minute will have to vary according to the hardness and size of the ore
or material to be treated and also according to the degree of fineness to be obtained.
6 is a jaw-carrier capable of oscillating on a fixed axis or pivot 7. Through the lower
end of the jaw-carrier 6 passes a rod 19 to which are connected four bolts 10, 10,
11, 11.
The ends of the latter are provided with steel springs 12, 12, 13, 13, to
which variable degrees of tension may be imparted by means of nuts 30, 30, according
to the condition of the ore to be treated. The jaw-carrier 6, has secured to it a
crushing jaw 8, into the face of which are likewise fastened alternate strips of steel
and soft iron 9, 9 or any other suitable metal. The crushing jaw 8 may be secured
by means of wedges 22, 23, as shown in Fig. 1 or by any other suitable means.
From the foregoing it will be readily understood that the distance apart between
the crushing jaw 8 and the rotary ring 3 can be regulated to a nicety; the two
parts may be even brought close enough together and yet not touch each other.
The said distance apart will determine the size to which the ore will be crushed.
The tension imparted to the springs 12, 12, 13, 13 will require to be proportionate
to the hardness of the ore to be crushed.
The ore to be crushed is supplied by a feeding device hereinafter described, into
the space, c, d Fig. 1, and by the rotation of the ring 3 it is obliged to pass in
between the said ring and the crushing jaw 8. While so passing the ore is crushed
and is crushed to the desired size without pulverising any parts of the said ore to
an impalpable state.
It is well known that ore should not be crushed to an impalpable state, otherwise
the ore in that state will float on the surface of the water and will be carried along
thus giving rise to considerable waste.
The apparatus is furthermore composed of an automatic feeding device operated
from the main shaft 1 by means of a belt passing around a pulley 14 and around a
pulley 15 keyed on the feeder shaft 31, Figs. 2 & 3. The shaft 31 carries a cam 32,
Figs. 1 & 3, which imparts a to and fro motion to a bar rigidly connected to a
shaking trough 17. A spring 21 tends to pull the said trough constantly in a
direction opposite to that in which it is operated by the cam 32, so that when the
trough is solicited one way by the cam, it is solicited another way alternately by
the spring. The trough thus receives an intermittent shaking motion by which the
ore supplied from a stationary hopper 18 is conveyed to the crushing devices
proper. The ore-crusher is set or secured upon any desired foundation.
Fig. 6 shows the installation of an ore-crusher together with its accessory
devices.
After the ore has been subjected to the action of the crusher, it can be classed or
sorted; the crushed ore is led by a chute 27 into a separating cylinder 24 of any
known kind. The particles crushed to a given size are received into a chamber 28,
whilst the remainder of the ore is conducted to a trough 26 from which it is led
back into the feeding hopper 18 of the crusher by means of an elevator 25 of any
known kind.
The said installation is particularly applicable in such cases where owing to a
too quick feeding action, the space b, c, d, Fig. 1. should become choked up with
uncrushed ore, whereby the springs 12, 12, 13, 13, would be bound to yield too
much and allow portions of the ore to pass uncrushed; on the other hand, it has
for its purpose to prevent the crushed ore from containing larger particles of ore,
owing to any accidental passage of pieces of iron, nuts or other objectionable
material through the crusher. The uncrushed portions of the ore will thus be
conveyed back to the crusher, and any objectionable material can be removed from
the trough by hand. The elevator 25 can be fitted with a suitable clutch or other
gear for stopping its motion, when required.

page_text: 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 I do not
claim broadly the use of a rotary crushing surface in conjunction with a crushing
jaw, nor do I claim broadly the use of a spring in conjunction with a crushing jaw,
but what I do claim is :-
1. In an ore crusher a crushing ring 3 & a crushing-jaw 8, the said ring being
secured to a carrier 2, and the said jaw being secured to a pivotted arm 6, held in
frictional contact with, the ring 3 by a yielding device composed of a cross-shaft 19,
bolts 10, 10, 11, 11, springs 12, 12, 13, 13, and regulating nuts 30, 30, as and for
the purpose set forth:
.
2. The combination of parts constituting the improved ore-crusher, constructed,
. arranged and operating, substantially as described and shown in Figures 1 to 5 of
the accompanying drawings.
:
3. In an ore-crusher a feeding device for the ore to be crushed, composed of a
hopper 18, a movable trough 17, à cam 32, on a shaft 31 operated from the main
shaft, 1, and a spring 21, co-operating with the cam for the purpose of imparting a
shaking motion to the said trough, as described and shown in Figs. 1, 2 & 3 of
..the accompanying drawings...
4. An installation for crushing ore, comprising the following main instru-
mentalities in combination with each other, viž: :-
a) A separating cylinder 24,
b) A chamber 28 for receiving the particles of ore which have been crushed to
the desired fineness.
c) A trough 26 for receiving the particles of ore which have not been crushed
to the desired fineness.
d) An elevator 25 for conveying the insufficiently crushed particles back again
into the feeding device of the ore-crusher.
A feeding device as set forth in Claim 3.
f) An ore-crusher device having for its main parts the main features set
forth in Claim 1.
Dated this 29th day of May 1891.
F. M. CASTELNAU,
By L. W., per F. B.