IMPROVEMENTS IN CONCENTRATING AND VANNING APPARATUS
Year: 1883

page_text: LETTERS PATENT to Philip Middleton Justice of 55 & 56 Chancery Lane
"
in the County of Middlesex. Fellow of the Institute of Patent Agents for an
Invention of "IMPROVEMENTS IN CONCENTRATING AND VANNING APPARATUS
communicated to him from abroad by The Frue Vanning Machine Company
of Detroit, Michigan, United States of America
PROVISIONAL SPECIFICATION left by the said Philip Middleton Justice
at the Office of the Commissioners of Patents on the 4th October 1883.
"
PHILIP MIDDLETON JUSTICE of 55 & 56 Chancery Lane in the County of
Middlesex Fellow of the Institute of Patent Agents " IMPROVEMENTS IN
CONCENTRATING AND VANNING APPARATUS a communication to me from abroad
by The Frue Vanning Machine Company of Detroit, Michigan United States of
America
This invention relates to that class of apparatus employed in treating crushed
or fine minerals or ores in which the lighter particles are washed away and carried
off in the tailings while the metallic particles are collected or concentrated for
subsequent amalgamation or other suitable treatment
The invention consists in the arrangement and combination of parts hereinafter
described by which the materials may be rapidly and effectively treated From a
suitable stationery main frame, with one end slightly higher than the other, rise
a series of toggles, which carry the shaking frame, and its various connected parts-
Said toggles rest in a series of, slotted steps, bolted to the main frame, and capable
of lateral adjustment by which means the perpendicularity of the toggles, may be
varied and the heighth of either side of the endless belt or apron hereafter described,
can be adjusted
The shaking frame carries an endless belt or apron, preferably formed of rubber
with raised edges or flanges and this travels around drums placed at either end of
the frame, being intermediately supported above the frame by a series of small
cross rollers Beneath the frame, the belt depressed by a pulley and passes into
a concentrating tank suitably filled with water after which it passes up and over a
tightener pulley bevelled at its ends or made shorter than the width of the belt in
thin C 27

page_text: order that the flanges of the same may not be injured, and from this point the belt
passes to and around the lower end drum of the shaking frame.
The depresser and tightening pulleys or rollers are carried by bearings, supported
from the shaking frame by suitably braced stirrup castings which in their turn are
capable of adjustment by means of hand wheels. By this means the pulleys or
rollers may be squared and any tendency to irregular cross travel of the endless belt
or apron may be counteracted. Lateral motion is imparted to the shaking frame
through a series of flat steel spring connections attached thereto and operated by
a crank shaft carried in suitable bearings supported by the main frame The
forward motion of the belt is secured by the revolution of the top end drum or
roller of the shaking frame and this is caused to revolve by means of a helical
spring piece, attached to its shaft and operated upon by an arm attached to a gear
wheel driven in its turn from the crank shaft by means of a cone pulley in connec-
tion with a second shaft and worm. The spring piece through which motion is
imparted to the top drum or roller is sufficiently elastic to allow of said roller
vibrating with the shaking frame at right angles to the direction of motion of
revolution. The worm shaft is carried in bearings which form part of the cast
iron casing surrounding the gear wheel and is supported thereby The weight of
the worm shaft is sufficient to keep the belt from the cone pulley on the crank
shaft to the grooved pulley on the worm shaft taut enough for driving the
.latter and as the said shaft is hung with its bearings loosely on the shaft of the
gear wheel it can be, raised or lowered without getting the worm out of gear
This enables the grooved pulley to be adjusted by means of a hand set screw
at any desired point on the worm shaft, and consequently causes the belt to travel
at the desired place upon the cone pulley and in this manner any specified speed of
forward motion may be imparted to the endless belt or apron without change
of lateral vibration By means of a cam or set screw bearing on the casting
carrying the worm shaft, all strain may be taken off the small belt and the uphill
travel of the apron instantly stopped
To keep the shaking frame always in the same relative position in regard to the
main frame, two or more long bolts or rods, are attached through suitable lugs to
the lower end of the shaking frame The upper ends of said bolts or rods are
suitably connected to the centre cross brace of the main frame To give large
adjusting power of the angle of travel of the end drums or rollers in regard to the
shaking frame and consequently to control an even travel of the endless belt or
apron, the shafts of said drums or rollers are carried in bearings governed by set
screws. This power of adjustment being in addition to that described with
reference to the depresser and tightening pulleys The material is fed onto the
travelling belt through a hopper or sand box attached to the shaking frame, the
base or delivery portion of said box being divided by a series of buttons or short
horizontal pieces which divide the material and cause it to be evenly distributed
across the surface of the endless belt or apron From this delivery point, the
material next passes beneath a series of small jets of water by the action of which
the sand and lighter particles are carried down the belt against its line of travel
and are delivered into suitable sluices or tailing boxes while the heavier particles
of metal or metalliferous substances settle upon the belt and are carried thereby
into the concentrating or collecting box or boxes beneath The inclination of the
entire apparatus may be varied in a simple manner, by means of wedges inserted
between the main frame and the supporting legs morticed into the mud sills upon
which it rests

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Philip Middleton Justice in the Patent Office on the 24th March
1884.
PHILIP MIDDLETON JUSTICE of 55 & 56 Chancery Lane in the County of
Middlesex Fellow of the Institute of Patent Agents "IMPROVEMENTS IN
CONCENTRATING AND VANNING APPARATUS" a communication to me from abroad
by The Frue Vanning Machine Company of Detroit, Michigan United States of
America
This invention relates to that class of apparatus employed in treating crushed or
fine minerals or ores in which the lighter particles are washed away and carried off
in the tailings while the metallic particles are collected or concentrated for
subsequent amalgamation or other suitable treatment The invention consists in
the arrangement and combination of parts hereinafter described, by which the
materials may be rapidly and effectively treated. To clearly explain the invention
and enable others to practice the same, reference is made to the accompanying
drawings which form part of this specification and in which Figure 1 represents a
side elevation of the improved concentrator Figure 2 is a vertical longitudinal
section of the same Figure 3 is an enlarged view of the principal operating
devices Figure 4 is an enlarged detail illustrating the yielding supports which
sustain the apron frame and the fastenings of said supports Figure 5 is an enlarged
view of the underside of the lower support of the yielding supports Figure 6 is a
front elevation of one of the apron drums Figures 7 and 8 are views of the cam to
stop the feed of the apron, and Figure 9 is a detail shewing the stop mechanism
enlarged. From a suitable stationary main frame A B with one end slightly higher
than the other, rise a series of toggles or elastic supporting straps E which carry
the shaking frame and its various connected parts. Said toggles rest in a series of
slotted steps bolted to the main frame and capable of lateral adjustment by which
means the perpendicularity of the toggles may be varied, and the heighth of either
side of the endless belt or apron hereafter described can be adjusted. It has been
found by experience that despite the greatest care and uniformity in making
machines of this class, results will differ in machines of the same construction. In
some, the ore will bank or collect at one side of the belt against the flange, and in
others it will bank in another place without any apparent cause as the belts all run-
smoothly and easily and are to all appearances nicely adjusted By changing to a
limited degree the inclination of the supporting straps or toggles E the belt is
affected in such manner as to remedy this fault and to distribute the ore evenly
over its surface This adjustment is accomplished by means of a rocking nut which
enables the operator to change the position of the faces of the supports of straps E
The said supports are constructed as follows. Bolts 6 passing vertically through.
the timbers A hold beneath said timbers blocks e having their upper surfaces where
they bear against the timbers rounded as shown at e² and having longitudinal-
slots e¹ to receive the bolts and sockets to receive the lower ends of the straps E
The lower surface of each block has a longitudinal depression e' in which rests a
washer i having a curvilinear face against which rests the head of the bolt when in
position. A blow or a series of blows upon the block e will cause it to change
position by rocking on the curved face e against the timber A and the curved face
of washer i against the head of the bolt so as to vary the position of strap E as to
a vertical line. I do not confine myself to this particular construction or means for
adjusting these straps as there are many ways in which it can be accomplished
I consider however the way here shown as being a good one as it secures the strips
firmly and yet allows their adjustment when necessary The shaking frame D
carries an endless belt or apron.Ċ preferably formed of rubber with raised edges or:

page_text: from
flanges c, and this travels around drums J J¹ placed at either end of the frame
being intermediately supported above the frame by a series of small cross rollers d d.
Beneath the frame the belt is depressed by a pulley and passes into a concentrating
tank suitably filled with water after which it may pass up and over or under a
tightener pulley bevelled at its ends or made shorter than the width of the belt in
order that the flanges of the same may not be injured, and from this point the belt
would then pass to and around the lower end drum Ji of the shaking frame D The
depresser and tightening pulleys or rollers are: carried by bearings supported f
the shaking frame by suitably braced stirrup castings which in their turn are
capable of adjustment by means of hand wheels By this means the pulleys or
rollers may be squared and any tendency to irregular cross travel of the endless
belt or apron may be counteracted. Lateral motion is imparted to the shaking
frame by means of a shaft F carrying the driving pulley G The end of the shaft F
is provided with a short crank f to which is connected a pitman H extending to
and secured to frame D Power applied to pulley G causes the pitman H to move
the frame D with its belt c forward and backward swinging upon supporting
straps E thus giving to said belt the side shake The forward motion of the belt is
secured by the revolution of the top end drum or roller J of the shaking frame
The drum J has a gudgeon j to this gudgeon is rigidly secured a strong spring I
having a spiral shape as shown and adapted to yield laterally Journalled in the
frame is a shaft K carrying upon one end a large gear wheel L. To the other end of
this shaft is secured a crank k the end of which engages the free end of spiral spring I
The gear wheel L meshes with a worm gear M below. This worm gear is upon
one end of a shaft N the other end of which carries a pulley O from which a belt o
extends to a cone pulley P upon the shaft F above described. When power is
applied to shaft F it is transmitted as before described to cause the side shake of
the belt and at the same time through pulleys P and O, shaft N and worm M it is
transmitted to gear L and shaft K This shaft revolving causes its crank k to
revolve the drum J by means of the spiral spring I, which though rigid for this
pressure yields laterally and allows the drum J to move sidewise with the frame D
and the belt. It is sometimes desirable to stop the uphill travel of the belt
immediately, to do this I provide a circular casing or rim the bub g of which fits
loosely as a sleeve upon shaft K or upon its bearing This casing surrounds the
gear L except at the bottom where it extends downwardly and forms a casing as
shown at Q for the worm gear M and has a projection q' supporting boxes r r for
bearings for shaft N. Under certain circumstances it is highly desirable to
instantly stop the movement of the belt O and in order to accomplish this, the
pulley must be suddenly relieved from the effects of the driving belt o which is
accomplished as follows. The pulley O shaft N boxes r r worm gear M and
casing QQ being all supported from one point-namely the hub g of the casing
surrounding shaft K-they have a common rotary movement around said shaft,
the preponderance of the weight, obviously on the side toward the pulley O on
shaft N tending to depress pulley O and keep the belt o stretched so as to rotate
pulley O
By moving all the elements just previously recited so as to elevate the large
pulley O the effect of the belt o ceases From the rear of the portion Q of the
casing projects a stud t and moving on a spindle 5 conveniently located on the
machine is a cam S rotating in a plane at right angles to the shaft N and provided
with the face & adapted to come in contact with the stud t and force it in the
direction of the pulley O This movement rotates the casing Q Q¹ to a limited
degree around shaft K and thereby raises worm gear M boxes r r shaft N and
pulley O the pulley moving through the longest arc and being relieved from
the effect of belt o. To keep the shaking frame always in the same relative
position in regard to the main frame, two or more long bolts or rods may be
attached through suitable lugs to the lower end of the shaking frame. The upper
ends of said bolte or rods being suitably connected to the centre cross brace of the
main frame To give large adjusting power of the angle of travel of the end drums

page_text: or rollers in regard to the shaking frame and consequently to control an even
travel of the endless belt or apron, the shafts of said drums or rollers may be
carried in bearings governed by set screws This power of adjustment being in
addition to that described with reference to the depressor and tightening pulleys.
The material is fed onto the travelling belt through a hopper or said box Cl
attached to the shaking frame, the base or delivery portion of said box being
preferably divided by a series of buttons or short horizontal pieces which divide
the material and cause it to be evenly distributed across the surface of the endless
belt or apron. From this delivery point the material next passes beneath a series
of small jets of water B¹ by the action of which the sand and lighter particles are
carried down the belt against its line of travel and are delivered into suitable
sluices or tailing boxes while the heavier particles of metal or metalliferous
substances settle upon the belt and are carried thereby into the concentrating or
collecting box or boxes beneath. The inclination of the entire apparatus may be
varied in a simple manner by means of wedges inserted between the main frame
and the supporting legs morticed into the mud sills upon which it rests
Having thus described the nature of the invention as communicated to me
by my foreign correspondents what I claim and desire to secure by Letters
Patent is―
First In an ore concentrator an endless belt or blanket, a swinging frame, and
means for imparting a shake to said fraine, in combination with the means for
causing said belt to travel forward, consisting of the drum J, having gudgeon j
spiral connecting spring I shaft K crank k and gearing connecting said shaft K
with the driving power substantially as herein described
Second In a ore concentrator an endless belt or blanket a swinging frame and
the means for imparting a shake to said frame, consisting of the driving pulley G
shaft F. crank fand the pitman H in combination with the means for causing said
belt to travel forward consisting of the cone pulley P driving shaft F belt o
pulley shaft N worm gear M gear wheel L shaft K crank k connecting spiral
spring I gudgeon ; and drum J substantially as herein described
Third In an ore concentrator the endless belt or blanket C in combination with
the drums J J¹ shaft K. suitably connected with said driving drum J gear wheel L
worm gear M loosely journalled swinging casing QQ¹ cam S shaft N pulley O,
belt o cone pulley P and main driving shaft F substantially as and for the purpose
specified
Fourth In an ore concentrator, an endless travelling belt or blanket, a supporting
frame and suitable mechanism for imparting a shake thereto, in combination with
the supporting straps E, and the means for adjusting their inclination, consisting of
the pieces e having curved projections e* and slots e¹ the securing bolts b and
curved washers i substantially as described
In Witness whereof I the said Philip Middleton Justice have hereunto set my
hand and cool this twenty fourth day of March in the year of Our Lord 1884
Signed Sealed and delivered
in presence of
ALLEN PARRY JONES
Grad Inst P.A
56 & 55 Chancery Lane
London W.C
PHILIP M. JUSTICE (L.S.)