Year: 1895

page_text: Date of Application, 5th Sept., 1895-Accepted, 9th Nov., 1895

page_text: a different rate of speed from the outer cylinder, preferably faster, causing the
agitating means carried by said cylinder C to travel circumferentially with respect
to the separating surface. The stuffing box is provided with a circular threaded
gland or plug which may be screwed in toward the elastic packing & compressing
it and thus insuring a practically water tight joint.
The inner cylinder is divided by a partition c into two sections c¹ and c². The
former is supplied with orifices D through which mingled ore and a liquid, preferably
water, introduced by a pipe D' passing through the stuffing box D2, similar to B².
is fed to the treatment vessel at or near the head end. Section is preferably
provided with orifices along over the separating surface of the treatment vessel, in
which are preferably screwed, or otherwise secured, hollow projections or tubes d,
through which are forced jets of a liquid, preferably water, supplied by a pipe d
passing through a stuffing-box d². These jets are for the purpose of bringing and
keeping lighter substances in suspension in the liquid during separation by their
impact against the material, also aiding in moving them toward the point of
discharge, and assisting later, by their increased impact, in dislodging the heavier
for removal. The tubes also, in their movement through the liquid and suspended
material, act by their direct contact to mechanically agitate the lighter portion, and
maintain it in suspension.
At the outer extremity of the inner cylinder, beyond the pulley C, is secured a
flanged collar E, having a groove or annular way E formed by said flanges, into
this groove extends the forked end of a lever E2 pivoted at e.
ከ
11.
When the other end of the lever E is moved back and forth, by the means
hereinafter described, the inner cylinder is given
of longitudinal
reciprocation in a direction transverse to the path of rotation of the separating
surface, thus causing the impact jets to travel longitudinally with relation thereto,
bringing practically the whole of such surface under their action.
The inner impact cylinder also serves as a deflector to guide the material along
near the separating surface in the channel or passage, which it forms with the
outer vessel.
The treatment vessel discharges into a hood F, which communicates with branch
pipes F and F2, conducting the lighter and heavier substances respectively to
suitable receptacles, the passage from the hood to the pipes being controlled by the
valve which is automatically operated as hereinafter described. Within the
hood, keyed to the inner cylinder, is preferably placed a circular plate fl which
deflects the material discharged from the treatment vessel into the hood, and at the
same time, by its proximity to the end of said vessel, to so close it that sufficient
resistance is offered to the discharge of material and liquid to maintain the channel
or passage practically full, and keep the material on the separating surface in a
state of submergence, allowing the suspension of the lighter portion.
On the exterior of the treatment vessel, held between a fixed and movable ring,
is mounted the loose cone-pulley G, which is connected by a belt G₁ from a pulley G
on the counter-shalt. This pulley G is recessed out at its side of largest diameter
for a portion of its circumference as shown at y in Figs. 2 and 3. This unequal
distribution of weight serves to impart in its rotation a vibration to the treatment
vessel, assisting in separating lighter and heavier material, and when its speed of
rotation is increased, as hereinafter described, also aids in discharging the latter.
To accomplish the separation of material in the treatment vessel and the separate
discharge of lighter and heavier substances, the speed of rotation of the treatment
vessel, the inner impact cylinder, and the vibrating pulley, the reciprocation of the
inner cylinder, the periods of introduction of material and liquid through pipe D¹
and of impact liquid through pipe d', and the operation of the discharge valve are
preferably automatically controlled by the mechanism which will now be described.
Their actions might however be otherwise effected, manually if desired.
On the counter-shaft B' is fixed a worm g, engaging a worm wheel gl mounted ou
a short shaft 2 journaled in a bracket bolted to one of the counter-shaft standards.
This shaft carries at its inner end a gear H which meshes with one of a series of

page_text: jet orifices, said shaft being movable longitudinally on its axis, substantially as
described.
35. In a centrifugal separator, the combination with a rotatable conical separating
surface, of conical aqueous impact means to effect agitation of material thereon, the
two being relatively movable in a direction transverse to the path of rotation,
substantially as described.
36. In a centrifugal separator, the combination of a conical separating vessel,
and an inner conical shaft or deflector forming therewith an intermediate channel or
passage, the two being gradually relatively movable in such a manner as to enlarge
said channel during the separating period and decrease it during the removing
period, and means for securing at the same time a shorter, quicker movement
thereof, substantially as described.
37. In a centrifugal separator, the combination of a conical separating vessel,
and an inner conical shaft or deflector forming an intermediate channel or passage,
the two gradually relatively movable in such a manner as to enlarge said channel
during the separating period and decrease it during the removing period, means for
securing at the same time a shorter, quicker movement thereof, and automatic
means for effecting such movements, substantially as described.
38. In a centrifugal separator, the combination of a rotatable treatment vessel,
and rotatable separating mechanism therein, means for varying the speed of rotation,
and friction rolls connected thereto and actuated by revolving friction surfaces to
accomplish this variation, substantially as described.
39. In a centrifugal separator, the combination of a rotatable treatment vessel,
and rotatable separating mechanism therein, means for varying the speed of rotation,
friction rolls connected thereto by intermediate gearing, and actuated by revolving
friction surfaces to accomplish this variation, substantially as described.
40. In a centrifugal separator, the combination of a rotatable vessel, means for
supplying material and liquid thereto, valves for regulating the flow thereof, and a
rotating wheel having projecting portions contacting intermittently therewith for
actuating such means, substantially as described.
41. In a centrifugal separator, the combination of a rotatable vessel, means for
producing agitation in said vessel, means for supplying material and liquid thereto,
valves for regulating the flow thereof, and a rotating wheel having projecting
portions contacting intermittently therewith for actuating such means, substantially
as (lescribed.
DAL
FAL 3
2 0
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: 19. In a centrifugal separator, the combination of a rotatable separating surface,
and agitating means movable in a direction transverse to the path of rotation of
such surface, upon a supporting body maintained at a constant distance therefrom,
substantially as described.
20. In a centrifugal separator, the combination of a rotatable separating surface,
and rotatable agitating means movable in a direction transverse to the path of
rotation of such surface, upon a supporting body maintained at a constant distance
therefrom, substantially as described.
21. In a centrifugal separator, the combination with a rotatable separating
surface, of agitating means mounted upon a supporting body maintained at a
constant distance therefrom, the two relatively movable in a direction transverse to
the path of rotation, substantially as described.
22. In a centrifugal separator, the combination of a rotatable separating surface,
and agitating means automatically reciprocating in a direction transverse to the path
of rotation, substantially as described.
23. In a centrifugal separator, the combination with a rotatable separating
surface of agitating means, the two relatively, automatically movable in a direction
transverse to the path of rotation, substantially as described.
24. In a centrifugal separator, the combination of a rotatable vessel or cylinder,
and an agitating shaft or cylinder passing in a watertight manner through one end
thereof, the two relatively movable in a direction transverse to the path of rotation
of said vessel, substantially as described.
25. In a centrifugal separator, the combination of a rotatable vessel or cylinder,
a material supply pipe or conduit communicating therewith in a manner to secure
pressure through the vessel, means for effecting agitation of the material within said
vessel, and means for effecting endways movement back and forth of the agitating
means, substantially as described.
26. In a centrifugal separator, the combination of a rotatable separating surface,
and agitating means movable in a direction transverse to the path of rotation of
said surface, and toward and from the same, substantially as described.
27. In a centrifugal separator, the combination of a rotatable vessel or cylinder,
an inner perforated frame or cylinder, pins within said perforations, and means for
projecting and withdrawing the same, substantially as described.
28. In a centrifugal separator, the combination, of a rotatable vessel, rotatable
agitating means movable along the axis of rotation thereof, and engaged by a
reciprocating bushing to effect such movement, substantially as described.
29. In a centrifugal separator, the combination of a rotatable separating surface,
and aqueous impact means to effect agitation of material thereon, the two being
relatively movable in a direction transverse to the path of rotation, substantially as
described.
30. In a centrifugal separator, the combination of a rotatable separating surface,
and rotatable aqueous means to effect an agitation of material thereon, movable in
a direction transverse to the path of rotation, substantially as described.
31. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, a deflector or cylinder in proximity
thereto, and means for producing a wash or wave motion in the channel between
them, by rapidly varying the size thereof, substantially as described.
32. In a centrifugal separator, the combination of a rotatable, conical vessel, a
conical deflector therein, and means for producing a wash or wave motion in the
channel between them by imparting to one of them a rapid reciprocation,
substantially as described.
33. In a centrifugal separator, the combination of a rotatable separating surface,
and aqueous impact means to effect agitation of material thereon, the two being
relatively, gradually movable in a direction transverse to the path of rotation, and
at the same time quickly movable back and forth to lesser extent in the same
direction, substantially as described.
34. In a centrifugal separator, the combination of a conical shaft provided with

page_text: upon which the material is in a submerged state, and means for securing aqueous
impact force over that portion of the surface where separation is being effected to
cause the suspension of lighter substances, substantially as described.
8. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, means for securing aqueous
impact force over that portion of the surface where the separation is being effected
to cause the suspension of lighter substances, and means for removing the heavier
substances by increased impact force, substantially as described.
9. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, and rotatable means for securing
aqueous impact force over that portion of the surface where separation is being
effected to cause the suspension of lighter substances, substantially as described.
10. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, and means for securing varying
degrees of aqueous impact force over that portion of the surface where separation
is being effected to cause the suspension of lighter substances, substantially as
described.
11. In a centrifugal separator, the combination of rotatable separating surface
upon which the material is in a submerged state, and means for securing aqueous
impact and impellent force over that portion of the surface where separation is
being effected to cause the suspension and removal of lighter substances, substan-
tially as described.
12. In a centrifugal separator, the combination of a rotatable separating surface,
and means for securing pulsatory aqueous impact force over that portion of the
surface where separation is being effected to cause the suspension of lighter
substances, substantially as described.
13. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, and means for securing varying
degrees of centrifugal force, and aqueous impact and impellent forces to effect the
separation of lighter and heavier substances and their removal, substantially as
described.
14. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, means for securing aqueous impact
force over that portion of the surface where separation is being effected to cause
suspension of lighter substances, means for stopping the flow of material to the
separator and increasing the flow of liquid thereto during the removing period, and
starting the flow of material and decreasing the flow of liquid during the separating
period, substantially as described.
15. In a centrifugal separator, the combination of a rotatable vessel or cylinder,
a shaft or cylinder extending through same, such shaft provided with two hollow
sections each communicating with a supply pipe or conduit, and provided with
orifices or perforations communicating with the vessel or cylinder, substantially as
described.
16. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, conduits for supplying material
and liquid thereto, and means for effecting the removal of heavier substances
by increasing the speed of rotation while the flow of material is stopped,
substantially as described.
17. In a centrifugal separator, the combination of a rotatable, vibratable
separating surface upon which the material is in a submerged state, conduits for
supplying material and liquid thereto, and means for effecting the removal of
heavier substances by increasing the intensity of vibration while the flow of material
is stopped, substantially as described.
18. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, conduits for supplying material
and liquid thereto, and means for effecting the removal of heavier substances by
increasing the speed of rotation, substantially as described.

page_text: and result of the agitating effect of impact of the molecules of a liquid, not,
however, necessarily water, and that of the motive or propelling effect of a
flowing liquid.
Although the terms "cylindrical" and "conical" have been applied throughout
to the separating vessel, and the inuer impact shaft or deflector for the sake of
brevity, these forms are not absolutely essential to the operation of th machine,
and any other might be employed by which the desired result would b. obtained.
It is to be understood that the word is used in this generic sense in both description
and claims.
The phrase "constant impact force during the period of separation," and others
similar thereto, have been used, and it will be seen that when, during the periods
of separation and discharge, the impact jets are pulsatory in character, their
maximum and minimum effect will be controlled by the lever actuated valve N³,
and will therefore be constant for such period, making their mean effect also
constant.
It will be noticed that while the aqueous and other forces opposing centrifugal
force, permit or allow the precipitation of heavier substances they cause or effect,
that is compel, the suspension of the lighter in the liquid, whereas the centrifugal
force acts positively to effect both results. This explanation is made because it
was not always possible to bring out the distinction clearly in the claims, without
prolixity, when mentioning these forces in connection.
It is obvious many changes and modifications in the details of construction of
the various parts of the mechanism therein described, may be made as desired by
the constructor, or at best with the varied conditious, under which the machine is
operated, without departing from my invention.
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 what I
claim is :-
1. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, an agitator in proximity thereto,
and means for imparting different speeds of rotation to one of them to effect
varying degrees of agitation of material over the separating surface, substantially
as described.
2. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, a rotatable agitator in proximity
thereto, and means for varying the speed of rotation of said agitator to effect
different degrees of agitation of material over the separating surface, substantially
as described.
3. In a centrifugal separator, the combination of a rotatable separating surface,
a rotatable agitator in proximity thereto, and means for varying the speed of
rotation of said agitator to effect different degrees of agitation of material over the
separating surface, substantially as described.
4. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, an agitator in proximity thereto,
means for imparting different speeds of rotation to one of them to effect varying
degrees of agitation over the separating surface, and means for causing a flow of
liquid to remove separated material, substantially as described.
5. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, a rotatable agitator to separate
lighter materials, and means for increasing the speed of rotation of said agitator to
effect the removal of heavier substances, substantially as described.
6. In a centrifugal separator, the combination of a rotatable separating surface
upon which the material is in a submerged state, a deflector for guiding material
along near said separating surface rotating at varying speeds, and agitating means
carried by said deflector, substantially as described.
7. In a centrifugal separator, the combination of a rotatable separating surface
13

page_text: journaled in the table beneath the sliding plate is a crank or eccentric shaft 6'
driven by a gear 611 connected to any source of power. A connecting rod 7 extends
from the crank to the depending lugs, and when the shaft is rotated causes the
reciprocation of the sliding plate carrying with it the inner cylinder or deflector,
thus giving thereto a movement of longitudinal reciprocation as well as the
rotation imparted to it by the pulley 3". This pulley is secured to the trunnion
by a spline and groove to allow the longitudinal reciprocation of the latter.
In plates 8 8 closing the opposite ends of the inner cylinder is journaled a
shaft 9, which carries on the portion within the cylinder a long sleeve 9', secured
to the shaft to rotate therewith and having along its surface oppositely extending
pairs of perforated lugs 10 10. The lugs 10 have pivoted thereto a bar 11, to
which are secured the agitating pins 12 projecting outwardly, preferably through
wearing sleeves 121 placed in orifices in the surface of the inner cylinder. The
lugs 10 have pivoted to them a counterweight 11 which is connected by a bar 13
to the pin bar 11. The purpose of this counter-weight is to counteract the
outward thrust of the pin bars produced by the action of centrifugal force and
thus relieve the strain upon the operating parts. The shaft 9 extends through the
plate 9', and is secured at its outer end by a double spline and groove to a short
shaft 1 extending within the trunnion 31, and having a cylindrical recess at 14"
into which the shaft 9 projects. This shaft 141 is provided like the trunnion 31
with external circumferential grooves engaging a flanged bushing, which is
supported by a sliding block 15 mounted in guides upon the upper surface of the
plate 5. The outer extremity of block 15 is cylindrically perforated at 15, and
into this perforation extends the end of a short shaft 16 suitably journaled on the
plate 5 and rotated by means of a belt on the broad pulley 16. The end of the
shaft 16, which is within the perforation has upon its surface a right and left
handed continuous spiral groove 17, and into this groove projects a pin 17 mounted
in a screw plug 17 held in a block above the shaft. On the shaft 14' are two
pins 18 (see Figs. 21 and 22) which project through inclined slots 18' in the outer
end of the trunnion 31 of the interior cylinder.
The shaft 16 being continuously rotated, the engagement of the pin 171 with the
continuous spiral groove causes the independent reciprocation of the block 15 from
the sliding plate 5, which results in the pins 18 being forced through the inclined
slots, causing by their thrust the shaft 9 to be rotated slowly ahead of the
trunnion 3. By this movement the bars 11 are moved outwardly radially,
projecting the agitating pins through the holes in the inner cylinder, and upon
the backward travel of block 15 withdrawing them by the movement of the pins
toward the opposite end of the slots.
The operation is so timed that when the period of separation begins the pins
are extended to their outmost limits, and then as separation progresses and the
material accumulates on the separating surface they are slowly withdrawn, main-
taining the degree of agitation approximately constant in the narrowing channel
and keeping lighter substances in suspension without disturbing the heavier. As
the period of separation approaches its end the pins will have been withdrawn
to their inmost point, and the heavier substances are now discharged by projecting
them towards or into the accumulated material, agitating or disturbing it sufficiently
to allow its discharge by an increased flow of liquid.
In this modification the material and liquid are fed to the separating surface
through orifices 19 at the feed end of the interior cylinder, and the material
separately di-charged through orifices 19 at the opposite end of the treatment
vessel. The mechanism for automatically actuating the feed and discharge
valves and varying the speeds of rotation, already described in connection with
the other figures, might be likewise employed here, and has therefore not been
illustrated.
The phrases "aqueous impact force," "aqueous impellent force," and similar
expressions have been used throughout to distinguish between the cause, action

page_text: upper extremity X'. Between the pivot and the weight is a slot X2 in an
enlargement through which projects a pin fixed in the upper end of the upright.
In operation the block is given a movement of comparatively short, rapid
reciprocation by the rotation of the crank-shaft U1, making the inner impact shaft
travel in the same manner longitudinally of its axis of rotation, and transversely to
the path of rotation of the separating surface, causing with the differential speed
of rotation of the two, the impact jets of liquid from orificess to play over,
preferably, the entire surface. At the same time the rotation of the shaft v by
the belt W on the tight pulley ¹ causes, through the intervention of the gearing,
the comparatively slow travel of the plate T³, carrying with it both the fixed
and sliding blocks, resulting in a similar longitudinal movement of the impact
cylinder.
This continues until the bar w² strikes the opposite lug w', actuating the belt-
shifting bar and moving the belts W W₁ on the surface of the pulleys. The travel
of the bar w also causes the lugs to tilt the weighted lever resulting in its falling
to its other limit of motion, that is until arrested by the pin striking the end of
slot, and carrying the belts by the dead point, when each are equally on a fast
and loose pulley. This places the crossed belt W on the pulley v², and rotates the
shaft in the opposite direction, thus changing the direction of travel of the impact
shaft.
The separating vessel has a cylindrical portion a beyond the discharge orifices to
permit the reciprocation of the inner shaft, and the pipe D and d extended
sufficiently through their stuffing-boxes for the same purpose.
As shown in Fig. 12 the conical impact shaft or deflector is about at its extreme
point of travel into the separating vessel, and the period of separation is about to
begin. As heavier material accumulates on the separating surface the shaft is
moved gradually to the right, thus carrying its exterior away from the separating
surface and widening the channel or passage between them. As a result, the
distance between the surface of the impact shaft and the surface of the accumulated
heavier substances is kept approximately constant by this gradual movement,
maintaining an approximately constant ratio between the force of aqueous impact
from its orifices, and the impellent force of the liquid carrying or moving lighter
substances flowing through the channel. This continues until the end of its outward
movement is reached, when its direction of travel is reversed, causing the surfaces.
to gradually approach one another, increasing both the aqueous impact and repellent
forces, thus dislodging the accumulated heavier material, and discharging it
separately. At all times the short and rapid reciprocation is occurring to evenly
distribute the field of action of the impact jets. At the same time this rapid
motion produces a series of slight contractions and enlargements in the size of
the channel, causing a wash or series of waves, which assist in separating lighter
material and suspending it in the liquid in a manner somewhat similar to a jig.
The mechanism for automatically actuating the feed, impact and discharge
valves, and varying the applied forces by different speeds of rotation, already
described in connection with the other figures, may be likewise employed here,
and has therefore not been illustrated.
In the form illustrated in Figures 16 to 22 inclusive, another means for varying
the intensity of agitation is shown. The treatment vessel is journaled in suitable
standards by hollow trunnions 2 2¹, the latter having secured thereto a belt
pulley 2 by which it is rotated. Through these trunnions project the hollow
trunnions 3, 31 suitably journaled in standards and supporting the inner hollow
frame or cylinder and deflector. The trunnion 3' carries a belt pulley 31 by which
the interior cylinder is rotated at a different speed than the treatment vessel,
preferably faster. Near the outer end of trunnion 31 are a series of external
circumferential grooves 4 which are engaged by a flanged bushing 41, this bushing
being carried by a sliding plate 5 which is supported in suitable guides upon a
table 5. On the lower side of the plate are a pair of depending lugs 6, and

page_text: immediately decrease them to the initial point during the period of removal of
Leavier substances, the contact surfaces may be sufficiently increased by adding
the removable plates, and the friction wheels moved well in toward the center of
the gear. As a result, one or the other of the wheels will be in frictional
engagement with the contact surfaces a greater part of the time, actuating the
belt shifters almost continuously, alternately in opposite directions, effecting the
required change. Or if it is desired to maintain the speed of rotation of these
parts approximately constant during the periods of separation and removal, but
of different rates, plates are removed from each of the contact surfaces, and the
friction wheels moved toward the periphery of the gear, giving substantially the
arrangement illustrated in the drawing, when the wheels will be alternately
ngaged and oppositely rotated with intermediate periods of rest, thus quickly
shifting the belt to the one end of the actuating cone pulleys and rotating the
parts at a constant rate for separation, and then to the other ends thereof, varying
the speed to the required amount for discharge, and maintaining them there until
the cycle of operations recommences.
By setting any one of the belt-shifting bars along the threaded rod, the timing
of the movements of the parts it actuates will be changed with respect to its
fellows. The rotation of any one pulley may be maintained constant by throwing
out of action and fixing its belt shifting bar. Or any one of the pairs of pulleys
may be removed and others of different size substituted, or the pulleys reversed in
position on the shaft thus making the change in its speed of rotation opposite to
the others. The setting of the bar m² on the rod K' adjusts the periods of action
of the impact valve, and by putting pulleys of different diameters in place of those
on the rod and on the stem of valve the speed of rotation of said vaive, and
consequently the number of pulsations of impact jets of liquid delivered upon the
separating surface during the time that valve n² is open, may also be varied as
desired, increasing or decreasing the agitating effect.
In the form illustrated in Figures 12 to 15 inclusive, the rotatable separating
vessel S¹ is of conical form, and has a series of peripheral orifices S³ discharging
into the hood F. The inner impact shaft or deflector S2 is also conical, preferably
of about the same taper as the separating vessel, and has over its surface the
impact orifices s. This inner shaft is preferably supported by two, long, hollow
trunnions ², suitably journaled in standards to permit rotation by means of a
pulley T as a different rate of speed from the separating vessel, preferably faster,
and also a movement of longitudinal reciprocation by means of the mechanism
which will now be described.
Below the outer extremity of the trunnion s² is fixed to the bed-plate a table T',
having upon its upper surface a sliding late T2 moving between suitable guide
ways. Upon this plate is located a block mounted to slide in guide ways thereon.
This block carries at its top a journal having a projecting bushing which engages
an annular groove in the outer sur ace of trunnion s². At the end of plate T is
rigidly secured a block U in which is journaled a crank-shaft U rotated by a
pulley U2 from any source of power. A connecting rod u extends from the cranked
portion of said shaft to the sliding block to which it is pivotally connectel. The
plate T is given a motion of slow reciprocation by means of a gear u' mounted on
a shaft u journaled to the table, which meshes with a rack V, on the bottom of
said plate.
The shaft is rotated by a worm-wheel V, which engages a worm Vapon a
shaft extending longitudinally beneath the table and journaled therein. This
shaft has at its outer extremity two tight pulleys e and e² and between them a lo se
pulley Upon these pulleys are an op n belt W and a crossed belt W which
extend to similar pulleys on a counter-shaft. These belts are engaged by three
pins W upon a belt-shifting rod w mounted to reciprocate in brackets on the table.
Upon
this rod are lugs which contact with a rod fixed to the table T
Upon the upper surface of the rod t are two lugs between which projects the end
of a lever X pivoted at its center to an upright on the table, and weighted at its

page_text: force, largely or wholly without frictional contact with the separating surface.
The separation is further aided by the vibration imparted to the treatment vessel
by the recessed pulley (i.
It will not be found necessary under all conditions however, to employ all of the
above mentioned opposing 'orces, and they may be used separately, and of a greater
or less degree of intensity as may best be adapted to the conditions or material
under consideration. It will be understood that the more violent the agitation
with relation to centrifugal force during the separating period, the heavier will be
portions of material discharged during such period, and rice versa.
The separation being accomplished the valves and gearing are in the position
shown in the drawing, and heavier material is now to be automatically discharged.
The group of friction-plates in its upward movement, as shown in Fig. 5, engages
the friction wheel J, and causes it to rotate through the intermediate gearing the
longitudinal threaded rod, thus moving the threaded sleeves and the bars which
they support, shifting the belts to the opposite ends of the cone pulleys, and
opening wide the liquid impact valve N2. At the same time the finger P strikes
the end of lever, which by means of the system of levers already described,
closes the material valve Q, opens the clear liquid valve y. and shifts the position of
the discharge valve f As a result of these changes the supply of material is shut
off from the feed end of the treatment vessel, the speed of rotation of said vessel
is decreased, causing the heavier substances to be held less forcibly against the
separating surface, and permitting them to be dislodged by the increased impact of
the jets of liquid, the greater impellent force of its flow, and the increased agitation
due to the more rapid movement of the tubes. The heavier material is thus carried
out of the treatment. vessel, and into the pipe F2 which conveys it to a separate
receptacle. This position of parts and constant degrees of forces for discharge are
maintained until the group of friction plates in its downward irovement engages
the friction roll J, causing the opposite rotation of the rod K, which with the
striking of the finger P against the lever p restores the elements to their former
condition, and the period of separation follows.
When a separating vessel or cylinder is used, of sufficiently large diameter to
permit an accumulation or head of liquid at the receiving end to secure by the
centrifugal force generated therein the force of flow through the same, the packing
boxes are preferably dispensed with.
By means of adjustments and changes, in the various parts of the mechanism,
the length and frequency of the periods of operation of the elements, the intensity
of the applied forces, and their relation one to the other, may be varied within the
desired limits.
By suitably arranging the speed-gearing H in the usual manner, the relative
speed of rotation of the counter-shaft and the longitudinal threaded rod may be
changed, thus varying relatively, the rate of speed of rotation of the pulleys C¹¹²
and G, and the rate of change in said speed, and consequently between the
intersity of centrifugal force, agitation and vibration, and the change in said
intensity. This adjustment also changes the frequency with which the fingers strike
the valv actuating levers, altering the frequency and length of the periots during
which material and liquid are fed to the treatment vessel irrespective of the speed
of rotation of the counter-shaft. The relation of these may be further controlled
by the circumferential movement of the fuyers on the face of the dise, while the
time and extent of movement of the discharge valve may be independently adjusted
by the point at which its lever is attached to the connecting rod, and the movement
of its valve stem in the connecting socket.
The adjustment of the contact surfaces II, and the friction wheels engaging
therewith, furnish a means for changing the intensity and time of application of
these forces-centrifugal, agitation and vibration-collectively to vary the periods
of separation and removal. If, for example, it is desired to gradually change the
speed of rotation of the separating surface, inner impact cylinder, and vibrating
pulley during the period of separation, say an increase thereof, and then almost

page_text: process herein described, to apply the impact jets in a pulsatory manner, but will
depend upon the grade of material ander treatment and various other conditions.
When the valve n' is not in use the belt is to be removed from its pulleys and
the valve is left open.
The rod K also has secured thereto a cylinder O, having in its surface a
continuous cam groove into which extends the end of the lever E previously
described. The rotation of this groove imparts to the end of said lever a recipro-
cating movement, causing the longitudinal movement of the inner cylinder by the
engagement of its opposite forked extremity therewith.
Upon the opposite surface of the gear from that which carries the friction
plates are preferably three sets of two adjustable fingers P P1, which are secured
to the face of the gear by set screws passing through slots P in an enlarged
portion P3, the slots permitting an adjustment of the fingers circumferentially of
the gear. The finger P lies in the same plane as its enlarged portion, and projects
close to the face of the gear, while the finger Pis bent twice nearly at right angles,
which causes it to project in a plane at a slight distance from the surface; it also
has a greater radial length. These fingers respectively engage the ends of levers pp',
the former being a simple lever pivoted at its center upon a standard mounted on
the bed-plate, while the lever p' is compound, its two sections being mounted upon
two similar standards. The opposite ends of these levers contact with the lower
and upper sides respectively of a lever p², extending at right angles from the end of
the stem of the material feeding valve Q, in pipe D'. The opposite extremity of
the valve stem carries a lever Q, the lower end of which projects through a slot
in the end of a lever Q2 fixed to the stem of the liquid valve 7', communicating
with the pipe D' at a point between valve Q and the treatment vessel.
To the outer extremity of the lever is pivoted a rod R connected to one
member of a bell crank lever R' pivoted to the bed-plate, to the other arm of which
is pivotally attached a long connecting rod R2, leading to the upper extremity of a
lever r, to which it is attached by a bolt passing through a slot . The lower end
of the lever is secured to a rod 2, having a socket at its opposite end in which
is secured, by means of a set screw, the stein of the discharge valve. By changing
the point of attachment of the lever to the rod 2, and by turning the valve stem
in its socket, the extent of movement of the valve may be adjusted, and its relative
time of action to the other elements varied. A weight near the upper end of the
lever assists in throwing said iever in one direction or the other.
As the levers ppl are moved downward by the contact of the fingers P P they
respectively raise and lower the lever, thus opening and closing the valve Q with
intermediate periods during which it is stationary. This lever carries upon its
upper and lower surfaces small pins S which serve to prevent the slippage of
levers p p as they engage it.
As the valve Q is actuated it also in turn opens and closes the liquid valve 1
through the intervention of the levers QQ, at the same time the discharge valve
is operated by the bell-crank lever and its connecting rods and levers.
The operation of the device is as follows: The valve Q being opened to its
fullest extent, ore, in a finely divided state and mingled with a liquid, preferably
water, is fed into the treatment vessel, which is being rotated at a speed sufficient
to develop the desired degree of centrifugal force, in sufficient quantities to fill the
channel or passage between the inner impact cylinder and the separating surface.
Here the centrifugal force causes the material to move toward a position around the
circumference of the vessel and the heavier to lodge upon the separating surface.
At the same time the material in suspension in the liquid and the surface of the
accumulated material is subjected to opposing forces of preferably approximately
constant degrees, in the form of the impact of the jets of liquid issuing from the
orifices in the surface of the inner cylinder, the liquid valve N being partially open,
and to the action of the moving tubes themselves, which produces an agitation in the
material permitting the heavier portion to be precipitated, and causing the lighter
to be suspended in the liquid and moved along toward the outlet by its impellent

page_text: speed gears H', on short transverse shafts H2 and on the last of these shafts is a small
gear h, which engages with a large gear on a stub-shaft 2 journaled in a standard
on the bed-plate. The interposed system of speed gearing is to vary the relative
speeds of rotation of the parts by the interchange and substitution of the gears in
the manner well known.
The gear, which rotates at a comparatively slow rate of speed, carries upon its
inner surface three sets I, 1' and 12 of small movable friction plates i, which are
secured to the face of the wheel at their inner ends by flanged brackets and at
their outer by screws engaging series of holes; by changing the number or
position of these plates the surface of frictional contact may be varied both in
length and position. On a shaft J, suitably journaled in a position parallel with
the face of gear h', are mounted two friction wheels J and J, adjustably secured
thereon by set screws and alternately engaging with the friction plates during the
rotation of the gear. On the end of shaft J is a gear which communicates through
a train of speed-up gears on the short longitudinal shafts, with a gear K
mounted on the end of the longitudinally extending threaded rod K'. This rod is
supported for rotation in standards, preferably mounted on the base-plate, and
carries along its length internally threaded sleeves kkk, upon which are mounted
the transversely extending belt-shifting bars L L L³, which are supported at their
outer ends by sleeves 7, sliding freely upon the rods supported by the cross bars /.
Upon the ends of bars L L L are vertical pins M engaging the opposite sides
of the belts which communicate rotation to the treatment vessel, the inner impact
cylinder and the vibrating pulley.
As the gear is rotated by the intermediate gearing, the sets of friction plates
on its surface engage the friction wheels JJ, and through the speed-up gearing
cause the threaded rod to be rapidly rotated alternately in opposite directions with
greater or less intermediate periods of rest, thus causing the belt-shifting bars to
travel along the rod in accordance with this rotation, and move the belts from one
end of the cone pulleys Ca and G to the other, increasing and decreasing their
speed of rotation with intermediate periods of constant speed.
These pulleys are so arranged on their respective cylinders, that for an increase
of speed of C and G, that of a¹, which is tapered in the opposite direction is
decreased for the reason hereinafter stated. The threaded sleeves kkk² are
preferably made in two parts and upon each of these bears a set screw M' passing
through the belt-shifting bar. If it be desired that any of the belts shall remain
stationary in its movement along the surface of its cone-pulley, maintaining the
speed of rotation of one or more parts constant while the chers are varied, the set
screws are loosened, thus allowing the sleeves to turn freely in the bars and
preventing their travel along the threaded rod. At the same time set screws M2
in the sleeves are tightened to engage the rods thus ensuring the belt shifting
bars remaining stationary.
The rod K also carries another threaded sleeve m, upon which is mounted a
bar m extending in one direction only and supporting at its outer end by a sleeve /
similar to the others. To this bar is secured a rod m², to which is pivoted a
connecting rod N, pivotally connected at its opposite end to the end of a lever N'
on the stem of the clear liquid impact valve N in the pipe d'. The bar m² being
caused to travel back and forth by the rotation of the rod K' within its threaded
sleeve causes the valve N to be alternately opened and closed by the interposed
rods and levers. It may be thrown out of action if desired, by an arrangement
precisely similar to that of the belt-shifting bars.
In the pipe d, beyond the valve N2, is another valve of the straightway type,
having upon its upwardly extending stem a belt-wheel or pulley n, which is rotated
by means of a belt n passing over a pulley near the end of rud K. The sizes
of these pulleys may be so proportioned that during the period in which the valve N2
is opened, the valve n' will be opened and closed a Duinber of times, imparting a
pulsatory action to the jets of liquid issuing from the pipes d, increasing the effect
of their impact force. It is not always essential or desirable, in carrying out the