Year: 1886

page_text: I, HENRY FRANK DALE of 446 Strand in the County of Middlesex, American
Agent do hereby declare the nature of this invention (a communication to me from
abroad by The Tabor Concentrator Company of Denver Colorado, United States of
America) to be as follows:-
This invention relates to that class of ore concentrators in which the ore-bed is
moved; and it consists in certain improvements in means for actuating the ore-bed
as will be hereinafter fully described and pointed out.
.
The machine is rectangular in form and about ten feet long and six feet wide.
The stationary framework consists of a base-frame of square timber, and iron
upright brackets at each end. A main shaft is adjusted in the middle of the frame
and extends from end to end. It is run from a driving-shaft and gears or it may
be run from a belt where mounted directly upon it. At each end of the frame,
mounted on the brackets are upright shafts which are run from the shaft by gears.
On the top of these upright shafts are crank-heads with adjustable crank-pins
which are adjusted by screws. The crank-pins pass transversely through trunnion-
bars which are mounted in boxes on cross-beams of a frame. This frame is supported
on these trunnions and on universally-jointed toggles at each corner of said frame.
These toggles are provided with round ends, which are inserted in cups attached
to the frame and arc-shaped blocks. It will be understood that as the upright
shafts are revolved the frame is given a horizontal rotary or orbital movement, the
radius of the circle of rotation being adjusted by the adjustment of the crank-pins°
in the heads. As this rotation takes place the toggles will lift the frame up first
on one side and then on the other, thus rocking it on its trunnions. The degree
of this rocking is also adjustable by adjusting the feet of the toggles on the arc-
shaped blocks which are attached to the base.
.
A second frame is mounted on the main frame on rollers in brackets at the four
corners. This frame is so held that it receives all the movements given to the main
frame and it may also be moved longitudinally on its rollers independently thereof.

page_text: Such a longitudinal movement is given to this frame by the following appliances:
On the main shaft is an eccentric which is connected by a connecting-rod with an
arm, said connection being made by a universal joint, said arm being collared upon
a shaft, on which is a disc having a catch, and on the arm is a pawl which engages
with the catch. At the ends of shaft are discs with catch-pins which engage with
other catch-pins on the sides of the second frame. When the arm is pulled down
by the eccentric the shaft is rocked, and this by reason of the, catches draws the
frame forward; but when the arm has been depressed a certain distance the pawl
comes in contact with stop-pin and is thrown off the catch.
A bar is hinged to the body of the stop-pin and extends through the pawl.
Interposed between the hinge and pawl is a coiled spring, which is compressed when
the frame is drawn forward and acts upon the pawl when the latter is released.
When this occurs, a reacting spring which is adjusted to resist the separation of the
buffers suddenly drives the frame back giving it a sudden jerk. The buffers are
preferably angle-irons attached respectively to the main and second frames. To
the buffers is attached a rod having a set-screw at its distal end, and a coiled spring
interposed between the set-screw and the second buffer so that when the frame is
drawn back the spring will be compressed and will force the buffers together when
the pawl has been released from catch. This whole movement need not be more
than a quarter of an inch.
A rubber plate may be put between the buffers to prevent noise if desired.
It will be understood that the second frame has imparted to it a horizontal rotary
and a vertical oscillatory and a sudden intermittent longitudinal movement. On
this frame I mount the ore-bed, and thus to it is imparted all the forenamed
movements, as well as a continuous longitudinal or feeding movement. The manner
of so mounting the ore-bed is as follows: At each end of the frame are brackets
which are provided with an adjustable part which is mounted on guides on the
brackets. The said parts carry the journal-boxes of the drums on which the
endless ore-bed is adjusted. The brackets at one end of the frame are mounted so
as to be movable on plates and made adjustable by screws so as to properly adjust
the drums to the length of the belt-like bed. The screws are inserted in screw-
threaded lugs on the plates and work in sockets in the frame. If it be desired to
adjust the frame toward the front of the machine, the screw nearest the front is
partly unscrewed, and the screw at the other side of the frame screwed in until the
.desired adjustment is made. On each side of the upper part of the bed are rails in
which are journaled rollers which prevent the bed from sagging between the drums.
The bed may be set perfectly level, but I prefer to give it a slight incline toward
the tail. The bed is made to move slowly toward the head-that is, up the incline.
This movement is effected by a slow rotation of one of the drums by a clutching
device which is operated by a rod crank, rock-shaft, rock-arm, and eccentric. The
crank is made adjustable, so as to regulate the degree of movement. A feeding-
hopper, a water supply water jets for clearing the concentrations or headings from
the bed and a headings-receiver are provided.
The bed may be made of india-rubber or of metal, and it may be in one piece.
The surface of the bed is divided into a series of pan-like spaces by curved riffles.
The bottom of these riffles may be flat, or depressed. The riffles catch and retain
the matter being acted upon, and also serve as dams to the water; and being
curved, the water. and sand are held as in a pan, and the rotary motion given to the
bed agitates the water and sand substantially the same as a miner agitates them in
a hand-pan. The light particles of sand escape with the water over the top of the
-riffles and pass toward the tail end of the machine, while the ore is retained in the
pans, and is thus carried toward the head of the machine. The bed is made with
side pieces or flanges, to prevent the matter being acted or operated upon from
escaping at the sides.
The jerking or jarring movement is for the purpose of moving pebbles or coarse
pieces of rock which are not weighted with ore, and which are too heavy to be

page_text: washed over the riffles by the action of the water toward the tail end of the
machine; and hence, when such matter does not exist in the auriferous matter
being operated upon the said jarring movement is not necessary. From the fore-
going the operation can be sufficiently understood without further description.
PHILIP M. JUSTICE,
55 and 56, Chancery Lane, London,
Applicant's Agent.
Improvements in and Connected with Ore Concentrators.
I HENRY FRANK DALE of 446 Strand in the County of Middlesex American
Agent, do hereby declare the nature of this invention (a communication to me from
abroad by The Tabor Concentrator Company of Denver Colorado United States of
America) and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to that class of ore concentrators in which the ore-bed is
moved; and it consists in certain improvements in means for actuating the ore-bed,
as will be hereinafter fully described and pointed out in the claims.
My device is illustrated in the accompanying drawings, as follows:
Figure 1 is a side elevation.
Figure 2 is a top or plan view with parts broken away to show other parts.
Figure 3 is a vertical section at one end of the machine on the line x, x, in Fig. 4.
Figure 4 is an end elevation with parts broken away.
The machine is rectangular in form and the one which I have constructed is ten
feet long and six feet wide. The stationary framework consists of a base frame I,
of square timber and iron upright brackets I¹, I' at each end. A main shaft 3 is
adjusted in the middle of the frame and extends from end to end. It is run from
a driving-shaft and gears 1, and 2 or it may be run from a belt where mounted
directly upon it. At each end of the frame mounted on the brackets I I¹ are
upright shafts 6, 6 which are run from the shaft 3 by gears 4 and 5. On the top
of these upright shafts are crank heads 7, 7, with adjustable crank pins 8, 8,
which are adjusted by the screws 9, 9. (See figs. 3 and 4). The crank-pins_pass
transversely through trunnion-bars 10, 10, which are mounted in boxes H, H, on
cross-beams of a frame G. This frame is supported on these trunnions and on
universally-jointed toggles J, J, J, J, at each corner of said frame. These toggles
are provided with round ends which are inserted in cups j, attached to the frame G
and arc-shaped blocks J. In Figs. 3 and 4 this arrangement is clearly shown.
However in fig. 4 the boxes H H, are broken away, but are clearly seen in Fig. 3

page_text: .
and also in Fig. 1. It will be seen that as the shafts 6, 6, are revolved the
frame G is given a horizontal rotary or orbital movement, the radius of the circle
of rotation being adjusted by the adjustment of the crank pins 8 in the heads 7.
It will also be seen that as this rotation takes place the toggles J, will lift the
frame up first on one side and then on the other, thus rocking it on its
trunnions 10. The degree of this rocking is also adjustable by adjusting the feet
of the toggles on the arc-shaped blocks J, which are attached to the base I. The
throw of these toggles is shown by dotted lines in Figs. 4 and 1.
A second. frame F is mounted on the frame G on rollers L, L' in brackets K at
the four corners. This frame F is so held that it receives all the movements given
to the frame G, and it may also be moved longitudinally on its rollers L, L¹,
independently of the frame G. Such a longitudinal movement is given to this
frame by the following appliances: On the shaft 3 is an eccentric 19, which is
connected by a connecting rod 18, with an arm 16, such connection being made by
a universal joint 17, said nrm 16 being collared upon a shaft 11, on which is a
disk, 13 having a catch 14, and on the arm 16 is a pawl 15, which engages with
the catch 14. At the ends of shaft 11, are disks 12, with catch pins f¹, which
engage with catch-pins f on the sides of the frame F. When the arm 16 is pulled
down by the eccentric 19, the shaft 11, is rocked, and this by reason of the
catches f, f, draws the frame F forward; but when the arm 16 has been depressed
a certain distance the pawl 15 comes in contact with the stop-pin 21 (see Figs. 1
and 3), and is thrown off the catch 14. The part 20 consists of a bar hinged to
the body of stop 21, and extends through the pawl 15. Interposed between the
hinge and pawl is a coiled spring, which is compressed when the frame is drawn
forward, and forces the pawl into the position shown in Fig. 1 when the latter is
released. When this occurs, a reacting spring F, which is adjusted to resist the
separation of the buffers F¹, G₁, suddenly drives the frame F back, giving it a
sudden jerk. The buffers F¹ and G¹ are preferably angle-irons attached, respectively
to frames F. and G. To buffer G is attached a rod having a set-screw at its
distal end, and a coiled spring F³, interposed between the set screw and the buffer F¹,
so that when the frame F is drawn back the spring will be compressed and will
force the buffers together when the pawl has been released from catch 14. This
whole movement need not be more than a quarter of an inch.
A rubber plate g, may be put between the buffers F" G₁ to prevent noise if
desired.
It will now. be seen that the frame F has imparted to it a horizontal rotary and
a vertical oscillatory and a sudden intermittent longitudinal movement. On this
frame I mount the ore bed, and thus to it is imparted all the beforenamed move-
ments, as well as a continuous longitudinal or feeding movement. The manner of
so mounting the ore-bed is as follows: At each end of the frame are brackets B',
which are provided with an adjustable part B³, which is mounted on guides B on
the part B. The said parts B³ carry the journal boxes of the drums B¹, on which
the endless ore-bed B is adjusted. The brackets B2, at one end of the frame, are
mounted so as to be movable on plates B5, and made adjustable by screws B6, so as
to properly adjust the drums to the length of the belt like bed B. The screws B®
are inserted in screw threaded lugs be, on plates B, and work in sockets 67, in the
frame B. If it be desired to adjust the frame B2, towards the front of the machine
the screw nearest the front is partly unscrewed, and the screw at the other side
of the frame screwed in until the desired adjustment is made. On each side of the
upper part of the bed are rails B', in which are journaled rollers b, b, b, which
prevent the bed B from sagging between the drums. The bed may be set perfectly
level, but I prefer to give it a slight incline toward the tail. The bed is made to
move slowly toward the head-that is, up the incline. This movement is effected
by a slow rotation of one of the drums by clutching device 28 and 27, (as shown it
is a friction or binding clutch but it may be a toothed ratchet, if desired) which is
operated by the rod 26, crank 25, rock shaft 22, rock arm 24, and eccentric 23.
The crank 25 is made adjustable so as to regulate the degree of movement. A is

page_text: the feeding hopper; C the water supply D, d, d, water-jets for clearing the
concentrations or headings from the bed. E is the headings receiver.
The bed B may be made of india-rubber or of metal and it may be in one
piece.
The surface of the bed is divided into a series of pan-like spaces B8, by curved
riffles. The bottom of these riffles may be flat as shown in fig. 2 or depressed as
shown in Fig. 3. The riffles catch and retain the matter being acted upon, and
also serve as dams to the water; and being curved the water and sand are held as
in a pan, and the rotary motion given to the bed agitates the water and sand
substantially the same as a miner agitates them in a hand pan. The light particles
of sand escape with the water over the top of the riffles and pass toward the tail
end of the machine, while the ore is retained in the pans, and is thus carried
toward the head of the machine. The bed is made with side pieces or flanges, to
prevent the matter being acted or operated upon from escaping at the sides.
The jerking or jarring movement is for the purpose of moving pebbles or coarse
pieces of rock which are not weighted with ore and which are too heavy to be
washed over the riffles by the action of the water toward the tail end of the
machine; and hence, when such matter does not exist in the auriferous matter
being operated upon, the said jarring movement is not necessary. From the
foregoing description the operation can be sufficiently understood without further
description.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to
me by my foreign correspondents I declare that what I claim is-
1. In a wet-ore concentrator, the combination of an ore-bed having a series of
curved riffles forming a series of pan-like spaces, a frame supporting said ore-bed,
and mechanism for actuating said ore bed in a horizontal orbit, substantially as
described.
2. In a wet-ore concentrator, the combination of an endless-belt ore-bed having
a series of curved riffles forming a series of pan-like spaces, drums on which said
ore bed is mounted, a frame supporting said ore-bed, and drums and actuating
mechanism substantially as described.
3. In a wet ore concentrator, the combination substantially as described, of the
following elements an ore-bed having a series of riffiles forming a series of pan like
spaces, a frame supporting said ore bed, gearing substantially as described for
moving said frame in a horizontal orbit, a base frame, and universal-jointed
toggles for giving said frame a tipping movement as it is rotated, substantially
as shown.
4. In a wet-ore concentrator, the combination substantially as described, of the
following elements: an ore-bed, framework for supporting said ore-bed consisting
of two frames one of which supports the ore bed and rests upon the other, and is
movable thereon longitudinally, gearing, substantially as described, for moving
both said frames in an orbit and other gearing, substantially as described for
reciprocating the upper frame upon the lower while both are being rotated as
Bet forth.
5. In a wet-ore concentrator, the combination with the ore-bed B, mounted and
moved as a conveyor, substantially as described of the frames G and F, the upright
shafts 6, 6, crank pins 8, toggles J, J, trunnions 10, 10, and crank heads 7, 7, for
supporting and moving said frames, in the manner and for the purposes set forth.
6. In a wet-ore concentrator substantially as described, the combination with
the ore-bed B, and the frames F and G, of the upright shafts 6 and 6 adjustable
cranks 7, 8 and 7, 8, the trunnions 10 and 10 and the toggles J, J, J, J substan-
tially as and for the purposes mentioned.
"
7. The combination, substantially as herein described, with the ore-bed B, of the
frames F and G, cranks 7, 8, trunnious 10, toggles J, and the arc-shaped foot-
plates, for the purposes mentioned.

page_text: 8. The combination with the oré-bed B and the frames F and G, of the buffers
F, G, spring F, the shaft 11, disks 12, 12, and 13, catches f, f, f' f¹, and 14,
pawl 15, arm 16, connecting-rod 18 and eccentric 19, as described, and for the
purposes mentioned.
9. The combination, with the bed B, and drum B¹, of the clutch device 27, 28,
rod 26, crank 25 shaft 22, arm 24, and eccentric 23, as described and for the
purposes mentioned.