Improvements in Ore-dressing Apparatus.
Year: 1891

page_text: Date of Application, 28th Nov., 1891-Accepted, 27th Feb., 1892
COMPLETE SPECIFICATION.
Improvements in Ore-dressing Apparatus.
I WILHELM JULIUS BARTSCH of 82 Lindenaush Dresden in the Empire of
Germany Engineer do hereby declare the nature of this invention and in what
nanner the same is to be performed, to be particularly described and ascertained
and by the following statement :-
My invention relates to continuously working ore-dressing frames shown in the
ccompanying drawings and is the result of many years practical experience, it
voids the defects which are to be found in apparatuses as at present made and
takes considerably less power as well as adopts a more rational and better system of
working.
My invention will be readily understood by reference to the accompanying sheet
of drawings in which
Fig. 1 is a plan of the general arrangement.
Fig. 2 a cross-sectional elevation and Fig. 3 a detailed plan of part of my said
improvements.
Like letters of reference denote corresponding parts in each view.
My improved ore-dressing frame consists of a wooden table n having its annular
surface sloping downwards towards the circumference. On the underside of said
table is fixed a channel iron o which rests upon runners prevolving in suitable
To the underside of said channel iron o
bearings secured to the foundation r.
1
are bolted two or more fixings carrying adjustable spring buffers which when
motion is imparted to the table through step cone shaft and pulley is
compressed between stops (fixed to foundation r) thereby taking up the elasticity
of the spring which when fully absorbed gives to the table the necessary jogging
movement.
Upon the annular axis c circular feed channel a rose i worm-wheel e and shafts
or receivers djkl and mare mounted so as to freely revolve. The shafts or
receivers being coupled up to axis c and worm-wheel respectively by means of
rods w.
The charging is effected by a cone-shaped receptacle (or other similar con-
trivance) into the circular feel-channel a which terminates below in a point and is
furnished throughout one third of its circumference with holes for regularly
distributing the material to be dressed the length of the charging-edge or tilt b
above the frame.
By means of the annular vertical axis e rotary motion is effected with variable
velocity through step cone e worm y and worm-wheel.
The material fed into the receptacle issues through the perforations & and flows
slowly towards the periphery forming arc-shaped undulations as shown in dotted
lines Fig. 1 over the tables or surfaces n which are made of india-rubber or other
suitable material and which rests on a wooden framework, as shown in section
Fig. 2.
While passing along in this manner the material keeps spreading out more and
more, becoming in consequence shallower, flows slower and the light, barren or
useless slime leaves the dressing-frame by the shaft d which is two and half times
the length of perforated channel b. The specifically heavier remains on the frame
5 for further treatment.
This perfectly natural ore-dressing process already referred to goes on under a
continuous forward motion of the whole frame.
The jogging motion is produced by cams or cogs on the periphery of the fraine,
the lift and strength of the forward motion diminishes after passing the middle of
U the frame and also in the opposite direction. In consequence the matter which is

page_text: on the frame is in constant vibration, the lighter parts rise to the surface whilst the
heavier sinks and adheres to the table in consequence of this an extraordinarily
small loss of useful mineral is effected.
The number and length of the lifts and the strength of the jogging motion can
be regulated by the step-pulley the "adjustment" and the springs h.
The feed channel a moves in the direction of the arrow and with it the per-
forated pipe or rose which is bent into an irregular curve as shown and discharges
onto the periphery with likewise variable velocity and controllable strength of jet,
water being supplied thereto through the annular axis c.
This said rose washes (beginning at the top and gradually developing greater
force) the materials lying on the table in such a manner that in consequence and in
accordance with natural laws, the lightest in specific gravity first then the heavier
and finally the heaviest makes its way to the end of the rose lying on the
periphery.
The frame or buddle is a staple and durable apparatus and the simplest
conceivable.
By means of the jogging motion the axles otherwise needed and the damage
resulting therefrom are by this my said improved apparatus totally avoided, as will
be understood by reference to Fig. 1 which shows the manner of working up slime
of lead and blende.
d is the outlet of the ore-slime.
k is the outlet of the first blende products.
is the outlet of the second blende products.
m is the outlet of the first lead products.
I is the outlet of the second lead products.
The second lead and blende products are either as shown at Fig. 3 continuously
led by self acting machinery from one or several of these said buddles for further
working up to one or more deeper-lying similar buddles, or turned back to go
through the original process, or collected and passed through special but similar
buddles.
Having now particularly described and ascertained the nature of my said
invention what I claim is.
1. A continuously acting ore-dressing frame or buddle distinguished by the
combination of a rotating receiving-arrangement a and a pipe with rose i extending
in an irregular curve from the charging receptacle to the periphery of the frame,
with a staple and firm table exposed to a continuous jogging, whereby the velocity
of the charging receptacle and the pipe with rose as also the strength of the jet in
the latter and the number strength and height of lift of the jogging motion can be
regulated at will.
2. The combination of several ore-dressing frames in such a manner that
the second products of one or more frames can be delivered in a self-acting
manner to one or more deeper lying frames for further working up of the
material.
_ Dated this 27th day of November 1891
H. F. BOUGHTON, M.I. Mech. E.,
Sheffield and Barnsley, Agent for the Applicant.