Improvements in Ore Crushing and Pulverizing Machines.
Year: 1886

page_text: Improvements in Ore Crushing and Pulverizing Machines.
C
I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex
Engineer, do hereby declare the nature of this invention (a communication from
Joel B. Low of San Francisco in the state of California United States of America
Engineer) and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
i
The Invention though more particularly adapted for crushing ores, is also
adapted for crushing and pulverising other substances.
It consists in the arrangement of certain parts hereinafter set forth constituting
the ore crusher and in a novel feeding device used in connection therewith.
In the accompanying drawing forming part of this specification,. Figure 1 is a
side elevation partly in section of this invention; Figure 2 is an end view;
Figure 3 is a broken part of a plan giving illustration of mode of driving the
machine; Figure 4, is a combination view consisting of transverse sections taken
upon lines a, a. b, b. c, c. d d of Figure 1; Figure 5 shows an end view and
transverse section of the wearing plates'; Figure 6. is an end and side view of the
clamps, fastening the wearing plates in place; Figure 7. is an enlarged view of 'a
portion of the feeding device.
In all the Figures the same letters of reference are used to indicate the same
parts.
A is a circular iron casing in two parts joined at the flanged joint A¹ it is bolted
to the face of the disc B, which is secured on the end of the shaft C. The casing
is lined with wearing plates D, about eighteen in number held in place by
inserting the inner end under a projection cast on the casing whilst the outer
end is secured by the clamp E, bolted to the casing after the plates are put in place..
The front of the casing has a flange F, to which is bolted a screen frame;
This frame consists of two outer rings of wood F' face to face, and two inner
rings FF both pair of rings being joined together by the arms f
The space between the two sets of rings is partly filled by the wooden pieces f1f1
the remaining portion of the space is occupied by the screens G which are held
between the double frame. H, is a metal ball with an outer covering of hard iron
consisting of two saucer shaped pieces h h having bosses in the centre of their
concave sides fitting recesses in the solid ball, and two rings h¹¹ fitting the
convex surface of the ball between the saucer shaped ends.
Two flat rods i i pass through the ball and wedges ¹¹ are driven between to
spread out their ends, to prevent them being drawn through the holes they occupy;
thus the parts are held together. The shaft C is supported in bearings J J and
71

page_text: the machine is driven from the shaft K by the pinion L engaging with the gear
wheel M, which is cast on one of the discs B.
The shaft K is driven by pulleys N, one being fast and the other loose on the
shaft so that the machine may be started & stopped by shifting the belt from one
to the other.
O is a hopper which receives the ore; P is a casing terminating in a spout P',
which leads into the crushing chamber; Q is a plate bolted by its stem to a
lever R which vibrates on end of the rocking shaft S; This plate may be raised
or lowered to regulate the quantity of ore fed into the machine.
The shaft S. rests in the bearings T and is divided in the middle so that each
half may operate separately; U, is a lever loosely pendent from the middle (or
divided ends) of this shaft. 14 to 0.
"
.
This lever is vibrated by the 'cam V, which in revolving with the shaft C. to
which it is secured, strikes the rollers u on the lower forked end.
W. W. are arms fast to the shaft S they have projecting pins w.
XX are hooks which look over these pins and are drawn together or spread
apart by operating the cords Y thus, owing to the varying width of the hooks inore
or less lost motion may be allowed to the effect of varying the amount of
vibration given to the shaft S, and plates Q (connected therewith) by the
movement of the lever U, and finally regulating the quantity of ore fed into the
crushing chamber."
"
The cords Y are carried on rollers Y₁ to any point convenient to reach. Z is a
door giving access to the feeding chamber. 9 is a pipe leading water to the
crushing chamber when the machine is used for wet crushing. "In dry crushing
this pipe is not used. A crushing chamber is supported on each end of the main
shaft, each chamber having iits.(separate..feeding arrangement, machines however
may be constructed with but one chamber. The frame supporting the machine is
of timber plainly shown in drawing..
.2
1.
The operation is as follows:-Ore is passed into the hopper Or and the machine
put in motion, as the plate Q vibrates from side to side the ore falling upon it is
thrown off to drop through the spout into the pulverising chamber where the ball
rolling over it crushes it to such a degree of fineness that it will pass through
the screens.
61.
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1:
> ..
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as cominunicated to
me by my foreign correspondent, I declare that what I claim is :-
1st The crushing machine herein described consisting essentially of the casing A
supported by and revolving with the shaft C, lining plates D crushing ball H, and
vertical annular, screen G arranged and operating substantially, as described. .
2nd The adjustable feeding device herein described consisting essentially of the
hopper O, casing P, spout P₁, plate Q, lever R, shaft S, arms W and pins w
lever U and hooks X, X, and, cam V secured on shaft C arranged and, operating
substantially as herein set forth.
3rd The crushing ball herein described consisting essentially of the, interior
perforated ball H outer shell sections.h h¹ rods i and wedges i, i¹ substantially as
herein set forth.
"