Improvements in and relating to the Construction of Stamping Mills for the Disintegration of Ore.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to the Construction of Stamping Mills
for the Disintegration of Ore.
I, ADOLF VESKA, of Milesov, Bohemia, in the Empire of Austria, Engineer,
do hereby declare the nature of this invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement:-
The nature and object of my invention is the construction of a stamping mill
with automatical feed regulation, with grates submerged in water, and with better
fitting of the studs or bosses on the stem of the stamper.
In the accompanying drawings,
Fig. 1 is an elevation in section of a stamping-mill, constructed in accordance
with my invention.
Fig. 2 is a plan or cross-section of the same taken through the line A-B,
Fig. 1; and
Fig. 3 is a side view, in which the side walls c2 and c³ and mortar c are partially
removed.
Figs. 4 to 10 are details of the arrangement.
a is the stamper head, fixed to the stem 6; and a' is the die. The latter sits in a
mortar-like cylinder usually of sheet metal c. These mortars c are divided from
each other by partition walls c' (see Fig. 2) between side walls
which sits within another box, of which c³ are side walls; c¹ and
height, the grates s s reclining on the flanks of the walls c¹
Fig. 1.
of the inner box,
c² are of the same
and c³, as seen in
The ore is fed from the reservoir R upon the inclined plane k', attached to bar t
which glides over rollers e. The lower end of this bar works through the eye o of
the bar u, seen in Figs. 1, 8, 9 and 10, which is guided vertically between w and v²,
whilst the lower end of bar t reposes in, and is guided by, support v, as seen in
Figs. 7 and 8. The upper end of bar t is bent to form hook t¹, so as to be acted
upon by the cam y', keyed upon the shaft y, which receives its rotative movement
by a transmission from the cam shaft a, seen in Figs. 1 and 7. The vertical bar "
is pulled by the action of the spiral spring or other suitable device, until it reaches
the lower end of the bar t, which passes through the eye o. A piece is fixed to
the lower part of bar t, and bears against the bar u immediately below the eye o,
when in its highest position, to arrest the feed as hereinafter described.
The inclined plane k¹ may have a slight to and fro movement imparted to it, or it
may remain stationary, as circumstances may require, so long as bar u is lifted up,
and so as to shift the ore down upon k, as soon as hook t¹ can be pulled upon the
cam y. This is the case when bar is pushed down so as to let the piece t²,
attached to bar t, pass through its eye.
By the to and fro movement of the inclined plane k¹, the feed of ore will
accumulate, within certain limits, under the head of the stamper, when it then arrests
the descent of the head a and bosses m and n, which consequently fail to strike the
propi, (see Figs. 1 and 4) the inclined plane remaining in its highest position,
shutting off the further supply of ore. The layer of ore under the head a will
now be crushed and diminished by the repeated blows of the head a', and the
crushed or pulverized material washed away by water passing from pipe z, until
the head a and bosses m and n fall again deep enough to allow boss m to strike
prop and push down eye o of bar u letting piece 2, attached to bar t, to pass
through, at which time the feed begins anew.
It will therefore be obvious that the layer of ore between the head and the mortar
will be kept within certain limits, being automatically regulated.

page_text: The bosses m and n may be arranged in any appropriate manner. However,
I prefer to fix them by means of a ring p, p, laid in horizontal grooves g of a
semi-circular section. Such grooves are formed close to each other on the stem b,
and for the purpose of adjustment the ring p, p can be laid in any one of these
grooves. The ring is cut in two equal halves and laid between the two bosses m
and n,
in the manner seen in Fig. 4, when both bosses are then secured together
by the bolts q. The height of the prop i set in the recess u' of the bar u may
be varied by substituting props of different sizes, and displacing ring p, p from one
groove to the next.
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. A. stamping mill with inner and outer coffer or box, each head a working
in a mortar c. separated from the next by a transverse wall c', substantially as
described.
2. Grates s, submerged in water, and reposing upon the side walls of the inner
and outer coffers, substantially as described.
3. In an automatical feed regulation, inclined plane k¹³, cam y¹, hook t¹, bar t,
eye o, and bar u, operating substantially as described.
4. The employment of bosses m & n secured to the stem b, substantially as
described, and illustrated in Fig. 4.
5. Props i of different lengths in combination with annular grooves or rills g, for
the purpose of varying the limit of the layer of ore under the head of the stamp a,
substantially as set forth.
6. The combination of an automatically regulated feeder k¹ with double boss m
& n and an annular divided ring p, p, the prop i carried by the bracket u¹ sub-
stantially as described and illustrated.
Dated this 9th day of January 1891.
THOS RICHMOND,
Agent.