An Improvement in or applicable to Stamp-batteries.
Year: 1892

page_text: Date of Application, 19th Feb., 1892
Complete Specification Left, 19th Nov., 1892-Accepted, 31st Dec., 1892:
PROVISIONAL SPECIFICATION.
An Improvement in or applicable to Stamp-batteries.
I, CHARLES RALEIGH, of Johannesburg, in the South African Republic,
Milling Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has for its principal object the further utilisation of the anvils, or
"dies," of stamp-mills employed for crushing or pulverising ores, after the same
have become so much worn as to require renewal.
When a die has become reduced by wear to about half its original height or is so
much worn that its surface is below the level of the mortar-box outlet, it is usual
to discard it and to substitute a new one. In outlying districts, this involves a
serious expense.
With a view to the further utilisation of the worn die, I construct it in such a
manner as to admit of its being mounted on a packing-up block which may be
either a new or a worn die; a connector of special construction being employed to
hold the working die in position.
The connector consists of a collar which embraces the lower block or die and is
preferably formed in two parts. It is secured to the lower block or die by means
of bolts, which also serve to hold the separate parts of the collar together.
Mounted upon the same bolts are pivoted studs, which project upwards and carry
clips for engaging over the base-flange of the working die, where they are held by
means of nuts. By slacking these nuts, the studs carrying the clips may be turned
outwards; the anvil being then removable. By suitably shaping the clips, the
rotation or shifting of the working die may be prevented.
Dated the 18th day of February 1892.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.
COMPLETE SPECIFICATION.
An Improvement in or applicable to Stamp-batteries.
I, CHARLES RALEIGH, of Johannesburg, in the South African Republic,
Milling Engineer, do bereby 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 :-
This invention has for its principal object the further utilization of the anvils or
"dies
" of stamp-mills, employed for crushing or pulverising ores, after the same
have become so much worn as to require renewal.
In the accompanying drawings,
Fig. 1 is a side elevation of the clip used for holding the anvil or die on a
packing-up block; Fig. 2 being a corresponding plan.
Fig. 3 is a view, in side elevation, of details embodied in the clip; Fig. 4 being
a corresponding view, partly in transverse section and partly in end elevation.
When an anvil or die has become reduced by wear to about half its original
height, or is so much worn that its surface is below the level of the mortar-box
outlet, it is usual to discard it and to substitute a new one. In outlying districts,
this involves a serious expense.
With a view to the further utilization of the die when worn, I construct it in
such a manner as to admit of its being mounted on a packing-up block, which may

page_text: be either a new or a worn die; a connector of special construction being employed
to hold the die in position.
The connector comprises a collar G G¹, which embraces the lower block or
die H¹ and is preferably formed in two parts G and G¹. It is secured to the lower
block or die by means of bolts K and K and nutsk and k¹. Pivoted on the same
bolts are studs L and L', which project upwards and carry clips M and M' for
engaging over the base-flange of the working block or die H, where they are
held by means of nuts N and N¹. The parts may be so formed that, by slacking
these nuts, the studs L and L' can be turned outwards; the anvil or block H
being then free. By suitably shaping the clips M and M', or by forming
projections and on the studs L and L', the rotation or shifting of the die H may
be prevented.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I claim :-
1. In a stamp-battery or crushing mill, utilizing a worn anvil or die substantially
as herein described.
2. For use in a stamp-battery or crushing mill, a connector constructed sub-
stantially as described with reference to the accompanying drawings and serving
both to hold the die to its seat and to prevent it rotating thereon.
Dated the 9th day of March 1892.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.