Improvements in Pneumatic Stamps for Crushing Ores.
Year: 1896

page_text: Date of Application, 18th Feb., 1896
Complete Specification Left, 18th Nov., 1896-Accepted, 19th Dec., 1896
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Stamps for Crushing Ores.
I, DENIS EMBLETON, of 98, Albion Street, Leeds, in the. County of York,
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to certain improvements in dry crushing pneumatic stamps
and has for its object 1st. The constant circulation of the material being crushed,
2nd. The withdrawal of the particles crushed, when fine enough to pass through
the various meshes of the sieves, and 3rd. The prevention of the sieves, forming the
sides of the mortar box, being choked as hitherto.
I construct air inlets under each sieve, through which, by ordinary means, air
is forced into the box, and thus the material being crushed is kept in constant
circulation. I exhaust the particles crushed by outlets through each sieve by
ordinary means.
In order to clear the sieve more effectually than hitherto, I connect to the main
conduit from the blower, a flexible pipe terminating in a nozzle and by means of a
valve, when required, I am enabled to direct the force of air against each of the
sieves and thus clear the same and prevent choking which leads to stoppages,
in as much as, it is impossible for the fine particles crushed to pass through the
sieves.
of Wahmuar 1896.
JOHN WAUGH,
Agent.
Improvements in Pneumatic Stamps for Crushing Ores,
I, DENIS EMBLETON of 98, Albion Street, Leeds, in the County of York,
Mechanical 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 :-
This invention relates to certain improvements in dry crushing pneumatic stamps,
and has for its object 1st. The constant circulation of the material being crushed,
2nd. The withdrawal of the particles when fine enough to pass through the various
meshes of the sieves, and 3rd. The prevention of the sieves forming the sides of the
mortar box being choked as hitherto.
In describing my invention in detail reference is made to the accompanying
drawing representing a section through the mortar box of a stamp suitable for
crushing ores with my improvement added thereto.
I arrange pipes A. inside the mortar box B. each terminating in a cross piece C.
perforated on one side of the pipe at D. These pipes A. and C. are connected to
a blowing fan or the like by main pipe E. through which air is forced into the

page_text: mortar box B, the air escaping through the perforations D. on to the ore thereby
keeping the same in circulation within the said box.
The crushed particles are drawn through the sieves F. by an exhauster of the
ordinary construction coupled to the pipe G. and in order to more effectually clear
the sieves F. of the pulverised ore, I connect to the main pipe E. a flexible hand
pipe or tube H. terminating in a nozzle J. On removing a cover plate at K. or L.
I am enabled by the hand pipe H. to direct the force of air escaping from the
nozzle J. against the outer surface of each sieve F. and thus clear the same of the
pulverised ore adhering to the sieves.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,
1. A machine for pulverising ores combined with cross pieces C. perforated
at D. in the position for directing the currents of air upon the ore undergoing
pulverization, all arranged substantially in the manner as shown and described.
2. A machine for pulverising ore combined with a hand pipe H. and nozzle J.
coupled to a blowing fan for the purpose as herein before described.
3. The combination with the mortar box of a pulverizing machine of the blowing
and exhausting pipes, all arranged substantially in the manner and for the purpose
as herein before set forth and illustrated by the drawings.
Dated this 17th day of November 1896.
JOHN WAUGH,
Agent.