Coal or other Minerals in Mines and Quarries.
Year: 1887

page_text: Date of Application, 22nd Dec., 1887
Complete Specification Left, 21st Sept., 1888
Complete Specification Accepted, 26th Oct., 1888
простение д тасцінету от пррагали тог DICKIES OF FOTCING
Down Coal or other Minerals in Mines and Quarries.
We, JAMES CUNLIFFE, Colliery Manager, and JOHN WHITEHEAD, Colliery Pro-
prietor, both of Duxbury Park Colliery, near Chorley, in the County of Lancaster,
do hereby declare the nature of this Invention to be as follows:-
This invention is designed to effect the breaking or forcing down of coal or other
minerals in mines and quarries by the use or employment of machinery or apparatus
so as to obviate the necessity of employing explosives.
We employ a metal tube connected at one end by means of a suitable coupling to
hydraulic pumping apparatus of the ordinary or any convenient kind preferably
arranged to be worked by hand. The other end of the metal tube opens into an
enlarged part forming a tubular box or cylinder open at its outer end and enclosing
a ram of about its own length fitted therein so as to be capable of being forced
outwardly upon pressure being exerted upon it from the hydraulic pump. The
action of the apparatus as above described is as follows: As applied in a coal mine
the cylinder end of the metal tube is inserted within a drill hole (of the kind usually
made in coal mines for the reception of explosives) and pushed forward against the
end of the hole whereupon the annular space around the metal tube is tightly packed
and stemmed in a manner similar to that which obtains when explosives are
employed. The hydraulic pump having been coupled up to the outer projecting end
of the metal tube and the pump actuated the pressure on the ram thereupon gives an
outward pressure to the metal tube and cylinder which being fast within the coal by
being packed and stemmed therein as above described forces out and breaks the coal
in its vicinity.
ค.
1
1002
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicants.

page_text: Down Coal or other Minerals in Mines and Quarries.
We, JAMES CUNLIFFE, Colliery Manager, and JOHN WHITEHEAD, Colliery Pro-
prietor, both of Duxbury Park Colliery, near Chorley, in the County of Lancaster,
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 is designed to effect the breaking or forcing down of coal or other
minerals in mines and quarries by the use or employment of machinery or apparatus
so as to obviate the necessity of employing explosives.
We employ a metal tube connected at one end by means of a suitable coupling to
hydraulic pumping apparatus of the ordinary or any convenient kind preferably
arranged to be worked by hand. The other end of the metal tube opens into an
enlarged part forming a tubular box or cylinder open at its outer end and enclosing a
ram of about its own length fitted therein so as to be capable of being forced outwardly
upon pressure being exerted upon it from the hydraulic pump.
The action of the apparatus as above described is as follows:-As applied in a
coal mine the cylinder end of the metal tube is inserted within a drill hole of the
kind usually made or drilled in coal mines for the reception of explosives (although
of somewhat larger diameter and not so deep) and pushed forward against the end of
the hole whereupon the annular space around the metal tube is tightly packed and
stemmed" in a manner similar to that which obtains when explosives are employed.
The hydraulic pump having been coupled up to the outer projecting end of the metal
tube and the pump actuated the pressure on the ram thereupon gives an outward
pressure to the metal tube and cylinder which being fast within the coal (by being
packed and stemmed therein as above described) forces out and breaks the coal in its
vicinity.
Fig. 2 is a sectional view shewing the construction and arrangement of parts
apparatus.
it
In the accompanying drawings Fig. 1 is a sectional view shewing the improved
apparatus in working position, and
of the
A represents the coal or other mineral to be operated upon; a hydraulic force
pump or head of an ordinary type worked by hand by the to and fro movement of
handle c;
d is a metal tube connected at one end to the force pump 6 and at its
other end to the cylinder or barrel e within which is enclosed the ramf. g is a flexible
leather washer held in place on the end of the ram f by a metal plate h and a fastening
k is the drill hole in the coal and j the stemming or tamping" tightly
packed around the tube d. In practice we find it desirable to employ curved taper keys
such as as an additional means of fastening the apparatus securely in the hole k
and these keys are inserted and tightened up prior to the operation of stemming or
tamping..
screw i.
"

page_text: Figs. 3 and 4 are views of the thick and thin ends of the keys, shewn in Figs. 1
and m, m being holes in which one end of a metal rod is inserted so that the keys
may be pushed forward within the hole and guided into the required position on the
tapered part of the cylinder or barrel e to be then driver home by a hammer and drift
or bar. The backs of the keys 6, I are preferably roughened with raised serrations
inclining towards the mouth of the drill hole in order that they may more firmly
resist the outward pressure upon the cylinder and more securely fasten or "plug" it
in its position at the end of the hole.
Although we have described and shown an arrangement whereby hydraulic power
is the medium we preferably employ for actuating the apparatus it is obvious that a
screw rotated from the outside of the hole against the end of the ram (the tube part
answering as the nut within which the screw rotates) may be adapted to effect the
required forcing out movement of the cylinder.
We would observe that the action of our improved apparatus upon the coal when
the required hydraulic or other pressure is imparted to it differs from the action of
other arrangements of such apparatus heretofore known to us, that is to say, by the
use of our apparatus an outward pressure exerted at or near the back end of the
drill hole thereby forcing the coal out bodily from at or near the back of the hole
whereas in other arrangements the pressure is applied lengthwise of the hole and by
distention of wedges or other expanding devices the coal is thereby forced downwardly
or in a vertical direction, the influence of the pressure being directed at right angles
to the axis of the hole. Now in our arrangement the influence of the pressure is in
the same direction as the hole itself. Thus the coal being forced outwardly from
nearly the furthest extremity of the hole instead of along its length a larger quantity
of coal may be dislodged at each operation.
Our improved apparatus, constructed as above described, is more portable and more
readily handled (being of considerably less weight) and is moreover less complicated
in its parts and cheaper in first cost than other arrangements of such apparatus with
which we are acquainted.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what
we claim is :—
1. For the purpose of breaking or forcing down coal or other minerals in mines and
quarries the use or employment of machinery or apparatus in which pressure from a
hydraulic force pump or other equivalent pressure is conducted through a tube to the
interior of a cylinder and exerted against a ram such cylinder and tube having
previously been securely fastened within a drill hole in the coal or other mineral
substantially as hereinabove described and shewn in the accompanying drawings.
2. The arrangement and combination of parts constituting the improved machinery
or apparatus constructed and operating substantially as described and shewn in the
drawings for the purpose set forth.
Did t
ՐԵՐ
auction 1000
W. LLOYD WISE,
Per J. G. S.,
Applicants' Agent.