Year: 1897

page_text: We, EVAN PARRY, of Cherry Cottage, Carlton, near Barnsley in the county of
York, Colliery Manager, and SAMUEL MILNER, of Carlton Green, Carlton, aforesaid
Mechanic, do hereby declare the nature of this invention to be as follows:-
This invention relates to wedges used in mining operations, the object thereof
being to so combine a wedge and shell and mechanism for moving the wedge within
the shell, that coal or other mineral subsequent to being hauled in the usual way,
may be liberated thereby, without it being necessary to use blows or other similar
percussive means of driving the wedge as is usual; to attain which we employ a shell
composed of two parts having tapered stages, between which fits a wedge having
corresponding tapered stages, and one end of said wedge extends beyond the face of
said shell, and may have a single or multiple thread formed thereon, which passes
through and is screwed into either the boss of a hand-wheel or lever, or said boss
may be in the form of a ratchet, and worked with a pawl and brace, or it may be in
the form of a worm-wheel and worked with a worm operated by a lever; or other well
known mechanism may be employed for working the extended part of wedge in order
to draw it outward so as to press apart the shell for liberating the coal or other
mineral.
In some cases the wedge may be in the form of only one tapered stage, and the
shell would correspond therewith, and may be either operated in the manner
described or it may taper in the reverse direction and be driven by similar mechanism,
but in this latter arrangement a suitable resisting bar, post or other support is
arranged for taking the pressure required.
•
In another modification the ends of the shell parts may be hinged to or bear
against a hydraulic piston working in a cylinder, and the power may be passed
through a horizontal hole formed in the wedge when said cylinder is placed at back
of wedge, or the piston may press direct on to the wedge when situated in front.
Dated this 17th day of April 1897.
We, EVAN PARRY, of Cherry Cottage, Carlton near Barnsley, in the county of
York, Colliery Manager, and SAMUEL MILNER, of Carlton Green, Carlton, aforesaid,
Mechanic, do hereby declare the nature of this invention and in what manner the
Price 8d 1

page_text: same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This invention relates to wedges used in mining operations, the object thereof
being to so combine an improved form of wedge and shell with mechanism for
moving the wedge within the shell that coal or other mineral subsequently to being a
hauled in the usual way, may be liberated thereby, without it being necessary to use
blows or other similar percussive means of driving ordinary wedges as is usual; to
attain which we construct and arrange our improved combined wedge and shell and
operate the same by mechanism substantially in the manner set forth and hereinafter
fully described by the aid of the accompanying sheet of drawings,, in which Fig. 11
is a side view of one form of our improved combined wedge and shell with
mechanism for operating the wedge within the shell, and Fig. 2 is a cross-
sectional elevation on line & a, Fig. 3 a cross-sectional elevation on line b b, and
Fig. 4 a cross-sectional elevation on line c c, of said Fig. 1.
Fig. 5 shows a side view of a modification in the mechanism employed for
operating the wedge within the shell, and Figs. 6 and 7 are front views of further
modifications of mechanism for the same purpose.
Fig. 8 shows our improved combined wedge in position for liberating under
hauled coal or other mineral.
Fig. 9 is a side view of a modified form of our combined wedge and shell.
Fig. 10 is a plan of our combined wedge and shell as arranged to be operated by
hydraulic power, and Fig. 11 is a side view of a further modified form of our
combined wedge and shell shown with shell forced apart or expanded.
Similar letters of reference denote corresponding parts in each view.
The shell D is made in two parts, and both parts may be formed with tapered
stages as shown in Figs. 1 and 8, or one part may have a tapered stage or stages
and the other part parallel as shown at Figs. 9 and 11.
Between said parts of shell D we place a wedge E which has tapered stages or a
tapered stage and parallel part corresponding to the bearing or working surface of
the shell.
The end e¹ of wedge E is coupled to a screw or threaded rod H which passes
through a support or bearing J and enters or is threaded through the boss k¹ of the
hand wheel K as shown at Fig. 1, and the screw H may either have a single or
multiple thread forined thereon.
Instead of a hand wheel K an ordinary lever K2 may be attached to or made
with the boss as shown at Fig. 5, or the boss may be in the form of a ratchet
and be worked by a lever K³ and pawl k as shown at Fig. 6, or the boss may be
in the form of a worm wheel and be worked by a worm k and lever k6 as shown at
Fig. 7.
Or where desired the wedge E may be coupled to the rod H¹ of a hydraulic
cylinder M which may be operated so as to draw outwards the wedge E by means of
a hydraulic hand pump O as will be well understood.
Our improved combined wedge and shell is operated as follows:
After the coal P is hauled in the usual way a hole of the size of the shell D is
drilled into said coal and the combined improved shell and wedge placed therein as
shown at Fig. 8, the mechanism or means of drawing the wedge E outwards so as to
press apart the divided shell D is then operated and the hauled piece of coal or other
mineral P is thereby liberated.
Although we show several means of operating the wedge E so as to press apart the
improved divided shell D we make no claim per se to such mechanism or means,
neither do we lay claim to an ordinary duplicate or multiple wedge, but, having now
particularly described and ascertained the nature of our said invention and in what
manner the same is to be performed, we declare that what we claim is:
1. In wedges used in mining operations the combination of a shell made in two
parts and having tapered stages with a wedge having corresponding tapered stages

page_text: the said wedge being connected to and operated by any well known mechanism or
hydraulic means for drawing it between the two parts of shell substantially as
described and illustrated.
2. In wedges used in mining operations the combination of a shell made in two
parts one part having a tapered stage or stages and the other being parallel, with a
wedge having a corresponding tapered stage or stages and a parallel part substantially
as described.