Improvements in Wedges used in Coal Getting.
Year: 1899

page_text: Date of Application, 21st Dec., 1899
1000
PROVISIONAL SPECIFICATION.
Improvements in Wedges used in Coal Getting.
I, JOHN SUGDEN, of 12, Saint Marks Terrace, Old Mill, Barnsley, in the
County of York, Coal Miner, do hereby declare the nature of this invention
to be as follows:-
My present invention relates to wedges used in getting coal, such for instance
as are placed in circular holes previously drilled into the coal and subsequent
to the cutting or under holing of the coal, and by the use of said wedges the
piece of coal so under holed is broken up and can be filled into corves; and the
object of my invention is to arrange and construct a wedge which will more
readily and effectively fulfil its function than is possible with wedges as hitherto
constructed: to attain which, I arrange a piece of steel partly cylindrical form
in cross section and which has a hole or passage running from its face end to
near its back end, and this hole is situated near the lower part of said partly
cylindrical piece of steel. Vertically extending from said horizontal hole and
at suitable distances apart are apertures which extend to vertical cylindrical
holes similarly situated at suitable distances apart and these vertical holes or
cylinders extend to upper or flat part of said partly cylindrical piece of steel.
A piece of steel of the same length as the partly cylindrical piece aforesaid
and segmental in cross section is arranged so that when placed on the partly
cylindrical piece makes a complete cylindrical wedge, and said upper piece of
steel has its under flat part arranged with a series of pistons or plungers which
correspond to the positions of the vertical cylinders aforesaid and fit therein
in a perfectly water or oil-tight manner.
The front end of partly cylindrical piece of steel receives a flange whereby
the horizontal hole can be coupled to a hydraulic or oil pressure pump by means
of an intermediate connection having a tap or valve for the escape of pressure
when required.
The wedge is placed in closed form into the hole in coal for its reception,
then the oil or water is pumped so as to cause the upper part of wedge to press
away from lower part and so to break up the coal.
1000
Daten UITS 5147
H. F. BROUGHTON,
Patent Agent,
114, Chancery Lane, London, W.C.
COMPLETE SPECIFICATION.

page_text: and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:→
My present invention relates to wedges or the like tools used in getting coal
such for instance as are placed in circular holes previously drilled into the face
of coal and subsequent to the cutting or under-holing of the coal, and by the
use of said wedges or tools the piece of coal so 'underholed is broken up and
can then be quickly filled into corves for transit to pit, mouth or surface, and
the object of my invention herein is to arrange and construct a wedge or tool
which will more readily and effectively fulfil its function than is possible wedges
as hitherto constructed!' to attain which-'I construct and arrange my said im-
proved wedge or tool and work the same substantially in the manner described
by the aid of the accompanying drawings in which:
Fig. 1 is an isometric perspective view of my improved wedge or tool complete
with pump and connections for operating the same and shown extended within a
hole drilled in a under-holed piece of coal down a mine. and having by its
action fractured or broken such piece of coal and
Fig. 2 is a longitudinal sectional elevation of my improved wedge "per se
closed and ready to be placed in hole drilled in the coal face.
Similar, letters of reference denote corresponding parts in each view.
"
I arrange a piece of steel A partly cylindrical in form in cross section, and
which has a passage or hole b running from its face or front end c to near its
back end, and the said hole b is situated near the lower part of said partly
cylindrical piece of steel A.
Vertically extending from said horizontal hole band at suitable distances
apart are any number of apertures which extend to vertical cylindrical holes
or cylinders E, which may be formed in the solid of the piece A, or may be
cylindrically lined, or cylinders pressed into said holes, and similarly situated
to the apertures before described, and said vertical holes or cylinders, "E, extend
to upper flat part a¹ of said partly cylindrical piece of steel A. A piece of
steel, H, of the same length as the partly cylindrical piece, A, aforesaid, and
segmental in cross section, that is of a shape in cross section so that when closed
on the upper flat part of the piece A, it forms when in such combination a com-
plete circle in cross section, or a complete cylindrical piece of steel or wedge or
tool and said upper piece of steel, H, has its under flat part arranged with a
series of pistons or plungers P, which may be made therewith, or attached
thereto, and which correspond in situations to the positions of the vertical
cylinders E, aforesaid, and fit therein, in a perfectly oil or water tight manner.
The front end c of the partly cylindrical piece of steel, A, has a flange a² made with
or secured to it by which means the horizontal hole 6 can be coupled up to and
connected with an oil force or hydraulic pump, .M, by means of a connecting
pipe m arranged with an exhaust tap m².
The pump, M, has the usual plunger m³ and working lever m², an ordinary
branch with flexible supply tube me and oil or other pocket bottle or can m³.
The said pump. can, and connections being made as light and small as possible
so as to be perfectly portable and easily carried by the collier to and from his
work as will be well understood from the drawings.
My said improved wedge or tool is placed when in closed form (see Fig. 2)
into the hole, K, bored or drilled in face of coal Q for its reception, and the
pump M and connections are made complete and the oil or water is then pumped
and forced thereby into passage or horizontal hole 6 through the apertures d so
forcing up the series of pistons P and pressing the steel part or piece H, up
from the part or piece A, or vice versa, until the coal Q becomes fractured cracked
or broken up. The exhaust tap m² is then opened when the wedge or tool par-
takes to a closed position and can be removed, and will be ready for further
action as will be well understood,

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
1. In a wedge or tool for forcing down or breaking up coal previously drilled
for the reception of said wedge or tool, the combination of a partly cylindrical
piece of steel or other metal having a number or series of vertical cylinders or
cylindrical holes formed therein, with a piece of steel segmental in cross section,
and having made with or fixed to underside of same a series of plungers or
pistons to fit in the vertical holes or cylinders aforesaid, which latter com-
municate by means of apertures to a horizontal passage formed in lower partly
cylindrical piece of steel and which passage may be coupled up to an oil, force,
or hydraulic pump substantially as described and illustrated in the accompanying
drawings.
2. A tool for breaking down underholed coal within a coal mine consisting of
two partly cylindrical or segmental pieces of metal or steel of suitable length
one said piece containing or having vertical cylinders and the other correspond-
ing plungers or pistons to fit and work therein with passage and apertures
whereby fluid power may be forced so as to press one piece of steel or metal
away from the other substantially as described.
Dated this 17th day of August 1900
H. F. BROUGHTON,
Registered Patent Agent,
114, Chancery Lane, London.