Certain Improvements in Coal Drilling Machines and the like.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Certain Improvements in Coal Drilling Machines and the like.
We, THOMAS HILL, of 98, High Street, Old Hill, in the County of Stafford,
Collier, and WILLIAM PARTRIDGE, of 97, Old Hill aforesaid, Blacksmith, do
hereby declare the nature of this invention to be as follows:-
This invention consists of the hereindescribed improvements in machines for
drilling holes in coal and in those rocks in which a hole can be bored without a
percussive action.
A coal drilling or like machine embodying our invention is so constructed that
it can very readily be fixed in position and supported from the face of the coal
or rock without a prop and the hole can be drilled in the said face or in the roof
or floor as required and as no prop is necessary our machine can be used in thick
seams as well as in thin ones.
Our invention is carried out as follows:-We provide a stout metal stay rod
which is somewhat pointed at one end and is say about three. feet long more
or less or is of other convenient length and which is adapted to be driven into a
hole previously bored for a short distance in the face of the coal or rock so that
the stay rod projects outwardly therefrom. Near the outer end of the said stay
rod we provide a forked piece standing out at about right angles from the stay rod
and made with a shank which fits in and can turn in a hole in the stay rod.
Between this fork is a screw threaded nut made with side pegs which take into
holes in the fork and through this nut passes a screw somewhat shorter than the
stay rod and made with a fine thread to engage with the nut. The ends of this
screw are squared or otherwise formed so that either of them will engage with the
back end of an augur like drill for drilling the coal and also with a brace or handle
or handwheel or the like for turning the screw and augur. The brace we prefer
to use and which forms one part of this invention is somewhat like an ordinary
blacksmith's brace but instead of the head or knob being fixed as usual to the
top of the race to remain stationary while the brace is turned we arrange the said
head or knob on a sliding extension piece which is fixed to the brace by a loop
and set screw so that the extension piece can be slided out at right angles to the
axis of the brace and in the opposite direction to the usual crank thus forming
another crank to the brace and enabling the brace to be turned by both hands
so that more power is obtained with this two throw brace than is possible with
a single throw brace of the usual kind.
The machine above described is used as follows:-A hole is first drilled in the
face of the coal by any convenient means as by a small bit in the said brace used
in the ordinary way as a hand brace. The said stay rod is then driven into this
hole so as to project from the face of the coal. A twisted boring bit or other
boring tool is then engaged with that end of the said screw which is nearer to
the coal and placed in position with the fore end of the bit against the face of
the coal. The said brace is then engaged on the outer end of the screw and the
screw with the boring bit are turned, the said screw working through the nut
and putting on the necessary feed so that the boring bit works into the coal to

page_text: •
the required distance the said stay rod taking the backward thrust on the screw.
Thus the machine is kept in position until the hole has been drilled to the required
depth.
By the nut being mounted and adapted to turn on and with the fork as above
described the screw and nut and boring bit can be turned and used at any required
angle with the stay rod.
After the screw has been screwed forward through the nut in boring one hole
as above described the nut and screw can be turned round end for end ready for
use again with a longer bit in the same hole or with the same bit in another hole
so that it is not necessary to run the screw back through the nut which would
cause a loss of time.
Our invention is similarly used for boring holes in the roof or in the floor
and as the machine can so quickly be fixed in position and be so readily used the
holes can be bored very quickly.
T
11 0011.
1000
CHARLES BOSWORTH KETLEY,
Agent for the Applicants,
Certain Improvements in Coal Drilling Machines and the like.
We, THOMAS HILL, of 98, High Street, Old Hill, in the County of Stafford,
Collier, and WILLIAM PARTRIDGE, of 97, Old Hill aforesaid, Blacksmith, 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 consists of the hereindescribed improvements in machines for
drilling holes in coal and in those rocks in which a hole can be bored without a
percussive action.
A coal drilling or like machine embodying our invention is so constructed that
it can very readily be fixed in position and supported from the face of the coal
or rock without a prop and the hole can be drilled in the said face or in the roof
or floor as required and as no prop is necessary our machine can be used in thick
seams as well as in thin ones.
Our invention is carried out as we will describe by referring to the accompany-
ing drawings on which Fig. 1 is a side elevation of a coal drilling machine con-
structed in accordance with this invention represented in operation; Fig. 2 is
a plan of the same; Fig. 3 is a sectional end view on line X X of Fig. 1;
Fig. 4 shews parts of the said machine to illustrate how after a hole has been
drilled with a short drill the machine can be altered to operate a longer drill
in the same hole.
The same letters of reference indicate the same parts in all the figures of the
drawing.
In carrying out this invention we provide a stout metal stay rod A which is
somewhat pointed at one end a¹ and is about two feet four inches long more or
less (but we do not confine ourselves to any particular length) and this is adapted
to be driven into a hole such as b which has been previously bored for a short
distance in the face of the coal B so that as shewn in Figs. 1 and 4 the stay rod A
projects outwardly therefrom. Near the outer end a² of the stay rod we provide
a fork piece C standing out at about right angles from the stay rod A and made
with a shank c¹ which fits in and can turn in a hole a³ in the stay rod A and is there

page_text: secured as by the cotter d in the projecting end of the shank c¹. This fork C
embraces the screw threaded nut E made with side pegs e¹ e2 which take into holes
in the fork C and through this nut E passes a screw F made somewhat shorter
than the stay rod A and made with a fine screw thread to engage with the socket
like back end g¹ of an auger like drill G for drilling the coal and also with a
socket like part h' of the hand brace H for turning the same and auger G. Instead
of the hand brace H a handle or a hand wheel may be made to take upon the end
of the screw F for turning the same. We prefer, however, to use a brace con-
structed as represented in Figs. 1 and 2 which forms one part of this invention.
This brace is somewhat like an ordinary blacksmith's brace but instead of the
head or knob I being fixed as usual to the top 2 of the brace H to remain station-
ary while the brace is turned we arrange the said head or knob I to turn on a sliding
extension piece J which is fixed to the brace H by the top part of the brace H
being made as a loop h² through which the part J will slide and in which the
extension piece J can be fixed by the set screw j¹. The extension piece J can
thus be slided out at right angles to the axes of the brace and in the opposite
direction to the usual crank part H and thus form another crank to the brace
and enable the brace to be turned with both hands so that more power can be
obtained with this two throw brace than is possible with a single throw brace of
the usual kind. It is to be understood, however, that a single throw brace may
be used with the other parts of our invention if desired.
The machine above described is used as follows:-The hole b is first drilled in
the face of the coal by any convenient means as by a small bit of the usual kind
in the brace A with the extension piece J slided back so that the brace will act
like an ordinary hand brace. The stay rod A is then driven into this hole b
so as to project from the face of the coal as shewn in Figs. 1 and 2. The twisted
boring bit G or other suitable boring bit is then engaged with the end of the
screw F which is nearer to the coal and placed in position with the fore end g²
of the boring tool G against the face of the coal. The brace H is then connected
to the outer end 2 of the screw F and the said screw F with the boring tool G
are turned so that the screw F will work through the nut E and put on the neces-
sary feed as the boring bit G bores into the coal to the required distance the stay
rod A meanwhile taking the backward thrust on the same. Thus the machine
is kept in position until the whole has been drilled by the boring tool G to the
required depth and it will be found that the back pressure on the screw F, although
considerable, does not force the stay A out of the hole b.
By the nut E being mounted and adapted to turn on and with the fork C as
above described the screw F and nut E and boring bit G can be turned and used
at any required angle with the stay rod.
After the screw F has been screwed forward through the nut E in boring one
hole such as as deep as the length of the boring tool G will allow the nut E
and screw F can be turned round end for end, as represented in Fig. 4 bringing
the end of the screw ready for use again to connect to a longer boring tool in
the same hole or with the same bit G in another hole by the side of the hole .
Thus it is not necessary to run the screw F back through the nut E which would
cause loss of time.
Our invention is similarly used for boring holes in the floor or in the roof and
as the machine can so quickly be fixed in position and be so readily used the holes
can be bored very quickly.
The accompanying drawing illustrates what we consider to be the best method
of carrying our said invention into practice but it is to be understood that our
invention is not limited to the precise details shewn.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:
1. A coal drilling or like machine consisting essentially of the following nonta

page_text: namely, a stay rod adapted to be driven into a hole in the face of the coal or rock,
a swivelling nut carried by and at one side of the stay rod, a screw working through
said nut and means for turning the screw so as to turn and feed forward the boring
tool connected to the fore end of said screw, the parts being constructed and
arranged substantially as described.
2. In a coal drilling or like machine the combination of the stay rod A adapted
to be driven into a hole in the face of the coal or rock, the swivelling nut E car-
ried by and at one side of said stay rod by the fork C, the screw F working through
said nut, the boring tool G connected to one end of said screw and means for
turning the screw at the other end said parts being constructed and arranged sub-
stantially as herein before described and illustrated by the accompanying drawings.
3. The combination with the screw of a coal drilling or like machine of the
kind denoted under Claims 1 and 2, of the hand brace H made with the extension
piece J and knob I so as to enable the brace to be worked by both hands when
desired the parts being arranged substantially as herein before described and illus-
trated by the accompanying drawings.
4. In a coal drilling or like machine of the kind denoted under Claims 1 and 2
the screw F made with both its ends f¹ f alike so that either end will connect
to the brace or turning device or to the boring tool and thus enable the screw
to be reversed end for end when desired, substantially as set forth.
Dated this 30th day of August 1898.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.