IMPROVEMENTS IN MACHINERY OR APPARATUS FOR APPLYING DRILLING MACHINES IN WORKING IRONSTONE AND COAL, AND IN TUNNELLING AND QUARRYING
Year: 1878

page_text: LETTERS PATENT to James Chisholm, of Middlesbrough-on-Tees, in the
North Riding of the County of York, Engineer to Bolckow, Vaughan, and
Company, Limited, for the Invention of "IMPROVEMENTS IN MACHINERY OR
APPARATUS FOR APPLYING DRILLING MACHINES IN WORKING IRONSTONE
AND COAL, AND IN TUNNELLING AND QUARRYING."
Sealed the 6th August 1878, and dated the 13th February 1878.
PROVISIONAL SPECIFICATION left by the said James Chisholm at the Office
of the Commissioners of Patents on the 13th February 1878.
JAMES CHISHOLM, of Middlesbrough-on-Tees, in the North Riding of the
County of York, Engineer to Bolckow, Vaughan, and Company, Limited. " IM-
PROVEMENTS IN MACHINERY OR APPARATUS FOR APPLYING DRILLING MACHINES IN
WORKING IRONSTONE AND COAL, AND IN TUNNELLING AND QUARRYING."
My Invention consists in an improved machine constructed and arranged sub-
stantially as herein-after described, which machine will be found convenient and
useful for carrying and applying a drill for drilling coal, ironstone, and other stones.
The drill may be of the kind known as Burleigh's or McKean's, or of any other
suitable construction, my machine being adapted for various constructions of
drill.
There is
employ a suitable carriage whose wheels and gauge may be the same as those
used on mine tubs or trams, so that the carriage will travel in any part of a mine
where the ordinary tub or tram travels. This carriage is furnished with propelling
gear arranged to be operated by hand through a suitable lever or arm.
also a brake, the block of which is arranged to be pressed against the rail surface
by the operation of a screw and hand nut, the latter of which is in a bearing or
bracket at the side of the carriage frame, the hand nut being able to turn but not
to move endwise, whilst the screw carrying the block is able to move endwise when
the nut is turned. There is also a lever brake.

page_text: Upon the carriage is mounted a large nut with a concentric bevel wheel into
which gears a bevel pinion mounted on a horizontal shaft or spindle supported in a
Buitable bearing and provided with a handle for turning it. On the same shaft or
spindle is a ratchet wheel provided with a pawl which works on a pin fixed into
the frame; the said pawl falls into this ratchet wheel.
The nut last above mentioned supports a vertical bar, formed with a corresponding
screw thread. This vertical bar can be moved upward and downward by rotating
the nut. The upper end of the vertical bar is provided with a setting screw
arranged to bear against a suitable roof block. On the vertical bar is mounted a
tubular frame supported by a nut having a bevel wheel which can be operated by a
bevel pinion on a short shaft or spindle carried in a bracket attached to the tubular
frame. On the same shaft or spindle is a ratchet wheel, in connection with which is
a pawl. Thus by turning the short shaft or spindle the vertical portion of the
tubular frame can be adjusted at will.
The tubular frame is constructed to support a horizontal tubular bar formed
with an external screw and fitted with an internal screw worked by a handle
for adjusting the centre pin at the outer end of the said bar for the purpose
of fixing it firmly when in position.
The tubular frame carries a winch for shifting by means of a chain the position
of the horizontal bar on which is a lock nut to secure the bar in position. The
drilling machine of any suitable construction is mounted upon the horizontal bar,
the motive power (which may be compressed air or steam) and water for washing
away the detritus and cooling the cutting tool being supplied through flexible
pipes.
From the foregoing description of the nature of my Invention it will be evident
the construction of my improved machine is extremely simple, so that it can be
easily taken to pieces and put together again by an ordinary miner and boy. The
fixing of it can be effected and the drill be set to work at any required point or
angle in a few minutes by one man and a boy, the arrangements whereby the
different parts are actuated being such that in each case by the simple turning of a
handle the necessary motion is given with the greatest ease and control.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Chisholm in the Great Seal Patent Office on the 13th August
1878.
JAMES CHISHOLM, of Middlesbrough-on-Tees, in the North Riding of the
County of York, Engineer to Bolckow, Vaughan, and Company, Limited.
" IM-
PROVEMENTS IN MACHINERY OR APPARATUS FOR APPLYING DRILLING MACHINES IN
WORKING IRONSTONE AND COAL, AND IN TUNNELLING AND QUARRYING."
My Invention consists in an improved machine constructed and arranged sub-
stantially as herein-after described, and shewn in the accompanying Drawings,
which machine will be found convenient and useful for carrying and applying a
drill for drilling coal, ironstone, and other stones. The drill may be of the kind
known as Burleigh's, or McKean's, or of any other suitable construction, my machine
being adapted for various constructions of drill.
Referring to the Drawings,-
Fig. 1 is a general perspective view of the machine in working position, the scale
being about one inch and a half to the foot.
Fig. 2 is a cross section of bed plate shewing double-acting brakes.
Fig. 3, a longitudinal vertical section, shewing carriage, bed plate, and lifting
gear.
Fig. 4, a plan of bed plate.
Figs. 5, 6, 7, and 8 are details of the arrangement for adjusting the position of
the horizontal bar which carries the drilling machine.
Fig. 9 shews the vertical bar or column, and other parts.
Fig. 10 shews the horizontal bar with internal screw and other parts.
Figs. 2, 3, and 4 are three inches to the foot; Figs. 5 to 10 inclusive are six
inches to the foot.
1 is a carriage of ordinary construction; its wheels and gauge are the same as
those used on nine tubs or trams, so that the carriage will travel in any part of a
mine where the ordinary tub or tram travels. On the carriage is mounted a bed
plate a which carries brake gear and drill supporting and adjusting mechanism, as
herein-after described. The carriage is shewn with propelling gear, consisting of a
spur wheel on one axle of the carriage in gear with a spur pinion 2 on a shaft 2*
mounted on the bed plate a, and operated by hand through a ratchet lever 3. This
gear may however be dispensed with in some cases, as, for instance, in level mines;
4 are double-acting brakes, the blocks of which may be caused to press upward
against and between the carriage wheels, or downward against the rail surfaces,
according to requirement, by the operation of screws 5 and hand nuts 6, the latter
of which are in bearings or brackets 7 at the sides of the bed plate a, the hand nuts
being able to turn but not to move endwise, whilst the screws carrying the blocks
are able to move endwise when the hand nuts are turned; 8 is an ordinary lever
brake. The wheels of the carriage may be connected by a connecting rod in the
usual way.
Upon the bed plate a is mounted a large nut 9 keyed within a recess in a con-
centric bevel wheel 10 into which gears a bevel pinion 11 mounted on a horizontal
shaft or spindle 12 supported in suitable bearings 13 and provided with a handle 14
for turning it. On the same shaft or spindle is a ratchet wheel 15 (formed with
pinion 11) provided with a pawl which works on a pin 17 fixed into the frame;
the said pawl falls into this ratchet wheel.
The nut 9 supports a vertical bar or column 18 formed with a corresponding
screw thread. This vertical bar or column can be moved upward and down-
ward by rotating the nut 9. The upper end of the vertical bar or column 18
is provided with a pivot 19 (or it may be a setting screw) arranged to bear against
a suitable roof block 20. On the vertical bar or column 18 is mounted a tubular
frame or cross head 21 supported by a nut 22 having a bevel wheel 23 which is
operated by a bevel pinion 24 on a short shaft or spindle 25, carried in a bracket 26,

page_text: attached to the tubular frame or cross head 21. On the same shaft or spindle (25)
is a ratchet wheel 27, in connection with which is a pawl 27*. Thus by turning
the short shaft or spindle 25 the vertical position of the tubular frame or cross
head 21 can be adjusted at will; 40 are set screws for fixing the tubular frame or
cross head securely on the vertical bar or column by pressing against the latter,
the key 41.
The tubular frame or cross head 21 is constructed to support a horizontal tubular
bar 29 formed with an external screw, and fitted with an internal screw or
spindle 30 worked by a handle 31 for adjusting the centre point 32 at the outer end
of the said bar for the purpose of fixing it firmly, as required when in position.
The tubular frame or cross head 21 carries a winch 33 for shifting by means of a
chain 34 the position of the horizontal bar 29, on which is a lock nut 35 to secure the
bar in position. The bar is also fixed by set screws 29* in a similar way to that in
which the frame or cross head is secured on the vertical bar or column. The drilling
machine may be of the construction shewn at 36 (Burleigh's), or of any other suit-
able construction; it is mounted upon the horizontal bar 29, the motive power
(which may be compressed air or steam) and water for washing away the detritus
and cooling the cutting tool being supplied through flexible pipes.
From the foregoing description it will be evident the construction of my improved
machine is extremely simple, so that it can be easily taken to pieces and put
together again by an ordinary miner and boy. The fixing of it can be effected and
the drill be set to work at any required point or angle in a few minutes by one man
and a boy, the arrangements whereby the different parts are actuated being such
that in each case by the simple turning of a handle the necessary motion is given
with the greatest ease and control.
Having described the nature of my said Invention and the mode of carrying the
same into practical effect, I desire to have it understood that I do not intend to
claim any of the mechanical parts of the apparatus herein-before shewn and
described, when taken separately and apart from the combination or application
thereof in manner and for the purposes herein described, but what I consider to be
novel and original and therefore claim as secured to me by the herein-before in part
recited Letters Patent is,
1. The combination of parts constituting the improved machine, constructed,
arranged, and operating substantially as herein-before described, and shewn in the
accompanying Drawings, for applying drilling machines in working ironstone and
coal in tunnelling and quarrying.
2. The arrangement described and shewn for adjusting the position of the tubular
bar 29 vertically, longitudinally, and radially.
In witness whereof, I, the said James Chisholm, have hereunto set my hand
and seal, this Tenth day of August, in the year of our Lord One thousand..
eight hundred and seventy-eight.
JAMES CHISHOLM. (L.S.)