Improved Apparatus for Use in Drilling Hard Substances, such as Rock.
Year: 1895

page_text: Date of Application, 5th Apr., 1895
Complete Specification Left, 29th Nov., 1895-Accepted, 4th Jan., 1896
;
· PROVISIONAL SPECIFICATION.
Improved Apparatus for Use in Drilling Hard Substances, such
as Rock.
I, WILLIAM HALL, of No. 1 Gurney Terrace, New Marske, Marske-by-the-
Sea, Enginewright, do hereby declare the nature of this invention to be as
follows:-
The object of my invention is the production of apparatus suitable for drilling
rock and the like and which shall be simple in construction light portable and easy
to manipulate.
:
According to my invention the frame that carries the drill shaft or spindle and
its driving gear is formed with a pivot that enters an eye at one end of a bar or
frame (hereinafter called the radial bar) which eye has both its ends alike so that
either will receive the pivot the other end of the radial bar is hinged or jointed
to a clamp adapted to be secured to a bar such as a round steel wedge bar which
being driven into the rock will support the apparatus. The axis about which the
radial bar is adapted to turn will be at right angles or approximately so to that of
the bar to which it is clamped. Around the hinge pin there are formed through
it and through those parts of the clamp piece to which it is jointed holes to receive
a suitable pin for securing the radial har at the angle from time to time desired.
The drill operating mechanism comprises in addition to the frame before mentioned
a shaft or spindle formed with a socket to receive the drill and with a screw thread,
a divided nut for advancing the drill, a double cam by the movement of which in
one direction the parts of the divided nut can be simultaneously moved clear of the
screw to permit of rapid return of the drill shaft or spindle into position for
commencing a fresh advance and by the reverse movement of which the parts of
the nut can be simultaneously returned to the screw in readiness for causing its
advance and which according to one form is a pivoted bridle formed at its
respective sides with curved slots eccentric to the axis about which the bridle is
adapted to turn and which slots receive projections extending laterally from the
respective halves of the divided nut and a spring catch arranged to secure the
bridle in its extreme positions.
The drill shaft or spindle is rotated through bevel gear adapted to be actuated
by hand or other power a slot and feather being provided to cause the drill
shaft or spindle to rotate with the bevel wheel through which it passes. This
wheel inay be held in place end ways by a set screw and may advantageously
be placed behind the driving wheel in order to reduce friction.
By means of the radial arm as described the drilling mechanism can be placed
in position to the right or to the left of the said arm according to the position
in which it is desired to drill without disconnecting the radial arm; it furthermore
enables the drill to be put to any angle required so that workings first turning
away can be operated upon without the aid of the ordinary jumper drill or of
other apparatus and more than one hole can be drilled with a single setting of the
radial bar and wedge bar that supports it.
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1
A
1005

page_text: COMPLETE SPECIFICATION.
Improved Apparatus for Use in Drilling Hard Substances,
as Rock.
such
I, WILLIAM HALL, of No. 11 Gurney Terrace, New Marske, Marske-by-the-
Sea, Enginewright, 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:-
The object of my invention is the production of apparatus suitable for drilling
rock and the like, which shall be simple in construction, light, portable, and easy
to manipulate.
And in order that the nature of my invention may be readily understood I will
now describe the same with the aid of the accompanying drawings, wherein
Fig. 1 is a plan, partly in horizontal section, and Fig. 2 a side elevation, showing
an arrangement of apparatus according thereto.
Fig. 3 is a cross section on the line of Fig. 1, but to a larger scale than
that figure, showing a frame forming part of such apparatus, and a device for
opening and closing the divided nut.
Fig. 4 is a sectional plan;
Fig. 5 a side elevation; and
Fig. 6 an enlarged end view, showing part of a frame with a modified con-
struction of double cam for operating the parts of the divided nut.
Fig. 7 is a view of a supporting bar for carrying the apparatus.
Figs. 8 and 9 are detail views hereinafter referred to.
According to my invention, the frame 1 that carries the drill shaft or spindle 2
and its driving gear is formed with a pivot 3 that enters an eye 4 at one end of a
bar or frame 5 (hereinafter called the radial bar), the eye 4 having both its ends
alike so that either will receive the pivot 3. The other end of the radial bar 5 is
hinged or jointed-for example, by means of a screwed pin 6-to a clamp 7 adapted
to be secured, (by means of a set screw 7 or other suitable means) to a bar such,
for example, as the round-steel wedge-bar 8 represented in Fig, 7 which, being
driven into the rock, will support the apparatus. The axis about which the radial
bar 5 is adapted to turn, is at right-angles, or approximately so, to that of the
bar 8 to which it is clamped. Around the hinge-pin 6 there are formed through
the radial bar 5, and through the corresponding parts of the clamp 7 to which it is
jointed, holes 9 to receive a suitable pin 10 for securing the radial bar at the angle
(relative to the clamp 7) from time to time desired.
The drill-operating mechanism comprises, in addition to the frame 1 and the
shaft or spindle 2, which is formed with a socket 11 to receive the drill 11* and
with a screw-thread, a divided nut 12, 12° for advancing the drill, and a double
cam by the movement of which in one direction the parts 12" and 12° of the
divided nut can be simultaneously moved clear of the screw-thread on the shaft or
spindle 2 to permit of rapid return of the said shaft or spindle by hand into position
for commencing a fresh advance, and by the reverse movement of which the parts
of the nut can be simultaneously returned to the said screw-thread in readiness for
causing its advance. In the arrangement shown for this purpose in Figs. 1, 2 and 3,
the double cam comprises a pivoted bridle 13 formed at its respective sides with
curved slots 13", 13" that are eccentric to the axis 13 about which the bridle
is adapted to turn and which receive projections 12°, 12d extending outwardly
from the respective halves 12* 12 of the divided nut. 14 is a spring catch fixed
to the bridle and provided with a pin or projection 14* adapted to enter one or
other of two holes in the frame 1 and so secure the bridle in one or other of its
extreme positions. 13* is a pin to limit the extent of turning movement of the
bridle in each direction.

page_text: In the modified arrangement shown in Figs. 4, 5, and 6, which is the one I
prefer in practice, the double cam comprises two helically arranged parts 13"
and 13, which are right and left handed respectively and together with a handle_14,
are fitted on a spindle 15 which is shown as a bolt mounted in the frame 1. The
helically arranged edges of the parts 13 and 13 engage in suitable grooves 12*
formed in lugs 12, 12 projecting from the parts 12" and 12 respectively of the
out, so that by partly rotating the spindle 15 in one or other direction by means of
the handle 14, the nut will be opened or closed. 16 is a thumb nut screwed
on one end of the spindle 15. From toy the spindle 15 is of the cross section.
shown in Fig. 8, and from y toz of that shown in Fig. 9, so that by tightening up.
the said thumb nut. the double cam 130, 13b can be clamped, when desired, to the
frame 1 so as to hold the parts 12", 12" of the nut in either their open or closed
position.
The drill shaft or screw spindle 2 in each case is rotated through bevel-gear 17, 18
adapted to be actuated by hand or other power. In the example shown, the
bevel pinion 17 is mounted to rotate on a pin 19 fixed to the frame, and is
provided with a squared boss 17ª to receive a correspondingly formed boss of a
crank handle 17° (Fig. 3). The said drill shaft or spindle is provided with a
slot 2 and a fenther connected with the bevel wheel 18 so that it will rotate.
with such wheel through which it passes when the divided nut is in gear
with it. The wheel 18, which is provided with a boss 18 by which it is journalled
in the frame 1, may be held in place endways by a set-screw 19* entering a groove
in the wheel boss (Figs. 1 and 2) and may advantageously be placed behind the
driving wheel 17 (as shown) in order to reduce friction.
By means of the radial arm 5 and the pivot 3, of which there may be one on
each side of the frame 1 as shown, the drilling mechanism can be placed in
position to the right or to the left of the said arm, as well as above it, according
to the position in which it is desired to drill, without disconnecting the radial
arm from the supporting bar 8. The radial arm also enables the drill to be.
put to any angle required so that workings where they turn away at an angle.
to the part already excavated, can be operated upon without the aid of the
ordinary jumper drill or of other apparatus, and more than one hole can be drilled
with a single setting of the radial bar and wedge-bar that supports it.
Having now particularly described and ascertained the nature of the said inven-.
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
1. Apparatus for use in drilling hard substances, such as rock, comprising (a)
a frame carrying the drill shaft or spindle and its driving gear (b) a radial bar
or frame these being so constructed that the first mentioned frame can be pivoted
at will to either of two opposite sides of the forward end of the radial bar or
frame; and (c) a clamp adapted to be secured to a supporting bar and to which
the rear end of the radial bar or frame is hinged or jointed in such a manner
that it can be turned to and secured at the angle from time to time desired with
relation to the clamp, substantially as herein described.
2. The combination of parts constituting my improved apparatus for use in
drilling hard substances such as rock, constructed, arranged and operating
substantially as hereinbefore described with reference to and shown in Figs. 1, 2,.
and 3, or modified according to Figs. 4, 5, and 6 of the accompanying drawings.
Dated this 26th day of November 1895.
W. Lloyd Wise,
WILLIAM HALL.
46 Lincoln's Inn Fields, London, W.C., Agent for the Applicant..