Improvements in Rock Drills.
Year: 1890

page_text: Date of Application, 21st July, 1890
Complete Specification Left, 20th Apr., 1891-Accepted, 23rd May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Rock Drills.
We, THOMAS HUGH BELL, of Middlesborough, in the County of York, Iron
Master, ADDISON LANGHORN STEAVENSON, of Holywell Hall, near the City of
Durham, Mining Engineer, and ROBERT CLOUGH, of Page Bank Colliery,
Willington, in the County of Durham, Engineer, do hereby declare the nature of
this invention to be as follows:-
This invention relates especially to rock drills such as are described in the
Specifications of our former Patents No. 9985 in the year 1885 and Nos. 2928
and 18916 in the year 1888.
We now construct such drills in the manner shown by the drawings annexed.
Figure 1 shows a drill to be driven by a running rope.
Figure 2 shows a drill driven by a petroleum engine.
The drilling mechanisin is not shown in this figure; it is similar to that repre-
sented in Figure 1.
The reference letters in Figure 1 indicate
A. Wrought iron bogie provided with brake gear and arrangement for working
it to and from the working places.
B. Cast iron footstep fixed on the bogie top.
C. Hollow bar, on one end of which is fixed the drilling attachment.
D. Worm and sector for turning hollow bar round.
E. Wrought iron strap going round footstep B.
F. Double eye taking hold of the strap E at one end, and the hollow bar at
the other.
G. Ratchet with square top thread for tightening the strap E to footstep B.
H. Pulley for driving the belt to the pulley on the boring bar I.
I. Pulley on boring bar, which can be worked by the rope Y direct on to I.
J. Friction clutch on H for giving motion to drill.
K. Lever for working friction clutch.
L. Pulley transmitting power to the pulley H.
M. Standard with screw and handle for lowering and raising the drill bar up
and down to its proper angle, with a circular base plate with two pulleys carrying
the same.
N. Circular plate fixed at the end of the hollow bar.
O. Circular ring with flanges fit on to circular plate.
P. Circular plate working within the flange plate N, and on to which the drill
and gearing is fixed, provided with a set screw for fixing it.
Q. Boring bar with keyway cut the full length, driven by two pinions from the
pulley I.
R. Universal joint.
S. Drill.
T. Rod and ratchet for tightening the belt.
U. Guide pulley, leading the belt to and from I.
V. Hand wheel for brake.
W. Hand wheel for moving bogie.
✗. Driving rope to drill.
Y Rone leading to engine.

page_text: CARPMAEL & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in Rock Drills.
We, THOMAS HUGH BELL, of Middlesborough, in the County of York, Iron
Master, ADDISON LANGHORN STEAVENSON, of Holywell Hall, near the City
of Durham, Mining Engineer, and ROBERT CLOUGH, of Page Bank Colliery,
Willington, in the County of Durham, Engineer, 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 relates especially to rock drills such as are described in the
Specifications of our former Patents No. 9985 in the year 1885 and Nos. 2928 and
18916 in the year 1888.
We now construct such drills in the manner shown by the drawings annexed.
Figures and 14 show a side elevation of a drill to be driven by a running rope.
Figures 2 and 24 show a plan of the same.
Figure 3 shows an end elevation.
Figures 4 and 44 show a side elevation of a drill to be driven by a petroleum
engine.
Figures 5 and 54 show a plan of the same.
Figure 6 shows an end elevation.
The reference letters in Figures 1, 14 2, 24 and 3 indicate.
A. Wrought iron bogie provided with brake gear and arrangement for working
it to and from the working places.
B. Cast iron footstep fixed on the bogie top.
C. Hollow bar, on one end of which is fixed the drilling attachment.
D. Worm and sector for turning hollow bar round.
E. Wrought iron strap going round footstep B.
F.. Double eye taking hold of the strap E at one end, and the hollow bar at the
other.
G. Ratchet with square top thread for tightening the strap E to footstep.B.
H. Pulley for driving the belt to the pulley I on the boring bar.
1. Pulley on boring bar, which can be worked by the rope Y direct on-to-I..

page_text: J. Friction clutch on H for giving motion to drill.
K. Lever for working friction clutch.
L. Pulley transmitting power to the pulley H.
M. Standard with screw and handle for lowering and raising the drill bar up and
down to its proper angle, with a circular base plate with two pulleys carrying
the same.
N. Circular plate fixed at the end of the hollow bar.
O. Circular ring with flanges fit on to circular plate.
P. Circular plate working within the flange plate N, and on to which the drill
and gearing is fixed, provided with a set screw for fixing it.
Q. Boring bar with keyway cut the full length, driven by two pinions from the
pulley T.
R. Universal joint.
S. Drill.
T. Rod and ratchet for tightening the belt.
U. Guide pulley, leading the belt to and from I.
V. Hand wheel for brake.
W. Hand wheel for moving bogie.
✗. Driving rope to drill.
Y. Rope leading to engine.
7. Split nut.
The reference letters in Figures 4, 44, 5, 5 and 6 indicate :-
A. Wrought iron girder bogie.
B. Cylinder for petroleum engine, giving motion to the drills, and traversing the
engine from place to place.
C. Crank shaft.
D. Fly wheel.
E. Circular footstep, for to revolve the engine, and drills, round on the bogie.
F. Belt sheave for driving the drill.
G. Standard with screw and handle for lowering and raising the drill bar up and
down to its proper angle.
H. Hollow bar on one end, to which is fixed the drilling attachment.
I. Worm and sector for turning the hollow bar round.
J. Lever and clutch for traversing the machine.
K. Circular plate fixed at the end of the hollow bar.
L. Ring with flanging fitted on to the circular plate.
M. Another circular plate working within the flange plate K.
N. Belt wheels for giving motion to the drill.
P. Split nut with arrangement for opening by hand for the purpose of drawing
the drill back.
Q. boring bar.
R. Universal joint.
S. Drill.
T. Bevilled wheel for traversing the machine.
U. Single eye secured on C.
V. Set screw for securing the foot step E.
W. Clutch for driving the wheel F giving motion to drill.
X. Lever to alter the direction of locomotion.
Y. Lever for working the clutch W.
Z. Circulating pump.
1. Water tank.
2. Battery.
3. Receiver for petroleum.
4. Belt wheels driving traction gear or two and one chain.
5. Guide pulleys leading the rope to N.
6. Rod and ratchet for tightening the belt.

page_text: Having now particularly described and ascertained the nature of our said mive
tion and in what manner the same is to be performed we declare that what we
claim is :-
:-
Rock drills substantially as described and represented by the annexed drawings.
1001
T. HUGH BELL.
A. L. STEAVENSON.
R. CLOUGH.