IMPROVEMENTS IN MACHINES FOR DRILLING ROCK COAL & OTHER MATERIALS
Year: 1885

page_text: I, GEORGE WILLIAM ELLIOTT of N° 12 Clarkehouse Road, Sheffield, York"
Mining & Mechanical Engineer do hereby declare the nature of my invention for
IMPROVEMENTS IN MACHINES FOR DRILLING ROCK COAL & OTHER MATERIALS, to
be as follows:-
Part of this invention relates to improvements in that class of Drilling Machines
generally known as Ratchett Braces & used for drilling. Rock, Coal, & other
materials, and consists of applying break power to that part of the machine which
carries the nut, or to the nut itself, or the main screw end; so that the 'feed of such
machines is rendered adjustable to suit the material to be drilled, and when
adjusted, automatic, so long as the same material is being drilled.
Another part of this invention relates to the mode of applying break power to a
toothed wheel working in connection with a screw, so as to form an automatic and
adjustable feed for drilling machines.
'
This is accomplished by making the body of the machine which carries the
screw and toothed wheel, capable of being closed upon a forming a break upon the
toothed wheel to prevent it revolving until the required pressure upon the screw
and drill is attained.
The body part is also formed in such a manner that it can be attached to the
standard, used to fix the machine in position for use, by means of a hook formed
on the body to hook it upon a pin or bolt passing through the standard, or by the
pin or bolt passing through a hole in the body as well as through the standard.
Projections may also be formed upon the body to fit into notches in the standard.
Another part of this invention refers to the mode of attaching drilling machines
to the wood props used in mines so as to utilise them as standards.
This is effected by making a peg to fix into the wood prop and forming the nut
of the machine with two hooks, back to back, capable of being readily hooked on
the peg.
'
This arrangement of hooks on the nut is also applicable to machines with
standards.
I'
The peg may also be made with a head to receive two projections on the nut.

page_text: I, GEORGE WILLIAM ELLIOTT of 12 Clarkehouse Road Sheffield, in the County
of Yorkshire, Mining and Mechanical Engineer do hereby declare the nature of my
invention for IMPROVEMENTS IN MACHINES FOR DRILLING ROCK, COAL, AND OTHER
MATERIALS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
In order that the manner of carrying out this invention may be clearly under-
stood, I annex one sheet of drawings in which like letters refer to like parts in
each figure.
Figures 1. 2. 3 are side elevations showing an arrangement for applying break
power to a toothed wheel, gearing into a screw, by tightening the bearings formed
in the casing for the wheel, upon the wheel, and thus forming an adjustable and
automatic feed for drilling machines.
Figure 4 is a sectional end elevation of figures 1. 2. Figure 6 is a side elevation
of another arrangement for applying break power to the toothed wheel, by closing
the casing of the wheel upon the sides of the wheel.
Figure 7. is a sectional end elevation of figure 6. Figure 5. is a sectional elevation
of Figure 3.
Figure 8 is a side elevation of a ratchet drilling machine, showing the mode of
applying break power by means of a clamp u to the part carrying the nut for the
main screw.
Figure 9, is an end view of the clamp u shown on figure 8.
Figure 10 is a side elevation of a ratchet drilling machine, showing the mode of
applying break power to the main screw by means of a clamp y.
Figure 11 is an end elevation of the clamp y. shown in figure 10.
Figure 12 is a side elevation of the nut for the main screw, and peg, for a rock
& coal drill arranged for attachment to the ordinary props used in mines.
Figure 13, is an end view of figure 12.
Figure 14 is a side elevation showing another way of making the screw peg for
attaching the drill to the ordinary props used in mines.
Figure 15. is an end view of figure 14.
Figure 16 is a plan of the peg shown in figures 14. 15.
In figures 1 to 7 a. is the main screw. b the guide for main screw, & also forming
part of the casing and bearing for the toothed wheel w. a. is the other part of the
casing and bearing for the toothed wheel w. The two parts are hinged together
at. d. and secured by a screw with a handle. h. by which the casing and
bearing. b. c. for the toothed wheel. w. can be tightened on the bearings of the
toothed wheel. w. to give the required resistance to prevent the toothed wheel. w,
from revolving, and thus cause the main screw a-when turned by a handle, to
push the drill into the material to be drilled, the pressure on the drill being
regulated by the resistance put upon the wheel, w. to prevent it revolving,

page_text: The machine is attached to the standard by means of a pin or bolt passing
through the standard and the hole. f. in figure 1. or hook. g in figure. 2. or by the
projections, & e. in figures 3. 5. 6. 7. dropping into notches on the standard.
In figures 6. 7. the casing b. c. of the wheel. w. is capable of being closed side-
ways on the wheel. w. by means of the bolt and handle. l. to give the necessary
resistance to prevent the toothed wheel. w-revolving.
Figure 8. represents a ratchet drilling machine fitted with a clamp. u, which
does not revolve, and by means of which the nut on the main screw is prevented
from revolving until the desired pressure on the drill is attained, and is sufficient
to overcome the resistance of the clamp. u. and thus a constant pressure is kept
upon the drill, and the clamp. u-when once adjusted, renders the feed automatic.
Figure 10 represents the clamp. u. applied to the screw of a ratchet drilling
machine instead of to that part carrying the nut.
Figures 12. 13 show the nut j. of the main screw. n. of a drilling machine
arranged with a double hook. m. m. to hook upon a peg. k. which is pointed and
screwed so as to be capable of being screwed into an ordinary wood prop used in
mines, and thus utilise the prop for a standard.
Figures 14. 15. 16. show the peg o. to screw into a prop, arranged with aws to
receive the projections r. r. on the nut. p.
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,
The improvements in drilling machines substantially as described herein and
illustrated in the drawings annexed.
T
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