A MACHINE FOR STRIKING BLOWS BY HAMMERS, AND FOR DRILLING HOLES PROVISIONAL SPECIFICATION
Year: 1870

page_text: LETTERS PATENT to Ingleby Thomas Miller, of 85, Gracechurch
Street, in the City of London, Gentleman, for the Invention of
"A MACHINE FOR STRIKING BLOWS BY HAMMERS, AND FOR DRILLING HOLES
PROVISIONAL SPECIFICATION left by the said Ingleby Thomas Miller
at the Office of the Commissioners of Patents, with his Petition,
on the 4th August 1870.
I, INGLEBY THOMAS MILLER, of 85, Gracechurch Street, in the City
of London, Gentleman, do hereby declare the nature of the said Inven-
tion for "A MACHINE FOR STRIKING BLOWS BY HAMMERS, AND FOR DRILLING
HOLES IN ROCK, STONE, AND OTHER HARD SUBSTANCES," to be as follows, that
is to say :-
A machine containing hammers mounted on one or between two
revolving wheels or discs, and so contrived that each hammer shall pass
under the jumper, drill, chisel, or any other thing it strikes immediately
on the blow from it being delivered. There may be several hammers

page_text: on each wheels. The jumper, drill, chisel, or other thing by which any
blow is conducted from the hammer to the substance operated upon
will be mounted on holdfasts geared to the axle of the hammer wheel,
so that the head of the drill, &c. can be presented to receive the hammer
blows on the same line at any point of the circle from which it may be
struck, and be removed when required. And where holes are required
to be drilled provision will be made for turning the drill, &c. in the hole
being bored that the point or edge may strike a different surface at each
blow it receives; also for releasing the drill, &c. in case of its being fixed
or jambed in the hole and for indicating the depth of its penetration.
There will also be guides and regulators by which the hammers will
be made to move forward on the same line or angle as that on which
the drill is working and according as it penetrates the substances, that
is being bored the guides will be moved to, and fixed at any angle.
The machine may contain one or more of these rotary wheels with
their accompanying hammers and drills. This machine may be worked
by hand or adapted for steam or other driving power.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Ingleby Thomas Miller in the Great Seal Patent
Office on the 3rd February 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, INGLEBY
THOMAS MILLER, of 85, Gracechurch Street, in the City of London,
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of August, in the year of
our Lord One thousand eight hundred and seventy, in the thirty-fourth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Ingleby Thomas Miller, Her special licence
that I, the said Ingleby Thomas Miller, my executors, administrators,
and assigns, or such others as I, the said Ingleby Thomas Miller, my 3
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,

page_text: the Channel Islands, and Isle of Man, an Invention for "A MACHINE FOR
STRIKING BLOWS AND FOR DRILLING HOLES IN ROCK, STONE, AND OTHER HARD
SUBSTANCES," upon the condition (amongst others) that I, the said Ingleby
Thomas Miller, my executors or administrators, .by an instrument in
writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Ingleby Thomas Miller, do hereby.
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement:-
1. A machine containing one or more hammers mounted on or fixed by
axles to the edge of one or between the edges of two revolving wheels or
discs (the said wheels or discs whether single or in pairs being hereafter
referred to by the word "disc"), the handle or arm of each hammer
(hereinafter called "handle") will be extended to or towards the
centre of the disc. At some convenient place the handle will be either
pierced with a round hole through which it will be mounted on a pin
fixed in the edge of the disc or the edge of two discs; or in the place of
such round hole there will be a cross bar made as part of the handle, the
ends being made round and fixed in round holes prepared to receive them
in the edge of the disc or discs; thus by either plan forming an axle on
which each hammer and its handle will play. The end of it may be-
mounted by a weight or hammer to act as a balance weight or hammer,
in the latter case forming two hammers which will revolve on their
common axle; two or more pairs of such hammers can be mounted on
one disc. Or the end of each handle may be fastened to the end of the
handle of another hammer mounted on the opposite side of the disc by a
straight bar of metal, wood, or other substance moving over the centre
of the disc, of such length that the hammers playing on their own axles
will keep each other in motion, so that when the handle of the onc
hammer is at or near the outer edge of the disc the other hammer will
be at the extreme limit of its circumference, and thus when one
hammer has delivered its blow the other will follow and strike the
succeeding blow. Or the end of each handle may be made to terminate
in the segment or part of a circle of a toothed, cog, or spur wheel of such

page_text: dimensions and with such number of teeth and corresponding form that
the teeth, cogs, or spurs on the end of one handle may fit into and pass
between the teeth, cogs, or spurs at the end of the handle of the other
hammer mounted at the opposite side of the disc, so that each pair of
hammers with their respective handles moving on their own axles will so
influence the motions of each other that when a hammer strikes a blow
it will be lowered, its handle will be moved to or towards the edge of
the disc and the opposite hammer will be moved into its place on the
outer limit of its circumference ready to strike the next succeeding blow.
Where several hammers mounted on the same disc are required to work
in pairs by the union of their respective handles this will be effected by
each pair of handles being bent or turned on one side, so that one united
pair will pass over and clear of any other united pair mounted on the
same disc.
2. The jumper, chisel, or drill (either being herein-after called
"drill"), by which the effect of blows are conducted from the hammer
to the substance to be acted upon will be so mounted that the head of it.
can be presented and held fast to receive blows from the hammer at any
point of the disc. Where the drill has to work on a line horizontal with
the movement of the carriage of the machine it can be fixed in any way
found most convenient, as by extending a cover over the drill in con-
nection with some fixed part of the machine, and erecting thereunder
the holdfasts or supports by which the drill can be secured in its place,
or in any other convenient way. If the drill has to work in various.
directions, and in lines oblique to the line of motion of the said carriage,
it can be fixed and made to act in such various directions by means of
rods or arms of metal (herein-after called "arms"), each arm being
pierced with a round hole at some convenient part of its length, by which
it can be affixed to the axle of the disc, one being fixed on each axle of
the disc, and both so bent and extended forward and upward as to be in
front of the disc and above the line in which the hammer revolves, and
from thence continued along and over the line of the drill, the part so
continued being united from end to end either by a covering or by bars
of metal from which the holdfast sending in rings or circles, as next
herein-after mentioned, will be suspended and fixed for securing the drill
with the head presented and fixed for receiving blows from the hammer
at any point of the circumferance of its revolution; these arms will also
be extended behind the disc clear of machinery, and there united so
that each pair must move in unison.

page_text: 3. The drill will be fixed in its place by being driven through two
or more rings, herein-after called " circles," fixed as lastly mentioned
either in the above-mentioned cover, or to the bars uniting the arms, or
by any other convenient contrivance that will insure the object in view.
These circles must be constructed so as to hold the drill firmly in its.
place and admit of its being removed when the head is extended under
the blows of the hammer. This may be effected by making the circles to
open, and be screwed together, or one part of the circle may be detached
and screwed on to its place when the drill is fixed; but I consider the
better plan, especially so where the drill has to revolve, will be to use
a detached ring made in two halves, the outer sides being smooth to fit
within the circle, the inner side corresponding with and fitting the shape
of the drill, which will not be round it. One end of these half rings
will be larger than the circle, and both ends will terminate in screws.
When the drill has to be fixed the two parts of this ring will be driven
with the drill through the circle and screwed together with nuts one at
each end; the nuts, or at least the one fitted at the smaller end, being
so large that the ring cannot slip out of its circle..
4. Where the drill is required to strike a different surface at each
blow it receives then one of the last-mentioned rings (that nearest the
point of the drill is best) will be extended on one end to admit of a
toothed cog or spur wheel being affixed, to which any convenient gearing
may be applied for turning the drill. I think the better plan will be to
use a bevelled wheel, and attach from some convenient spot near the
drill appliances to hold a like wheel, by which the turning may be
effected through a leather band revolving from an axle of the disc, so
that both hammers and drill will revolve or work in unison and no
damage will be done to the machinery should the drill get fixed in
its work.
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5. Should the drill get fixed in its work it may be relieved by a
spring that acts by pressure or contraction to help the recoil; this
spring will be attached at some convenient spot near the drill and a
piece of metal of such form and of such shape and appliances that it
will slide along the drill and be screwed on it at any spot and be used
either to press a spring acting by tension or by attaching a spring
thereto, and so giving tension to one acting by contraction; this same
piece of metal may be shaped so as to act as a pointer to a graduated.

page_text: metal or wooden scale affixed by the side of it to indicate the penetration
of the drill.
6. Where holes required to be bored are not horizontal with the line
of movement of the machine, but oblique or at divers angles, this work
can be effected by building the machine in a separate framework and
fixing it in a carriage in such a way that it can be inclined to and
moved on the same incline as that on which the drill has to work. The
machine and drill both moving together on the same line of motion
according to the following plan:-Two levers will be attached to the
carriage, one on each side, the front ends near the disc, hammers, and
drills being secured and made to work on hinges, the opposite ends
being sufficiently. long to be clear of machinery and united by a cross
bar, so that both bars must act or move in unison. These levers will
be lifted to the angle required for working the drill and fixed in their
places to a spur or upright piece of metal or wood at the end of each
side of the carriage, or by any other suitable contrivance. The end of
these levers, at or over the places where hinged, will have two oblong
slits sufficiently wide and long to admit the axles of the frame of the
machine and allow it to move forward the distance required for drilling
holes. There are various other contrivances which will answer the same
purpose.
7. The disc with its mounted hammers, the drill with its proper
supports, levers for guiding the drill for inclining and moving the
machinery, and all appliances connected therewith, (all being together
(herein after comprised in and referred to by the word "machine,") may
be built in a separate frame with axles which will be affixed in the
last-mentioned slits, or otherwise attached to the said levers of the
carriage or fixed to the carriage by any other convenient contrivance.
Connected with this machine will be two rods (herein-after called
"rods,") one end of each terminating in a ring by which one will be
affixed to each axle of the machine; two of these rods will be thus
attached, one on each side of it, the opposite ends being united by a
cross bar of such length that it will be extended to and so cover and
be affixed to the levers of the carriage that the rods and levers will
always be on the same incline at any required angle, and yet allow the
rods to move forward or backward, pushing or pulling the machine
on the incline of the lever of the carriage, which will be effected by a

page_text: screw passing through the back of the bar uniting the levers of the
carriage and fixed to the cross bar uniting the rods, so that as the screw.
is turned so will the machine move. It may be found more convenient
to apply a lever attached to the framework of the machine in the same
manner as the lever is to the carriage, and unite the levers of the
carriage and machine side by side, but in such a way that the levers of
the machine must slide down and beside the levers of the carriage
without power of deviating from the incline it may be fixed at, and to
use the two last-mentioned rods merely as pushing or pulling rods by,
means of the said screw.
8. The proper inclination of the drill so as to work on the same angle
as the machine is made may be regulated in various ways, but it will
be best to make this self-acting by attaching to that part of the arms
extended behind the disc bars of metal in such a manner as to unite all
the said arms to the rods moving the machine or to the lever by which
it is inclined, so that by these bars the arms must rise or fall together
and in unison, thus making the machine with the aid of the foregoing
arrangement in a measure self-adjusting, and securing the motion of
every part being in unison at any angle or incline on which it has to be
worked.
9. The machine may be fixed firmly in its upright position in various
ways; my plan is to make the rods and levers, or either, where attached
to the axle of the machine, as stated in paragraph 7 to end in discs,
so planned. that they can be fixed on the frame of the machine at
any angle, or to form a half circle on the hinder part of the machine
on both sides of it, against which the two rods or the levers of the
frame of the machinery (if they are used as well as the rods will have
their upward and downward motion. When these rods and levers are
placed in position they or the rods or levers separately, as may be
convenient, will be bound to the half circles by screws or bands of iron
overlapping them and screwed thereon; the method of binding adopted
and the provisions for uniting them to the half circles being such
as to admit of the binding being effected at any part of the half circle, .
and be incapable of further movement until unbound. Or this half
circle may be bound to the lever of the carriage by an overlapping bar
of metal containing within it a pair of small wheels on which the hinder
part of the machine will rest and slide down as propelled by the screw
working as before mentioned. Or this half circle may be made to pass

page_text: between the lever of the machine and lever of the carriage, and bound
to one or both in such a way as to compel its moving on the inclination
it is fixed at.
10. The machine may be enlarged and the power increased by means
of multiplying and fly wheels; the discs may be built one over the
other or side by side, and made to work separately, or two or more may
be made to work together by connecting them with suitable gearing.
They may be so geared that where there are two side by side the hammers
of the one will strike the drill at the top line of the revolution of the
hammer, and the hammers of the other will strike a drill at the bottom
line of the revolution of the hammer, both drills working in the same
direction; or where one disc only is used the hammers may be so geared
that by altering the gearing they may be made to strike the upper and
lower drill, or each pair of hammers may be made to strike on the
opposite direction; or the disc itself may be made to turn round on its
carriage so that the same hammers can without altering the gearing
strike two drills working in the same direction, the one being above the
other. The arms for holding the drills may be made double so as to
hold two drills, one on the upper and the other on the lower line of the
revolving hammers.
11. The machine can be worked by steam or any other motive power,
but its chief use will be as a hand machine worked by a winch or
treddle, one or both combined, in confined places where space is an
object, such as levels or adits of mines.
12. In the above Specification I claim the plan of the revolving disc,
and the way of attaching the hammers thereto, so as to strike the drills
in the several ways above specified; of fixing the drills in their circles,
holding them fast to receive blows from the hammer, and admit of their
being removed and replaced, also where required of turning them within
their circles; for relieving them when jambed, and indicating the depth
of their penetration when boring holes; also the plan of mounting them
on supports or arms capable of revolving on the same axle as the disc,
so that the drill can be presented to receive its blow at any point of the
circumference; and the plan of putting the machine together when
required so that the discs, hammers, drills, and attendant gearing may
be fixed and made to move forward and backward in unison and on one
common line of motion, whether it be on a line horizontal with any
movement of the carriage containing the machinery, or at any desired

page_text: angle oblique thereto; and for fixing and steadying this machinery in
its place when built and put together to be moved at divers inclinations.
I do not bind myself to any particular plan in respect of any of the
parts above described, or of the method of attaching the several parts,
especially of those parts which manifestly admit of various plans and
contrivances depending either on caprice, the size of the machine, the
way it may be built, or the special object in view.
In witness whereof, I, the said Ingleby Thomas Miller, have here-
unto set my hand and seal, this First day of February, in the year
of our Lord One thousand eight hundred and seventy-one.
I. T. MILLER. (L.S.)