AN IMPROVED DRILLING MACHINE
Year: 1839

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN'
MILLER, of Bolton, in the County of Lancaster, Machine Maker, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by
Her Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Twenty-third day of April, in the second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Miller, Her especial licence, full power, sole privilege and
authority, that I, the said John Miller, my exors, adñiors, and assigns, and
such others as I, the said John Miller, my exors, adiñors, and assigns, should
at any time agree with, and no other, from time to time and at all times
during the term of years therein expressed, should and lawfully might make,
use, exercise, and vend, within England and Wales and the Town of
Berwick-upon-Tweed, my Invention of "AN IMPROVED DRILLING MACHINE;"
in which said Letters Patent is contained a proviso that I, tho said John
Miller, shall cause a particular description of the nature of my said Invention,
and in what manner the same is to be performed, to be enrolled in Her
Majesty's High Court of Chancery within six calendar months next and
immediately after the date of the said in part recited Letters Patent, as in
and by the same, reference being thereunto had, will more fully and at large
appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
John Miller, do hereby declare the nature of my Invention of an Improved
Drilling Machine to consist in an apparatus by which I am enabled to drill or
bore a series of holes equi-distant from each other in a superior and more

page_text: economical way than heretofore; and the manner in which the same is to be
performed and carried into effect is set forth and described in the accompany-
ing Drawing, and the following description thereof :-
In this Drawing the scale is marked thereon, and the various letters and
figures of reference indicate the same parts throughout.
DESCRIPTION OF THE DRAWING.
Figure 1 represents a front elevation of my improved drilling machine, and
Figure 2 a side view of the same, in which three drills or bits are used; but I
would remark that I do not confine myself to three drills or bits, as the
number may be increased or diminished in any new machine, so as to be
better adapted to the nature of the work for which- it is designed. In this
Drawing A represents the driving pulley that has motion communicated to it
from any convenient source through the strap B. This driving pulley A is
fixed to the driving shaft C, at the opposite extremity of which is geered a
mitre wheel D, working into a corresponding wheel keyed to the upright
shaft E. On the upright shaft E is placed a mitre wheel F, that is so fixed to
the shaft E as to slide freely up and down by means of a long key or feather
on the shaft E, the wheel F having a corresponding recess so as to revolve
with it. The wheel F imparts motion through the wheel G and shaft G to the
bevils marked H at its opposite extremity, and thus communicates a revolving
motion to the centre spindle I, at the top of which is fixed a small pinion J
that geers into two corresponding pinions fixed to the spindles on either side,
and at the lower end of these spindles the drills or cutters K, K, K, are fixed.
Having now described the means by which rotary motion is imparted to the
three drills or cutters, I will explain the movements by which I cause the
apparatus or framework that contains the drills to be elevated or thrown
out of geer when they have arrived to the depth required. This will be
understood by referring to Figures 3 and 4, which exhibit the geering
apart from the framework of the drils. On the shaft G is fixed the worm
L, that communicates motion through the worm wheel L fixed to the small
upright shaft M, having at its lower end the worm N, that works or drives
the worm wheel O on the horizontal shaft P. On this shaft is a clutch
box Z, the moveable part of which is traversed by means of the fork R, of the
form shewn in the Drawing. This fork is moved by the small pinion that is
fixed to the small shaft S, at one extremity of which is fixed two arms, one of
which is provided with the weight T. The framework that contains the
spindles and drills is suspended to the chain U that passes over the pulley U',
and counterbalanced by a weight attached to its opposite end, marked W.

page_text: This weight is made sufficiently heavy to raise the framework in which the
drills are supported, which is fitted accurately to V-edges upon the sides of the
upright standard of the machine. On the small shaft P is a pinion X, which
geers into a rack g fixed to the back of the upright standard of the machine, by
which a downward motion of the drills is effected. The end of the rod Y, to
which is fixed the clip or fork R of the clutch box Z, is flattened so as to leave
a shoulder that bears upon the under edge of the lever b. This lever 6 is
made to drop or fall a distance, corresponding with the holes to be drilled or
bored. Now it will be understood that after the lever 6 has fallen the distance
intended, the apparatus or framework that contains the spindles and drills still
continues to move downwards until it has arrived sufficiently low to clear the
small shoulder on the rod Y, as before described. The weight T then acts
upon the lever or arm h, and moves the rod Y backwards. On the rod Y is
fixed the clip or fork R, by which the rod is disengaged from the geering for
lowering the drills, and allow the weight W to elevate them. The clutch Z
is then put into geer by the operative after the work has been adjusted,
and the operation is repeated. The contrivance by which I regulate
the exact number of divisions or spaces between the holes in the work
to be drilled or bored may be understood by referring to Figure 1, where it
will be seen that the table V, upon which the work is placed, may be traversed
in either direction along the support or bed A, A. This table is. actuated by
a screw revolving in bearings at each extremity, and passing under the whole
length of the bed or support. At one end of this screw is fixed the dividing
wheels f, by which the number of holes in a given length is correctly deter-
mined by the pitch of the wheels, together with that of the screw; and to
prevent what is technically termed "back lash" in the motion of the table, I
employ two nuts, as seen at Figure 5, so fixed to the table as to allow of being
moved nearer or farther from each other when necessary, and thus compensate
for the wear of the one by adjusting the position of the other.
Having now described the combination and operation of my improved
drilling machine, I wish it to be understood that I do not claim any of the
separate well-known parts of which the machine is composed. But I do claim
the combination and general arrangement of the machine herein-before
described for the purposes already alluded to, which being, to the best of my
knowledge, new, and never before used in this kingdom, I deliver this as a
true and faithful Specification of the same.
In witness whereof, I, the said John Miller, have hereunto set my hand
and seal, this Sixteenth day of October, in the year of our Lord One
thousand eight hundred and thirty-nine.
JOHN (L.B.) MILLER.

page_text: AND BE IT REMEMBERED, that on the Sixteenth day of October, in
the year of our Lord 1839, the aforesaid John Miller came before our said,
Lady, the Queen in Her Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose..
:
Inrolled the. Nineteenth day. of October, in the year of our Lord One
thousand eight hundred and thirty-nine.