IMPROVEMENTS IN BORING MACHINES
Year: 1879

page_text: LETTERS PATENT to William Willis Boulden, of Boughton, Kent, for the
Invention of "IMPROVEMENTS IN BORING MACHINES."
Sealed the 17th June 1879, and dated the 10th March 1879.
PROVISIONAL SPECIFICATION left by the said William Willis Boulden at
the Office of the Commissioners of Patents on the 10th March 1879.
WILLIAM WILLIS BOULDEN, of Boughton, Kent. "IMPROVEMENTS IN BORING
MACHINES."
This Invention relates to drilling apparatus for general use, but is specially
adapted to the use of wheelwrights.
My improved drilling apparatus may be constructed of wood or metal. It con-
sists of two vertical side frames, securely stayed together cross-wise and fixed at the
bottom to feet or to a horizontal stand. A smaller frame extends across the
vertical frame and slides freely up and down within the same. This cross frame
carries the drilling mechanism, which consists of a vertical spindle provided at its
lower end with a drill socket, and having securely keyed to its upper end a toothed
bevel wheel, which takes into another similar wheel keyed on to a horizontal
spindle working in suitable bearings fixed on to the cross frame and actuated by
a handle at each end of the said spindle. To cross stays, near the bottom of and
extending between the vertical side frames, I fit adjustable sliding brackets or
grippers, adjusted and fixed by means of set screws; a little lower and at right
angles to such brackets or grippers I provide each of the side frames with screws,
which in conjunction with the grippers hold the body or substance to be drilled in
any required position. The ends of the grippers may be shaped so as to securely
grip any particular form of material, as for instance, the nave or boss of wheels,
and the ends of the screws may be provided with loose plates of any requisite curve
for a similar purpose. I raise the cross frame to the top of the vertical side frames
by means of suitable winding mechanism, which I prefer to make in the form of a
drum turned round by a handle, and thus caused to wind up a chain or other
Driss G621

page_text: attachment connected to the top of the cross frame. I hold the cross frame in
any required position by means of a pawl gearing into the teeth of a wheel on the
same axis as the winding drum.
When the machine is required to be used for drilling I lower the cross frame
until the point of the drill rests on the work to be operated upon and previously
fixed in the machine; I then disconnect the winding up chain therefrom and turn
the handles of the horizontal spindle, thus causing the drill to revolve, and con-
sequently make the required perforation. When this is done I again connect the
cross frame with the winding mechanism and raise it to any required height within
the side frames, and so on.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Willis Boulden in the Great Seal Patent Office on the 4th
September 1879.
WILLIAM WILLIS BOULDEN, of Boughton, Kent.
MACHINES."
"IMPROVEMENTS IN BORING
This Invention relates to drilling apparatus for general use, but is specially
adapted to the use of wheelwrights.
My improved drilling apparatus may be constructed of wood or metal. It con-
sists of two vertical side frames A, A, securely stayed together crosswise A¹, and
fixed at the bottom to feet or to a horizontal stand a². A smaller frame B extends
across the vertical frame and slides freely up and down within the same.
This
cross frame carries the drilling mechanism, which consists of a vertical spindle C
provided at its lower end with a drill socket C', and having securely keyed to its
upper end a toothed bevel wheel D, which takes into another similar wheel D¹
keyed on to a horizontal spindle E working in suitable bearings fixed on to the
cross frame and actuated by a handle F at each end of the said spindle. To cross
stays near the bottom of and extending between the vertical side frames I fit
adjustable sliding brackets or grippers g adjusted and fixed by means of set screws g¹,
which in conjunction with the grippers hold the body or substance to be drilled in
any required position. The ends of the grippers may be shaped so as to securely
grip any particular form of material, as for instance, the nave or boss of wheels;
and the ends of the screws may be provided with loose plates of any requisite curve
for a similar purpose. I raise the cross frame to the top of the vertical side frame
by means of suitable winding mechanism H, which I prefer to make in the form of
a drum turned round by a handle I, and thus caused to wind up a chain or other
attachment connected to the top of the cross frame. I hold the cross frame in any
required position by means of a pawl J gearing into the teeth of a wheel on the
same axis as the winding drum.
When the machine is required to be used for drilling I lower the cross frame
until the point of the drill rests on the work to be operated upon and previously
fixed in the machine. I then disconnect the winding up chain therefrom and turn
the handles of the horizontal spindle, thus causing the drill to revolve, and con-
sequently make the required perforation. When this is done I again connect the
cross frame with the winding mechanism, and raise it to any required height
within the side frames, and so on.
Having now described the nature of my Invention, and the manner in which the
same is to be performed, I wish it to be understood that I do not limit myself to
the precise details hereinbefore described, as the same may be varied without
departing from the nature of my said Invention.
What I claim as my Invention is the improvements in the construction of boring
machines, substantially as herein described and as illustrated, or any mere variation
or modification thereof.
In witness whereof, I, the said William Willis Boulden, have hereunto set
my hand and seal, this Fourth day of September, in the year of our Lord
One thousand eight hundred and seventy nine