A COMBINED HORIZONTAL DRILLING AND PLANING MACHINE FOR CIRCULAR WORK.”
Year: 1874

page_text: LETTERS PATENT to Thomas Campbell, John William Campbell, and
John Hunter, all of the Dolphin Foundry, Hunslet, near Leeds, in
the County of York, for the Invention of "A COMBINED HORIZONTAL
DRILLING AND PLANING MACHINE FOR CIRCULAR WORK.”
Deutzina iwn Planing MacHINE FOR CIRCUlar Work”
PROVISIONAL SPECIFICATION left by the said Thomas Campbell, John
William Campbell, and John Hunter at the Office of the Com-
missioners of Patents, with their Petition, on the 7th October
1874.
We, THOMAS CAMPBELL, JOHN WILLIAM CAMPBELL, and JOHN
HUNTER, all of the Dolphin Foundry, Hunslet, near Leeds, in the
County of York, do hereby declare the nature of the said Invention for
"A COMBINED HORIZONTAL DRILLING AND PLANING MACHINE FOR CIRCULAR WORK,"
to be as follows:-

page_text: or lowered by a screw and hand wheel. Upon the saddle is mounted a
horizontal spindle to carry a drill cutter in a line with the centre of the
horizontal bed.. This spindle is driven by bevil wheels from the upper
end of a vertical shaft, which at its lower end is itself driven by bevil
wheels from a horizontal driving shaft driven by a strap. The vertical
shaft can slide endwise through the bevil wheel by which it is driven, so
that the saddle may be raised and lowered for setting the drill to any
required height. The drill spindle can also slide endwise through the
bevil wheel by which it is driven, which allows of the drill being fed
forwards by a screw and hand wheel whilst drilling. The top of the
standard has an arm projecting from it carrying a reversing tool holder
for holding a planing tool. The work is fixed to a horizontal circular
bed, which can be revolved upon a saddle mounted upon the horizontal
bed of the machine. The saddle can be moved to and fro along the hed
by means of a screw and hand wheel, and the axis of the circular bed:
can by this means be brought nearer to or further from the planing tool,
and the machine be thereby set to plane work to any desired radius.
The circular bed has a worm wheel fixed around it, into which gears a
worm on a shaft, which can be driven in either direction by crossed and
uncrossed belts. By preference the belts work over fast and loose pullies:
upon a counter shaft gearing with the shaft which carries the worm.
The worm can slide freely upon its shaft, so that the circular bed is free
to slide to and fro, and can still be driven by the worm.
When the machine is to be used for drilling any part of the circum-
ference of the work can be brought opposite to the drill by turning the ?
circular bed; the work can also be moved up to the drill by moving
forward the saddle which carries it; the drill also can be raised or
lowered, as above explained, to drill the work at any desired height, and
can be fed forwards by a hand wheel and screw whilst drilling.
When the machine is to be used for planing circular work the circular g
bed can be revolved in either direction by means of the worm, as before
explained, and a slide bar fitted with belt forks is provided so that either
the crossed belt or uncrossed belt may be quickly thrown in and out of
action, and the worm which drives the circular bed be thereby turned in
either direction desired.
3

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Campbell, John William Campbell, and
John Hunter in the Great Seal Patent Office on the 7th April
1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, THOMAS
CAMPBELL, JOHN WILLIAM CAMPBELL, and JOHN HUNTER, all of the
Dolphin Foundry, Hunslet, near Leeds, in the County of York, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of October, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
cighth year of Her reign, did for Herself, Her heirs and successors, give
and grant unto us, the said Thomas Campbell, John William Campbell,
and John Hunter, Her special license that we, the said Thomas Camp-
bell, John William Campbell, and John Hunter, our executors, admini-
strators, and assigns, or such others as we, the said Thomas Campbell,
John William Campbell, and John Hunter, our 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, the Channel Islands, and Isle
of Man, an Invention for "A COMBINED HORIZONTAL DRILLING AND Planing
MACHINE FOR CIRCULAR WORK," upon the condition (amongst others) that´
we, the said Thomas Campbell, John William Cambell, and John
Hunter, our executors or administrators, by an instrument in writing
under our or their hands and seals, or under the hand and seal of one of us
or them, 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 John William Campbell, on behalf
of myself and the said Thomas Campbell, and John Hunter, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :—
This Invention has for its object a combined horizontal drilling and
planing machine for circular work.

page_text: Figure 1 is a plan; Figure 2, an elevation partly in section; and
Figure 3, an end elevation of the machine.
The machine is composed of a horizontal bed a, at one end of which
is a vertical standard 6 having upon it a sliding saddle c, which can be
raised or lowered by a screw & and hand wheel d. Upon the sandle is t
mounted a horizontal spindle e to carry a drill cutter in a line with the
centre of the horizontal bed. This spindle is driven by bevil wheels
e¹, f, from the upper end of a vertical shaft f, which at its lower end
is itself driven by bevil wheels f", g³, from a horizontal driving shaft g
driven by a strap. The vertical shaft f can slide endwise through the ]
bevil wheel by which it is driven, so that the saddle may be raised and
lowered for setting the drill to any required height. The drill spindle e
can also slide endwise through the bevil wheel e¹, by which it is driven,
which allows of the drill being fed forwards by a screw e² and hand
wheel / whilst drilling. On the axis of this hand wheel / is a pinion ¾¹ :
gearing with a wheel e³, which works as a nut upon the screw e², and
when rotated gives to the screw an endway motion in one or other
direction. The screw e* is hollow, and a stem forming part of the
spindle e passes through it. The top of the standard has an arm pro-
jecting from it carrying a reversing tool holder i for holding a planing
tool. The work is fixed to a horizontal circular bed k, which can be
revolved upon a saddle 7 mounted upon the horizontal bed a of the
machine. The saddle can be moved to and fro along the bed by means
of a screw m and hand wheel, and the axis of the circular bed can by
this means be brought nearer to or further from the planing tool, and
the machine be thereby set to plane work to any desired radius. The
circular bed has a worm wheel ¹ fixed around it, into which gears a
worm n¹ on a shaft n, which can be driven in either direction by crossed
and uncrossed belts. By preference the belts work over fast and loose
pullies o, o, upon a counter shaft o gearing with the shaft n which
carries the worm. The worm n¹ can slide freely upon its shaft, so that
the circular bed kis free to slide to and fro, and can still be driven by
the worm.

page_text: lowered, as above explained, to drill the work at any desired height, and
can be fed forwards by the hand wheel and screw whilst drilling.
When the machine is to be used for planing circular work the circular
bed k can be revolved in either direction by means of the worm n¹, as
before explained, and a slide bar p fitted with belt forks is provided, so
that either the crossed belt or uncrossed belt may be quickly thrown
in and out of action, and the worm n³ which drives the circular bed be
thereby turned in either direction desired.
Figure 4 represents a locking arrangement which we apply in con-
nection with the slide bar p. The slide bar may be shifted by pins
temporarily attached to the circular bed k, or it may be shifted by
hand.
What we claim is, the combined horizontal drilling and planing
machine, substantially as described.
In witness whereof, I, the said John William Campbell, have
hereunto set my hand and seal, this Fifth day of April, in the
year of our Lord One thousand eight hundred and seventy-
five.
TATTAr
JOHN WILLIAM CAMPBELL. (L.S.)