A COMBINED MACHINE OR TOOL FOR BORING, TURNING, AND KEY BED GROOVING
Year: 1874

page_text: LETTERS PATENT to Martin Atock, of Broadstone, Dublin, Ireland,
Engineer, for the Invention of "A COMBINED MACHINE OR TOOL FOR
BORING, TURNING, AND KEY BED GROOVING."
Scaled the 29th December 1874, and dated the 5th August 1874.
PROVISIONAL SPECIFICATION left by the said Martin Atock at the
Office of the Commissioners of Patents, with his Petition, on the
5th August 1874.
I, MARTIN ATOCK, of Broadstone, Dublin, Ireland, Engineer, do
hereby declare the nature of the said Invention for "A COMBINED
MACHINE OR TOOL FOR BORING, TURNING, AND KEY BED GROOVING," to be as
follows:-
This machine may be used for boring out and facing the bosses of
two wheels, or boring two-wheel tyres, or boring, facing, or turning any
other two picces of work at the same time; also for turning the two
journals of a straight axle or shaft at one time, or for cutting and
grooving two key beds at one time.

page_text: The machine or tool consists of a centre standard supporting two face
plates and two beds supporting the loose headstocks and the slide rests,
or the whole frame may be cast in one piece. The faco plates are cithor
fixed to the same hollow shaft or to two separate hollow shafts, which
are connected together when required by a sliding clutch box or other
cquivalent. The face plates are cast or fixed to spur wheels, which aro
driven by pinions on a side shaft. The face plates are provided with
movable centres, and the gearing is so arranged that one or both face
plates can be driven at the same time, thus converting the machine into
two independent lathes.
One of the movable headstocks is mounted on a slide, and can be
moved laterally for the convenience of putting in and taking out work.
The slide rests are moved to and fro by right and left-handed screws and
by racks and pinions as usual. The circular cutters for cutting key
beds are supported in the slide rests and driven by worms on the side
shaft, gearing into wheels on the axles of the cutters or otherwise.
The machine is driven by speed pulleys and double gear as in ordinary
slide lathes.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Martin Atock in the Great Seal Patent Office on
the 1st February 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MARTIN
ATOCK, of Broadstone, Dublin, Ireland, Engincer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Iler Letters
Patent, bearing date the Fifth day of August, in the year of our
Lord One thousand eight hundred and seventy-four, in the thirty-eighth
year of Iler reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Martin Atock, Iler special licence, that I,
the said Martin Atock, my executors, administrators, and assigns, or
such others as I, the said Martin Atock, my 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

page_text: the United Kingdom of Great Britain and Ireland, the Channel Islands
and Isle of Man, an Invention for "A COMBINED MACHINE OR TOOL FOR
BORING, TURNING, AND KEY BED GROOVING," upon the condition (amongst
others) that I, the said Martin Atock, my executors or administrators,
3 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 Martin Atock, 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 (that is to say) :-
This machine may be used for boring out and facing the bosses of
two wheels, or boring two-wheel tyres, or boring, facing, or turning any
other two pieces of work at the same time; also for turning the two
journals of a straight axle or shaft at one time, or for cutting and
grooving two key beds at one time.
The machine or tool consists of a centre standard supporting two face
plates and two beds supporting the loose headstocks and the slide rests,
or the whole frame may be cast in one piece. The face plates are either
fixed to the same hollow shaft or to two separate hollow shafts, which
are connected together when required by a sliding clutch box or other
equivalent. The face plates are cast or fixed to spur wheels, which are
driven by pinions on a side shaft. The face plates are provided with
movable centres, and the gearing is so arranged that one or both face
plates can be driven at the same time, thus converting the machine into
two independent lathes.
One of the movable headstocks is mounted on a slide, and can be
moved laterally for the convenience of putting in and taking out work.
The slide rests are moved to and fro by right and left-handed screws and
by racks and pinions as usual. The circular cutters for cutting key
beds are supported by the carriage of the slide rests, and are driven by
worms on the side shaft gearing into wheels on the axles of the cutters
or otherwise.

page_text: The machine is driven by speed pulleys and double gear, as in ordinary
slide lathes.
And in order that my Invention may be fully understood and readily
carried into operation, I will proceed to describe the accompanying
Slicet of Drawings, reference being had to the figures and letters marked
thereon.
· Figs. 1 and 2 represent end and front elevations of the combined
machine or tool for boring, turning, and key bed grooving. a is tho
double headstock or centre standard; b, b, are beds bolted to the centre
standard or cast therewith; c, c, are slide rests worked by the right and
left-handed screws d, d; e, e, aro face plates fixed on the hollow shaft e¹
and geared on the back side and worked by pinions on the cone shaft j¹ ;
faro the ordinary sliding headstocks, one of which is or may be
moved laterally for the convenience of putting in or taking out work;
9, 9, are the keyway grooving arrangements worked by worms on the
cone shaft, gearing into wheels on the shafts h, and by straps and
pulleys and bevel wheels, as shewn at Fig. 1, or by other suitablo
gearing; i, i, are the cutters for grooving the keyways, and j is tho
driving conc and double gearing similar to those employed in an ordinary
slide lathe.
Figs. 3 and 4 represent end and front elevations of my improved
machine or tool, showing the face plates arranged to work separately at
different speeds, or together at one speed, by means of the sliding clutch
box or otherwise. In this case each face plate e is fixed to a separato
hollow shaft, which are connected or disconnected by moving the sliding
clutch box 7. The face plates have movable centres when tho machino
is used as a double lathe and when they are both turning articles that
are centred at both ends. The double gearing on the cone j is dispensed
with, as the speed of the face plates can be varied by using either one
or other of the pinions for driving from, as shown in Fig. 4.
Having thus stated the nature of my Invention and described tho
manner of performing the same, I wish it to be understood that I do
not intend to limit myself to the details given, as they may be consider-
ably varied or modified. I would also remark that I make no claim to
any of the parts of the combined machines when taken separately, but
what I do claim is the combined machines or tools for boring, turning,

page_text: and key bed grooving, arranged and constructed in the manner described
and shewn in the Drawings.
In witness whereof, I, the said Martin Atock, have hereto set
my hand and seal, this Twenty-fifth day of January, One thousand
eight hundred and seventy-five.