AN IMPROVED MACHINE FOR TURNING, SHAPING, SLOTTING, DRILLING, AND BORING METALS
Year: 1873

page_text: LETTERS PATENT to Alexander Donald and Albert James Atkey, of
33, Cornhill, in the City of London, Engineers, for the Invention
of "AN IMPROVED MACHINE FOR TURNING, SHAPING, SLOTTING, DRILLING, AND
BORING METALS."
PROVISIONAL SPECIFICATION left by the said Alexander Donald and
Albert James Atkey at the Office of the Commissioners of Patents,
with their Petition, on the 7th May 1873.
WC, ALEXANDER DONALD and ALBERT JAMES ATKEY, of 33, Cornhill,
in the City of London, Engineers, do declare the nature of the said
Invention for "AN IMPROVED MACHINE FOR TURNING, SHAPING, SLOTTING,
DRILLING, AND BORING METALS," to be as follows :-
:-
Our Invention consists in a convenient arrangement whereby the
ordinary operations of the lathe, the shaping machine, the slotting and
the drilling machine may be performed by one machine. For this

page_text: purpose we construct a machine in part very similar to an ordinary
screw cutting and surfacing length, but the back portion of the fast
headstock is furnished with a disc having a circular dovetailed groove
in it concentric with the spindle. To this disc is bolted by means of
bolts, the heads of which fit into the dovetailed groove, another disc
or plate which carries the bearings in which the drill spindle runs, and
the drill spindle is driven by bevel gearing, one of the bevel wheels
being fixed on the end of the lathed spindle which is carried out to a
sufficient length for the purpose. The inner side of the plate which
carries the drill spindle is furnished with jaws or guides through which
a bar is worked by means of a connecting rod connected to a crank pin
on a spur wheel worked from another spur wheel on the lathe spindle.
It will thus be seen that the plate which carries the bearings for the
drill spindle and the guides for the slide bar can be turned round in a
vertical plane, the bolt heads moving round in the dovetail groove, and
when it is brought into the required position it may be fixed in that
position by tightening the nuts. Thus when the machine is required
for slotting the circular plate is turned so as to bring the sliding bar
into a vertical position, and when required for shaping it is turned so
as to bring the sliding bar into a horizontal position, or it may be fixed
so as to slot or shape at any required angle. Provision is made on the
bar so that a tool box or tool may be fixed to it.
The tables upon which the casting or piece of metal to be operated
upon is to be fixed are mounted upon a bracket which is carried by a
pillar, and the bracket is so arranged that it can be swung round the
pillar, so that the one arrangement of tables will serve for shaping,
slotting, and drilling.
The tables are provided with mechanism for giving the necessary
traverse or feed to the work under operation, and the gearing by which
the feed motion is imparted is arranged so as to allow for a rising and
falling motion of the tables, and also for the difference in position which
takes place by the tables being swung from one position to another
round the pillar.
We accomplish this as follows:-We cause the motion to be given in
the first place to a fork which embraces a ring on the pillar, the fork
working in a recess so that it actuates the ring in an upward and down-
ward direction, but the ring is free to turn round the pillar without
effecting the result. To this ring an upright bar is fixed, the bar being

page_text: parallel to the pillar. This bar will thus be free to turn round the
pillar but will be affected by any motion in an upward and downward
direction imparted to it by the ring. Upon this bar we arrange a little
bracket or arm which can be slid up or down the bar and fixed at any
joint by means of a screw. This bracket carries a pin which works
into a crank on a shaft, and this shaft by means of a sliding bevel wheel
and any convenient arrangement of connecting rods and ratchets, and
ratchet wheels connected therewith, produces the motion required to
traverse the tables which carry the work under operation.
A projecting piece is formed on the circular plate which carries the
drill spindle, and is furnished with a slot or groove so as to act as a
swing frame.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Alexander Donald and Albert James Atkcy in
the Great Seal Patent Office on the 7th November 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, ALEXANDER
DONALD and ALBERT JAMES ATKEY, of 33, Cornhill, in the City of
London, Engineers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of May, in the year of our
Lord One thousand eight hundred and seventy-three, in the thirty-sixth
year of Her reign, did for Herself, Her heirs and successors, give and
grant unto us, the said Alexander Donald and Albert James Atkey,
Her special licence, that we, the said Alexander Donald and Albert
James Atkey, our executors, administrators, and assigns, or such others
as we, the said Alexander Donald and Albert James Atkey, our cx-
ecutors, 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, usc, exercise, and
vend, within the United Kingdom of Great Britain and Ircland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED
MACHINE FOR TURNING, SHAPING, SLOTTING, DRILLING, AND BORING METALS,"
upon the condition (amongst others) that we, the said Alexander Donald
and Albert James Atkey, our executors or administrators, by an instru-

page_text: ment in writing under our, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Inven-
tion, 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 we, the said Alexander Donand and Albert
James Atkey, do hereby declare the nature of our said Invention; and
in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
Our Invention consists in a convenient arrangement whereby the
ordinary operations of the lathe, the shaping machine, the slotting and
the drilling machines may be performed by one machine. For this
purpose we construct a machine in part very similar to an ordinary
screw cutting and surfacing lathe, but the back portion of the fast head-
stock is furnished with a disc having a circular dovetail groove in it
concentric with the spindle. To this disc is bolted by means of bolts,
the heads of which fit into the dovetail groove, another disc or plate
which carries the bearings in which the drill spindle runs, and the drill
spindle is driven by bevil gearing, one of the bevil wheels being fixed
on the end of the lathe spindle which is carried out to a sufficient length
for the purpose. Instead of the circular dovetail groove being formed
in the disc at the back of the fast headstock it may be formed in the
disc which carries the bearings of the drill spindle.
The plate which carries the drill spindle is furnished with jaws or
guides, through which a bar is worked by means of a connecting rod
connected to a crank pin on a spur wheel worked from another spur
wheel on the lathe spindle. It will thus be seen that the plate which
carries the bearings for the drill spindle, and the guides for the slide
bar can be turned round in a vertical plane, and when it is brought into
the required position it may be fixed in that position by tightening the
nuts of the bolts. Thus when the machine is required for slotting
the circular plate is turned so as to bring the sliding bar into vertical
position, and when required for shaping it is turned so as to bring the
sliding bar into a horizontal position, or it may be fixed so as to slot
or shape at any required angle. Provision is made on the bar so that a;
tool box or tool may be fixed to it.
In the annexed Sheets of Drawings which illustrate the best method
we are acquainted with of constructing our machine, Fig. 1 shews a

page_text: front elevation of the machine, A, A, being the bed of the lathe, B the
fast headstock, O the loose headstock, D the slide rest and E the screw.
These parts will not require any further explanation.
Fig. 2 is an end elevation, and Fig. 3 is a longitudinal section through
the fast headstock and the bearings of the drill spindle. The same letters
indicate the same parts in all these Figures; F is the disc or plate at
the back of the fast headstock; G is the disc or plate carrying the drill
spindle bearings H, H; this plate is fastened to the plate F by means
of the bolts I, I, the heads of which fit into the circular dovetail groove
K, K, Fig. 3.
L, L, are the jaws or guides through which the bar M works, this
bar is shewn in the position it would occupy when being used as a
shaping machine, and it is shewn furnished with an ordinary tool box N.
When required for slotting the tool box N is taken off and the disc G
is turned round until the bar M comes into a vertical position; a
slotting tool is then fixed to the bar in the ordinary way, provision for
which is made at O, O. Motion is imparted to this bar by means of
the crank pin P on the wheel Q and the connecting rod R, the wheel Q
being worked by the wheel S on the lathe spindle. The slot T on the
wheel Q allows of the stroke being altered, and the slot U in the bar
allows of the position being regulated; V is the spindle of the drilling
and boring machine, to which motion is imparted by means of the
bevil gear W. The necessary feed motion is imparted to the drill
spindle by means of the bevil gear X, the friction discs Y and the spur
gear Z which actuates a nut on a screw formed on the drill spindle.
By means of the clutch and lever a' the drill spindle may be thrown out
of gear when required by turning the hand wheel 6¹.
When the lathe is required for screw cutting the bar M. may be used
as a swing frame, provision being made for fixing the studs of the change
wheels in the slot U and gearing them up to the spur wheel on the lathe
spindle, or a projection cast on the disc itself might be made to act as a
swing frame.
The tables upon which the casting or piece of metal to be operated
upon is to be fixed are mounted upon a bracket which is carried by a
pillar, and the bracket is so arranged that it can be swung round the
pillar, so that the one arrangement of tables will serve for shaping,
slotting, and drilling. The pillar is shewn at C¹, and d¹ is the bracket
:

page_text: carrying the tables. This bracket can be raised or lowered by means of
the worm gear e', which actuates the pinion f¹ gearing into the rack 9¹.
The bracket d¹ can also be swung round the pillar, and it can be fixed
in any position by the screws h³, h¹. The pillar itself may be moved
about on the foundation plate i, . The tables should be furnished
with the ordinary longitudinal and transverse slides; k is an extra casting
fixed on to the tables in order to bring the surface up to a convenient
height for the shaping and boring machine. The necessary feed
motions may be imparted to these tables by means of the bowl & on
the spur wheel of the lathe spindle actuating a lever which works a
rocking lever overhead, and which by means of a chain actuates a
ratchet lever and wheel which can be slipped on to the square ends
of feed screws or worm shewn at m³, m³, m³, this arrangement being
one which is well understood.
Another arrangement of mechanism for transmitting the motion from
the bowl to the feed screws or worm is illustrated by Fig. 4, and is
as follows:-A is a rod by which motion is transmitted from the bowl 1,
Fig. 3, to the fork lever B, which embraces a ring O on the pillar D,
which in this case we prefer to make one of the feet of the lathe.
The fork works in a recess so that it actuates the ring C in an upward
and downward direction, but the ring is free to turn round the pillar
without affecting the result, to this ring an upright bar E is fixed, the
bar being parallel to the pillar. This bar will thus be free to turn
round the pillar, but will be affected by any motion in an upward or
downward direction imparted to the ring C by the fork lever. Upon
the bar E we arrange little bracket or arm F which can be slid up
or down the bar and fixed at any point by means of a screew. This
bracket carries a pin which works into a crank G on a shaft H and
this shaft by means of a sliding bevil wheel I, and the convenient
arrangement of connecting rods, and ratchets, and ratchet wheels
K, L, M, connected therewith produces the motion required to traverse
the tables which carry the work under operation.
These arrangements for actuating the feed screws and worm of the
tables will allow for a rising and falling motion of the tables, and also
for the difference in position which takes place on the tables being a
swung from one position to another round the pillar.
It will be seen from Fig. 1 that the level of floor line required for
the lathe is necessarily higher than that required for the drilling and

page_text: in
slotting machine, we may therefore sink the foundation plate i, i¹,
a pit of the necessary depth, or we may mount the lathe portion of
the machine on a raised platform as shewn in the Drawing in which
case the platform should be sufficiently extensive for the man to stand
on it when he is using the shaping and boring machines.
Although the machine described is one capable of turning, shaping,
drilling, slotting, and boring, it is clear that machines on the same
principle can be constructed for performing two only or more of the
operations.
In witness whereof, we, the said Alexander Donald and Albert
James Atkey, have hereunto set our hands and seals, this Sixth
day of November, in the year of our Lord One thousand eight
and seventy-three.
ALEXANDER DONALD.
(L.S.)
ALBERT JAMES ATKEY. (L.S.)