IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CUTTING, GROOVING AND SHAPING METAL
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
We, JOHN CRAVEN, of the Victoria Foundry, Leeds, in the County of York,
Engineer, and GEORGE BARUCH WOOD, of Ellesmere Villa, Sharrow, Sheffield, in
the said County, Engineer, do hereby declare the nature of said Invention for
'IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CUTTING, GROOVING AND
SHAPING METAL" to be as follows:-
"
Our Invention relates to machinery or apparatus of the kind wherein the
operations of cutting, grooving and shaping heavy metallic objects such as armour
plates and the like, are performed by means of a revolving cutter or cutters, either
constructed in one piece or (which we consider preferable) built up in sections,
such revolving cutter or cutters being mounted in an overhanging position on a
suitable mandrel carried by a sliding headstock capable of travelling automatically
over the object under treatment which is fixed on a suitably arranged bed or table
provided for the purpose. According to our Invention, in such a machine a bed
or gantry for carrying the cutter headstock, is so arranged as to be above the
object to be operated upon, and we provide for partial rotation of such bed or
gantry around the axis of the driving shaft that imparts motion to the revolving
cutter, so that the axis of the cutter may be caused to assume either a horizontal
or an angular attitude as may be required to suit the work to be done. The cutter
headstock is carried at the underside of the bed or gantry which is in a higher
position than the headstock in relation to the bed or table upon which objects to
be operated upon are fixed. The said bed or gantry (with the cutter and its
headstock) is carried at its ends by uprights or standards and is capable of being
by suitably arranged mechanism, swivelled around the axis of the first motion or
driving shaft of the machine. To enable the cutter or cutters to be sharpened
.without removing the same from the mandrel (or in the case of a sectionally
formed cutter, from the central stock carrying the cutting parts) we provide for
attaching to the machine, an emery or other grinding wheel mounted on a slide
and arranged to be driven from any convenient motor.
In a modified arrangement of machine according to our Invention, provided
with a bed or table such as above referred to upon which to fix articles to be
operated upon and with a sliding headstock and cutter or cutters similar to those
1

page_text: above mentioned, we dispense with the swivelling arrangement, and fix the bed or
gantry upon which the headstock and cutter or cutters are mounted, upon the bed
or table or other foundation that supports the object under treatment, thus the
cutter mandrel is maintained always in a horizontal position. Means for driving
it and a sharpening apparatus are provided as already described with reference to
the preceding arrangement.
Dated this Fifth day of February 1884.
JOHN CRAVEN.
GEORGE BARUCH WOOD.
W. Lloyd Wise,
Per J. G. Stokes,
Applicants' Agent.
COMPLETE SPECIFICATION.
We, JOHN CRAVEN, of the Victoria Foundry, Leeds, in the County of York,
Engineer, and GEORGE BARUCH WOOD, of Ellesmere. Villa, Sharrow, Sheffield, in
the said County, Engineer, do hereby declare the nature of our said Invention for
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CUTTING, GROOVING AND
SHAPING METAL" and in what manner the same is to be performed, to bo
particularly described and ascertained in and by the following statement :-
Our Invention relates to machinery or apparatus of the kind wherein the
operations of cutting, grooving, and shaping heavy metallic objects such as armour
plates and the like are performed by means of a revolving cutter or cutters, either
constructed in one piece, or (which we consider preferable) built up in sections,
such revolving cutter or cutters being mounted in an overhanging position on a
suitable mandrel carried by a sliding headstock capable of travelling automatically
over the object under treatment which is fixed on a suitably arranged bed or table
provided for the purpose.
According to our Invention, in such a machine, a bed or gantry for carrying the
cutter headstock, is so arranged as to be above the object to be operated upon, and
we provide for partial rotation of such bed or gantry around the axis of the driving
shaft that imparts motion to the revolving cutter, so that the axis of the cutter
may be caused to assume either a horizontal or an angular attitude as may be
required to suit the work to be done. The cutter headstock is carried at the
underside of the bed or gantry which is in a higher position than the headstock in
relation to the bed or table upon which objects to be operated upon are fixed.
The said bed or gantry (with the cutter and its headstock) is carried at its ends by
uprights or standards, and is capable of being by suitably arranged mechanism,
swivelled around the axis of the first motion or driving shaft of the machine.
To enable the cutter or cutters to be sharpened without removing the same
from the mandrel (or in the case of a sectionally formed cutter, from the central
stock carrying the cutting parts) we provide for attaching to the machine an
emery or other grinding wheel mounted on a slide and arranged to be driven from
any convenient motor.
•
&

page_text: In a modified arrangement of machine according to our Invention, provided with
a bed or table such as above referred to, upon which to fix articles to be operated
upon, and with a sliding headstock and cutter or cutters similar to those above-
mentioned, we dispense with the swivelling arrangement and fix the bed or gantry
upon which the headstock and cutter or cutters are mounted, upon the bed or
table or other foundation that supports the object under treatment, thus the cutter
mandrel is maintained always in a horizontal or parallel position in relation to the
said bed or table. Means for driving the cutter and a sharpening apparatus are
provided as already described with reference to the preceding arrangement, but as
the sharpening apparatus forms no part of this Invention it is not shewn in the
Drawings. Fig. 1, of the accompanying Drawings is a front elevation, and Fig. 2,
an end elevation of a machine for cutting, grooving and shaping metal, according
to our Invention, a, is the foundation bed or table of the machine upon which the
other parts of the machine, as also the object to be operated upon are mounted,
c, c, are the uprights or standards, d, is the bed or gantry mounted between the
standards c, c, in suchwise as to be capable of being turned about the axis of the
driving shaft e, by means of a handle on the shaft f.-gearing g, shaft h,
gearing i, i, and worms j, j (of which only one is shewn in the Drawings) taking
into the toothed segments k, k, on the uprights c, c,-, are the fast and loose
driving pulleys on the shaft e,-on this shaft is the worm m, taking into and driving
the wheel n, on the shaft o, on which is the pinion p, taking into and driving
the wheel q, and the cutter mandrel 9 1.-r, is the cutter built up in sections or
otherwise, for operating upon the object u, under treatment, a, is the headstock of
the cutter mandrel sliding automatically on the underside of the bed d, by means
of the worm v, on the driving shaft e, taking into and driving the wheel w, on the
shaft a, the outer end of this shaft and the end of the shaft y, are formed to receive
change gearing such as z, z, for effecting a variety of speeds to the screw t, and
cutter carriage 8. On the shaft y, is the worm a 1, taking into the wheel 61, on
the screw t, thus completing the system of feed gear. The worm a 1, is carried by
the fork lever ol, to which is attached the lever d1, by which the worm a 1, is
capable of being disengaged from the wheel 61, on the completion of a "cut." The
cutter and its carriage may then be moved back ready for another cut, by means
of the shaft e 1, helical wheels f1, and g 1,. the latter being keyed on the screw t.
When the machine is in motion the helical wheels fl, and gl, run idle.
u, represents the object under treatment and may be so placed that any part
of it may be operated upon. Figs. 3, and 4, are front and end elevations
respectively of a modification wherein the mandrel of the cutter is, as in the
preceding arrangement carried above the work to be operated upon. The carriage
sliding on the upper surface of a bed or gantry that is fixed upon the principal
bed or foundation of the machine. The position in which the tool can act upon
the work or object to be operated upon, is, in this case limited to the vicinity of
one or other of the ends. a, is the foundation or bed of the machine, b, is
the slide bed or gantry attached thereto. This has both a horizontal sliding
surface b¹, and a vertical sliding surface 63, and is provided with a V, 63, at the
lower part of the latter as shown in sectional elevation Fig. 5,-the screw d, for
traversing the cutter carriage c, being placed within the vertical surface 6', and as
near as possible to the cutter. The vertical surface b³, and the V, together prevent
any lateral movement of the cutter carriage c, upon the horizontal surface b¹, during
the operation of the cutter upon the work, as the heavier the cut, the greater the
pressure against the said vertical face 6º.
The screw d, is shewn provided with means to produce three rates of traverse,
two by the pulleys 1, 2, 3, 4, and the third by the fast and loose pulleys 5, and 6,
which are driven from any convenient source, then through mitre gear 8, 9, 10, to
the worm 11, taking into and driving the tangent wheel 12, on the said screw d.
This motion is capable of reversal by the lever 7, and said mitre gear 8, 9, 10,—
e, are the driving pulleys (fast and loose) f, is a pinion taking into and driving the
wheel g, on the worm shaft h, which in this case is shewn of square form (though

page_text: are not limited to this) i, is an endless screw or worm, taking into and driving
tangent wheel j, on the cutter mandrel k, which at the other end carries the
ating cutter. The axis or centre line of the mandrel k, is always in a horizontal
parallel position with that of the table or bed a, of the machine. The work or
ject under treatment in both forms of machine is indicated by the letter u.
Having now particularly described and ascertained the nature of our said
vention and in what manner the same is to be performed, we declare that what
claim is
•
1. In a machine of the kind above referred to for cutting, grooving and shaping
metal, arranging the bed carrying the cutter headstock above the work or
object to be operated upon, and so as to be capable of partial rotation or
swivelling movement about the axis of the shaft through which the
revolving cutter or cutters, is or are driven, whereby the axis of such cutter
or cutters may be caused to assume either a horizontal or an angular
position according to requirements substantially as described and illustrated.
in Figs. 1, and 2, of the Drawings.
2. The mode of mounting the bed d, between and securing the same to two
standards or uprights c, c, in such wise that it may be held in any required
position substantially as described with reference to Figs. 1, and 2, of the
Drawings.
3. Constructing the bed b, upon which the cutter carriage is mounted, with a
horizontal sliding surface b¹, a vertical sliding surface b³, and a V, slide 6³,
all substantially hereinabove described and shewn for the purposes set
forth.
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