Improvements in Milling Apparatus to use in conjunction with a Lathe.
Year: 1898

page_text: Date of Application, 14th May, 1898
Complete Specification Left, 11th Mar., 1899-Accepted, 29th Apr.,
1899
PROVISIONAL DI MOTIVATION
Improvements in Milling Apparatus to use in conjunction with a
Lathe.
I, WILLIAM HENRY GREATOREX, of 11, Forthbridge Road, Clapham Common,
in the County of Surrey, Brass-finisher, do hereby declare the nature of this
invention to be as follows:
My invention relates to an apparatus that may be attached to an ordinary lathe
whereby the operations of milling slott-drilling keyway-cutting and fluting may be
performed.
To carry out my invention I attach when in use by means of a bolt and nut to
the bed of the lathe, and at right angles with its length, a strong slide a screw
passes from end to end of the said slide, and engages with a nut attached to the
top plate of the slide and is actuated by a handle fitted to the end of the screw.
I will call this the lateral slide for the purposes of this specification.
A suitable length of the top plate of the lateral slide is extended on both sides,
in a rectangular direction to form a bed for a plate to traverse in a horizontal
direction, the said plate is actuated in the following manner, On that end of the
horizontal bed farthest from the headstock of the lathe I fit a vertical bracket
bored parallel to a centre line drawn through the horizontal bed-to recieve the
plain shank of a screw with a hand wheel attached thereto. The worm of the
said screw engages with a thread cut in a vertical bracket attached to the horizontal
slide plate.
I will for the purposes of this specification call this the horizontal slide.
On the travelling plate of the horizontal slide. I fit a revolving socket the
flange of which is set out with one or more series of division holes-the said socket
is controlled by a lever fitted with a pin to engage with the said division holes
the lever is held in position with a spiral spring-the pin on which the lever works
passes through the horizontal plate the said plate is slotted out-concentric with
the revolving socket, a suitable distance to allow the pin to be adjusted in such a
position that the division holes may be controlled by the pin on the end of the lever
when the revolving socket is in an arbitrary position.
To obtain the vertical adjustment I have a pillar with a worm cut on its
cylindrical surface the said pillar is made to slide in the bore of the revolving
socket, and is actuated by a bonnett screwed out to engage the beforementioned
worm on the vertical pillar.
The said bonnett is secured in such a manner to the revolving socket, that it will
freely turn so as to actuate the vertical pillar.
To prevent the vertical pillar from turning with the bonnett the end of a stud
screwed in the body of the revolving socket engages with a slott through the
length of the said pillar. A tightening screw is used on the opposite side of the
revolving socket to secure the vertical pillar while the cutter is doing its work.
The object to be operated upon is in all cases chucked in a suitable manner to the
vertical pillar and the cutter is run in the headstock of the lathe.

page_text: To hold the revolving socket firmly in position while a cut is being taken I have
a V block fitted into the top plate of the horizontal slide and a pressure screw is
brought to bear upon the said block to press it against the washer of the
revolving socket.
1900
· COMPLETE SPECIFICATION.
Improvements in Milling Apparatus to use in conjunction with a
Lathe.
I, WILLIAM HENRY GREATOREX, of 11, Forthbridge Road, Clapham Common,
in the County of Surrey, Brassfinisher, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
My invention relates to an apparatus that may be attached to an ordinary
lathe whereby the operations of milling, slott-drilling keyway cutting and
fluting may, be performed.
To carry out my said invention I attach when in use by means of a bolt and
nut, f,f a slide, a, to the bed of a lathe and parallel with its length, Figs. 1
and 2.
A screw, e, engaging with a nut, y, attached to the top plate, c, of the slide a,
passes from end to end of the bed of the slide. The said screw, e, is actuated by the
handle, g, Fig. 1 fitted to the end of the screw e.
This forms the lateral slide.
The top plate, c, Figs. 1, 2, is extended in a horizontal direction to form a bed to
be traversed by the plate, b. The said plate, b, is actuated in the following manner,
On the end of the horizontal bed, c, plate 1, 2, I attach a vertical bracket, d,
bored parallel to a centre line drawn through the bed, c, to engage the plain shank
of the screw, e¹. The said screw is actuated by the wheel, gl.
The worm of the said screw, el, engages with a thread cut in the vertical
bracket, d¹, attached to the travelling plate of the horizontal slide, b.
The above forms the horizontal slide.
On the before mentioned plate, b, I fit a socket, w, the flange of the said socket
is set out with one or more series of division holes, h', Fig. 1.
The said socket, n, is made to revolve on the plate, b, and is held in position a
working fit, by means of the taper washer, h, Fig. 1 on the under side of the
plate, b.
The face of the revolving socket, n, abuts on the narrow face of the taper washer, h,
the two being held together by. set screws shewn at i, i, Fig. 1.
To hold the revolving socket firmly in position during the taking a cut
the V block, t, Figs. 1, 2, is pressed against the washer, h, by the set screw, s.
The beforementioned division holes, h¹, Fig. 1, of the revolving socket, n, are
controlled by the lever I Fig. 2, the pin I', engaging with the holes in the revolving
socket as determined by the operator.
The above mentioned lever, I, works on the stud, v, Fig. 2, the said stud v
passes from the under side of the plate, b, through a slot, u, the said slot being cut
concentric with the revolving socket, n, to allow the adjustment of the lever, I, to
the arbitrary position of the revolving socket, n.
To hold the pin, I', firmly in position when engaging with the division holes, h¹,
Fig. 1, the bracket, d, is chambered out to recieve the ram m, the said ram is pressed
against the lever I, by the spiral spring, k, held in compression by the nut, k¹.

page_text: The vertical adjustment is obtained in the following manner
The pillar n', Fig. 1, is made to slide in the bore of the revolving socket n, and
the worm cut on the cylindrical surface of the said pillar n¹ engages with a thread
cut in the bonnett, o, the shank of the bonnet, o, checks into the enlargement of the
bore of the revolving socket, n, Fig. 1, the said bonnett being held in position by
the following device.
The groove, P, cut in the shank of the bonnett, o, Fig. 1, is fitted with a split
ring, p', the said split ring is secured to the revolving socket n, by set screws q, q',
allowing sufficient play for the bonnett to turn in its place.
The said bonnett, O, may be turned by the hand or actuated by means of a key
made to engage the holes, x, and notches, z, Fig. 2 and so raise and lower the
pillar, n', as desired.
To prevent the pillar, n¹, turning with the bonnett, o, when being adjusted, two
slots, w, w¹, Fig. 1, are cut in a vertical direction and on opposite sides of the pillar, n',
to engage the ends of two set screws, 7, r¹, turned down to fit the said slots, the
body of the revolving socket being tapped out to recieve the set screws as shewn
Fig. 1.
The set screw, r, is also used to secure the pillar, n', during the taking a cut, the
screw r, is a fixture.
To use the apparatus.
The object to be operated upon is chucked in the pillar, n¹, at, z, Fig. 1, and is
thus under the control of the lateral slide, a, the horizontal slide, c, and the
vertical adjustment as herein before explained-a suitable cutter is run in the
headstock of the lathe and so the operations of milling, slottdrilling, keyway-
cutting and fluting are performed.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. The apparatus for the purposes specified substantially as described and
shewn.
2. The combination in a milling apparatus for obtaining the vertical adjust-
ment-namely-A vertical pillar actuated by a bonnett, with provision for holding
the same in position also the means for preventing the pillar from turning with the
bonnett, and fixing the pillar when in operation substantially as described and
shewn.
3. The combination in a milling apparatus for obtaining the horizontal feed,
namely, A.travelling plate actuated by a screw in conjunction with the brackets on
the plate and lateral slide substantially as described and shewn.
4. The combination in a milling apparatus of a lever for controlling the division
holes in the revolving socket with the method for adjusting the same to the
arbitrary position of the revolving socket substantially as described and shewn.
5. The combination in a milling apparatus for securing the rigidity of the
revolving socket of a V block and set bolt substantially as described and shewn.
Dated this 11th day of March 1899.
WILLIAM HENRY GREATOREX.