Year: 1886

page_text: We JOHN EDEY of 10 St. Swithins Lane in the City of London Chartered
Accountant and GEORGE WRIGHT of Cottenham Road Rotherham Engineer 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 :-
The object of this invention is to facilitate the means of boring, turning, tapping,
and chasing, various steam and other brass fittings where such are required in
quantities, and also where one or more parts require to be tapped, or chased, at the
same fixing.
Fig. 1 is an end elevation.
Fig. 2 a plan.
Fig. 3 front elevation.
Fig. 4 is a section cut through centre of slide marked i & ?, showing all working
parts.
Fig. 5 is an end view of the casting 9 & handle q'.
a are the legs upon which the gantry b is bolted.
b is the gantry;
c is the rack which is bolted to the gantry front.
d is the pinion which works in the rack and gives motion to the saddle by turning
the handle e.
e is the handle which is fastened on the pinion shaft, upon this shaft the pinion d
is keyed.
f is a bracket bolted to gantry end, to form an extension so as to carry bracket g.
g is a bracket which is bolted upon f, to carry the stud end j, and also one end of
the back shaft o.

page_text: hh are two short guide screws which fit upon a socket that revolves on the stud j,
this socket is driven by the spur wheels k, the small wheel being keyed on to the
Lathe spindle, Any pitch of guide screw can be put on to suit the work required.
i is a casting which is keyed upon the back shaft o, in this casting are two circular
slides, The back of these castings in the centre are fork shaped, like the jaw of a
spanner, and a small eccentric spindle passes through both, the eccentrics being at
right angles, On the extreme end of this spindle is keyed the wheel, This wheel
is a plate wheel, and has a circular groove cut in one half of it, There is a stud
screwed into i, which works into this groove, so that by turning the wheel half round,
it raises one of the slides, and lowers the other, and vice versa, In these moveable
slides are inserted a piece of brass, the end of which is cut to suit the guide screw
beneath, it acting as a nut, These nuts are adjusted by means of a central screw,
which is worked by the two small wheels at the top of
j is a stud, one end of which is screwed into the headstock I, and the other is
carried by the bracket g.
kk are two spur wheels, having a ratio of 2 to 1. The small one being keyed on
to the lathe spindle, and the other on the end of the socket which carries both guide
screws, This socket is taper where the guide screws fit, they being screwed on by
means of nuts from the outside.
I is the fast headstock, on the spindle of the headstock a cone pulley runs loose, the
large speed of this pulley l', is bored out taper.
On the other end of the spindle a circular casting works on a sliding key, one
part of which is turned to the same taper as the cone, and the other has a circular
groove inserted in it to throw it in and out of gear with the cones. This is accomplished
by a fork lever on a short spindle which is carried from the headstock by two brackets
under the centre, The fork ends of this lever are shod with brass to suit the groove
in the casting, On the outer end of this spindle in front of the lathe, is fastened the
handle m, The lifting up of this handle puts the two cones into gear, and so drives
the lathe by friction.
On pressing the handle down the minor cone is withdrawn, and the lathe stops
instantaneously, The cone pulley is always running, and a collar is fastened on the
spindle each side of the cone to keep the same in its place.
m is the handle by which the lathe is started and stopped.
n is a two jawed chuck which is screwed on the end of the spindle for holding the
work, the jaws being brought together by means of a left and right hand screw,
In the face of the loose jaws is planed a groove, so that pieces of any shape can be
screwed to suit the work required.
o is the back shaft, upon which are keyed the casting i, and the chasing rest
p is a casting which is bolted on to the gantry, and serves as a stop for the chasing
rest, and determines the distance it shall fall, In the top part of it is fitted a piece
of hardened steel, upon which the bottom of the chasing rest slides when it is in
operation.
is the chasing rest, the back casting being keyed upon shaft o, The front of this
casting is circular, and is bored and faced, Into this casting, a second casting having
a circular shank is fitted, and is screwed up by means of a nut, which is made so that
the second casting will just revolve by hand without play, The face of this second
casting is planed to receive two small slide rests, which rests carry the chasing or
turning tools required.
The second casting is prevented from turning round by means of a bolt with a
taper end, which is held up by a spring shown in figure 2, This bolt is withdrawn
by pushing back the side handle q
The casting carrying these tool boxes can be turned so as to bring either tool to the
front.
In each end of the revolving casting is planed a groove, into which is inserted a
piece of hardened steel the whole breadth, a hole being bored through this steel, into
which is inserted a small spiral spring.

page_text: At the outer end of these springs and inserted into the hardened steel, is a circular
steel slide, the end of which is round, and hardened, and stands below the face of the
hardened steel in the groove, about one sixteenth of an inch.
r is a bracket which works in a slide and carries the end of the back shaft o, This
can be slided forward according to the work required.
s is the saddle which carries the cross slide t, This slide is drawn to and fro by
means of a screw and nut, worked by a handle in front.
t is the cross slide which carries the top rest, On the front of the cross slide a
lever is fastened on a stud, on the bottom of this lever is a pin, and a hole is bored
in the saddle that this pin fits, so that when the cross slide is propelled with a screw
until the pin is over the hole, the lever can then be pressed down, and the centre of
the turret is then in the centre of the lathe, On the other end of the cross slide is a
bracket which carries the pinion box w.
is the top rest which works parallel with the gantry, This rest carries the turret,
and is also the turret holder, this turret holder slides parallel with the gantry also,
It can also be drawn in a cross direction by the cross-slide, on lifting the pin out of
the saddle, The turret holder is propelled parallel with the saddle by means of a
screw in the cross slide, and a half nut in the turret holder, This nut is lifted in and
out of gear by means of a small eccentric spindle, with a small wheel to twist it on
the front, the screw being driven by a pair of skew-gear, or mitre wheels, worked by
a handle in front.
At the front of the turret holder is a small spring catch, having an internal piece
that springs in a groove, There are also 6 grooves in the face of the turret, so that
when the turret is pulled round while the grooves come over the groove in the turret
holder, the spring catch passes into the groove, and so holds the turret in its proper
position to be propelled forward.
is the turret which is fitted with 6 holders for holding centres, tools, drills, taps,
and other requisites required, When put in position, it is tightened down before
using, by means of the top lever which acts as a nut.
.
When it is used for drilling, or tapping, the half nut is lifted from the screw by
the eccentric spindle, and the turret holder with turret is propelled parallel with the
gantry by means of a rack a, which is screwed to the turret holder and worked with
the pinion y, by means of a handle from the top of the pinion cap z.
to is the pinion box; which carries the pinion y, which works the rack 2.
x is the rack which is fastened to turret holder, and is worked by pinion y. The
screw at the end of a serves to adjust the distance when used for boring, if set, by
the screw point coming in contact with the pinion box w.
y is the pinion which propels the rack parallel with the gantry.
is the cap which covers the pinion box, and acts also to steady the top end of the
pinion shaft.
We will now describe its working, if the article to be turned and screwed is such
that can be done in a pair of centres, take off the two-jawed chuck, and put the
centre in the fast head spindle, or in a carrying chuck, on the outside if preferable,
put a centre in one of the tool holders of the turret rest, and bring the saddle forward
to the desired length, then lock the saddle fast by pulling the handle d on plan over
the pinion d and tighten the articles between the centres by means of the screw in
the top rest, slacken the key which carries the casting 9 on the back shaft, and slide
it upon the back shaft o until the point of the tool stands over the turret centre point,
then slide the casting p on the gantry until it comes about midway in the casting q,
then pull down the handle of the rest 9 until the steel face in p and also in q meet,
Then screw down the rest and carrying the turning tool sufficiently low to form the
diameter required, also place a chasing tool in the other tool holder, the cutting edges
of both tools require to be opposite each other.
In this case they will require a guide screw suitable for the pitch required, put on
as shown in front elevation, also a fine thread guide screw for the travis, put on at
the same time, with their nuts to match the guide screws, then pull down the lever •

page_text: of the chasing rest 9, and bring down the nut as shown in guide screw in front
elevation.
The lathe being now started the nut will travel on the screw, bringing with it the
back shaft and tool holder, and so turn the work in the centres, When the tool has
got across the work, let the handle of the chasing rest go up, and the balance weight
shown in end elevation will throw the tool back out of the way.
If the article should not be as small as required by the first cut, screw down the
rest a little and repeat the operation, When once one is got right, the two steel faces
keep all future articles to the same size.
Having done the turning, pross the lever q' back at the side of the tool holder,
which liberates the same, turn the tool holder half way round, let go the side handle q¹
and the tool holder will lock itself.
The chasing tool now stands in the same position as the turning tool did, turn the
small wheel in the nut holder over the guide screw half round, which will withdraw
the nut now shown in position, and put the other one into gear.
Having started the lathe, pull down the lever of the chasing rest 9, and the tool
will then cut the thread, which if not exactly the right size, proceed as described in
turning.
When small articles required to be chucked to hore and tap them, they are bored
and tapped with the turret rest, the drills and taps being placed in the holders of
the turret rest, the drills being traversed through the hole by the rack and pinion
motion.
When the hole is bored, the tap in the turret is brought to the front, the workman
having the friction lever of the cone in the left hand, he brings the tap forward with
the rack and pinion motion by the right hand, and when the tap has run in the hole
sufficiently far, he stops the lathe instantaneously, by pressing down the friction lever,
which not only withdraws the power, but also acts as a break when pressed down.
The lathe being now stopped with the tap in the hole, This gives time to reverse
the belts of the overhead motion, which runs the lathe in a contrary direction, He
then leaves loose of the rack and pinion motion handle, lifts the friction lever up, the
lathe runs in a contrary direction, and so unscrews the tap out of the hole.
When large chuck work requires doing, the turning and boring is done by drills
and tools in the turret rest, and the chasing is done with the chasing rest.
When threads of two different pitches are required on the same article, two guide
screws and nuts of the required pitch must be put on, and worked the same as far
outside turning.
The stop on the extension piece f is to prevent the screw tool lifting too high
before it has left the hole, which would damage the thread by the back of the tool.
When the chasing tool is progressing forward, the gaurd pin f' in ii passes under
the stop in the extension piece, which requires to be set, so that the nut can only just
lift out of gear of guide screw, until the tool is brought clear of the work, when the
pin will be clear of the guard, when the tool box will be drawn back by means of the
balance weight, and spring on shaft o.
The changing of the threads is done as described in outside turning, the steel faces
always determine the size.
The above articles may be varied in number size or shape without departing from
the principles of this specification.
Having now particularly described and ascertained the nature of our said Invention,
and in what manner the saine is to be performed, we declare that what we claim is.
1. The double falling adjustable nut holder marked i with its reversing arrangement,
also the guard which prevents the tool from rising too high before it has left
the hole with all its arrangements as shown in drawing and described in specification.
Also
2. The cone friction arrangement on lathe spindle marked m, as shown in drawing
and described in specification. Also

page_text: 3. The stop arrangement which is screwed upon gantry marked p, which determines
the size of the articles to be chased, shown in drawing and described specification.
Also
4. The reversible double chasing rests marked 9, with its double slide rest, and
revolving motion, together with all its parts as shown in drawing and described in
specification. Also
5. The double motion, also the rack and scrow motion as applied to the turret
rests, marked t, w, x, y, z, as shown in drawing and described in specification.
Dated this 11th day of November 1885.
Witness to the signatures of the said
John Edey and George Wright,
WILLIAM WHITFIELD,
Elm Tree House,
Moorgate, Rotherham.
Clerk to Messrs. Edey, Simpson & Co., Sheffield.
JOHN EDEY.
GEO. WRIGHT.