Improvements in Machinery for Turning and Boring Hollow Ware.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Machinery for Turning and Boring Hollow Ware.
We, ARTHUR MALPASS, of 102, Pleasant Street, West Bromwich, in the County
of Stafford, Pattern Maker, and RICHARD CLAYTON, of Deepfields, in the County of
Stafford, Ironfounder, do hereby declare the nature of my said invention to be as
follows:-
Our invention has for its object improvements in machinery for turning and
boring hollow ware by a self acting arrangement which enables us to more easily
and quickly perform the operation and at the same time impart a better finish
thus reducing the cost of production.
In carrying our invention into practice we mount a slide on a suitable bed and
on this slide we mount two cross slides each carrying a head stock in which we
mount our adjustable tool holder. This tool holder is fixed to a cross spindle
mounted between the arms of the head stock, a spring being fixed on either side
between the said arms and an adjustable collar fixed on the spindle. Mounted
in these tool holders is a hollow sleeve in which the turning or boring tool is held.
Fixed to the side of the bed is a screw shaft and a guide rod and on this screw
shaft and guide rod we mount two guides on the top of which we fix a stud which
studs take into suitably shaped slots formed in the cross slides. Fixed between
the head stocks is a dummy guide provided with a suitably shaped slot in which
a peg fixed to one of the guides works. Our arrangement for holding the sauce-
pan or other hollow ware while being operated upon by the tool consists of a face
plate provided with three or more adjustable clamps the edges of which are
rabbetted so as to firmly grip the end of the sauce-pan or other article. Connected
to this face plate by three or more adjustable pin is a ring also provided with
adjustable clamps and this ring passes over the saucepan or other article and grips
it above the swell thus firmly holding it in position.
The action of the machine is as follows:
-
When the saucepan has been fixed in our clamping device the machine is
started and the revolving of the screw shaft causes the guides, which are mounted
thereon, to travel forward; and the stud on the guide farthest away from the
cutting edge of the tool and the stud working in the dummy guide causes the
tool to advance and follow the form of the interior of the saucepan until it has
reached the bottom but the stud on the other guide moves in the slot on the
cross slide without operating it until the tool has finished turning or boring
the sides of the saucepan then the studs on both guides cause the cross slides to
move across the bed thus allowing the tool to operate on the bottom of the sauce-
pan. When this portion of the turning or boring has been performed the band
which drives the screw shaft is caused to pass onto another pulley and the belt on
the coned pulley is moved onto the small end of the cone which action sets in
motion a number of gear wheels which cause the said screw shaft to revolve at a
slower speed in the reverse direction by which means the tool is caused to travel
slower also and the saucepan to revolve at a quicker speed and as the tool performs

page_text: the same operation in the reverse direction at a much slower rate while the sauce
pan is revolving quicker it imparts a polish or better finish to the sauce pan. For
the purpose of throwing the machine in and out of gear we mount a loose pulley
at the large end of the ordinary driving cone.
Dated this lot day of Mural 1908
We, ARTHUR MALPASS of 102, Pleasant Street, West Bromwich, in the County
of Stafford, Pattern Maker, and RICHARD CLAYTON, of Deepfields, in the County of
Stafford, Ironfounder, do hereby declare the nature of our said invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement;-
Our invention has for its object improvements in machinery for turning and
boring hollow-ware by a self acting arrangement which enables us to more easily
and quickly perform the operation and at the same time impart a better finish
thus reducing the cost of production.
In carrying our invention into practice we mount two slides on a suitable bed
and on these slides we mount two cross slides each carrying a head stock in which
we mount our adjustable tool holder. This tool holder is supported by two cross
spindles mounted between the arms of the head stocks a spring being fixed on
either side between the said arms and an adjustable collar fixed on the spindle.
Mounted in these tool holders is a hollow sleeve in which the turning or boring
tool is held. Fixed to the side of the bed is a screw shaft on which we mount two
guides and on the top of these guides we fix a stud which studs take into suitably
shaped slots formed in the cross slides. Fixed between the head stocks is a dummy
guide provided with a suitable shaped slot in which a peg fixed to the rear cross
slide works. Our arrangement for holding the saucepan or other hollow ware
while being operated upon by the tool consists of a face plate provided with
three or more adjustable clamps the edges of which are rabbetted so as to firmly
grip the end of the saucepan or other article. Connected to this face plate by
three or more adjustable pins is a ring also provided with adjustable clamps and
this ring passes over the saucepan or other article and grips it above the swell
thus firmly holding it in position.
In order that our invention may be more clearly understood and easily carried
into practical effect we have appended hereunto three double sized sheets of
drawings upon which we have illustrated an example of our improved machinery
for turning and boring hollow ware.
Figure 1 is a front elevation of our hollow ware turning and boring machine.
Figure 2 is a plan view of Figure 1.
Figure 3 is a right hand end elevation shewing a portion of the machine as
shewn at Figure 1.
Figure 4 is a left hand end elevation shewing a portion of the machine as shewn
at Figure 1.
Figure 5 is an enlarged end elevation shewing the levers for starting the machine
and also for reversing the motion of the screw shaft.

page_text: sigure o is a plan view or the cross slide and dummy guides.
Figure G is also a plan view shewing the cross slides in their initial positions
before starting the machine.
Figure 7 is a similar view to Figure 6 shewing the tool for turning the bead
on the edge of a saucepan.
Figure 8 is a sectional front elevation of Figure 7 taken on the line x-y.
Figure 9 is a front elevation of a modified form of change gear.
Figure 10 is a plan view of Figure 9.
Figs. 11 & 12 are side elevations of Fig. 9.
In carrying our invention into practice we mount the fixed slide B and the
moveable slide B on the bed or frame A and on these slides we mount the cross
slides D and D' which carry the head stocks E and E in which we mount our
adjustable tool holders F and F¹. These tool holders are supported by the cross
spindles and e³ mounted between the arms of the head stocks the springs e
which are mounted on these spindles between the said arms and the adjustable
collars e³ on either side of the tool holders are provided for the purpose of pressing
the tool against the work and also to compensate for any irregularity in the
casting under operation. Mounted in these tool holders is the bar or rod F
which forms the tool holder proper. The front end of the bar is formed round
with a groove f3 on either side, the turning or boring tool being fitted into one of
these grooves and held by a collar passing over the tool holder F2. In some cases
we fit a tool into each of the grooves f3 so that when the sides of the saucepan
have been turned by the one tool both tools then commence to turn the bottom
of the saucepan thus performing this operation much quicker. The spring f
placed between the tool holder fi and the collar f is provided for the purpose of
allowing the tool when operating upon the bottom of the saucepan to give, pro-
viding there are any irregularities. The rear end of the bar f2 is formed square
and the hole in the tool holder f in which this end of the bar fits is formed
square to correspond. Fitted to the side of the bed is the slide H which is caused
to travel to and fro by the screw shaft H' supported in suitable brackets fixed to
either end of the bed and mounted on this slide are the guides H2 and H³ on the
top of which we fix the studs h and h. These studs take into the slots d² and d³
formed on the underside of the cross slides the slots being shaped as shewn so
that as the studs and he travel along in the slots they move slides D and D¹
across the bed until they have reached the position as shewn at Figure 6. Fixed
to the front cross slide D between the head stocks is the dummy guide J having
at its other end the slot j¹ in which the peg d fixed to the upper surface of the
cross slide 1) works. The slide B₁ advances by the movement of the cross slide D¹
which cross slide is operated by the slide H through the action of the stud h5
working in the slot and as this cross slide D' forces the slide B forwards the
stud d fixed on the face of the cross slide and working in the slot of the dummy
guide J causes the cross slide D₁ to move across the bed but while the stud
is traversing the right angle or first portion of the slot d³ the cross slide I remains
stationary as the portion of the slot d in which the stud 4 travels during this
movement is parallel with the centre line of the bed. When the studs h¹ and ha
have reached these portions of their slots d² d³ and the stud traversed the
length of the slot and as the slide H which carries these studs h and h³ con-
tinues to advance the studs h and h which always move parallel to the centre
line of the bed traverse the remaining portion of their slots thereby causing the
cross slides 1) and D¹ to traverse across the bed as clearly shewn at Figures 3
and 6. The motion given to the cross slide D¹ by the dummy guide causes the
tool to follow the shape of the interior of the saucepan which is held while being
operated upon by the adjustable clamps fitted to the face plate I mounted on
the front end of shaft S which shaft is mounted in bearings in the head stock L
as clearly shewn at Figures 1 and 2. The edges of the clamps k¹ are rabbetted
so as to hold the end of the saucepan. Connected to the face plate K by the adjust-
able pins is the ring also provided with the adjustable clamps . This

page_text: ring passes over the saucepan and the clamps k grip it above the swell thus
firmly holding it in position. The springs which are placed between the heads
of the pins and the back of the face plate K are provided for the purpose of
firmly holding or pressing the saucepan against the rabbetted edges of the
clamps Also mounted on the shaft S between the head stock L is the coned
pulley L which is provided at the large end with the loose pulley L2 for passing
the driving band onto when throwing the machine out of gear. On the rear
end of the shaft S we fix the pulley L and this pulley transmits motion to the
screw shaft H on the end of which the pulleys M and are fixed with the loose
pulley M² in the centre. The pulley which is also mounted loosely on the
screw shaft H is formed integral with the gear wheel m³ which gears with the
gear wheel mounted on a short shaft fixed to the side of the bed and formed
integral with this gear wheel is the gear wheel m³ which gears with the wheel mo
mounted on another shaft also fixed to the side of the bed and this gear wheel m³
gears with the gear wheel m fixed on the screw shaft H. It will thus be seen
that when the belt is transferred from the pulley M to the pulley M that the
motion of the screw shaft H is reversed and the speed reduced.
In order to automatically reverse the motion of the screw shaft H we attach
the bar N to the slide H and on the front end of this bar we provide the stud a¹
which as the slide advances strikes against the lower end of the cranked lever P
thereby drawing the stud out of the slot 24. This lever P is connected to
the lever P¹ by the cross shaft P² (see Fig. 5) and is provided for the purpose of
throwing the machine into gear & also for automatically moving the belt fork
along the cone pulleys L' and L2 as hereinafter described. Also fixed to the
bar N is the stud which as the slide H advances strikes against the lever R
pivoted at to the side of the bed. This lever R is provided for the purpose of
moving the band across the pulleys M, M and M2, and this is accomplished by the
slotted end of this lever R working on the stud 2 which operates or moves the
bar carrying the belt fork thus transferring the belt from the pulley M to
the pulley and as this pulley M¹ is loose on the shaft H and integral with
the gear wheel m³ it transmits motion to the gear wheel m which is integral with
the gear wheel m³ gearing with the gear wheel me which wheel m6 gears with the
gear wheel mi fixed on the shaft H as shewn at Fig. 4 thus reversing the motion
of the shaft. The finger or projection n³ formed on or attached to the bar N
strikes against the lever R2 also pivoted at r¹ to the side of the bed which lever
moves the belt across the coned pulley L¹. By this means it will be seen that
the motion of the screw shaft is reversed & its speed decreased by the change
of gear and the speed of the coned pulley increased by the belt being moved onto
a smaller portion of the cone pulley thereby increasing the speed of the saucepan,
which imparts a better finish or polish to the article under operation.
In order to turn the bead on the edge of the saucepan we mount the tool rest d
Formed on
so as to swivel on the support do which is fixed to the cross slide D.
this tool rest is the projection against which the striker de fixed on the cross
slide D bears. It will thus be seen that as the cross slide 11 advances the
striker will bear against the projection d and force the tool d fixed in the
tool rest against the beading of the saucepan by which means the beading is
turned, but as the cross slide continues to advance forward and across the bed by
the action of the stud in the dummy guide the striker slides past the projection d'
and the tool rest is forced back to its normal position by the action of the
spring do as clearly shewn at Figures 7 and 8.
The action of the machine is as follows:-
When the saucepan has been fixed in our clamping device the studs h, he and d
are in the positions in their respective slots as shewn at Figure 6, the machine
is then started by lifting the lever T so that the projection trests on the top
of the stud 2 fixed to the slide H, and as this lever T is pivoted at 13 to the
lever R2 it will be seen that when this lever is raised it allows the operator to
move the weighted lever P¹ in the direction of the arrow which action moves

page_text: the strap guide from the loose pulley onto the large end of the cone pulley thus
starting the machine and as the screw shaft H₁ revolves it causes the slide H
to travel forwards and also the guides H2 and H³ the stud 5 on the guide H³
causing the slide B¹ to travel forwards carrying with it the cross slide D¹ and
stud on the upper surface of the cross slide D' which stud works in the slot
in the dummy guide causing the tool to advance and follow the form of the interior
of the saucepan until it has reached the bottom, but the stud h on the guide H
moves in the slot on the cross slide D without operating the slide B until the
tool has finished turning or boring the sides of the saucepan then the studs h
and on both guidés cause the cross slides to move across the bed thus allowing
the tool to operate on the bottom of the saucepan.
When the tool has traversed
the interior of the saucepan the stud on the bar N will have reached the
position as shewn at Figures 1 and 2 and tilted the lever P thereby drawing the
stud 3 on the end of the cranked lever P out of the hook or catch p on the end
of the lever R³ thus allowing the lever R2 to be raised or lifted by the finger n³
which lever moves the bar V so as to bring the belt guide onto the small end of
the cone pulley L. The bar V₁ is moved almost simultaneously with the bar V
by the lever R by the action of the stud 2 on the bar N striking against the lower
end of this bar thereby moving the belt guides from the pulley M to the pulley M¹
by which means the motion of the train of gear wheels which are connected to
this pulley is reversed.
At Figures 9, 10, 11 and 12 we have shewn a modified form of our arrangement
for reversing the motion of the screw shaft H¹ which consists of the step cones W
formed integral with the gear wheels w¹ and w³ mounted loosely on the shaft S.
The gear wheel w gears with the wheel mounted loosely on the shaft X which
runs in bearings mounted in brackets connected to the head stock L and this
gear wheel 3 gears with the wheel w mounted loosely on the screw shaft H¹.
It will thus be seen when the clutches W14 and W15 which are mounted on the
shafts X and H¹ respectively so as to be free to slide thereon are moved to engage
with the wheel w³ and wt by the weighted lever which is connected to the lower
end of a slotted lever working on a stud that the gear wheel we will impart motion
to the gear wheels w³ and w and as the gear wheel w is keyed onto the shaft X
this wheel imparts motion to the wheel w keyed on to the shaft S thus causing this
shaft to revolve also shaft H¹. To reverse the motion of the screw shaft a stud
fixed to the bar N strikes against the lower end of the above mentioned slotted
lever thereby causing the clutches to engage with the gear wheels and w
mounted loosely on the shafts X and H' respectively. The wheel gears with
the wheel 2 thus causing the shaft S to revolve at a greater speed through the
medium of the wheels wand w. The wheel w which is integral with the
wheel gears with the wheel 10 and integral with this wheel is the gear wheel wll
gearing with the wheel w8 by which means a slower motion is imparted to the
screw shaft.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is;-
CLAIMS.
First In machinery for turning and boring hollow ware mounting the tool
holder proper such as F2 in the tool holder such as F and F which tool holders
are supported by the cross spindles 2 and 3 having the springs on either side
so as to allow the tool to follow any irregularities in the internal shape or .con-
figuration of the articles under operation in the manner substantially as herein
set forth and as shewn upon the drawings.
Second: In machinery for turning and boring hollow ware operating the
slides such as B and B and the cross slides such as D and D' by guides such as
H2 and H3 or their equivalents connected to the slide H and mounted on a screw
shaft such as H¹, the said cross slides D¹ or its equivalent being further operated

page_text: by a dummy guide such as J or its equivalent so as to cause the tool to follow
the internal shape or configuration of the articles under operation in the manner
substantially as herein set forth and as shewn upon the drawings.
Third: In machinery for turning and boring hollow ware automatically revers-
ing and decreasing the speed of the screw shaft such as H' and increasing the
speed of the shaft S so that the return cut of the tool imparts a fine polish to the
article under operation in the manner substantially as herein set forth and as
shewn upon the drawings.
Fourth In machinery for turning and boring hollow ware clamping or holding
the article under operation in a face plate such as K having adjustable clamps
and a ring such as ³ connected flexibly to the plate K also having adjustable
clamps in the manner and for the purpose substantially as herein set forth and
as shewn upon the accompanying sheets of drawings.
Fifth In machinery for turning and boring hollow ware the means substan-
tially as herein shewn and described for turning the beading or edge of the article
under operation.
8011
1
2000
ARTHUR MALPASS,
RICHARD CLAYTON,
By George Barker,
Fellow of the Chartered Institute of Patent Agents,
77, Colmore Row, Birmingham
Agent for Applicants.