Improvements in Machinery for Finishing Lasso Rings and other Metal Rings of a like kind.
Year: 1898

page_text: Date of Application, 31st Jan., 1898
Complete Specification Left, 30th Nov., 1898-Accepted, 21st Jan., 1899
Improvements in Machinery for Finishing Lasso Rings and other
Metal Rings of a like kind.
I, JAMES WILLIAM BROOKS, of 6, Caldmore Road, Walsall, Staffordshire, Manu-
facturer, do hereby declare the nature of this invention to be as follows :-
This invention consists of the herein described improvements in machinery for
turning and finishing metal lasso rings or other metal rings of a like kind. The said
lasso rings are usually turned and finished in a lathe by ordinary tools. This method
is comparatively slow and expensive. The object of this invention is to construct a
machine by which the said lasso rings can be turned outside and inside in a much
shorter space of time than heretofore and by unskilled labour.
In carrying out this invention I provide an expanding mandril which is divided longi-
tudinally into two or more parts jointed at one end to a chuck or collar carried by a
spindle preferably arranged vertically (or the said spindle may be arranged horizontally
or inclined) and adapted to revolve in suitable bearings in the machine frame.
The said spindle has means for moving it endwise in its bearings. The outside
of this inandrit has a small groove turned in it or is otherwise formed so that
when expanded it will fill the inside of the lasso ring which is to be turned.
The interior of the lasso ring has or may have one or more small pips cast on
it to engage in a corresponding hole or holes in the mandril to prevent the ring from
slipping thereon. Ou a slide carried by the bed or table of the machine I provide a
plate which is in a plane at right angles to the axis of the mandril and has a wide
slot adapted to receive the mandril this plate being in such a position that the lasso ring
when on the mandril bears against the face of the plate and is thereby kept true on
the mandril. Adapted to move to and fro near the front end of the divided mandril
is a spindle made with a coned end which can be moved down to enter the hollow
coned end of the divided mandril so as to expand the mandril and cause it to grip
the lasso ring. Fixed on the said slide on the bed of the machine there is a fixed
turning tool made with a notch in its end of a size corresponding with the two faces
and the periphery of the finished lasso ring.
The machine above in part described operates as follows-The said coned centre
is moved up or otherwise away from the mandril and the slide with the plate upon it
is moved towards the mandril so that the latter will now be in the slot of the plate.
A lasso ring in the rough is placed on the expanding mandril so as to bear against
the plate which thus brings the lasso ring true on the mandril. The said coned
centre now advances and enters the end of the expanding mandril thereby expanding
the mandril and causing it to grip tightly the inside of the lasso ring casting which
will now revolve with the mandril. The slide which carries the plate and the
turning tool is now moved back so that the notched part of the turning tool will act
upon and turn the two faces and the periphery of the lasso ring. The said slide with
the turning tool then moves in the opposite direction so that the turning tool is free
of the ring. Then the coned centre moves back away from the mandril which then
contracts and the lasso ring, turned on its two faces and periphery, falls away or is
removed froin the mandril and another placed thereon to be acted upon as above
described.

page_text: The slide which carries the vertical plate and the turning tool can either be moved
by hand or automatically by levers and cams or by other means from the main shaft
of the machine and also the coned centre which expands the mandril.
I may so arrange the said machine that in addition to turning the lasso ring on its
two faces and periphery as above described, the said machine will also turn and
finish the interior of the lasso ring. In this case the outside of the expanding
mandril is cut with teeth like a milling cutter a rounded groove being turned round
these teeth of the proper size corresponding with the interior of the finished lasso
ring. When the lasso ring in the rough is placed on the expanding mandril and the
coned centre advances and expands the mandril, as above described the teeth on the
exterior of the mandril dig into the interior of the lasso ring casting thereby gripping
the same and carrying the ring round with the mandril to be turned by the appliance
as above described. When this turning operation has been completed and the
turning tool has retired a pair of gripping jaws operated by the lever either by hand
or automatically from the driving shaft of the machine, close upon the outside of the
lasso ring and grip and hold the same stationary so that the teeth of the mandril
as it continues to revolve will mill away and turn the interior of the lasso ring
and finish the same. Whilst this turning of the interior of the lasso ring is in
progress the coned centre may if desired advance through a very short distance
so as to expand the mandril very slightly and increase the cut of the mandril
teeth on the interior of the lasso ring.
In another arrangement of my invention I proceed as follows:-
Adapted to move to and fro in a vertical line above the machine table I provide a
revolving milling tool adapted to move up and down and of the proper size and form
to mill and finish the interior of the lasso ring said milling tool having a rounded
milled shoulder upon it shaped to round off the one end of the interior of the ring.
Below the said table there is a similar milling tool adapted to revolve and move up
and down in suitable bearings and to mill the interior of the lasso ring and also made
with a milled shoulder to round off the other end of the hole of the lasso ring. On
the table there is a gripping device which may consist of two semicircular jaws
adapted to receive and hold the lasso ring between them whilst the interior is being
operated on by the milling cutters above described. Adjacent to these gripping
jaws or holders and standing up from the table there is a tubular or other vertical
guide of the proper size to hold a number of lasso rings in a pile one above the
other but so that the lasso rings can easily slide down the same. The bottom of
this tube or guide is fixed above the level of the table just far enough for one
of the lasso rings to pass out along the table underneath the tube or guide.
Adapted to move to and fro under the tube or guide there is a feed slide which
at the proper time moves forward and moves the bottom lasso ring out of the
tube or guide and along the table to the recess or jaws which then close and
hold the ring as above described whilst the milling tools advance one after the
other or together and mill the interior of the lasso ring. The milling tools then
retire and the jaws open and the finished lasso ring falls away down a shoot to
the front or other convenient part of the machine. After the feed slide has
moved a lasso ring forward to be acted upon by the milling cutters as above
described the said slide retires and the next lasso ring falls down the guide
ready to be pushed forward when the slide moves forward again. Thus the
operations of the machine are continuous and selfacting as the various parts of
the machine receive their proper motions by levers and cams or gearing or other
means from one or more shafts of the machine.
The automatic feeding mechanism above described can be similarly used with the
arrangement of my invention first above described.
Dated this 20th day of Tam1000

page_text: COMITTETE DIECIFICATION.
Improvements in Machinery for Finishing Lasso Rings and other
Metal Rings of a like kind.
I, JAMES WILLIAM BROOKS, of 6, Caldmore Road, Walsall, Staffordshire, Manu-
facturer, do hereby declare the nature of this invention and in what manner the same
is to be perforined, to be particularly described and ascertained in and by the follow-
ing statement:---
This invention consists of the herein described improvements in machinery for
turning and finishing metal lasso rings or other metal rings of a like kind. The
said lasso rings are usually turned and finished in a lathe by ordinary tools. This
method is comparatively slow and expensive. The object of this invention is to
construct a machine by which the said lasso rings can be turned outside and inside
in a much shorter space of time than heretofore and by unskilled labour.
My invention comprises means for gripping the said rings and turning the exterior
and the interior of the same and means for feeding the ring castings to the gripping
and turning appliances.
I will describe my invention by referring to the accompanying drawings on
which
Fig. 1 is a front elevation of a machine constructed according to this invention
which automatically feeds the rings to the turning and gripping tools and which grips
and turns the said rings on their exterior;
Fig. 2 shews an ordinary lasso ring of the kind which the said machine is illus-
trated as operating upon;
Fig. 3 is a plan of the said machine;
Fig. 4 is a section on line X X of Fig. 3;
Fig. 5 is an enlarged section of the guides along which the lasso rings are moved
to the gripping and turning tools;
Fig. 6 is a separate view of the turning tool;
Fig. 7 is a sectional elevation and
Fig. 8 is a front elevation on an enlarged scale of the expanding mandril which
grips and rotates the rings;.
Fig. 9 is a sectional elevation of a part of the said machine on line Y Y of
Fig. 3;
Fig. 10 is a sectional elevation of part of the automatic feeding apparatus of the
said machine;
Fig. 11 shews the feed slide separately;
Figs. 12, 13 and 14 are three cams of the said machine and
Fig. 15 is a sectional plan of the said machine on line Z Z of Fig. 1;
Fig. 16 is a front elevation of a machine constructed according to this invention
for turning and finishing the interior of the lasso rings in addition to turning the
same on their two faces and periphery ;
Fig. 17 is a plan of the machine illustrated by Fig. 16;
Fig. 18 is a sectional plan of the machine illustrated by Figs. 16 and 17;
Fig. 19 is a sectional plan of a portion of the said machine on line X X of
Fig. 16;
Fig. 20 is a sectional elevation of part of the said machine on line X X of
Fig. 17;
Fig. 20* shews one of the cams of the said machine;
Fig. 21 is a front sectional elevation of a part of the said machine on an enlarged
scale and
Fig. 22 also shews parts of the said machine in sectional elevation on the same
scale as Fig. 21;

page_text: Fig. 23 shews an alternative arrangement of tools for turning the interior of the
rings;
Fig. 24 is a side elevation of another arrangement of my invention constructed to
be worked by hand and
Fig. 25 is an end elevation of a part of the same.
The same letters of reference indicate the same or corresponding parts in all the
figures.
I will first describe the arrangement of my invention illustrated by Figs. 1 to 15
both inclusive.
In carrying out my invention I provide an expanding mandril which consists of
four jaws marked respectively a¹ a² a³ at (or there may be more or less than four
jaws) jointed by the pins as at one end to the chuck or collar A which is fixed to the
vertical spindle A¹ (or the said spindle A¹ may be horizontal or inclined) which is
adapted to revolve in the bearing 6 of the machine frame B. This spindle A¹ is
driven by the bevel wheels a a10 of which the bevel wheel a is fitted on a feather on
the spindle A so that the wheel a will turn the spindle and the latter will be free to
move up and down in the wheel a the other wheel a¹0 is fixed on the shaft a¹¹ which
by the coned pulley 12 receives rotary motion from any convenient source. The
spindle A¹ has endwise up and down movement imparted to it at the proper times as
hereinafter described by the cam c¹ (shewn separately by Fig. 12) which is mounted
on the shaft D and acts through the pusher bar c2 working in the guides be b³ of the
machine frame this pusher bar c² at the top acting against one arm of a lever
which turns about the fulcrum c² at the top of the machine frame B. The other
arm c of this lever acts upon the top of the set screw a which is screwed into the
top of the spindle A¹ so that by adjusting this set screw at the exact height of
the expanding mandril jaws a¹ a² as a which hold the ring E can be obtained. . The
lever arm c is connected to the set screw by the two side links co which at their
lower ends are connected to the collar c7 through which the set screw a passes easily
these side links c passing through lugs c on the sides of the lever ct and being
provided with spiral springs cand nuts c at the top which have the effect of
keeping the head of the set screw in contact with the under side of the lever
arm c.
The jaws aa aa constitute the divided mandril which has a small groove a
turned in it (see Figs. 7 and 8) of the proper shape than when the mandril is
expanded by the insertion of the cone ended spindle F between the ends of the jaws
as hereinafter described, the groove a will fit and grip the interior of the lasso
ring E which is to be turned. To improve the grip the groove a is roughened like
a file.
The jaws a aa³ a are made taper that is smaller at their lower ends so that
they will he brought together by the encircling rubber ring as or by a spring or the
like so as to enter the ring E and to suit rings E of various sizes. The top of the
bed or table G of the machine is horizontal or is otherwise a plane at right angles
to the axis of the mandril spindle A¹ and this table G has a plate fixed on it made in
two parts marked respectively g¹ g² shewn separately in section by Fig. 5 the top
surface of this divided plate g¹g along which the ring E slides being also a plane at
right angles to the axis of the mandril A¹. The space between the two parts g¹ g²
forms a slot to receive the mandril. When the ring E is on the divided mandril the
ring bears against the top face of the divided plate g¹ g² and is thereby kept true on
the mandril. Fixed on each of the divided plates g¹ g2 is a metal packing strip
marked g3 g³ made rather thicker than one of the ring castings so as to forin a rebated
edge to receive the ring E and on the top of these strips g3 g two other strips g¹ g5
are respectively fixed thus forming two grooves (see Figs. 4, 5, 9 and 10) along which
the rings E are moved by the feed slide as hereinafter described. The strips g³ are
rather thicker than the ring castings so as to allow the latter moving freely along the
groovės.
Adapted to move up and down near the front or bottom end of the divided mandril,
is the spindle F made coned at the top and carried by a bearing 6 of the machine
frame B up and down which the mandril F can be moved so as at the proper times

page_text: to enter between the ends of the jaws a¹ a² as a' and expand the same to grip the
ring E so that the ring will turn the mandril whilst the ring E is being operated on
by the turning tool and then when the turning is finished the spindle F descends so
as to allow the jaws a¹ a² a² at of the expanding mandril to close free of the ring as
hereinafter described. This spindle F is operated by the two armed lever of which
the arms are respectively marked f¹f the said lever turning on a fulcrum f fixed to
the machine frame the outer end of the arm being operated upon by the cam f*
(shewn separately by Fig. 13) fixed on the shaft D. The spindle F has at its lower
end an adjustable screw fo the head of which bears against the upper face of the arm f¹
and is connected by side links thereto in a similar way to that above described with
reference to the connection of the set screw a to the lever arm c¹ at the top of the
spindle A¹.
H is a slide on the table G adapted to move along the guides therein this slide H
carrying the turning tool h¹ shewn separately by Fig. 6 which has a notch 2 formed
in its front end of the shape corresponding with the cross sectional shape of the lasso
ring E or other ring E which has to be turned so that the tool will act upon
and turn the two outside faces and as its motion towards the centre of the ring is
continued will ultimately act upon and turn the periphery of the ring. This slide H
is operated by the two armed lever which at h³ turns on a fulcrum fixed to a bracket
at the underside of the table G one arm h of said lever having a set screw h³ in its
upper end adapted to act against the end of the slide rest H and the outer end of the
other arm of the said lever being acted upon by the cam h³ (shewn separately by
Fig. 14) fixed on the shaft D.
The spiral spring 8 connects the arm to the upper part of the machine
frame B and thus keeps the outer end of the lever arm ho in contact with the cam h7.
In the same way the outer end of the lever arm f2 is kept in contact with the
cam by the spiral spring f which connects the lever arın ¹ to the lower part of the
machine frame B.
Adjacent to the gripping jaws of the mandril A¹ and standing up from the table G
of the machine is a vertical guide consisting of two angle pieces I I2 of which the
plate are respectively the bases. These angle guides 11 12 are adjustable nearer
together or farther apart and are fixed at the proper distance apart to receive between
them and guide a number of the lasso ring castings in a pile (see Figs. 9 and 15) one above
the other but so that the lasso ring castings can easily slide down the same and rest
upon the divided plate g¹ g2 as above described. The bottoms g g of the guides I¹ 12
are by the packing strips 93 (which are a little thicker than one of the ring castings)
fixed above the top of the divided plate g¹ g2 just far enough for the bottom lasso ring
casting to pass out along the top of the divided plate g¹ g underneath the guides I 12.
Adapted to move to and fro along the said grooves that is between the two plates glandg
and the two plates g² and g³ there is a feed slide J which at the proper times moves
forward and pushes the bottom ring casting E of the pile along the plates g¹ g² to a
position immediately below the spindle A¹ when the latter is raised, and then when the
feed slide J retires from under the pile of ring castings to the positions shewn in
Figs. 1, 3 and 15 and the next ring casting of the pile then moves down the
guides 112 on to the top of the plates g¹ g² ready to be pushed forward by the feed
slide J. The feed slide J is operated by any convenient means (see Figs. 1,3 and 15)
as by the two armed lever ¹³ which turns about a fixed fulcrum and at one end
takes between the two studs jijs on the slide J and at the other end 3 is acted upon
by the cam fixed on the shaft D. The lever arm is kept in contact with the cam by
the spring which connects the lever arm to the machine frame.
The cam shaft D which revolves in bearings 65 be of the machine frame receives
rotary motion from any convenient source as by the spur wheels d¹ d² from the first
motion shaft d³ which revolves in the bearings 676s of the machine frame and
which is driven by a band on the pulley d.
The machine above in part described operates as follows:-Whilst the cam shaft D
is in such position that the push bar c² levers f2 and 2 rest against the low parts
of their respective cams the spindle F is then in its lowest position away from the

page_text: divided mandril A¹ and the latter is raised to its highest position and the turning
tool is in its farthest position away from the mandril spindle A¹. The feed slide J
then moves forward and pushes the bottom lasso ring casting from the pile in the
guides II² along the top of the divided plate g¹ g² to a position iminediately under-
neath the centre of the spindle A¹. The spindle A¹ now descends so that the
jaws a¹ a² as a enter the lasso ring E and the groove a7 of the jaws will correspond
with the lasso ring. This is obtained by adjusting the set screw a. The top of the
divided plate g¹g insures the ring E being true on the divided mandril. The coned
spindle is now advanced by its lever f¹ f and cam f so that the top coned part
enters between the jaws a¹ a² a³ at of the expanding mandril thereby expanding the
mandril and causing the said jaws to grip tightly the inside of the lasso ring casting
which will now revolve with the mandril. The slide H which carries the turning
tool h¹ is by the lever hand cam now moved towards the mandril spindle A¹ so
that the notched part h² of the turning tool will act upon and turn the two faces and
the periphery of the lasso ring E the shape of the cam h7 being such as to give the
proper gradual advancing motion to the slide H and turning tool h¹. When the slide H
has moved up as far as the stop h³ will allow the slide H with the turning tool are
then by the cam 7 moved in the opposite direction so that the turning tool h¹ is free
of the lasso ring E. The coned spindle F now moves down away from the mandril
jaws a¹ a² a³ a¹ of the divided mandril which by the encircling indiarubber ring as
then contract so that the jaws a¹ a² a³ at are free of the lasso ring and then the
spindle A¹ and jaws rise far enough for the jaws a¹ a² a³ at to be clear of the ring E
which is then pushed out at the end of the plate g¹ g² by the next lasso ring casting
being pushed into position by the feed slide J and falls away down the incline 6º.
Thus the operation of the feeding of the lasso ring castings to the gripping and
turning tool appliances and the turning of the rings on their two faces and periphery
are continuous and self-acting.
I may so arrange the said machine that in addition to turning the lasso ring on its
two faces and periphery as above described the said machine will also turn and finish
the interior of the lasso ring. This is accomplished as I will now describe by refer-
ring to Figs. 16 to 22. By the side of the said expanding mandril formed by the
jaws a u² a3 a4 and at a short distance therefrom and in the line of motion of the
feed slide J I provide another similar expanding mandril K¹ formed of the four
jaws (or there may be more or less than four jaws) similar to the
jaws a¹ a² a³ at and jointed by pins 5 at one end to the chuck or collar K which is
similar to the chuck or collar A and which is fixed in a similar way to the vertical
spindle K¹ which is adapted to revolve in the bearing 61 of the machine frame parallel
with the vertical spindle A¹. This spindle K¹ is driven by the bevel wheels a a¹º.
The bevel wheel a is fitted on a feather on the spindle K so that the wheel a⁹ will
turn the spindle and the latter will be free to move up and down in the wheel a³.
The other wheel 10 is fixed on the shaft all above described. Rotary motion is im-
parted from the spindle K¹ to the spindle A¹ by the two spur pinions a¹³ working
respectively on feathers on the vertical spindles K'A' so as to turn the same and
allow of the spindles K¹ A¹ moving up and down. The vertical spindle K¹ has end-
wise up and down movement imparted to it at the proper times by the same kind of
mechanism as that herein before described for operating the spindle A¹ and shewn by
Fig. 4, that is to say, there is fixed on the cam shaft D a cam of a similar shape to
the cam c¹ Fig. 12 which cam acts through the vertical pusher bar 12 Fig. 17 which
is similar to the pusher bar c² Fig. 4, and similarly mounted to work up and down in
bearings in the machine frame. The top of this pusher bar 12 acts against the under-
side of the arm 13 of the two armed lever L. which is mounted on a fulcrum pin c³
the other arm 4 of which acts upon the top of the set screw 7 which is screwed into
the top of the spindle K¹ so that by adjusting this set screw the exact height
of the expanding mandril jaws kk 3k which hold the ring E can be obtained.
The lever arm is connected to the set screw 7 by similar means to those above
described with reference to the connection of the lever arin c to the set screw aº of
the vertical spindle A¹. The jaws k¹ kº 13 k of the expanding mandril have a rounded

page_text: groove turned in their outside (see Fig. 22) and this groove is cut with teeth like
a milling cutter and is made of the proper size and shape to correspond with the
interior of the finished lasso ring E. After the lasso ring E has been gripped by the
expanding mandril jaws a¹ a² a³ at and turned on the exterior by the tool h² as above
described, and the mandril has raised so that the ring E is free, the act of the feed
slide J moving another ring casting E to be turned pushes the turned ring along
until it arrives under the other mandril spindle K' which descends and enters the
ring E until the groove is on the same level as the ring and then the coned
centre F2 which is similar to the coned centre F above described and operated by
similar means that is by the two armed lever f¹ and cam f on the cam shaft D rises
and entering between the mandril jaws 1 2 3 4 expands them so that the teeth on
the exterior of the mandril at s dig into and turn and finish the interior of the lasso
ring which meanwhile is held stationary by the pair of gripping jaws M¹ M² (see
Figs. 18 and 20) which are shaped so as to grip the lasso ring H, one of the jaws M²
being fixed stationary on the table H and adjusted by the set screw m¹ whilst the
other jaw M is fixed on a slide m² which is operated by a cam m³ (shewn separately
by Fig. 20*) fixed on the shaft D this cam being so shaped as to move the slide m²
and jaw M against the ring E as the teeth in the groove of the mandril jaws
commence to operate upon it. Whilst the turning of the interior of the lasso
ring E is in progress the coned centre F2 is by the shape of its operating cam fo
made to advance through a very short distance so as to expand the mandril very
slightly and increase the cut of the teeth on the interior of the lasso ring. When
the coned centres F F2 move down and the mandril spindles A¹ K¹ rise so that the
two rings which have been operated upon are free, the ring E which has been turned
on the inside is pushed away by the next ring being placed in position by the feed
slide K so that the finishing ring falls down the incline and the operations above
described are repeated so that the rings are by the machine automatically fed to the
gripping and turning tools and leave the machine turned outside and inside.
Instead of employing the mandril jaws ¹³k made with the toothed groove 1.8
to turn the interior of the rings E as above described, I may as shewn in Fig. 23
provide on the spindle K¹ the revolving milling tool N¹ made with milling teeth n¹
of the proper size and shape to mill and finish the interior of the lasso ring E the
said milling tool having a rounded milled shoulder n¹ upon it shaped to round off the
end of the interior of the ring. Below the table G of the machine there is a similar
milling tool N2 carried by a spindle K2 which is made to revolve and move up and
down vertically by similar means to those above described for revolving and moving
the spindle K. This milling tool N2 is also made with a milled shoulder n2 upon it
to mill the interior of the lasso ring and to round off the other end. Whilst the
ring E is being held by the jaws M1 M² as above described the milling tools N¹ N2
advance one after the other or both together and their teeth n¹ n² mill the interior
of the ring E. The spindles K1 K2 with the milling tools N1 N2 then retire and the
jaw M¹ moves back so that the finished lasso ring E falls away down the incline 610
at one side of the machine.
Fig. 24 shews another arrangement of my invention constructed for the turning
tool and the gripping parts to be operated by hand instead of being operated
automatically as above described; Fig. 25 shews the slide rest and turning tool of
this machine separately. In this arrangement of my invention the spindle A¹ is
merely arranged like the spindle of a lathe so as to revolve but not move endwise
and the coned centre spindle F is arranged to be moved to and fro in the poppet O
by means of an ordinary hand lever connected thereto in the ordinary way but not
shewn on my drawings. The slide rest H which may be operated by a screw in the
usual way and which carries the turning tool h¹ made with a notch h2 on its front end
to turn the lasso ring E, also carries the plate g¹ g² the surface of which is a plane at
right angles to the axis of the spindle A¹. The plate g¹g is fixed at some little
distance in front of the turning tool h² and is slotted out on the side nearest to the
turning tool h¹ so that the parts g₁ g² of the said plate form a stop to prevent the
ring E being pushed on the mandril too far and to keep the ring E in position at

page_text: right angles to the axis of the spindle A¹ before the coned centre F is moved up to
expand the jaws a¹ a² a³ at to grip the interior of the ring. Then as the slide H
which carries the turning tool is moved up towards the ring E the plate gl g² moves
away leaving the ring E free to revolve with the mandril jaws while the turning
tool operates upon it. In this arrangement shewn by Figs. 24 and 25 the ring E
is placed in position on the divided mandril jaws a¹ a² a³ a¹ by hand whilst the
coned centre F is moved back.
It will be evident that if desired the guides I¹ I and the feed slide J and the
means for operating the same may be dispensed with and the rings be placed in
position in the machine one at a time by hand.
The accompanying drawings illustrate what I consider to be the best ways of
carrying my said invention into practice but it will be understood that my invention is
not limited to the precise details described and shewn as these may be modified
without departing from the nature of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
1. In a machine for turning lasso rings and other metal rings of a like kind, the
combination of vertical guides arranged to contain a pile of ring castings, a feed
slide and means for moving the same under the pile to push the bottom ring forward
and to return, means for guiding said ring, a divided mandril adapted to enter the
said ring and to expand and grip the same internally, means for imparting to and
fro endwise movement to said mandril and for revolving it, a coned centre arranged in
line with said mandril and adapted to move towards and expand the same so as to
grip the ring and cause the ring to revolve, a turning tool and means for guiding
and moving the same to and from said ring, said turning tool being shaped so as to
turn the exterior of the ring, said parts being arranged for joint operation substantially
as set forth.
2. In a machine for turning lasso rings and other metal rings of a like kind, the
combination of a divided mandril adapted to enter one of the said rings and to
expand and grip the same internally, means for imparting a to and fro endwise
motion to said mandril and for revolving it, a coned centre arranged in a line with
said mandril and adapted to move towards and expand the same so as to grip the
ring and cause the ring to revolve, a turning tool and means for guiding and moving
the same to and from said ring, said turning tool being shaped so as to turn the
exterior of the ring, said parts being arranged for joint operation substantially as set
forth.
3. In a machine for turning and finishing lasso rings and other metal rings of a like
kind, the combination of vertical guides arranged to contain a pile of ring castings,
a feed slide and means for moving the same under the pile to push the bottom ring
forward and to return, means for guiding said ring, a divided mandril adapted to
enter the said ring and to expand and grip the same internally, means for impart-
ing to and fro endwise movement to said mandril and for revolving it, a coned
centre arranged in line with said mandril and adapted to move towards and expand
the same so as to grip the ring and cause the ring to revolve, a turning tool and
means for guiding and moving the same to and from said ring, said turning tool
being shaped so as to turn the exterior of the ring, a divided mandril or milling tool
adapted to enter said ring when pushed forward from the turning tool, means for
imparting a to and fro endwise motion to said divided mandril or milling tool and
for revolving it, a coned centre arranged in line with said divided mandril or milling
tool and adapted to move towards and expand the same so as to turn the interior of
the ring and gripping jaws for gripping and holding said ring stationary whilst the
interior is being thus turned, said parts being arranged for joint operation
substantially as set forth.
4. In a machine for turning the interior of lasso rings and other metal rings of a
ike kind, the combination of a divided mandril adapted to enter said ring and made

page_text: with a groove such as like a milling cutter, a coned centre arranged in line with
said divided mandril and adapted to move towards and expand the same so that the
milling cutter part will turn the interior of the said ring, and gripping jaws for
gripping and holding the said ring stationary whilst being thus turned in the
interior, substantially as set forth.
5. In a machine for turning Jasso rings and other metal rings of a like kind, the
combination of a divided mandril adapted to enter and grip said ring, means for
revolving said mandril, a coned centre arranged in a line with said mandril and
means for moving the said centre so as to expand the divided mandril to grip the
ring and cause the ring to revolve, a turning tool carried on a slide and adapted to
move to and from said ring said slide having a plate such as g5 96 at right angles to
the axis of the mandril and arranged so as to form a stop against which the ring can
be placed in position on the mandril so as to bring the ring true thereon said parts being
arranged for joint operation substantially as hereinbefore described and illustrated
by Figs. 24 and 25 of the accompanying drawings.
6. In a machine for turning the interior of lasso rings and other metal rings of a like
kind, the combination of the gripping jaws adapted to grip and hold the ring
stationary, and two revolving milling tools arranged on a common centre line and
concentric with the ring when held by the jaws, one of the milling tools being on one
side of the ring and the other milling tool being on the other side of the same, means
for revolving the milling tools and for moving them to and fro each milling tool
being made with a toothed shoulder such as n² said milling tools being arranged to
act together so as to turn and finish the interior of the ring, substantially as herein-
before described with reference to Fig. 23 of the accompanying drawings.
Dated this 28th day of November 1898.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.