Year: 1887

page_text: Date of Application, 18th Oct., 1887
Complete Specification Left, 18th July, 1888
Complete Specification Accepted, 24th Aug., 1888
We, FRANCIS MURR KETTON and CHARLES WILLIAM HOLLIS, of Meadow Works,
Nottingham, in the county of Nottingham Engineers and Tool Makers do hereby
declare the nature of this invention to be as follows:-
Firstly In so arranging the tool-holder or upper part of slide rest, as to hold
round, vee, or any other section of steel, in a vertical, horizontal, or oblique position,
at any angle. Also in conjunction with above, by an arrangement of loose ring under
the tool holder, sliding upon plain, toothed, or serrated inclined projections upon the
underside of tool-holder, a raising and lowering motion is obtained, thereby disposing
of all loose packing hitherto necessary in adjusting cutting tools.
Upon swivel slide is a moveable slide worked endways by screw and nut, this slide
being slot-drilled to receive the head of a vertical pin, the slot allowing pin to move
the full length of slide. This pin carries upon the upper surface of slide a circular
disc having inclined projections which may be toothed, serrated, or plain on its upper
surface, and arranged to move freely round vertical pin. Upon disc is carried the
lower tool-holder with corresponding toothed, serrated, or plain inclined projections
upon the underside, fitting those described upon the upper surface of disc, in such
manner that by turning one round, the other remaining stationary, the lower tool-
holder is raised or lowered, by the inclined projections.
The upper side of lower tool-holder has an oblique surface fitting the under side of
an upper tool-holder, the top side of which is horizontal. The upper and lower tool
holders and disc are secured to moveable slide, in any position, by nut and washer
upon upper end of vertical pin; the pin passing through centre of same. Two opposite
sides of upper and lower tool-bolder are parallel with each other, upon each of these
sides, and parallel with oblique joint of upper and lower tool-holder, a recess is formed,
to receive a vee section tool; when tool is in position the oblique surfaces are a little
apart allowing nut upon vertical pin to hold tool securely by pressing upper and
lower tool-holder together. The lower edge of vee section tools are bevelled and a
corresponding bevel made in the recess on each side of lower tool-holder to receive
D...

page_text: them, ensuring an upright position of tools, and preventing them slipping.
The upper
face of vee section tools are a little broader than the depth of recess in tool-holder,
allowing tool to project on the outer side for clearance when surfacing, one side being
for right and the other for left hand sliding and surfacing. The tools may be of an
indefinite length, and pushed along oblique recess to suit nature of work operated
upon. The lower disc being revolved to raise or lower the point of tool, the lower
tool-holder supporting tool close to cut, and the nut securing the whole in any position
round vertical pin for sliding or surfacing.
On the third side of upper tool-holder at right angles to the aforesaid parallel sides,
a hole is drilled, to receive a round roughing tool, held in an inclined position, at a
suitable cutting angle. On inner side of hole, a vertical recess is made, running into
inclined hole, to receive a plug operated upon by a right and left hand screw, one end
of which is screwed into plug, out of centre, to prevent plug from turning round, and
the other end screwed into solid part of tool-holder below plug. The round roughing
tool is held in upper tool holder in an inclined position, and the plug in a vertical
position, the plug thus forming a wedge which securely holds or releases tool by
means of right and left hand screw.
Instead of a right and left hand screw to operate plug, a screw may be made with
fast or loose collars, the lower part of recess tapped to receive it, and the plug held
between collars on screw, the plug being raised or lowered by turning screw.
In place of either of the beforementioned methods of making screw and operating
plug, the plug may be tapped eccentric to its axis, screw working into same and held
below recess by fast or loose collars, or by reducing screw and making a corresponding
recess to receive it in tool holder below plug. The plug forming a wedge is raised or
lowered by turning screw, thereby securing tool in position or liberating it as
required.
By removing upper tool holder and replacing it by another piece with a corre-
sponding oblique undersurface to fit lower tool holder, the said piece having two flat
top surfaces, one higher than the other, is suitable for using ordinary tools or
flat drills, the nut and washer on vertical pin securely holding same in any
position.
Secondly An improved combined arrangement of slide, surface, and screw cutting
motions.
The driving shaft for slide and surface feed is carried in front and at lower edge of
Bed, and has a key-groove running its full length, upon this shaft is a right and left
hand worm with sliding key. Above the centre of worm and on worn bracket, a boss
is formed to support rack pinion shaft, the boss is turned, and forms bearing for a
rocking lover, which carries upon studs at its extremities two pinions gearing with a
spur wheel carried upon rack pinion shaft; upon opposite ends of pinion studs, and
immediately above worm, are two worm wheels. At one end of rocking lever is a
handle placed in a convenient position for operator, with a spring to hold same in
position when either worm is in gear, or when both worm wheels are out of gear with
worms. The aforesaid spur wheel has a taper recess fitting a plate with correspond-
ing taper edges, which is keyed upon rack pinion shaft; the plate and spur wheel are
drawn together by means of hand wheel forming nut upon the rack pinion shaft,
passing through apron and worked from the front of saddle; thus, the sliding motion
is obtained through worm and wheel, to pinion keyed upon same stud as worm
wheel, the pinion, gearing into spur wheel driving by friction the shaft upon which
is keyed the rack pinion. The starting, reversing and stopping motions are made by
working rocking lever up or down.
For the surface motion a pinion is geared with the aforesaid spur wheel which also
gears into another wheel which drives a pinion forming a revolving nut upon saddle
screw. By means of rocking lever worked as before mentioned, a starting, reversing,
and stopping motion is given to surface feed.
An independent disengaging motion is given to surface feed by the pinion gearing
into spur wheel upon rack pinion shaft being thrown out of gear. This pinion runs
upon a stud secured to one end of a lever, the other end of lever slotted with an

page_text: eccentric stud working into same, and the wheel which is driven by pinion running
upon same pin, forming fulcrum pin of lever; by this means the two pinions and wheel
are always in gear with each other, the pinion working into spur wheel upon rack
pinion shaft being disengaged.
A slot is cut across wheel gearing with saddle screw pinion, to admit of a bar which
is moveable endways by handle, and retains its position by spring. Round the
periphery of wheel is a projection upon apron which has two recesses formed to receive
bar by this means an ordinary or screw-cutting tool may be quickly withdrawn
and returned to the same position by the bar being allowed to fall into the recesses
alternately.
Thirdly An anti-frictional arrangement of hardened steel balls running between
hardened surfaces for resisting thrust in the bearings of Fast head spindles of Lathes,
and which is applied in the following manner :-
A spindle with front and back bearings parallel, the end adjustment and thrust been
received in back bearing. The back bearing is fixed, the front and back faces of same
hardened, and each recessed to receive a row of hardened steel balls, a hardened collar
is placed outside each row of balls and keyed to spindle, thus the balls run between
the two collars keyed upon spindle and the fixed bush forming back bearing of spindle.
The adjustment for wear is made by lock nuts on end of spindle, at the back of collar,
outside back bearing.
For a spindle with a taper front bearing and a parallel back bearing, the thrust
being taken and spindle supported in the back bearing by hardened steel balls. The
spindle in back neck is reduced, forming a working surface for a row of balls, the balls
working against a corresponding recess in back bush; a recess is made at the other
end of bush for a second row of balls working against collar and adjusted by lock
nuts.
For a spindle working in taper front and parallel back bearings, the back bearing
has an adjustment in direction of spindle, by a lock nut on either side, both faces of
back bearing hardened and balls working between it and two collars keyed upon either
side of same on spindle, the adjustment and wear of balls taken up by two lock nuts
on spindle end against collar; and the adjustment and wear of front bearing by lock
nuts and bush forming back bearing.
When a spindle has both front and back bearings taper, the front bearing rigid and
the adjustment and wear arranged in back bearing.
bush bored to suit back taper
bearing of spindle is adjusted endways by a lock nut on either side of casting
supporting said bush, these lock nuts have hardened faces and recessed to receive a row
of balls which work against collars keyed upon spindle; outside each of these collars
are two lock nuts on spindle for adjustment of front taper neck of spindle and wear of
balls by end thrust, the lock nuts upon back bush adjusting it to back taper neck of
spindle.
Spindles with rigid front necks and rigid parallel or moveable taper back necks have
a row of balls working upon the outer faces of back and front spindle bearings which
are adjusted by lock nuts.
Fourthly: An improved method of instantaneonsly fastening loose head to Bed by
oscillating tumbler, combined with a right and left hand screw.
The body of head is cast hollow to receive a tumbler oscillating upon a fulcrum pin
at right angles to Bed, and as near underside of head as possible. A holding down
plate, fitting underside of Bed shears, is connected to tumbler at the front end of head
by a bolt screwed into tumbler, upon the other end of this bolt is a spring pressing
tumbler and holding down plate off face of Bed shears; at back end of tuinbier and
at the otherside of fulcrum pin is a right and left hand screw, one end tapped into
tumbler and one end into holding down plate. This screw is operated by hand lever
keyed upon end of screw, above tumbler at the back of head, when turned in one
direction pressing the tumbler and holding down plate together, thereby securely holding
head; and releasing head when turned in opposite direction.
Fifthly: An improved chuck or gripping device for securely holding bars in hollow
spindle or other Lathes,

page_text: Spindle end is bored taper to admit split taper bushes of various internal diameters
to suit sizes of bars to be gripped. Upon outer end of bush a groove is formed for
the purpose of withdrawal. A front plate is undercut to fit lip formed by grooving
bushes, part of lip on bush ends being removed in such a manner that when bush is
placed in recess of front plate and turned partly round, it is secure for withdrawal.
The front plate is secured on either side of bush by a swivel bolt and nut which are
held in an oscillating ring, oscillating upon two pins at right angles to the aforesaid
swivel bolts. The oscillating or fulcrum pins being screwed into bush secured to
spindle nose.
In place of split bushes three dies may be used tapered externally to fit spindle,
each having a foot turned outwardly at right angles to spindle and sliding in grooves
or vees upon inner side of front plate, the front plate secured and operated as before
mentioned.
By this oscillating arrangement an equal pressure or grip applied to bushes
or dies when either nut is turned inwards and releasing same when turned
outwards.
We have now particularly described the nature of our said invention and the
manner in which the same is to be carried into effect and claim as our invention.
Firstly. In so arranging the tool-holder or upper part of slide rest, as to hold round,
vee, or any other section of steel in a vertical, horizontal, or oblique position, at any
angle. Also in conjunction with above, by an arrangement of loose ring under the
tool-holder, sliding upon plain, toothed, or serrated inclined projections upon the under-
side of tool holder, a raising and lowering motion is obtained, thereby disposing of all
loose packing hitherto necessary in adjusting cutting tools, substantially as hereinbefore
described.
Secondly. An improved combined arrangement of slide, surface, and screw cutting
motions, substantially as hereinbefore described.
Thirdly. An anti-frictional arrangement of hardened steel balls running between
hardened surfaces, for resisting thrust in the bearings of fast head spindles of
Lathes by a combination of any of the methods, substantially as hereinbefore
described.
Fourthly. An Improved method of instantaneously fastening loose head to Bed by
an oscillating tumbler, combined with a right and left hand screw, substantially as
hereinbefore described.
Fifthly. An Improved chuck or gripping device for securely holding bars in hollow
spindle or other Lathes, substantially as hereinbefore described.
Dated this Sawantanuth d of Otahan 1007

page_text: FRANCIS MURR KETTON and CHARLES WILLIAM HOLLIS, Meadow Works,
Nottingham, in the County of Nottingham Engineers and Tool Makers 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:-
Firstly In so arranging the tool holder or upper part of slide rest of Lathes as
to hold round, vee, or any other section of steel, in a vertical, horizontal or oblique
position, at any angle-also in conjunction with above by an arrangement of loose ring
under the tool holder sliding upon plain, toothed, or serrated inclined projections upon
the underside of tool holder, a raising and lowering motion is obtained thereby
disposing of all loose packing hitherto necessary in adjusting cutting tools.
Fig. 1 and 2 sheet 1 is an elevation and plan, Fig. 3 sheet 2 a longitudinal section
through line M N and Fig. 4 sheet 2 a Transverse section through line OP of Tool
holder or upper part of slide rest.
Upon swivel slide A is a moveable slide B worked endways by screw and nut, this
slide been slot drilled to receive head of vertical pin C, the slot allowing pin to move
length of slide. This pin carries upon the upper surface of slide B a circular disc D
having inclined projections which may be toothed serrated or made plain on its upper
surface and arranged to move freely round vertical pin C.
Upon disc D is carried the lower toolholder E with corresponding toothed,
serrated or plain inclined projections on the underside, fitting those described on upper
surface of disc D in such manner that by turning one round, the other remaining
stationary, the lower toolholder is raised or lowered by the inclined projections.
The upper side of lower tool holder E has an oblique surface fitting the underside of
an upper tool holder F, the top side of which is horizontal. The upper and lower
tool holder and disc are secured to moveable slide in any position by nut G upon upper
end of vertical pin C passing through the centre of same.
Two opposite sides of upper and lower toolholder are parallel with each other, upon
each of these sides and parallel with oblique joint of upper and lower tool holder a
recess is formed to receive a vee section tool H ; when tool is in position the oblique
surfaces are a little apart allowing nut upon vertical pin to hold tool securely by
pressing upper and lower tool holder together. The lower edge of vee section tools
are bevilled and a corresponding bevil made in the recess on each side of lower
toolholder to receive them ensuring an upper position of tools and preventing them
slipping. The upper face of vee section tools are a little broarder than the depth of
recess in tool holder, allowing tool to project on outer side for clearance when
surfacing, one side been for right and the other for left hand sliding and surfacing,
the tools may be of an indefinite length and pushed along oblique recess to suit nature
of work operated upon, the lower disc been revolved to raise or lower point of tool,
the lower tool holder supporting tool close to cut and the nut securing the whole in
any position round vertical pin for sliding or surfacing.
On the third side of upper tool holder at right angles to the aforesaid parallel sides
a hole is drilled to receive a round roughing tool J, held in an inclined position at a
suitable cutting angle, on the inner side of hole a large vertical recess running into
inclined hole receives a plug K operated upon by a right and left hand screw L, one

page_text: end of which is screwed in plug K eccentric to centre of same to prevent plug
turning round, and other end screwed in solid part of upper tool holder F below plug.
The round roughing tool is held in upper tool holder in an inclined position and
the plug in a vertical position, the plug thus forming a wedge which securely holds or
releases tool by means of right and left hand screw.
Instead of a right and left hand screw to operate plug a screw L Fig. 5 sheet 2
may be made with fast and loose collars, the lower part of recess tapped to receive it
and the plug K held between collars on screw L, the plug been raised or lowered by
turning screw.
In place of either of the before mentioned methods of making screw and operating
plug. The plug K Fig. 6 sheet 2 may be tapped eccentric to its axis, the screw
working into same and held below the recess by fast and loose collars, or by reducing
screw and making a corresponding recess to receive it in tool holder F below plug,
the plug forming a wedge is raised or lowered by turning screw thereby securing tool
in position or liberating it as required.
By removing upper tool holder F and replacing it by another piece M Fig. 7 and 8
sheet 2 with a corresponding oblique under surface to fit lower tool holder E the said
piece M having two flat top surfaces one higher than the other is suitable for using
ordinary tools or flat drills, the nut G and washer N on vertical pin C securely holding
same in position.
Secondly-An anti-frictional arrangement of hardened steel balls running between
hardened surfaces for resisting thrust in the bearing of fast head spindles of Lathes
and which is applied in the following manner :-
A spindle with a taper front bearing and a parallel back bearing the thrust been
taken and spindle supported in the back bearing by hardened steel balls.
The spindle A Fig 9 sheet 3 in back neck B is reduced forming a working surface
for a row of balls C, the balls working against a corresponding recess in back hush B ;
a recess is made at the end of bush for a second row of balls D working against
collar E and adjusted by lock nuts F and F¹.
A spindle G Fig. 10 sheet 3 with front and back bearings parallel, the end
adjustment and thrust been received in back bearing H, which is a fixture, the front
and back faces hardened and each recessed to receive a row of hardened steel balls I
and J. A hardened collar K and L is placed outside each row of balls and keyed to
spindle, the balls running between the two collars keyed upon spindle, the fixed bush
forming back bearing of spindle; the adjustment for wear is made by lock nuts M
and M¹ on end of spindle at back of collar L outside back bearing.
In a spindle working in taper front and parallel back bearings; the back bearing
has an adjustment in direction of spindle by lock nuts N and N Fig. 10 sheet 3 with
faces of back bearing hardened and balls working between it and the collars keyed
upon either side of same on spindle; the adjustment and wear of balls taken up by
two lock nuts on spindle end against collars and the adjustment and wear of front
bearing by lock nuts and bush forming back bearing.
When a spindle has both front and back bearings taper, the front bearing rigid
and the adjustment and wear arranged in back bearing. A bush bored to suit
back taper bearing of spindle is adjusted endways by lock nuts QQ¹ one on either
side of casting supporting said bush, these lock nuts have hardened faces and each
recessed to receive a row of balls R and S which work against collars T and U
keyed upon spindle; outside each of these collars are lock nuts V and W on spindle
for adjustment of front taper necks of spindle and the wear of balls by end thrust,
the lock nuts Q and Q¹ on back bush O adjusting it to back taper neck of spindle P.
Spindle with rigid front necks and rigid parallel or moveable taper back necks,
have a row of balls working upon the outer faces of back and front spindle bearings
which are adjustable by lock nuts.
Thirdly. An improved method of Instantaneously fastening Loose head to Bed
by an oscillating tumbler combined with a right and left hand screw-Fig. 12
sheet 4 is a part section of head on line QR: Fig. 13 a transverse section through
fulcrum pin on line S T, and Fig. 14 a sectional plan on line U V.

page_text: The body of head A is cast hollow to receive a tumbler B oscillating upon a
fulcrum pin C at right angles to bed and near underside of head as possible a holding
down plate D fitting underside of bed shears is connected to tumbler at the front end
of head by a bolt E screwed into tumbler, upon the other end of this bolt is a spring
pressing tumbler B and holding down plate E off face of bed shears; at back end of
Tumbler and at the otherside of Fulcrum pin C is a right and left hand screw F one
end tapped into tumbler and one end into holding down plate this screw is operated by
hand lever G keyed upon end of screw above tumbler at back of head, when turned
in one direction pressing the tumbler B and holding down plate E together thereby
securely holding head and releasing head when turned in opposite direction.
Fourthly. An improved chuck or gripping devise for securely holding bars in
hollow spindle or other lathes.
Fig. 15 sheet 5 is a section on line W X.
Fig. 16 is a part elevation and
Fig. 17 is a longitudinal section on line Y Z.
Spindle end A is bored taper to admit split taper bushes B of various internal
diameters to suit size of bars to be gripped, upon out end of bush B a groove is
formed for the purpose of withdrawal, a front plate C is undercut to fit lip
formed by grooving bushes, part of lip on bush ends been removed in such a
manner that when bush is placed in recess of front plate C and turned partly
round it is secure for withdrawal. The front plate C is secured on either side of
bush B by swivel bolts and nuts D and D¹ which are held in an oscillating ring E,
oscillating upon two pins F and F at right angles to aforesaid swivel bolts D
and D, the oscillating or fulcrum pins being secured into a bush G secured to
spindle nose.
In place of split bushes, three dies may be used tapered externally to fit spindle
each having a foot turned outwardly at right angles to spindle and sliding in
grooves or vees upon inner side of front plate, the front plate secured and operated
as before mentioned.
By this oscillating arrangement an equal pressure or grip is applied to bushes
or dies when either nut is turned inwards, and releasing same when turned
outwards.
Having now particularly described and ascertained the nature of our said Inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
Firstly In so arranging the tool holder or upper part of slide rest of Lathes as
to hold round vee or any other section of steel in a vertical, horizontal, or oblique
position at any angle, also in conjunction with above by an arrangement of loose
ring under the tool holder, sliding upon plain toothed or serrated inclined projec-
tions upon the underside of tool holder a raising and lowering motion is obtained
thereby disposing of all loose packing hitherto necessary in adjusting cutting tools.
Secondly-An anti-frictional arrangement of hardened steel balls running between
hardened surfaces for resisting thrust in the bearings of Fast head spindles of
Lathes.
Thirdly An Improved method of Instantaneously fastening Loose head of Lathes
to Bed by an oscillating tumbler combined with a right and left hand screw.
Fourthly An Improved chuck or gripping device for securely holding bars in
hollow spindle or other Lathes.