Improvements in Lathes, and in Attachments to be Used therewith.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Lathes, and in Attachments to be Used therewith.
I ERNST LOUIS STRIEGLER of No. 5 Madeley Road Ealing in the County of
Middlesex Gentleman do hereby declare the nature of this invention to be as
follows:
My invention refers to lathes which I so construct as to make the tool holder or
work on the saddle capable of motion automatically in longitudinal angular and
transverse directions.
The bed of the lathe is of usual construction and has mounted thereon a saddle
capable of longitudinal motion. On this saddle are the usual ✓ shaped grooves or
the like in which the lower part of the saddle slide works. The saddle slide is
provided with a recessed part into which fits the lug of the slide rest and a set
screw or other convenient means of fixing is utilized for attaching the slide rest
thereto. In order to permit of using the slide rest for attaching thereto the work
if the lathe be used for milling or otherwise, there is a separate lug made T shaped
or otherwise fashioned which fits into the recessed part on the saddle slide and the
other end is made so as to receive the lug of the slide rest. Or there may be a
separate vertical frame at the back of the lathe having longitudinal and vertical
slides on which the work to be operated on would be bolted. The milling tool is
mounted on the slide rest and receives motion from any convenient source of
If the attachment be used as a plaining machine the tool is preferably held stationary
while the work moves.
power.
The bed has mounted inside thereof a feed shaft provided with a feather way and
this shaft receives motion from a countershaft situated by preference at the back
of the frame or bed. This countershaft is driven direct from any convenient source
of power or it may be driven indirectly from the mandrel. A convenient way of
carrying out this part of the invention is to mount on this countershaft a bevel
wheel which has gearing therewith another bevel wheel. This latter is keyed to a
shaft having at its other end a worm which gears with and communicates motion
to a worm wheel on the mandrel. The shaft in question is mounted in such manner
as to be capable of adjustment in order to allow of different sized worms and worm
wheels being used.
In order to communicate motion to the feed shaft a similar arrangement is used
consisting of a bevel wheel gearing with the bevel wheel on the countershaft, a shaft
mounted in an adjustable bracket having at its other end a worm gearing with a worm
wheel on the feed shaft.
The direction of motion of the feed shaft may be altered at will or altogether
stopped by any convenient reversing and stopping mechanism.
The longitudinal self acting motion of the saddle is effected by a worm having a
feather which takes into the feather way in the shaft and this worm is held in
a bracket projecting down from the saddle in such manner that as the feed shaft
revolves and with it the worm, motion is transmitted from the worm to a worm
wheel mounted on a shaft also mounted in the saddle and preferably below the bed
on each side thereof. This shaft has also mounted thereon a pinion and as this
pinion revolves it gears with a rack fixed to the bed and causes the saddle to move.
In order to permit of a quick return of the saddle by. hand or in order to stop the

page_text: longitudinal feed the feed shaft is either disconnected by the stopping or reversing
gear, or the worm wheel on the pinion shaft is disconnected by any convenient clutch
mechanism.
In order to permit of a slow longitudinal hand feed there is also a bevel wheel
with a feather mounted on the feed shaft and motion is communicated thereto by
a handle and two other bevel wheels mounted on the saddle. The handle shaft is
mounted in both sides of the saddle below the bed. The back end of the shaft
extends outside of the saddle and has mounted thereon a spur change wheel or the
like which communicates motion either directly or indirectly to the traverse feed
screw of the saddle slide. Means are employed for throwing out of gear or reversing
the spur wheel on the traverse feed screw or the intermediate wheel if there be one.
If desired the traverse and longitudinal feeds may take place simultaneously thereby
giving an angular motion to the tool or the like.
If traversing motion only is required the worm wheel on the pinion shaft before
referred to is disconnected by its clutch, and motion is obtained from the back end of
the slow feed handle shaft.
Instead of, so to speak, obtaining the traversing motion directly from the slow feed
handle shaft, it may be obtained from separate feed shaft with feather way mounted
preferably at the back of the frame motion being supplied thereto by means of
I change wheels from the feed shaft before referred to. The feed shaft for the
traversing motion has a bevel wheel with a feather thereon revolving in a bracket
on the saddle and motion is conveyed from this bevel wheel to the feed screw of the
saddle slide. It is evident that reversing and stopping gear is equally applicable in
this case.
Or instead of obtaining traversing motion for the separate feed shaft at the back
from the feed shaft it may be obtained equally well from the countershaft or from the
mandrel.
'
Improvements in Lathes, and in Attachments to be Used therewith.
I, ERNST LOUIS STRIEGLER, of No. 5 Madeley Road, Ealing, in the County of
Middlesex, Gentleman do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
My invention refers to lathes, which I so construct, as to make the tool-holder or
work on the saddle capable of motion automatically, in longitudinal, angular and
transverse directions.
In the accompanying drawings:
On Sheet 1. Fig. 1 is an elevation of that end of the lathe at the left hand of the
operator.
Fig. 2 is a front elevation of the lathe.
Fig. 3 is a transverse section on the line 1, 1 Fig. 2.
Fig. 4 is a plan of the lathe partly in section with the poppet removed.
Fig. 5 is a transverse section on the line 2-2 Fig. 2.
Fig. 6 is a detail view, shewing, on an enlarged scale, a method of securing the
adjustable worm shaft brackets.
.
On Sheet 2 I have shewn a modification of the improved lathe constructed according
to my invention, Fig. 7 being an end elevation to the left of the operator.-

page_text: Fig. 8 is a front elevation.
Fig. 9 an end elevation to the right hand of the operator.
Fig. 10 a plan partly in section with the poppet and a portion of the saddle
removed.
Fig. 11 a transverse section on the line 3-3 Fig. 8.
Referring to Figs. 1-6 Sheet 1-the bed A of the lathe is of usual construction
and has mounted thereon a saddle B capable of longitudinal or traversing motion.
The saddle slide B¹ is provided with a recessed part B into which fits the lug of the
slide rest (not shewn) and a set screw B³ or other convenient means of fixing is
utilised for attaching the slide rest thereto. In order to permit of using the slide
rest for attaching thereto the work if tho lathe be used for milling or otherwise
there is a separate lug B which fits into the recessed part B on the saddle slide B¹
and the upper end is made so as to receive the lug of the slide rest.
The milling tool is mounted on the slide rest and receives motion from any
convenient source of power.
The bed A has mounted inside thereof a feed shaft C provided with a featherway
and this shaft receives motion from a countershaft D mounted in brackets D' I'
Fig. 4 on the back of the bed A or headstock E. This countershaft D may be
driven direct, from any convenient source of power, for example, by means of cone
speed pulleys D Fig. 4 or it may be driven indirectly from the mandrel by means
of two or more spur wheels such as D' E': The wheel D* may be driven by a
feather on the shaft D so that it may conveniently be moved out of gear with the
wheel E¹ when it is desired to drive the countershaft D direct from the pulleys D³.
A set screw or other suitable device is provided for retaining the wheel D* in position
either in or out of gear with the spur wheel E¹.
On this countershaft D to the left hand of the operator is mounted a bevel wheel D³.
Gearing with this bevel wheel D are two bevel wheels F¹ and G¹ mounted at one end
respectively of two radial shafts F and G which have likewise mounted on the other
ends respectively two worms F2 G communicating motion to worn wheels (E³
mounted on the feed shaft and mandril E³ respectively. It will be understood
that when the mandril is driven by means of the worm wheel E², slow motion is
imparted thereto.
The worm wheels E' (may if desired be readily connected and disconnected by
means of jambing nuts E' O' respectively.
In order to allow of different sized worms and wormwheels being used the
shafts F and G are mounted in bracket bearings F³ G³ which are capable of
revolving round the centre of the countershaft D, see Fig. 6.
In order to allow of motion of the feed shaft C being reversed it is only necessary
for instance to slack off the bracket G³ and move the same so that the worm G³
gears with the other side of the worm wheel C, but it is evident that if desired
other well known reversing gear may be applied at any suitable place.
The bracket G³ is provided with a shoulder G and a sleeve G which passes over
the shaft D and through the bracket D2. The end of the sleeve G is screwed and
provided with a nut G having a handle G' by means of which both the brackets F³ G³
may be secured against the bracket D* in any desired position.
The longitudinal self acting motion of the saddle B is effected by a worm C
Figs. 3 and 4 having a feather which takes into the featherway in the shaft C and
this worm is held in a bracket C, projecting down from the saddle, in such manner
that as the feed shaft C revolves and with it the worm C³, motion is transmitted
from the worm C to a wormwheel H¹ mounted on a shaft H. running in bearings in
brackets B' forming portion of or attached to the saddle B and projecting downwards
below the bed A on each side thereof.
This shaft H has also keyed thereon a pinion H' and as this pinion revolves it
gears with a rack K fixed to the bed A and causes the saddle B to move.
In order to permit of a quick return of the saddle by hand or in order to stop
the longitudinal feed, the feed shaft C is either disconnected by the stopping or
reversing lever D' or the wormwheel His disconnected by the sliding clutch H³

page_text: which is moved by a handle H when the quick return of the saddle may be effected_
by means of a handle H on the shaft H.
In order to permit of a slow longitudinal hand feed there is also mounted on
the shaft C a bevel wheel C with a feather which takes into the featherway in
the shaft C and the bevel wheel C³ is held in the bracket C or in another and
similar bracket, projecting down from the saddle, in such manner that as motion
is communicated to the bevel wheel C the feed shaft Crevolves and with it the
worm C³ thus communicating motion through the worm wheel H₁ pinion H³ rack K
and shaft H to the saddle B. Having disconnected the worm wheel C¹ by loosening
the jambing nut C motion may be communicated to the bevel wheel C by means of a
handle, not shewn, on a shaft L mounted on the saddle in a similar manner to the
shaft H. On this shaft is keyed a bevel wheel L' Fig. 5, which gears into a
bevel wheel L joined by a sleeve to a second bevel wheel L' which gears into the
bevel wheel C. The two bevel wheels L L³ are mounted on a pin L* forming part
of a bracket L' secured to the underside of the saddle.
The back end of the shaft L extends outside of the saddle and has mounted
thereon a spur change wheel 16 or the like which communicates motion directly to
a spur wheel M' on the surfacing feed screw M of the saddle slide B' or indirectly
through an idle wheel which may conveniently be mounted on the back end of the
shaft H. The spur wheels M' and L° may be secured to the spindles M and L by
jambing nuts or any simple form of clutch.
If desired the surfacing and traversing feeds may take place simultaneously
thereby giving an angular motion to the tool or the like."
If surfacing feed only is required the worm wheel H¹ on the shaft H may
be disconnected by the clutch H and motion is obtained through the bevel
wheels C, L, L, I, shaft L and spur gear Le and M¹.
It is evident that the lathe may be worked in various ways, for instance, if the
mandril is to revolve at a relatively quick speed, the shaft F is moved away so that
its worm F cannot gear with the worm wheel E, the counter-shaft may then be
caused to revolve and with it the feed shaft, either by allowing the spur wheel D'
to gear with the spur wheel E' or the counter-shaft may be caused to revolve
independently. If the mandril is to revolve slowly the worm F is caused to gear
with the worm wheel E', the wheel D is thrown out of gear with the wheel E on
the mandril, motion is then imparted to the counter-shaft D and thence by shaft F
to the mandril E³, as shown.
Referring to Figs. 7-11 Sheet 2 instead of so to speak obtaining the surfacing
feed directly from the slow feed handle shaft L it may be obtained from a separate
feed shaft with a featherway mounted preferably at the back of the frame.
In this arrangement also the bed A is of usual construction and has mounted
thereon a saddle B capable of longitudinal motion. The saddle slide B₁ is provided
with a recessed part B into which fits the lug of the slide rest (not shown) and a
set screw B³ or other convenient means of fixing is utilized for attaching the slide
rest thereto. In order to permit of using the slide rest for attaching thereto the
work if the lathe be used for milling or otherwise there is a separate lug B* which
fits into the recessed part B2 on the saddle slide B' and the upper end is made so
as to receive the lug of the slide rest.
The bed A. has mounted inside thereof a countershaft D one end of which is
supported in a bearing forming part of the headstock E. The feedshaft C, which
is in two parts connected by a clutch C, is provided with a featherway and is
mounted in brackets on the front of the bed. This countershaft D may be driven
direct for example by simply extending the shaft sufficiently to the left hand to
receive speed pulleys (not shown) or it may be driven indirectly from the mandril E
by means of two or more spur wheels such as E', N', D. The wheel N¹ is an idle
wheel and is mounted on a pin N mounted in the headstock E. The wheel E which
is not keyed on the mandril E' forms part of the speed pulleys E* which drive the
mandril directly by means of any suitable coupling such as E capable of sliding on
a feather on the mandril E' and secured to the pulleys by means of a screw or pin E..

page_text: When it is desired to drive the mandril indirectly the coupling E is disengaged
from the speed pulleys E.
On this countershaft D to the left hand of the operator is mounted a bevel wheel: D³.
Gearing with this bevel wheel are two bevel wheels F G mounted at one end
respectively of two radial shafts F and G which have likewise mounted ou the
other ends respectively two worms F2 G communicating motion to worm
wheels CE mounted on the feed shaft C and mandril E³ respectively.
The worm wheels E C₁ may if desired be readily connected and disconnected by
means of jambing nuts E' C respectively.
In order to allow of different sized worms and worm wheels being used the
shafts F and G are mounted in bracket bearings F3 G3 which are capable of
revolving round the centre of the conntershaft D (see Fig. 6 Sheet 1) as already
described.
The longitudinal or traversing self acting motion of the saddle B is effected by
a worm C Figs. 8, 10, 11 having a feather which takes into the featherway in the
shaft and this worm is held in a bracket C, projecting from the saddle, in such
manner that as the feed shaft C revolves and with it the worm C³, motion is
transmitted from the worm C³ to a worm wheel H' mounted on a shaft H running
in bearings in brackets Bs forming portion of or attached to the saddle B and
projecting downwards below the bed A on each side thereof.
This shaft H has also mounted thereon sce Fig. 11 a reversing and stopping gear
consisting of two bevel wheels H6 H7 connected together by a sleeve and provided
with a groove H" into which takes the end of a reversing lever H". With either
of these bevel wheels gears a third bevel. wheel H mounted and keyed on the same
spindle H which carries the pinion H* gearing into the rack K attached to the
bed A. One end of the spindle H is carried in a lug on the under side of the
saddle B and the other end is carried in a bearing Ho bolted to the brackets B³ on
the saddle B by which means the motion obtained from the pinion H2 on the
spindle H gearing with the rack K is transmitted to the saddle B.
In order to stop the longitudinal feed or traverse the shaft C is disconnected by
means of the clutch C and in order to permit of a quick return of the saddle by
hand the worm wheel H₁ is disconnected by the sliding clutch H. which is moved
by a screw jambing nut H whereupon the quick return of the saddle may be
effected by means of a handle H³ on the shaft H.
In order to permit of a slow longitudinal hand feed or traverse there is also
mounted on the shaft Ca worm wheel C with a feather which takes into the
featherway in the shaft C and this worm wheel C is held in the jaw of the bracket L'
in such a manner that the feed shaft C having been disconnected from the driving
gear either by slackening the jambing nut C or by disengaging the clutch ( and
motion communicated to the worm wheel C the feed shaft C revolves and with it the
worm C thus communicating motion through the worm wheel H¹ to the shaft H and
by this latter through reversing wheels H H' to the spindle H and by pinion H³
and rack K to the saddle B.
Motion is communicated to the wormwheel C by a worm L' mounted on a
spindle L having a handle L' and carried in the bracket L'.
In order that the worm L' may be thrown out of gear when not required the
bracket is provided with a small vertical movement on the bracket B.. This.
vertical movement may conveniently be obtained by means of a small cam mounted
on a pin L working in a slot in the jaw of the bracket L. The pin L³ is provided
with a handle L°.
The separate feed shaft O is mounted in brackets preferably at the back of the bod
as shown and motion may be obtained direct from the countershaft D by means of
a third radial shaft P-shown in dotted lines-carrying a bevel wheel at one end and
a worm at the other end and similar in every respect to the radial shafts F and G said
worm gearing in a similar manner with a worm wheel O shown in dotted lines,
Figure 10, on the shaft O; or the said shaft O may be driven indirectly through the
shaft C. For this latter purpose the shaft C is provided on the extreme: right; hand...

page_text: with a bevel wheel Q which gears into a bevel wheel R' keyed on one end of a
radial shaft R mounted in an adjustable bearing R2. At the other end of the radial
shaft R is.keyed a second bevel wheel R³ which gears with a hevel wheel R' keyed
on a countershaft or pin R mounted in the end of the frame or bed A. Into this
bevel wheel R* gears also a bevel wheel S' keyed on a second radial shaft S mounted
in an. adjustable bearing S³. On this shaft S is also mounted a worm S' which gears
into a wormwheel 03 on the separate back feed shaft. O the arrangement for securing
and adjusting the bearings R2 S³ is similar in every respect to that described in
connection with the bearings F and G.
Instead of the arrangement already described with bevel wheels these may be
dispensed with and spur or other gearing substituted therefor.
Motion is communicated. from the feed shaft O to the surfacing feed screw M by
means of a bevel wheel O' provided with a feather which takes into the feather way of
the shaft O. The wheel O is provided with a neck which revolves within a bearing
provided in the bracket. I bolted to the saddle B in such a manner that the wheel O*
is compelled to slide along the shaft O in accordance with the movement of the
saddle B. Into this wheel O' gears a bevel wheel T¹ keyed on a vertical spindle
running in bearings in the bracket T. At the upper end of the spindle is keyed a
second bevel wheel T which gears into reversing bevel wheels M' M² connected
by a sleeve and mounted on the surface feeding screw M. A groove M³ in the
sleeve is provided into which takes the end of a reversing handle M*.
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. A lathe provided with a countershaft driven directly from any convenient
source of power or indirectly from the mandril pulley, gearing to communicate
motion to the feed shaft, gearing to communicate motion from the feed shaft to a
pinion mounted on the saddle, said pinion gearing in a rack on the bed, thus
imparting traversing motion to the said saddle substantially as set forth.
2. A lathe provided with a countersbaft driven directly from any convenient
source of power or indirectly from the mandril pulley, gearing to communicate
motion to a feed shaft, gearing to communicate motion from the feed shaft to the
surfacing feed screw, thus imparting surfacing motion to the saddle slide substantially
as set forth...
3. A lathe provided with a countershaft D driven directly from any convenient
source of power or indirectly from a spur wheel E' on the mandril pulley by means
of a spur wheel D' on the said countershaft D, gearing to communicate motion to
a feed shaft C consisting of bevel wheels D on the countershaft D and G¹ on a
radial shaft G mounted in an adjustable bracket bearing G³ on which shaft is also
mounted a worm G' gearing with a worm wheel C¹ on the feed shaft C, motion being
communicated from said. feed shaft C to a shaft H mounted in the saddle B by
means of a worm C on the feed shaft gearing with a worm wheel H' on the said
shaft H which also carries a pinion H2 which gears into a rack K on the bed A thus
imparting traversing motion to the saddle substantially as described and shown with
reference to Figures 1, 2, 3, 4 and 6.
4. A lathe provided with a countershaft D, driven directly from any convenient
source of power, or indirectly from a spur wheel E¹ on the mandril pulley by
means of a spur wheel D' on the countershaft D, gearing to communicate motion
to a feed shaft C consisting of bevel wheels D on the countershaft D. and G₁ on a
radial shaft G mounted in an adjustable bracket bearing G³, on which shaft is also
mounted a worm G gearing with a worm wheel C₁ on the feed shaft C, motion
being communicated from said feed shaft C to a shaft L mounted in the saddle B by
means of a bevel wheel on the feed shaft gearing with a bevel wheel L³ in one
with a bevel wheel. L2 mounted on a stud L on the saddle, said bevel wheel L³,
gearing with another bevel wheel L on the said shaft L, the spur wheel L on the
same shaft gearing with a spur wheel M¹ on the surfacing feed screw.M .thus

page_text: imparting surfacing motion to the saddle slide B₁ substantially as described and
shown with reference to Figs. 1, 24, 5 and 6.
5. A lathe provided with a countershaft D receiving motion from a spur wheel E¹
on the mandril pulley E by an intermediate wheel N' and by a spur wheel D* on said
countershaft, gearing to communicato motion to a feed shaft Chaving a clutch C
consisting of a bevel wheel D on the countershaft and bevel wheel G₁ on a radial
shaft G mounted in an adjustable bracket bearing G³, on which shaft is also mounted
a worm G gearing with a worm wheel C¹ on the feed shaft C, motion being commu-
nicated from said feed shaft to a shaft H mounted in the saddle B by means of a
worm C on the feed shaft gearing with a worm wheel H' on the said shaft H. which
also carries the bevel wheels H and H' to allow of motion in either direction when in
gear with a bevel wheel H8 mounted on a spindle H° carried by the saddle and having
a pinion H2 which gears into a rack K on the bed A thus imparting traversing
motion to the saddle substantially as described and shown with reference to
Figures 7, 8, 10, and 11.
6. A lathe provided with a countershaft D receiving motion from a spur wheel E¹
on the mandril pulley E* by an intermediate wheel N and by a spur wheel D' on said
countershaft, gearing to communicate motion to a feed shaft C having a clutch C
consisting of a bevel wheel D' on the countershaft and bevel wheel G on a radial
shaft G mounted in an adjustable bracket bearing G, on which shaft is also mounted
a worm G gearing with a worm wheel C on the feed shaft C, motion being commu-
nicated from said feed shaft C to a back foed shaft O by means of a bevel wheel Q
mounted on the shaft C, which gears with a bevel wheel R¹ mounted on a radial
shaft R, carried in an adjustable bracket bearing R2 and having at its other end a
bevel wheel R which gears with an idle bevel wheel R* mounted on a stud R, the
bevel wheel R communicating motion to another bevel wheel S¹ mounted on a radial
shaft S carried in an adjustable bracket bearing S and having at its other end a
worm S which gears with a worm wheel O' on the said shaft O, motion being com-
municated to the surfacing foed screw M by means of a bevel wheel O', bevel
wheels T and T mounted on a shaft carried by a bracket T on the saddle and bevel
wheels M1 and M2 mounted on the surfacing feed screw M for communicating motion
in either direction thereto thus imparting surfacing motion to the saddle slide B¹
substantially as described and shown with reference to Figures 7. to 11.
7. A lathe provided with a countershaft D receiving motion from a spur wheel E
on the mandril pulley E by an intermediate wheel N' and by a spur wheel D* on
the said countershaft, gearing mounted on a radial shaft P to communicate motion to
a feed shaft O by a worm wheel 0° motion being communicated to the surfacing feed
screw M by means of a bevel wheel O bevel wheels T¹ and T mounted on a shaft
carried by a bracket T on the saddle and bevel wheels M¹ and M' mounted on the
surfacing feed screw M for communicating motion in either direction thereto thus
imparting surfacing motion to the saddle slide B' substantially as described and shown
with reference to Figures 7, 8, 10 and 11.
8. A lathe provided with a countershaft driven directly or receiving motion
indirectly from the mandril pulley and provided with a bevil wheel which gears with
another bevel wheel mounted on a radial shaft carried by an adjustable bracket
bearing, the other end of the radial shaft being provided with a worm gearing into a
worm wheel on the mandril to impart slow motion thereto substantially as described
and shown.
9. The constructions of lathes as shown on the drawings.