Year: 1895

page_text: Date of Application, 3rd Sept., 1895
!
Complete Specification Left, 3rd July, 1896-Accepted, 3rd Oct.. 1896

page_text: A is the frame of the machine on which the other parts are mounted. The
main driving shaft a, is mounted in suitable journal boxes e, e, (Fig. 2) on the
frame A, and carries the driving pulley B, which is connected by belting to a
source of power, not shown. D is the starting lever by which the lathe may be
started or stopped by hand or automatically, as hereinafter described.
Motion is communicated from this main shaft a, to the cutter carriage as follows:
At one end of the shaft a. is the bevelled gear b, which meshes with the bevelled
gear on the end of the inclined shaft a¹. This inclined shaft a' is mounted in the
journal boxes el e¹ (see Fig. 3) and carries at its lower end the worm d, which
engages the worm gear d¹ mounted on the cutter cam shaft a².
This shaft a, among other things carries the cutter carriage cam E, (Fig. 10)
in the irregular path of which moves the stud or roller j. This roller is mounted
upon the rigid arın F of the cutter carriage G on which is mounted the cutter
head H. This cutter carriage G is mounted upon the tracks g, g (Fig. 2) set in
the framework of the lathe and reciprocating thereon during the operation of the
lathe, as hereafter explained.
Motion is communicated from the main shaft a, to the chuck carriage as
follows:-
The shaft a carries at one end the gear c, which meshes with the gear c¹ (Fig. 2).
This gear is mounted upon the shaft a³, which is adjustably journalled in the
slot h (Fig. 4) of the slotted bracket lever I, the lower end of which terminates in
the sleeve k loosely surrounding the shaft a, journalled in the frame A. The
slotted bracket lever I is provided with a slotted arm 1' (see Fig. 4). A pin f
passes through the slot of the arm 11 and is secured in the frame Á; and the
position of the bracket I to accommodate it to the various sizes of gear substituted
for the gear el is adjusted by the position of the slot with regard to the pin f.
The shaft as also carries the gear c², which meshes with the gear on the shaft a*,
which is thereby made to revolve with a speed proportional to the number of teeth
on the gears c, c', c and c³. As will be readily understood by persons familiar
with this class of machinery this proportion is arranged with a view to the bringing
about a desired number of reciprocations of the chuck carriage compared with the
reciprocations of the cutter carriage which is driven from the same shaft a, as
before explained. A reciprocating motion is communicated to the chuck carriage
from the shaft at, as follows:-The other end of the shaft a is journalled in the
journal box e (Fig. 1) suspended from the frame A and carries the cam J. On
each side of this cam is a crank rod or elbow arm K-K', (see Figs. 3 and 4), the
lower ends of which are held together by the spring, and each of these arms carries
a small roller, which is held against the surface of the cam J by the pressure of
the said spring, which can be adjusted by the nut m. The upper end of one of
these crank rods is rigidly, and the other loosely, secured to the rock shaft a
jounalled in the boxes e³ attached to the framework. This rock shaft carries the
crank L, (see Fig. 1) to which is attached the adjustable eccentric rod M by
means of the pin 71, the other end of which is by means of the pin f secured to
the rigid arm N, extending below the chuck carriage O. This chuck carriage
travels on the tracks g' g², arranged in the framework, and upon which the chuck
carriage moves. This chuck carriage extends the full length of the lathe, and is
supported near the outer ends by the wheels or rollers upon the tracks g* on the
frame A, as shown in Fig. 2.
There are three chucks carried on the chuck carriage; the feeding chuck C,
the driving chuck C, and the carrying chuck C. The first of these C, is fed
along during the operation of the lathe to the driving chuck by means of the
feeding screw n, acting upon the half nut o, which is set in the bottom of the
chuck C, and is lowered into contact with the feed screw or lifted away therefrom
by the lever, (see Figs. 6 and 7). This feeding chuck also carries an adjustable
lug (Fig. 1), which stops the lathe when it reaches a given point as hereafter
explained. The rotation of the feed screw and the consequent advancement of the
9

page_text: feeding chuck C are controlled by change wheels which can be so adjusted as
to produce, say, thirty two different feeds. The feed screw carries at its forward
end the worm wheel d, (Fig. 2), which is driven by the worm d, (see Fig. 12).
This worm is loosely journalled at one end in the box et on the framework A,
and carries the gear (Figs. 2 and 14). The other end of the worm screw d³ is
journalled in the box e mounted upon the same chuck carriage O, and can thus
accommodate itself to the reciprocating motion of the chuck carriage by slipping
back and forth through the journal box e. This gear meshes with gear on the
shaft a which is pivoted in the slot 2 of the slotted bracket lever P, which has the
slotted arm P1, and the handle P². The pin f³ threaded into the framework A
through the slot ³ allows this slotted bracket lever to be raised or lowered to
make the teeth of the gear c mesh with the teeth of the gear c. The other end
of the slotted bracket lever P is hung upon the shaft a journalled in the frame-
work. The shaft as also carries the gear c which meshes with the gear on the
shaft. By altering the proportions of the teeth of these gears the speed of
revolution of the feed screw n can be varied at pleasure.
The shaft a derives its motion from the gear ca mounted on its outer end, and
the teeth of which mesh with the geared drum c mounted on the shaft a journalled
to the framework, (see Fig. 2), which drum also meshes with the gear co on the
shaft a, (see Fig. 15), supported by the journal box e attached to the framework.
This shaft a also carries the bevelled gear 62, which meshes with the beveiled
gear mounted upon a shaft a¹0 (see Figs. 2, 4 and 15). This shaft a¹ runs
through the journal box e at right angles to the shaft a' and carries at its other
end the bevelled gear b*. The bevelled gear 6 meshes with the bevelled gear b
on the shaft all, which is journalled in the journal boxes e e, (see Figs. 2 and 4)
and which carries at one end the bevelled gear 6, which meshes with the bevelled
gear 67 on the main driving shaft a.
The revolution therefore of the feed screw n comes from the main shaft through
the following mechanism: The bevelled gear drives bevelled gear_66, shaft a
and bevelled gear 1, which are rigidly connected with each other. The bevelled
gear drives the bevelled gear 6, shaft a⁰ and bevelled gear b³. The bevelled
gear, drives the bevelled gear 62, shaft a and gear clo, which are rigidly con-
nected together. The gear 10 drives the gear c, which drives gear of the
shaft a; and hence gear c' which drives gear, c, and c, and the worm screw d³,
upon which the latter gear is mounted, and which in turn drives the worm wheel d³,
which is rigidly secured to the feed screw n mounted in the slot of the chuck
carriage O.
The feeding chuck C, which receives one end of the wood, or other material to be
worked upon, and presses it through the driving chuck C₁, is of usual construction,
except as to the lever p, and its accompanying mechanism for clutching the feed
screw. So also is the carrying chuck C2, which receives the finished work. The
driving chuck C however merits particular description as it not only rotates the
wood which has been fed to it from the feeding chuck, but can also, when required,
give the wood a peculiar motion, which produces what is known as twist work.
The simple rotation of the chuck C' is produced as follows: The chuck is
provided with a worm wheel d which engages with the worm d³ (see Fig. 12) on
a prolongation of the shaft a", (see Figs. 2 and 4), the outer end of which is
loosely journalled in the box e carried on the chuck carriage O, so that said worm
can accommodate itself to the reciprocation of the chuck carriage without ceasing
to mesh with the worm wheel d. As before stated the shaft a¹¹ is driven from the
main shaft by the gears 6 and 7.
The revolution of the cutter head H on the carriage is produced independently
of the reciprocation of the latter by the pulley B' mounted on the shaft a 12, which
carries said cutter head and is journalled in the boxes e 9, carried on the cutter
carriage. This pulley B' is driven by belting connected with a source of power
not shown.
Au irregular movement is communicated to the driving chuck when it is desired

page_text: to make what is known as twist work by the following mechanism: In making
what is known as twist work it is necessary that after a certain pre-determined
amount of the linear surface of the wood or other material to be operated upon,
has been acted upon by the revolving cutter, the wood should be turned bodily so
as to present a different point of its periphery to what may be called the beginning
of the rotary path of the cutter, and that after a certain length of surface is
operated upon in this new position another turn should be given to present a still
different starting point, and so on, as often as desired until the whole length of the
wood or other material has been treated.
.
The twist work lever g' is pivoted on the shaft a 13 in the bracket bearing to
mounted on the frame A, (see Figs. 3, 4, and 5). The upper arm of this lever is
graduated as shown, and provided with a longitudinal slot, in which is adjustably
fixed by the pin f' a crank rod g³, the other end of which is fastened by the pin fo
to the adjustable pawl.s pivoted by the pin f to the bracket bearing e secured to
the forward part of the driving chuck C¹. The set screw s¹ is inserted through the
pawls and bears upon the inclined surface of the bracket el. It will be readily
seen that by adjusting the pin f in the slot and correspondingly adjusting the
set screws, any desired amount of throw can be communicated to the forward
part of the driving chuck C, and thence to the wood by any well known mechanism
and, consequently the desired amount of turn be given to the wood, as above
explained..
:
To prevent too sudden a shock to the chuck, when this twist work lever is
thrown, an air cushion is provided, which consists of the cylinder R mounted upon
a stationary part of the chuck C' by the box bearing e¹. A jointed piston rod r
operates the piston of the cylinder R, and is adjustably mounted by the pin "in
the slot of an arm 72 mounted upon the shaft a, under the action of the spring I
surrounding said shaft, (see Figs. 8 and 9) the function of the spring being to
return the piston rod and the lever to their normal position after the throw is
completed.
The lower arm of the graduated lever rests normally in the path of the pin or stud/*
carried on the outer surface of the hevelled gear 63, the revolution of which forces
the lower arm of the lever q¹ out of the position, thereby giving the crank rod g²
its forward throw.
When it is not desired to make twist work, the lower arm of the lever q¹ is held
out of the path of the stud 18 by the catch t pivoted to the framework A and
operated by the rod t¹ also pivoted to the frame and controlled by the spring 12 (see
Figs. 2, 3, 5 and 15).
As before stated the lathe is started or stopped by the starting lever D, which
may be operated by hand, or automatically by the machine. In addition to this
the revolution of the driving chuck and the feed screw may be started or stopped
by a transmitting mechanism operated by the cutter carriage in its reciprocating
motion. These starting and stopping mechanisms will now be described.
The rod S is pivoted at one end to the starting lever by the pin f° (see
Figs. 1, 2, 3, and 4), and is supported by the bracket e 13 on the frame A, (see
Fig. 1). The other end is rigidly but adjustably secured at i to the elbow arm u
which slides through the slot (Fig. 4) of the bearing box e" attached to the
framework. A, (see Fig. 1). The other end of the elbow arm u normally presses
against the detent u pivoted to the frame A and operated by the catch u² also
pivoted to the framework. The detent u¹ is returned to its normal position after
displacement by the springs 13, the other end of which is attached to a fixed point
in the framework. The coiled spring surrounds the rod S to which one end of
said spring is adjustably attached at 1, the other end of said spring bearing against
the bearing es before mentioned.
The operation of this stopping mechanism is as follows: When the feeding
chuck Chas moved along the chuck carriage towards the driving chuck C, the
distance for which the adjustable lug g was originally set, the lug y strikes against
the upper part of the catch u³, and by deflecting the same releases the detent u¹,

page_text: which moved by spring thereby frees the elbow arm u, which at once springs
outward driven by the elasticity of the spring 1, carrying with it the rod S and the
end of the lever D. This lever being pivoted to the framework at t (Fig. 2)
moves its other end in the opposite direction and therefore releases the clutch of
the driving pulley B, whereby the shaft a ceases to revolve.
There may also be a separate transmitting mechanism for stopping the revolution
of the feeding screw. This mechanism shown in detail in Fig. 15, is operated by
the reciprocating motion of the cutter carriage G (see Fig. 2).
The shaft a¹0 in which the bevelled wheels 63 and 6 are mounted need not be
rigidly connected with the one or the other of said bevelled wheels as before
described, but may be provided with a clutch which is not visible in Fig. 15 since
it is enclosed in the journal box bearing e and which may be made so as to engage
or disengage one of the bevelled wheels 1463 from the shaft, for instance the
wheel. When disengaged no motion will be communicated from wheel to
wheel through the shaft a10 consequently all the mechanism operated by
the whee! 3 will be deprived of power.
The movable part of the clutch is operated by a pin f10 connected thereto and
passing through the slot in box and through the slot in the one arm of bell
crank lever T pivoted at c. The other arm of lever T is connected by the pin i
to the rod T sliding in the bearing mounted on the framework A. On the
rod is an adjustable collar W and between the latter and the end of the
bearing e 15 is a spring 10 the action of which tends to throw the parts into such
position that the clutch is disengaged.
The other end of rod T'is connected by the sleeve v and the pin i 5 to the one arm
of bell crank lever T2 pivoted at to the frame A and having on its other arm the
pin ". The pin f¹ is drawn back (against pressure of spring 150) by the arm v¹
of the sliding bar T³ carried in the bearing ele fastened on the framework. The
other end of bar T3 is connected to one arm of the bell crank lever T* (see Fig. 2).
pivoted at to the framework A while the other arm of this lever T is con-
nected adjustably by rod T to a lug e" on the cutter carriage G by means of
a nut s
The operation is as follows:-The forward motion of the carriage causes the
rod T³ to move gradually to the left, thus permitting the pin f" to move to the
left and allowing the spring (Fig. 15) to expand and move the clutch until
the latter is out of engagement. When the carriage G recedes the rod T3 will
return to the right, the pin f" will be retracted, the spring 150 again brought into
compression and the clutch returned into engagement. The movement is of small
amplitude and the teeth of the clutch may be such as to permit continuing movement
of the moving part of the clutch after engagement.
U is the drop centre mounted on suitable tracks 93 (see Fig. 13) on the chuck
carriage and holds up the ends of the finished work as it comes from the driving
chuck until it passes the journal boxes, when the end of the finished work is
taken up by the carrying chuck C, and the drop centre is dropped down out.
of the way..
The driving chuck is also provided with a hand wheel W the teeth of which
can be made to mesh with corresponding teeth on the chuck by means of the
clutch W (see Fig. 2). By means of this hand wheel the operator can if desired
in making twist work give the desired turn to the chuck, which was before described
as given automatically by the twist work lever q'.
Dated this 3rd day of September 1895.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, W.C.,
Agents for Applicant.

page_text: follows: At one end of the shaft a, is the bevellel gear b, which meshes with the
bevelled gear 6 on the end of the inclined shaft a¹. This inclined shaft a¹ is
mounted in the journal boxes e e' (see Fig. 3) and carries at its lower end the
worm d, which engages the worm gear d' mounted on the cutter cam shaft a².
This shaft a among other things carries the cutter carriage cam E Fig. 10 in
the irregular path of which moves the stud or roller j. This roller is mounted
upon the rigid arm F of the cutter carriage G on which is mounted the cutter
head H. This cutter carriage G is mounted upon the tracks g, g, Fig. 2 set in the
frame work of the lathe and reciprocating there during the operation of the
lathe, as hereafter explained.
Motion is communicated from the main shaft a, to the chuck carriage as
ollows:
The shaft a, carries at one end the gear c, which meshes with the gear cl
(Fig. 2). This gear c² is mounted upon the shaft a³, which is adjustably
journalled in the sloth Fig. 4 of the slotted bracket lever I, the lower end of
which terminates in the sleeve k loosely surrounding the shaft a journalled in the
frame A. The slotted bracket lever I is provided with a slotted arm, 1,
(see Fig. 4). A pin f passes through the slot ' of the arm 1¹ and is secured in
the frame A; and the position of the bracket I to accommodate it to the various
sizes of gear substituted for the gear c' is adjusted by the position of the slot
with regard to the pin f.
The shaft a also carries the gear c³, which meshes with the gear c³ on the
shaft at, which is thereby made to revolve with a speed proportional to the number
of teeth on the gears c, c¹, c² and c³. As will be readily understood by persons
familiar with this class of machinery this proportion is arranged with a view to the
bringing about a desired number of reciprocations of the chuck carriage compared
with the reciprocations of the cutter carriage which is driven from the same
shalt a, as before explained. A reciprocating motion is communicated to the
chuck carriage from the shaft a as follows: The other end of the shaft a*, is
journalled in the journal box e2 Fig. 1 suspended from the frame A and carries
the cam J. On each side of this cam is a crank rod or elbow arm K-K',
(see Figs. 3 and 4), the lower ends of which are held together by the spring 1,
and each of these arms carries a small roller j', which is held against the surface
of the cam by the pressure of the said spring, which can be adjusted by the
The upper end of one of these crank rods is rigidly, and the other
loosely, secured to the rock shaft a journalled in the boxes e³ attached to the
framework. This rock shaft carries the crank L, (see Fig. 11), to which is
attached the adjustable eccentric rod M by means of the pin f, the other end of
which is by means of the pin 2 secured to the rigid arm N, extending below the
chuck carriage O. This chuck carriage travels on the tracks 91-92, arranged in
the framework, and upon which the chuck carriage O moves. This chuck carriage
extends the full length of the lathe, and is supported near the outer ends by the
wheels or rollers upon the tracks g2 on the frame A, as shown in Fig. 2.
nut m.
There are three chucks carried on the chuck carriage; the feeding chuck C,
the driving chuck C', and the carrying chuck C². The first of these C, is fed
along during the operation of the lathe to the driving chuck by means of the
feeding screw n, acting upon the half nut o, which is set in the bottom of the
chuck C, and is lowered into contact with the feed screw or lifted away therefrom
by the lever p, (see Figs. 6 and 7). This feeding chuck also carries an adjustable
lug 9, (Fig. 1), which stops the lathe when it reaches a given point as hereafter
explained. The rotation of the feed screw and the consequent advancement of
the feeding chuck C are controlled by change wheels which can be so adjusted as
to produce, say, thirty two different feeds. The feed screw carries at its forward
end the worm wheel d³, (Fig. 2), which is driven by the worm d³, (see Fig. 12).
This worm d is loosely journalled at one end in the box et on the framework A,
and carries the gear c (Figs. 2 and 14). The other end of the worm screw d³ is
journalled in the box e mounted upon the same chuck carriage O, and can thus

page_text: accommodate itself to the reciprocating motion of the chuck carriage by slipping
back and forth through the journal box e. On shaft d³ is feathered a gear
wheel c¹. This gear meshes with gear c' on the shaft a which is pivoted in the
slot of the slotted bracket lever P, which has the slotted arm P¹, and the
handle P. The pin f³ on bracket threaded into the framework A through a
the slot allows this slotted, bracket leyer to be raised or lowered to make the
teeth of the gear mesh with the teeth, of the gear . The other end of the
slotted bracket lever P is hung upon the shaft a journalled in the framework.
The shaft a also carries the gear c which meshes with the gear c' on the shaft a'.
By altering the proportions of the teeth of these gears the speed of revolution of
the feed screw n can be varied at pleasure.
The shaft a derives its motion from the gear 8 mounted on its outer end, and
the teeth of which mesh with the geared drum c mounted on shaft a³ journalled
to the framework, (see Fig. 2), which drum also meshes with the gear co on the
shaft a, (see Fig. 15), supported by the journal box attached to the framework.
This shaft 'a also carries the, bevelled gear 62, which meshes with the bevelled
gear 3 mounted upon a shaft al (see Figs. 2, 4 and 15)... This shaft a runs
through the journal hoxe at right angles to the shaft a and carries at its other
end the bevelled gear b'. The bevelled gear meshes with the bevelled gear 65
on the shaft a", which is journalled in the journal boxes e e², (see Figs. 2 and 4),
and which carries at one end the bevelled gear 66, which meshes with the bevelled
gear on the main driving shaft a.
275 T
"
The revolution therefore of the feed screw n comes from the. main shaft
through the following mechanism: The bevelled, gear by drives, bevelled gear be,
sliaft a and bevelled gear 6, which are rigidly connected with each other. The
bevelled' gear 6 drives the bevelled gear 6, shaft a10 and bevelled gear 63. The
bevelled gear drives the bevelled gear 62, shaft aand gear, which are
rigidly connected together. The gear o drives the gear c, which drives gear, cª
of the shaft a'; and hence gear c which drives gear e, c, and c, and the worm
screw d, upon which the latter gear is mounted, and which in turn drives the
worm wheel d³, which is rigidly secured to the feed screw n mounted in the
slot of the chuck carriage O.
The feeding chuck C, which receives one end of the wood, or other material
to be worked upon, and presses it through the driving chuck C', is of usual con-
struction, except as to the lever p, and its accompanying mechanism for clutching
the feed screw. So also is the carrying chuck C, which receives the finished
work. The driving chuck C¹ however merits particular description, as it not
only rotates the wood which has been fed to it from the feeding chuck, but can
also, when required, give the wood a peculiar motion, which produces what is
known as twist work.
The simple rotation of the chuck C¹ is produced as follows: The chuck is
provided with a worm wheel d', which engages with the worm d³ (see Fig. 12),
on a prolongation of the shaft all, (see Figs. 2 and 4), the outer end of which is
loosely journalled in the box e carried on the chuck carriage O, so that said
worm can accommodate itself to the reciprocation of the chuck carriage without
ceasing to mesh with the worm wheel d. As before stated the shaft a" is
driven from the main shaft by the gears 66 and b..
The revolution of the cutter head H on the carriage is produced independently
of the reciprocation of the latter by the pulley B₁ mounted on the shaft al,
which carries said cutter head, and is journalled in the boxes e, carried on the
cutter carriage. This pulley B is driven by belting connected with a source of
power not shown.
An irregular movement is communicated to the driving chuck when it is desired
to make what is known as twist work by the following mechanism: In making
what is known as twist work it is necessary that after a certain pre-determined
amount of the linear surface of the wood or other material to be operated upon,
has been acted upon by the revolving cutter, the wood should be turned bodily

page_text: so as to present a different point of its periphery to what may be called the
beginning of the rotary path of the cutter, and that after a certain length of
surface is operated upon in this new position another turn should be given to
present a still different starting point, and so on, as often as desired until the
whole length of the wood or other material has been treated.
The twist work lever g' is pivoted on the shaft a" in the bracket bearing eo mounted
on the frame A, (see Figs. 3. 4. and 5). The upper arm of this lever is graduated as
shown, and provided with a longitudinal slot h, in which is adjustably fixed by the
pin fa crank rod 9 the other end of which is fastened by the pin to the
adjustable pawl s pivoted by the pin f to the bracket bearing e fixed on a
friction ratchet ring C10 surrounding the forward part of the driving chuck C¹.
The set screws is inserted through the pawls and bears upon the inclined surface
of the bracket e". It will be readily seen that by adjusting the pin f in the slot h
and correspondingly adjueting the set screw sl, any desired amount of throw can
be communicated to the forward part of the driving chuck C¹, and thence to the
wood by any well known mechanism and consequently the desired amount of turn
be given to the wood, as above explained.
To prevent too sudden a shock to the chuck, when this twist work lever is
thrown, an air-cushion is provided, which consists of the cylinder R mounted upon
a stationary part of the chuck C¹ by the box bearing e¹. A jointed piston rod r
operates the piston of the cylinder R, and is adjustably mounted by the pin f' in
the slot of an arm 2 mounted upon the shaft a¹³, under the action of the spring
surrounding said shaft, (see Figs. 8 and 9), the function of the spring being to
return the piston rod and the lever to their normal position after the throw is
completed.
The lower arm of the graduated lever rests normally in the path of the pin or
stud f carried on the outer surface of the bevelled gear 63, the revolution of which
forces the lower arm of the lever q¹ out of position thereby giving the crank rod q³
its forward throw.
When it is not desired to make twist work, the lower arm of the lever q' is held
out of the path of the stud 8 by the catch t pivoted to the framework A and
operated by the rod t also pivoted to the frame and controlled by the spring /
(see Figs. 2, 3, 5, and 15).
As before stated the lathe is started or stopped by the starting lever D, which
may be operated by hand, or automatically by the machine. In addition to this
the revolution of the feed screw may be started or stopped by a transmitting
mechanism operated by the cutter carriage in its reciprocating motion. These
starting and stopping mechanisms will now be described.
The rod S is pivoted at one end to the starting lever by the pin f' (see
Figs. 1, 2, 3, and 4), and is supported by the bracket els on the frame A, (see
Fig. 1). The other end is rigidly but adjustably secured at i to the elbow arm u,
which slides through the slot h' Fig. 4 of the bearing box e" attached to the frame-
work A, (see Fig. 1). The other end of the elbow arm u presses against the
detent u pivoted to the frame A when said detent u¹ is displaced and held by the
catch also pivoted to the framework. The detent u when released from
catch u² is returned to its normal position after such displacement by the springs 13,
the other end of which is attached to a fixed point in the framework. The coiled
spring surrounds the rod S to which one end of said spring is adjustably
attached at 1, the other end of said spring bearing against the bearing e¹³ before
mentioned.
The operation of this stopping mechanism is as follows:-When the feeding
chuck C has moved along the chuck carriage towards the driving chuck C¹, the
distance for which the adjustable lug was originally set, the lug 9 strikes against
the upper part of the catch &, and by deflecting the same releases the detent u¹
which moved by the spring 13 thereby frees the elbow arm u, which at once springs
outward driven by the elasticity of the spring , carrying with it the rod S and the
end of the lever D. This lever being pivoted to the framework at (Fig. 2)
"

page_text: moves its other end in the opposite direction and therefore releases the clutch of
the driving pulley B, whereby the shaft a ceases to revolve.
There may also be a separate transmitting mechanism for stopping the revolution
of the feeding screw. This mechanism shown in detail in Fig. 15, is operated by
the reciprocating motion of the cutter carriage G (see Fig. 2).
The shaft a¹0 in which the bevelled wheels and 64 are mounted need not be
rigidly connected with the one or the other of said bevelled wheels as before
described but may be provided with a clutch which is not visible in Fig. 15 since
it is enclosed in the journal box bearing e10 and which may be made so as to engage
or disengage one of the bevelled wheels 646 from the shaft, for instance the
wheel b. When disengaged no motion will be communicated from wheel 6*
to wheel & through the shaft a consequently all the mechanism operated by the
wheels will be deprived of power.
The movable part of the clutch is operated by a pin connected thereto and
passing through the slot 8 in box e and through the slot h° in the one arm of bell
crank lever T pivoted at c¹³. The other arm of lever T is connected by the pin it
to the rod T sliding in the bearing e¹s mounted on the framework A. On the
rod T is an adjustable collar W and between the latter and the end of the
bearing e is a spring 10 the action of which tends to throw the parts into such
position that the clutch is disengaged.
The other end of rod T¹ is connected by the sleeve v and the pin ³ to the one
arm of bell crank lever T2 pivoted at to the frame A and having on its other arm the
pin The pin f" is drawn back (against the pressure of spring 100) by the
arm of the sliding bar T³ carried in the bearing e fastened on the framework.
The other end of bar T³ is connected to one arm of the bell crank lever T* (see
Fig. 2) pivoted at 7 to the framework A while the other arm of this lever 'T' is
connected adjustably by rod T³ to a lug e" on the cutter carriage G by means of
a nut s².
The operation is as follows:-The forward motion of the carriage causes the
rod T to move gradually to the left, thus permitting the pin f" to move to the
left and allowing the spring (Fig. 15) to expand and move the clutch until
the latter is out of engagement. When the carriage G recedes the rod T³ will
return to the right, the pin f" will be retracted, the spring 10 again brought into
compression and the clutch returned into engagement. The movement is of small
amplitude and the teeth of the clutch may be such as to permit continuing
movement of the moving part of the clutch after engagement.
U is the drop centre mounted on suitable tracks 93 (see Fig. 13) on the chuck
carriage and holds up the ends of the finished work as it comes from the driving
chuck until it passes the journal boxes, when the end of the finished work is
taken up by the carrying chuck C' and the drop centre is dropped down out of
the way.
The driving chuck is also provided with a hand wheel W¹ the teeth of which can
be made to mesh with corresponding teeth on the driving sleeve of the chuck by
means of the pawl W' (see Fig. 2). By means of this hand wheel the operator can
if desired in making twist work give the desired turn to the chuck, which was
before described as given automatically by the twist work lever q¹.
The feeding chuck C causes the longitudinal movement of the work through the
driving chuck C¹ but does not in any way govern the rotation of the work upon its
longitudinal axis. The driving chuck is thus of such a nature as to allow the work
to pass freely longitudinally through it while governing its rotation continuously
or intermittently as the case may be according to the nature of the work. The
work blank is usually prismatic in shape and consequently can be guided through
a passage left between cheeks in the interior of the driving chuck which are
adjustable to give to such passage the necessary cross sectional size in a manner
similar to the cheeks of chucks in general. The interior part of the chuck
carrying these cheeks is integral with that part in which the twist work operates
and with the hand wheel W₁; but the worm wheel d' is carried by a sleeve loosely

page_text: rotating around the interior part of the chuck, the said sleeve having at one ent
the ratchet teeth with which the pawl W engages. This pawl being in engage-
ment causes the rotation of the wheel d' to be communicated to the interior part of
the chuck but the pawl will give and allow of the independent movements that are
to be given to the interior of the chuck (and therefore to the work) either by the
action of the twist work mechanism or by hand action through hand wheel W',
which hand action is also necessary for the preliminary adjustment of the work.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
1. An automatic wood working lathe, which is provided with a feeding chuck, a
driving chuck, and a carrying chuck, and their operating mechanisms, and with a
drop centre interposed between the driving chuck and the carrying chuck, and
devices for operating the same substantially as shown and described.
2. An automatic wood working lathe provided with a feeding chuck, a driving
chuck, and a carrying chuck, and their operating mechanisms and with an adjust-
able stop carried on the feeding chuck, and operating in connection with devices
substantially as described, whereby the starting lever is automatically thrown to
stop the operation of the lathe, substantially as shown and described.
3. In an automatic wood working lathe, a feed screw turning in the chuck
carriage whereby the feeding chuck is fed along said carriage and devices sub-
stantially described, whereby said feed screw is made to feed or release said feeding
chuck, substantially as described, and for the purposes specified.
4. An automatic wood working lathe provided with a feeding chuck, a driving
chuck, and a drop centre, and their operating mechanisms, and a reciprocating
cutter carriage, and its operating mechanism, and with devices substantially as
described, operated by said cutter carriage, whereby the action of the mechanism
for operating the feed chuck and driving chuck is started or stopped, substantially
as shown and described.
5. An automatic wood working lathe provided with a reciprocating cutter
carriage, and its operating mechanism, a reciprocating chuck carriage, and its
operating mechanism, and a graduated lever and its operating mechanism, whereby
a desired turn may be given to the chuck, substantially as shown and for the
purposes specified.
6. In combination with a twist work imechanism for an automatic wood working
lathe, a piston and cylinder or other suitable device which acts as an aircushion
between said twist work mechanism and the driving chuck to which the same is
applied, substantially as shown, and for the purposes specified.
7. A twist work mechanism for automatic wood turning lathes, which consists in
a graduated lever adjustably connected with the chuck and a clutch gear bearing
a suitable stud whereby said lever is operated in one direction, and mechanism for
returning said lever to its normal position, substantially as shown and described.
8. An automatic wood working lathe provided with a set of interchangeable
gears, and the adjustable supporting device whereby motion is communicated to
the feed screw which feeds the feed chuck, substantially as described and for the
purposes specified.
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, W.C., Agents for Applicant.