Improvements in Turret Lathes.
Year: 1898

page_text: Date of Application, 12th Feb., 1898—Accepted, 11th Mar., 1899
Improvements in Turret Lathes.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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:―
This invention relates to an improvement in turret turning lathes of what may
be called the screw-machine type, the object being to produce a machine adapted
to have a very wide range of work and adjustment, considering its number of
parts.
With these ends in view, the invention consists in a machine having certain
details of construction and combinations of parts as will be hereinafter described
and pointed out in the claims.
In the accompanying drawings:-
Fig. 1 represents a view in side elevation of a lathe constructed in accordance
with this invention.
Fig. 2, a plan view thereof.
Fig. 3 an enlarged view in vertical section on the line a-b of Fig. 1.
Fig. 4, a view in vertical section on the line c-d of Fig. 3, and looking to the
left.
Fig. 5, a similar view on the line e-f of the same figure and looking in the same
direction.
Fig. 6, a broken vertical longitudinal central section through the turret and
turret-adjuncts of the lathe.
Fig. 7, a broken view in end elevation of the lathe looking at the auxiliary
tool-carriage and the adjuncts thereof.
Fig. 8, an enlarged reverse sectional plan view of the turret and the adjuncts
thereof.
Fig. 9, a detached plan view of the slide-holder with the slide removed, but
showing the binding rod of the turret in section and the operating-head secured
to the lower end of the binding-rod in plan, the operating head being in the posi-
tion it will occupy just after starting the slide.
Fig. 10, a view in vertical section on the line hi of Fig. 9, and showing the
turret-operating-dog of the slide-holder.
•
Fig. 11, a detached plan view of the operating-head secured to the lower end of
the binding-rod.
Fig. 12, an edge view thereof.
Fig. 13, an end view thereof.
Fig. 14, a detached plan view of the spring guide rod.
Fig. 15, a similar view of the spring.
Fig. 16, a detached plan view of the yielding dog.
Fig. 17, a detached plan view of the slide with the locking-bar removed.

page_text: ployed to operate the locking-bar.
Fig. 21, an end view of the same parts.
Fig. 22, a detached view of the lever in side elevation.
Fig. 23, a detached view in side elevation of the chambered pawl,
Fig. 24, an edge view thereof.
Fig. 25, a detached side elevation of the chambered pawl spring.
Fig. 26, a detached plan view of the bracket in which the knuckle-lever and
chambered pawl are suspended.
Fig. 27, a view of the same in side elevation.
Fig. 28, an end view thereof.
Fig. 29, a detached view in side elevation of the operating-block together with
its adjusting nut.
Fig. 30, a broken view partly in elevation and partly in vertical section of the
turret-mechanism, and particularly designed to show the means employed for the
rotation of the turret.
Fig. 31, a broken view in side elevation of a screw-machine provided with this
improved tool-box, and also provided with a horizontally-arranged, horizontally
adjustable rack for co-action therewith.
Fig. 32, an enlarged view of the box-tool in front elevation.
Fig. 33, a view in vertical section on the line a- of Fig. 32.
Fig. 34, a view in vertical section on the line cd of Fig. 33.
Figs. 9 9 9 and 9" show details of the operating head hereinafter described.
The first feature of the invention to be described is the means employed for
reversing the rotation of the work-holding chuck and for varying the speed with
which the cutting tools are advanced toward and retired from the same.
In carrying out this part of the invention a single cam-disk A is employed,
whereas prior machines have generally employed two cam-disks, one for reversing
the work-holding chuck, and one for providing for variations in the speed with
which the cutting tools are advanced toward and retired from the said chuck. The
said cam-disk A is provided with two separate sets of cams, of which the cams a
are the reversing-cams, and a the speed cams. The said cams a co-act with an
anti-friction roller B, mounted upon the under face of a slide B₁, guided between.
studs bb, and pivotally connected at one end with the lower end
of clutch-lever 12, hung upon
ah
a horizontal stud B3, and having
its forked upper end connected, in the usual manner. with the collar B
of the clutch 15, which is located between the right-hand puller C,
and the left-hand pulley C, the said pulleys running in opposite direc-
tions, and being coupled with the shaft D. carrying the work-holding chuck D,
by means of the clutch B, according as it is desired to have the work rotate in
one direction or the other. It will readily be understood that by varying the mum-
ber of the reversing cams a upon the cam-disk A, and by suitably applying the
said cams to the said disk, the work-holding chuck may be reversed as often as
desired, and at any desired intervals.
vice versa.
The speed-cams a¹ applied to the cam-disk A, co-act with a stud e located upon
the lower end of the belt-shifting lever E, which is hung upon a horizontal stud E',
and formed at its upper end with a fork E², receiving the belt, which is shifted by the
action of the lever from the fast-driving pulley F to the slow driving pulleyF¹, and
The said pulley F is rigidly secured to an enclosed shaft F, which passes
through a hollow shaft F3, to which the pulley F¹ is rigidly secured, the said shafts F
and F3 being located directly below the worm gear G2. To the opposite end of the
shaft F2 is secured a cup F, provided with a stud F5, upon which is mounted a
pinion F, which is therefore located eccentrically with respect to the center of the
cup and the shaft F2. The said pinion F meshes into two gear-wheels F' and F8

page_text: simultaneously, the said wheels corresponding in size, but differentiated in the
number of their teeth, the gear-wheel F having one tooth less than the gear-
wheel F. The gear-wheel F7 is located within the cup F, and fixed upon the
adjacent end of the tubular shaft F3, while the gear-wheel F8 is mainly located
within the cup F, but not entirely so, and loosely mounted upon the said end of
the tubular shaft F3. The said gear F8 is provided with a ratchet-wheel F, the
teeth of which are engaged by a pawl F10 extending upwardly, and pivoted at its
lower end to the oil-box G, through which the solid and tubular shafts F2 and F3
pass, and which contains the worm G', which is mounted upon the tubular shaft F³,
and which meshes into the teeth of the worm-gear G, which in turn is rigidly
secured to the shaft G³ carrying the cam-disk A already described. It will be
understood that the driving mechanism just described, forms what is technically
known in mechanics as a planet-motion." When the belt is running upon
the fast pulley F, the power will be communicated to the worm-gear G² through
the cup F, pinion F, gear-wheels F7 and Fs, and the tubular shaft 3, and be so
reduced in speed that the gear-wheel will move but very slowly, for the reason that
one complete revolution of the shaft F2 and cup F will only rotate the tubular
shaft through a distance represented by one tooth of the gear-wheel F8, which
has one more tooth than the gear-wheel F7. In this connection it may be ex-
plained that as the cup F revolves and carries the pinion F with it, the same will
gain what is represented by one tooth on the wheel 17, during each revolution of
the cup, because the pinion also meshes into the teeth of the wheel 18, which
contains one more tooth than the wheel F7. Therefore the pinion Fo operates upon
the wheel F as a point of purchase to push the wheel F and turn the shaft F3,
the wheel 18 being prevented from turning backward by means of the pawl F.
It will thus be seen that when the belt is running upon the fast pulley F, the gear-
wheel G2 will be driven very slowly. On the other hand, when the belt is running
on the pulley F, which is mounted directly upon the tubular shaft F³, the gear-
wheel will be run much more rapidly. When the tubular shaft F³ is running as
last described, the parts of the planet motion will be slowly driven idly.
The speed with which the gear-wheel G3 runs determines the speed of the shaft G³
which carries the cam-drum 19, the speed of which determines the speed with
which the cutting instrumentalities are advanced toward and retired from the work-
holding chuck D¹.
Particular attention is called to the fact that the planet motion mechanism and
the driven-pulleys F and F are located at opposite ends of the two shafts, and
below the gear-wheel G2, and very near the bottom of the machine. This is a con-
venient location for this mechanism, and permits the worm-gear G² to be constantly
submerged in oil, which is desirable in a machine of this class, but which cannot
so conveniently be done if the worm-gear is located near the top of the machine.
The next feature of the improvement to be described is the mechanism for
operating and frictionally binding the turret H in which a portion of the cutting.
tools are mounted. The said turret is itself mounted for step by step rotation upon
and reciprocating motion with a slide I, which in turn is mounted for reciprocation
in a slide-holder I', adjustably mounted upon the bed 12 of the frame 13 of the
lathe. The turret H rotates upon a heavy vertically arranged turret-stud-H
having a beveled surface h, a shoulder h, a reduced lower end h², and a threaded
neck, the latter receiving a nut H2 located in a recess i formed for it in the
under face of the slide to which the stud H¹ is thus secured, the nut H² drawing
the shoulder h¹ of the stud down upon the hub I of the slide. For the positive
step by step rotation of the turret it is provided with a depending operating-ring J,
having in its lower edge a series of notches J', which will vary in number and
location according to the desired operation of the turret. The said notches receive
a spring-actuated pawl J2, carried by an operating disk J3, which is mounted in
the upper face of the slide I, so as to rotate upon the hub I thereof; the said disc .J³
is therefore located directly under the turret. The lower face of the disk is formed

page_text: with a segmental channel J*, receiving a coiled spring, the inner end of which
passes over a curved finger secured to a block j fastened by means of a pin
to the slide 1. The opposite end of the spring bears against an operating-pin or
stud Jo, depending from the disk in position to engage with the tooth K of a turret-
operating dog K, mounted in the forward end of the slide-holder I. When the
slide moves forward, to advance the turret to the work, the pin Jo leaves the tooth K
of the dog ¹, and allows the spring J to expand and reversely rotate the disk J
for a sufficient distance to permit the re-engagement of the pawl J thereof with
the next succeeding notch J in the operating-ring J rigidly secured to and de-
pending from the under face of the turret. In the backward movement of the
slide, however, the pin J6 engages with the tooth K of the dog K, and positively
rotates the disk, which through the medium of its pawl J2 positively rotates the
turret through the operating-ring J. At the same time the backward movement
of the slide compresses the spring J³, one end of which is secured to it, as before
described, whereby the spring is compressed preparatory to its work of rotating
the disk for the purpose of engaging the pawl thereof with a new notch in the
ring J2 during the next forward movement of the slide and turret.
It is necessary that at the time the turret is doing its work it should be held
solidly, for upon the solidity with which it is held while it is performing its work
depends the accuracy thereof. It is also necessary that the turret shall be loose
part of the time, so that it may be positively rotated step by step. For frictionally
binding the turret a rod L is employed, which passes down through the large,
turret-stud H. The upper end of this rod is threaded for the application to it of a
cup-shaped binding-nut L', and a check-nut L2, which secures the binding-nut
upon the binding-rod when it has once been set in the desired position thereupon.
The binding-nut L' bears at its lower edge upon a large, flat, binding-washer L³,
resting upon the upper face of the turret H. The interior of the binding-nut
is screw-threaded for the reception of the screw-threaded stem formed at the
upper end of the turret-stud H₁. In view of this construction, when the binding-
rod L is turned in one direction, the binding-nut L' is turned with it, and slightly
lifted above the binding-washer L3, which then ceases to bind down upon the
turret H, permitting the same to be rotated practically without resistance. On
the other hand, when the binding-rod L is turned in the opposite direction, the
nut L is turned with it, and forced down upon the washer L³, which is thrust
down upon the turret so as to hold the same solid against rotation to any degree
in either direction. The rotation of the binding-rod in one direction or the other
as described, is effected by means of mechanism located at its lower end, and upon
the under face of the slide I. The lower end of the said rod projects below the lower
end of the turret-stud H¹, and has an operating-head M rigidly secured to it by
means of a set screw m, the said head entering a large opening Ib formed for its
reception in the slide I. The said head is chambered for the reception of a dog M,
and a spring M², which exerts a constant effort to throw the dog outward.
pin m mounted in the dog M¹ limits the play of the dog by entering a slot m²
formed in the head M, as clearly shown by Fig. 9. The projecting outer end of
the dog is formed with a beveled-face m³, and co-acts with a pin N and a flat plate-
like stud N¹, which project upward from the upper face of the slide-holder I.
The said head has pivotally connected with it a spring guide-rod 0, which is
encircled by a spring O', located in a chamber 02 formed in the slide-holder, the
outer end of the said chamber being enlarged for the reception of a nut 03, by
means of which the compression of the spring () is regulated. The extreme outer
end of the guide-rod O plays back and forth through the nut.
The mechanism above described operates as follows:-
A
When the slide is moving forward and carrying the turret to its work, the same
is held solidly against any rotation whatever by the binding action of the binding-
rod L, which is held in position for forcing the binding-nut L' down upon the
binding-washer L3 by the action of the spring O' against the head M, rigidly
connected with the lower end of the rod.

page_text: Figure 9 shows the position of the head at the commencement of the forward
movement in the direction of the arrow. As the slide moves forward, the head
will gradually swing around into the position in which it is shown in Figure 9.
The head then passes into an inclined position under the action of the spring O¹,
and assumes the position shown in Figure 9"; the dog being forced inward against
the action of its spring by engaging with the adjacent face of the stud N. As
the slide continues its outward movement the dog snaps over the stud N1 and the
head reaches the limit of its extreme forward movement in the position in which
it is shown in Figure 9. Then after the slide has begun its rearward excursion,
during which it loosens the turret for the rotation of the same, the
dog will engage with the adjacent end of the stud N', whereby the
head will be swung around into the position shown in Figure 9º in
which position the dog will be dragged over the stud N1, and finally snapped off into
engagement with the pin N, with which the dog will continue in engagement
the binding rod being thus turned so that the binding nut L' is lifted, and the
binding action of the binding-washer for the time suspended or relieved. When
in the backward movement of the slide, the dog M¹ snaps off from the stud Nit
engages with the pin N, as shown in Figure 9. It will thus be seen that by
means of the mechanism described, that soon after the slide begins its forward
movement with the turret, the binding-rod acts to solidly bind the turret upon
the slide and so hold it until after the turret has performed its work, and that
almost immediately after the beginning of the rearward movement of the slide
with the turret, the binding-rod is operated so as to loosen the turret and permit
it to be rotated to bring another tool into play.
The next feature of the invention to be described is the means employed for
positively locking the turret against rotation in either direction at the time it is
doing its work.
For this purpose a locking-bar P is employed, which is located in a long groove Pi
formed for its reception in the upper face of the slide I. The extreme forward
end of the bar is beveled to adapt it to readily enter the beveled locking-notches J¹
formed in the operating-ring J, secured to and depending from the turret H, the
rotation of which as provided for, successively brings the notches J' in the ring
into alignment with the beveled forward end of the bar, which is forced forward
independently of the movement of the slide so as to enter the notches, and posi-
tively lock the turret against rotation in either direction, the locking of the turret
being also effected by means of the friction device already described. In order
to provide for taking up the wear of the forward end of the bar and the side walls
of the slot P', the forward end of the slide is formed with two longitudinal cuts P³
P3, whereby two slightly flexible arms P P are produced, these arms containing
the forward ends of the side walls of the groove P. For setting these arms inward
to take up the wear of the bar or walls, two take-up screws P P are employed,
transversely arranged with respect to the slide, and located opposite each other in
line, and impinging against the outer faces of the said yielding arms at points near
the forward ends thereof. When these screws are turned inward, the arms are
sprung sufficient to take up any wear which may occur between the bars and side
walls of the slot. These screws may also be employed to re-align up the machine,
as it were, for if more wear takes place on one side than on the other, the screws
may be respectively adjusted so as to virtually shift the position of the forward
end of the bar enough to restore the machine to alignment.
The slide itself is operated back and forth by means of a heavy depending-pin P,
provided with an anti-friction roller P7, which co-acts with suitably arranged
cams Ps, adjustably mounted upon the cam-drum P³, which is keyed to the shaft G
before mentioned as being the shaft upon which the worm-gear G2 is mounted.
The next feature of the invention to be described is the mechanism employed
for reciprocating the locking-har P. This mechanism comprises a knuckle-lever Q,
hung upon a horizontal pin Q', the ends of which are supported in the arms Q², Q³

page_text: of a bracket Q3, which is firmly secured to the lower face of the slide I by means
of a screw q, and a dowelpin q, passing through holes 2 g formed in the bracket.
The upper end of the said lever has a knuckle like enlargement 7', and enters a
socket formed to receive it in the lower face of the bar, the said upper end
of the lever passing through a vertically arranged clearance opening q formed in
the slide, as clearly shown in Fig. 6. The said lever is operated by means of
a chambered pawl I, suspended from the horizontal pin Q1 before mentioned, and
located between the two arms Q2 Q2 of the bracket Q3, The said lever Q is
itself inserted into the upper end of the chambered pawl, and extends downward
thereinto below the pin Q, its lower end being formed with a beveled face Q+
which co-acts with an oppositely beveled surface R', formed within the lower
end of the pawl, the extreme lower end of which is constructed with a rearwardly
facing tooth R. A pin r carried by the pawl R is provided for the attachment
of the rear end of a pawl-spring R³, the forward end of which is attached to a
pin r, depending from the slide. The function of this spring is to exert a con-
stant effort to pull the chambered pawl R forward, and keep its beveled face R¹ in
contact with the beveled face Q of the pawl. The tooth R² of the pawl co-acts
with the forward end of an adjustable, horizontally arranged, operating-block S,
which is mounted in the slide-holder I¹ at a point directly under the lever Q and
chambered pawl R, the said block being formed with a threaded stem S¹, receiving
an adjusting-nut S2, and a check-nut S3, the said nuts S2 S3 being located in a
horizontally arranged threaded recess St formed to receive them in the rear end
of the slide-holder. When the slide moves forward, the rounded forward edge of
the tooth R2 of the pawl R, engages with the steps of the operating-block, and
trails and snaps over the same, the pawl at the same time swinging on the pin Q'
and the spring R³ being stretched. When the tooth of the said pawl snaps over
- the steps of the block S, the tooth is in position to be engaged with the forward
edge of the said step. When now the slide makes its rearward movement, the tooth
docs engage with the forward edge of the step, whereby the pawl is positively
turned on its pivot, its beveled face R' then co-acting with the beveled face Q
of the lever Q, so as to swing the upper end of the lever rearward, and thus move
the bar rearward, and its forward end out of that one of the notches J'.of the
ring J, in which it has been inserted. This rearward movement of the bar is
effected against the tension of a spring T, which is employed for pushing the bar
forward, the said spring being supported upon a guide-rod T¹, the forward end of
which is entered into the rear end of the bar, and the rear end of which is formed
with a head T2 which is engaged by an adjustable headless tension-screw T³, which
is located in a threaded socket, formed for its reception in the extreme rear end of
the slide. It will be seen that the lever Q and chambered pawl R are employed
for retracting the locking bar against the tension of the spring T, which is utilized
for pushing the locking bar forward, at which time it swings the lever Q forward
and the pawl R rearward against the tension of the pawl spring R³.
If desired an auxiliary tool-carriage U may be employed, mounted in a bracket U¹
bolted to the extreme rear end of the slide-holder. The said tool-carriage is
operated back and forth by means of a depending pin U2, co-acting with an
auxiliary cam U3 mounted upon the extreme rear end of the shaft G³. The tool-
carriage is provided with a suitable tool-chuck a mounted upon a shaft u', which is
actuated by means of a pulley U+, shown in Figs. 6 and 7. It is designed that
the device last described shall be arranged and timed so that it will perform some
cutting operations upon the opposite end of the work from the end which was cut
and formed by the other cutting instrumentalities of the machine. Thus, just
as the work is being cut off in the ordinary manner, it might be taken by a work-
holder Us carried by the turret, and then presented to the action of a tool carried
by the chuck u.
The next feature of the invention consists of a box-tool comprising a box, having
a body-portion 15, a top-plate or cover 16 therefor, and a long, horizontally arranged

page_text: stem 17, by means of which the box is mounted in the turret H of the machine,
and adjustably held therein in the manner before described. The said box is
adapted to receive a vertically movable tool-holder, comprising a head 18, having
a horizontal opening 19, and a stem 20 which extends upwardly into the body-
portion of the box. The cutter 21, whatever may be its shape in cross-section,
is inserted into the opening 19 aforesaid, in which it is longitudinally adjustable, and
in which it is held in any desired position of adjustment by means of a set-
screw 22. It may be remarked that the cutting-tool is uniform in cross-section
throughout its length, its cross-sectional form being determined by the character
of the work that it is designed that it shall do. By constructing and mounting
the cutter as shown, its work is performed by its forward end instead of by its
side, so that as the tool wears, its forward end can be ground, which will shorten
the cutter in length, but which will not affect its cross-sectional form, so that so
far as its cutting action is concerned, it will remain the same size as long as it
lasts. The upper end of the stem 20 of the tool-holder is formed with a threaded
bore 23, for the reception of an adjusting screw 24, which is formed with an
annular shoulder 25, adapted to be received in a shallow circular recess 26, formed
in the lower face of the top-plate or cover 16, which is secured to the box-body 15
by means of screws 27 27, as shown in Fig. 33. The upper end of the said screw
is reduced to form a stem 28, and a shoulder 29, the latter being flush with the
upper face of the box-cover 16. A pinion 30 having a central transverse perfora-
tion 31, is thereby adapted to be set down over the stem 28 of the screw, so as to
rest upon the shoulder 29 thereof, the pinion being rigidly connected with the screw
by means of a nut 32 applied to the threaded upper end of the stem 28, and forcing
the pinion down into hard contact with the shoulder 29, so that the screw partakes
of any rotation of the pinion in either direction. It is obvious that by turning
the pinion 30 in one direction or the other, the tool-holder will be raised or
lowered, with the effect of correspondingly raising or lowering the tool with respect
to the work which is held in and rotated by the chuck D' of the machine, the said
chuck being mounted in the head 33 of the machine. The work extends through
a bushing 34, which is mounted in the front wall of the box-body 15, as shown
by broken lines in Fig. 32 which also shows the provision of the machine with a
vertically movable sizing-cutter 35. which is contained in a small housing 36,
located upon the front wall of the box-body 15. One side wall of the said box-body
is cut away and replaced by a removable plate 37, held in place by screws 38 38,
and removed for the insertion and removal of the tool-holder into and from the
box-body.
By employing a cutter of uniform cross-section throughout its length, and
arranging it horizontally so as to employ its forward end for cutting, and mounting
it so as to raise it and lower it at pleasure, either large or small work may be
turned as desired, without changing the cutter, and also the cutter may be used
as long as it lasts by simply grinding its forward end, which does not change
its cross-section or shape as a cutter. Now to adapt the tool to
do tapered cutting. or combination straight and tapered cutting, it is
provided with the pinion 30 already described, and for action with this pinion
it is furnished with a horizontally adjustable rack 39, which is attached by means
of a screw 40 to a clamping-head 41, adapted to be clamped by a horizontal screw 42
upon a horizontal arm 43, which projects from the head 33 of the machine. The
point in the operation of the box-tool when its pinion engages with the rack so
as to be turned thereby, determines the character of the work. Thus, if it is
desired to begin cutting the article being cut on a taper at once, the rack is set
so that as soon as the machine starts, it will be engaged by the pinion of the box-
tool, which will be rotated with the immediate effect of raising or lowering the
cutter according as the screw 24 is made with left or right hand threads. On the
other hand, if it is desired that the article being shaped should have a cylindrical
end, then the rack is set so that it will not be engaged by the pinion F of the box-
tool until after the tool has operated to form such end, after which the pinion will

page_text: be engaged with the rack, which will then operate the cutter for forming the
required taper. If it is desired that the article being cut shall be uniform through-
out its length, the rack 39 is simply pushed out of the way, so that it does not
engage with the pinion of the box-tool in any position thereof. It will be clear
that the pitch of the taper produced by the tool will depend on the rapidity with
which the tool-holder is raised and lowered, and that that will depend upon the
number of teeth in the wheel 30. Therefore, in order to change the pitch of
tapered work each box-tool is preferably provided with a set of wheels, differen-
tiated as to the number of their teeth, "and designed to be used interchangeably
with the box-tool according to the pitch of taper required.
Although forming no part of the present invention, reference may be made to
the large cam-wheel 2, furnished upon its outer periphery with cams 3, which
co-act with a sliding feed-clutch 4 by means of which the stock in the form of a
rod is fed forward intermittently through the hollow shaft D into the chuck D',
and with a sliding collar-block 5, the beveled collar of which co-acts with jaws
mounted in a head 7 the said collar and jaws operating to open and close the chuck.
A cam-disk 9 is also located upon the shaft G3, which is provided with a cam 10,
co-acting with the lower end of a pivotally hung, vertically arranged operating-
lever 11, the upper end of which is connected with and operates the transversely
sliding block 12 which carries the cutting-off tool 13 and the shaping-tool 14, as
shown in Fig. 2.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is: -
1. In a lathe, the combination with a work-holding chuck, of a clutch-mechanism
by means of which the work-holding chuck is reversed in the direction of its
rotation, cutting-tools, a speed-regulating mechanism for varying the speed with
which the cutting-tools are advanced toward and retired from the said work-
holding chuck, and a single disk provided with reversing cams and speed cams
respectively arranged to co-act with the reversing mechanism and the speed-
regulating mechanism for operating the same.
2. In a lathe, the combination with a work-holding chuck, of a clutch-mechanism by
means of which the work-holding chuck is reversed in the direction of its rotation,
the said clutch-mechanism including a clutch-lever; cutting tools, a speed-regu-
lating mechanism for varying the speed with which the cutting-tools are advanced
toward and retired from the said work-holding chuck, including a belt-shifting
lever a cam-disk, and reversing cams and speed-cams mounted in the said disc
and respectively co-acting with the said clutch-lever and the said belt-shifting
lever for the operation of the said clutch-mechanism and the said speed-regulating
mechanism.
3. In the speed-regulating mechanism of a lathe, the combination with a worm-
gear, of a worm located below the same, a hollow shaft upon which the worm is
located, a shaft passing through the said hollow shaft, slow and fast pulleys
mounted upon the adjacent ends of the hollow and enclosed shafts respectively,
and the elements of a planet motion mechanism connected with the opposite ends
of the shafts, whereby the worm-gear is driven fast or slow according as the power
belt runs upon the slow or fast pulley.
4. In a lathe, the combination with a worm-gear, of a worm located below and
meshing into the same, a tubular shaft carrying the said worm, a shaft passing
through the tubular shaft, a slow pulley keyed to one end of the tubular shaft,
a fast pulley keyed to the projecting adjacent end of the enclosed shaft, a cup
keyed to the projecting opposite end of the enclosed shaft, a pinion located
within the said cup and mounted upon a stud located near the edge thereof, two
gear-wheels located substantially within the said cup, corresponding to each other
in size, differentiated in the number of their teeth, and both meshed into by the
said pinion, the wheel having the fewest teeth being keyed to the adjacent end of

page_text: the tubular shaft, and the wheel having the larger number of teeth being loosely
mounted upon the said end of the said shaft, a ratchet connected with the gear-
wheel last mentioned, and a pawl co-acting with said ratchet, whereby when the
power-belt runs upon the slow pulley the gear-wheel into which the worm meshes
will be driven at a comparatively high speed, while when the power belt is shifted
to the fast pulley the speed of the said gear-wheel will be reduced by the operation
of the cup, the pinion, the differentiated gear-wheels, the ratchet-wheel and the
pawl.
5. In a lathe, the combination with a slide-holder, of a slide mounted therein,
a turret mounted upon the slide, an operating-ring rigidly secured to and depending
from the turret, an operating-disk carried by the slide but located within the said
ring, a pawl carried by the said disk, and co-acting with notches formed in the
said ring, an operating spring located within the disk and oscillating the same
for successively engaging the pawl with the notches in the ring, an operating-pin
depending from the disk, and a dog mounted in the slide holder and co-acting
with the disc for positively rotating the turret in the backward movement of the
slide, and at the same time compressing the spring which acts in the forward
movement of the slide to oscillate the disk, substantially as described.
6. In a lathe, the combination with a slide-holder, of a slide mounted therein,
a turret mounted upon the slide, a turret stud secured to the said slide and passing
downward through the turret which turns upon it, a binding-rod passing downward
through the said turret-stud, means connected with the binding-rod for exerting
downward pressure on the turret for clamping it upon the slide, and means com-
bined with the lower end of the rod for turning the same to apply or release the
binding-means.
7. In a lathe the combination with a slide-holder, of a slide mounted therein, a
turret mounted upon the slide, a turret-stud passing downward through the turret
into the slide with which it is connected, a binding-rod passing downward through
the said stud, a binding-nut applied to the upper end of the binding-rod and
exerting a downward pressure upon the turret for clamping the same against rota-
tion, an operating-head secured to the lower end of the rod, a spring co-acting with
the said head for turning the rod in one direction, and a yielding dog mounted in
the said head, and operating to turn the rod in the opposite direction during the
rearward movement of the slide.
8. In a lathe, the combination with a slide-holder, of a slide mounted therein,
a turret mounted on the slide, a turret stud passing downward through the turret
and connected with the slide, a binding-rod passing downward through the turret-
stud, a binding-nut applied to the upper end of the binding-rod, and adapted to
exert downward pressure upon the turret, an operating-head secured to the lower
end of the said rod, a spring co-acting with the said head so as to turn the rod in
one direction and bring the clamping-nut at its upper end into operation, a yielding
dog also mounted in the said head, and forced out of action during the forward
movement of the slide, and a stud mounted in the slide holder, and co-acting with
the said yielding-dog which operates to turn the binding-rod in the opposite
direction during the backward movement of the slide for taking off the clamping
action of the binding-nut at the upper end of the rod.
9. In a lathe, the combination with the slide-holder, the slide and the turret
thereof, of a reciprocating bar for positively locking the turret, means for actuating
the said bar, and means for taking up the wear of the bar and restoring the align-
ment of the machine by shifting the forward end of the bar.
10. In a lathe, the combination with a slide-holder, of a slide mounted therein
and formed with a long groove and with two integral yielding arms forming the
forward portions of the side walls of the said groove, a locking-bar located in the
said groove and co-acting with the turret to positively lock the same against rota-
tion in either direction, means for reciprocating the slide, and adjusting-screws
co-acting with the said integral yielding arms for taking up wear and for restoring
the alignment of the machine by shifting the forward end of the bar.

page_text: 11. In a turret-lathe, the combination with a slide-holder, of a slide, a turret
mounted upon the slide, a bracket secured to the rear end of the slide, a tool-
carriage mounted in the said bracket, a tool-holder carried by the said carriage,
and means for operating the said tool-holder, whereby work presented to the said
cutter by the turret is cut on the opposite end from the end cut by the tools
carried by the turret.
12. In a lathe, the combination with the bed thereof, of a worm-gear located
below the same, a worm situated below the said worm-gear, a hollow shaft upon
which the worm is located, a shaft passing through the said hollow shaft, slow and
fast pulleys mounted upon the adjacent ends of the hollow and enclosed shafts
respectively, planet-motion mechanism connected with the opposite ends of the
shafts, whereby the worm-gear is driven fast or slow according as the power-belt
runs upon the slow or fast pulley, and an oil-box located below the worm-gear
and between the fast and slow pulleys and the planet motion mechanism, and con-
taining the said hollow shaft and therefore the worm, which is more or less sub-
merged in the oil within the box.
13. A box-tool having a box, a tool-holder located therein and comprising an
upwardly extending stem, a horizontally arranged head containing a horizontal
opening for the reception of the tool which is held so as to cut by its forward end,
and means for raising and lowering the said tool-holder by means of its upwardly
projecting stem.
14. A box-tool having a box, a tool-holder located therein and comprising an
upwardly extending stem, a horizontally arranged head containing a horizontal
opening for the reception of the tool which is held so as to cut by its forward end,
and a screw entering the upper end of the stem and projecting above the box, and
providing for raising and lowering the tool-holder as desired.
15. A box-tool having a vertically movable tool-holder and means for raising
and lowering the same including a wheel located above and connected with it
and exposed for being engaged by an independently supported rack by means of
which the wheel is turned in one direction or the other for raising and lowering
the tool-holder as the work progresses, so as to change the character of the cut.
16. In a screw-machine or lathe, the combination with a box-tool having a
vertically movable tool-holder, and a wheel connected with the said holder for
raising and lowering the same; of an adjustable horizontally arranged rack located
in position to be engaged by the said wheel which it actuates in rotation in one
direction or the other as the machine operates, substantially as set forth.
Dated this 12th day of February 1898
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.