Improvements in Turret Lathes.
Year: 1899

page_text: Date of Application, 27th Dec., 1899-Accepted, 8th Dec., 1900
[Communicated from abroad by CONRAD MARTINIUS CONRADSON, of S.W. Corner
Water and Orange Streets, Wilmington, New Castle County Delaware, United
States of America, Gentleman].
Improvements in Turret Lathes.
T, 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:-
The invention relates to turret lathes and comprises:-
First, means for rapidly transversing the turret backward and forward on the.
bed by power.
Second, a hand adjustment working in connection with the power traverse, for
adjusting the turret over small distances.
Third, providing means for rotating the turret by power.
Fourth, providing means for automatically registering the turret by power.
Fifth, providing power devices for automatically clamping the turret.
Sixth, providing the main turret with a supplemental turret or tool post,
mounted so as to traverse at right angles to the axis when the turret is in opera-
tire position.
Seventh, providing said supplemental turret or tool post with power cross
feed devices.
Eighth, inclining the supplemental turret or tool post for the purpose set
forth.
Ninth, providing feed stop devices for stopping the feed at any point of the
traverse of the turret and having independent adjustments for each tool in the
turret.
Tenth, providing rapid and convenient means for varying the feed of the
turret as well as for reversing its travel.
Eleventh, providing means for driving the work at greatly varying speeds.
The features of the invention are more fully set forth in the description of
the accompanying drawings making a part of this specification, in which :-
Figure 1, is a perspective view of the turret lathe.
Fig. 2, is a front end elevation.
Fig. 3, is a section on line y, y, Fig. 2.
Fig. 4, is a plan view of the main and supplemental turrets.
Fig. 5, is a central vertical section through the spindle and back gear shaft.
Fig. 6, is a side elevation of the turret and apron, showing sections of various
parts.
Fig. 7, is a vertical section through the supplementary turret and its feed shaft.
Fig. 8, is a sectional view of the bevel reversing gears and spiral rotating gear.
Fig. 9, is an end view of the turret rotating crank, showing turret clamp cam.
Fig. 10, is a plan view of turret rotating lever.
Fig. 11, is a transverse vertical central section of the turret and turret apron.
Price 84.1

page_text: Fig. 12, shows a detail of the turret feed reversing mechanism.
Fig. 13, is an end view of the fixed member of the turret rotating clutch.
Fig. 14, is an end view of the turret rotating clutch and cam.actuating locking
pin.
Fig. 15, is a plan view of the turret clamping mechanism.
Fig. 16, is a detail of the right and left hand clamp actuating screw.
Fig. 17, is a longitudinal central section and partial elevation of an automatic
independently adjustable longitudinal feed stop mechanism.
Fig. 18, is a vertical central section through the feed change gears.
Fig. 19, is a detail view showing the turret feed actuating mechanism, longi-
tudinal feed clutch and spiral gears for actuating transverse feed of auxiliary
turret tool post.
Fig. 20, is a perspective view of change gear actuating slide bar.
Fig. 21, is a section through the change gear key.
Fig. 22, is a perspective view of change gear key.
Fig. 23, is a detail showing turret traversing lever and its gear connection to
turret traversing spindle rod.
Fig. 24, is a section through belt shifting gear.
Fig. 25, is a cross section through double ended tooth clutch 63, transmitting
collar 62 and back gear shaft B¹.
Fig. 26, is a detail view of the automatic brake setting and releasing mechanism.
Fig. 27, is a detail sectional view of the tool feeding revoluble nut on the
screw feed shaft.
Fig. 28, is a detail perspective view of the automatic turret feed stop and
reversing mechanism.
Figs. 29 and 30 are detail views similar to Fig. 6, showing the turret releasing
and revolving mechanism in different positions.
Fig. 31, is a longitudinal elevation, partly in section of a single shaft with
two sets of driving devices for obtaining slow and fast speeds.
Fig. 32, is an end elevation of Fig. 31.
Fig. 33, is a cross section of the frame, traverse shaft and gear of Fig. 31.
Fig. 34, is a longitudinal section of the lead screw nut, shown in Fig. 31.
This lathe is adapted to do heavy work not usually performed by turret lathes
and its features of construction have peculiar reference to new work which is
desired to be performed.
The mechanism for driving the spindle at varying speeds is constructed as
follows:-
Referring to Figure 5, A, is the bed or main frame of the machine, supporting
at one end the work carrying spindle B in suitable journals and provided with
proper means for taking up wear. On the spindle nose is firmly fixed, by thread-
ing or otherwise, the chuck or face-plate C, having a gear on its periphery engaging
with pinion C, which is driven by the back gear shaft B', on which it is feathered
and so arranged as to permit its being slid out of mesh with the gear on the out-
side of the chuck. The driving cone pulley A has fixed to it at either end,
pinions a and a¹, and runs loosely on spindle B.
The back gear shaft B₁ is preferably arranged directly beneath the spindle B
and carries loosely mounted on it a sleeve B2, which in turn supports the gear
wheels 66 and 6. These gears are provided with conical friction surfaces adapted
to engage with the fixed clutch members 67 and 68. 65 and 66 are each provided
with bell crank cluth levers C₁ pivotted in arms C2 which re-act against loose
collars C✶✶ which in turn bear against the adjustable threaded collars, C.
Midway between the clutch levers C¹ is a double conical clutch collar C3, which
when thrown in either direction elevates the levers C' and causes the conical
friction surface to become engaged, thereby transmitting motion to the loose
sleeve B2. Suitable springs are provided for disengaging the friction surface
when the clutch collar C3 is withdrawn.
Clutch collar C³ is actuated by means of crank lever , fixed to shaft 6, which

page_text: is journaled in the sides of the main frame. On the projecting end of shaft 617
is fixed the hand actuating lever 618, Fig. 1, by means of which the clutches are
controlled.
Sleeve 132 carries at one end pinion or gear b¹, meshing with gear a³, which is
firmly fixed to sleeve a³ of the gear a which is loosely journaled on main
spindle B. Gear a engages with gear b, which is loosely journaled on back gear
shaft B. A series of clutch teeth are cut on the side face of gear 61 and also
on the hub of gear b. Between the gear 1 and gear 6 is located the double
ended clutch 63, having clutch teeth adapted to engage with teeth cut in gear bl
and in gear b, said clutch being operated by means of the external arm C24 on
shaft 64
Interposed between the sleeve B2 and the gear 6 is the collar 62, Fig. 25 which
is feathered to back gear shaft B. Double ended clutch ring 63 is in turn
feathered to collar b².
C³ represents a bushing splined to sleeve C* and adapted to be actuated by
crank lever C19, which engages in a slot cut in its lower side. Crank lever Ci⁹
is firmly fixed to shaft C, which is journaled in the sides of the bed.
Shaft C also carries the lever 07, whose end C8 is adapted to engage in the
curved slot in the lower end of lever C9. C also carries the external hand
actuating lever C20 Fig. 1. The function of this lever is to withdraw the gear C
from engagement with the gear cut in the periphery of the chuck C.
a represents a double ended tooth clutch splined to the work-carrying spindle B,
and adapted to engage with corresponding clutch teeth cut in the opposing faces
of gear a and a Double ended clutch ring as is actuated by the crank lever C,
which is firmly fixed to shaft a, supported in the side walls of the main frame,
and carrying the external hand actuating lever C22 Fig. 1. Shaft also carries
firmly fixed to it the interlocking lever C, arranged to interlock with lever C.
For a given speed of the driving cone pulley A¹ it is possible to obtain:-
First, a direct belt speed employing no gearing.
Second, two quadruple gear speeds and four double gear speeds, making seven
speeds in all.
These speeds are obtained as follows:-
In order to obtain the slowest speed the following combination must be made.
Clutch a must be in central position, gear C must be in mesh with gear on
chuck C, clutch ring must be engaged with gear b, clutch collar C³ must be
thrown to the left, clutching gear 66 to loose back gear sleeve B2. Gear b¹ drives
gear a, which in turn drives a and b. b being clutched to back gear shaft B',
drives it and in turn C and chuck C. In this case there are four gear reductions.
To obtain the next higher speed, the friction actuating collar C3 is thrown to
the right, thereby obtaining a somewhat higher speed.
To obtain the next higher speed, friction clutch collar C³ is thrown to the left
and tooth clutch 63 is also thrown to the left, being actuated by crank lever (2³,
fixed to shaft 4, supported in the side walls of the main frame and carrying the
external hand actuating lever C24. 13 engaging with b takes up its motion and
transmits it directly to back gear shaft B', eliminating the effect of the reducing
wheels a, a, b and b which run idly.
The next higher speed is obtained by throwing the friction clutch C³ to the
right.
To obtain the next increase in speed, it becomes necessary to withdraw the
driving pinion C+ from the face plate C. This is accomplished by throwing the
external band actuating lever (20 to the left as far as it will go. This causes
the end C8 of the interlocking lever C to be withdrawn from the circular slot
in interlocking lever C and to take up the position shown by the dotted lines in
Figure 5. It will now be obviously possible to move the double ended clutch
ring a in either direction. In order to obtain the speed desired, it is necessary
to engage clutch ring a6 with sleeve a³ or gear a when it is possible to obtain
two more double gear speeds, due to the two positions of C. It will be noticed

page_text: that when the gear.04 is withdrawn and lever C7 takes up the dotted position,
that gear C is locked by a movement of interlocking guide 09 in either direction,.
so that it is impossible to engage the gears in such a manner as to cause breakage.
If now hand actuating lever C is thrown to the left, it will cause double clutch
ring a to engage with a thereby transmitting the motion of driving cone
pulley A directly to the work-carrying spindle B and giving the highest speed.
Motion is transmitted to the feed-shaft or work-shaft operated direct from the
lathe spindle as follows:-
D Fig. 5 represents a gear rigidly mounted upon the main spindle B and
transmitting motion to gears D1, D2, D3 and D Figs. 1, 2, 3 and 5 with a gear 15
on a sleeve D upon the traversing screw-shaft 17. 18 represents a gear loosely
mounted on a work-shaft 19. d, represent loose belt pulleys journaled on the
shaft D. represents driving pulley keyed to said shaft so that the same may.
be driven in either direction by means of a straight belt and a cross belt having
appropriate shifting mechanism to be hereinafter explained.
Connected to the hub of the pulley d is a gear d³ meshing with a gear & loose
on shaft D⁹. d represents a clutch splined to the shaft D and normally in en-
gagement with the gear D8, but capable of being thrown into an intermediate
position or into engagement with gear d'.
Shaft D is employed usually for moving the carriage forward and backward
rapidly. It is driven by means of the pulley 2, two loose pulleys d, d' are em-
ployed, upon one of which normally runs a straight belt and upon the other d
a cross belt. These belts respectively run through an eye at each end of a shifting
rode. This rod is mounted upon a longitudinal moving rod or shaft which
is moved forward and back by the lever e¹. When this lever el is in the central
position, the driving belts are respectively on the loose pulleys and shaft_D7
is idle. To prevent accidental motion, a brake-shoe e is automatically applied
to the rim of the driving pulley d. The mechanism for shifting these belts is
as follows:
E represents a belt shifting shaft which is thrown through a partial revolution
by means of a hand lever E¹ on the apron of the carriage, (see Figs. 1, 23 and 24.
Hand lever E partially rotates the gear E. E represents a gear meshing with
gear E, journaled in a boss E in the apron and splined to the belt shifting shaft E,
allowing the belt to be shifted by hand, it is also shifted automatically as will
be hereinafter explained.
A partial rotation of the shaft E in one direction brings the cross-belt on the
pulley and a partial rotation in the opposite direction brings the straight
belt onto the pulley through the following mechanism.
e represents a cam mounted on the shifting shaft E having the slot e¹0 engaging
with a lever el (see Fig. 1) which in turn throws the belt shifting rod e² to shift
the belt backward or forward. Secured to the end of the belt shifting shaft E is
a came (see Figs. 2, 3, and 26) which engages a lever et connected to a sleeve &",
journaled on a stud shaft and carrying a brake-shoe e, which is brought into
engagement with rim of pulley when the lever E¹ is in a central position to
lock the said pulley and its shaft D7 against rotation. This shaft D is used to
rapidly move the carriage or turret to and from the work. It is only used inter-
mittently. It is thus held stationary except when it is brought into operation by
belt shifter shaft which unlocks the brake when the reversing shaft is revolved.
This shifting shaft can also be automatically tripped at the limit of the apron
travel by means of collar or topper e coming in contact with the rear end of the
gear E which shifts the shaft E endwise and thereby throws the levere to shift
the belt. This endwise movement in turn acts upon the crank-arm and through
connecting rod throws the clutch d³.
The shafts D, D are employed interchangably in feeding the turret and
apron in the following manner.
A³ represents ways on the frame A on which the turret travels. The rear end
of the shaft D is screw-threaded and receives an internally screw-threaded nut F,

page_text: Figs. 6 and 27 journaled in a lug projecting from the apron G, attached to the
turret carriage or slide.
represents a worm wheel cut upon one end of the nut F. By this means
the nut may be held stationary by the worm wheel and worm 2 Fig. 19 on the
shaft and the apron and carriage driven by turning the screw shaft 17 or the
screw shaft D' may be locked into a stationary position and the nut F rotated
to feed the apron along the screw shaft by means of transmitting bevel gears F3, F4,
Fig. 6 mounted on the work shaft D and the gear F9 mounted on shaft f which
is journaled to the apron. D is the work feed shaft and is ordinarily driven in
ratios relative with the main lathe spindle B through the gear D8 as heretofore
explained. This work-shaft D controlls the main feeds of the lathe through the
bevel gear mounted thereon, and as it is necessary to feed forward and backward,
reversing gears are provided. Motion through shaft D to feed the turret slide
forward is obtained by driving the nut F on shaft D. The brake e of course
being applied upon the driving pulley, holding the shaft 17 from rotation.
The main turret is also rotated by power obtained from the work-shaft D⁹, and
these motions are obtained by the following mechanisms.
F3 Figs. 6 and 8 represents a sleeve splined upon the shaft D and carrying the
miter gears F3, F. This sleeve is shifted to reverse motion by means of a star
lever F, which carries an eccentric pin F6 (see Fig. 12) which in turn shifts the
rock-shaft F7 by means of a slotted rock-armi F8 and eccentric-pin F to throw the
sleeve F. This brings either one or other of the gears F3, F4 into engagement
with miter gear F on the shaft f.
If it is desirable to use a change of speed for feeding the turret carriage, this
is obtained by a series of interchangeable gears mounted upon shafts preferably
journaled in the apron. f, H represent such shafts.
Mounted on the shaft f within the apron are a series of spur-gears f¹, f², f³, f
(see Fig. 18). f³, f6, 7, 8 represent a series of gears loosely mounted upon
shaft H. represents a series of dogs mounted in recesses of the shaft II
and strung upon a shifting bar H¹, seated in slot in shaft H. H² represents a
sleeve sliding on the outer end of the shaft H, adapted to be shifted thereon by
means of a lever H³ Figs. 1, 3 and 18, the sleeve H2 is in engagement with the lug
on the end of the shifting bar H¹ to shift the bar endwise in its slot in the shaft H.
H Figs. 18 and 20 represents a series of notches in the edge of the shifting
bar into which the tapered lugs H5 of the dogs fo Figs. 21 and 22 are adapted to
drop, whereby the dog is permitted to spring forward and enter a recess in the
hub of the respective gears f³, fo, f and f. Each of which is provided with a
dog and engaging with a corresponding notch in the shifting bar H. The
arrangement of these notches being such that only one dog can be in engagement
with its corresponding gear at any time thus either one of the series of change
gears f to f may be coupled to shaft H if desired.
i represents springs for throwing the dogs finto engagement with the re-
spective gears.
He represents a gear keyed on the shaft H, Figs. 1 and 18 meshing with a
gear H on the sleeve H journaled in the apron and clutched to the transmitting
shaft I. Sleeve H8 carries a spiral gear H driving a spiral gear h on the shaft /
Fig. 6, and also shown in dotted lines Figure 19.
h2 represents a worm on the shaft I, meshing with the worm F of the feed
nut F. 3 represents a hand wheel keyed to the shaft I by means of which the
turret may be fed by hand if desired. represents a friction clutch splined
to the shaft I and adapted to clutch the gear H7 to the shaft I. This clutch is
engaged and disengaged with gear H by means of a kuurl-nut h5. The stem ho
of which carries a pin h* which serves to shift the clutch h into or out of engage-
n.ent with the gear H7.
The supplemental turret G¹ is provided with feeding mechanism, preferably
screw-shaft and motion is imparted to this shaft by the following devices..
(See Figs. 6 and 7).

page_text: The upper end of the shaft is provided with a clutch member h engaging
clutch member 8 which in turn through gear drives the feed screw g¹ of the
supplemental turret G¹.
represents a hand lever for shifting the clutch member into or out of
engagement with the clutch member 8.
The suppplemental turret is fed laterally across the ways formed on the face
of the main turret J. The supplemental turret is set at an angle or mounted
in an inclined way so that the tools projecting therefrom will not interfere with
the tools carried by the sockets of the main turret. This supplemental turret
is capable of revolution by hand and is provided with a centering pin G2, which
may be thrown out of engagement by hand lever G³, the inner end of which is
provided with gear teeth engaging a rack on the pin G².
G represents a spring actuated rod provided with a rack also engaging the
teeth of the lever G³ whereby the pin G2 is automatically brought into engage-
ment with the revolving portion of the turret.
G5 represents a clamping nut for clamping the supplemental turret on the
stud shaft Go to hold it in its adjusted position.
The turret mechanism is constructed and operated as follows:-
The main turret is held by a power clamp when it has been properly centered.
The bottom face of the turret contains a number of recesses 1, Figs. 6 and 29.
represents a spring centering pin which is shown in Figure 6 as engaging with
one of said recesses. This pin is operated automatically by the following
mechanism.
K represents a spiral gear splined on the shaft D and journaled in the bracket K¹
projecting from the apron G. K² (Fig. 11) represents a spiral gear meshing with
the gear K and carrying a ratchet wheel K³ (see Fig. 14). This gear K² is
mounted loose upon shaft K. K represents a cam wheel provided with a
spring K and spring pawl K adapted to engage the teeth of the ratchet wheel K³.
Krepresents a gear on the opposite end of the shaft K driving a gear K8 on
the shaft K⁹.
L represents cam wheel also on the shaft K³, carrying a roller L' and provided
with a boss L2 (see Fig. 9). represents an arm pivoted on the shaft K³ and
carrying roller Figs. 29 and 30 resting on the face of the cam K5, while the
outer end of the arm engages with pin 2 to reciprocate the centering pin or
lock bolt. This pin is constructed in the following manner. (See Fig. 6.)
L³ represents bushing in which the pin 2 seats. L' represents caps screwed
over the lower end of the pin and between which and the bushing L³ is a
spring L for retracting the pin from the recess in the turret, as soon as the
roller has passed off from the lug of the cam K³. The interior of the pin
is bored out to receive rod L on the upper end of which is mounted a spring L
which when the pin is forced into the recess in the turret by means of the
cam K is compressed sufficient to take up inequalities in the various recesses.
After the centering pin has been inserted into the recess in the underface of the
furret it becomes necessary to clamp the turret rigidly into position to withstand
the strain of the tool. This is accomplished in the following manner:-
L8, L represent two segments of an expansion (see Figs. 11 and 15) or split
ring provided with a beveled flange or groove in the face engaging the annular
flanges 11, of the carriage and turret respectively.
Power devices are provided for operating said clamp ring. These
ring sections abutt against screws or studs 12 at one end while at the opposite they
are provided with pivoted buts 13 engaging a right and left threaded screw rod 14
Figs. 15 and 16 which is turned a short distance in either direction to spread
or draw the two sections towards each other and thereby clamp and unclamp
the turret from the carriage. Fig. 6 represents a lever located in the apron
for turning this screw rod 1. 76 represents a roller riding on the face of the cam
wheel L by means of which the segments L8, L are clamped and unclamped
during different portions of the revolution of this cam wheel.

page_text: M represents a ratchet pivoted upon the end of shaft M¹ and provided with a
crank arm or oscillating lever M2, having a slot adapted to engage roller L'
which travels therein, (see Figs. 6, 10 and 11 29 and 30) whereby at each revolution
of the cam wheel L the crank arm M2 and ratchet M³ are moved back and forth
slightly more than one-sixth of a circle, as shown in Fig. 6, which shows it in
the central and normal position, Fig. 29 which shows it nearly in the extreme left
position and Fig. 30 which shows it nearly in the extreme right position. The
ratchet M on the end of crank arm M2 is held by means of springs m in engage-
ment with the ratchet wheel M³ Fig. 13 keyed on the shaft M, each provided with
six ratchet teeth in the faces thereof, whereby at each revolution of the cam wheel L,
the shaft M is caused to travel one-sixth of a revolution. M* represents a bevel
gear on the shaft M¹ engaging a gear ring M5 on the inner face of the turret J.
The relative proportion of these gears M4, M5 is such that for each sixth of a revolu-
tion of the shaft M' the turret makes one-eighth of a revolution on the carriage, the
proper distance for bringing another tool holder J2 into central position ready
for use. The mechanism for releasing the lock and revolving the turret is as
follows.
Gear K continuously revolves the gear K2 and ratchet wheel K. m¹ Figs. 6,
29 and 30 represents a lever engaging the end of the pawl K and holding the
pawl out of engagement with ratchet wheel K³, the opposite end of this lever
When the lever N
engages a cam m² on the shaft m of the tripping lever N.
is thrown forward by the operator the lever m² pivotted at M" on apron G is
freed from the end of the dog K which engages the ratchet wheel K and causes
the cam K to make one revolution, the oscillating lever makes one-sixth of a
revolution to and fro thereby revolving the turret one-eighth of a revolution.
The result of this revolution has been that the cam K has retracted the centering
pin at the first movement of starting and the cam wheel L being revolved
through the transmitters K7, K8 releases the lever which unclamps the turret
from the carriage, the cam wheel L then continuing its rotation, carries the crank
arm M of ratchet M through one-sixth of a revolution and carrying with it the
shaft and gear M which in turn rotates the turret one-eighth of a revolution,
after which the cam K³ inserts the centering pin into the recess of the turret
and the lever is lifted to clamp the turret in place and the movement stops in
that position.
If it is desired to move the turret more than one space the hand lever N is
tripped again or it may be thrown over and left in that position until the turret
has nearly reached the requisite position when the lever is thrown back and the
turret is stopped and clamped as soon as it has reached the centering position.
In order to provide an automatic stop for the forward movement of the turret
carriage corresponding to the different feeds required for the several different
tools the following mechanism is provided.
0, Fig. 17, represents a shifting rod mounted in brackets 01 on the end of
frame of the machine, see Fig. 1, this rod has eight grooves.cut in the periphery
thereof in which are seated the rods or bars 03. These rods are screw-threaded
at their rear ends and fitted into the screw-threaded adjusting sleeves 03 whereby
they may be adjusted endwise in their several grooves in the shifting bar.
represents set screws for holding the parts to their adjusted position. At regular
intervals along the bar 02 are provided notches 0. In each one of which notches
upon said bar is secured a tappet or stop 06. 07 represents a spiral gear sleeve
journaled in a bracket 08 projecting from the turret carriage. This gear sleeve
is hollow and through it passes the stop bar 0. 0 represents a lug upon the
inner side of the hollow gear 07 in position to strike one or the other of the
several tappets 0%. This gear 07 is driven by means of a spiral gear o Fig. 11
mounted on the shaft M. at such a relative speed as to cause the lug 02 of the
gear to travel one-eighth of a revolution for each eighth of a revolution of
the turret, thereby bringing the lug 09 cach time opposite the tripping bar 0³
corresponding to the tool which is central or in working position with the turret

page_text: whereby the forward travel of the turret carriage which is automatically and
independently tripped at different positions in its forward travel according to the
tool which happens to be in use.
The manner of stopping the feed by stop bar O is as follows. As the lug 09
strikes one of the tappets 06 the stop bar O is thrown forward a short distance
said distance being limited by stop 012, acting on the lever P and through this
lever and connecting rod P upon the crank arm (see Figure 3) to which is
connected the lever which shifts the clutch disconnects the gear D8 and
stops the feed.
The lever P and connecting rod P¹ being controlled by spring p
on rod p.
When the operator desires to run the turret back by the fast traversing screw
shaft he moves the lever E, Figure 1, which is connected by bevel gearing E²
E Figure 23 to shaft E back, i.e. towards the left, rotating said shaft E releasing
the brake from the driving pulley & through the medium of the cam elever et
and sleeve e, at the same time the pin on crank lever e¹ is shifted towards the
left by means of the slot e⁰ in cam e bringing the crossed belt on the pulley d'
onto the fast pulley d thus rotating the transverse shaft ]). This drives the
turret carriage back until it strikes against the tapper e7, Figure 1 thus retract-
ing shaft E and shifting the cam e and lever e¹ backward and by means of the
said lever e shifting the crossed belt back onto the loose pulley d. At the same
time the clutch is thrown into engagement through the tapper 113 on shaft E
engaging and forcing lever 8 on shaft 1) backward throwing lever 1015 forward
and with it the rod of levers D16 119 pivotted on the shaft D, the levers D16 D19
shifting clutch & freeing the gear wheel D8 and allowing fast speed to be trans-
mitted to shaft 1 through gears d³ d. Thus a fast speed is obtained for rotating
the turret.
Figure 28 is a detail view of the parts of the shifting devices in their normal
position. When lever E¹ is in a vertical position cam is in the position shown
in full lines, raising lever * (see Figure 26). When in this position the brake
is applied to pulley When lever E' is thrown to the rearward, cam eis
thrown forward and the driving belt from the loose pulley is on pulley d², the
brake being released. When lever is thrown forward cam 3 is thrown to its
extreme opposite position to the right (see dotted lines Figure 26) out of engage-
ment with lever and the other of the driving belts is thrown on pulley,
so that the traversing shaft D7 can be readily employed to move the carriage
either forward or back by the movement of lever E or it can be held in a fixed
position by the brake to enable the work shaft to operate the carriage or the
various feeds.
The power feeds are all driven by the reversing gear F3 or F which drive 19
on shaft which through one of its gears transmits motion to the shaft H.
Gear H on said shaft meshing with gear H7 on shaft I (see Figs. 18 and 19)
drives shaft I. The worm 2 on said shaft drives the worm wheel F1 on the revoluble
nut F. When this power is employed gear H is clutched to the shaft I, by
the friction clutch member . It is frequently desired to control the feed of the
turret carriage forward and backward by hand. This is accomplished by slacking
nut releasing clutch h and turning the hand wheel ³, this drives the revoluble
nut F and feeds the carriage accordingly.
It is necessary when the main turret is revolved to unship the feeding mechanism
of the supplemental turret. This is accomplished by means of lever and an
eccentric on the end of its shaft engaging with a groove of sleeve which slides
on shaft carrying the clutch teeth h that mesh with the clutch teeth 48 on
stud shaft 12 (see Figs. 6 and 7). In Fig. 6, this gear is unshipped when the
lever g is in the position shown in full lines and the clutch is in position as shown
in dotted lines.
There are various advantages obtained by the various lathe mechanism herein
shown. The lathe is adapted to do a large range of work, heavy as well as light
work, accurately and more expeditiously than other tools hitherto employed for

page_text: this purpose.
In fact the lathe is adapted to rapidly, accurately and economically
turn, bore, thread and finish a wide range of castings which are usually held in
position by a chuck.
This is
Among the advantages obtained are the employment of a rapidly moving traverse
shaft or running the main turret back and forth and employing a secondary
or work shaft for feeding the tools to their work instead of depending upon the
work shaft for running the carriage back or for adjusting the same.
extremely important in lathe adapted to finish work several feet in length and of
large size requiring a slow feed. The rapid traversing of the carriage backward
and forward by an independent traversing shaft saves a large amount of time and
hard labor. Again when it is desired to move the carriage and turret by hand
the rapid traverse shaft may be employed for this purpose to quickly adjust
the tool in position. As different kinds of work require different rates of turret
feed, by means of change gears on shaft f and four different tool feeds may be
obtained independent of the spindle feed which has of itself a large range of speeds
and these speeds of the shaft f and h may be varied by an increase of the change
gears. The speed changes for feeding the supplemental turret are varied in like
manner by the change gears on shaft f and H. It is of manifest advantage to
employ a great variety of tools each supported in its own tool holder and also
to employ means to use in succession, roughing and finishing tools or two or more
different tools at the same time. This requires strong and rigid supports for
the tool holders as well as strong power devices as well as means for rapidly
changing of tool by revolubly adjusting the turret and the longitudinal adjust-
ment of the turret carriage. All of which means are provided by the mechanisms
herein shown and described.
The traverse shaft is shown threaded and engaging a nut fixed to the tool
carriage which nut is also adapted to be revolved by the work shaft when it is
employed for work feeds. It is not desired to be limited to this precise class
of longitudinal feeding devices as a rack feed or other well known feeds may be
employed without materially effecting the mode of operation.
The means herein shown for revolving the main turret by power also in step
movements to correspond with the distance which the tool holders are apart from
each other and also the means for automatically stopping the revolution of the
turret at any desired interval, and the means for registering and clamping the
turret automatically are highly useful. They not only accelerate the operation
of the lathe but they save labor in the operator and are quick and accurate in their
adjustments.
The traversing shaft is shown driven by reversing belt and pulleys. This is a
convenient method of operating the traversing shaft at a high rate of speed as
well as for holding the shaft against rotation by a brake which is applied automati-
cally by the shifting mechanism. The same general results could be obtained
by shifting gears, but the belt drive is preferred because of its simplicity and
cheapness.
Referring to Figures 31, 32, 33, and 34; 170 represents the lathe bed, 171 the
main spindle, 172 the cone gear for driving the same, 173 a chuck mounted on
the main spindle, 174, 175 the spindle bearings. 176 represents the slides on
carriage bed 170. 177 represents the tool carriage traveling thereon, 178 the
turret revolubly mounted on said carriage, 179 the turret apron. 180 represents
the traversing shaft which is driven to move the carriage.
Means are provided for rotating this shaft at speeds in unison with the main
spindle, and by a fast speed independent of the spindle speed.
181 represents a gear on the main spindle meshing with gear 182 on stud
shaft 183. 184 represents a gear on the feed shaft and loosely mounted thereon,
meshing with gear 184, 185 represents a clutch provided with teeth 186 adapted
to engage with the clutch teeth 187 on the sleeve 188 of gear 184. When this
clutch 185 which is operated by a lever 189 and thrown in engagement with
the sleeve 188, gear 184 is clamped to the feed shaft, which then takes its power

page_text: from the main spindle, for the slower speeds. The fast speed is applied to said
feed shaft 180 preferably by driving pulley 190, loose pulleys 191, 192, open
and cross belis 193 and 194. 195 represents a belt shifting rod connected to said
belts and operated by bell crank lever 196 engaging the grooved collar 197.
When the gear 184 is running loose on the shaft the feed shaft 180 may be driven
by either the open or cross-belt whichever is shifted onto the driving pulley 190.
The shaft 180 operates the carriage traversing device preferably by means of
nut 198 engaging with threads 199, on the feed shaft. The nut is also revoluble
for hand feeding by means of the pilot wheel 200 and gear 201. This nut is
clamped or locked in the usual manner through friction clutoh 202 and knuri 203
which lock the pilot wheel shaft to the apron and thereby prevent the nut from
revolving, when the carriage can be moved by the traverse shaft, and when the
clamp is released the pilot wheel is geared to the revoluble nut so as to revolve
it by hand.
Mode of operation as to Figs. 31, 32, 33, and 34.
The shaft 180 is normally disconnected from both of the driving mechanisms
by moving the lever 189, the gear 184 is clutched to the shaft and the feed shaft
is driven by the spindle gear. Of course the change speed gears may be employed
so as to drive the gear 184 at varying rates of speed from the main spindle in
the usual manner, and any well known form of such gears may be employed.
For fast driving the lever 189 being in normal position, either one of the driving
belts 193, 194 may be shifted onto the driving pulley 190 and a fast speed con-
tained in either direction. It is not essential to employ belts and pulleys for
obtaining these fast speeds, as any other well known transmitters can be employed
for this purpose the essential feature being that their speed be independent of
the main spindle and reversible, so as to drive the carriage backward or forward
at a high rate of speed.
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 correspondent, I declare that what I claim is:
1. In a lathe employing a main spindle, a geared chuck secured thereto, a
scries of loose gears journaled on said spindle, a clutch journaled on the spindle
between the loose gears, in combination with a back gear shaft, loose gears
journaled thereon and meshing with the gears of the main spindle, clutch and
lever mechanism for clamping said gears to their shafts whereby various rates
of speed for the work chuck are obtained substantially as specified.
2. In a lathe employing a main spindle, a geared chuck secured thereto, a
series of loose gears and clutches journaled on said spindle, in combination with
a back gear shaft having a spur gear adapted to engage and disengage the chuck
gear, a series of sleeves on said shaft, a series of loose gears journaled thereon
clutches intermediate of said loose gears journaled on said shaft and lever
mechanisms for connecting and disconnecting the said gears to their respective
supporting shafts, whereby a varying range of speeds is obtained by the different
train of gears, substantially as specified.
3. In a lathe employing a main spindle a geared chuck secured thereto, a
series of gears loosely journaled on said spindle, clutches for locking said gears
to the spindle, in combination with a back gear shaft B', a series of gears journaled
on sleeve 132, a series of clutches and lever mechanism for clutching said gears
to their sleeves, a loose gear journaled on said back shaft, a clutch for locking
said gear to its shaft and a shipping gear and mechanism for connecting and
disconnecting it with the geared chuck, whereby the chuck may be driven from
the main spindle or from the back gear spindle or by the changeable train of
gears, substantially as specified.
4. In a lathe employing a traveling tool carriage and feeding mechanism,
means for operating said feed devices by power taken from the lathe spindle,
in combination with alternate fast driving mechanism connected to and operating

page_text: the carriage traverse devices independent of the speed of said spindle, substan-
tially as specified.
5. In a lathe employing a reciprocating tool carriage, a traverse feed screw
shaft engaging with a revoluble nut mounted on said carriage, means for driving
said shaft independent of the laihe spindle, a work feed shaft driven from the
lathe spindle and carrying transmitting gear, actuating mechanism which com-
municates motion to the feed devices of the tool carriage whereby said carriage
is driven from the work shaft independent of the traverse shaft, substantially as
herein described.
6. In a lathe, employing a tool carriage, à traverse feed shaft driven inde-
pendent of the spindle and provided with means for communicating longitudinal
motion to said tool carriage, loose and fast driving pulleys mounted on said shaft,
belt shifting mechanism mounted upon said lathe and operated by lever mechanism
for shifting said belt and reversing the motion of said shaft, substantially as
specified.
7. In a lathe employing a tool carriage, a traverse feed shaft driven independent
of the spindle and provided with means for communicating longitudinal motion to
said tool carriage, loose and fast driving pulleys mounted on said shaft, a brake
adapted to engage the fast pulley, a straight and cross belt, belt shifting mechan-
ism connected to said belts and lever mechanism adapted to simultaneously operate
the brake and belt shifting mechanism, substantially as herein specified.
8. In a lathe employing a turret carriage moving longitudinally on ways and
revolully mounted upon the carriage bed, power mechanism operated by the
work shaft adapted.to revolve said turret in step movements and shipping devices
for connecting and disconnecting the revoluble power devices, substantially as
herein specified.
9. In a lathe employing a turret carriage moving longitudinally on ways and
revolubly mounted upon the carriage bed, power mechanism operated by the
work shaft adapted to revolve said carriage in step movements, means for un-
shipping the revoluble power devices, means for automatically unshipping the
power driving mechanism automatically at the end of each revolution, sub-
stantially as herein specified.
10. In a lathe employing a reciprocating carriage a turret revolubly mounted
upon the carriage bed, power driving mechanism actuated from the work shaft
and operating a train of transmitters having a revoluble tripping cam adapted
to revolve the turret one step at each revolution of said cam and lever mech-
anism connected thereto adapted to automatically unship the power at the end
of such revolution of said cam, substantially as specified.
11. In a lathe employing a revoluble turret mounted upon a traveling bed,
mechanism for revolving said carriage receiving motion through a series of trans-
mitters, in combination with locking mechanism operated from said transmitters
which contain means for automatically locking the turret at the end of each
step movement of the revolution and releasing said lock at the commencement
of the revoluble movement, substantially as specified.
12. In a turret traversing mechanism, a carriage a turret revolubly mounted
thereon, a reversible traversing screw engaged with a revoluble nut journaled in
the carriage, a worm engaged with a worm wheel fixed to a revoluble nut,
variable feed mechanism connected to said nut having gear connections with a
work shaft driven from the main spindle and reversing mechanism applied to
said carriage and work shaft, substantially as specified.
13. In combination with a revoluble turret mounted on a traveling bed and
apron carrying feeding mechanism, a pair of clamps applied to said turret and
power actuated mechanism connected thereto and supported on said carriage and
ineans for automatically expanding said clamps at the end of the revoluble turret
movement and releasing the same at beginning of such movement, substantially
as specified.
14. In a turret lathe employing a revoluble turret mounted on a traveling

page_text: turret
bed and apron, power feeding mechanism for moving the
longitudinally power mechanism for revolving said turret, clamps applied
to said turret and connected by lever and cams to the feeding mech-
anism whereby the turret is automatically locked and unlocked by the power
feeding devices at appropriate times, substantially as specified.
15. In a turret lathe, employing a traveling bed and a turret revolubly
mounted thereon, power mechanism for revolving said turret, a spring actuated
centering pin, a series of circular recesses in the turret arranged in a plane
opposite said pin, power feeding mechanism mounted on said apron with de-
vices for automatically operating said centering pin whereby it is retracted in
advance of the revoluble turret movement and locked at the end of each move-
ment automatically by the power rotating transmitters, substantially as specified.
16. In a lathe employing a longitudinally traveling turret carriage, a turret
revolubly mounted thereon, in combination with a work shaft employing rever-
sible transmitting gear operating a series of transmitters imparting longitudinal
motion to the turret, a series of transmitters imparting rotary motion to the
turret and a series of transmitters imparting lateral motion to a supplemental
turret, mounted on the main turret and shipping levers for connecting and dis-
connecting each of said series of transmitters, substantially as specified.
17. In a turret lathe employing a longitudinally moving carriage, a turret
revolubly mounted therein and containing a series of tool sockets, supplemental
turret mounted on slides, a power feed shaft journaled on the bed of said turret
and means for revolving said turret, means for feeding said supplemental turret
laterally, both of which feeding movements receiving their motion from a com-
mon work-shaft and lever mechanism connecting and disconnecting the said
power actuating mechanism, substantially as specified.
18. In a turret lathe, a sliding carriage, a main turret revolubly mounted
thereon carrying a supplemental revoluble tool holder adapted to carry a plurality
of cutting tools, substantially as specified.
19. In a turret lathe a sliding carriage, a turret revolubly mounted thereon
carrying a supplemental revoluble tool holder adapted for carrying a plurality
of cutting tools and mounted on a slide on the main turret and means for travers-
ing the main turret and means for feeding the said supplemental turret traversely
to the line of travel of the main turret, substantially as specified.
20. In a turret lathe employing a revoluble main turret and a longitudinally
traveling supplemental turret mounted thereon, in combination with a train of
transmitters for feeding said supplemental turret receiving motion through
shaft I, the transmitting gear H the friction clutch the knurl h, the hand
wheel for shipping and unshipping the longitudinal feed of the main carriage,
substantially as specified.
21. In a turret lathe employing a traverse shaft connected to and operating
the tool carriage and driven by belts independent of the speed of the main spindle,
a work shaft having two loose gears mounted thereon, one having gear con-
nections with the spindle and the other geared to the traversing shaft, a clutch
intermediate of said gear, shipping mechanism for operating said clutch, con-
nected by shipping levers to stop devices actuated by the carriage whereby said
gear are automatically clutched and unclutched by the tool carriage travel so
as to drive said work shaft at different speeds for the different feed movements,
substantially as specified.
22. In a turret lathe employing a traversing shaft for rapidly moving the
carriage and a work shaft employing transmitting gears transmitting motion to
a revoluble nut engaging the screws of the work-shaft, the combination with
the transmitting gear of the work-shaft connected to the revoluble screw by a
clutch mechanism of a worm connected to said nut, a shaft geared to the revoluble
nut, a clutch, the driving gear and the hand wheel, a shipping rod and the nut
whereby the power feed of the work shaft may be connected and disconnected,
substantially as specified.

page_text: 23. In a turret lathe employing a traveling tool carriage with traversing shaft
operating a revoluble driving nut, in combination with a work-shaft, and bevel
reversing gears, a transmitting gear, shafts H, I, an the transmitting gears
mounted thereon a worm on shaft I and the revoluble nut F and gear Ft whereby
motion is transmitted to said nut from the work shaft by worm gear connection,
substantially as and for the purpose specified.
24. In a turret lathe employing a reciprocating tool carriage, a traverse feed
screw shaft engaging with a revoluble nut mounted on said carriage, means for
driving said shaft independent of the main spindle and changeable gear mech-
anism driven from the main spindle, communicating motion to said traverse feed
shaft said mechanism being adapted to be alternately employed, substantially
as specified.
25. In a turret lathe, a revoluble turret rotating on a traveling carriage, a
gear for rotating said turret engaging with a gear on a shaft journaled in the
carriage which shaft carries a gear driving a gear fixed to the turret, a stop
sleeve surrounding a stop-bar supported in the main frame and carrying an
abutment adapted to engage with the independently adjustable stops carried on
the stop-bar, substantially as and for the purpose set forth.
26. In a turret lathe, a carriage, a revoluble turret mounted thereon, a gear
fixed to the turret actuated by a gear fixed to a shaft journaled in the carriage
and means for rotating the said carriage shaft by mechanism external to the
carriage, substantially as and for the purpose set forth.
27. In a turret lathe employing a mechanically actuated lock bolt, means for
automatically taking up wear consisting of a yielding spring interposed between
the actuating device and the tapered portion of the pin that enters the turret
recesses, substantially as and for the purpose set forth.
28. In a turret lathe a traveling carriage, a revoluble turret mounted thereon
provided with a series of recesses adapted to receive a lock-bolt supported in
the turret carriage and a cam adapted to actuate and seat the lock-bolt at the
termination of the intermittent turret movement, substantially as and for the
purpose set forth.
29. In a turret lathe, a turret carriage, a revoluble turret mounted thereon,
provided with a series of recesses adapted to receive a lock-bolt supported in the
turret carriage, mechanism for rotating said turret and actuating a cam for
seating the lock-bolt at the termination of the intermittent turret movement and a
spring for retracting the lock-bolt prior to the beginning of the intermittent
turret movement, substantially as and for the purpose set forth.
30. In a turret lathe, a work shaft parallel to the axis of the lathe provided
with devices adapted to actuate the turret feed mechanism and also to actuate
the turret feed mechanism and also to actuate the turret rotating mechanism,
substantially as and for the purpose set forth.
31. In a turret lathe employing a revoluble main turret an inclined slide
mounted thereon, a multiple revoluble tool holder mounted on said slide where-
by the tools carried by said multiple holder are made to clear the tools or fixtures
carried by the main turret, substantially as described.
32. In a turret lathe, a carriage supporting a revoluble turret, a gear on said
turret engaged with a gear on a shaft supported in the carriage, a shaft driven
from an independent source of power and means for intermittently rotating the
turret by mechanism adapted to start the turret from a state of rest with a
gradually accelerating velocity and to stop the same with a gradually decreasing
velocity, substantially as and for the purpose set forth.
33. In a turret lathe, a carriage supporting a revoluble turret, a gear on said
turret engaged with a gear on a shaft supported in the carriage, power devices
independent of the main spindle, actuating a ratchet on said shaft through a
vibrating lever arranged to engage in said ratchet and a crank for operating
said lever, substantially as and for the purpose set forth.

page_text: 34. In a turret lathe a carriage supporting a revoluble turret, a gear on said
turret engaged with a gear on a shaft supported in a carriage driven by power
devices independent of the main spindle actuating a ratchet on said shaft through
a vibrating lever arranged to engage in said ratchet, a crank for operating said
lever, and clutch mechanism arranged to automatically start and stop said crank
at the end of a revolution, substantially as and for the purpose set forth.
35. In a turret lathe, a carriage supporting a revoluble turret, a gear on said
turret engaged with a gear on a shaft supported in a carriage, driven by power
devices independent of the main spindle actuating a ratchet on said shaft through
a vibrating lever and arranged to engage said ratchet, a crank for operating
said lever, clutch. mechanism arranged to start and to automatically stop said
crank at the end of a revolution and a locking pin actuated by a cam, rotating in
unison with said crank, substantially as and for the purpose set forth.
36. In a turret lathe a carriage supporting a revoluble turret, a locking pin
supported in the carriage external to the lathe bed and adapted to be actuated by
mechanism supported by the turret carriage, substantially as and for the purpose
set forth.
37. In a turret lathe, a carriage supporting a revoluble turret in combination
with a lock-bolt supported in the carriage, a turret rotating mechanism also
operating an annular clamp for clamping the turret to its supporting carriage,
substantially as and for the purpose set forth.
38. In a turret lathe, a carriage supporting a revoluble turret, in combination
with a lock-bolt supported in the carriage, an annular clamp for clamping the
turret to its supporting carriage, turret rotating mechanism operating by an
oscillating crank and gear connections for operating the turret as follows, with-
drawing the lock-bolt and slacking the clamps during the initial movement of
said lever, rotating the turret during the reverse movement of said oscillating
crank, seating the bolt and clamping the turret during the patter portion of
said oscillating crank movement of said oscillating crank, substantially as and
for the purpose set forth.
39. In a turret lathe, a carriage supporting a revoluble turret, a locking bolt,
rotating mechanism, a power actuated clamp and means for actuating the ele-
ments specified in the following order:
1. Withdrawing the locking pin and unclamping turret.
2. Rotating turret one or more spaces.
3. Seating lock bolt.
4. Clamping turret, substantially as and for the purpose set forth.
40. In a turret lathe, the combination of a work shaft adapted to be driven
from an independent source of power, a gear splined thereto, journaled in. the
turret carriage and engaging with a loose gear carrying a ratchet adapted to
engage with clutch dog carried on a disc, coaxial with said driving gear and
supported on the same shaft, said ratchet driving mechanism adapted for with-
drawing the lock-bolt, rotating the turret through one space and clamping the
turret to its supporting base or carriage, substantially as and for the purpose
set forth.
41. In a turret lathe, a carriage turret, supported revolubly thereon, a slide
on said turret, a tool post mounted upon said slide, means for feeding said tool
post by power and shipping mechanism for connecting said feeding devices when
the tool post is in operative position, substantially as and for the purpose set
forth.
42. In a turret lathe, a turret carriage with a revoluble turret mounted thereon,
in combination with a slide on said turret, a tool post adapted to move on said
slide, a feed screw actuating said tool post, a gear on said screw engaging with a
gear mounted on a clutch shaft provided with teeth adapted to engage with a
transmitting shaft journaled in the carriage and driven by the carriage feeding
mechanism, substantially as specified.
43. In a lathe, in combination with a reciprocating tool carriage and a main

page_text: turret revolubly mounted thereon of an inclined supplemental turret mounted
on a traversing slide fixed to the main turret bed, means for feeding said turret
transversely across the line of travel of the main turret, feeding devices for
moving the main turret longitudinally, both of said feeds being obtained from
the same prime mover on the work shaft, substantially as specified.
44. In a turret lathe, employing a traveling carriage, a revoluble turret mounted
thereon, in combination of a split clamp ring engaging with the turret base and
means for actuating the clamping mechanism from a source of power independent
of the main spindle, substantially as specified.
45. In a turret lathe, employing a carriage supporting a revoluble turret,
the combination of a split clamp ring with annular flanges on the turret, said
split ring being mounted upon the supporting carriage and means for actuating
the said split clamp ring, substantially as specified.
46. In a turret lathe, a carriage supporting a revoluble turret, provided with
inclined annular flange in combination with a split ring supported on said carriage
adapted to engage with inclined annular flanges of the turret and power actuating
devices, actuated by the feed devices on said carriage, adapted to clamp split
ring and lock the turret in position, substantially as specified.
47. In a turret lathe, supported on a carriage traveling on the main frame, a
revoluble turret mounted on said carriage larger in diameter than the width of
the carriage, a series of annular indexing recesses in said turret adapted to
receive a lock bolt supported by said carriage external to its bed and means for
actuating said lock bolt, mounted upon the carriage apron, substantially as
specified.
48. In a turret lathe, employing a traveling carriage carrying a revoluble turret
and feeding devices for moving said carriage, in combination with a stop bar,
parallel to the axis of the lathe supported on the main frame, a stop sleeve
journaled on said stop bar, a plurality of independent adjustable tappets carried
on said stop-bar and mechanisin operated by the engagement of said sleeve with
a tappet which unships the turret feed, substantially as specified.
49. In a turret lathe, employing a traveling carriage supported on the main
frame, a revoluble turret mounted thereon and feeding mechanism for driving
the carriage, in combination with a stop-bar supported upon the main frame and
parallel with the line of carriage travel, a plurality independent adjustable
stops fixed to said stop-bar, a rotating sleeve surrounding said stop-bar and
adapted to engage with either one of said stops moving said stop-bar which
actuates mechanism to unship the carriage feed by the actuation of said stop-
bar, substantially as specified.
50. In a turret lathe employing a main frame, a revoluble turret mounted
upon the traveling carriage, feed mechanism for moving said carriage, in com-
bination with a stop-bar supported on said lathe parallel to the line of carriage
travel, a plurality of independent adjustable stops a rotating sleeve encircling
said stop bar journaled to the carriage, geared to rotate in unison with the turret
and adapted to engage with either of the stops, mechanism connected to said
stop-bar adapted to unship the carriage feed which mechanism is actuated by the
engagement of said sleeve with one of said stops, substantially as specified.
51. In a turret lathe, a main frame, a carriage sliding thereon supporting a
revoluble turret, a sleeve. journaled in the turret carriage, means for rotating
said sleeve in unison with the turret, an abutment in the sleeve, a stop-bar
whose axis is parallel to the direction of the turret movement carrying a plurality
of independently adjustable stops, one stop for each turret tool, the stop bar being
journaled on the main frame so as to slide therein, means for disengaging the
turret feed by the end movement of the stop and a solid stop on the stop-bar
arranged to limit the end movement of the stop-bar for the purpose of providing
a fixed stop in addition to a feed stop for each tool in the turret, substantially as
specified.
52. In a turret lathe, a main frame, a carriage sliding thereon supporting a

page_text: revoluble turret, a sleeve journaled in the turret carriage, means for rotating
said sleeve in unison with the turret, an abutment in the sleeve, a stop-bar whose
axis is parallel to the direction of the turret movement carrying a plurality of
independently adjustable stops, one stop for each turret tool, the stop-bar being
journaled in the main frame so as to slide therein, means for disengaging the
turret feed by the movement of the stop-bar endlong in its bearings and a solid
stop arranged to limit the endlong movement of the stop-bar in its bearings for
the purpose of providing a fixed stop in addition to a feed stop for each tool in
the turret, and means for retracting the stop bar so as to allow the turret feed to
be re-engaged, substantially as specified.
53. In a lathe, employing a traveling carriage, a turret revolubly mounted
thereon and carrying feeding mechanism, in combination with a stop rod carry-
ing a series of adjustable stops, means for rotating said stop-rod and said turret
in unison for adjusting the different stops for different turret tools, said stops
being adapted to engage with the turret carriage and actuate the stop rod and
feed unshipping devices which are connected to and operated by said stop-rod,
substantially as specified.
54. In a turret lathe employing a traveling carriage and a traversing shaft,
for moving said carriage, the combination with said shaft, of two independent
sets of driving mechanism, one actuated from the main spindle, and the other
from a source of power independent thereof, a revoluble nut journaled in said
carriage and having screw-threaded engagement with said- shaft, substantially
as specified.
55. In a turret lathe, employing a traveling carriage and a traversing shaft,
change gears and reversing mechanisms for actuating said carriage, the com-
bination with said shaft, of two independent sets of driving mechanisms, one
receiving power from the main spindle and the other from an independent
source of power, and a revoluble nut journaled in said carriage having screw-
threaded engagement with said shaft, substantially as specified.
Dated this 27th day of December 1899.
HASELTINE, LAKE & Co.,
.45, Southampton Buildings, London, W.C.,
Agents for the Applicant.