Year: 1899

page_text: Date of Application, 30th Oct., 1899-Accepted, 8th Sept., 1900
աpvԺԱՆ ԵՆ ՂՆԱԵՏ,
I, JAMES HARTNESS, of Springfield, in the County of Windsor, State of Vermont,
United States of America, Gentleman, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
-
This invention has relation to turret-lathes, and has for its object to provide
improvements thereupon whereby the work-holder and work may be moved
laterally for various purposes. Another object of the invention is to provide fluid
operated mechanism and improved devices for governing and controlling it by
means of which the turret or the work-holder, or both, may be moved at different
speeds, and hence the said parts may be moved slowly while the tools are operating
upon the work, and rapidly when said parts are moving the tools, or the work
towards or from operative position.
Another object of the invention is to provide certain improvements in the
machine whereby it will be rendered capable of performing a greater variety of
work and whereby it may be controlled more accurately and with less muscular
effort than heretofore.
To these ends the invention consists in a machine possessing certain features
of construction and relative arrangement of parts, all as illustrated upon the draw-
ings, now to be described in detail, and finally pointed out in the claims hereunto
appended.
Reference is to be had to the accompanying drawings, and to the letters and
figures marked thereon, forming a part of this specification, the same letters
designating the same parts or features, as the case may be, wherever they occur.
Of the drawings:-
Figure 1 represents in side elevation a turret-lathe embodying my invention.
Fig. 2 represents a front elevation of the machine.
Fig. 3 represents a transverse sectional view looking at the front end of the
machine from the rear.
Fig. 4 represents a plan view of the machine.
Fig. 5 represents a horizontal section on the line 5-5 of Fig. 1 of the front
end of the machine.
Fig. 6 represents a section on the line 6-6 of Fig. 5.
Fig. 7 represents a longitudinal section through the machine.
Fig. 8 represents a partial sectional view on the line 8-8 of Fig. 5.
Fig. 9 represents a plan view partially in section of the machine.
Fig. 10 represents in sectional view on the line 10-10 of Fig. 7 the feeding
cylinder for the work-holder.
Fig. 11 represents a rear end elevation of the machine, the rear end of the
machine being in section.
Figs. 12 and 13 represent transverse sections through the rear end of the
machine.
Figs. 14 and 15 represent the hydraulic clamp for locking the turret carriage
against movement.

page_text: ""
Figs. 16, 17 and 18 represent what I term the "escapement" or "regulating'
device for regulating the volume of fluid admitted to the cylinders to feed the
work-holder or the turret carriage.
Figs. 19 to 26, inclusive, represent the valve adapted to be operated by the
machine attendant for controlling the movements of the head-stock, the valve for
the turret-carriage-moving devices being substantially similar thereto.
Referring to the drawings, which show one form of the invention which I have
selected for the purpose of illustration and disclosure, indicates the bed of
the lathe which is mounted upon suitable legs or standards a¹, a², and is provided
with ways or guides a³, at, for the carriage b upon which the rotary turret e is
mounted. So far as the general characteristics of the bed, the carriage and the
turret are concerned, the carriage slides upon ways or guides, and the turret
rotates upon the carriage to present tools successively to the work, in accordance
with a preconceived arrangement or plan. The bed is hollow, as shown, and at
its front end is provided with a flat portion a³ in a plane below that of the rear
portion, to receive the transverse or lateral guides or ways for the sliding head-
stock and the rotary work-holder or carrier, as best shown in Fig. 7.
Referring to Figs. 11, 12 and 13, it will be noted that the shear or way a³ is in
a plane above that at a, and that whereas the former is substantially prism-shaped
and undercut, the latter is rabbeted or cut-away and is provided with a longi-
tudinally extending gib a secured thereto by bolts a'.
The carriage b is provided with a V-shaped groove 61, in its under-surface near
one edge to receive the shear ³, and with a laterally extending tongue 2 to rest
upon the shear or way a¹, and to hold the carriage from vertical movement on the
side containing the V-shaped groove, gibs 63, 64, are secured to it by bolts and
project under the prism-shaped way or shear a³, the latter being undercut for
this purpose.
To move the carriage longitudinally of the bed towards and from the head-
stock, I employ fluid-operated devices consisting of a cylinder 65 formed in the
carriage, and a piston 8 on the end of a piston-rod a³, passed through a stuffing-
box at the end of the cylinder and firmly secured in the cross-bar 10 on the
rear end of the bed. Fluid is admitted alternately to the opposite sides of the
stationary piston 8 by ports or ducts a, 12 Fig. 9 respectively, which com-
municate with a valve-casing d by means of tubes or pipes a, a Fig. 15. The
valve which controls the passage of fluid through these ducts or pipes will be
described presently, it being sufficient to state at this time that when the valve-
lever or handle is thrown, to the left in Fig. 1, the carriage is fed to the left or
towards the head-stock, and when the said lever or handle is thrown to the right,
the carriage is fed in that direction, the speed of movement being regulated or
determined by the position of the handle that is to say, when the handle is
thrust a short distance to the right or left, the carriage is fed slowly but when the
handle is moved through an arc of sixty degrees, the carriage is fed rapidly, all as
will be hereinafter explained in detail.
It
On the flat front portion of the bed, I place a hollow casting or frame e,
which is bolted in place by bolts e¹. e¹, as illustrated in the several figures. This
frame, as shown in Fig. 3, is considerably longer than the cross-diameter of the
bed, and consequently extends laterally beyond it for a considerable distance.
is formed with parallel ways or shears e² to receive the head-stock f, which is
formed to slide upon them. Said head-stock is substantially square when viewed
in front elevation, and is adapted to slide on said ways or shears to the right in
Fig. 3, so as to move the work relatively to the operating tool. Said head-stock
is recessed to receive a work-carrier f which consists of a bevel-gear having a
peripheral flange 2. A ring or circular gib f3 is secured to the rear face of the
head-stock f and overlaps the flange f2, there being inserted between said
flange and the gib, and the flange and the head-stock, a series or plurality
of rolls f, f, held apart by separators f. f. The head-stock is provided with
an annular rearwardly projecting flange or bearing f, on which the work-carrier fl

page_text: is journaled, there being between the two, a frusto-conical bushing F. A chuck,
which is indicated as a whole at f8, is secured to the rear face of the work-carrier
and overlaps the gib and it is provided with a central aperture registering
with an aperture 10 extending through the head-stock, whereby a back-facing or
other tool may be inserted through said apertures from the front to operate upon
the interior of the work.
Power is imparted to said work-carrier through the medium of a bevel-pinion et
Figs. 2, 5 and 11, rigidly secured to a telscoping shaft consisting of a spindle
having its reduced end e journaled in a bearing carried by the head-stock, and
having its end inserted into a sleeve e', journaled in bearings e, e, supported by
the laterally extending frame e. The inner end of the sleeve is formed with a
flange carrying oppositely arranged radially extending lugs e, in which
diametrically-opposite rollers el are journaled, said rollers being beveled, as seen
in Fig. 6, and extending into longitudinal grooves or keyways in the shaft or
spindle e. Hence when the hollow shaft or sleeve e is rotated, it causes the rota-
tion of the spindle e, although the latter is free to be moved longitudinally with
the head-stock. The sleeve e may be driven in any suitable way, as by a cone-
pulley e adapted to be connected to the shaft by clutching devices illustrated as
a whole at e, but which I shall not describe as they may be of any type now
known, and their peculiar structure does not form an essential feature of my
invention, it sufficing to state that the spindle or shaft is driven or stopped at
will, and that the speed of rotation of the work-carrier depends upon the character
of the tool that is operating upon the work, and other conditions which are to
be met.
I have stated that the work-carrier and the head-stock are provided with register-
ing apertures to receive a tool and tool-holder projecting rearwardly from the front
of the machine. By examining Fig. 7 in connection with Fig. 5, it will be
observed that I provide a plurality of tool-holders (indicated at g, g', g²) arranged
in the same horizontal plane and adapted to successively register with the said
apertures f, f10, as the head-stock is fed laterally of the machine. They are
mounted in guides in the frame e, and are held against rotation respectively by
screw-pins extending into grooves g', as best shown in Fig. 7. Each tool-holder
is provided on its under-side with rack-teeth g and they are adapted to be succes-
sively engaged by a pinion on the end of a longitudinally movable shaft g
journaled in bearings 8, and having on its end a pilot-wheel . By moving the
shaft g longitudinally, the pinion g6 may be brought into engagement with the
teeth of any one of the tool-holders and then by rotating the shaft, said tool-
holders may be projected through the apertures f, fio, so as to bring the tool into
operative position relatively to the work; and in order that each holder may receive
a tool, it is provided on its rear end with a conical socket go for the shank thereof.
For the purpose of moving the head-stock and the work-holder laterally of the
main frame of the machine, I employ fluid-operative devices which, as shown in
Fig. 10, consist of a cylinder h, bored in the upper portion of the head-stock and
having its ends closed by stuffing-boxes h¹, h, through which a hollow piston-
rod 2 projects, the ends of said rod being rigidly secured in lugs h³ projecting up-
ward from the stationary transverse frame e, on the front of the bed a. About
midway between its ends, the hollow piston-rod, is provided with a stationary non-
perforated piston which forms an abutment when fluid is let into the cylinder
on either side thereof to move the head-stock in one direction or the other. "Hence
the hollow piston-rod is provided with two ports h³, h, one on each side of the
piston for the purpose of supplying fluid to the cylinder to move it and the head-
stock, and communicating with the outer ends of said piston-rod are pipes or
ducts h, 8, which lead to a valve-casing i, supported by the transverse frame e,
and similar to that at d. Fluid is admitted to the valve casings i and through a
main supply pipe j, which extends from a pump or other supplying device to an
escapement or regulating device k, said pipe j having a branch leading to the
valve casing i, and a branch a leading to the valve casing d, the branch 7 being

page_text: composed in part of the flexible tube 3, this being necessary as the carriage travels
relatively to the valve casing i and the main supply-pipe j.
The liquid which escapes from the "dead" side of the piston passes through a
pipe, which leads from the casing to a reservoir in the leg or standard a², there
being a similar pipe extending from the valve-casing d and communicating with
the pipe through the medium of a flexible hose or tube 12. Through the valves
in said casings which I shall presently describe, the operating fluid may be fed to
either side of the pistons in the carriage or sliding head-stock to feed them in
either direction, it being so arranged that when the fluid passes into said casings
directly from the main supply-pipe j, said parts are moved at their maximum
speed; and hence in order to move them slowly, I have provided the regulating
devices interposed between the main supply pipe and the casings whereby a limited
volume is supplied to said valve-casings.
To this end, a pipe m connects the outlet from the escapement device k with
the valve-casing, there being a branch m¹ consisting partially of a flexible hose
which communicates with the valve-casing d. As the valve casings are substan-
tially similar, I have illustrated and shall describe only the one which controls
the passage of the fluid to the head-stock operating cylinder.
Referring to Figs. 19-to 26, inclusive, the casing i is formed in two portions i¹, i²,
the former having a chamber, into which the high-pressure or full-volume
pipes or lead. The part of the casing is formed on its inner face as a valve
seat, and it is exteriorly threaded whereby it can be screwed into the chambered
portion, as best shown in Fig. 21. The valve it consists of a circular disk having
in its upper face apertures to receive dowel-pins 6, projecting downwardly from
the valve-stem 27, said valve-stem being projected through an annular flange
formed on the chambered portion of the valve and having secured to its end a
handle or lever whereby it may be rotated. A spring 10 is inserted in a socket
in the inner end of the valve-stem and holds the valve firmly against its seat.
The valve has a trunnion which fits in a socket in the valve-seat of the valve-
casing. The full-pressure pipe leads into the chamber so that the chamber is
always full of liquid under a high pressure and the pipes h, hs, which supply fluid
to the opposite ends of the cylinder on the travelling head-stock lead into the
portion of the valve-casing, as shown in Figs. 19 to 21, there being ports 181
and in the valve-seat which communicate directly with the pipes hand h8.
The valve has an aperture 12 which may be registered with either of the ports
or ht to cause the moving of the head-stock in one direction or the other; and
in order to permit the fluid to exhaust from each one of the pipes, as h7, while
the liquid is being introduced from the other one, as pipe 48 to the duct 1, the
valve seat is provided with two ports 3 and 4, which communicate by a trans-
verse duct with the exhaust pipe 7, and the valve is provided with two concentric
chambers or grooves 13*, 14*, so located that when fluid is passing through the
port 811 into the port st, the duct will register with the ports 7 and 11, to
permit of the exhaust of the fluid from the port into the discharge pipe l, and
vice versa.
In order, however, that the head-stock or carriage may be fed slowly while the
tools are operating, I provide the limited operating volume which passes through
the regulator or escapement device and through the pipes m, m. The said
pipe m communicates by a duct in the valve casing, with a duct 26 which extends
through the trunnion in the valve and ends at a port in the lower face of the
valve. This port may be registered with ports m³, m in the valve-seat which
communicates by ducts m¹ and m³ with the ports or ducts and 8, respectively,
as iliustrated in Fig. 24. It will be seen by examining the last-mentioned figure
that the ports 81, h811, m² m³, 1711, and 71, are all located in a circle concentric
with the trunnion 1, and that the ports 81, h, are separated considerably further
than the ports m³ m', so that inasmuch as the ports 217 in the valve are dia-
metrically opposite, on swinging the valve lever to one side or the other, the port 217
will be caused to first register with one of the ports m³ m² before the port 2
can

page_text: register with the ports 1, s. Therefore in order to move the head-stock slowly,
the valve handle is turned at an angle of thirty degrees, at which time the
port will register with the port m³ or m³, and the fluid will flow through said
port and through one of the ducts mit or m into the pipes hs or h7, as the case
may be. Then in order to admit the high-pressure fluid into the cylinder, the
valve handle is turned to an angle of sixty degrees, so that the port registers
with the ports h or
The ducts or grooves and in the under surface of the valve are long enough
so that they will connect the ports 81, 81, or the ports, h, whether the
valve be turned to admit the limited volume fluid or high-pressure fluid, and con-
sequently, the fluid will be exhausted from the dead side of the cylinder at all
times when fluid is being admitted to the other side thereof.
The valve casing d and its parts, as I have previously stated, are so similar to
that at i and its parts that I have not illustrated them, the only difference between
the two being that whereas the pipes h, h8, lead from the valve casing i from
the end, the corresponding pipes, a3 for the carriage-feeding means lead into
the side of the casing d; but that is a mere matter of detail and will be easily
understood without further illustration.
Next referring to Figs. 16, 17 and 18, which illustrate a regulating or escape-
ment device for regulating the low-pressure or limited supply of Huid to the
carriage or head-stock-moving devices, it will be seen that provide a casing k
having therein a slide valve connected by a link with a crank pin , extend-
ing out from a disk on the end of the telescoping or extensible shaft e³, e, as
shown in Fig. 5.
The main supply-pipe leads into a chamber, in the valve casing on one side
of the valve, there being a similar chamber on the other side of said valve.
Extending inward from each of said chambers are ports, h, k, and 10, the
ports, registering with each other, and the ports 8, 10 also being in aline-
ment with each other.
The valve is provided with two transverse ports 1, 12, the former being
adapted to register with the ports 7, 9, and the latter being adapted to register
with the ports 8, 10, said ports 1, 2, being so located that when the valve is
at one extreme of its movement, fluid will enter one end of the chamber, and
when at the other extreme of its movement, fluid will enter the other end of said
chamber.
The pipe m which conveys the limited volume or low-pressure fluid to the
carriage or head-stock-moving cylinders enters the front of the casing, as shown
at ms, and communicates with a chamber or duct formed in the under-side of
the valve, said chamber or duct alternately connecting the ports, o, with the
port m8, substantially as an engine valve connects the ends of a cylinder with the
exhaust port.
The chamber is substantially cylindrical and in it is placed a loose piston k¹¹
which is driven from end to end of the chamber, as the valve is reciprocated.
Consequently only so much fluid can enter the exhaust duct m8, as is in front of
the piston each time it reciprocates, and hence the liquid is introduced into the
pipe m at a constant pressure and in a constant volume.
In order to vary the volume to increase or decrease the speed of the carriage or
head-stock, I provide a rack n, having a pin n' extending into the end of the
chamber to limit the movement of the piston. The rack is engaged by a partial
pinion on the end of a shaft 3 mounted in suitable bearings in the rear of
the frame e, and having a handle n', as shown in Figs. 3 and 11. Thus it will
be seen that it makes no difference at what pressure the fluid is delivered to the
regulating device, as it will flow therefrom in a predetermined volume, said
volume being increased or decreased at will by turning the shaft n³.
The working resistance varies in accordance with the particular work being
accomplished by the tools, the character of the stock being operated on, and other
conditions; and the pressure on the delivery side of the regulator accordingly

page_text: varies therewith. And, on the other hand, the pressure in the source of supply,
while always sufficient to operate the machine, is likely to vary for a number of
reasons. In spite of these variations, however, the regulator delivers a predeter-
mined volume of fluid to the cylinder, by reason of the fact that the valve is
operated at a certain rate of speed by the power devices, and hence the volume of
huid delivered by the regulator is constant, irrespective of the pressure on either
side thereof.
I specify in some of the appended claims that the tool" slide is controlled
by the regulator, but I desire to be understood as covering thereby a slide carry-
ing the work, or a fluid-operated slide in any other form of machine.
it is evident that by connecting the valve in the regulator with the power
devices by means of which the chuck or work-holder is rotated, a variation in speed
of rotation of the chuck is immediately followed by a proportional variation in the
feeding movement of the turret, as the fluid which is delivered to the turret feed-
ing means is proportional to the speed of rotation of the work.
in addition to these features which I have described, I provide means for
immediately locking the head-stock and the turret carriage against movement as
soon as, or slightly before, the feeding fluid is cut off from their respective
cylinders, so that there is no chance of a thrust of the work moving either the
carriage or the head-stock when the pressure is taken off the cylinder.
The clamp for the head-stock is best shown in Figs. 8 and 9. o represents a
cylinder having a piston o', which is held in inoperative position by a spring o²,
there being a pipe which supplies fluid to the cylinder to move the piston when-
ever desired. o, o, indicate toggle levers having their knuckle or inner ends
extending into a transverse aperture in the piston. The outer end of the lever o
bears against an adjusting screw o", while the outer end of the lever of bears against
a clamping block o, adapted to be thrust against a wearing strip 08 secured to the
traveling head-stock. When fluid is admitted through the pipe o³, to the
cylinder o, the piston straightens out the toggle levers and forces the clamping-
block of firmly against the wearing strip 08 on the head-stock so as to clamp it
firmly against movement.
The pipe 03 leads from the valve-casing, and communicates with a port o³, in
the valve-seat therein, said port o being so located that when the handle is in
neutral position, the port in the valve will register therewith so as to admit
fluid to the cylinder o. By reason of the size of the port 2, fluid will be admitted
to the port o before the feeding pressure is entirely cut off from the ports m³ m².
There is an exhaust port o10 which communicates with the duet 3, and when the
valve-lever or handle is thrown out of its neutral position, ducts o, o in said
valve will connect the ports 10, 0, so as to permit the escape of the fluid in the
cylinder o and allow the spring o² to return the piston to its normal inoperative
position.
A clamp for the turret carriage is illustrated in Figs. 12 to 15 inclusive, and
it does not differ from that which I have just described. It comprises a cylinder p,
a piston p¹, a spring p², toggle levers p, p, an adjusting screw p³, and a clamp-
ing block 6. The cylinder is secured to the carriage by screws 27, 28, so that
the clamping block will be forced upwardly against the under-cut shear a The
pipe which supplies fluid to the cylinder is indicated at p³, and it leads from the
valve casing d. The ports in the valve casing are substantially similar to those
described in the valve-casing so that turning the valve handle d to neutral
position permits the flow of liquid into the cylinder P, to clamp the carriage
against movement.
The exhaust pipes 1, 2, as I have previously said, leads into a reservoir in the
standard, and the liquid supply to said reservoir may be again utilized by with-
drawing it from the pipe q.
From the foregoing, it will be seen that I have provided a highly efficient
apparatus whereby I am enabled to perform upon the lathe a greater amount and
greater variety of work than heretofore. The controlling devices for causing

page_text: the travel of the carriage or head-stock are operated easily and without any effort,
the valve handle being so arranged that upon turning them in the direction of
desired movement of the carriage or head-stock, the latter will immediately move
in that direction; and when the carriage approaches the end of its movement, the
handle may be held stationary, and the continued travel of said carriage will shut
off the feed-supply. It will be understood that the regulator or escapement abso-
lutely regulates the flow of liquid so long as the pressure is greater on the supply
pipe than the resistance on the pipe m, but when the turret slide or carriage comes
to a standstill by reason of its being arrested by one of its stops, (not shown in
detail in this specification) then the regulator or escapement no longer supplies
the fluid, for the pressure in pipe m will be equal to that in pipe j. By providing
the transversely movable head-stock and means for feeding it, I am enabled to
introduce tools into the interior of the work and to employ a plurality of different
"back-facing" tools, to perform different kinds of work upon the stock on the
work-carriage.
The shear a³ is in a plane above the guide a, which latter is dropped far enough
to permit the passage of an inverted V-shaped shear protector not shewn on
drawings secured to the head-stock in such way as to cover the lower shear or
guide e, and the said head-stock is also cut-away as shown in Fig. 10. to permit
the passage of a protector r¹, for the shear a³. Hence cuttings and dirt cannot
drop upon the shears so as to cause undue friction when the sliding parts are in
movement.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is―
1. A turret lathe, comprising a bed, a turret adapted to receive a plurality of
tools and movable longitudinally on the bed, and a rotatable chuck or work-holder
movable transversely on the bed.
2. A turret lathe, comprising a bed, a tool-holding turret adapted to slide longi-
tudinally of the bed, transverse guides on said bed, and a rotatable chuck or work-
holder arranged to slide on said transverse guides.
3. A lathe, comprising a horizontally arranged bed having longitudinal guides,
and also transverse guides, a tool-holding turret movable on said longitudinal
guides, a rotary work-holder movable on said transverse guides and rotatable about
an axis longitudinal of said machine, and a power shaft arranged parallel to said
transverse guides for rotating said work-holder.
4. A lathe comprising a horizontally arranged bed having longitudinal guides,
and also transverse guides, a tool-holding turret movable on said longitudinal
guides, a head-stock movable on said transverse guides, and a rotary work-holder
on said slide rotatable on an axis parallel to the longitudinal guides.
5. A lathe, comprising a bed having longitudinal guides and transverse guides,
a tool-holding turret movable on said longitudinal guides, and a work-holder
movable on said transverse guides and rotatable on an axis parallel to the longi-
tudinal guides.
6. A lathe comprising a bed having longitudinal guides and transverse guides,
a tool-holding turret movable on said longitudinal guides, a work-holder movable
on said transverse guides and rotatable on an axis parallel to the longitudinal
guides, and fluid operated mechanism for moving said work-holder.
7. A lathe comprising a bed having longitudinal guides and transverse guides,
a tool-holding turret movable on said longitudinal guides. a work-holder movable
on said transverse guides and rotatable on an axis parallel to the longitudinal
guides, and power devices mounted on said bed and connected to said work-holder
to cause its rotation.
8. A lathe comprising a bed, a tool-holder, a frame on said bed having lateral
guides, a head-stock movable on said guides, a rotary work-holder journaled in

page_text: said head-stock and means including an extensible shaft for rotating said work-
holder.
.
9. A lathe comprising a bed, a tool-holding turret movable longitudinally of
said bed, a head-stock movable transversely of said bed, and a plate-shaped work-
holder mounted rotatably in said head-stock and journaled at its outer edges
therein.
10. A lathe comprising a bed, a turret movable longitudinally of said bed and
adapted to present a plurality of tools in succession to the work, stationary trans-
verse guides arranged in different horizontal planes extending across said bed, a
vertical plate-shaped head-stock mounted to slide on said guides, and a work-
holder journaled on said head-stock.
11. A lathe comprising a movable head-stock, a tool-holding turret journaled.
on said head-stock, a bed, and stationary transverse guides on said bed for said
head-stock, said guides being respectively above and below the axis of rotation
of said work-holder.
12. A lathe comprising a bed, a tool-holder movable longitudinally on said bed,
fluid-operated means for moving said tool-holder. a work-holder adapted to move
transversely of said bed, fluid-operated means for moving said tool-holder, and
devices for regulating the supply of fluid to both of said means.
13. A lathe comprising a bed. a tool-holder movable longitudinally on said bed,
fluid-operated means for moving said tool-holder, a work-holder adapted to move
transversely of said bed, fluid-operated means for moving said tool-holder, and a
common source of fluid supply for both of said means.
14. A lathe comprising a bed, a tool-holder movable longitudinally on said bed,
a work-holder movable transversely of said bed, fluid-operated means for moving
said work-holder. a source of fluid supply, and a valve for controlling the passage
of fluid from said source of supply to the said means.
15. A lathe comprising a bed, a tool-holder, a work-holder transversely movable
on said bed, fluid-operated means for moving the work-holder, and devices for
delivering different predetermined volumes of fluid to said means whereby the
work-holder may be moved at different speeds.
16. A lathe comprising a bed, a tool-holder movable longitudinally, a work-
holder transversely movable on said bed, fluid-operated means for moving said
work-holder, and stationarily mounted devices for controlling the passage of fluid
to said means.
17. A lathe comprising a bed, a tool-holder, a work-holder transversely movable
on said bed. fluid-operated means for moving said work-holder, a source of full-
volume-fluid supply, a regulator for delivering a limited-volume of liquid. and
devices for connecting the 'fluid-operated means with the source of full-volume
fluid supply or with the regulator."
18. A lathe comprising a bed, a tool-holder, a work-holder, movable transversely
on said bed, fluid-operated means for moving said work-holder, a source of full-
volume-fluid supply, a regulator for delivering a limited-volume of liquid, and a
valve arranged to deliver full-volume or limited-volume fluid to said means.
19. A lathe comprising a bed, a work-holder, a tool-holder movable on said bed.
fluid-operated means for moving said tool-holder, a source of full-volume fluid
supply, a regulator for delivering limited-volume fluid, and devices for connect-
ing the fluid-operated means directly with said source of supply or with said
regulator.
20. A lathe comprising a bed, a work-holder, a tool-holder movable on said bed.
fluid-operated means for moving said tool-holder, a source of full-volume fluid
supply, a regulator for delivering limited-volume fluid, and a valve arranged to
deliver full-volume or limited-volume fluid to said means.
21. A lathe comprising a bed, a tool-holder, a work-holder. one, at least, of said
holders being movable, fluid-operated means for moving said movable holder, and
devices for delivering a predetermined volume of fluid to said means regardless of
the resistance of the work.

page_text: 22. A lathe comprising a bed, having transverse guides, a tool-holder movable
longitudinally of the bed, a work-holder movable on said guides, belt-driven power
devices for rotating said work-holder, a piston and cylinder, one connected to the
bed and the other to the work-holder, and means for delivering fluid to said
cylinder on either side of said piston.
23. A lathe comprising a bed, a work-holder, a tool-holder movable on said bed,
fluid-operated means for moving said tool-holder, and devices located upon said
tool-holder for controlling the delivery of fluid to said fluid-operated means.
24. A lathe comprising a bed, a work-holder, a tool-holder movable on said
bed, fluid-operated means for moving said tool-holder, a valve for controlling the
delivery of fluid to said fluid-operated means, and a valve handle adapted to be
turned in the direction of desired movement to cause said tool-holder to move in
said direction.
25. A lathe comprising a bed a work-holder, a tool-holder movable on said
bed, fluid-operated means for moving said tool-holder, a valve for controlling the
delivery of fluid to said fluid-operated means, a valve located upon said work-holder
for controlling the delivery of fluid to said fluid-operated means, and a valve
handle adapted to be turned in the direction of desired movement to cause said
tool-holder to move in said direction.
26. A lathe comprising a bed, a tool-holder movable longitudinally on said
bed, a work-holder, means for moving said tool holder longitudinally, and a clamp
supplemental to said means for intermittingly locking the tool-holder against
such movement.
27. A lathe comprising a bed, a work-holder movable transversely on said bed,
a tool-holder longitudinally movable on said bed, means for moving said work-
holder, and a clamp supplemental to said means for intermittingly locking the
work-holder against such transverse movement.
28. A lathe comprising a support, a fluid-operated slide on said support, a fluid
operated clamp for said slide, and means for supplying fluid to the slide and clamp
alternately.
29. A lathe comprising a bed, a slide movable on said bed, a fluid-operated
clamp for said slide, and a valve arranged to deliver fluid to the said slide and
the said clamp.
30. A lathe comprising a support having guides, a slide movable on said guides,
a cylinder having a piston for moving said slide, a clamp for locking said slide to
the support, a cylinder having a piston adapted to actuate the clamp, and means
for supplying a pressure medium to the cylinders.
31. A lathe comprising a support, a slide movable on said support, a clamp
consisting of a toggle and a clamp block, and fluid-operated means for straighten-
ing said toggle to thrust the clamp block into operative position.
32. A lathe comprising a support, a slide, movable on said support, fluid
operated means for moving said slide, fluid-operated means for clamping said slide
against movement, devices for delivering full-volume fluid to said slide-operating
means, devices for delivering limited-volume fluid to said slide-operating means,
devices for delivering fluid to said clamping means, and a controllable mechanism
for permitting the passage of fluid alternately to the clamping means, and the
slide-operating means, said mechanism also permitting the passage of full-volume
or limited-volume fluid to the slide-operating means.
33. A lathe comprising a bed, a tool-holder slidable on said bed, and fluid-
operated means for clamping said tool-holder against movement.
34. A lathe comprising a bed. a tool-holder slidable on said bed, fluid-operated
means for moving said tool-holder, fluid-operated means for clamping said tool-
holder against movement, and a device for supplying fluid to said means alternately.
35. A lathe comprising a plurality of tool-holders arranged side by side, a bed
having guides, and a work-holder movable on said guides transversely of said
tool-holders and having an axial aperture to bring the rear of the work into
operative relation to any one of them.

page_text: 36. A lathe comprising a plurality of tool-holders and a rotatory work-holder
adapted to be brought to register with any one of said tool-holders, said work-
holder having an aperture to receive the said tool-holder to permit the tool to
operate upon the work.
37. A turret lathe comprising a bed, a turret movable longitudinally on said
bed, a plurality of supplemental tool-holders, and a work-holder arranged between
said movable turret and the supplemental tool-holders.
38. A lathe comprising a bed, a tool-holder movable on the bed, a plurality of
supplemental tool-holders, and a laterally movable rotatory work-holder arranged
between the movable tool-holder and the plurality of tool-holders, said tool-holder
having provisions for permitting the passage therethrough of any one of said
plurality of tool-holders.
39. A lathe comprising a bed, a plurality of parallel tool-holders, a rotatory
work-holder movable transversely of said tool-holders. means for moving said
work-holder, and means for moving said work-holders longitudinally into
operative position.
40. A lathe having a rotary chuck or work-holder, a slide, fluid-operated means
for moving said slide, and a means for delivering fluid to said fluid-operated
means, proportionally to the speed of rotation of said work-holder.
41. A lathe having power devices and a work holder or chuck driven thereby, a
slide, fluid-operated means for moving said slide, and a regulator operated con-
tinuously by said power devices for delivering fluid to said fluid-operating means,
said regulator being constructed and arranged to deliver a predetermined volume of
fluid irrespective of the net difference between the working resistance and the
pressure in the source of fluid supply.
42. A lathe having power devices, a slide, fluid-operated means for moving said
slide, and a regulator having a chamber or cylinder. and a piston controlled by
said power devices for delivering a predetermined volume of fluid irrespective of
the net difference between the working resistance and the pressure on the inlet
side of the regulator.
43. A lathe comprising a bed, a rotatory chuck or work carrier, a tool-holder
movable on said bed, fluid-operated means for moving said tool holder, automatic
mechanism for regulating the delivery of the fluid to said means, and connections
between the chuck or work-holder and said mechanism whereby the fluid is
delivered to said means proportionally to the speed of rotation of the chuck or
work-holder.
44. A lathe comprising a bed, a rotatory chuck or work-holder. a tool-holder
movable on said bed, fluid-operated means for moving said tool-holder, and an
automatic regulator interposed between the source of fluid supply and the fluid-
operated means, said regulator having a piston operated by the pressure in the
source of fluid supply.
45. A lathe comprising a bed, a rotatory chuck or work-holder, a tool holder
movable on said bed, fluid-operated means for moving said tool-holder, an auto-
matic regulator interposed between the source of fluid supply and the fluid operated
means, said regulator having a piston operated by the pressure in the source of
fluid supply, and means for conducting the fluid from said source of fluid supply
directly to said fluid-operated means or through said regulator.
1000
JAMES HARTNESS.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.