An Improved Turning and Drilling Lathe.
Year: 1896

page_text: Date of Application, 24th Nov., 1896-Accepted, 10th Apr.. 1897
COMPLETE SPECIFICATION.
An Improved Turning and Drilling Lathe.
I, WILLIAM WALLACE TUCKER, of 105 Huntington Street, in the City of
Hartford, County of Hartford and State of Connecticut, United States of
America, Contractor, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
This invention relates to a combined turning-and-drilling machine, and more
especially to that class of machines employed in the manufacture of bicycle-wheel
bub-blanks.
One object of my present invention is to furnish an improved machine of the
class specified, embodying automatic means whereby hub-blanks or other articles
may be turned down to an approximately-finished size and bored at one operation,
to thereby decrease the cost of manufacture by materially reducing the length of
time necessary to complete the turning and drilling operations, which operations
have heretofore been accomplished successively, the blank being first turned to
the proper size and subsequently drilled.
A further object of the invention is to provide, in operative relation with the
work-carrying spindle, in a machine of the class specified, and in position for
engaging the piece being operated upon, an improved steady-rest embodying
instrumentalities for engaging the piece being operated upon and also embodying
means for maintaining the rest in constant contact with the piece during the
turning operation; and to provide means, in connection with the cutter-slide and
steady-rest, for automatically retracting the piece engaging or bearing member of
the steady-rest simultaneously with the retractive movement of the cutter-slide.
A further object of the invention is to furnish, in connection with the operative
parts of the machine, improved means for supplying oil automatically to those
parts of the machine where it is necessary.
In the drawings accompanying and forming part of this specification,
Figure 1 is a plan view of a combined turning-and-drilling machine embodying
my improvements, a portion of one end of the machine being broken away, and
said figure showing the cutters and drill in operative relation with a hub-formative
rod or piece of stock, and in the position they occupy during the first stages in the
turning down and drilling operations.
Fig. 2 is a side elevation of the machine, as seen from the under side in Fig. 1,
a portion of the bed or framework of the machine being broken away.
Fig. 3 is a relatively large cross-sectional view of the machine, taken in dotted
line a-a, Fig. 2, and as seen from the left hand in said figure. This figure is
more especially intended to illustrate the construction, organization, and operation
of the steady-rest, which is shown partially in section, and the elements which
automatically control the feed-movements of the cutter-slides; and for convenience
certain irrelative parts of the machine are omitted. Fig. 4 is a similar cross-
sectional view of the machine, taken in dotted line b-b, Fig. 2, as seen from the
left hand. This figure is more especially intended to illustrate the construction,
organization and operation of those elements which automatically control the
feed-movements of the drilling mechanism; and for convenience certain parts of
the machine inessential to this operation are omitted in this figure.
Fig. 5 is a vertical longitudinal section, on a relatively large scale, as compared
with Fig. 2, of a portion of the machine, taken in dotted line c-c, Fig. 1.

page_text: Fig. 6 is a cross-sectional view of a portion of the bed of the machine, and shows
the preferred form of said steady-rest partially in section and in operative
connection therewith, and also shows one cutter-slide; a cutter carried thereby ;
a cutting-off tool, also carried by said slide; and a steady-rest actuator in
connection with said slide; and
Fig. 7 is a side view of the parts shown in Fig. 6, as seen from the right hand in
said figure.
Similar characters designate like parts in all the figures of the drawings.
In the form thereof shown in the drawings my improved combined turning-and-
drilling machine comprises in part a suitable framework; a rotative rod or work-
carrying spindle; a rotative drill-carrying spindle; independent driving mechanism
in operative connection with, and effective for rotating, the working-spindle and
drill-spindle in relatively opposite directions at predetermined relative velocities;
a cutter-carrying slide supported for movement in a plane transverse to the axial
line of the work-spindle; feed mechanism operatively connecting the cutter-slide
and drill-spindle and effective for simultaneously advancing and retracting the
cutter-slide and drill-spindle in relatively-intersecting planes; automatically-
operable means for controlling the feed-movements of the cutter-slide and drill-
spindle; a steady-rest in operative relation with the work-spindle and embodyiog
automatically-shiftable members.
The framework of the machine, which may be of any suitable construction for
carrying the several operative details, is shown similar in a general way to au
ordinary lathe-frame; and it preferably consists of a bed B, having the usual
longitudinal slideways 2 and 3 for directing the movements of certain parts.
Located at one end of the bed (shown in Figs. 1 and 2 as the right-hand end) is
the head-stock or spindle-carrying head H, in which is supported, for rotative
movement, the work or rod carrying spindle S, which may be driven from auy
suitable source of power (not shown) through the medium of the spindle-driving
mechanism, (designated in a general way by d²,) which spindle-driving mechanism
may be similar to the driving mechanism of a spindle of an ordinary lathe.
The turning-down mechanism as shown in the drawings comprises two oppositely-
disposed cutters C and C' mounted on cutter slides 6 and 7, one of which is located
at one side the longitudinal axis of the spindle, and the other of which is located
at the opposite side of said axis, and they are supported in suitable slideways
upon a slide-rest R, which, in turn, is supported upon the bed B of the machine,
said slides being adapted for simultaneous movement toward and from each other
in a plane intersecting the plane of the longitudinal axis of the work-carrying
spindle.
The means for advancing and retracting the slides simultaneously preferably
comprises a right-and-left-hand feed-screw F, which extends through right-and-left-
hand screw-threaded bearings 9 and 10 (shown in dotted lines in Fig. 3) on the
under side of, and central with relation to, the two slides 6 and 7, respectively,
said screw being rotatably supported at its ends in bearings formed in the upper
end of the slide-rest R and being provided with flanges 11 and 111 at the ends
adjacent to the inner faces of the end walls of the slide-rest, which flanges prevent
longitudinal movement of said screws.
Located on the bed B of the machine, at the end opposite to that upon which
the spindle-carrying head or head-stock H is located, is a tail-stock Ti having a
bearing at the outer end thereof in which is journaled a longitudinally-grooved
shaft 100, said shaft being furnished with pulleys p by means of which the same
may be rotated from any suitable source of power.
Supported in suitable slideways below the shaft 100 on the bed of the machine,
for movement in a plane longitudinally of the work-spindle, is a drill-spindle
carrier (designated in a general way by D ;) and rotatively supported in suitable
bearings on said carrier is a drill-carrying spindle, (desiguated in a general way
by K,) in the inner end of which is chucked a drill y', the axis of which is shown
in aligiment with the axis of the work-carrying spindle S.

page_text: As a means for rotating the drill-spindle and for facilitating a longitudinal
movement thereof during such rotation, said drill-spindle is shown furnished at
the outer end thereof with a spur-wheel 101, which meshes with a pinion 102,
splined to the drill-spindle-actuating shaft 100, which pinion is shown carried by a
leeve which is journaled in a bearing 1021 and surrounds the shaft 100 on the
drill-spindle carrier D', said sleeve being flanged to prevent longitudinal movement
thereof with relation to the bearing 102. This organization of drill-spindle
driving mechanism facilitates a movement of the drill-spindle carrier and connected
parts toward and away from the work-carrying spindle simultaneously with the
rotation of the drill-spindle K, through the medium of the shaft 100.
As a means for rotating the feed-screw F, to bring the cutters C and C', carried
by the cutter-slides 6 and 7 up to the work, I have provided an automatic feed
mechanism, which preferably consists of a horizontally-lisposed shaft 15, journaled in
suitable bearings upon the bed of the machine at one side thereof, as shown most
clearly in Figs. 23 and 4, and carrying a pinion 16', (shown in dotted lines in
Fig. 1) which meshes with a pinion 16 upon a shiftable-supporting worm-shaft 18,
which, in turn, carries a worm 19 in mesh with a worm-wheel 20, carried upon a
stud 21, secured to the slide-rest R, and which stud also carries a pinion 22 that
meshes with a gear-wheel 23, fixed to the outer end of the feed-screw F. This
shaft 15 may be driven in any suitable manner-as, for instance, through a driving
device d³ of gearing (see Fig. 2) intermediate to and connecting said shaft 15 to
the work-spindle driving mechanism d², by means of belt and pulley gear G.
The worm-shaft 18 is shown journaled at its ends in bearings formed in outwardly-
projecting arms of a bracket 18' which is supported for swinging movement upon
the shaft 15, said bracket being furnished at one end thereof with a shifting-
lever 25, (shown in full lines in Fig. 3) the free end of which is furnished with a
handle 26 by means of which the same may be operated by hand.
During the operation of the machine the shifting-lever 25 is locked in the
depressed position shown in Fig. 3 of the drawings, with the worm 19 in engage-
ment with the worm-wheel 20; and as a means for holding the worm up to its
working position in engagement with said worm-wheel, a locking-lever 27 is
provided, which is herein shown pivoted midway of its length upon the slide-rest,
with its lower end in normal engagement with a catch or lateral projection 28 upon
the inner face of the shifting-lever 25. The upper opposite end of the locking-
lever is located in the path of movement of a tripping device 29, carried upon one
of the tool-carrying slides, said locking-lever 27 being normally held with its lower
end in engagement with the catch upon the shifting-lever 25 by means of a spring 30,
connected at one end to said lever and at its opposite end to the slide-rest, as shown
most clearly in Figs. 3 and 4 of the drawings.
As a means for automatically throwing the shifting-lever 25 into position to
disengage the worm 19 of the wor-wheel 20, upon the release of the locking-
lever 27, I have provided a retracting spring 26', which is secured at one end to a
pin 26 upon the shifting-lever 25 and at its opposite end to a convenient portion
of the slide-rest R.
From the foregoing description of this mechanism, which may be consistently
termed the "automatic feed-controlling" mechanism, it will be seen that the feed-
movement of the cutter-slides may be readily limited, and that when said slides
have traversed this limited distance the tripping device 29-which is shown as a
screw adjustably carried in a screw-threaded bearing upon one of the cutter-slides
-engages the upper end of the locking-lever 27, throwing the same out of
engagement with the shifting-lever 2, which is immediately elevated, through
the medium of the spring 26', thus dropping the worm 19 out of engagement
with the worm-wheel 20 and immediately stopping the feed movement of the cutter-
slides.
In practice the feed-screw F will be provided at one end thereof with a hand-
wheel 12, by means of which the same may be turned to bring the cutters into
working positions.

page_text: In the form thereof herein shown the cutters C and C¹ for forming the hub-
blank are parti-circular in cross-section, each cutter being notched or cut away at
one side thereof, as shown at 33, to form a cutting-edge 34, the contour of said
cutting-edge coinciding with the contour of one-half of the wheel-hub being
formed. It will be obvious, however, that the construction of the cutters may be
varied to conform to any requirements. The two cutters will, in practice, be of
such construction and will be so set with relation to each other and with relation
to the rod or piece being operated upon as will enable them, by their co-opera-
tion, to form a complete hub-blank at one continuous cutting operation, one
cutter acting upon and forming one-half, and the opposite cutter acting upon and
forming the other half, of said blank, said cutters acting upon opposite sides and
at opposite ends, respectively, of the hub-forming portion of the blank, as will be
readily understood by a comparison of Figs. 1, 3, and 5 of the drawings.
The cutter-carrying slides 6 and 7 will preferably be enlarged at their adjacent
inner ends, as shown most clearly in Fig. 3, each slide having its enlarged end
bored transversely to receive the stem or shank 36' of the cutter being counter-
bored concentrically from one end, as shown in dotted lines in Fig. 3, to form a
bearing for the cutter-head at a point opposite the cutting-point of said cutter.
The shanks of the cutters C and C are extended through bores in the cutter-
carrying slides, the ends of said shanks being screw-threaded and secured in place
by means of nuts 38, screwed upon the screw-threaded nuts thereof and bearing
against the outer faces of said slides, clamping-bolts 39 being provided, which are
herein shown extended vertically through the cutter-carrying slides and bearing at
their lower ends against the shoes 40, (shown in dotted lines in Fig. 3,) which, in
turn, bear upon the shanks of the cutters and prevent accidental rotation thereof.
These cutters will usually be supported in their respective slides in such manner
that the inner adjacent ends thereof will slightly-overlap each other in a longi-
tudinal direction, so that each cutter will cut a fraction more than one-half of the
entire length of the hub-blank, the cutting-faces of the cutters (see Fig. 3) being
in substantial horizontal alignment and cutting in opposite directions.
As a convenient means for advancing the drill-spindle carrier D' and drill-
spindle K, carried thereby, the drill-spin lle carrier (see Fig. 5) is furnished with a
rack-bar 105 on the lower face thereof, which is engaged by the teeth of a
pinion 106, fixed to a shaft 107, journaled in suitable bearings in a block 107',
supported upon the bed B, and which shaft is provided at the outer end thereof
with a gear-wheel 108, which meshes with a pinion 108, journaled upon a
stud 109, fixed to the block 107 and having a hub on which is fixed a worm-
wheel 110, (see Fig. 4) which meshes with a worin 112 of a worm-shaft 113,
journaled in a bracket 114, supported for oscillatory movement upon a shaft 151,
(see Fig. 2) which, in turn, is journaled at opposite ends thereof in suitable
bearings 117 and 117 on the block 107'; and as a means for automatically shifting
the worm 112 into and out of engagement with the worm-wheel 110 the bracket 114
is furnished with a shifting-lever 118, which is similar in a general way to the
shitting-lever 25, herein before described in connection with the feed mechanism for
the cutter-slides 6 and 7. This shifting-lever 118 is normally locked in an
elevated position, for the purpose of maintaining an operative engagement between
the worm 112 and worm-wheel 110, by means, preferably, of a locking-lever 119,
pivotally carried at the outer end of said shifting-lever and having a lock-notch 120,
one wall of which normally engages a catch 121, fixed to the block 107' on which
the drill-spindle carrier is shiftably mounted.
As a means for tripping the locking-lever 119 at a predetermined point in the
advancing movement of the drill-spindle carrier D', I have provided a tripping
device, which, in the preferred form thereof shown most clearly in Figs. 2 and 4
of the drawings, comprises a tripping-pin 122, adjustably carried in a bracket 1221
at the rear end of the carrier D, and a renctionary tripping-rod 123, supported
in bearings on the block 107 and having, at the inner end thereof, a cam-face in
position to be engaged by the inner end of the tripping-pin 122. The outer end of

page_text: the rod 123 is normally located in position to engage and throw the locking-
lever 119 out of engagement with the catch 121 when said rod is shifted outwardly
by means of the tripping-pin 122. The rod 123 is returned to its normal position
by means of the spring 124, as will be readily understood by reference to Fig. 4 of
the drawings. The locking-lever 119 is normally retained in the locking position
shown in Fig. 4 by means of a spring 125, secured to the lower end of the shifting-
lever 118 and bearing against the lower end of the locking-lever 119.
For the purpose of actuating the feed mechanism of the drill-spindle carrier and
the feed mechanism of the cutter-slides in synchronism and at predetermined
relative velocities, so that the cutters C and C and the drill g' will complete their
respective operations at substantially the same time, these feed mechanisms are
operatively connected together, preferably by means of a so-called "time-train"
comprising a train of speed reducing gears (designated in a general way by G³)
intermediate to, and connecting, the shaft 15, which is the primary actuating factor
for the feed mechanism of the cutter-slides, and the shaft 15', which is the primary
actuator for the feed mechanism for the drill-spindle carrier D'.
Owing to the fact that a right-and-left-hand screw is provided for directly
imparting a feed-movement to the cutter-slides 6 and 7, and to the fact that a rack-
and-pinion is provided for directly imparting a feed-movement to the drill-spindle
carrier D', it will be seen that it is necessary to provide means intermediate the
rack-and-pinion of the drill-spindle carrier and the feed-screw of the cutter-slides
for regulating the feed-movements of the drill-spindle and cutter-slides, and for
this purpose I have shown the shaft 15 of the cutter-feed mechanism and the
shaft 15 of the drill-feed mechanism, connected together by a time train of speed-
reducing gears, the construction and organization of which will be such as to secure
the proper ratio of feed-movement between the cutters and drill. The two feed
mechanisms for the cutters and drill, respectively, and the connection between said
feed mechanisms constitute an actuating-connector between the cutter-carriers and
drill-carrier, which is effective, during the operation of the machine, for advancing
and retracting the cutters and drill in relatively-intersecting planes at comparative
velocities of a predetermined ratio, and said devices may be hereinafter briefly
referred to as the "actuating-connector "between the cutter-slide and drill-
spindle.
I do not desire to limit myself to the particular construction and organization of
the elements constituting the actuating-connector between the cutter slides and
drill-spindle as these may be variously modified without departure from this
invention.
For the purpose of supporting the drill in close proximity to the piece being
operated upon, and thereby prevent accidental flexure of the drill during the
operation, I have provided a drill rest or bearing 130, which is shown bolted to
the cutter-slide rest R, said drill rest or bearing being located, and supporting the
drill, at a point slightly in advance of the outer end of the piece W, being
operated upon.
The shalt 107, which carries the pinion 106, which meshes with the rack of the
drill-spindle carrier, is shown provided with a hand-wheel, by means of which
the same may be turned to advance or retract said carrier by hand.
Referring to Fig. 5 of the drawings, it will be seen that the drill g' is furnished
with oil-grooves 131, which extend longitudinally from the extreme end of the
shank of the drill through the centre of said drill and communicate with the peri-
phery thereof near the cutting-point; and for the purpose of supplying oil to said
drill the spindle K which is furnished with a suitable chuck 132 at the forward
end, has a central chamber 133 of slightly greater diameter than the diameter of
the drill-shank, and which chamber extends inward considerably beyond the end
of said drill-shank, and said spindle has a series of transverse perforations near the
inner end of the chamber 133, which communicate with the interior of a reservoir 134,
which surrounds this end of the spindle and is held as against longitudinal move-
ment upon the spindle, preferably by means of a pin 135, which extends through

page_text: the wall of the reservoir and has a bearing in an annular groove 136, formed in
the periphery of the spindle. In practice oil is supplied to the interior of the
reservoir through a conduit or feed-pipe 163, which leads to a pumping apparatus,
hereinafter described. This conduit also constitutes a means for holding the
reservoir against rotative movement with the spindle.
Packing-rings 137 and 137 are interposed between the periphery of the drill-
spindle and the annular reservoir, to prevent the escape of oil at the junction
of said parts.
During the operation of the machine the chamber 133 of the drill-spindle is kept
constantly filled with oil from the reservoir 134, which is supplied through the
conduit or feed-pipe 163, as hefore stated.
As a convenient means for holding the piece of work against vibratory movement
during the cutting or reducing operation, I have provided, in operative relation
with the work-carrying spindle S and the cutter of the machine, a reactionary
steady-rest, (designated in a general way by S',) which, in the preferred form
thereof shown in Figs. 3 and 6 of the drawings, comprises two co-operative
members 140 and 141, respectively, supported for longitudinal movement in
relatively transverse planes in suitable slideways formed in a steady-rest carrier or
bracket 142 and having wedge-faces 1401 and 141', respectively, in normal bearing
engagement with each other. One of said members, as 140, is located with its
longitudinal axis substantially radial to the axis of the work-carrying spindle and
has a work-engaging face 143 in position to engage the periphery of the piece
being operated upon, and this member will, for convenience, be termed the
"bearing" member; and the other member, which may be terined the "thrust "
member, as 141, is located with its longitudinal axis approximately at right angles
to the bearing member 140, and the inner inclined face of said thrust member is
normally retained in engagement with the inclined face of the bearing member by
means of a spring 144, which constitutes the means for maintaining the bearing
member in constant contact with the hub-blank during the cutting operation and
regulates the stress of said member. This spring is shown seated in a longitudinal
recess formed in the thrust member, and the tension of said spring is regulated by
a set-screw 145, against which the outer end of said spring bears, a set-screw being
shown adjustably seated in a nut 146, screwed into the outer eud of the
thrust-member bearing.
As a means for automatically retracting the bearing member 140 on the retractive
movement of the thrust member 141, a retracting-spring is provided, which has a
hearing at the lower end thereof in the carrier or bracket 142 and bears at its
upper end against a projection 147 on the upper end of said bearing member.
In some cases it is desirable to secure the steady-rest carrier or bracket 142 to
oue of the cutter-slides, as shown in Fig. 3, so as to have a movement with said
cutter-slide, and in other cases it is desirable to fixedly secure said bracket to the
frame of the machine, as shown in Figs. 6 and 7; therefore, I do not desire to
limit myself to any particular location of the steady-rest carrier or bracket upon
the machine, as this is wholly a matter of preference.
In Fig. 3 of the drawings, which shows the steady-rest carried by one of the
-cutter-slides, I have shown hand-operable means for retracting the thrust member
to release the bearing inember from engagement with the piece being operated
upon. This actuating means in the form shown in said figure comprises a pin 148,
fixed to the thrust member and extending through an elongated slot 149 in the
thrust-member bearing. For the purpose of locking the thrust member in its
retracted position, the slot 149 has a lateral extension at the outer end thereof.
into which the pin 148 may be turned when the thrust member is in its extreme
retracted position, the inner wall of the laterally-deflected slot forming a catch for
holding the thrust member against advancing movement. This constitutes a simple
and convenient means for retracting the thrust member by hand, and this means is
also shown in connection with the modification illustrated in Fig. 7.

page_text: In Figs. 6 and 7 of the drawings, I have shown the preferred construction and
organization of steady-rest and actuating means therefor. In these figures the
steady-rest carrier is shown fixed to the bed of the machine, and the cutter-slide
is shown furnished with a thrust-member actuator 150, having a cam-face 150' near
the upper end thereof in position to engage the pin 148 of the thrust member 141,
and which cam-face, during the retractive movement of the slide, engages said pin
and gradually retracts the thrust member, as will be readily understood by reference
to said Fig. 6.
In Figs. 6 and 7, it will be seen that the machine is furnished with one cutter-
slide instead of two, as illustrated in Fig. 3 of the drawings; and it will also he
seen that this cutter-slide is furnished at one end thereof with a turning-down
cutter, which is the same as the turning-down cutters shown in Fig. 3, and is also
shown furnished at the opposite end thereof with a tool-carrier 70, having a
cutting-off tool 70', which is located in position to engage and cut off the blank
after the cutting-tool C has completed the turning-down operation and said sli le
has been retracted to the position shown in dotted lines in Fig. 6, the inher
working end of the tool carrier 70 being supported in a bearing formed in one face
of the steady-rest bracket. The particular construction and organization of device
shown in Figs. 6 and 7 of the drawings is more especially adapted for use in
connection with ordinary lathes employed for turning and cutting-off small
cylindrical articles-such as bicycle-crank shafts and pulley-shafts, and other
similar articles; but it will be seen that the cutter-slide and steady-rest and
associated devices shown in Fig. 6 are readily applicable to the machine showa
in Figs. 1 to 5, inclusive.
In Fig. 1 of the drawings, the cutter 70' is shown pivotally supported upon one
of the cutter-slides, so that the same may be thrust backward during the operation
of the cutters C and C and may be dropped into position to cut off the completed
blank after the cutter-slides have been retracted.
As a convenient means for supplying oil in proper quantities to the cutters C
and C and to the reservoir 134, from which oil is conducted to the cutting end
of the drill, I have provided a pumping apparatus, which preferably comprises two
rotary pumps 155 and 156, located upon and driven both by the same shaft 157,
a belt 158i
which is furnished with a driving-pulley 158, and may be driven by
(shown in dotted lines Fig. 2) from any source of power (not shown ;) suction-
pipes 160 and 161, leading from the oil tank 162 to the pumps 155 and 156,
respectively; feed-pipes or conduits 163 und 164, the one 163 of which leads from
the pump 155 to the reservoir 134, carried ou the drill-spindle K, and the other
feed-pipe 164 of which leads from the pump 156 to a point above and between the
cutters C and C, respectively, this feed-pipe being closed at its outer end and
having a series of perforations through which oil is discharged upon the piece
being operated upon, as will be readily understood by reference to Fig. 2 of
the drawings.
The feed-pipes 163 and 164 are provided with cut-off valves (designated in a
general way by 166 and 167, respectively,) and are also provided with overflow-
pipes, (designated by 168 and 169, respectively). The pumps 155 and 156 may be
of any ordinary, rotary type-such as are commonly employed in connection with
metal working machines.
The operation of my improved machine will be readily understood by a comparison
of the several figures of the drawings, by any one skilled in the art to which this
invention appertains; and therefore a detailed description of such operation is
deemed unnecessary for the purposes of my present invention, it being sufficient to
say that the operations of turning down and drilling the piece are simultaneously
and automatically effected.
In forming hub-blanks on my improved machine it is preferable to use a
continuous rod which extends through the hollow work-carrying spindle and is held
therein by a suitable chuck in any well-known manner; but it will be obvious that

page_text: the machine is applicable for turning down hub-blanks or other analogous articles
which have been previously formed to approximate size in the usual manner of
forging articles of this kind.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is-
1. In a machine of the class specified, the combination with a work-spindle and
with rotating mechanism therefor; of a rotative drill-spindle and a cutter-slide
co-operatively connected together and supported for synchronous movement in
relatively transverse planes; an actuating-connector between and connecting said
drill-spindle and cutter-slide; and rotating mechanism in connection with the
drill-spindle.
2. In a machine of the class specified, the combination of a work-spindle a
rotative drill-spindle; a cutter-carrying slide supported intermediate said spindles,
for movement in a plane transverse to the axis of said spindles; means for rotating
the two spindles concurrently in relatively opposite directions; and means for
advancing the drill-spindle and cutter-slide concurrently in relatively-intersecting
planes.
3. In a machine of the class specified, the combination with a work-spindle and
with rotating mechanism therefor; of a rotative drill-spindle; a cutter-slide;
feed mechanism co-operatively connecting the drill-spindle and cutter-slide and
embodying means for simultaneously advancing and retracting the drill-spindle and
cutter-slide with relatively-varying volocities of a predetermined ratio and in
relatively transverse planes; and means for rotating the drill-spindle.
4. In a machine of the class specified, the combination with a rotative work-
spindle of a rotative drill-spindle located in axial alignment with the work-spindle;
independent driving devices in connection with the work-spindle and drill-spindle
and effective for rotating the two spindles in relatively opposite directions and at
relatively variable velocities; a cutter-slide supported for movement in a plane
transverse to the axis of and between the work-spindle and drill-spindle; and feed
mechanism co-operatively connecting the drill-spindle and cutter-slide and effective
for simultaneously advancing and retracting the said drill-spindle and cutter-slide
at predetermined relative velocities.
5. In a machine of the class specified, the combination with a work-spindle and
its carrier and with a drill-spindle and its carrier; of two oppositely-disposed
cutter-slides located at opposite sides, respectively, of the common axis of said
spindles; means for rotating the work-spindle; and feed mechanism operatively
connecting the two cutter-slides and the spindle-carrier and operable for simul-
taneously advancing the two cutter-slides toward the axis of the drill-spindle and
for simultaneously advancing the drill-spindle at a predetermined velocity with
relation to the velocity of the feed-movement of the cutter-slides.
6. In a machine of the class specified, the combination with a work-spindle and
its carrier and with a drill-spindle and its carrier; of two oppositely-disposed
cutter-slides located at opposite sides, respectively, of the common axis of said
spindles; means for rotating the work-spindle and drill-spindle concurrently in
opposite directions and at predetermined relative velocities; and feed mechanism
operatively connecting the two cutter-slides and the spindle-carrier and automatically
operative for simultaneously advancing the two cutter-slides toward the axis of
the drill-spindle and for simultaneously advancing the drill-spindle carrier at a
predetermined velocity with relation to the velocity of feed-movement of the
cutter-slides.
7. In a machine of the class specified, the combination with a work-spindle and
a drill-spindle and with independent driving mechanism in operative connection
with and adapted for rotating the work-spindle and drill-spindle in opposite
directions at relatively-varying velocities of a predetermined ratio; of two cutters
located at opposite sides, respectively, of the axis of the drill-spindle; cutter-

page_text: carrying slides on which said cutters are mounted; and feed mechanism operatively
connecting the drill-spindle and cutter-slides and effective for advancing the drill-
spindle and for simultaneously advancing the cutter-slides toward each other and
in a plane intersecting the axial line of the drill-spindle.
8. The combination with a suitable supporting-frame and with a rotative work-
spindle of two tool-carriers supported one for movement in the plane of the axis
of said spindle and the other for movement in a plane transversely of said axis;
and an actuating-connector between the two carriers and effective for advancing
and retracting the said carriers concurrently.
9. The combination with a suitable supporting-frame and with a rotative work-
spindle, of two tool-carriers supported one for movement in the plane of the axis
of said spindle and the other for movement in a plane transversely to said axis;
an actuating-connector between and effective for advancing and retracting the two
carriers concurrently; a tool-carrying spindle rotatively mounted upon one of said
carriers; and means for rotating said spindle simultaneously with the advancing
movement of the carrier.
10. The combination with a suitable supporting-frame and with a rotative work-
spindle, of two tool-carriers supported one for movement in the plane of the axis
of said spindle and the other for movement in a plane transversely of said axis;
an actuating-connector between and effective for advancing and retracting the two
carriers concurrently and embodying a time-train for effecting a predetermined
ratio of movement between said carriers; means in connection with each carrier
and operable for automatically stopping the advancing movement of said carriers
at predetermined points within the range limit thereof; a rotating tool carried by
one of said carriers; and means for rotating said tool throughout the advancing
movement of said carrier.
11. The combination with a suitable supporting-frame; of a spindle-carrier
supported on said frame, for movement longitudinally thereof; a tool-spindle
journaled in said carrier; means for advancing the carrier longitudinally of the
frame; a driving-shaft journaled on a fixture of said frame; a pair of gears
operatively connecting the driving-shaft and tool-carrying spindle, and one of
which gears is splined to, and adapted for movement longitudinally of, the driving-
shaft; and means for rotating the driving-shaft, whereby rotative movement is
imparted to the tool-spindle simultaneously with the longitudinal movement
thereof.
12. The combination with a suitable supporting-frame and with a rotative work-
spindle journaled in said frame, of two tool-carriers supported one for movement in
the plane of the axis of said spindle and the other for movement in a plane
transversely of said axis; an actuating-connector between and effective for
advancing and retracting the two carriers concurrently; a tool-spindle rotatably
mounted upon one of said carriers; driving mechanism for said tool-spindle,
embodying a driving-shaft journaled in a fixture of the frame; a gear-wheel splined
to the driving-shaft and movable longitudinally with the tool-spindle; and a gear
carried by the tool-spindle and meshing with the gear on the driving-shaft.
13. The combination with a suitable framework, of two tool-carriers supported
for advancing and retracting movements in relatively transverse planes; drop-
feed mechanism in connection with each tool-carrier; and a speed-reducing train
of gears operatively connecting the two drop-feed mechanisms.
14. In a machine of the class specified, the combination with a suitable frame-
work and with a rotative work-carrying spindle journaled in bearings on said
framework of two tool-carrying slides supported for movement in opposite
directions and in a plane transversely of the longitudinal axis of the work-spindle
and having, respectively, right-and-left-hand feed-screw bearings; a feed-screw
having right-and-left-hand threads in engagement with the right-and-left-hand
screw-threaded bearings of the tool-cutter carriers; a drill-spindle carrier supported
on the frame, for movement longitudinally thereof and having a rack; a feed-
shaft journaled transversely in the framework of the machine and having a pinion

page_text: in mesh with said rack; and connecting driving mechanism between the
rack, pinion-shaft, and feed-screw, and embodying means for rotating the
pinion-shaft and feed-screw at relatively-varying velocities of a predetermined
ratio.
15. The combination with a suitable support, of a tool-carrying spindle journaled
in said support and having an inclosed oil-chamber; a tool carried by said
spindle and having an oil-passage extending from the cutting end longitudinally of
said tool to, and cominunicating with, the oil-chamber of the spindle; means for
rotating said spindle; and means for supplying oil to the oil-chamber in said
spindle during the rotation thereof.
16. The combination with a suitable spindle-carrier; of a tool-carrying spindle
journaled in said carrier and having a transversely-perforated, central oil-chamber;
a tool carried by said spindle and having an oil-groove communicating with said
oil-chamber; a non-rotative oil-reservoir surrounding said spindle and com-
municating with the oil-chamber of said spindle; an oil-supply apparatus in
connection with the oil-reservoir and adapted for supplying oil to
said reservoir during the rotation of the spindle; and means for rotating said
spindle.
the
17. The combination with a suitable framework and with a rotative work-
carrying spindle journaled therein, of a tool-carrying slide supported for movement
in a plane transverse to the axis of the spindle; a turning-down tool supported on
said slide at one side the axis of said spindle; a cut-off tool supported upon said
slide at the opposite side of said axis; means for rotating the work-carrying
spindle; and means for advancing and retracting said slide, to bring the turning-
down and cutting-off tool alternately up to the work.
18. The combination with a suitable framework and with a rotative work-
carrying spindle journaled on said framework, of a tool-carrying slide supported
for movement in a plane transverse to the axis of the work-carrying spindle; two
oppositely-disposed cutting-tools supported at opposite ends, respectively, of said
slide, with their cutting-faces at opposite sides, respectively, of the axis of the
work-spindle; means for reciprocating said slide, to cause the tools to successively
act upon the work carried by the spindle; and a reactionary steady-rest supported
in position to engage the work carried by the spindle.
19. The combination with a suitable framework, a work-carrying spindle, and
with means for rotating said spindle; of a cutter-slide supported for movement in
a plane transverse to the axis of said spindle; a steady-rest supported in operative
relation with the work-carrying spindle and embodying two co-operative
reciprocatory members, one of which has a bearing-face for engaging the work
and the other of which constitutes a thrust member for normally holding the
first-mentioned member in engagement with the work; means carried by the
cutter-slide, for retracting the thrust member automatically upou the retractive
movement of the slide; means in connection with the bearing member, for
retracting the same upon the retractive movement of the thrust member; and
means for reciprocating the cutter-slide.
20. The herein-described steady-rest, it comprising a suitable frame having
angularly-disposed bearings whose axes are in relatively-intersecting planes; a
bearing member shiftably supported in one of said bearings and having an
inclined face normally intersecting the axis of the other bearing; a thrust
member shiftably supported in the other bearing and having an inclined
bearing-face in normal engagement with the bearing-face of the bearing member;
a spring in connection with the thrust member and effective for normally
thrusting said member against the bearing member; means for retracting the
thrust member; and means for retracting the bearing member simultaneously
with the retractive movement of the thrust member.
21. The herein-described steady-rest for a machine of the class specified, it
consisting of a suitable frame having two angularly-disposed bearings whose axes
are in relatively-intersecting planes; two co-operative members shiftably

page_text: supported in said bearings, and one of which members is actuated by the other in
one direction; and means in connection with the two members, for effecting a
simultaneous retracting movement of said members.
22. In a machine of the class specified, the combination with the framework
and with a rotative work-carrier; of a steady-rest supported in operative relation
with said work-carrier and comprising two co-operative spring-actuated members,
one of which constitutes a thrust member for imparting an advancing movement to
the other member; and means for retracting the thrust member.
23. In a machine of the class specified, the combination with the framework
and with a rotative work-carrier; of a steady-rest supported in operative relation
with said work-carrier and comprising a shiftably-supported, reactionary bearing
member; a thrust member supported with its lougitudinal axis in a plane inter-
secting the axial plane of the bearing member, and said two members having
coacting wedge-faces; a spring in operative connection with, and effective for
automatically advancing, the thrust member; and a tension device in connection
with the thrust member, for regulating the thrust of said member and the
bearing stress of the bearing member.
24. In a machine of the claes specified, the combination with the work-spindle,
the turning-down cutter, and the drill-spindle; of a compound oil-feeding
apparatus comprising two independent rotary pumps mounted upon the same
shaft; means for rotating said shafts; an oil-tank; two independent suction-pipes
leading from the oil-tank to the two pumps; two independent feed-pipes leading
one from oue pump to the drill-spindle and the other from the other pump to a
point above the turning-down cutter; and a valve-and-overflow pipe in connection
with each pipe.
اليوم
AD 1806
WILLIAM WALLACE TUCKER.
Haseltine, Lake & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.