Improvements in Machines for Boring and Facing Cylinders and the like.
Year: 1891

page_text: Date of Application, 17th Feb., 1891-Accepted 4th Apr., 1891
COMPLETE SPECIFICATION.
[Communicated from abroad by CHARLES CAMPBELL WORTHINGTON, of Irvington,
in the State of New York, United States of America, Mechanical Engineer.]
Improvements in Machines for Boring and Facing Cylinders
and the like.
I, HENRY EDWARD NEWTON, of the Office for Patents, 6, Bream's Buildings,
Chancery Lane, in the County of Middlesex, Patent Agent, 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 improvements in that class of cylinder boring machines
in which the work to be operated upon is strapped or otherwise secured to a carriage
having a sliding connection to the bed plate of the machine, upon which carriage
the work is fed as the boring progresses towards the boring cutters carried by
spindles mounted to revolve in a headstock at one end of the machine, said spindles
and carriage being connected usually to the same power shafting, and so timed in
their movements relatively to each other, as to secure the proper feed of the work
to the cutters. When, in these machines, provision is made for facing the edges of
the cylinder, the operation of facing must necessarily follow the boring operation,
and the method used consists of detachable cutter heads placed after the boring
operation is concluded in the boring spindles, from which the boring cutter heads
(which are also detachable) have been removed for the purpose. This substitution of
the facing cutter heads for the boring cutter heads, and vice versa, requires a readjust-
ment of the work to be faced or bored, and if both ends of the cylinder are to be
faced, a resetting of the cylinder is necessary. These adjustments of course entail
considerable labor, as they must be accurately made, and they also consume
considerable time.
It is the object of the present invention to simplify the construction of these
machines, and to provide an organization in which but one setting and adjustment
of the work and boring and facing cutters for all the operations will be required,
and which can be performed within the time ordinarily consumed in the setting and
adjustment of the same for one of the operations.
It is also the object of the present invention to provide a machine having an
increased accuracy and efficiency in adjustment and operation, over machines of
this class heretofore in use.
To these ends the invention, briefly stated, consists :-
First. In a headstock secured at one end of the machine in which are mounted a
plurality of spindles carrying the boring cutter heads, which receive their movement
through suitable connections from the main power shafting of the machine.
Second. A work-supporting platen or table having a revoluble and sliding con-
nection to the bed plate of the machine, and means for locking said table or platen
in adjusted positions during the operation of boring and facing.
Third. A movable headstock provided with a spindle or spindles carrying facing
cutters, and capable of simultaneous operation with the boring spindles, but upon
the opposite end of the work operated upon, so that the two operations of boring
and facing can be performed at the same time, and with a single adjustment of the
work and cutters.
Fourth. A facing spindle consisting of a hollow sleeve mounted to turn in its
headstock, and provided upon its interior with suitable bushings for receiving a bar
extending through the same connected to the boring spindle and carrying the cutter
head for supporting the latter, when the cylinder to be operated upon is of a length
exceeding the length of the overhanging portion of the spindle.

page_text: reversing the direction of the feed.
Feeding the facing cutters, and means IOT
As a full understanding of the improvements of the present invention can only
be had from a detailed description of the same, such description will now be given,
reference being had to the accompanying drawings, in which-
Figure 1 is a side elevation of a boring machine constructed according to the
present invention.
Figure 2 is a longitudinal sectional elevation of the same, illustrating more
particularly the construction and arrangement of the driving mechanism for
operating the spindles.
Figure 3 is a section of the same taken on the line 3 of Figure 2, and
Fig. 4 is a similar view taken on the irregular line 4 of Figure 2.
Figure 5 is a horizontal section on the line 5 of Figure 2, illustrating the con-
struction of the revolving platen for receiving the work to be operated upon.
Figure 6 is a view illustrating the feeding devices of the facing cutters.
Referring to said drawings, it will be seen that the machine therein illustrated is
provided with a headstock 1 and a pair of spindles 2 for the boring cutter heads 3.
and cutters 4, and with a headstock 5 and pair of spindles 6 and cutter heads 7 for
the facing cutters 8; these two boring and facing headstocks being arranged at
opposite ends of the machine. The headstock 1 is supported at the proper height
on legs or pedestals 9 bolted to the bed plate 10 in substantially the usual way.
is provided with a pair of spindles 2 journalled so as to revolve in the headstock 1,
as shewn, a suitable bushing, composed preferably of a brass sleeve 12, and a
ring 11 of soft metal, being interposed between the parts, to reduce the friction and
consequent wear.
of
It
In the machine illustrated in the drawing, two sets of boring and facing instru-
mentalities are illustrated. These two sets are provided for the purpose of doubling
the working capacity of the machine. Both sets, being, however, exact duplicates
in construction, a description of the one set will be sufficient for an understanding
of the two, and such description will now be given. Each spindle 2 is provided, at
its end overhanging the bed plate 10, with a tapered hole for receiving the corre-
spondingly shaped end of the cutter head 3, which is locked to the spindle by means
key 13.
The cutter head 3 is provided with the usual cutters 4, arranged at
suitable intervals in its face. The spindles and cutter heads receive their motion
through suitable connections with the power shafting. Those shown in the present
case consist of gears 14, one for each spindle 2, both of which mesh with a common
pinion 15 on a shaft 17, supported in bearings in the legs 9, and a bracket 18
extending from the machine, which shaft also carries a gear wheel 19 meshing with
a pinion 16 carried on the inner end of a shaft mounted in the bracket 18, and
having at its opposite end a pulley 20 which receives motion from the usual belt or
apron (not shewn). The mechanism just described constitutes the means provided
for the rotation of the spindles 2. It will be observed that the spindles are both
geared alike, and to a common shaft 17, and that as a result they are both driven
simultaneously and at a uniform speed.
Mounted on the bed plate 10, so as to be capable of sliding longitudinally thereon
to and from the headstock 1, is a carriage 21, having on each of its sides a flange 22,
engaging the edges of the bed plate, as shewn best in Figures 3 and 4.
The
carriage 21, at its end portion next the headstock 1, has mounted upon or formed
integrally with it, a plate 23, having a central annular opening 24, into which
projects a correspondingly shaped flange 25, formed in the underside of a platen or
table 26 for supporting the work to be operated upon, which, as shown in Fig. 1,
consists of an ordinary pumping engine cylinder C. The base of the table 20, as
shown in the present case, is circular in horizontal section (see Fig. 5), and is
provided with an annular groove 27, with which engage a series of nuts 28
oppositely arranged and screw threaded upon their interiors, for engagement with
the correspondingly threaded ends of rods 29 mounted in the plate 23. The ends
of each these rods are provided with right and left hand screw threads, so that

page_text: upon the turning of the rod both the nuts will be moved into or out of contact
with the groove 27. The purpose of these nuts is to securely hold the table to
the plate 23, against the tendency to rise during the cutting operation of the boring
cutter 4 upon the cylinder C.
It will be seen that the connection between the table 26 and the plate 23 is
such as to permit the rotation of the former upon the latter, when desired, so
as to permit the turning of the cylinder C from the position of parallelisin to
the spindles 2 in which it is shewn, to an angular position thereto, or end for
end.
Provision is made, in the present case, for preventing the rotation of the
platen or table 26, preferably at predetermined points in its rotation, consisting
of a series of openings 30 in the base of the table 26, and a pin 31 passing through
the plate 23, and held normally in a raised position by a spring 32 secured to the
carriage 21.
Means are also provided for the withdrawal of the pin from the
openings 30, consisting of a rod 33, capable of being slid horizontally on
the carriage 21 by means of a handle 34, the tapered end of the rod passing
thro' an opening in the lower end of the pin 31 (as shewn in Figures 2 and 3).
But four of these openings 30 are shewn in the present case, as ordinarily this
number will be found sufficient for all purposes, providing, as they do, for an end
for end movement, or a quarter turn in either direction, of the cylinder C and the
table 26, these four openings being so located that, upon the completion of a quarter
of a revolution of the platen or table, the spring-pressed pin 31, unless held depressed
by the rod 33, will enter the opening at the first quarter, and prevent the further
movement of the carriage. To permit a half turn of the table, the pin will be
held depressed until the opening at the first quarter has passed, the pin then
engaging with the opening at the next quarter. Any number of openings may be
employed for the purpose, so located so to lock the table against rotation in other
desired positions.
The carriage 21 is provided with means whereby, during the operation of the
boring of the spindles, it slides on the bed plate 10 toward the boring headstock 1.
The means provided in the present case consist of a rack 35, upon the underside
of the carriage, engaging a pinion 36 keyed to a shaft 37 journalled in the frame
of the machine, and transversely thereof, as shewn in Figure 3. The outer end of
the shaft 37 has keyed to it a sleeve 38 capable of a slight longitudinal move-
ment on said shaft, and provided with hand spokes 39 for the operation, by hand,
of the shaft 37 and pinion 36, to slide the carriage 21 to and from the headstock,
and thus bring the cylinder C into or out of position to be operated upon. The
shaft 37 has also loosely mounted on it a worm wheel 40, which is engaged by a
worm 41, carried on one end of a longitudinal shaft 42, journalled in the side of
the frame of the machine. The opposite end of the shaft 42 is connected by
gears 47, 48, 49, 50, with a shaft carrying a pulley 46 connected by a belt 44 and
pulley 45 to the shaft 17, which, as before explained, receives it motion from the
pulley 20.
The gears connecting the shaft 42 and pulley 46, are so proportioned relatively
to those connecting the spindles 2 to the pulley 20, as to secure a slow movement of
the carriage 21 towards the headstock 1, and a correspondingly slow feed of the
work to the cutters 4, relatively to the rotation of the spindles 2 in the usual
manner. The shafts 42, 27, when out of engagement, permit the shaft 37 to be
operated by hand, to move the carriage forward or backward to adjust the work
to proper position with relation to the cutters 4. The edges of the inner face of
the sleeve 38 are, as shewn, bevelled, and the outer face of the worm wheel 40 is
correspondingly recessed.
When the faces of the sleeve 38 and wheel 40 are out of contact, as shewn, the
sleeve and its shaft are not affected by the movement of the shaft 42. When, however,
it is desired to couple the shafts 37 and 42, and thus cause the carriage 21 to be
operated from the pulley 20, it can readily be done by bringing the adjacent faces
of the sleeve and worm wheel into frictional contact with each other, by turning a
screw 43 upon the end of the shaft, and forcing the sleeve 38 against the wheel 40,

page_text: when sufficient friction will exist between the two to couple the shafts 37 and 42,
when the movement of the latter will be communicated to the former, and, through
the rack 35 and pinion 36, slide the carriage 21 toward the boring headstock 1, and
feed the work upon the table to the cutters 4.
The operation. of the machine, as thus far described, is as follows:-The work to
be operated upon-consisting, as herein shewn, of the cylinder C of an ordinary
pumping engine is first properly adjusted and set in 'the usual manner upon the
table:26, which is prevented from revolving upon the plate 23 by the engagement
of the pin 31 with one of the openings 30 (as shown in Figures 1 and 3). By then
turning the rod 29 in the plates 23, the muts 28 are forced within the groove 27 in
the platen of the table 23, and tightened against the same, and caused to bind
against the side of the table with sufficient force to lock the table securely to
plate 23, and prevent it rising therefrom. The carriage 21, and with it the cylinder C
is then moved to or from the headstock 1, as the case may be, until the cylinder C
is properly presented to the cutters 4, this movement of the carriage being accom-
plished by turning the sleeve 38 (which is out of contact with the wheel 40), and
shaft 37 and pinion 36, which latter, engaging the ratchet 35 will move the carriage
back or forth, as before explained. The shafts 37 and 42 being then coupled as
before explained, and the spindles 2 and cutters 4 being set in operation, the shaft 37
and its pinion will, through the connections before described, be correspondingly
rotated, but at a slower rate of speed, and caused to advance the carriage 21 and
the cylinder C toward the headstock as the boring continues. The carriage 21 will
continue to advance as long as the spindles operate, and while the shafts 37 and 42
remain coupled. When it is desired to stop the movement of the carriage by the
power shafting, it can be readily done by loosening the screw 43 upon the shaft 37,
when the friction between the sleeve 38, and worm wheel 40 being removed, the
shafts 37 and 42 will be uncoupled. The carriage 21 can then be moved in either
direction, as desired, by the hand of the operator.
The shaft 42 is split in the usual way to provide for the breaking of the connection
between the power shafting and the driving mechanism of the sliding carriage 21,
when desired. The means provided in the present machine for making and breaking
this connection, consist of an ordinary hand wheel 75, by turning which in one
direction, the adjoining ends of the shaft 42 are united the wheel 75, upon being
turned in the opposite direction, disuniting the ends.
If it is desired to adjust the cylinder C so as to have the cutters operate at right
angles to its axis, the rods 29 will be turned in the proper direction to loosen the
screws 28, and the rod 33 shoved forward so as to withdraw the pin 31 from the
opening 30, with which it is then in engagement. The table 26 then being turned
to the right or left, as the case may be, upon the completion of a quarter turn of
the same, the pin 31 will enter the next of the series of openings 30, when the
cylinder will be in a position at right angles to its former position. The rods 29
being then turned so as to tighten the nuts 28 about the table 26, the cylinder C
will be ready for adjustment to or from the cutters by means of the handwheel
or sleeve 38 in the manner just described.
To turn the cylinder end for end, the table 26 will be given a half turn, the
pin 31 passing one of the openings 30, and entering the next of the series of
openings.
If desired, the work may be fed to the cutters 4, as the boring progresses, by
operating the shaft 37 and its pinion 36 by hand, the connections with the power
shafting being thus dispensed with. It will be preferable, however, to have the
work fed to the cutters from the power shafting, as described, as the feed in that case
will be more uniform.
Referring now particularly to Figures 1, 2, and 4, the construction and arrange-
ment of the facing mechanism will be described. The facing headstock 5 is mounted
upon the carriage 21, its base being dovetailed in the carriage, so as to be adapted
to slide thereon to and from the cylinder C. The carriage 21 is provided with a
rack 50, along which travels a pinion 51 mounted on the end of a shaft 52 jourualled

page_text: in the base of the headstock 5, the opposite end of said shaft being provided with
hand spokes 53, by which it is turned, to cause the headstock 5 to move back and
forth on the carriage for the positioning of its cutters 8 out of or into contact with
the cylinder C. It will thus be seen that the headstock 5, being mounted on the
carriage 21, has a movement therewith during the feed of the cylinder to the boring
cutters 4, so as to retain its operative position with relation to the cylinder, and
has also a movement thereon independent thereof, for adjustment with relation to
cylinders varying in length.
The headstock 5 is also provided with means by which it is locked to the carriage 21
after adjustment into or out of operative position with relation to the work to be
operated upon. The means illustrated in the present case consist of bolts 80
passing through the base of the headstock, and entering a sliding block 81 (see
Figure 4). During the adjustment of the headstock 5, the bolts 80 will be loosened,
so as to permit the block 81 to be slid along the table 21, but when the headstock
has been adjusted to proper position with relation to the work to be operated upon,
it will be held therein by tightening the bolts 80, thus causing the block 81 to
bind against the inclined edge of the table 21.
The headstock 5 is provided with a pair of hollow spindles 6, each mounted to
turn in a sleeve 54, interposed between the headstock and the spindle 6, to lessen
the wear of the parts. Each of the spindles is provided at its inner end with a cutter
head 7, having a screw threaded connection to the spindle (though the connection
may
he any other), so as to revolve with the spindle. The cutter head 7 is provided,
in its outer face, with a vertical channel 55, in which is located a sliding block 56,
having a vertical screw-threaded opening, with which engages a feeding screw 57,
mounted in a lug or projection 58 in the upper end of the cutter head 7, (as
best shown in Figure 2). The facing cutter 8 is carried in one end of a bolt 59,
which passes through the slide 56, and is provided at its other end with a tightening
mut 60.
The spindles 6 receive their motion through connections similar to those of the
boring spindles 2, consisting of gears 14" (one for each spindle 6), meshing with a
common pinion 15", keyed to a shaft 17", connected by gear 19" and pinion 16" with
the shaft of a pulley 20, corresponding to that numbered 20 at the other end of the
machine. The several gears at both ends of the machine are of equal diameter
respectively, and the pulleys 20, 20" being driven at the same speed, it follows that
the facing and boring spindles are driven at the same, or substantially the same,
speed of rotation. The two sets of spindles, however, being driven independently of
each other, it follows that either set may be thrown out of operation without affecting
the movement of the other.
The operation of the facing cutters will now be described:-The cylinder C,
having been adjusted to proper position with relation to the boring cutters 4, as
before described (the facing headstock moving with the carriage 21 in this adjust-
ment), the facing cutter 8 will be brought into contact with the opposite end of the
cylinder C by the forward movement of its headstock upon the carriage, the shaft
and pinion 52, 51 being turned by hand, as before described. This may be done
either during the rotation of the facing spindles 6, or before movement has been
imparted to them. With the facing cutters 8 thus positioned upon, and locked by
means of bolts 80, movement being imparted to the pulleys 20 20, the spindles 26
will both be rotated, and the two operations of boring and facing performed simul-
taneously, but at opposite ends of the cylinder. When the respective ends have
been bored and faced, the cylinder C will be turned end for cnd in the manner
before described, and the operations repeated upon the opposite ends of the
cylinder, unless the boring operation has been completed in the first instance, in
which case the facing operation alone will be performed upon the opposite end of
the cylinder.
It should be noted that the gear 19" is feathered or splined to the shaft 17,
which is extended as shewn, and which is itself loose within its bearings in the
bracket 18 the gear 19" being thus capable of longitudinal movement on its shaft,

page_text: and the latter capable of longitudinal movement in its bearings, thus permitting
the backward & forward movement of the headstock 5 with the carriage 21, and
independently thereof, without disconnection from its driving mechanism.”
The boring and facing spindles, instead of having independent power mechanisms,
as described, may, if desired, be driven from a common power mechanism, the
boring and facing spindles being preferably, in such case, provided with belt
shifters or other suitable devices for bringing either or both into, or throwing them
out of operation, when desired.
Provision is made in the present machine for the feeding of the cutters 8, during
the rotation of their spindles, to different positions with relation to the work operated
upon, the mechanism for this purpose shewn in the drawings providing for three
different feeds of these cutters, and in either of two directions. This mechanism
consists of a series of feeders or pins 61, 62, 63, for each of the cutters, mounted in
the outer end of an upwardly extending arm 64, secured to the head stock 5 (see
Figure 1). These feeders or pins are. held normally in their raised positions by
springs 65, and are brought to their depressed position, for contact with projections
or points 66 formed upon the heads of the screws 57, by an adjuster so positioned
as to engage the feeders or pins 61 etc., of each cutter feeding device, which are
thus rendered simultaneously adjustable, the movement of the adjuster simultaneously
moving the different feeders into or out of position for engaging and operating
their respective feeding devices. As shewn in the drawings, this adjuster (see
Figures 4 and 6) consists of a sliding rod 68, common to both sets of feeders or
pins 61 etc., having cams 67 engaging shoulders formed in the feeders or pins. The
rod 68 slides between guides 69 on the arm 64, in which it is held by a plate 70. It
is to be understood, however, that the present invention includes broadly any other
form of adjuster performing the function of simultaneously adjusting a plurality of
feeding devices.
The feeding operation is as follows:-Suppose the parts to be in the positions in
which they are shown in Figure 4, with the pin 61 of each series depressed for
engagement with the points 66 on the heads of their respective screws 57, the
spindles 6 moving in the direction of the arrow in said figure. As each spindle 6
and cutter 8 complete a revolution, and the cutter approaches the position in which
it is shown in Figure 4, one of the points 66 on the head of the screw 57 is engaged
by the pin 61, in passing which, the screw is turned so as to raise the slide 56 and
cutter 8 slightly, and the latter, in its next revolution, is caused to describe a circle
having a diameter slightly in excess of that described in its previous revolution.
This feed will continue until the facing operation is completed, or until the pin 61
is raised. To increase the feed two of the pins (61, 62,) will be depressed, when the
screw will be turned twice the distance; and by depressing the three pins 61, 62, 63,
this distance is trebled.
pro-
To provide for the downward feed of the cutters 8, each of the arms 64 is
vided with a slot 71 in its base, in which is located a set screw 72, by which the arm
is secured to the headstock 5. By loosening this screw, the arm 64 may be moved
outward, so that its pins will engage the points 66 upon the opposite side of the axis
of the nut 57, when the nut and cutter will be moved in a direction contrary to that
just described, i.e., in a downward direction.
Each of the spindles 6 is provided at each end, upon its interior, with a bushing 73
of soft metal or other suitable substance, for receiving and supporting the rear end
of a rod 74 for supporting the boring cutter head, when operating upon a cylinder
the length of which exceeds that of the overhanging portion of its spindle 2. The
forward end of this rod is keyed or otherwise connected to the boring spindle as
shewn in Figure 2, & is provided with a spline or feather 76, engaging a corre-
spondingly shaped recess upon the interior of the cutter head 3, along which the
cutter head 3 can be moved for adjustment with relation to work to be operated
upon, & by which it is held from rotation upon the rod 74. The cutter head 3 is
also provided with set screws 82, for locking the cutter head to the rod 76, after
the same has been adjusted to desired positions.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me from
abroad, I declare that what I claim is :-
1. The combination, in a boring machine, of a movable table, a stationary head-.
stock at one end of the machine, having one or more boring spindles, cutter heads
and cutters, a moveable headstock at the opposite end of the machine, having a
corresponding number of facing spindles, cutter heads, and cutters, mechanism for
driving said boring and facing spindles, and mechanism for advancing said table
and movable headstock toward the boring spindle or spindles, substantially as.
described.
2. The combination, in a boring machine, of a sliding work-supporting carriage,,
and a sliding facing headstock and spindle, said headstock having a movement with
said carriage, as the latter moves, substantially as described.
3. The combination, in a boring machine, of a sliding work-supporting carriage
and a sliding facing headstock having a movement with said carriage as the latter
moves, and having also a movement independently thereof, for the adjustment of its.
spindle to or from the work, substantially as described.
4. The combination, in a boring machine, of a stationary boring headstock and
spindle, a movable facing headstock and spindle, cutters for both of said spindles, a.
work-supporting table between said spindles, driving mechanism for each of said
spindles, and mechanism for advancing said table and facing headstock simul-.
taneously toward the boring spindle, as the boring operation progresses, substantially
as described.
5. The combination, in a boring machine, of a stationary boring headstock and
spindle, a movable facing headstock and spindle, cutters for both of said spindles, a
work-supporting table between said spindles, means for adjusting said table with.
relation to said boring spindle, means for adjusting said facing spindle with relation
to said table, means for rotating said spindles, and mechanism for advancing said
table and facing headstock simultaneously toward the boring spindle as the boring-
operation progresses, substantially as described.
6. The combination, in a boring machine, of a stationary headstock and boring
spindle, a work-supporting carriage having a sliding connection to the bed plate of
the machine, a facing headstock and spindle carried by said carriage, and means for
rotating said boring and facing spindles, substantially as described.
7. The combination, in a boring machine, of a stationary headstock and boring
spindle, and means for rotating said spindle, a work-supporting carriage having a
sliding connection to the bed plate of the machine, a facing headstock and spindle
carried by, but adjustable on, said carriage, and means for rotating said boring and
facing spindles, substantially as described.
8. The combination, in a boring machine of a work-supporting table and a facing
headstock provided with a plurality of spindles operating simultaneously, said
headstock having a sliding connection to the frame of the machine, whereby all of
its spindles are simultaneously adjusted to or from the work, substantially as
described.
9. The combination, in a boring machine, of a sliding work-supporting table, and a
sliding facing headstock provided with a plurality of spindles operating simul-
taneously, said headstock having a movement with said table as the latter moves,.
and also a movement independently thereof, whereby all of its spindles are
simultaneously adjusted to or from the work, substantially as described."
10. The combination, in a boring machine, of a sliding work-supporting carriage
and a facing headstock mounted thereon, so as to move therewith, said headstock
being provided with a plurality of facing spindles operating simultaneously, and
having a sliding connection to said carriage, whereby all of its spindles are
simultaneously adjusted to or from the work, substantially as described.
11. The combination, in a boring machine, of a boring headstock, a carriage (21)
having a sliding connection to the bed plate of the machine, a facing headstock and

page_text: its spindle having a sliding connection to said carriage, means for adjusting said
carriage and facing headstock simultaneously;. and means for adjusting: said
headstock independently of said carriage substantially, as described.
-12. The combination, in a boring machine, of a boring headstock, a carriage (21)
having, a sliding connection to the bed. plate. of the machine, the work-supporting
platen 26, capable of rotating on said carriage, a facing headstock and its spindle
having a sliding connection to said carriage, means for adjusting said carriage
and facing headstock simultaneously, and means for adjusting said headstock
independently of said carriage, substantially as described.
13. The combination, in a boring machine, with a boring spindle & cutters, of the
carriage 21, having a sliding connection to the bed plate thereof, the platen 26
capable of rotating on said carriage, means for locking said platen to the carriage,
and means for advancing said carriage and platen towards the boring spindle to feed
the work as the boring operation progresses, substantially as described.
14. The combination, in a boring machine, of a work-supporting table, consisting
of two members, one of which is rotatable with relation to the other, openings at
predetermined points in one member and a spring-pressed pin in the other member
for entering said openings, to automatically arrest the rotation of the first named'
member, substantially as described.
15. The combination, in a boring machine, of a work-supporting table, consisting
of two members, one of which is rotatable with relation to the other, openings at
predetermined points in one member, a spring pressed pin in the other member for
entering said openings, to automatically arrest the rotation of the first named
member, and a rod 33 for withdrawing said pin from the openings, to permit the
rotation of the revoluble member substantially as described.
16. The combination, in a boring machine, of a table and a work-supporting
platen capable of rotating thereon, openings 30 at predetermined points in one
member, and a spring-pressed pin 31 in the other member for entering said
openings, to automatically arrest the rotation of the platen, substantially as
described.
17. The combination, in a boring machine, of a table and a work-supporting
platen capable of rotating thereon, openings 30 at predetermined points in one
member, a spring-pressed pin 31 in the other member for entering said openings,
to automatically arrest the rotation of the platen, and a rod 33 for withdrawing
said pin from the openings, to permit the rotation of the platen, substantially as
described.
18. The combination, in a boring machine, of a boring spindle and its cutter,
the rotating work-supporting platen 26, screw-threaded rods 29, and nuts 28 carried
by said rods, for locking said platen to its rest, substantially as described.
19. The combination, in a boring machine, with a plurality of facing cutters and
feeding devices therefor, of an adjuster, and connections between said adjuster
and feeding devices, whereby, upon the movement of said adjuster, the different
feeding devices are simultaneously thrown into or out of operation, substantially as
described.
20. The combination, in a boring machine, with a plurality of facing cutters and
feeding devices therefor, of an adjuster, and connections between said adjuster and
feeding devices, whereby, upon the movement of said adjuster, the extent of feed
of the different cutters is simultaneously adjusted, substantially as described.
21. The combination, in a boring machine, with a plurality of facing cutters and
feeding devices therefor, of a plurality of feeders for each of said feeding devices,
for engaging and operating the same, and an adjuster engaging the different
feeders, whereby, upon the movement of said adjuster, two or more of the feeders
of each cutter are simultaneously adjusted to position, to vary the extent of feed
of the cutters, substantially as described.
22. The combination, in a boring machine, with a facing cutter and feeding
device therefor, of a plurality of feeders for said feeding device, and an adjuster
engaging the different feeders, whereby, upon the movement of said adjuster, two

page_text: or more of said feeders are simultaneously adjusted to position, to vary the extent
of the feed of the cutter, substantially as described.
23. The combination, in a boring machine, with a facing cutter and feeding
device therefor, of a feeder for engaging and operating said feeding device, said
feeder being adjustable to different positions with relation to said feeding device,
to reverse the direction of feed of the cutter, substantially as described.
24. The combination, in a boring machine, with a plurality of rotating facing
spindles, and cutters and feeding devices therefor, of an adjuster, and connections
between said adjuster and feeding devices, whereby, upon the movement of said
adjuster, the different feeding devices are simultaneously thrown into or out of
operation, substantially as described.
25. The combination, in a boring machine, with a plurality of rotating facing
spindles and cutters, and feeding devices therefor, of an adjuster, and connections
between said adjuster and feeding devices, whereby, upon the movement of said
adjuster, the extent of feed of the different feeding devices is simultaneously
adjusted, substantially as described.
26. The combination, in a boring machine, with a plurality of facing spindles
and cutters, and feeding devices therefor, of a plurality of feeders for each of said
feeding devices, for engaging and operating the same, and an adjuster engaging the
different feeders, whereby, upon the movement of said adjuster, two or more of the
feeders of each cutter are simultaneously adjusted to position, to vary the extent
of feed of the cutters, substantially as described.
27. The combination, in a boring machine, with a rotating facing spindle and its
cutter. and feeding devices therefor, of a plurality of feeders for engaging and
operating said feeding device, and an adjuster engaging the different feeders,
whereby, upon the movement of said adjuster, two or more of said feeders are
simultaneously adjusted to position, to vary the extent of feed of the cutter,
substantially as described.
28. The combination, in a boring machine, with a plurality of rotating facing
spindles and cutters, and feeding devices therefor, of a feeder for each of said
feeding devices, for engaging and operating the same, and a cam rod engaging the
different feeders, whereby, upon the movement of said rod, the feeders of the
different feeding devices are simultaneously adjusted to or out of operative position,
substantially as described.
29. The combination, in a boring machine, with a plurality of rotating facing
spindles and cutters, and feeding devices therefor, of a plurality of feeders for
each of said feeding devices, for engaging and operating the same, and a cam rod
engaging the different feeders, whereby, upon the movement of said rod, two or
more of the feeders of each of said feeding devices are simultaneously adjusted to
position, to vary the extent of feed of the cutters, substantially as described.
30. The combination, in a boring machine, with a rotating facing spindle and its
cutter and feeding devices, of a feeder for engaging and operating said feeding
devices, said feeder being adjustable to different positions with relation to said
feeding devices, to reverse the direction of feed of the cutter, substantially as
described.
31. The combination with a rotary cutter head and headstock, of the cutter 8,
slide 56, and feeding screw 57, one or more pins 61 &c., and means for moving said
pin or pins into or out of position for engagement with the head of the screw,
substantially as described.
32. The combination, with a rotary head and headstock, of the cutter 8, slide 56,
and feeding screw 57, one or more pins 61 &c., and a cam-faced sliding rod for
moving said pin or pins into or out of position for engagement with the head of the
screw, substantially as described.
33. The combination with the cutter carrying screw 57, of the pin carrying
arm 64, said arm being adjustable to opposite sides of the axis of rotation of the
screw, so as to change the direction of movement of said screw and its cutter,
substantially as described.

page_text: 34. The combination, in a boring machine, of a boring spindle at one end
thereof, a facing spindle at the opposite end, consisting of a hollow sleeve (6)
rotating in its headstock, a removable rod (74) passing through said sleeve, and
adapted to be connected to and form an extension of the boring spindle, and a
boring tool adapted to be moved along said rod, and to be keyed thereto in adjusted
positions, for operating upon cylinders of varying lengths, substantially as
described.
Dated this 17th day of February 1891
NEWTON & SON,
Agents for the Applicant.