Roll Turning Machine.
Year: 1894

page_text: COMPLETE
SPECIFICATION.
Roll Turning Machine.
I, GEORGE VINE, of 217 Wakelee A venue, Ansonia, Connecticut, United States
of America, Machinist, 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 :—
My invention has for its object to improve the construction of roll turning
machines so that the quality of work shall be greatly improved and the capacity
of the machine shall be increased. This accomplish by so organizing and
constructing the machine that the cutters will be held rigidly at all times without
strain upon the roll, thereby insuring that the line of the cut upou the roll will be
perfectly straight and uniform, the use of duplicate sets of cutters if required is
provided for, likewise a uniform automatic feed for the sets of cutters in addition to
a hand feed for each set of cutters.
With these ends in view I have devised the novel mechanism of which the
following description in connection with the accompanying drawings is a specifi-
cation, numbers being used to designate the several parts.
Fig. 1 is a plan view illustrating the carriages for a single set of cutters in
operative position.
Fig. 2 an end elevation corresponding therewith.
Fig. 3 a section on the line x, x, in Fig. 1 looking toward the right, 'and
Fig. 4 a section on the line y, y, in Fig. 3 looking down.
1 denotes a bed which may be of ordinary or any preferred construction,
2 standards adjustably clamped to the bed by which the roll 3 that is to be operated
upon is supported. Any suitable mechanism may be used for imparting rotary
motion to the roll. As this mechanism forms no portion of my present invention it
has been omitted from the drawings for the sake of clearness. 4 denotes a table
which is adapted to be moved longitudinally upon the bed and which is rigidly
secured thereto after adjustment by bolts 5. This table is provided with a central
longitudinal groove 6 to receive ribs 7 on carriages 8 which are adapted to be moved
longitudinally on the table, that is transversely to the bed. The special design of
the carriages is not of the essence of my invention. They are adapted to be moved
in or out upon the table in adjusting the machine to different sizes of folls, and
after adjustment are rigidly secured to the table by bolts 9. The essential
requirements are that each carriage be provided with a rest 10 for a cutter '11 and
with standards 12 which extend upward above the rests and are provided with
sockets 13 which receive transverse strengthening rods 14. The ends of these rods
are threaded and are provided with nuts 15 which are adapted to be turned up
against the opposite sides of the standards as clearly shown in Fig. 1. These
sockets and strengthening rods constitute in connection with bolts 9 an important
feature of my invention for the reason that they make the carriages rigid relatively
to each other as well as to the table. In placing a roll in the machine to be
operated upon the strengthening rods 14 are of course removed 'and 'bolts '9 are
loosened. This permits the carriages to be moved in or out. After the carriages
have been adjusted their bases are locked rigidly to the table by bolts 9 after which
rods 14 are placed in the sockets and the parts are made rigid by tightening up
outs 15 on opposite sides of the standards. It will thus be seen that springing of
the parts is rendered practically impossible. 16 denotes blocks which rest on the
cutters and are held firmly in place by cross pieces 17 which are themselves locked
n place by nuts 18 engaging threaded rods which pass through the cross pieces.
The cutters may be adjusted laterally by set screws 19 in the carriages which

page_text: engage the edges of the cutters. It will be apparent from what has already been
said that my novel machine while adapted to. use a single cutter is especially
adapted to use a set of cutters, that is, a cutter on each side of the roll, one
acting to cut up and the other to cut down. In practice however, I preferably use
more than one set of cutters. I have not illustrated this use of the machine in
the drawing as it is obviously unnecessary but shall presently refer to this use
again.
Another important feature of my invention is the feed which I will now describe.
20 denotes a shaft journalled in bearings 21 and extending longitudinally of the
machine. Oscillatory motion is imparted to this shaft in any ordinary or preferred
manner, no means being shown in the drawing as such mechanism forms no portion
of my present invention. 22 denotes a crank arm on shaft 20 by which movement
is imparted to the feeding mechanism. When an additional set of cutters is used
an additional crank arm is placed upon shaft 20 to actuate the feeding mechanism
therefor. 23 denotes the feed shaft which is journalled in bearings 24 upon the
carriage. This shaft is provided at one end with a gear wheel, 25, at its mid-length
with a worm 26 and at its opposite end with a bevel pinion 27. The novel feature
of this portion of my invention lies in journalling shaft 23 in a plane oblique to the
bed as is clearly shown in Fig. 4, the obliquity of the shaft being just sufficient to place
the thread of the worm at right angles to the bed so that the worm will engage
a gear wheel 28 journalled on and having longitudinal movement on a shaft 29 which
extends outward from the carriage. This gear wheel is engaged by two gear wheels
30 having internally threaded hubs 31 which engage threaded shafts 32 extending
outward from the carriage. The inner faces of hubs 31 bear upon a cross piece 33
through which both threaded shafts pass freely, that is to say the cross piece is
provided with openings larger than the diameter of the threaded shafts so that there
is no engagement between them.
Hubs 31 act as gear wheels 30 are moved inward on the threaded shafts, to force
the cross piece forward, said cross piece engaging the outer end of cutter 11 and
forcing it forward. The outer ends of shafts 29 and 32 are strengthened and
supported by an angle brace 34. I have for convenience used the singular form in
describing the feeding mechanism. It will of course be understood however that
the feeding mechanisms upon each pair of carriages are counterparts of each other.
35 denotes a transverse shaft journalled in bearings 36 on the respective carriages.
Adjustably secured at each end of this shaft but facing of course in opposite
directions are bevelled pinions 37, one of which receives motion from the driving feed
shaft 23, the other communicating motion to the driven feed shaft on the other
carriage. Each end of shaft 35 is squared as at 38 to receive a hand crank which
may be applied whenever a hand feed is desired. 30 is a hub journalled on the
driving feed shaft 23 and provided with an arm 40 carrying a pawl 41 which
engages gear wheel 25. 42 is a connecting rod one end of which is pivoted to
arm 40 the other to crank arm 22 on shaft 20. It will be seen therefore that
oscillation of shaft 20 will oscillate hub 39 and arm 40 on the feed shaft and
that the movement in one direction will move the pawl backward over the teeth of
gear wheel 25 and that movement in the opposite direction will cause the pawl to
engage gear wheel 25 and impart an axial movement to the feed shaft which in use
through the engagement of the hubs of the opposite gear wheels 30 with cross
pieces 33 will move the respective cutters inward a pre-determined distance
depending of course upon the adjustment of the parts. In use where two sets of
cutters are used the carriages carrying one set of cutters are placed at one end of
the roll and the carriages carrying the other set of cutters at the mid-length of the
roll, the same relative arrangement being followed should it be preferred to use
three carriages and three sets of cutters. As soon as the cut upon the roll bas been
made to the proper depth, which is determined by calipering in the ordinary manner
or if preferred-by special mechanism, the tables with the carriages upon them are
moved into position to make another cut and secured there in the manner described,
the carriages themselves are adjusted upon tables and secured there and the

page_text: strengthening rods are placed in position as already described. The operation of
making a cut may then proceed as before.
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 character described the combination with a carriage, a
cutter thereon, and a shaft 29 and threaded shafts 32 extending outward from the
carriage, of a cross piece against which the cutter rests and through which the
threaded shafts pass without engagement, a gear wheel 28 journalled on shaft 29,
gear wheels 30 engaging gear wheel 28 and having internally threaded hubs
engaging threaded shafts 32 and bearing upon the cross piece and a feed shaft 23
having a worm and journalled obliquely so that the thread of the worm will engage
the teeth of gear wheel 28, whereby the cutter is fed forward in use.
2. The combination with a carriage, a cutter thereon and a shaft 29 and threaded
shafts 32 extending outward therefrom, of a cross piece against which the cutter
rests and through which the threaded shafts pass without engagement, a gear
wheel 28 journalled on shaft 29, gear wheels 30 engaging gear wheel 28 and having
internally threaded hubs engaging the threaded shafts and bearing upon the cross
piece, a feed shaft 23 having a worm and a gear wheel 25, said shaft being
journalled obliquely so that the thread of the worm will engage gear wheel 28, a
hub 39 journaled on the feed shaft and having an arm 40, a pawl carried by said
arm and engaging gear wheel 25, rock shaft 20 having arm 22 and a rod 42
connecting arms 22 and 40.
3. The combination with a table, carriages adapted to be moved in or out thereon,
cutters on said carriages adapted to cut on opposite sides of a roll, and shafts 29 and
threaded shafts 32 extending outward from the carriages, of cross pieces against
which the cutters rest and through which the threaded shafts pass without engage-
ment, gear wheels 28 journalled on shafts 29, gear wheels 30 engaging gear
wheels 28 and having internally threaded hubs engaging the threaded shafts and
bearing upon the cross pieces, feed shafts 23 having bevel pinions 27 provided
with worms and journalled obliquely so that the threads of the wormis will engage
the teeth of gear wheels 28 one of said feed shafts having a gear wheel 25 an
oscillating arm carrying a pawl engaging the gear wheel whereby motion is
communicated, and a transverse shaft 35 having bevel pinions engaging bevel
pinions 27 whereby motion is communicated from one feed shaft to the other so that
both cutters are fed inward uniformly.
4. In a machine of the character described, the combination with a bed, a movable
table and two carriages on said table, of a feed shaft on each carriage provided with
a worm and a bevel gear 27 and journalled obliquely so that the threads of the
worms are at right angles to the machine, a transverse shaft having bevel gears
engaging gears 27 and suitable mechanism operating in connection with the feed
shafts to move the cutters inward or outward simultaneously.
Dated this 20th day of June 1894.