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Патент USA US2107214

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Feb. 1, 1938.
c. R. RECHTIN ET AL '
2,107,214
INK MILL
2 Sheets-Sheet l‘
’ ‘ Original Filed Sept. 24, 1934
Elmo/"Mi,
?are/ice
Becki/n
Richard, O/am‘Jch
351
W
a \
%
4’
W36
Feb. 1, 1938;
,
QRRECHTMETAL
'
2,107,214
INK MILL
Original Filed Sept. 24, 1934
2 Sheets-Sheet 2
Patented Feb. 1, 1938,
2,107,214
UNITED STATES PATENT OFFICE
2,107,214
INK MILL
Clarence R. Rechtin and Richard Jantsch, Cin
cinnati, Ohio, assignors to The J. B. Day Com
pany, Cincinnati, Ohio, a corporation of Ohio
Application September 24, 1934, Serial No. ‘745,296
Renewed November 19, 1937
26 Claims.
This invention relates to a mill such as may
(01.,308-62)
An object of the invention is to ‘provide a mill
condition. of the machine, the successive rolls
are in line, contacting relationship, adjusted so
that adjacent rolls contact each other with a
pressure that is uniform along the full length of
5 of the character stated, with means to facilitate
cleaning the rolls thereof when necessary.
the rolls. The adjustments between rolls are very
?ne and accurate, so that a ?ne grinding action
be employed in the manufacture of inks, paints,
,and similar substances.
-
Another object of the invention is to provide
such a mill embodying roll displacing means for
the above purpose, which means, when actuated,
19 will not necessitate a subsequent micrometric re-_
setting of the mill rolls.
A further object of the invention is to provide
a mill of the above stated character, with roll
_ supporting and adjusting means so constructed
10 and arranged that an accurate setting of the rolls
is secured and maintained even though the work
ing parts of the mill become worn by reason of
long or hard usage.
‘
A further object of the invention is to provide
20 a mill of the character stated, which is simple,
durable, and relatively inexpensive, and which
may be operated easily and properly by operators
not specially skilled in the art.
'
The foregoing and other objects are attained by
25 the means described herein and disclosed in the
accompanying drawings, in which:
Fig. 1 is a side view of the machine of the in
vention, the side cover plates being omitted.
Fig. 2 is a fragmental cross-sectional view taken
30 on line,2--2 of\Fig. 1.
'
between successive rolls is attained. The adjust
ments may be progressively closer in. the direc
tion of the ?nal or discharging roll l0, so that
the product may be removed from the ?nal roll 10
In in any suitable manner,_ suchas by means of
a scraper l2, in a ?nished ?nely divided condition.
While the accompanying drawings show a ma
chine having a group of ?ve rolls, it is to be under
stood that the rolls may be increased or de
15
creased in number, depending upon the nature’ of
the material to be treated and the characteristics
to be imparted to the ?nished substance.‘
The pair of horizontal rolls 6 and 1, which are
the feed rolls for material to be transferred to 20
the rolls 8, 9 and I0, may be more vor less conven
tionally supported near the base of the machine.
As disclosed, the rolls 6 and ‘I have concentric
axles l3 and M, the opposite ends of which are
supported in suitable bearing blocks l5 and 16.
The opposed bearing blocks l6 may be station
arily mounted in the frame whereas the pair of
bearing blocks l5 may be slidably mounted in
Ways or guides I ‘I. Two or more compression '
springs l8 may be provided for the purpose of nor 30
Fig. 3 is a fragmental cross-sectional view - mally urging the‘bearing blocks apart while a
screw l9 provided with a hand wheel or other .
actuating means 20 serves as a means for moving
taken on line 3—3 of Fig. 1.
Machines of the general character herein dis
closed have been used for grinding pigment and
35 similar substances in the manufacture of inks and
paints._ The prior machines, however,- were dif
roll( 6 toward roll 1. The direction of rotation
of rolls 6 and ‘l is indicated by the arrows ap
plied theretol
'
.
?cult to control, and whenever it became neces
sary to clean the rolls thereof or to separate the
The rolls 8, 9- and Ill may be referred to, as
transfer rolls, roll 8 being in substantial contact
rolls 'for any reason, the micrometric setting of‘ with feed roll ‘I and with the cooperative transfer
40 the rolls was destroyed and had to be skillfully roll 9. The roll 9 is in turn disposed for normally
restored before the mill could be again placed in contacting the upper roll ill. ‘
service. The present invention contemplates the
Each of the rolls 8, 9 and I0 is provided with
use of novel means for preserving the micrometric a means for'displacement thereof to an inopera
setting of the rolls even though the rolls be shifted tive position for cleaning and other purposes and
45 relatively for cleaning ,or other purposes, said with a means for effecting accurate micrometric
means being adapted also to facilitate )the clean
setting relative to the next adjacent roll. Inas
ing andre-setting operations; The means herein much as the displacing and adjustingmeans for‘
each transfer roll operate upon the same principle,
disclosed have, the further advantage of automat
_
ically compensating for normal wear of the ma
50 chine elements, so that accurate adjustments are
assured during the entire life 0 the machine.
'
The machine of the inven ‘on comprises a;
frame having spaced parallel uprights or stand
and comprise similar elements arranged merely
in a. reversed order, a detailed description thereof 50
relating to one transfer roll will sumce for the
others also;
.
I
_
'
'
_ with reference to Figs. 1 and 2, the character
box for the
ards Land 5 between which are ,_.disposed,..the 2|‘ indicates, an eccentric
, 55 series of rolls 6, ‘I, 8, 9, and i0. Inthe' operativ L shaft end. 22 of roll I 0. Bearing boa 2| may be
/
.
1
2,197,314
supported within a circular'opening 23 provided
in the vertical standard 4 of the machine frame,
the opening and the circular bearing box being
so related that the bearing box may freely be
rotated within said opening. Fig. 1 shows the
normal contacting position of roll ID with roll
9, and in this position the axis 24 of shaft 22 is
offset relative to the true center 25 of the bear
in'g box. . The centers 24 ‘and 25 normally lie in a
10 horizontal plane which includes that diameter of
bearing box 2| which includes the axes 24 and
preferably near the vertical standards of the
frame, the shaft-has ?xed thereto one or more '
hand levers “adapted to move in unison by
reason of the connection with the cam shaft.
Each hand lever is provided with an adjustable
stop which-may be in the form of a screw 52
movable with the hand lever and, adapted tocon
tact a stationary lug 53 carried by the frame of _
the machine. The adjustable stop means limits
the downward movement of the hand lever, and
determines the limit to which the cams or' ec
25. From the foregoing, it will be understood that . centrics 43 and 44 may be- rotated in counter-,
a rotational movement of the eccentric ‘bearing clockwise direction. It is to be observed that
box 2| in a counter-clockwise direction about its
true axis 25, will result in lifting the shaft 22
and itsassociated roll |0 from contacting rela
tionship with the subjacent roll 9. In a like man
_ner,_roll 9 may subsequently be lifted from its
position upon roll 3, and roll 8, in turn, may be
20 lifted relative to the feed roll ‘I.
The characters
26 indicate merely pairs of arcuate retaining
means or end-thrust'plates for maintaining the
eccentric bearing boxes in their respective open’
ings 2|.
,
Each of the eccentric bearing boxes has oper
atively connected thereto a roll displacing means
comprising amicrometric adjusting screw,- which
screws'are designated by the characters 21, 28
and 29.
The free or inner end 30 of each’ screw
is threaded‘as indicated at 3|, the threads being
received byv the cooperating threads of a nut
32 which is pivotally connected tothe bearing
box as indicated at 33. While any suitable means
may be employed for pivotally mounting the nut
relative to the bearing box, there is disclosed in
' Fig. 2 a crank member or eccentric mounting
means 34 which is fixed relative to the eccentric
bearing box. The member 34 may have a hub
35 which serves to maintain suitable anti-friction
bearing means in position within the bearing box
and about the shaft end 22; The member 34 may
' include also suitable packing rings 31 as shown,
for precluding escape of lubricant from bearings.
A sleeve 38 may be provided for clamping the
45 race of the anti-friction bearing 36 and for spac
ing a driving gear such as 39 from the crank
The gear may be keyed or other
. element ' 34.
wise flxed to the shaft end as indicated at 49.
For a purpose to be hereafter. explained, ‘the
50 threaded end‘of each micrometer screw has ?x
edly but adjustably mounted thereon, at opposite
sides of the nut 32, the limit collars 01'' stops 4|
and 42, each of said collars or_ stops being spaced
slightly from the opposite ends of the adjacent
'55
nut.
.
in the normal or operative position of the hand
levers as shown in Fig. 1 the axis of the cam shaft 15
45 and the true center of each of the cams se
cured thereto, lie in a plane which is parallel
to the base. of the machine, or perpendicular to
the single vertical plane which includes the axes
20
of all the transfer rolls 8, 9 and I0.
It~is to be observed that the several pairs of ’
roll-spacing cams 43 and 44,0f the rolls 8, 9 and
Ill, may be made progressively larger or other
wise constructed to .impart a greater movement
to certain of the rolls in order to permit spacing
of the rolls from one another. For example, the
throw of the uppermost pair of cams may ap
proximate %", the one below, 1A,", and of the
third pair, 34;", thereby to'allow substantially
uniform spacings of approximately 1,4," between 30
all rolls when they are disposed in the inopera
tive or displaced positions. The distances or
spacings above recited are by way‘of example
only, to clarify the description, and it is by no
means intended to limit the invention to the
speci?ed distanc
of cam throw mentioned.
The throw of the' cams may be determined by
their eccentricity rather than by their size, if
desired. It is noteworthy that the cams or ec
centrics 43 normally provide positive automatic
40
locks, for the rotatable roll bearings, due to their
dead-center disposition as illustrated‘ in Fig. l.
' Attentionis now directed to the fact that the
heel of the eccentric 2| which provides the bear
ing box for roll “I, faces the front of the ma
chine, as does also the toe of the corresponding
45
eccentric which provides the bearing box for _
roll 9. The correspondingeccentric for roll 9 is
disposed similarly to that of roll Ill. It is there
fore evident that one pair of eccentrics is re
versed relative to the other‘ two pairs,-_so that
a lifting movement of roll ll may be effected by
rotating the eccentric bearing boxes thereof in
counterclockwise direction (this being true ‘also
of the bearing boxes of roll 8), while‘ a clock
wise rotational movement is required of the bear
Each transfer roll is provided with a roll dis
placing means, to be actuated for quickly“ and ' ing boxes of roll 9 in order to elevate roll 9 to
completely spacing the rolls for.- cleaning :and
the displaced or inoperative position.
The .re-.- ' ’
comprises a pair of eccentrics or cams 43 and
44 each of which is fixedly mounted upon an end
of a camshaft 45 which extends transversely of
.as just described precludes all possibility- of any
other purposes, as above mentioned. Said means ‘versed positions of the eccentric bearing boxes
the machine in substantial parallelism with the
rolls, ‘and hasthe bearing mountings ,49 in the
vertical standards of the frame. Each camor
back lash that ‘would otherwise result from r0’
tation of the rolls'and their driving gears ;in op-v
posite directions, as will be explained hereinafter.
The construction provides also for maintaining
the axes .of all the transfer rolls in a common
eccentric has a bearing box 41 disposed about the ' plane.Because of
. the-’~
peculiar disposition of the ec
periphery thereof, ‘so that the cam my rotate
centric bearing boxes as abovedescrlbed, it is
‘bearing box is provided with a smooth bore 49 ~_necessary to dispose the pairs of cams 43—44
therein without rotating the bearing box. Each
the quick-acting displacing means.v also inure-1
70 which rotatably ‘receives the unthreaded shank ‘ of
of amicrometricadiusting screw'2‘l, and the ' versed and; staggered relationship, as__shown id
screw is. precluded from longitudinal- movement maybe
ms. '1.‘ rotated
‘In order
in the
thatsame
an the
direction
hand to
aliens-n
increase‘; '
in saidl'bore
Imeans of~collars_;_yor,:_the like 49
\mlls,
left-hand
threads
arev
the
pressure
between
and II which
secured to. the-screw shank.
furnished
on
the
micromctiflc
adjustment
screws
At
accessible
locations
along
th'elshaft
“and
ll
2,107,214
21 and 29, whereas right-hand threads are pro
vided on the remaining screw 28. This construc
tion eliminates any possible confusion in adjust
ing or resetting of rolls.
By means of the construction above described
there is secured and maintained always an accu
'
3
of the next roll 9. Then the next pair of levers
is elevated by the operator, to lift the roll 9 from
contact‘ with roll 8. As the throw of the cams
associated with screw 28 is less than the throw
of the corresponding cams 43 and 44 of the upper
roll ‘displacing unit, the roll 9 will not, when dis
placed, contact the upper roll l0. Similarly, ac
rate setting of the rolls due to the fact that the
rotational movement of each roll tends always to - tuation of the third or lowermost pair of levers
rotate its associated eccentric bearing box, with 5|. will cause the roll 8 to be lifted from the
the result that the threads of the micrometer . feed roll 1 without moving it into contact with 10
screws and the threads of their cooperative nuts, the previously displaced roll 9. If necessary, the
can have no play or lost motion therebetween. handwheels 20 may be operated to separate the
The normally ?xed stops or collars 4i and 62
feed rolls 6 and 1. While all the rolls are thus
which were referred to previously permit only separated or spaced apart, the driving gears re
one or two turns of the micrometer adjustment main in mesh sufficiently to rotate the rolls, and
screws within the nut or nuts 32, thereby pre
the rolls may then be wiped clean as they idle
eluding, any exaggerated maladjustment of the under the power of the driving means. After
rolls by means of the hand wheels. .The charac
the rolls are cleaned, the feed rolls 6 and 'i may
ters 51 and 58 indicate respectively pointers and be returned to the feeding position, and all the
graduated dials associated with the screws and transfer rolls moved quickly and accurately to 20
the frame, whereby previous settings of the rolls the original setting by means of the three pairs
may be repeated in the event changes are made of levers 5!, without disturbing the micrometric
by reason of the treatment of varying sub
adjustment of the screws 21, 28 and 29. Thus
stances.
.
'
the machine is replaced in service with a mini
25
The driving means for the various rolls may mum loss of time and effort.
comprise the main driving pinion 59 which is
As stated before, the rolls are protected from
?xed to the main driving shaft 60, which shaft injury andextreme mal-adjustment, by means
extends across the back of the machine and is of the stops or limiting collars M and 42 which
adapted to receive rotational movement from -are normally fixed upon the adjusting screw
any suitable source of power, for example, a
power driven pulley, sprocket or gear 6!. If
desired, a motor may be connected directly with
the main drive shaft. The power-pinion 59
meshes with a gear 62 which is ?xed on the
shaft of roll 9, and gear 62 in turn drives the
gears 63 and 39 of rolls 8 and ill, respectively.
shafts in slightly spaced relationship at opposite 30
ends ofthe adjusting screw nuts, 32.
It is_ to be understood that various modi?ca
tions and changes in the structural details of
the device may be made, within the scope‘of the
appended claims, without departing from “ the
spirit of the invention.
Gear 63 meshes also with a gear 64 on the shaft
What is claimed is:
of roll 7 and a second ?xed gear 65 on said shaft
1. The combination of a frame, a plurality-of
drives a gear 66 which is ?xed on the shaft of _ superposed rolls having bearing ends,‘ means sup
roll 6. The gear train just described preferably
is duplicated on the side of the machine oppo
site to that illustrated by Fig. 1.
The quick
acting roll displacing means and the micromet
ric adjustment means also are duplicated on the
opposite side of the machine, as are also the
bearing structures for all the rolls.
The completed machine includes a lubricating
system, gear covers or dust shields, cooling means
for- the rolls, etc., all of which is considered not
pertinent to the present invention and is there
fore not illustrated or described.
The operation of the machine is described as
follows. With the gear train driven by means
porting said bearing ends comprising pairs of cir 40
cular bearing supports mounted for rotational
movement relative to the frame, cooperative
bearings associated with said supports and hav—
'ing their centers offset relative to the axes of
rotation of the bearing supports, the bearing ends
of the rolls being received in the said coopera
tive bearings, means for rotating certain of the
bearing supports in unison, and associated means
for rotating the bearing support, individually,
the true centers of corresponding bearing sup
ports being offset relatively, with the axes of the
superposed rolls lying normally in a. single up
right plane.
'
2. In a device of the class described, _the com
substance to be treated is placed in the trough bination of a frame, a plurality of rolls having
of a motor or other ‘suitable power source, the
Gr-
formed between the two feed rolls<6 and 1. As
these rolls rotate in the directions indicated by
the small arrows, the substance (usually a liquid
' or semi-solid) is transferred by roll .1 onto roll
8, the transferring being continued by rolls 9
and I0 until. ?nally the substance is removed
from roll H) by means of the scraper or remover
I2.
While the machine is thus operating, the
various hand wheels may be actuated to micro
metrically adjust-the force of the rolls upon one
another so that the substance treated will be
crushed and mixed uniformly along . the full
length of the rolls. The levers 5| will be in the
positions shown, with their adjusting screws 52
in contact with their respective stops 53.
Should it thereafter be necessary to clean the
rolls, the operator grasps the levers 5|, which
move in pairs, and elevates them through an
arc of about 90 degrees, beginning with the upper
pair, so that the top roll will ?rst be lifted off
bearing ends, means supporting said bearing ends
comprising bearing supports mounted for rota
tional movement relative to theframe, alternate
ones of said bearing supports being reversed and
having their centers offset relatively, cooperative 60
bearings for the roll bearing ends associated with
said supports and having their axes offset rela
tive to the centers of the bearing supports, the
axes of said bearings for the roll bearing ends
being disposed substantially in a single plane,
means for rotating certain ones of the bearing‘
supports in unison for displacing the rolls bodily,
and relatively slow acting means operative for
rotating the bearing supports individually.
3. In a device of the class described, the com
bination of a frame, a plurality of rolls having
bearing ends, means supporting said bearing ends
70
comprising bearing supports mounted for rota—
tional movement relative to the frame, alternate
ones of-said bearing supports being reversed and 75
2,107,214‘
4
rotatably relative to the frame member for sup
having their centers offset relatively; coopera
tive bearings for the roll-bearing ends associated ' porting said roll and comprising a perforation for
with said supports and having their axes offset reception of the bearing end of the roll, the perfo
relative to the centers of the bearing supports, ration of said support being eccentric to the
the axes of said bearings for the roll bearing ends
being disposed substantially in ‘a single plane,
means for rotating certain ones of the bearing _
supports in unison for displacing the rolls bodily,
and relatively slow acting means operative for
rotating the bearing supports individually, and
center of the support, a screw having a shank, a 5
handle, and threads, a cam mounted for rotation
relative to the frame and provided with means
for rotating the cam, a bearing box associated
' with the cam and having a boreitherein for re
ception of the screw shank. means precluding 1|
means associated with said individually operative _ longitudinal movement of the shank in the bear
means to impart opposite directions of rotation
to adjacent bearing supports as said individually
operative means are actuated in a‘ common man'
15
ner and direction.
'
-
4. In combination, a frame member, a roll
having a bearing end, support means mounted
rotatably relative to the frame member, for sup
porting said bearing ‘end and comprising a perfo
ing box while permitting rotation of the shank
therein, the support, the cam, and the bearing
box being so related that the screw extends in
substantial parallelism with a plane which passes 1
through the center of the support and theaxis of
the aforesaid perforation, a nut engaging the
screw threads and means for mounting the nut
upon the rotatable support, and means for limit
ration for reception of the bearing end of ‘the . ing the travel of the screw through the nut so as 2
roll, the perforation of said support being eccen
tric vto the center of the support, a screw having
a handle and threads, and means for mounting
the screw upon the frame in substantial parallel
25. ism with a plane which passes through the center
to allow only- a slight rotation ‘of the rotatable
support by reason of rotational movement of the
screw.
_
.
8. A machine of the class described, compris
ing in combination, a frame member, a roll hav- 2
ing a bearing end, support means for the roll ,
of the support and the axis of the bearing perfo
ration, a nut mounted for movement with the, mounted rotatably relative to the frame member,
bearing support and disposed for engaging the
threads of the screw whereby rotation of the
screw effects a rotation of the bearing support,
and means for bodily shifting the screw mounting
means substantially longitudinally, independently
of actuation of the screw handle. v
_
5. In combination, a frame member, a roll havf
ing a bearing end, support means mounted. ro
‘ tatably relative to the frame member for support
ing said bearing end and comprising a perfora
tion for reception of the bearing end of the roll,
the perforation of said support being eccentric
to the center of thesupport, a screw having a
handle and threads, and means for mounting
the screw upon the frame in substantial parallel
ism with a plane which passes'through the center
of ' the support and the axis of the bearing perfo
ration, a nut mounted for movement with the
bearing support and disposed for engaging the
threads of the screw whereby rotation, of the
screw effects a rotation of the bearing support,
and means including a rotatable cam for bodily
said support means having a perforation for ro
tatably receiving the bearing end of the roll, the
perforation of said support means being eccentric 3
to the true center of the support means, a screw
having a shank, a handle, and threads, a nut
carried by the support means and operatively en
gaging the threads of the screw, and means
upon the frame including an eccentric mounting 3
for the screw shank in position to rotate the roll
support means upon rotational movement of the
screw, the eccentric mounting being adapted to
advance and retract the screw longitudinally, and,
to assume a dead-center position locking the 4
screw at one limit of its longitudinal travel.
9. A machine comprising in combination, a
frame member, a roll having a bearing end,-sup.
portmeans for the roll mounted rotatably rela
tive to the frame member, said support means .4
having a perforation for rotatably receiving the‘
bearing end of the roll, the perforation of said
support means being eccentric to the true center
of the support means, a screw having a shank, a
' handle, and threads, a nut carried by thesupport I
50 shifting the screw mounting means substantially means and operatively engaging the threads of
longitudinally, independently of actuation of the
the screw, and means supported upon the frame
6. In combination, a frame member, a roll member in position to rotate the roll support
having a bearing'end, support .means mounted means upon both rotational and longitudinal,
movement of the screw,lsaid last mentioned I
rotatably
relative to the frame member for sup
v55
porting said roll and comprising a perforation means including an eccentric having a quicker
for reception of the bearing end of the roll, the throw movement than the screwthreads.
10. In a machine of the class described, the
perforation of said support being eccentric to the >
screw handle.
-
‘
’
. center of the support; a screw having a shank, a
handle, and threads, a cam mounted for rotation
relative to the frame and provided with means
for rotating the cam,‘ a bearing box associated
with the cam and having a bore therein for re
ception of the screw shank, means‘precluding
longitudinal movement of the shank in the bear
ing box while permitting rotationlof the shank
therein, the support, the cam, and the bearing
combination of ' a frame, a roll bearing means
mounted upon the frame for shifting movement,
a rotatabl gadjusting member for the bearing
means, 0" perative engaging screw threaded
means on- the adjusting memberand the bearing
means for adjusting the position of the bearing
means by rotation of the adjusting member, a ‘
rotatable cam shaft supported upon the frame a
substantially perpendicularly to the axis ofro
box being so related that the screw extends in tation of the rotatable adjusting member, a cam
substantial parallelism with a plane which passes _ on said shaft, a box having a circular bore ro
through
the center of- theésupport and the axis of tatably housing said cam, a bearing carried by 1
70
the. aforesaid perforatiog, a nut engaging the said box and receiving the rotatable adjusting
screw threads and means for mounting the nut Hmember, and means-for normally precluding
upon the rotatable support.
\ longitudinal movement of the adjusting member
'
7. In combination‘, a frame member, a roll}
in
having a bearing end, sup
means mounted
in the last mentioned bearing.
.
‘
11. In a machine of the class described, the 1
5
2,107,214
combination of a frame, a roll bearing means
' mounted upon the frame for shifting movement,
a screw threaded nut carried by and -movable
with the roll bearing means, a screw comprising
a threaded end engaging the threads of the nut,
a shank portion, and a manipulating means on
the screw, a rotatable shaft supported upon the
frame substantially perpendicularly to the screw,
a circular disc eccentrically mounted upon said
shaft, a bearing box having a circular bore ro
means including a series of quick-acting eccentric
devices each connected to a roll support and
movable to a dead-center position at which the
roll support is locked against accidental rotation,
and a second means for rotating the roll sup
ports while the other roll support rotating means -
is in the dead-center position.
16. A machine of the character described com
prising in combination: a framemember, a roll
having a bearing end, support means for the roll 10
tatably supporting said disc and a second bore
rotatably supporting the screw shank, means
mounted rotatably relative to the frame member,
means on the adjusting member and the bearing
tudinal shifting in one direction.
means for varying the position of the bearing
17. A machine of the character described com
prising in combination, a frame member, a roll
having a bearing end, support means for the roll
the axis of rotation of the bearing end'of the
roll being eccentric to the center of the rotatable
for rotating the eccentrically mounted disc with
in the ?rst mentioned bore-of the bearing box, support means, an adjustment shaft having op
and means for normally precluding longitudinal > posite endspone of which ends is adapted for v15
manipulation by hand, and the other of which
movement of the screw shank through the sec
adjustably connects with the roll support means,
ond mentioned bore of the bearing box.
'
12. In a machine of the class describedthe for advancement and retraction of the support
combination of a frame, a transfer roll rotatably means along an are upon rotation of‘ said shaft '
in opposite directions, and a cam device movable 20
mounted upon the frame, a second roll and shift
to a dead-center position and operatively con
able bearing means therefor whereby said sec
ond roll may be moved to and from a working nected with the adjustment shaft to shift it
position with respect to the ?rst roll, a rotatable longitudinally independently of its rotational
adjusting member for said shiftable bearing, movement, the dead-center position of the cam
device serving to lock the shaft against longi
Ll means, cooperative engaging screw threaded
means by rotation of the adjusting member, a ro~
.tatable cam shaft supported upon the frame sub
stantially perpendicularly to the axis ‘of rota
tion of the adjusting member, a cam on said
shaft having a toe and a heel, a box having a
circular bore rotatably housing said cam, a bear
ing carried by said box and receiving the ro
mounted rotatably relative to the frame member,
said support means having a bore for rotatably
receiving the bearing end of the roll, the bore
of said support means being eccentric to the true
center of the support means, a screw having a
tatable adjusting member, means for normally » shank, a handle, and threads, a nut carried by 35
the support means and operatively engaging the
precluding longitudinal movement of the adjust
ing member in the bearing of the box, the heel threads of the screw, the nut being rockably
and toe of the cam being so related to the box
bearing as to assume a dead center relationship
mounted at one side of the axis of rotation of
with the axis of the adjusting member when the
rolls are disposed in working position.
means on the frame member snugly embracing 40
the screw shank for rotational movement of said
shank with a close bearing ?t, and means pre
cluding lengthwise movement of the screw in said
13. In a roller mill having a frame and a series
of superposed rolls supported thereon with their
axes in a single upright plane, the combination
of pairs of supports for the opposite ends of the
rolls, said supports being circular and rotatable
the support means, a selectively shiftable bearing
bearing means.
-
18.~ In a device of theclass described, the com
bination of a frame, a plurality of rolls having
bearing ends, means supporting said bearing
ends comprising bearing supports mounted for
of the plane of the roll axes, and means for ro- - rotational movement relative to the frame, alter
nate ones of said bearing supports being reversed 50
tating adjacent roll supports in opposite direc
’ and having their centers offset relatively, co
tions of rotation for spacing the rolls apart.
operative bearings for the roll-bearing ends asso
14. In a roller mill having a frame and a series
of superposed rolls supported thereon with their ciated with said supports and having their axes
axes in a single upright plane, the combination offset relative to the centers of the bearing sup
of pairs of supports for the opposite ends of the ports, the axes of said bearings for the roll bear
rolls, said supports being circular and rotatable ing ends being disposed substantially in asingle
relative to the frame, with the centers of the roll plane, means for rotating certain ones of the
supports staggered and lying at opposite sides of bearing supports in unison for displacing the
the plane of the roll axes, and means for rotating rolls bodily, and relatively slow acting means
relative to the frame, with the centers of the roll
supports staggered and lying at opposite sides
adjacent roll supports in opposite directions of
operative for rotating the bearing supports in
rotation for spacing the rolls apart, said means
including a series of quick-acting eccentric de
vices each connected to a roll support and mov
able to a dead-center position at which the roll
nut, to impart opposite directions of rotation to
adjacent ‘bearing supports upon actuation of
dividually, each including a screw shaft and a I
said slow acting means in a common manner
and direction to effect roll ‘contact adjustments,
and gearing for driving the rolls and tending to
of superposed rolls supported thereon with their rotate each roll support in a direction opposing
axes in a single upright plane, the combination ' roll advancing movement of said slow acting
of pairs of supports for the opposite ends of the
support is locked against accidental rotation.
15. In a roller mill having a frame and a series
means.
rolls, said supports being circular and rotatable
relative to the frame, with the centers of the roll
supports staggered and lying-at opposite sides
of the plane of the roll axes, andmeans for re,
tating adjacent roll supports in‘ opposite direc
tions of rotation for spacing the rolls apart, said
'
,
19. In a roller mill having a frame and a series 70
of superposed rolls supported thereon with their
axes in a single upright plane, the combination
' of pairs of supports for the opposite ends of the
rolls, said supports being circular and rotatable
relative to the frame, with the centers of the roll 75
6
2,107,214
supports staggered and lying at opposite sides of
means between the eccentrics and the roll sup.
the plane of the roll axes, and means for rotating
adjacent roll supports in opposite directions of
porting bearings for translating rotational
movement of theeccentrics into shifting move
rotation for spacing the rolls apart, said means,
including a series of quick-acting eccentric de
vices each connected to a roll support and mov-.
- able to a_ dead-center position at ‘which the roll
ment of the roll supporting bearings, the eccen
trics for the different rolls having different
throw values, assuring diifering extents of roll
supporting bearing shiftability upon rotation of
support is locked against accidental rotation, and > the eccentrics through substantially equal arcs
relatively slow acting means manipulatable to of rotation.
, 24, vA roller mill comprising a frame and a plu-_
10 impart opposite directions of rotation to adjacent
bearing supports upon actuation of said slow rality of rotatable rolls, roll supporting bearings
acting means in a common manner and direction shiftably mounted upon the frame for support
to eifect roll contact adjustments, and gearing ing the rolls in substantial parallelism, and
for driving the rolls and tending to rotate each means for shifting said roll supporting bearings
15 roll support in a direction opposing roll advanc ' and the rolls supported thereby, to alter the‘
spacing between the rolls, said means compris-V
ing movement of said slow acting means.
20. In a roller mill having a frame and a series ing a‘ rotatable eccentric for each roll and con
of superposed rolls supported thereon with their necting means between the eccentrics and the
roll supporting bearings. for translating rota-.
axes in a single upright plane, the combina
tion of pairs of supports. for the opposite ends tional movement of the eccentrics into shifting
movement of the roll supporting bearings, the ec- '
of the rolls,isaid supports being circular and ro
tatable relative to the frame, with the centers of centrics for the different rolls having different
the roll supports staggered and’ lying at opposite throw values, assuring differing extents of roll
sides of the plane of the roll axes, and vmeans supporting bearing shiftability upon rotation of
the eccentrics through substantially equal arcs on
25 including a series of eccentrics each having a dif
ferent throw value, for rotating adjacent roll sup
ports various distances in opposite directions of
rotation for spacing the rolls apart.
21. In a roller mill having a frame and a series
30 of superposed rolls supported thereon with their
» axes in a single upright plane, the combination
of rotation, and means for rotating the eccen
trics toward and from dead-center holding re
lationship to the roll supporting bearings.
25. A roller mill comprising a frame and a
plurality of--v rotatable rolls, roll supporting bear
ings shiftably mounted upon the frame for sup
of pairs of supports for the opposite ends of the
porting the rolls in substantial parallelism, and
rolls, said supports being circular and rotatable
means for shifting said roll supporting bearings
and the rolls supported thereby, to alter the
' relative to the frame, with the centers of the
spacing between the rolls, said means compris
35 roll supports staggered and lying at opposite sides
of the plane of the roll axes, and means for ro - ing a rotatable eccentric for each roll and con
tating adjacent roll ‘supports in opposite direc
nections between the eccentrics and the roll sup
tions of rotation for spacing the rolls apart, said
, means including a series of quick-acting eccentric _
porting bearings for translating rotational move
ment of the eccentrics into shifting movement of
the roll supporting bearings, the eccentrics for
40 devices each having a di?erent throw value, and
connected to a roll support and movable to a 1 the different rolls having different throw values,
dead-center position at which the roll support
assuring differing extents of roll supporting
is locked against accidental rotation.
bearing shiftability upon rotation of the eccen
.
22. In a machine of the class described, the - trics through substantially equal arcs of rotation,
and comparatively slow acting means for shift
combination of a frame, a series of roll bearing
means mounted upon the frame for shifting ing said roll supporting bearings while the co
movement, a rotatable adjusting member for, centrics remain in a state vof rest.
26. A roller mill comprising a frame and a
each of the bearing means, cooperative engaging
screw threaded means on each adjusting mem
plurality of rotatable rolls’, roll supporting bear
ber and its associated bearing means for adjust
ings shiftably mounted upon the frame for sup
ing the position of the bearinggmeans by rota ' porting the rolls in substantial parallelism, and
tion of the adjusting members, a series of ro
means for- shifting said roll supporting bearings '
tatable cam shafts each supported by the frame and the rolls supported thereby, to alter the a
substantially perpendicularly to the axis of ro
a rotatable eccentric for each roll and connec-'_
on each shaft, each of said camkhaving av dif
tions between the eccentrics and'the roll sup;
porting bearings for translating rotational move
ment of the eccentrics into shifting movement
ferent throw value, a box having a circular bore
rotatably housing each cam, a bearing carried
by each box and receiving one of the rotatable
adJusting members, and means for normally pre
cluding longitudinal movement of the adjusting
member in'the last mentioned bearing.
. ' 23. A roller mill comprising a frame and a plu
rality of rotatable rolls, roll supporting bearings
shiftably mounted upon the frame for support
> ing the rolls in substantial parallelism, and means
70
' spacing between the rolls, said means comprising
tation of a rotatable adjusting member, a cam
for shifting said roll supporting bearings and
‘the rolls, supported thereby, to alter the spac-'
ing between the rolls, said means comprising a
rotatable eccentric for each .roll and connecting
ofthe roll supporting bearings, the eccentrics
for the different rolls having different throw
values, assuring di?eringextents of roll support
ing bearing shiftability upon rotation of, the ec-'
centrics through substantially equal arcs of ro
tation, and additional roll supporting bearing
shifting means operative individually upon the
bearings at opposite ends of the rolls for equaliz
ing the force of roll contact at-opposite ends of
the contacting rolls.
>
'
4
'
' '
CLARENCE R. RECHTIN.
RICHARD JANTSCH.
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