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Патент USA US2128575

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Aug. 30, 1938.
Filed Jan. 31, 195s
5 Sheets-Sheet 1
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Aug. 30, 1938.
Filed Jan. 31, 1936
3 SpeetS-Sheet 2
Aug. 3o, 193s. '
E. reoßlzre‘rsA
, 2,128,575
Filed. Jan; 31, 1936
com u7np
3 .Sheets-Sheet 5
Patented Aug. 30, 1938
, I
Eugene Roberts, Hastings, N. Y., The
Western States Machine Company, Salt Lake
City, Utah, a corporation of Utah
' Application January 31, i936, seria.; No. 61.335
v14 claims.
This invention relates to new and improved
centrifugal apparatus for use in the centrifuging
of sugar and like materials, and it is intended to
provide means for driving suspended gyratory
(ci. ,21o-_7.1)
adaptable for various conditions of installation.
I have found _that the speed and acceleration
0f ggyl‘atory centrifugals may be greatly increased
while renderingtheir operation entirely safe and
5 centrifugals of the type used in sugar refineries
satisfactory ffrorn both an economical and a me- 5
at considerably higher speeds than> has heretofore been the practice, while at the same time
enabling ar much quicker ratev of kacceleration
which .I have found to Vbe an important factor
10 in the successful and practical operation'of high
speed centrifugals for sugar and analogous work.
Heretofore, under the best commercial prac-
chanical point of view by providing a new ar
rangement 0i powering, power transmission and
coupling means intermediate a source yof power
andthe basket spindles of several centrifugals.
I have found also that an individual centrifugal l0
may be improved for flexibility of. installation and
operation and for operation at high or low speeds,
tice, sugar centrifugals employing the prevalent
with or without unusually rapid acceleration to
40" basket have been operated at a top speed
such speeds, by providing it with an improved
15 of from 1100 to 1200 R. P. M. either by means
driving unit in accordance with my invention.
of a quarter turn belt passing over a pulley on
Apreferred general arrangement of apparatus
the basket spindle or by means _of an overhead
electric motor directly connected to the spindle.
When charged with its full load, each centrifugal
20 Weighs approximately> one ton, and even at the
speeds above mentioned it is necessary in the
case of the rdirectly connected motor driven
centrifugal to use avery much oversize motor to
eiîect satisfactory results. A well designed cen25 trifugal canbe accelerated slowly to a speed under
inwhich the present» invention is embodied com
prises a horiaonal line shaft positioned above or
-1200 R. P. M.;by means of an electric motor con-
suming approximately 20 horsepower, but to obtain the desired higher rate of acceleration would
require a consumption of power rising as high as
30 60 horsepower, with peak power loads much
higher under certain conditions.
In consequence
of these requirements, motors must be built very
much oversize, which means heavy additional eX-
adjacent a series ,of suspended gyratory cen
trifugalmachines, each of which is independently 20
drivenfromthe same line shaft through apower
transmitting mechanism, preferably a centrifu
.gall-y actuated clutch, and an intermediate driv
ing~ unit including a train of transmission gears.
Oneof thel transmission gears lS Connected With a 2,5
rotatable Vdriving member which, in turn, is con-
nected Wlth'a 'pulley fOr 'the Clutch 01' With Other
power.transmittingmeans. Anotheris secured to
a vertical-non-.gyratory transmission shaft having
añeX-ible but positivefdriving connection with the 30
underneath gyratory centrifugal shaft'or spindle. ’ `
A_n. important feature of this general'arrange
ment iS. thalìzit 'permits SubSlìaIllìial DOWGI‘ SaVîngS
pense and difficulties in installation and further35 more involves a wasteful expenditure of power.
To raise the speed of the centrifugal still further
and .quicken its acceleration would greatly aggravate the diaiculties incident to the use of
directly connected electric motor drives. On the
4_0 other hand, any marked increase of speed and ac-
in the OperatîOn 0f a Series 0f Celll'fl’ìîllgals'at
high Speeds andwith rapid aßçelel‘alìioll t0 S11-Ch >35
Speeds. The Cycle 0f treatment 0f materials
such as mixtures 0,.f. Sugar grains and syrup in
vol-ves..braki-naunloading, reloadinsand acceler
ation of some of the centrifugals of a series while
others are spinning at Íllll $l3eed- During the 40
celeration with belt driven machines would require the use of wider, heavier belts which, in
.view of >tlfieir being of the quarterturn type, are
also subject to practical objections, and it would
.45 `-il‘npose other severe operating requirements on
such machines which are inconsistent with their
braking, unloading and reloading stages of the
CYClC, lâh?. Cerllêlîl'ffugal does not exert av Substantial
drain 0n, ’GheRQWelî Soulîßa During. the accelera
tion stage, however,- the DOWer per Gentlflfllgal
rises abruptly to its lilighasl'l point, and it later 45
tapers‘down to a normal Vamount vafter f_ull speed
.operating capacity.
hasbeen attained.- My improved arrangement of
A further important disadvantage of the appa-
cen-trifugals, driving unitsand power transmitting
»ratus heretofore used consists in the fact that
meansr on a common line shaft greatly reduces
„5_0 after Ithe vicentriiîugals are installed f_or a certain ythepo’we’r peak normallyrequired for acceleration 5,0
.type .of operation, it is ~extremely `diiìicult to var-y of each centrifugal, due to the Vstrong momentum '
their operation to any substantial extent. The ofthe line shaft ’and-heavy»4 parts revolving there
apparatus has -no_t been ycharacterized by ñexi- withtogether with that of the severalfcentrifugals
bility such „as I have found to be important for
¿Q5 @best Itp11messing operations, nor has itbeen readily
of ay series which revolve in unison at highspeed
while the acceleration takes place.
In addition to the aforesaid novel .general
arrangement of centrifugals and centrifugal driv
ing means, my invention provides an improved
pletion of the repairs, and this would mean much
difficulty and expense in digging out the hardened
massecuite before the centrifugals could be started
~ driving unit for connecting each of the centrifu
gals with a source of power, which is of impor-v
tance because of its usefulness in either a group
drive or an individual driving arrangement. This
in operation with a fresh batch of massecuite.
These and other improvements will be particu
>larly described in the following specification and
improved driving unit comprises an enclosing
will be defined in the claims hereto annexed.
In the accompanying drawings is illustrated a
casing which is accurately machined to provide a
practical and eflâcient embodiment of. my im
mounting for the essential moving parts of the
provements, in which
Fig. 1 is a small scale elevation showing the
arrangement of a battery of centrifugal machines
unit, including the train of intermeshing gears
referred to above. A rotatable driving member
is mounted within the casing and provided with
an extension projecting outside of the casing for
connection with another rotatable member, for
example a pulley or shaft through which power
is transmitted. A bevel vgear is keyed to this ñrst
rotatable member. A transmission shaft is
operated from a common sectional line shaft with
angle to the axis of the rotatable drivingmember,
a powering motor for the shaft located inter
mediate of the group of centrifugals.
Fig. 2 is a vertical central section through the
driving mehcanism of, a single centrifugal.
Fig. 3 is a front elevation of the construction
shown in Fig. 2.
Fig. 4 is a detail cross section showing the cou 20
and this shaft carries a bevel gear in accurate
mesh with the bevel gear ñrst mentioned. The
transmission shaft has an extension which pro
jects outside the casing and is positively and con
mission shaft and the basket shaft, as well as the
brake and the brake drum.
Fig.'5 is an end elevation on the plane 5-5 of
mounted within the casing with its axis at an
pling between the vertical non-gyratory trans
stantly coupled to the gyratory spindle of the
centrifugal. In conjunction with the parts men
tioned, the unit comprises suitable bearing mem
bers within the casing arranged for precise align
ment and smooth operation of these parts,l and
Fig. 2 further illustrating the driving mount of
the centrifugal.
According to the specific construction and
arrangement shown in the drawings there is pro
the casing includes means facilitating attachment
of the unit to framework above the centrifugal.
By the use of a driving unit of this type sub
stantial improvements may be obtained in cen
trifugal operations. The Vsource of power, of
3 whatever nature, may be arranged to one side of
sections are coupled together as shown at 2 by
any suitable type of flexible transmission cou
pling members, and each line shaft section is
N) Cl
the basket spindle to provide a more satisfactory
plant arrangement. The powering means may
be changed without reconstructing the unit or
the centrifugal spindle or intermediate couplings.
40 The unit may be moved and attached to the con
ventional motor base for a directly-driven cen
trifugal, or to any other suitable framework,
without danger of misalignment of its moving
parts and consequent diiiîculties, because a proper
4 Ul
setting of the bearings, rotatable driving member,
gears and'transmission shaft remains accurate
and insures precise operation for an indefinite
period." It may be constructed with any gear
ratio appropriate to the power and speed of the
50 power transmitting means with which it is con
nected and the desired speed of the basket, and
it fully withstands the continual severe strains of
rapid acceleration to high speeds and short oper
atingv cycles.
A further improvement in driving construction
resides in the construction of the line shaft in
individual sections, one lfor each centrifugal
mounted in its own individual bearings and ilex
ibly coupled to adjacent sections, thereby per
60 mitting the removal of one shaft section without
disturbing the other line shaft sections.
Another feature of the present invention is the
provision for driving the line shaft from a power
ing _device located intermediate the series of
centrifugals whereby the centrifugals on one side
of the powering device may be maintained in
normal operation, while a centrifugal on the other
sidel may be removed for repairs or replacements
withoutrstop‘ping the centrifuging of the masse
70 cuite or magma.
'This is an important feature of.
advantage because should anV accident happen,
which ordinarilyrwould require the stopping of the
line shaft, the massecuite in the overhead mixer
trough, which suppl iesl the centrifugals, might
75 become set or hardened. While awaiting the com
vided a horizontal line shaft I, which is made in
individual sections for each centrifugal, which 'g
supported in anti-friction bearings contained in
suitable housings or containers 3 and 4 provided
with closure caps or covers 3e, lla. The housing 3
for supporting one end of a shaft section, the
right hand end as shown in Fig. 2, is supported
in a hollow casing 5 whose opposite sides are pro
vided with annular bearing seat members 5b
and 5C, respectively, for the insertion and re
moval of anti-friction bearing elements. The
casing 5 forms an upstanding hanger whose bot
tom portion or bed 5aL is provided with means en
abling it to be accurately positioned and bolted
upon a bed plate 6, which is provided at its left
hand end with an upstanding supporting bracket
6a on which the bearing housing 4 is secured.
Thus each shaft section is supported near its
opposite ends by supporting members project
ing upwardly from a common bed plate which is
mounted upon and secured to suitable longitudinal
beams a and cross-beams b that are usually found
in the framework of centrifugal apparatus be
neath the sloping overhanging portion of they
mixer trough ofthe centrifugal apparatus, which
it is unnecessary to show herein as it is an old
feature of sugar centrifugal apparatus construc
The casing 5 forms the enclosure and mount
ing of a precisely machined and assembled driv
ing unit which permits displacement of the power
transmitting means to a point laterally of the
centrifugal `and effects a positive connection be
tween said means and the basket spindle such
that severe strains of rapid acceleration and
high speed operation on short cycles will not in
terfere with the freedom of the spindle to gyrate
and seek its own axis of rotation. This improved
driving unit includes a rotatable driving member 70
which is keyedto a bevel gear inclosed within
the casing and provided with a portion extend
`ing outside the casing for attachment to the
Vpower transmitting means, together with a verti
cally positioned non-gyratory transmission shaft
provided with bearings and bea-ring seatsin parts
of the casing structure and having a portion ex
tending outside the casing for attachmentV to
flexible coupling elements. intermediate the driv
ing unit and the gyratory basket spindle, and an
other bevel gear keyed to this transmission shaft
means of retracting links I 4, so that when the
free ends of the arms Il are moved inwardly by
the toggle links I2 fulcrumed to the sliding hub
member I3 the shoe-carrying arms I5 are drawn
inward, thus separatingA the friction shoes from
the pulley rim. The lhub member is forced in
and located in accurate meshing relation tothe
wardly to effect retraction Iof the clutch shoes by
bevel gear- iìrstk mentioned. The construction of
the unit as embodied in the improved group driv
meansv of a lever Il fulcrumed at Ila, whose upper
end is forked to engage opposite sides of a collar
I3a which is anti-frictionally mounted ron the 10
hub; I3 to permit it to resist rotation by reason
of its engagement or connection with the fork
portion of the arm VI. The lower end of the lever
Il is provided with a toothed sector I8 meshing
with a pinion I8a on the control shaft I9 which 15
carries a hand wheel I9a by which it can be op
erated in starting'the machine and setting in ac
lI) ing arrangement illustrated in the drawings is
described in further detail below,> but it will be
understood by personsskilled in the art. that de
tails of construction employed in this particular
arrangement are not essential to the invention
15 and may be varied within the scope of the claims.
In the illustrated apparatusjthe casing 5 for
each driving unit is provided with structure c0
operating with parts of a liquid cooled clutch pul
' ley forming an element of the powerA transmit
20 ting means for each centrifugal and> secured to
the extended portion of the above mentioned ro
tatable driving member. Outside of annular
flange 5c is an- annular flange 1 integral with,
or secured to, the casing` 5„ the opening' ofvthis
25 flange being considerably larger than the open
ing in the flange 52 which it surrounds concen
trically, to permit the projection through it of
an annular flange 8'<1 forming, part of the hollow
pulley 8, which is loosely mounted about the
30 shaft section I for free rotation‘thereon. The
rim portion of the pulley 8, as well as the spider
portion Bb, are both made hollow for the circu
lation of cooling liquid which enters through a
supply pipe 50‘ and whose outlet is through the
35 annular passage between the flange 5° of the cas
tion, the automatic timing mechanism. disclosed
in my pending application Serial No. 732,114, the
details of which are not claimed herein but form, -20
in part, the subject matter of the said pending
The spider of the clutch pulley 8 is secured to
a rotatable driving member for the driving unit,
in this embodiment an elongated sleeve or hub v
9 surrounding the shaft I and mounted on bear
ing supports precisely positioned in the bearing
seats 5b and 5c of casing 5. A large bevel gear
3G is splined to driving member 9 inside the cas
ing 5 so that it rotates when the clutch pulley 30
is energized by engagement of the centri-fugally
actuated clutch shoes I6 with the rim of the pul
ley 8.
Directly beneath the line shaft I is located the
vertical non-gyratory transmission shaft 32 of
cle orspil'l-way into which the cooling liquid flows
each driving unit which carries at its upper end a
smaller bevel pinion 3l intermeshing with the
much larger bevel gear 30. This vertical trans
mission shaft 32 is mounted in upper and lower
after having performed its cooling function and
40 from
which it may be drawn off and cooled for
anti-friction bearings, accurately fixed within
casing 5, for rotation abo-ut a constant axis, and it
ing and the flange 8@ of thevrevoluble clutch pul
ley. The space between the annular flange 'I and
the adjacent wall of the casing forms a recepta=
This cooling of the pulley, how
ever, forms no part of the present invention
herein claimed and is claimed in a copending ap
45 plication, so that more detailed description there
of is unnecessary here.
Between the line shaft I and the driving unit
of each centrifugal means are employed which
may be controlled to establish power transmitting
is provided 4at its lower end with means for con
necting it directly to positive butv flexible coupling
elements for a gyratory basket spindle.
Thus a
»flange integral with the lower end of the.à
shaft is connected to downwardly projecting
clutch of coupling lingers 32a, and these are in
terposed betwen similar’ñngers 33a of a coupling
:member 5?, fastened to the projecting upper end of
as well as to. establish a positive non-slipping
the gyratory centrifugal basket spindle 40 inor
der to connect shaft 32 and spindle 40 together.
This coupling forms a positive drive connection
between the non-gyratory transmission shaft 32
and the gyratory centrifugal shaft dll, which lat
connection which couples the driving unit, and
through it the basket-carrying spindle, with the
ried by combination thrust and radial bearings
connections of progressively increasing trans
mitted speed and thereby to effect smooth ac
celeration of the centrifugal notwithstanding
constant rotation of the line shaftat full speed,
ter in accordance with well known practice is car
line shaft for rotation in unison at full speed. h 4I mounted on the outside of a tubular suspender
34 having a spherical supporting ball 35 seated in
The illustrated means for forming such a‘con
nection between the continuously rotating line a socket in the fixed hangar 35, which is secured to
a depending hanger member 5b forming a down 60
60 shaft i and the loose pulley 8 is in substance like
ward extension of the bed plate 5. It will there
the clutch mechanism sho-wn and described in
my Letters Patent of the United States No. 1,184,
fore be seen that the shaft section and the drive
873 granted October 25, 1932, so that full descrip
- transmission mechanism for each centrifugal, as
tion thereof in this application is unnecessary.
well as the centrifugal itself, are carried by a uni
tarysupporting structure so that, when the ilexi
The clutch mechanism comprises a radial arm
spider I0 fastened o_n the line shaft I, on which
arms are fulcrumed oppositely disposed pivotal
ble joint couplings 2 are disconnected, the whole
shoe-carrying arms -I5 on which are pivotally
mounted friction shoes I6 which under centrif
moved after the 'hanger 36 with the centrifugal
has ben disconnected from the depending hanger
element 6b of the bed plate. Any slight variation 70
in perfect alignment of the shaft sections is taken
care Vof by providing flexible joint couplings 2
ugal force press outwardly powerfully against
the interior face of the rim of the -pulley 8. 'Iv‘o
retract the clutch shoes from >engagement with
the pulley rim there is also fulcrumed on the
spider a pair of retracting arms II, which are
connected with the shoe-carrying arms I5 by
bed plate with its supporting members can be re
ywhich may be of any »well known type 'of construc
tion. It will valso be seen that, in the illustrated
form of apparatus, driving `coupling between the
ñngers 32a and 33a takes place substantially in the
plane of the center of gyration of shaft 40, which
is located at the center of ball 35 and its support
ing socket.
An outer meber ¢l2~on the basket suspension
rates of acceleration, also lends important ad
vantages to the arrangement. By providing, in
termediate the series of centrifugals driven from
the line shaft, a powering element, which as
shaft 40 carries a rigidly and removably attached
motor secured directly to the line shaft, several
advantages are gained. In the first place, when
brake pulley $3 embraced by opposite brake bands
22 which are contracted to braking position or ex
panded to inactive position by means of a verti
il) cal spindle 23 carrying at its upper end a crank
arm 2l, which is connected by intermediate link
members with a crank arm 2li secured to the con
trol shaft i9 which carries the hand control or
starting wheel lga. Since the details of this con
trol mechanism are explained in my copending
application Serial No. 732,114 and are not herein
claimed, it will suffice to explain how the control
is exerted to energize and to stop the centrifugal.
Assuming one of the centrifugals to be at rest af
ter having been unloaded so that it is ready to be
re-charged, the attendant throws the hand wheel
I5!a and the control shaft I9 in a clockwise direc
tion, thus effecting at the same time the releasing
of the centrifugally actuated clutch shoes from
their inactive position to their active position in
engagement with the pulley rim 8. At the same
time, through the crank >arm 2E) on that shaft and
the crank arm 2| secured to the vertical brake
spindle by intermediate link connections, the
30 brake shoes are freed from engagement with the
brake pulley 43 and the centrifugal begins to ro
tate with increasing speed. During the initial
part of starting the centrifugal in operation, a
charge of sugar is loaded into the centrifugal bas
ket 135 in accordance with well known practice and
rapidly builds up into a ring or wall of even thick
ness inside the basket. At the same time, through
another connection at 26, the timing mechanism
is started which controls the timing of the differ
40 ent operations of the centrifugal, as explained in
my copending application mentioned above.
Through the timing control, after a given inter
val of acceleration of the centrifugal, the spray is
turned on for a further time regulated interval
and, the centrifugal, still accelerating, the mois
ture is rapidly expelled and the sugar dried to the
desired degree. Next the control shaft 9 is re
leased and returned to initial position by means of
the torsion spring 2l, and practically at the same
instant the line shaft clutch is released and the
brake is set to stop the revolution of the cen
It will be noted that bevel gear 30 of the driv
ing units is of relatively large diameter in com
parison with the bevel pinion 3| secured to the
underneath transmission shaft. No exact ratio
is prescriptive, since the gear ratio will vary ac
cording to the type of po-wering means used to'
drive the centrifugals, but in practice very satis
60 factory results are obtained in a general arrange
ment of the type illustrated by driving the line
shaft at from 400 to 450 R. P. M. and making
the ratio of gears approximately 31/2 to 1, or
slightly greater. Thus there is a large diameter
of driving gear and a correspondingly large di
ameter of clutch pulley which, in View of the
special type of power transmission, results in a
very rapid and powerful pick-up without shock
or jolt or chattering. Speeds are obtainable with
70 this construction and arrangement that could be
only attained at great difficulty and at much ex
pense through an overhead directly-connected
motor, or by means of the usual quarter turn
driving belt. The variability of powering means
75 and gear ratios .and consequently, of speeds and
shown at 28 may be a V-belt driving pulley or a
several machines are running and one is stopped
for unloading the momentum of the active ma
chines acts measurably as a ñy wheel to accel 10
erate the pick-up of the inactive machine when
it is started in operation. Moreover, when the
machine is disconnected from the line shaft, the
braking action is more economical because there
is no oversize motor of large mass to be retarded
by the brake, as in the case of a directly-con
nected centrifugal drive. Both the clutch pulley
8 and the brake pulley 43 are readily provided
with a water cooling circulation so that exces
sive heating of these frictional parts is prevented 20
and injury to the driving belt or to an overheated
motor is avoided. The casing 5 makes a com
plete enclosure for lubricating oil, so that there
is no objectionable heat generated by the driving
gears, and as the driving coupling between the 25
spindle 32 and the basket shaft of the centrifugal
takes place at the level of the center of gyration
no heat is generated at that point.
The apparatus disclosed and claimed in the
present application is particularly well suited for 30
use in practicing improved methods of centrifug
ing sugar which involve subjection of massecuites
and magmas to high centrifugal forces and novel
control over` the acceleration of the centrifugals,
together with control over other treatments con
nected with centrifuging, to secure most eñicient
elimination of syrups and improved results from
washing and syrup-seperating operations. It is
also well suited for other types of treatment, on
mixtures of sugar crystals and syrup and in other
fields where efficient separation of constituents of
mixtures may be effected by centrifugal force.
The arrangement and construction of appara
tus disclosed in my prior Patent No. 1,826,675,
while effective at the lower centrifugal speeds in 45
common vogue at the time said invention was
made, is not suited for operations involving rapid
acceleration to high speeds such as I have actu
ally obtained with the present invention, partly
because the energizing clutch used on the line 50
shaft was of the wedging or clamping type so that
when the clutch was set to active position it
would result in so suddenly gripping the driving
gear to the line shaft that it was necessary to use
a slip clutch intermediate the vertical transmis 55
sion shaft and the centrifugal, and a slip clutch
of this type would involve too much lost motion
to accelerate the loaded centrifugal quickly
enough to make possible the attainment of such
high speed within the time limited as is ,effected 60
by my present construction. It will be noticed
that when the driven member of the clutch on
the line shaft is energized in the present con
struction the further transmission of power to
the centrifugal itself is effected through positive
coupling means.
It is therefore highly important
when rapid acceleration is employed that the
pick-up of the power transmitting means should
be very smooth to avoid breakage of the gears
from any sudden powerful shock such as might 70
be caused by the sudden gripping or Wedging of
the clutch mechanism employed in my earlier
type of construction.
I recognize that particular parts and details of
construction of the improved driving means for 75
centrifugal machines may be substituted by
equivalentsv and' in'n'ia'ny` instances omitted -alto
getherwithout sacrificing advantages of the in
vention. I- therefore desire' that the' invention be
accorded :a scope commensurate with the spirit
of the specification as restricted only by the re
quirements of the claims.-
Whaty I claim' is z‘
1. A'driving mount for centrifugalsv embracing
in combination with an overhead horizontal con‘-‘
tinuously rotating line' shaft-,'.a'series of gyratory
centrifugals suspended beneath it `and a series ofv
vertical non-gyrating transmission shafts inter
mediate the centrifugals and the line shaft,
15 means for positively but ñexibly coupling the
transmission shafts with their respective cen
trifugals to cause their rotation in unison and
drive transmitting mechanism foreach centrifu
secured to the shaft section, a vertical transmis
sion shaft mounted in fsaid casing-and carrying
a 'relatively small bevel gear in mesh with said
large bevel gear,_-‘ said transmission shaftbeing
provided with means for positively but flexibly
coupling it with anvunderneathsuspended cen
Y 5. A driving mount for v_centrifugals embrac
ing a' single- b‘ed plate'providedat its opposite
ends with upwardly projecting anti-friction bear
ing s'uppolftìrlg members, a>~ horizontal vline shaft
section mounted thereinI _and'provided with means
for coupling it Etoîaïsi'm'ilar adjacent section, said
bed' plate _being provided with a depending socket
hanger _forfthe-s'u's'pension of agyratory centrif
ugal and' being also lprovided with upper and
lower'anti-fri'ctien bearing members' for support`-`
ing a vertical Vdrive¿transmitting shaft having
gal comprising centrifugally actuated clutch
flexible coupling connection- with the centrifugal
20 shoes having pivotal connections with the line
shaft to revolve Ytherewith and retractable at
suspended ben'eatlr'it, a centrifugally actuated
clutch,mounted- upon saidv horizontalv shaft to
willl to inactive position while revolving, a clutch*
pulley> andV a connected gear element loosely
mounted on the line shaft .and arranged to> be
25 energized at a- progressively accelerating speed
when the clutch shoes-are released from retracted
energize atwil'l aï largey beveliigear also'mounted
on said shaft-»said gear 'having driving connec-
position, and a gear secured" tothe transmission
shaft in' mesh with the aforesaid gear.
_ 2,-, In a driving mount for suspended gyratory
centrifugals the combinationvwitha continuously
rotating line shaft, a centrifugal clutch member
comprising centrifugally actuated clutching
vertical non-gyratory' transmission shaft below
connection with‘arbevel gear train, and a line
the line shaft having positive but flexible cou
pling connection with a centrifugal suspended
shaft powering element located intermediately of
the'series of centrifugals, thereby permitting the
gal flexibly coupled together, each section being
a centrifugallyv actuated clutch mounted on each
section, the driven memberof which has driving
centrifuging operationsto be continuously ’per
mesh with the aforesaid large gear. _,
formed `by the centrifugals on one side of the
poweringV element while centrifugals on the other
side thereof are inactive.
~3. A driving'mount for centrifugals'comprisingv
acontinuously running horizontal line shaft and
centrifugal comprising' a non-gyratory - transmis~
a series» of gyratory centrifugals suspended at a
' distance >below said shaft, the line shaft compris
ing a series'of individual sections coupled together
one of the supports for the anti-friction bearing
supporting saidv horizontal shaft.
6.v A driving mount for centrifugal machines
embracing in combination a series of suspended 30
gyratory centrifugals,v> an overhead line shaft
comprising individual sections for each centrifu
provided with its own individual bearing support,
end to end by flexible couplingmembers, ar drive
tion with a relatively `sin'all gear secured to said
transmission shaft“,I |said 'gears 'and' transmission
shaft being mounted inv a' hollow `casing forming
members-connected to the shaft for rotation in
unison therewith, and a driven friction pulley
loosely mounted upon the shaft, a relatively large
bevel gear securely connected with the pulley, a
beneath in coaxial alignment therewith, and a
relatively ,small bevel gear secured to the upper
end ofv said transmission shaft and in constant
transmission mechanism comprising avertical
, 'l'.` Driving means for a suspended gyratory
sion shaft> co-"axially arranged above the'centrif
ugal and flexiblyec'oupled therewith, and an over
head', continuously rotating horizontal power
shaft having interruptible driving connection with
non-gyratory shaft arranged intermediate the
line shaft and the centrifugal and having flexible
but positive driving coupling'with said centrif
ugal, a gear train 4comprisingva relatively large
the transmission'shaft by means of a centrifugal
clutch device mounted on the` line shaft, the
driven member of which clutch/.is directly con
nected with a -bevel gear transmission train pro
portioned to transmit from the line-shaft to the*
bevel‘gear- loosely revoluble about 'a section of
transmission shaft multiple speed rotation.
the line shaft and meshing with a relatively small
8. In a driving unit for a suspended gyratory
centrifugal, the combination of a driving member
rotatable about a substantially horizontal axis,
a vertical non-gyratory transmission shaft inter
bevel gear on the transmission shaft, and a ro
tatable driving member connecting said gear
train with a centrifugal clutch mechanism car
60 ried by the line shaft section upon which the large
bevel gear is loosely mounted.
4. A driving mount for centrifugals embrac
ing in its construction a supporting bed plate
provided at its opposite end portions with axially
aligned anti-friction bearings for supporting an
` individual section of a line shaft, the support for
one of said anti-friction bearings comprising a
hollow casing in which is mounted a relatively
large bevel gear loosely revoluble about the line
70 shaft, a clutch pulley mounted outside of said
casing and adjacent thereto and secured to said
gear by means of a connecting loosely revoluble
sleeve, centrifugally actuated clutch shoes re
tractably mounted interiorly of said pulley and
having pivotal connections with a driving spider
connected with the driving member by bevel 60
gearing, a gyratory centrifugal basket-carrying
shaft suspended for gyration and rotation about
a center in coaxial alignment with said trans
mission shaft, and flexibly interlocking coupling
members for positively transmitting rotation to 65
the basket lshaft at substantially the level of the
center of gyration.
9. In a driving unit for a gyratory centrifugal,
the combination of a gear casing having bearing
supporting openings bored at right angles to 70
each other, anti-friction shaft bearing elements
mounted in the respective bearing openings, a
horizontal rotatable driving member supported
in one bearing element, a vertical non-gyratory
transmission shaft revolubly mounted in another 75
bearing element, a centrifugal basket spindle sus
pended to gyrate and rotate about a center below
said vertical shaft and in coaxial alignment there
with, and flexibly but positively interconnected
coupling members secured to the transmission
shaft and spindle for positively transmitting rota
tion to the basket spindle at substantially the
level of said center of gvration.
10. Apparatus for driving a series of suspended
gyratory centrifugals comprising a common line
shaft located adjacent a plurality of centrifugals
of a series, means for powering said line shaft,
a driving unit intermediate the line shaft and
each of said centrifugals, said driving unit com
prising a vertically extending transmission shaft,
a driving member rotatable about an axis at an
angle to the axis of said transmission shaft and
intermeshing gears connecting said transmission
shaft and driving member together for simul
taneous rotation, means positively and constantly
coupling each of said transmission shafts with
a gyratory centrifugal spindle, and power trans
mitting means ìnterruptibly connecting each of
said rotatable driving members with said line
shaft to transmit power from the line shaft
mission shaft supported lon bearings on another
of said seats and extending outside the casing at
right angles to the driving member, a .suspended
gyratory basket-carrying spindle, means flexibly
but ,positively and constantly coupling the ex
tended portion of said shaft with said spindle,
and a pair of accurately intermeshing bevel
gears within said casing including a gear securely
fastened to each of said driving member and
13. In a driving unit for a gyratory centrifu
gal, the combination of a mounting and enclos
ing casing for the unit made of upper and lower
mating unitary sections, the lower section form
ing an integral bed supportffor other parts of
the unit and having footings for anchorage to
supporting framework abovea suspended gyra
tory centrifugal, said casing having precisely ma
chined openings with their axes in angular rela
tion, a non-gyratory transmission shaft extend
ing vertically into the casing through one of said
openings and maintained in accurate position
by spaced anti-friction shaft bearings seated in
parts of the casing, an underneath gyratory bas
ket-carrying spindle, means outside the casing
through said driving units to said spindles.
positively and constantly coupling said shaft with
l1. In a driving unit for a gyratory centrifugal,
the combination of a casing having seats for shaft
bearings with axes at an angle to each other,
anti-friction shaft bearings mounted in said
said spindle, a bevel gear secured to the shaft
within the casing, a rotatable driving member
extending into the casing at an angle to said
seats, a horizontally extending rotatable driving
member supported on bearings in one of said
seats and extending outside of the casing, the
extended portion of said member embodying
shaft through another of said openings and main 30
tained in accurate position by other spaced anti
friction bearings seated in parts of the casing,
said driving member embodying means outside
the casing for connection toI power transmitting
means for positive connection with power trans
mitting means, a vertical non-gyratory trans
mission element supported on bearings in an
other of said seats and extending below the driv
ing member at an angle thereto, means flexibly
but positively and constantly coupling the ex
tended portion of said element with said spindle,
means, and a second bevel gear secured to said -
and accurately intermeshing gears within said
casing including a gear securely fastened to each
of said driving member and transmission element.
common line shaft for the centrifugals of the
group, powering means for revolving the line
12. In a driving unit for a gyratory centrifugal,
the combination of a casing having seats for
shaft bearings with axes at right angles to each
coupled to each spindle, each unit including a 45
train of intermeshing gears and a horizontally
rotatable drive member inside the casing in pre
cise meshing relation with the bevel gear on said
14. Driving means for centrifugal machines
comprising a group of centrifugals each having a 40
suspended gyratory» basket-carrying spindle, a
shaft, a driving unit positively and constantly
extending rotatable driving member secured to
other, anti-friction shaft bearings mounted in
one of said gears, and means ìnterruptibly con
said seats, a horizontal rotatable driving member
supported on bearings in one of said seats and
extending outside of the casing, a pulley for
transmitting power to the unit, disconnectible
coupling elements on the extended portion of said
necting each of said driving members with said
line shaft, said connecting means being operative
when actuated to establish progressively increas
ing speed transmitting connections between the
driving member and said pulley fastening the
same together, a vertical non-gyratory trans
line shaft and each driving unit as well as a
full speed connection therebetween .
Patent No. 2,128, 575.
August 50, 1958.
It is hereby certified that error appears in the printed specification
of the above numbered patent requiring correction as follows: Page 6, first
column, line 59, claim ll, after> the comma and before "means" insert the
words and icommflai a suspended gyratory basket-carrying spind1e,; and that
the said Letters. Patent should be read with this correction therein that
the same may conform to the record of the case in the Patent Office.
Signed and sealed this 15th day of December, A. D. 1958.
Henry Van Arsdale
Acting Commissioner of Patents.
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