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Патент USA US2406505

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Au'g- 27’
I I
T. G. MYERS,
-
BEARING
surrom'
.
2,406,505
‘
Original Filed April 11, 1939‘
[02
BY
7
v
_
7 ATTORNEY
I Patented Aug. 27, 1946
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~ ' 2,406,505
UNITED STATES PATENT OFFICE‘
Thomas G. Myers, Los AngelesC'alif, assignorjto
U. S. Electrical Motors, Inc., Los Angeles, Calif.,
a corporation of California
~ Original application ‘April 11, 1939, Serial No;
267,239. Divided" and this application March
29, 1943, Serial No. 480,959 a
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10' Claims. (01. ‘ate-1st) ,
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This invention relates to bearing supports for
Vertical shafts and lubrication thereof, such, ‘for
a corresponding upper coupling member 8, as, by
example, as vertical motor shafts adapted to be
directly coupled to a vertical pump shaft.
This application is a division of an application
entitled “Metered oil control,” ?led in the name
of Thomas G. Myers on April 11, 1939, Serial No.
a cylindrical surface I l formedon the coupling
member 5, and also has a hub portion l2isecurely
fastened to the inner shaft l3 which carries, the
267,239.
the aid ofone or more dowel pins, 9. This cou
pling member 8 has .a ?ange l0 telescopingover
pump runners below the vertical motor structure.
The couplingmember 8,may beheld in place as,
.
The bearings for such shafts are usually of the
for example, by a nut Mthreaded on the end I5
ball bearing type, the balls of which are placed 10 01‘ thefsh'aft I3, a key l6 isbeing ‘provided to
in an oil well, or a little above it. The rotation
prevent the coupling member 8 rotating with re
of the shaft with its attached parts causes. a tur
spect to they shaft, but permitting. relative ‘axial
bulence in the oil such that the oil is passed up-‘
adjustment between them.
wardly through the spaces between the rolling
elements. Often provisions are made to produce
type, having g?anges I‘! and [8 for clamping the
rotor laminations- It co-operates with a stator
a lifting effect on the oil to cause it to pass
through the bearings, as by a rotating element
attached to the shaft.
,
The rotor 'l, is indicated as of thesquirel cage
structure I9 held in a motor frame, which may
.
include the lowerportioni? and upper portion
It is an object of this invention to make it
2! connected as by sheet metal; ‘cylindrical DOT‘.
possible to observe the circulation of the oil dur 20 tion. 22. Portions 2_and,2|, serve,v as by bolts
ing operation of the motor.
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or, ~rivets,,to clamp the stator laminations to
It is still another object of the invention to ‘ gether. The \frame structure 2ll-,-2l-22 may be
provide a drive connection between the motor
appropriately supported on a base member or
shaft and the pump shaft, such that the desired
support 23, adapted to be mounted on top of the
relative axial adjustment of the pump runners 25 ‘pump structure". The upper‘ portion, 21 of the
with respect to the rotor may be accomplished.
frame carries an end bell or bracket 244, which is
It is a still further object of this invention to
shown as provided, with an inwardly directed, de
provide supporting'means for the pump shaft
?eeting member _3_5landv with one or more aper
which will permit axial adjustment of the pump
tures 3,6 for aircirculation. U
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shaft'to be readily accomplished while the pump 30 I In H the present instance ‘the rotary partshof
is in operation, for ensuring that the pump run
the pump, suchkasqpu'mp runners, etc., are ar
ners will be in the optimum axial position with
relation to the other parts of the pump structure. .
ranged to be supported, by,v the aidrof the upper
This invention possesses many other advan
. this bearing structure is of the ball thrustbearing
tages, and has other objects which may be made 35
more easily apparent from a consideration of an
bearing structure of ‘the electric motor. Thus,
type,,including_a seriesof balls 25. The inner
race 26 is ‘shown as carried by a reduced exten
embodiment of the invention shown in the draw
sion 21 vitae eouplinamember 5-, The outgrew
ing accompanying and forming part of the pres
28 is suptortéq'me ‘cylindrical support 29, shown
ent speci?cation. This form, which illustrates
as splines at so in the’interior of a cup-like guide
the general principles of the invention, will now 40 3|, ‘formed integrally with the end bell or
be described in detail; but it is to be understood
that this detailed description is not to be taken
in a limiting sense, since the scope of the inven
tion is best de?ned by the appended'claims.
Referring to the drawing:
The single ?gure is a longitudinal sectional view
of an electric motor structure embodying the
invention, a part of‘ the axial length of the motor
bracket
2,4,-
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,
a,
,,
,
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U
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.
The vertical adjustment‘ ofthe position of the
thrust bearing structurev makes it possible ac
curately to adjust the, position of the pump run
ners supported on shaft i3 below I‘ the‘ motor.
This ‘can be accomplished while the motor is in
operation by the aid ~of‘the' structure now‘ to be
described.
a
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being broken away to reduce the size of the ?gure.
,Thus, the’ upper end of the cylindrical race
In the form of the invention. illustrated, a 50 support ‘29 is exteriorly threaded.’ This thread ,
vertical motor arrangement is disclosed. The
isengaged by a nutQSZ, the lower side of which
rotor structure I of the motor is shown as carried
is in contactwitl'i the upper, ?ange 33 ofv the end
by a hollow motor shaft 2. This hollow shaft is
bell 24, whereby ?ange 33 supports the cylindri
shown as provided with a threaded extremity 3
cal race support 29 by_ the, aid of nut, 32., By
for attaching a coupling member 5, as by the aid 5 rotating the‘ nut 32, the cylindrical support 29
of the shoulder 4 on the shaft 2, and the nuts 6
may be lowered or raised, since this support is
engaging the threaded extremity, coup-ling mem
restricted fromtrotation, by theaid of the spline
ber 5 being secured against rotation on shaft 3 .
by a key 1.
.
.
30. ‘After adjustment, the nut 32 maybe locked,
as 'bywa‘v'screw “engaging split portions of the
The coupling'member 5 is shown as coupled to 160 nut 32, for urging these split portions together
2,406,505
the motor
and thereby ‘clamping the nut against the threads
on the cylindrical support 29.
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operating.
Thus the lever 43 of
the vlubricant is substantially the same with the
‘
motor operating or not.
The upper end of the shaft structure is ‘ar
7
The space 62 extends above the top wall 64 of
-'ranged to ‘be covered by a sheet metal dome-' .
shaped cover 31. This sheet metal cover has a
. the well.
This top wall extends over the entire
well and is joined to the sloping wall 59. This top
lower edge resting upon the top of’ ?ange 33.‘ It
may be provided with several‘ recesses 311 having " 3 wall 63 has several apertures or openings 64’
horizontal walls 38 for accommodation of fasten-7 i ' extending’ through it, across which are disposed
?lter pads 65, of felt or the like. The oilas it
ing screws 381, passing through the walls 38 and
engaging the top ?ange 33.
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p
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.3
enters the space B2.will pass through the ?lter
10
7
a
Provisions are made for providingjai lubricant,.
such as oil, for the thrust bearing structure. For
this purpose a lubricant well 39 is provided _in_ ,7
the bell 24. Thus, a sleeve 40, surrounding shaft‘
2 and extending upwardly past the bearing struc
‘ture, is fastened within the hub 41 .of ?ange 33
‘of'the end bell 24. This sleeve 49 ‘co-operates
with-the exterior wall 42 of bell 24 to formthe
pads ,55 into well- 39; ‘thus, foreign matter is
strained ‘from the lubricant. The top wall 33 of
the end bell 24 may also be provided with a num
ber of openings 66 for inspection purposes, and
15 to permit cleaning and replacement of pads 65.
These openings 65 may be closed by cover mem
bers 61.
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In order to make it possible to view the circula
tion of the oil while the apparatus is in opera
well 39. This well is adapted to carry lubricant
‘to about the level 43, so that the bearing struc
1ture 25-26-—28 is submerged when the motor is
.tion, as wellas to note the level of the oil in the
not operating. Inpthis way, the bearing will not
be‘exposed to corrosion, even over long periods
may be made of some plastic molded material,
of inactivity of the motor.
.
well, whether the apparatus is operating or not,
.a transparent cover 68 is provided.
This cover
such as Catalan, and is shown as threaded'into
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Lubricant may be supplied to well 39 through 25 an interiorly threaded'boss B9 projecting from
the wall 42. Opposite the cover member 68 there
an opening, shown as closed by the 'plug 45 at
is a supplemental aperture or by-pass 19 in wall
the right hand portion of. the ?gure. This plug
42, leading from the space 52, as well as an aper
is accommodated in a threaded aperture 46 in a
sloping wall 41 of a‘recess 48 in the outer wall
42, and carries an extension 49 extending sub
stantially below the normal level '43 of the lubri
cant.
The extension 49 ' functions as a “dip
stick”; for, when the plug andextension are re
‘moved from the lubricant well, the ' depth of
lubricant in the well may be ascertained from
‘an examination of the stick. By providing this
‘recess, external projections such as'plugs are
avoided. The, slanting wall 41 joins the outer
wall 42 and a sloping wall 50 extending above
the lubricant well 39- at the place where plug
45 is located.
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In order to permit oil to pass inwardly of the
guide 3'! to the bearingstructure, one or more
. ‘Wm ‘H leading into the lubricant well 39.
As clearly shown in the drawing, the body of
lubricant extends through aperture ‘H into the
transparent cover 5B,v so that'the levelrof the
surface 43 of the lubricant may be readily. ob
served, and the quantity of lubricant in well 39
35 may be estimatedwithout the necessity of using
the dip stick 45—49. When the motor is run
ning, the rapid rotation of the parts_25--26 of
the bearing structure will create turbulence‘ of
that oil within'the guide 29 and above the plate
52, causing this oil to'rise in space 55. Thence
it is thrown out through openings 59, 60, and GI
into space 62 onto the ?lter pads 65. However,
30 '
apertures 5|’ may be-p-rovided 'at the bottom of
the guide. An oil metering device 52- is supported
appropriately upon an inner'shoulder 53 of the
guide 3|. and beneath the cylindrical support 29.
‘It-may extend radiallyinwardly to contact .with
the sleeve 40, and may be provided with one or
more restricted’ apertures 54 serving as an-oil:~
'metering
device.
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The oil is arranged to ‘pass'through the meter
, 'ing aperturesv 54 into the space between the inner
~and outer'races '26 and 28. Thence the voil is
thrown upwardly by rotation of the bearing ele:
ments 25-26 into a chamber 55 formed between
the depending ?ange 56 of the coupling member 5
and the hub 51 thereof. Also, if desired, a screen
member’ 58 may be disposed beneath the meter
ing device 52.
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' The oil progresses: past the balls 25 into the
chamber 55; thence radially outwardly through
one or more radial apertures 59 in flange 56 and
'~-radial aperturesp?ll in the cylindrical support
29; through apertures 6| in the guide member
3! to a space 62 above the'lubricant well 39.
'By appropriate choice of sizes-of the apertures
59, 69, and BI, the‘ vertical adjustment of the
shaft structure does not interfere with thepas
it is to be understood that the rate of this flow
is controlled by metering openings 54.
I
The passage ofthe oil through pads 65 is rel
atively slow, hence the oil accumulates to a su?i
cient depth‘ in space 62 for a part of the oil to
?ow through the small by-pass port 10 and join
the main body of lubricant in well 39 through the
space provided in cover 68. Thus, by observing
through cover 68, this passage of oil from port
19, the sufficiency of the lubrication of bearing
25—26—28 may be judged.
It sometimes happens that a torque is exerted
on pump shaft 13 by virtue of the water operat
ing upon the pump runners. This torque may
bev in a direction reverse to the normal direction
of operation of the water. It is desirable to pre
vent the pump shaft it‘ from driving the motor
60 shaft 2 in such reverse direction. To obviate
this, a ratchet mechanism is provided.
'For this purpose the upper coupling member
‘8 is provided with a plurality of radial arms 12,
each of which carries a. pawl pin 13. Thesepawl
.pins'13'are intended to co-operate with a series
of ratchet teeth 14 disposed annularly below the
pins 13 and supported as on a collar 15 threaded
into the top of the support 29. The ratchet teeth
sage ofggthe lubricant backto the well 39. -’ The
14, being stationary, will permit rotation of .the
‘coupling member ,8. and,‘ therefore,.of the shaft
lubricantmay be withdrawn at will from the well
‘through an aperture closed by a plug 63. In this .
connection it is to be noted that the amount of
lubricant in the well is large as compared to
ing sides of the teeth for the permitted direction
structure, in but one direction. This is accom
plished by thefact that the lower ends of ‘the
pawl pins 13 arejurged upwardly along the slant‘
the quantity ‘passed through the bearing when 7510f rotation and in .the'vertical guiding apertures
2,406,505
"5
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in the arms 12. A reverse rotation is prevented
metering member 99. 'I'hismetering member, as
by the pins 12 abutting the abrupt shoulders of
before, may be provided with one or more meter
the teeth ‘I4.
In order to prevent the pawl pins 'I3'from being
entirely disengaged from the arms 12, a restrain
ing disc ‘I6 is provided, extending radially from
coupling member 8 and above the pins 13. This
restraining disc 16 limits the upward movement
ing apertures I04.
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Axial adjustment of cylindrical race support 29
by means of nut 32 causes shaft 2, together with
all connected parts, to move axially. Thus, rotor
I is moved vertically with respect to the stator
I9, the axial position of member 9| with respect
to extension 88 is altered, and the bearing struc
of the pins. It may be fastened as by the: screws
‘I '| to an appropriate shoulder formed on the cou 10 ture ‘I8-—‘|9—8Il moves axially in its guide ?ange
8|. Also, shaft I3, which carries the pump run
pling member 8.
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ners, is correspondingly moved. It is, of course,
The lower bearing structure for the shaft as
possible to adjust the relative positions of shafts
sembly is of the radial type. It includes a plu
2 and I3 by means of nut I4, and this serves to
rality of balls 18 and an inner race 19 carried
position the pump runners when the pump is not
by the lower extremity of the hollow shaft 2.
operating, as well as to alter the position of the.
The outer race 80 may be accommodated in ‘a
vertically extending cylindrical ?ange 8| integral
runners with respect to the rotor. However, due
to‘ the various forces exerted while the pump is
with the bottom Wall 82 of the base 23. Flange
in operation, such adjustment of the pump run
8| serves to restrain the bearing structure 18
19-80 radially, but allows the structure to move 20 ners is only approximate; but, by providing an
adjustment means which may be manipulated
freely in an axial direction to accommodate its
while the pump is running, a more accurate ad
position to that of the upper bearing structure
J'ustment of the position of the pump runners is
25--26-28.
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possible, resulting in increased operating ef?
In this case, also, a lubricant well 83 is pro
'
vided having a draining aperture closed by a 25 ciency.
Provisions are made in the present instance to
plug 84. The level 85 of the lubricant is shown
supply a lubricant to the pump shaft bearings
in this instance also as being substantially at
extending below the electric motor. This is made
the top of the races 19 and 80, so that the bear
effective only While the motor is ‘in operation.
ing is submerged in the lubricant when the motor
is not operating.
30 For this purpose a solenoid operatedvalve struc
ture I05 is provided. This valve structure is op- ‘
The top of the lubricant well is formed by a
erated by a solenoid connected to the mains I06,
wall 86 having an upwardly inclined portion 81,
in parallel with the motor mains, and controlled
carrying an upright cylindrical extension 88
by the same switching mechanism. The struc
adaptedto telescope within a space 89 de?ned by
the flange 98 of a guard member 9|. . This guard 35 ture I85 includes a hollow downwardly projecting
threaded extension IIl'l, engaging in a boss I98
member 9| is; carried by the shaft 2. By the
formed in the bottom wall I89 of a recess formed
interengagement of the elements 88 and 98, the
in the lubricant top wall 86. The solenoid plunger
vertical adjustment of the shaft structure is per
III] carries a Valve closure III guided in exten
mitted, while at the same time the lubricant well
is kept covered. In this way, in spite of the rota 40 sion I81, and co-operating with a valve seat II2.
This valve seat |I2 has a port “3 extending be
tion of the rotor structure I, the lubricant. vapors
tween the lubricant chamber 83 and a supply
are not carried off.
chamber H4. This supply chamber H4 is ar
The member 9| has a ?ange-like extension’ 92
ranged to pass oil by gravity through the pipe and
forming a chamber 93 above the balls 18. One
,- ?ttings H5 to the lower bearings, through a drip
or more radial apertures 94 in the ?ange 92 per
device H6. The valve seat H2 is shown in this
mits the passage of lubricant from the chamber
instance as threaded into a Wall II'I forming an.
93 to the lubricant well 83; However, in order
extension of the‘ lower wall of the lubricant
to make it possible to inspect the circulation of
the oil during operation, or to determine the
What‘is claimed is:
quantity of oil in the well at any time, a trans
1. In a device of the character described, a
parent cover member 95 similar to the cover mem
vertical shaft, a bearing structure for the shaft, a
ber 68 is provided; This transparent cover mem
closed frame for said structure, there being a
ber is shown as threaded into the internally
lubricant well communicating with the bearing
threaded boss 96 of the base member 23. The
structure above and below it, said lubricant be
wall for the lubricant Well is provided with an
ing passed upwardly through the structure and
opening 91 opposite the cover 95, and a radial
dropping back into the well, a ?lter device upon
passage 98 is provided in the top‘ wall 86 of the
which said lubricant flows and disposed above the
lubricant well. This passage is in communica
well, and a transparent cover for the frame for
tion with the space above the bearing structure,
wel183.
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‘its outer end opening opposite the cover 95. The
lubricant ?owing back intoethej well 83, after
viewing the lubricant above and below said filter
device.
passing upwardly through bearing ‘|8—'|9--80,
2. In a" device of the character described, a
vertical shaft, a bearing structure for the shaft,
a closed frame for said structure, there being a
circulation can be readily viewed through the 65 lubricant well communicating with the bearing
structure above and below it, said lubricant being
cover 95.
passed upwardly through the structure and drop
An oil metering device 99, similar to that dis
ping back into the well, means forming an openv
closed in connection with the upper bearing, may
passageway from the top of the structure to the
also be provided. Thus, the member 99 is shown
exterior wall of the frame, there being an open
as of disc form and extending‘beneath the bear
ing from the well, and in the exterior of the frame,
ing races '59 and 80. It may be fastened, as by
below said passageway, to pass the ‘lubricant from
screws I88, to the upper surface of the hub IIlI,
the passageway back into the well, and a trans
which also serves to support the sleeve I02 de
parent cover for said wall passageway and open‘
?ning the inner wall of the lubricant chamber
83. A screen I03 is shown extending below the 75 ing, said open passageway being directed toward
must pass through the passage 98, down back of
the cover 95, and through the opening 91. This
a
{2,406, 505
I
the, covertopermitiviewing of the flow of lubri- ,
,
cant through said passageway.
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3. In a support for a vertical shaft, abearing
therefor,_means_forming a lubricant'well about ‘
said structure, means forming a stationary wall
below said structure, said wall having one ' or
structure having rolling elements and races there
more restricted apertures establishing communi
for, means forming a lubricant well about said
structure, means forming a stationary wall be
low said structure, said wall having one or more
cation between the well and the space between
the races, the rotation ofthe bearing parts serv
ingto ,pass' lubricant upwardly through the space
restricted apertures establishing communication
between the races, means forming a passage for '
between the well and thespace between the races,
the rotation of the bearing parts serving to pass
lubricant upwardly through the space between
returning to the well thelubricant which has
passed upwardly through said space, said well
forming means including a transparent member
extending transversely of the liquid level, so
that {said level is visible ,therethrough, ‘and
the races, means forming a passage for returning
to the well the lubricant which has passed up
means forming a supplemental passage forre
‘ wardly~ through said space, and a transparent
member through which the returning lubricant is
visible.
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,
turning part of the lubricant to the well, said
supplemental passage having a‘termination above v
i
the level of the lubricant in the well and visible
_ ,4. Ina support for a vertical shaft, a bearing
structure having rolling elements and- races
therefor, means forming a lubricant well about
, through the transparent member, -
/ ‘8. In asupport for 'a-vertical shaft, a bearing
structure having rolling elements and races there
said structure, means forming a stationary wall ,
, ‘below said structure,_said wall having one or
‘ for, means forming a lubricant wellabout said _
more restrictedapertures establishing communi
structure, means forming a stationary wall below
said structure, said wall having one or more
cation between the well and the space, between
the races, the rotation of therbearing parts serv
restricted apertures establishing communication
ing to pass lubricant upwardly through thespace 2.5 between the well and the space between the races,
the rotation of the'bearing parts serving to pass
between the races, means forming a passage for
lubricant upwardly through the space between
returning to the well the lubricant which has
',passed' upwardly through said space, said well
the races, means de?ning a space above the, well,
said means including a wall above the lubricant
forming means including a transparentmember
extending transversely of ,the liquid level so that 39 in the well, there being apertures,‘ including ?l-‘
said level is visible therethrough, and means to
tering means, in said wall ‘for passing lubricant
fromsaidspace to the well, means for passing
return at least a portion of the lubricant, which
lubricant from said bearing into said space, means
passes upwardly through the bearing, past said
forming a by-pass port above said wall to permit
member to the well, including a passageway di
rected toward the member to permit viewing of :35 lubricant to return to the well,-, and means for
the flow of lubricant.
,
viewing said port.
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9. In a support for a vertical shaft, a bearing
5. In a support for a vertical shaft, a bearing
structure having rolling elements and races
structure having rolling elements and races there
therefor, means forming a lubricant well about
said structure, means forming a stationary wall
structure, means establishing restricted commu
below said structure, said wall having one or
more restricted apertures establishing communi_
said races, means passing lubricant fromrsaid '
for, means forming a lubricant well about said
nication between said well and the space between
well upwardly through said space, a transparent
member in said well forming means extending
transversely of the lubricant level in the well,
as well'as above and below said level, means
tween the races, means forming a passage for
forming a passage for returning to the well the
, returning to the well the lubricant which has
lubricant which has passed upwardly through
passed upwardly through said space, and a trans
parent member through which the returning
said space, and means causing at least a portion ,
lubricant is visible, the capacity of said well being 50 of said returning liquid to pass said transparent
membenwhereby the amount of lubricant in the
large with respectto the amount of lubricant
well and the passage of lubricant through the
passed through the bearing, whereby the lubri
bearing may be determined.
cant level in the well is'substantially constant
cation between the well and the space below the
races, therotation of the bearing parts serving
to'pass lubricant upwardly through the space be
regardless of rotation» of the bearing.‘
6. In support for a vertical shaft, a bearing
structure having rolling elements and races
therefor, means forming a lubricant well about
said structure, means forming a stationary wall
.below said structure, said wall having one or
morerestricted apertures establishing communi
cation between the well and the space between‘
the races, the rotation of the bearing parts serv
ing to pass lubricant upwardly through the space
10; In a support for a vertical shaft, a bearing
55
structure having rolling elements and races there
for,‘ means forming a lubricant well about said
structure, said structure being below the level of
the lubricant in said well, 'means admitting a
restricted quantity of lubricant from the well to
the space'between, the races, the rotation of the
bearing parts causing said lubricant to pass up
wardly through said space, a transparent member
in said well forming means extending transverse
ly of the lubricant level in the well, as well as
returning to the well the lubricant which has 65 above'and below said level, means forming a
passage for returning to the well the lubricant
passed upwardly through said space, means
which has passed upwardly through said space,
formingna supplemental passage for returning
and means causing at least a portion of said
part of the lubricant to the well, said supple-'
returning liquid to pass said transparent mem
mental passage terminating above the level of
the lubricant in the well, and a transparent 70 ber, whereby the amount of lubricant in the well
‘and the passage of lubricant through the bearin
member through which the termination of the
may be ‘determined.
supplemental passage isvisible.
, ‘
THOMAS o. MYERS.
'7. In a support for a vertical shaft, a bearin
' structure having rolling elements and races
7 between the races, means forming a passage for
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