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Патент USA US2131441

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Sept. 27,/1938. _
o. vH.„.|UNG ET A1.-
Filed June 6, 1935
[Iscar H-Jung 'd
F'- E-.HEff Elfìn :LEP
Patented Sept.v 27, 1938
- linger, Milwaukee; .Wist '
, Applicate@ .lunga isstgjsepialLNo.. 25,2625
This invention. appertiains . to:> oilers, . and.. more.
particularly to a. novel lubricatingdeyice fon'the.
electric motors voffthefabove character, ,which will-
bedurable and eiîicient.iniuse,»one~that >will be
bearings of. the shafts oielectricmotora andthe.: simple.
andleasy` to. manufacture, andeneiwhich.
Considerable difficulty is. encountered inthe
use of oilbearings ofI the. type'commonly` ern:-y
ployed` onv electric motors, possibly> dueqto- theA
smallquantity ofv oill contained therein, andthe
lo, fact that the amount of -oil .inthe bearings cannot`
i be seen by an observer... k.Consequentlägq these.
canlbe placed upon..the market andfincorporated
withlanfelectric motor. ata small cost.
5: I
With these and otherobjects in View., the inven
tion; consists in: the novel construction, arrange
ment„and.formation„of parts, as will be. herein-V .
after- more specifically described. claimed, and f.
bearings frequently run..dry,. causing the. ruina illustrated inthe acoo panying.drawingjnwhich 10(
tion ofthe motor.. The bearings whenñlledwith
Figure lisasidefelevation .of an electric motor
cil also. tend tofeed the. oil;too,fast,
showing-.our- improvedlubricating device associ-v
* '
It is therefore. one of._the¿pr1mary» objects» of;
our invention toprovide an oilingìdevice, embody-`
ing reservoirs .whichwill- hold a-.-relatively,~-large
quantity of oil, so thatthe bearingsv willebe prope
20 erly lubricated-over aigreat‘:lengthoiv time,..and.
in which the amount-off oil .in.~.the reservoirs can,
be readily seenfat: all jti_1nes»...»_ c
Another salient. object» of our inventionY is.- the
provision'of novel means ,forîffeeding the.-oil~:to.
25 the bearings, in direct' accordanceïwiththeneed
of the bearinggandtheamount of use of the mo
tor x and» for, withdraw-ing;v surplus oil from the
bearings back into the reservoir, whereby all
waste of'oil is eliminated.
A further object of our invention is the provi
sion of a lubricator of the thermo capillary type,
so constructed and arranged that the oil will be
supplied according to the heat of the bearing and
the amount of oil contained in the bearing.
A further object of our invention isthe provi
sion of a lubricating device embodying an oil
reservoir formed from glass, or otherrtransparent
material, having a gooseneck for connection with
the usual bearing of a shaft, a Wick being em
ployed for feeding the oil from the reservoir to
40 the bearing by capillary attraction.
A further important object of our invention is
the provision of means for arranging the o-il res
ervoir adjacent to the bearing of the shaft, where
by the heat from the bearing and motor will be
5 transmitted to the reservoir for maintaining the
Figure 2~-is atop planview. ofan electric motor, 15'
showing-the improvedtlubricating@device asso'ciat- '
Figure 3l is -an.Y enlarged detaiLvertical.- section
onf the line.
Ythe 3-r3v-of.
arrows, Figure
ingthe association. of. the gooseneckwith Tthe -con
ventional .» bearing: of. a inotor.
lfteferring.> tol the drawing in Y. detaiL. whereinl
similar reference> characters designate corre- à „
spending» partssthroughout the several views, .the ¿o
letten M=generally¢indicates afmotor, and L.¿our`
improved lubricating device therefor.
The motor M has merely been illustrated to
show one use of our improved lubricator, and it
is to be understood that the lubricator can be 3o
employed with various types of bearings and mo.
tors. As shown, the motor M includes the rotat
able armature shaft 5 suitably supported inv bear
ings 6 carried by the easing ‘I of the motor. The
bearings 6 are provided with suitable oil ports 8, 35
through which the oil is introduced.
Our improved lubricating device comprises an
oil reservoir I0 for each bearing, and these reser
voirs are preferably formed from glass, or other
transparent material, so that the amount of oil 40
contained therein can be readily seen, but it is
to be understood the reservoir can be made from
any desired material, such as metal. As shown,
the reservoir can be in the nature'ofV bottles,=if
oil in a free flowing fluid condition.
so preferred, and the same are provided with 45
provision of an adjustable bracket for receiving
two or more of the improved reservoirs, whereby
parison to the conventional motor bearings 6.
A still further object of our invention is the Y threaded necks I I. Obviously, the reservoirs I0
50 the reservoirs can be applied as a unit to the bear
ings of a motor, and whereby displacement of the
reservoirs relative to one another will be pre
A still further object of our invention is to pro
55 vide a thermo capillary lubricating device for
contain a relatively large quantity of oil in com
~ The necks II of the reservoirs I I) are closed by
threaded caps I2, and a gasket I3 is preferably 50
interposed between the caps and the necks to
form an air-tight seal.
While We have shown
the caps I2 threaded'on the reservoir, it is to be
understood that the caps can be secured in place
in any desired way, and in fact the closures can 55
Vbe permanently secured in place at the time of
filling of the reservoir. The axial centers of the
caps rigidly support a conductor tube I4 of a
substantially inverted U shape to form a goose
neck. The depending free ends of the tubes I4
are inserted within the oil ports 8 of the bearing
6, as clearly shown in Figure 3 of the drawing. ’
A wick I5 is inserted in each tube, and is of
sufficient length to extend into the bottoms of
10 the oil reservoir I_û. Obviously, according to the
illustrated form of our invention, the reservoirs
I0 can be readily filled with oil by merely'remov
ing the tubes from the bearings, and unthreading.
~ the caps I2 from the necks of the reservoirs.
The ,
flow of oil is controlled by restricting the bore of
the tube I4 with more or less strands of- wicking.
We prefer to rigidly connect the oil reservoirs
by the bearing and motor maintains the oil in .
the reservoirs in a free iìowing> condition, in View
of the close proximity of the reservoirs to the
bearing and motor. n Thus, when the motor is in
use, and the bearings and motor heat up, a
greater quantity of oil will be supplied to the
It is to be noted that syphon action takes place,
when the air and the oil in the bottle have cooled.
The'fsyphon action then operates to draw the sur
plus oil Vin -the 'wick andbearing back into the
reservoir, -due to the decrease in the pressure
within the bottle.
_With enough strands in the tube, the oiler can
vbe placed in the oil hole 8 vertically. But with 15
this arrangement oil cannot be drawn back into
the bottle if there is a surplus' of oil in the
I0 together so that the oil reservoirs for one 'motor- bearing
`We' areen bled to control the size of the drops
can be handled as a unit, and so that displacement
-of oil f_ed into the bearing by varying the interior
20 of the reservoirs relative to one anothernwillbe diameter of the tube I4. Thus, the larger the
prevented. To connect the reservoirs IU together,
we may employ an adjustable -bracket I6. This
bracket I6 is of a substantially U shape 4in plan,
therein, and consequently the drop of oil will be
directed legs I9, and theoverlapping arms 2B,
larger ythanv that of a tube with a very small
From the Aforegoingdescription, it can be seen
which are adjustably connected together in any
preferred manner, such as by a bowed resilient
metal loop 2I. The overlapping arms are slid
amountì‘of oil to a bearing in direct accordance 30
and includes independent like companion sections
rI’I and I8. The sections’include the inwardly
bore of the tube," the more wicking can be placed
the slots in the resilient loop, and the
30 through
resiliency of the loop frictionally holds the arms
together in any preferred adjusted position. The
forward ends of the legs ISI carry resilient> jaws
22 for gripping and holding the oil reservoirs IIJ.r
By having the sections I‘I and I8 adjustably con
35 nected together, the oil reservoirs I0 can be con
nected with motors of different sizes. It is also
proposed to make the brackets I6 off‘ductile’ma
terial so that the metal can be readily bent to
to the conñgu'ration of thernotor, and1
to extend around obstructions onthe motor. v
We have found that the lubricating device con
structed in accordance with our invention will
effectively feed the oil in proper quantities, and
at lthe proper time, without any waste of oil.
The wick feedsthe oil ‘in accordance with the
dryness of the bearing, and the heat generated
that wefh‘ave provided a Vthermocapillary lubri-A
cating device of exceptionally simple and durable
form, which will effectively supply the desired
with the needof a bearing.
Changes in details may be made without de
partingfrom the spiritor the scopeof our inven
tion, but What we claim as new is:
A thermo capillary lubricator device for bear 35
ings comprising a pair -of oil reservoirs, caps de
tachably associated 'with said reservoirs, conduc
tor 'tube'sf'carried by the reservoirs, oil feeding
wicks‘ extendingthrough the tubes and into the
reservoirs, and an adjustable bracket connecting 40
said reservoirs together including a pair of like
companion sections having a pair o_f inwardly di
rected legs, anda pair of overlapping arms, means
adjustably connecting said arms together, and
clamps on said legs receiving the reservoirs.
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