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Патент USA US2133544

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Oct. 18,1938.
. ‘
J_ K, KQLB
2,133,544
DEVICE FOR EXAMINING LIQUIDS
Filed June ‘21, 1935
Fig: 5.
23%
Z
Fijél‘.
INVENTOR
Patented Oct. 18, 1938
2,133,544
UNITED STATES PATENT OFFICE
2,133,544
DEVICE FOR. EXAMINING LIQUIDS
John K. Kolb, Detroit, Mich.
Application June 21, 1935, Serial No. 27,778
4 Claims.
(01. 88-14)
The objects of my invention are to provide a
readily portable means of quickly determining by
visual inspection the condition of the motor oil
of an internal combustion engine, and using a
sample holder that is inexpensive and of such de
the cover I6, which has openings above and‘ I‘
below at both the right and left sides. The lower
openings are rectangular, as shown at I5, for the
aforementioned electric displays.
Appropriate
wording for the sign at the right, but not shown
in the drawing: “Clean oil reduces wear”. The
exact wording of either. sign is of no importance
to the invention itself.
5 pressed lightly between the ?ngers, readily re
ceiving a few drops of oil from the bayonet gauge
which is stock equipment on motor cars, and
eliminating the need of additional facilities to
make the test.
£15
.
The invention is illustrated by the accompany
ing drawing, in which:
Figure 1 is a front view of the oil examiner, the
dotted line indicating the position of the sample
holder at the time of examination. Right and
20 left halves of the oil examiner are similar.
Fig. 2 is a top view partly in section of the oil
examiner.
>
Fig. 3 is an end view, as seen from the left of
Fig. 1.
25
>
Fig. 4 shows the sample holder.
Fig. 5 shows a top view of the sample holder
when opened by slight pressure of the ?ngers.
Referring more in detail to the drawing, Figures
1, 2 and 3, the following description is similar for
3 O both right and left halves: The case I is a metal
box, having a handle 2 at the top. At the back
of the case are mounted two dry cells 3, insulated
from the case I by insulating ?ber 4. A metallic
strip 5 attached to ?ber insulation 4, is used as a
35 conductor from one of the battery terminals. The
insulating ?ber partition 6 has a metallic strip
1 attached to it. This strip ‘I is made in the shape
of a right angle, forming a light spring contact
40
at one end with strip 5, and extending downward
to form a contact with the terminals of electric
bulbs 8 and 9. These bulbs are threaded into
re?ectors I 0 and II which are stamped out of a
single piece I2, side extensions of which form a
contact with case I, as at I2, Fig, 2. The sliding
45
, switch I3 is shown in its off or neutral position in
Fig. 1. If moved to the left, the circuit is com
pleted with the left battery and the two electric
bulbs in the left half of the box are lighted. If
moved to the right the two bulbs at the right,
50 shown as 8 and 9, are lighted. The piece of
ground glass I 4 is used to diffuse the light from
the electric bulbs and also act as a support for
the electric displays, as shown at I5, and also in
front of electric bulb 9.
55
The contents of the case are held in place by
The upper openings in the cover I6 are circu
lar and permit light to pass to the extensions I1,‘
.10
which have slots I8 in their upper halves.
dotted lines in Fig. 1 show the position of the
sample holder when in position for examination,
in the slot of the left extension. These exten
sions I1 are threaded to receive the adjustable,
members I9, which in turn hold the piano-convex .15
lenses 20, held in position by stops 2|.
7
Referring particularly to Figures 4 and, 5, the
sample holder 23 is shown folded ‘?at in Fig. 4.
The shape and relative size of the sample holder
may vary, but its preferred form is that shown 20
in Fig. 4, because only a few drops of oil from
the bayonet gauge are necessary to make; a splen
did test._ Fig. 5 shows a top view of the sample
holder when opened under slight pressure between 25
the thumb and fore?nger, providing a funnel
opening. As previously stated, the sample holder
is made of transparent material, such as Celluloid
and provides an opportunity for any oil com
pany that might sponsor the test, to display their 30
insignia for advertising purposes, as in the cen
tral position 22.
In general, the operation of the tester has al
ready been indicated. _It is used principally to
make a comparison between used oil and clean, 35
unused oil. With the clean sample already in
stalled, the operator has only to take the used
oil sample from the bayonet gauge of the engine
and insert the sample holder in the proper slot.
By now moving the switch to the left, the light 40
back of the used oil sample will at once make
the color of the sample quite evident. Further,
particles of dirt and other abrasive matter cling
ing to the side of the sample holder are plainly
visible. If the switch is now moved to the other 45
position, the light shines behind the clean sam
ple and the comparison is rendered obvious.
After use, the dirty oil sample can be disposed of,
and a clean new sample holder used for the
next test, eliminating the need of cleaning.
It is immaterial whether the illuminated dis
50
plays be above or below the samples, and the ar
rangement of other parts may be changed or
parts may be omitted without departing from
65
2
‘
2,133,544
the spirit or the invention as de?ned in the fol- ple of the liquid to be examined comprising a
lowing claims.
I claim:
1. In combination with a device for visually
examining liquids comprising a manually trans-
pair of transparent, ?exible walls connected to
gether along converging peripheral edges and
having another portion of their peripheral edges
separable to form a normally closed mouth 5
portable case having an opening, illuminating
through which liquid can be inserted into the
means positioned within the case, a slot between
the opening and the illuminating means, and
a transparent sample holder comprising a pair
holder, the said walls of the holder normally
being held together due to the inherent ?exi
bility of the said walls, the said walls being sep
of separable transparent walls normally having a face to face contact connected along a portion of their peripheral edges to iorm'a holder
for the liquid to be examined, the unconnected
edges of the said walls forming a mouth through
arable by the application of edgewise pressure to 10
the said walls to open said mouth whereby upon
release of said pressure the walls tend to come
together and spread the liquid into a thin ?lm,
the said converging edges of the holder engag
which the liquid can be inserted into the holder
when the walls are separated and spread out between the walls into a thin light-transmitting
?lm whereby the holder and the liquid can be
ing the ends of the slot to support the holder in 15
the case between the observation opening and the
illuminating means whereby light can be passed
through the holder and-liquid and the liquid
inserted in the said slot and light passed through
the holder and liquid to permit visual examina‘tion of the said liquid.
visually examined.
4. In a device for examining liquids, a case 20
having an observation opening therein, illumi
2. In a device for examining liquids, a case
nating means within the case and a slot in a
having an observation opening therein, illumi-
wall of the case between the illuminating means
nating means within the case and a slot in a
and the observation opening, aholder for a sam
wall of the case between the illuminating means
ple of the liquid to be examined comprising a 35
and the observation opening, a transparent hold-
pair of transparent, ?exible Celluloid walls nor
er for a sample of the liquid to be examined,
mally having a face to face contact connected
the said sample holder comprising a pair of tri-
together along converging peripheral edges and
angular yieldable transparent walls normally
having another portion of their peripheral edges
tending to have a face to face contact connected
along two of the converging edges and the other
two edges forming an opening through which
the liquid can be inserted in the holder when
separable to form a mouth through which liq- {30
uid can be inserted into the holder, the said
walls of the holder normally being held together
due to the inherent ?exibility Of the said walls,
the walls are separated whereby the walls force
the liquid into a thin ?lm, the said converging
edges of the sample holder engaging the ends
of the slot to support the said holder during
examination whereby light may be passed through
the transparent holder and liquid and the liquid
the said walls being separable by the applica
tion of edgewise pressure to the said walls to 1535
Open Said mouth whereby upon release of Said
pressure the walls tend to come together and
spread the liquid into a thin ?lm, the said con
verging edges of the holder engaging the ends
visually examined.
of the slot to support the holder in the case '40
'
3. In a device for examining liquids, a case
having an observation opening therein, illuminating means within the case and a slot in a
wall of the case between the illuminating means
and the observation opening, a holder for a sam-
between the observation opening and the illumi
nating means whereby light can be passed
through the holder and liquid and the liquid
visually examined.
JOHN K. KOLB.
I45
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