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Патент USA US2411712

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Nov. 26, 194.6.
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'g, A, [)5 GIERS
ELECTRICAL
TOTALIZIRG
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2,411,712
SYST'EM
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Fil'ed Juné 12, 1942
TDTALIZ/NG mm‘
MECHANIC”. comer/m
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2,411,712
Patented 115%.26, 1946
more!)v STATES PATENT OFFlCE'H
' 2,411,112
ELECTRICAL TOTALIZING SYSTEM
Clarence A.- de Giers, Forest Hills, N. Y., assignor
to The Liquidometer Corporation, Long Island
' City, N. Y., a corporation of Delaware
Application June 12, 1942, Serial no. 446,765
6 Claims. (01; 73-313)
This invention relates to electrical totalizing
and telemetric systems.
'
One of the objects of the invention is to pro
vide an electrical system or combination of in
strumentalities for automatically‘ totalizing -»a
number of variables such, for example, as the to
tal number of gallons of liquid in a number of
26. For fuller disclosure and details of a satis
factory form of such indicating instrument, ref
erence may be had to the disclosure of the fol
lowing patent upon which disclosure I rely as
though it were actually repeated here: United
States Letters Patent No. 2,339,021, granted Jan
uary 11, 1943, to Frederick 'J. Lingel, for “Elec
trical translating instruments.”
individual tanks.
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The coils 24, 26, the rotor I8, and the pointer
Another object is to provide a system of the
20, shown and described herein correspond, .re
10
class described wherein the total is indicated at a
spectively, to coils 32, 32, rotor I0, and the point
distance, and in which the receiving station and
er 26, shown and described in the cited Patent
,the several transmitting stations may be widely
No. 2,339,021. As stated, the other parts and
separated, each from the others.
features of construction of the complete indica
Other objects and advantages of my invention
tor
hereof are shown in the said patent. Other
15
will be stated hereinafter or will appear to those
forms of indicating instrument may, however, be
skilled in the art upon reading the following de
scription of the invention and of the manner - . employed.
Each of the transmitting'stations I2, I4, I6 has
and process of making, constructing, and using it,
a plurality of variable impedances, which may be
and I shall also explain herein what I now be
lieve to be the principle thereof, and the best 20 variable ohmic resistances 28, 30; 32, 34; 36, 38;
respectively. Each of the impedances (resist
mode in which I have contemplated applying
ances) is provided with a pair of sliding contacts,
that principle.
'
designated 48, 42, 44, 46; 48, 50, 52, 54; and 56,
Desiring to have it understood that my inven
tion may be carried out by other means and with ‘ 58, 60, 62; respectively. The sliding contacts 40,
other apparatus, and that it may be used in other 25 42 are simultaneously positioned by and in ac
cordance with the ?oat in a tank at station I2.
environments and for other purposes, I shall now
When the ?oat moves toward “empty” position
proceed to describe what I now consider to be a
the contacts 48, 42 are thereby moved to the left
preferred form of apparatus for practicing the
and when the ?oat moves toward “full” position,
invention.
\
"so the contacts 40, 42 are thereby moved to the
Referring to the drawing:
.
right. The contacts 48, 50 are similarly operat
Fig. 1 is a diagrammatic view ‘showing the elec
ed by the ?oat in a tank at station I4; and the
trical connections of systems embodying my in
contacts 56, 58 are similarly operated by the ?oat
vention, and
1 I
in a tank at station I6. The contacts 44, 46; 52,
Fig. 2 is a somewhat diagrammatic fragmen
tary view showing the same electrical systems 35 54; and 66, 62; are manually settable contacts,
whose purpose will presently appear.
and also showing the transmitter operating ap
The resistances 28—32—36—38-—34--30 are
paratus.
‘
.
electrically connected in series, across a suitable
The system illustrated includes a receiving sta
source of E. M. R, such as a D. C. line 68, 18;
I2, I4, ‘ I6. At the indicating station there is lo 40 manually adjustable end resistances 64, 66 being
provided for a purpose also presently appearing.
cated an indicating instrument of the ratio type.
The coils 24, 26 are connected in series across
This instrument,~ as shown, has a rotor I8_which
tion Ill, and a plurality of transmitting stations
the same line 68, ‘I8 and the junction of the two
is made of “Alnico” ‘and permanently poled
coils 24, 26 is electrically connected to sliding
across a diameter and is carried by the ‘shaftto
which a pointer 20 is secured; a stationary'scale 45 contacts 56, 62, above described, by a conductor
22 being provided for the pointer. Two stationBefore the system is used, the following ad
ary de?ecting coils 24, 26 are mounted with their
justments are made, if necessary. With the ?oat
' ?ux axes at right angles to the axis of the rotor
at station I2 in its lowest 0r empty'position, the
"I__8; there being an angle of 120° between the
contact 40 is manually adjusted until there is
?ux. axes of the coils. The angular position of
‘zero resistance between the contacts 40 and 44.
the rotor I8, and consequently the pointer 20,
The contacts 44, 44 will now be in their extreme
will be determined by the relative strength of the
left hand positions. The ?oat at station I2 is
currents in the coils 24, 26. In other words, the
now raised to its highest or full position and the
rotor position will be determined by the result
contact 46 is manually adjusted until there is.
ant of the magnetic ?uxes, set up by the coils 24,
12.
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2,411,712
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zero resistance between the contacts 42, 46. The
Also when any ?oat moves to decrease the resist
ance between the points 44 and 58, it simultane
contacts 42. 46 are now in their extreme right
hand position. Similar individual adjustments
ously causes the resistance between the points
are made at transmitter stations I4 and Hi.
It will be assumed that the travel of the ?oat
at any transmitting station is the same as that at '
any other transmitting station, from empty to full .
42 and 62 to increase by the same amount. Thus,
suppose that all of the'tanks are empty, and that
we begin to ?ll the tank at station I 2. As the
?oat at station l2 rises, the ?oat-operated con
tact 40 is thereby moved to'the right (as seen on
position, but that the tank at station l2 has, a
capacity vof 100 gallons; that at station‘ l4 has
the drawing) to increase the resistance 28 be
a capacity of 200 gallons; and that at station l6 10 tween the contacts 40-44, and the contact 42
has a capacity of 500 gallons. In this case, the
is moved. to the right by the same ?oat to de
resistance '28 between the contacts 40 and 44
crease
the resistance 30 between the contacts
when the tank at station I2 is full should be say
42-46 by the same amount. As the liquid con
about 100 ohms; the resistance 30 between the
tinues to rise the pointer 20 therefore correspond
contacts 42 and 46 should be about 100 ohms 15 ingly moves to the right unti1 the tank at station
when the same tank is empty; the resistance 32
"is full and the pointer indicates “100" gallons
between the contacts 48 and 52 should be about
on the scale 22. If we now begin to ?ll the tank
200 ohms when the tank at station I 4 is full; the
at station I 4, the ?oat-operated contacts 48 and
resistance 34 between the contacts 50 and 54
50 at that station both move to the right and
should be about 200 ohms when the same tank 20 when that tank is full, the pointer ,20 will indi- .
is empty; the resistance 35 between the con
cate “300” gallons, 1. e., the sum of 100 plus 200
tacts 56 and 60 should be about 500 ohmswhen
gallons, on the scale 22.- If we now begin to ?ll ,
the tank at station ' i6 is full; and the resistance
the tank at station 16, the ?oat-operated‘ con
38 between the contacts 58 and 62 should be about
tacts 58 and 58 at that station both move to the
_ 500 ohms when the last mentioned tank is empty. 25 right and when that tank is full, the pointer 20
Each manually adjustable end resistor 64, 66
will indicate “800" gallons, i._ e., 'the sum of
should preferably be about
‘
100+200+500 gallons, on the scale 22. It will
16.8
now be understood, of course, thatv regardless of
the relative positions of the ?oats at any time,
‘ 201
30
times the total resistance of the transmitting sta
tions; in the present case
'
as
i
201
times (500+200+100) which
the instrument l8—20—22-24-26 will accurate
ly indicate the correct total of gallons at that
time. Thus, if the tank at station I2 is one-quar
ter full, that at station I4 is one-half full, and ‘
that at station lB-is three-?fths full; the indi
35 cator will correctly indicate the total gallons, 1. e.,
“425" gallons, which is the sum of
I
is equal ‘to about
66.9 ohms.
After the above described individual adjust
ments at the transmitting stations have been ef
100 200 3x500
T+ 2‘+ _ 5
fected, the following additional over-all adjust 40 While my invention is particularly adapted to
totalize gallons, asabove described, it may be
ments are made, if necessary. All of the ?oats
are placed in their lowest, 1. e., empty, position.
The resistance 66 is now manually adjusted until
the pointer 20 reads zero, or “empty” on the
scale 22. All of the ?oats are then moved to
their uppermost, i. e., "full” position. The re
sistance 64 is now manually adjusted until the
pointer 20 reads 800, or “full” on the scale 22.
This process may be repeated to re-checkthe
"empty” and “full” positions.
With the system in operation, and after the
foregoing adjustments have been made, the
also employed to totalize other variables such as
distances, temperatures, etc., by utilizing suit
able apparatus for automatically operating the
contacts 40, 42, 48, 50, 56, 58 at the various
transmitting stations. Furthermore, while other
forms of indicating couples, such as recorders,
may be employed, I now prefer to use the indi
cating instrument'shown and described.
The transmitting stations may be located at
distances one from another, and .the indicating
instrument may be located remotely from one,_
or more, or all, of the transmitting'stations.
In accordance with the provisions of the pat- '
upon the scale 22 the total number of gallons
in the three tanks at the three transmitting sta- ' ent statutes, I have herein described the princis
ple of operation of my invention, together with
tions l2, l4, IS. The angular position of the rotor
or armature I 8, and its pointer 20, is at all times
the apparatus which I now consider to represent
determined by the relative strengths of the mag
the best embodiments thereof, but I desire to
netic ?elds set up by the coils or solenoids 24, 26, I vhave it understood that the apparatus disclosed
and the relative strengths of those magnetic ?elds .60 is only illustrative and that the invention can be
is determined by the relative strengths of the
carried out by other means. Also, while it is
voltages impressed across the two coils. The
designed to use the various features and ele
combination of controlling resistances 64-28
ments? in the combinations and relations de
32—36—-38—34-30-—66 and their electrical con
scribed, some of these may be altered and others ~
nections constitutes, in effect, a potentiometer in
omitted, without interfering with the more gen
which the total resistance from conductor 68 to
eral results outlined, and'the invention extends
conductor 10 is constant, regardless of the posi
to such use within the scope of the appended
tions of any of the ?oats and the contacts which
claims.
_
they operate, The ratio of the voltages across
What I claim is:
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I
,
the coils 24 and 26 varies and is dependent upon
1. A system of the class described comprising
the positions of the ?oats and the contacts which
in combination, a group of serially connected
they operate. When any ?oat moves to increase
variable resistances, a second group of serially
the resistance between the points 44 and 58, it
connected variable resistances, an indicating in
pointer 20' will at all times accurately indicate ,
simultaneously causes the resistance between the
‘points 42 and 62 to decrease by the same amount.
strument having a plurality of de?ecting coils,
one of said coils being connected across the ?rst
Q?l 1,719
mentioned group of resistances and another of‘
said coils being connected across the second men
tionedgroun of resistances. a transmitting in
strument including a variable resistance of the
?rst mentlnnedgroun and a similar variable re
sistance of the second mentioned group, said
transmitting instrument having means operable
in'accordance with the value of a variable for
simultaneously increasing the resistance of one
saidlast mentioned resistances and decreasing
the resistanceoi' the other of said last mentioned
resistance: by the same amount. ‘and a second
transmitting instrument including another vari- '
,
i
, and a contact member respectively associated with
each of said resistances and mechanically con
nected for simultaneous movement throughout a
predetermined range peculiar to said transmitters
respectively, electrical connections between said
transmitters and with said receiving instrument
to connect one of the resistances of each trans;
mitter in series in one group and the other re
sistance of each transmitter in series in another
group, electrical connections between oneend of
said one group and one end of said other group
and to said receiving instrument, electrical con
nections between the free ends of said groups re‘
spectively‘ and the receiving instrument, a source
of E. M. F. connected across said free ends 01
able resistance vof the ?rst mentioned group and
still another similar variable resistance of the
second mentioned group, said last mentioned
‘ said groups, the ‘aforesaid connections being so
?oat-operated.
' tively associated contact members so as to call
constructed and arranged that movements of said
transmitting instrument having means operable
contact members in any one of said transmitters
in accordance with‘ the value of another variable
will increase the resistance in the series con
for simultaneously increasing the resistance of 20 nection in/one of said groups and will decrease
one of said last mentioned resistances and de;
the resistance in the series connection in the
creasing the resistance of the other of said last
other of said groups by substantially the same
mentioned resistances'by the same amount.
amount, ,and means included in the connections
2. A combination as set forth in claim 1 and
aforesaid for manually adjustably varying the
in which the variables are quantities of liquids 25 -connectlon point to each of the transmitter re
and in which each transmitting instrument is
sistances other than that through said respec
3. A telemetering system, comprising a single
receiving instrument having a plurality of angu-,
larly spaced coils and an indicator, the indicat
brate each transmitter in accordance with the
maximum total of the variable quantity to be
ing positions of which are determined by a re
sultant field‘, of which the magnetic ?elds pro
duced by said coils are components, a plurality
5. A telemetering system for indicating on a
transmitted thereby.
.
. single indicating instrument the total oi.’ the liq
uid contents of a plurality of tanks, comprising
a single receiving and indicating instrument hav
ous values of variables having different maxi as ing a plurality of angularly spaced coils and an
mums and electrically connected to said receiv
indicator, the indicating positions of which are
ing instrument so that the latter indicates the
determined by a resultant ?eld, of which the
magnetic ?elds produced by said coils are com
sum of the indications of said transmitters, each
of said transmitters having two substantially
ponents, a plurality of transmitters respectively
similar resistances and a contact member re 4.0 associated with each of said tanks, ?oat means
spectively associated with each of said resist
in each of said tanks responsive to the level of
ances and mechanically connected for simultane
liquid therein, each of said transmitters having
ous movement throughout a predetermined .range , two substantially similar resistances and a con
tact member respectively associated with each
peculiar to each transmitter respectively,'e1ec
trical connections between said transmitters and 45 of said resistances, means responsive to said ?oat
means ‘for mechanically moving said contact
with said receiving instrument to connect one
members in respect to said resistances, electrical
of the resistances of each transmitter in series
connections between said transmitters and said
in one group and the other resistance of each
receiving instrument to connect one of the re- transmitter in series in another group, electrical
of transmitters for transmitting the instantane
connections between one end of said one group 50 sistances of each transmitter in series in one group
and the other resistance of each transmitter in
and one end of said other group'and to said re
‘series in another group, electrical connections
celving instrument, electrical connections be
between one end of said one group and one end
tween the free ends of said groups respectively
of said other group and to said receiving instru
and the receiving instrument, and a source of
E. M. F. connected across said free ends of said 55 ment, electrical connections between the free ,ends
of said groups respectively and said receiving in
groups, the aforesaid connections being so con
strument, and a source of E. M. F. connected
structed and arranged that movements vof said
across said free ends of said groups, the afore
contact members in any one of said transmitters
said connections being so constructed and ar
will increase the resistance in the series con
nection in one-of said groups and will decrease 60 ranged that movement of said contact members '
in any one of said’ transmitters will increase the
the resistance in the series connection in the
resistance in the series connection in one of said
other of said groups by substantially the same
amount.
_
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4. A telemetering system, comprising a, single
receiving instrument having a plurality of angu
larly spaced coils and an indicator, the indicating
positions of which are determined by a resultant
?eld, of which the magnetic ?elds produced by
said coils are components, a plurality of trans
mitters for transmitting the instantaneous values
of variables having different maximums and elec-,
trically connected to said receiving instrument so
that the latter indicates the sum of the indica
groups and will decreasethe resistance in the
series connection in the other of said groups.
6. A telemetering system fOr indicating on a
single indicating instrument the total of the liq-'
uid contents of a plurality of tanks, comprising
a single receiving and indicating instrument hav
ing a plurality of angularly spaced coils and an
indicator, the indicating positions of which are
determined by a resultant ?eld, of which the mag
netic ?elds produced by said coils are components,
a plurality of transmitters respectively associated
with each of said tanks, means in each tank re
tions of said transmitters, each of said transmit
ters having two substantially similar resistances 75 sponsive to the-liquid contents thereof for oper
2,411,712
ating said transmitters respectively, each of said
transmitters having two similar resistances and
a contact member associated with each of said
resistances and mechanically connected for si
8
Q group and one end of said other group and to
said receiving instrument, electrical connections
between the free ends of said groups respectively
and .said receiving instrument, and a source of
multaneous movement throughout a predeter
E. M. F. ‘connected across said free ends of said‘
mined range peculiar to each transmitter respec
groups, the aforesaid connections being so con
tively and determined by and in accordance with
structed and arranged that movement of said
the total contents of the respectively associated
contact members in one of said transmitters in
tank, electrical connections between said trans
response to variation of the contents of the asso
mitters and said receiving instrument to connect 10 ciated tank will increase the resistance in the
one of the resistances of each transmitter in se
series connection in one of said groups and will
ries in one group and the other resistance of
correspondingly decrease the resistance in the
each transmitter in series in another group, elec
series connection in the other of said groups.
trical connections between one end of said one
CLARENCE A. DE GIERS,
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