Viscoscometer. Page: 9 of 10
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1,187,000
latter condition alternating current is desir-
able over direct current, as there is little or
no arcing of alternating currents at the con-
tacts, while the necessary amount of direct
5 current to maintain the desired temperature
results in arcing at the contacts.
In Fig. 12 I have shown another arrange-
ment of circuits where only alternating cur-
rent is available, and in which the therino-
10 stat controlled circuit for operating the
switch to throw the alternating current onto
the heaters may be furnished from storage
or dry batteries. In this arrangement the
connections from the alternating source are
15 shown at 60, 001. leading to posts 61, 01, a
wire 62 connecting the post 011 with a resist-
ance switch 63, and the motor 30, while the
post 61 is connected to the other side of the
motor by a wire 62, so that the motor may
20 be run at low speed whenever the switch 63
is on. The thermostat controlled switch 12
is in a. circuit including wires 64, 64, con-
nected respectively to binding posts G5, 65,
connected to suitable storage or dry batteries
2e (not shown), said circuit also including the
magnet 19a for operating the armature 21
and bar 23. connected onto the wire 02 at
62h is one end of the coil of the heater 6, the
opposite end of which is connected at 66, to
30 a wire 67, connected to one side of the motor
30 and to the armature 23a. The bar 23
makes and breaks contact at the contacts 29,
24L, the former being connected to a wire 68
leading to the binding post 61a.
35 Ulnder normal conditions the motor is run
at low speed by alternating current on the
circuit 62, 621, and the circuit for the heater
is open at the contacts 291, 24. When the
circuit for the magnet 19 is closed at the
f 0 contacts 13, 14, upon a drop in temperature,
the armature 23 is operated by the magnet
19 to close the heater circuit at the contacts
291. 2,a so that alternating current heats the
heaters over the circuit. including part of
45 the wire 02, part of the wire 66, the arma-
tire 211. bar 23a. contacts 291, 24a. and wire
68. At the same time additional current is
placed on the motor 30 by way of the wires
02, 6T, and armature 21a, bar 23, contacts
50 29a. 21i, and wire 68. The system may in-
elude an alarm circuit including a bell 69,
connected to the wire 64 by a wire 70 and to
the contact 41 by the wire 7', the bar 12,
serving to close a. circuit through the bell,
55 over the wire 64, said bar 12, contact 41,
wires 71, 70. and 64a whenever the heating
fluid is excessively heated.
While I have shown several different sys-
tems for controlling the motor and heating
G0 means. I desire it understood that I do not
desire to be limited thereto as other systems
may be employed without departing from
the spirit and scope of my invention.
While I have shown only two forms ofvariations may be made therein without de-
parting from the principle of the invention,
and it is further obvious that a device of
substantially the same construction may be
used for different purposes than that set out 70
in the foregoing specification whenever it
may be desired to maintain a constant tem-
perature and I hereby reserve the right to
make mechanical changes in the construc-
tion thereof and adapt the device to various 75
uses for which it may be employe(l, so long
as I do not depart from the principle there-
of. as set forth in the appended claims.
What I claim and desire to secure by Let-
ters Patent of the U nited States is:- so
1. In a viscoscometer, in combination, a
horizontally disposed chamber adapted to
contain a fluid, a plurality of separate re-
ceptacles in the chamber and (lscharging
from the bottom of the chtambler. heating s5
means in the chamber arranged to be in
direct contact with the fluid therein, elec-
trically operated means for circulating the
fluid in contact with said coils and the re-
ceptacles, aid thermostalticaily controlled 90
means for energizing said heating means
and electrically operated means.
2. In a viscoscometer. in combination, a
chamber, a plurality of receptacles in the
chamber, each receptacle having an opening. 95
an electric heater in the chamber for heating
said medium, an electric motor driven means
for causing circulation of a heating medium
in the chamber, and means controlled by the
temperature of said medium for energizing 100
said heater and motor for the circulating
means.
3. In a viscoscometer, in combination a
chamber, a plurality of receptacles in the
chamber, each receptacle having an opening, 105
an electric heater in the chamber for heat-
ing said medium, an electric motor driven
means for causing circulation of a heating
medium in the chamube r,11(1 means con-
trolled by the temperature. of Said medium 110
for simultaneously energizing said heater
and motor for the circulating means.
4. In a viscoscolmeter. in combination, a
chamber, a plurality of receptacles in the
chamber. means for lieating a ne(lium in the 115
chamber. motor driven means for causing
circulation of the medium in the chamber,
electrical means for rendering said heating
means and motor for the last-namned means
effective, circuits for said electrical means, 120
.nd thermnostatically operated means for en-
ergizin s1ai( circuits.
In a viscoscometer. in combination, a.
chamber adapted to contain a liquid, a plu-
rality of liquid receiving, receptacles in the 125
chamber, electric means for heating a. liquid
circulatory medium in said chamber, an
impeller wheel for causing circulation of
said medium. a motor for driving said in-teller wheel, and thermostat tically-controlled 1 0
45 this device, it is apparent that mechanical
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Lorenz, Charles O. Viscoscometer., patent, June 13, 1916; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth859855/m1/9/?rotate=90: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.