Temperature-Regulator Page: 4 of 5
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1,313,938
that the latter will be effectively influenced
by the mean temperature of the two fluids.
In the form shown in Fig. 1 a tube 19 con-
taining mercury or like thermostatic ele-
5 meant communicates with the mercury chain-
ber of the thermostat 14. Said tube 19 ex-
tends through the tube 20 and has its closed
end disposed in the tube 10. Thus, the tube
19 will be subjected separately to the fluids
xo flowing toward the discharge, 23. It will
be-readily understood that by regulating the
heating or cooling medium supplied to the
jacket 11 the temperature of the fluid pass-
ing through the tube 10 may be caused to
1 determine the final temperature of the min-
gled fuel issuing from the discharge 23 and.
the extent to which the thermostatic ele-
ment in the tube 19 may function to affect
the'valve 13 will depend upon the percent-
20' age of the area of said tube 19 exposed to
the action of the fluids in the respective
tubes 10- and 20.- Therefore, the installa-
tion may be such as to produce a predeter-
mined temperature of the fluid issuing from
25 the discharge 23, that is to say, the device
may be so installed" with respect.to the pro-
portion of the tube 19 in the tubes 10 and
20 that the issuing fluid will have for ex-
ample a temperature of 1750 with a given
30 area of said tube 19 in the- cooler tube 20,.
and by decreasing the area of the tube 19
in the tube 20 the temperature of the fluid
issuing from the discharge 23 may be re-
duced. The tube 10 may be considered a
35 'primary tube and the tube 20 a secondary
tube because the former carries the princi-
pal or more constant vohume of fluid at a
more. or less constant temperature which we
will take as being 1750. The fluid flows
40 'through tube- 20 in greatly varying quanti-
ties and- when so flowing the.temperature at
the discharge' 23 is required to be reduced,
say to 150o. When the tube 20 is passing
its full capacity the temperature at the dis-
45 "charge 23 will vary between 1500 and 1750
according to the volume of fluid flowing
from the tube 20' into 'the chamber 26 and
discharge 23, the operation being as fol-
lows: The main fluid, is passing through the
50 tube 10 to the discharge and heat. for exam-
ple is being supplied to the jacket 11 through
the inlet 12 'and 'valve 13, and: the heat is
under control of the thermostat 14 to admit
more or less of the heating medium into' the
55 pipe 12 and jacket 11. .-Assuming normally
in operation the parts 10 to 14 and that the
discharge has a temperature of 1750, we will
now start a flow -of fluid through the tube,
20 to the chamber 26 and discharge' 23; thus
60 fluid flowingi past that portion of the tube
19 exposed in the tube 20, will either con-
tract or expand the mercury or other ther-
mostatic element in said tube 19 according
to the temperature -of the flow through' the
65 tube 20 and the' effect of the expansion or'contraction of the thermostatic element in
tube 19 will be in proportion to the exposed
area of said tube, and it is evident that if
we are passing a fluid through the tube 20
that is colder .than that flowing past that 70
portion of the tube 19 exposed in the tube
10, we will cause a contraction of the fluid
in the tube 19' where it passes through the
tube 20 and thus the contraction of the ther-
mostatic fluid will permit the diaphragm 15 75
to depress and open to a greater extent the
valve 14 which will admit more of the heat-
ing medium through the inlet 12 and jacket
11, thus increasing the temperature of -the
fluid passing through tube 10, and that the 80
combined discharge of the tubes 10 and 20
will then have a temperature which is due to
the temperature effect of the fluids flowing
through the tubes 10 and 20. It is also evi-
dent that if the tube 19 containing the ther- 85
mostatic element has a less percentage of its
total area exposed to the effect of tempera-
ture changes in tube 20 than is exposed to
temperature, changes in tube 10, that the ef-
fect on the expansible fluid of the tube 19 90
exposed in the tube 20 will not be sufficient
to cause enough contraction in that portion
of the tube 19 exposed in the tube 20 to coun-
teract and balance the expansion of the
thermostatic fluid in the tube 19 exposed to 95
temperature changes in tube 10. This re-
sults in an unbalanced effect upon the ther-
mostatic -diaphragm 15 which, upon the
whole, will be depressed on account of the
contraction' of the expansible fluid in tube 100
19 and will move the valve 13 to a more open
position to thus increase the temperature of
the jacket 11 which :in turn raises the tem-
perature of the fluid 'flowing through tube.
10 to such an extent: that they compensate to, 105
a degree the entrance or flow of the colder'
fluid delivered by the tube 20 and this com-
pensation is' more or less in proportion to
the percentage of the tube 19 exposed in the
respective tubes 10 and 20 as explained 110
above. Thus, the temperature of the dis-
charge of the mingled fluids will approxi-
mately be in- proportion to the percentage
that the tube 19 exposed in tube 20 bears to
the exposure of said tube 19 in the- tube 10, 115
when the device is operating under 'normal
conditions and within the limits for which
it is designed.
In the form shown in Fig. 2, the elements
described are the same.as in Fig. 1 except 120
as to, tube 190- corresponding with- tube 19.
Said tube 19a extends at: opposite sides of
the branch 19b connecting it. with the mer-
cury chamber of the thermostat 14 and
terminates in -two legs or branches depend- 125
ing in the respective tubes 10a and 20a corre-
sponding essentially with the-tubes 10 and
20 and having essentially the same relation
to the discharge 23 and the- mixing-chamber
261 The two closed ends 190, 19d in the form 1304,30
AV."
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Reference the current page of this Patent.
Brooks, Howard. Temperature-Regulator, patent, August 26, 1919; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1258637/m1/4/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.