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NOV- 12, 1946.
H. .1. FINDLEY
'
2,410,72
THERHOELECTRIC GENERATOR
Filed April 22, 1943
3 Sheets-Sheet 2
‘INVENTOR.
-
Han/AZ ?ne/.5)’
NOV.’ 12, 1946.
_H. J. FINDLEY
THERMOELECTRIC GENERATOR
Filed April 22, 1943
2,410,872
3 Sheets-Sheet 3
H IMQ H I‘_.' lI.’
INVENTOR.
Han/A90 .77 F/MOL E Y
8% M47 5, 1M2
. Patented Nov. 12, 194%
2,410,8{72
THERMOELECTRIC GENERATOR
Howard J. Findley, Shaker Heights, Ohio, as- -
signor to Eaton Manufacturing Company,
Cleveland, Ohio, a corporation of Ohio
I
Application April 22, 1943, Serial No. 484,085
(Cl. 136-4)
5 Claims.
1
through the fuel tank at a point to show the
This invention relates to thermoelectric gen=
erators and more particularly to an improved,
compact and simpli?ed construction for a device
fuel supply line to the burner;
-
Fig. '7 is a detached view, on an enlarged scale
and with portions in section, showing fuel de
Another object of this invention is to provide
?ecting means associated with‘ the burner;
Fig. 8 is a similar view taken at right angles to
an improved thermoelectric generator which is of
Fig. '7;
a manually portable nature and can be used for)
Fig. 9 is a detached view, with portions in sec
battery charging and various other purposes.
tion, further illustrating an igniting device asso
A further object of my invention is‘to provide
an improved thermoelectric generator having a 10 ciated with the burner;
Fig. 10 is a partial vertical sectional view, on '
housing and base of novel construction and con
taining a compactly arranged liquid fuel burning , an enlarged scale, showing means for connecting
means and thermopile, and wherein the housing
the housing member with the base;
Fig. 11 is another partial vertical'sectional view
member is movable to open and closed positions.
Still another object of my invention is to pro 15 showing locking means for the lid member, and
Fig. 12 is a diagram showing a. load circuit con
vide a self-contained manually portable thermo
electric generator having liquid fuel burning ' nected with the thermoelectric generator.
Proceeding with a more detailed description of
means in the base thereof for heating an upright
the present embodiment of my invention, I show
thermopi-le, and in which a housing member pro
tects the fuel burning means and thermopile while 20 my improved thermoelectric generator as having
a hollow base it ‘upon which the device may rest
in its closed position and when ‘in its open posi
or stand and a thermopiie it supported by the
tion forms, a stack or ?ue.
'
base and extending thereabove so as to receive
The invention may be"further brie?y sum
heat from a fuel burning means or burner as?
marized as consisting in certain novel combina
tions and arrangements of parts hereinafter de 25 sembly i2 contained in the base. A tubular_hous-.
ing member 53 surrounds the thermopile ii and
scribed and particularly set out in the appended‘
is movable axially thereof from a closed position
claims.
as shown in Fig. 1, to an open position as shown
The thermoelectric generator herein‘ disclosed
in Fig. 2. ‘
,
is also disclosed in my copending application
The lower end of the housing member it has
Serial No. 491,908, ?led June 23, 1943, in'which a 3
an enlarged portion or ?ared skirt lBa thereon
method of generating current thermoelectrically
which, in the closed position of the housing mem- ,
is claimed. The present application is also re
ber, forms an upper section of the hollow base
lated to my copending application Serial No.
ill. The lower section of the base is formed by a
491,909, ?led June 23, 1943, and disclosing a
thermoelectric generator having collapsible inner 35 ring-shaped fuel tank it adapted to contain gaso
line or other liquid fuel. The hollow base also
and outer stack members.
includes a tapered section or hood member 15
‘In the accompanying sheets of drawings:' ,
having its larger end supported on and fastened
Fig. 1 is an elevational view, with portions
to the tank it and having a transverse wall i6
broken away, showing a thermoelectric generator
40 at its upper end which supports the upright ther
embodying my invention; _
mopile II. This hood member has a plurality
Fig. 1a is a fragmentary sectional view on a
' of this kind.“
larger scale and showing the parting line between
of openings‘ ill in its side wall which admit air
the movable housing member and the fuel tank
to the burner assembly for combustion purposes
and through which various fuel control members
of the base.
_
'
are accessible
Fig. 2 is another elevational view with portions
members in open position;
_
Fig. 3 is a. transverse sectional view‘taken on
the line 3-3 of Fig. 2;
Fig. 4 is a detached longitudinal sectional view
of ‘the burner assembly;
or accommodated
as will be
further explained hereinafter. In addition to
, forming a support for the thermopile i I, this hood
member houses and protects the burner assembly
and the fuel control members.
50
The thermopile It may be of any suitable con
struction and may be of the type comprising an
elongated combustion chamber is defined by a
thereof broken away and with the lid and housing
-
Fig. 5 is a fragmentary longitudinal sectional
view of the burner showing the same on a larger
‘ tube or sleeve
l9. formed of refractory and
electrically insulating material, and a plurality
Fig. 6 is a partial vertical sectional view taken 55 of thermocouple groups it carried by such re- ‘
scale;
'
2,410,872
3
.
4
Eli of the burner body which is located just in
fractory sleeve. Each of the groups 2@ may com
wardly of the orifice 35. The delivery of fuel to
prise a number of series-connected individual
the burner assembly from the tank i4 is obtained
thermocouples of any suitable construction and
by maintaining a pressure in the fuel tank. For
disposed with their hot junctions 2i in the com
bustion chamber i8 and their cold junctions 22 5 this purpose air may be forced into the fuel tank
by means of the manually operable pump 5i
outside of the combustion chamber and in. the
which projects through another of the openings
annular spaceor passage 23 etxending between
i‘! of the hood member 85. If desired the fuel
the sleeve i9 and the housing member iii. The
tank may be provided with a gauge housing 52
thermocouples extend through the wall of the re
fractory sleeve i9’ and may be suitably mounted‘ 10 containing a suitable pressure gauge for indi
cating the pressure in the {fuel tank and a suit
in appropriate openings thereof.» The thermoable fuel gauge for indicating the amount of fuel
couple groups 213 may be connected with each
in the tank. The gauge housing 52 is located on
other in series, parallel or series~parallel relation.
the tank ill at a point to be readily visible through
The thermopile ii may be connected with the
base ill by being clampingly held between a spi- i5 one oi.’ the opennigs H of the hood member.
The priming cup 32 which surrounds the burn
cler 2d and the transverse wall it of the hood
er body 29 is adapted to contain a quantity of
member 95. Screws or tie rods 2-5 extend through
liquid fuel which can be ignited and burned for
the spider and the transverse wall it of the hood
the purpose of preliminarily heating the burner
member for this purpose. The lower end of the
refractory sleeve i9 may be seated in a recessed 2%) body and the vaporizer Si. The fuel for prim
ing the burner is obtained from the tank it by
portion its of the transverse wall so as to sur
opening the fuel control valve so as to permit
round an opening i511 thereof through which the
liquid fuel to be discharged through the ori?ce
upper end of the burner assembly 52 extends.
35. To prevent such liquid. fuel from being
The burner assembly i2 comprises a burner
tube 28, whose upper end communicates with the 25 squirted into the combustion chamber id, I pro
vide a de?ector 53 which is movable to a position
combustion chamber it, and a burner body 2t ad
over the ori?ce and de?ects the stream so that _
jacent the lower end of the burner tube. The
the fuel runs ‘down and collects in the cup $2.
burner body carries a nozzle 36 which is in sub—
The de?ector 53 is best shown in Figs; 7 and 3
stantially coaxial relation with the burner tube
and refractory sleeve is. The burner assembly 30 and is carried by a shaft 55 having an actuating
knob 55 disposed outside of the hood member IS.
also includes a vaporizer 3! having a vaporizing
A compression spring '56 disposed around the shaft
chamber surrounding the burner tube, and a
54 normally holds the de?ector 53 in a retracted
priming cup 32 surrounding the burner body 29.
position removed from the burner nozzle, as
The lower end of the burner assembly extends
more or less into the ring opening‘ 33 of the fuel 35 shown in dotted lines in Fig. 7. Just before open
ing the fuel ‘valve by rotation of the knob 6 l, the
tank Ml and may be supported in the hollow base
knob 55 is pulled out to its full line position
by means of one or more arms 34! connecting the
thereby moving the de?ector 53 to a position in
same with the hood member Iii.
front of the nozzle ori?ce. After the desired
As mst shown in Figs. 4 and 5 the burner noz
zle 30 has a delivery opening or ori?ce 35 at its 40 amount of fuel has been collected in the prim
ing cup 32 the fuel valve is closed and the knob
upper end which is controlled by a rotatable and
55 is released.
-_
'
axially movable burner pin 38 having a threaded
The fuel in the priming cup is then ignited as
connection with the burner body at the point 37.
by means of a match, or preferably, by means of
The outer end of the pin hasa tip 38 of reduced
size for cleaning the ori?ce and a tapered por- 45 an igniting device 51 having a ?int 58 disposed
adjacent the cup 32 and an actuating member 58
tion or valve element 39 which cooperates with
located. outside of the hood member l-5. The
the ori?ce in forming a fuel control valve. Ro
shaft 60 of the igniting device carries a knurled
tation is imparted to the burner pin 36 by means
sparking wheel 6| which cooperates with the ?int
of an actuating stem or spindle 4i} carryinga
knob H at its outer end and having its inner 50 58, the latter being held against the wheel by
pressure supplied by the spring-actuated arm 82.
end connected with the pin through the bevel
As above indicated my improved thermoelectric
gears 42 and t3.
'
The gear 42 may be pinned or otherwise con
generator is of aportable nature and is adapted
to be manually carried from one-point of use to
connected with the burner Pin 36 by means of a 55 another. For this purpose I provide suitable car
rying means which in this instance is in the form
pluraltiy of radially disposed pins 44. The pins
of a bail-type handle 64 pivotally connected with
Ml are carried by a washer 45 and their inner
the housing member I3 adjacent its upper end.
ends extend through the gear 43 and engage 'in
When the housing member I3 is in itsclosed po
axial slots or keyways woof the burner pin 36.
This‘connection between the gear 63 and the 60 sition, as shown in Fig. 1. its enlarged lower end
I3a surrounds the fuel burning means and. the
burner pin 36 permits the latter to move axially
fuel control members and seats against the fuel .
in the burner body and in the gear 43 while the
tank H to form a smooth continuation of the
latter remains continuously in mesh with the
hollow base l0 and a relatively tight closure
gear 4?. The spindle Ml extends through, and
is journaled in an extension 56 of the burner body 65 which will prevent rain, dust and other foreign‘
matter from reaching the fuel burning means
29. The extension 4% extends upwardly and out- *
and thermopile. To enable the device to be car
wardly over the fuel tank [4 and projects through
ried by the handle‘ 64, the housing'member l3
one of the openings I‘! of‘ the hood‘ member IS.
The lower end of the burner body 29 is closed by .Q can be connected with the base I0‘ and for ‘this
inner and outer screw plugs 26 and 21 which 70 purpose I provide the housing member with a plu
are, removable to a?'ord access to the burner pin ' rality of fasteners 65 which are rotatably mount
ed on the enlargement l3a at spaced points there
36 from the ring opening 33 of the fuel tank.
around and are adapted for locking cooperation
Fuel is supplied from the tank It through the
pipe 48 to the chamber of the vaporizer 3! and ' with brackets 66 projecting from the hood mem
nected to the spindle 4!! and the gear 43 may be
then through the pipe 49 to a recess or chamber 75 her l5 at correspondingly located points.
gamers
5.
When the thermoelectric generator is to be
placed in operation the fastening members 65
various purposes and, in Fig. '12, I show the ther
- mopile H connected with an external load cir
cuit 16 containing a storage battery ‘ii to be
are unlocked and the housing member is is lifted
charged. A reverse-current cutout or relay 18
to its open position as shown in Fig. 2. The hous
may be provided in the circuit for preventing the
ing member is retained in this open position by
battery from discharging through the thermoplle
means of pivoted stops or pawls 67 which are
when the device is not operating as a generator.
carried by channel members 68 depending from
The reverse-current cutout comprises the usual
the spider 26 and are adapted to swing or drop
shunt and series coils ‘Hand 80 and a pair of
to a load-carrying position as shown in Fig. 2.
When the housing member is to be lowered to its 10 contacts 8| and 82 in the load circuit. When
the thermoelectric generator is placed inopera
closed position the pawls 57 are swung inwardly
to lie in the recesses or grooves of the channel
tion, as above explained, the current produced by . .
members 68 and in which position they do not
interfere with the downward movement of the
the thermopile ?rst energizes the shunt coil “it
which causes closing of the contacts ti and 82.
15 As soon as these contacts are closed, charging
- housing member i3.
current is supplied to the battery ‘ii and in pass
The upper end of the housing member is is
ing through the series coil 80 acts to maintain
closed by a lid member 69 which is adapted to be
the contacts 8i and 82 closed. When the oper
lifted to an elevated position as shown in Fig. 2.
ation; of the generator is to be discontinued, the
The lid member 69 is carried by annularly spaced
channel-shaped rods or posts 'i which are fric 20 fuel control valve is closed whereupon the charg
ing current ceases and as soon as current from
tionally slidable in channel-shaped guides ‘H
the battery 'i'l ?ows in a reverse direction through
which are attached to the inside of the housing
the series coil 80, the contacts 8i and 82 are
member it at correspondingly‘ spaced points.
automatically opened to break the circuit and
~\When the lid member $9 is in its closed position
it may be locked to the housing member 83 by 25 prevent the battery from becoming discharged.
From the foregoing description and accom
means of the laterally movable latch 12.
panying drawings, it will now be readily under
When the housing member 53 has been moved
stood that I have provided an improved, simpli
to its open position, as just described above, it
lied and compact thermoelectric generator which
uncovers the fuel control members so that they
are accessible for observation and manipulation. 30 can be manually carried from one point of use
to another. It will be seen also that in my im
An important function of the housing member
proved generator the burner assembly’ and fuel
while in its elevated position is that it forms a
control members are, all housed in the hollow
stack or flue for the combustion gases which
pass upwardly through the combustion chamber
base and while the device is being transported
i8. Since these gases emerge from the upper 35 the housing member covers and protects the
thermoplle and forms a tight closure with the
‘ end oflthe combustion chamber with consider
base. It will be seen furthermore that when the
able velocity and are in a heated condition, an
elector action will be produced within the stack
thermoelectric generator is to be placed in op
and will cause cool air to be drawn into the lower
end of the housing member_- This cool air en
eration the housingmember can be quickly and >
tering the housing member will flow across the
thermocouples 2t? and will maintain the outer
junctions 2'2 relatively cool.
-
easily opened to expose the fuel control members
and, while in its open position, forms a stack for
the combustion gases and for inducing a flow of
.
cool air over the thermocouples.
While I have illustrated and described my im
45 proved thermoelectric g‘rnenerator in considerable
detail, it will be understood of course that I do not
From Figs. 1 and 3 it will be noted that the
spider 243 at the upper end of the thermopile has
a plurality of openings 73 which permit the es‘
wish to be correspondingly limited but regard my
cape of the heated gases from the combustion
- invention as including all changes and modi?ca
chamber is and has another group of openings
tions coming within the scope of the appended
“which permit the cooling air to pass upwardly
in the housing member 13 after ?owing over the 50 claims.
Having thus described my invention, I claim:
thermocouples 26. If desired, a spreader 75 may
1. An upright thermoelectric generator com
is( mounted on the spider 2% so as to extend
downwardly into the combustion chamber I8 for
prising, abase upon which the device is adapted
Reverting to the starting operation, it will be
understood that whenthe housing member is
and lid member 69 have been moved to their
tubular portion surrounding said thermoplle and
to stand, an upright thermoplle supported by said
a suitable distance. This member serves to spread
the ?ame and heated combustion gases so that 55 base and extending thereabove, fuel burning
means on said base and adapted to supply heat
they will come into more direct contact with the
to said thermoplle, a housing member having a
hot junctions 2i of the thermocouples.
an enlarged lower portion whioh'engages said
base when said housing member is in a closed po
sition, said housing member being llftable to an
open position in which said enlarged lower por
open position and a quantity of fuel has been
collected in the priming cup 32 and ignited, as
tion is spaced above said base to permit an inflow ‘
above explained, the burning fuel heats the burn
of cool air around the thermoplle and said tubular
er and vaporizer and this generates vapor pres
sure in the vaporizing chamber 3!. When the 65 portion forms a stack extending above the there
mopile, and means for supporting said housing
priming charge has been nearly consumed the
member in it's open position.
fuel control valve is reopened and the fuel vapor
2. An upright thermoelectric generator com
which issues from the nozzle 3t will be ignited‘
‘ prising, a base upon which the device is adapted
and a sustained flame or blast will thereafter
be directed into the combustion chamber it 70 to stand and containing a tank for liquid fuel, an
by the nozzle and the heating of the junctions
2! will result in an electric current ‘being gen
‘upright thermoplle supported by said base and
extending thereabove,,_liquid fuel burning means
on‘said base and adapted to receive fuel from said
tank and to supply heat to said thermoplle, a
ator can be used to generate electric current for 75 housing member having a tubular portion sur
erated in the thermopile;
.
I As before indicated my thermoelectric gener
aeiaeva
7
.
' d
rounding said thermopile and an enlarged lower
tubular portion surrounding said thermopile and
portion which engages‘ said base when said hous
ing member is in a closed position, said housing
member being liftaiole to an open position in which
an enlarged lower portion which engages said base
when‘ said housing member is in a closed position.
said enlarged lower portion is spaced above said
base to permit an inflow of ‘cool air around the
thermopile and said tubular portion forms a stack
extending above the thermopile, and means for .
said housing member being liftabie to an open po
sition in which said enlarged lower portion is
spaced above said base to permit an in?ow of cool
air around the thermopile and said tubular por
tion forms a stack extending above the thermo
pile, and means for supporting said housing mem
supporting said housing member in its open po
10 ber in its open goosition.
sitioh.
5. A manually portable upright thermoelectric
3. An upright thermoelectric generator com
generator comprising, a base upon which the de
prising, a base upon which the device is adapted
vice is adapted to stand and containing a ring
to stand and containing a tank for liquid fuel,
shaped tank for liquid fuel, a hollow hood mem
an upright hollow themiopile supported by said
base and extending thereabove, a burner on said 15 ber supported on said tank and extending there
above, an upright hollow thermopile supported
base and adapted to be supplied with liquid fuel
by said hood me'iiber and extending thereabove,
from said tank, said burner being disposed so as
fuel burning means located in said hood member
to direct burning fuel upwardly into the lower
and opening of said ring shaped tank and adapted ’
end of said hollow thermopile, a housing member
having a tubular portion surrounding said ther
to be supplied with liquid fuel from said tank,
said fuel burning means being disposed so as to
mogiils and an enlarged lower portion which en
direct burning fuel upwardly into the lower end
gages said base when said housing member is in
a closed position, said housing member being lift
of said hollow thermooile, a housing member hav
ing a tubular portion surrounding said thermopile
aiole to an open position in which said enlarged
and an enlarged lower portion which surrounds
lower portion is spaced above said base to pei'mit
said hood-member and engages said base when
an inflow of cool air around the thezmopile and
said housing member is in a closed position, said
said tubular portion f-cmis a steel: extending
housing member being liftable to an open posi“
above the thermopile, and means for supporting
tion in which said enlarged. lower portion is
said housing member in its open position.
4. Au upright thermoelectric generator com 39 spaced above said base to permit an in?ow of
prising, a base upon which the device is adapted
cool air around the thermopile and said tubular
portion forms a stack extending above the ther
to stand and containing a ring shaped tank for
mopile, means for connecting said housing mem
liqmd fuel, an upright hollow thei'mopile sup“
ported by said ‘base and extendingthereabove, a
ber: with said hood member when the housing
member is in its closed position, carrying means
burner on said base and adapted to be supplied
connected with said housing member, and means
I with liquid fuel from said tank, said burner being
for supporting’ said housing member in its open
located at least in part in the opening of said
position.
I
ring shaped tanl: and disposed so as to direct‘
.
HOWARD J. ETN‘DLEY.
burning fuel upwardly into the lower end ox" said
hollow thermopile, a housing member having a -
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