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Патент USA US3034581

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May 15, 1962
L. R. KINSEY
3,034,572
LIFEGUARD PILOT LIGHT FOR RANGE TOPS
Filed_ July 23, _1958
ii!
l0
//
in.
INVENTOR.
LEW/S R K/NSE)’
3,034,572
1
United States Patent 0 "ice
Patented May 1 5, ‘1962
2
1
portion 31, and the numeral 33 designates a bracket
which has portions 33' bent down over the thermocouple
211. In FIGURE 3 air enters through openings 32 and
3 034,572
LIFEGUARD PILOT ,LIGHT FOR RANGE TOPS
Lewis R. Kinsey, 108 S. 25th St., Phoenix, Ariz.
Filed July 23, 1958, Ser. No. 750,493
1 Claim. (Cl. 158-130)
passes up through the doughnut shaped thermocouple.
Thus, air enters the holder 26 through the openings 32,
This invention relates to gas burners, and more par
bent down and over the thermocouple 29 to hold the
and as previously stated, the bracket 33 has portions 33'
ticularly to a pilot assembly for gas burners.
The object of the present invention is to provide an
thermocouple in place.
assembly which is constructed so that the thermostatic
suitable manner. The bottom of the holder 11 is open
as at 12, and it is to be noted that the cap 17 has an
opening 19 in its side as well as an opening 18 in its
top, and this arrangement of openings serves to insure
that the ?ames will be directed sidewardly as well as up
From the foregoing, it is apparent that there has been
assembly which is designed or constructed primarily for 10 provided an assembly which will be highly e?icient in use,
and in FIGURES 1 and 2 the inner ends of the plurality
safety.
of ?ash tubes 10 are connected to the holder 11 in any
Another object of the invention is to provide a pilot
unit or automatic shut-off control unit can be mounted
below the level of the ?ash tubes and which will not be
affected by the heat from the ?ash tubes.
Another object of the invention is to provide an as
sembly which takes up very little space and wherein with
the present invention existing equipment of the automatic
wardly. Gas for the pilot 16 is supplied through the con
duit 22. The pilot 16 and thermocouple 23 are both
pilot light of gas heaters and hot water heaters can be
mounted in the support member 14, and the capillary
arranged or made to work on the top of a gas range.
line 24 is connected to the themocouple 23.
‘In FIGURES 3 and 4 instead of utilizing an upright
thermocouple, a doughnut shaped or circular thermocou~
A further object of the invention is to provide a pilot
light for range tops which is extremely simple and inex
ple 29 is used, and the thermocouple 29 has a capillary
pensive to manufacture.
Other objects and advantages will be apparent during 25 line 30 connected thereto. The ?ash tubes 25 are con
nected to the holder 26, and the thermocouple 29 is
the course of the following description.
mounted in the lower portion of the holder 26 and is re
In the accompanying drawings, forming a part of this
tained in place by means of the brackets 33. In both
application, and in which like numerals are used to
forms of the invention air enters through the bottom.
designate like parts throughout the same:
FIGURE 1 is an elevational view illustrating one form 30 Thus, in FIGURE 1 air can enter through an opening
such as the opening 35, whereas in FIGURE 3, air can
of the present invention, and with parts broken away
enter through the openings 32.
and in section;
The thermocouple 29 has the shape of a doughnut or
FIGURE 2 is a sectional view taken on the line 2~—2
open ring and the thermocouple 29 can be like a con
of FIGURE 1;
ventional thermocouple except that instead of being‘
FIGURE 3 is a view similar to FIGURE 1, but illus
straight, it is bent into the doughnut shape or open ring
trating a modi?cation; and
FIGURE 4 is a sectional view taken on the line 4—4
of FIGURE 3.
FIGURE 5 is a plan view illustrating the bracket be
fore the portions are bent.
Referring in detail to the drawings, and more par
ticularly to FIGURES 1 and 2 of the drawings, the nu
shape and this bending is preferably done before ?lling.
It is to be understood that the main master valve to
be used with the present invention may be of conven
meral 10 designates each of a plurality of ?ash tubes,
tional construction and is adapted to have a special bleed
o?' connection for the gas that goes to only the pilot
light. This valve also has a push button mounted there
on and must be operated when lighting the pilot light
and the inner ends of the tubes 10 are connected to a
so that this valve has to be mounted in a convenient lo
holder 11.
The lower portion of the holder 11 is cut 45 cation.
out as at 12.
The numeral 13 indicates a shield which
The best location is at the inside front of the
stove where the gas comes from the back and makes a
right angle bend going across the front of the stove so
has its upper end connected to the holder 11, and there,
as to form‘ the gas manifold. By placing the master
is further provided a support member 14 which is con
valve in this position or in this corner, the push button
nected to the lower portion of the shield 13 in any suit
able manner, as for example by means of securing ele 50 can extend through a hole in the sheet metal in front of
the stove and will be highly attractive and will be con
ments 15.
venient and handy at all times.
Extending through the support member 14 is a pilot
Heretofore, manufacturers, designers and engineers
member 16, and a cap 17 is connected to the upper end
have been unable to make the existing equipment of the
of the pilot member 16. The cap 17 is provided with
spaced apart openings 18 and 19 therein. Thus, the 55 automatic pilot light of gas heaters and hot water heaters
opening 18 is arranged in the top of the cap 17, while
the opening 19 is arranged in the side of the cap.
work on top of a gas range.
The numeral 20 indicates an elbow which is connected
to the lower end of the pilot member 16 in any suitable
manner, as for example by means of a set screw 21,
some sort of a thermostat which in turn controls a master
valve that supplies all gas to all burners so as to make
and a conduit 22 is connected to the elbow 20.
any. gas will even go to any of the burners.
This is where the heat from the pilot light controls
it necessary that the pilot light must be burning before
Thus, apparently there is so much heat coming down
the ?ash tubes from the burners and striking the heat
ing element, that it causes too great a heat range for
the present equipment to work satsifactorily or success
65 fully, but the present invention overcomes the di?iculty.
there is illustrated a modi?cation wherein the numeral
According to the present invention there is used a
25 designates ?ash tubes which have their inner ends con
standard vertical pilot light tube 16 in FIGURE 1 and
nected to a holder 26. The numeral 27 indicates a pilot
the thermocouple or bulb 23 is held in a vertical and ?xed
light which has a cap 28 on its upper end, and there is
further provided a doughnut shaped or annular thermo
position by means of the member 14. The entire unit
couple 29 which has a capillary line 30 connected thereto. 70 is surrounded by the slightly conical shield 13 which can
The holder 26 includes an annular side wall or side
be made of a suitable material such as sheet aluminum,
There is further provided a thermocouple 23 which
extends through the support member 14, and a capillary
line 24 is connected to the thermocouple 23.
Referring now to FIGURES 3 and 4 of the drawings,
3,034,572
3
4
and it is fully open at the bottom so as to permit plenty
)1? air to pass through for supporting combustion.
The pilot light and its thermocouple are mounted on
one or more holes or may be cut in various ways in
he inside of this cover or shield 13 and is below the
evel of the top thereof. On top of the shield 13 is mount
:d the holder 11 for the ?ash tubes 10 that go to the dif
Terent burners. The holder 11 has a large hole in the bot
tom thereof in order to permit the air and pilot ?ame to
pass therethrough. The top of the pilot light cap 17 is
ust below the holder 11, and the cap 17 on the pilot light 10
1as two holes 19 and 18 drilled into it so as to permit two
:eparate ?ames, but these two holes are connected by a
ine saw cut so that when a person lights, one, the other
order to heat the thermocouple 29 and to light the main
burner through the ?ash tubes 25 which are mounted
above.
While a standard vertical mounted thermocouple and
a doughnut shaped thermocouple have been illustrated and
described, it is to be understood that they can be of any
desired shape and they will still work sucessfully provid
ed the other factors are properly taken care of. A stand
ard but horizontally mounted thermocouple will take but
little space, but the added cost of its holding unit and
brackets with the ?ash tube holder mounted on top should
be considered.
The doughnut shaped thermocouple
mounts inside the ?ash tube holder itself and therefore
vill automatically light also. Furthermore, one of these
roles I9 is on the side and is to heat the thermocouple 23 15 it needs no outside braces, brackets or holders.
In certain instances, it may be necessary to better
)nly. The other one is directly on top as indicated by
insulate the top or near side of the oven especially when
he numeral 18 and goes up through the ?ash tube holder
this pilot light unit is mounted above the oven.
l1 and will light any or all of the main burners when
In FIGURE 1 the cap 17 provides a double ?ame, one
urned on. This method permits the thermostatic unit
)r automatic shut-off control unit to be mounted below 20 on the top and one on the side and the numeral 23 in~
dicates a thermocouple or bulb unit. The shield 13 sur
1e level of the ?ash tubes and is not a?fected by the heat
rounds the pilot light and the ?ash tube holder 11 is
herefrom. Furthermore, the two pilot ?ames both light
mounted on top of the shield, and the entire unit is sup
ind go out simultaneously. The cap 17 is adapted to be
ported by the pilot gas line and ?ash tubes. The capillary
Jressed on and many be secured in place by suitable pins
)1‘ securing elements which prevent it fro-m turning and 25 line 24 extends from the pilot light to the master valve,
and some systems use wire at this point for an electrical
which prevent the side ?ame from getting out of line with
contact between the pilot light and the master valve, but
he thermocouple unit.
the present invention is not limited to either.
In the modi?cation of FIGURES 3 and 4, this assembly
The elbow 20 and connection 22 are for supplying gas
:an use the same master valve as is used with FIGURES
to a pilot light, and the set screw 21 retains the elbow in
l and 2, but the assembly of FIGURES 3 and 4- is less
place and when loosened, permits the elbow to be swung
Ieep. In fact, it takes up very little more room than the
into any direction.
aresent non-automatic pilot light for ranges and is made
The surrounding shield 13 and ?ash tube holder 11
rery much the same and very closely resembles the pres
permit application of the assembly to a range top and this
:nt non-automatic pilot light except that in FIGURES
is believed to be novel.
l and 4 the device is made slightly larger in diameter and
1 little deeper.
The present non-automatic pilot for ranges uses two
:ylinders or cups, one being smaller and mounted on the
ns-ide of the other. The small one surrounds the pilot
In FIGURE 3 the ?ash tubes 25 are connected to the
holder 26, and there is provided the small gas line 27
for the pilot light.
The ‘doughnut shaped thermocouple or bulb complete
ight ?ame and protects it from winds and drafts. The 40 ly ‘surrounds the pilot light, and the shield for the thermo
couple goes completely around the thermocouple and
arger one supports the inside ends of the ?ash tubes.
holds it down and in place. The capillary line 34} serves
The sides or Walls of the small cup are not straight up
the same purpose as the previously described capillary
ind down but are conical and they taper in towards the
line 24. Air enters the ?ash tube holder 26 through holes
op which is much smaller than the bottom.
In FIGURES 3 and 4 there is concealed the small 4:5 in the bottom, up around the pilot light and up inside the
hole in the doughnut shaped thermocouple.
ioughnut shape thermocouple 29 which is almost as small
The method of fastening the ?ash tubes into the ?ash
15 a life saver candy mint and has approximately the same
:hape.
tube holder is no different than the non-automatic type
The diameter of the ?ash tube holder can easily be
that has been in use for many years. In the vertical model,
Found after the diameter of the thermocouple is ?xed. 50 the ?ash tube holder has a large section cut out of the
Furthermore, the diameter of the top of the ?ash tube
bottom as indicated by the numeral 12, in order to let the
iolder can be smaller than the bottom by making the
pilot ?ame pass through, and in the doughnut shaped
;ide walls a little higher and this will have the same e?‘ect
model, this holder is a little larger and a little deeper.
)f placing the thermocouple a little lower and farther
This is the difference between the standard model and the
away from the heat from the ?ash tubes.
present invention. As previously ‘stated, air for combus
For economy and simplicity in manufacturing the small
tion enters through the bottom in both models.
loughnut shaped thermocouple 29, the thermocouple can
In FIGURE 3 the thermocouple is heated the same as
)e made from a small tube or bulb with the outer end
in FIGURE 1, with a side ?ame. The bracket 33 is of
;ealed up and then the device can be bent into the round
one piece construction and can be made of sheet metal
)r doughnut ring shape. The ?lling of the thermocouple 60 as shown in FIGURE 5 and this piece of metal is merely
:an be accomplished after the bending and one end of the
bent into a round shape and placed inside the bottom of
:apillary lead line 30 can be fastened to one end of the
the ?ash tube holder but around the outside of the dough
:hermocouple ring 29.
nut shaped thermocouple.
The portions 33' are then
Some automatic pilot controls use a different ?lling
bent down over the doughnut shaped thermocouple and
ngredient for the thermostatic bulb unit. Thus, some 65 the bottom portions 33" of the bracket 33 extend down
ise a small capillary copper line running from the thermo
through slots or openings in the bottom plate 5 and are
stat at the pilot light to the master shut-off valve, and
bent so as to form a solid and economically constructed
;ome use wire making an electrical connection between
unit.
he pilot light and the waster valve. The present inven
;ion is not limited to any one method because they will 70
all work provided they have the proper heat range and
:he bulb or thermocouple is placed below and/or pro
As stated previously the present invention provides an
arrangement which is extremely safe.
If a main burner is turned on when the pilot light is
burning, the main. will light and if a main burner is turned
on, when the pilot light is not burning, no gas will come
Furthermore, when using the doughnut shape thermo
zouple or bulb 29, the cap 28 for the pilot light may have 75 out, and if the pilot light goes out, from any cause, all
tected from the heat of the ?ash tubes.
3,034,572
P
0
6
gas to all burners is automatically shut off by the master
valve.
spaced apart openings communicating therewith, said
openings being arranged at the top and side portions
The bracket 33 can be made of a piece of sheet metal
thereof so as to permit two separate ?ames that both
which is bent into a round shape which is then placed
around and on the outside of the doughnut shaped ther
mocouple. The top portions 33’ are then bent down over
light and go out simultaneously, an annular doughnut
shaped thermocouple surrounding a portion of said pilot
member, the top opening being directed towards the inner
end portions of ?ash tubes, the side opening being di
rected towards the thermocouple, said thermocouple be
ing arranged below the level of the ?ash tubes, and said
the thermocouple and the bottom portions 33” extend
down through slots or openings in the bottom side and
are then bent over as shown in FIGURE 3 so as to form
a complete assembly.
Minor changes in shape, size and rearrangement of
10
details coming within the ?eld of invention claimed may
be resorted to in actual practice, if desired.
I claim:
A device of the character described for gas stoves or 15
ranges adapted to have top burners, comprising a plurality
of ?ash tubes, a holder operatively connected to and com
municating with the inner end portions of said ?ash
tubes, said holder including an annular side wall and a
horizontally disposed bottom wall, there being a plurality 20
of inlet openings in the bottom wall of said holder, a
pilot member mounted within said holder, said pilot
member being provided with an inlet passage and with
thermocouple being arranged adjacent the lower portion
of the holder, a capillary line connected to said thermo
couple, and a bracket having portions thereof engaging
said thermocouple for holding the thermocouple in place
in the lower portion of the holder.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,688,487
1,878,552
2,310,026
2,443,892
2,645,280
Dester _______________ __ Oct. 23,
Tinnerman __________ __ Sept. 20,
Highley ______________ __ Feb. 2,
Caparone ____________ __ June 22,
Witzel _______________ __ July 14,
1928
1932
1943
1948
1953
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