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Патент USA US2119385

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May 31, 1938;
Filed Jan. 18', 1934
3 Sheets-Sheet 1
May 31,: 1938.
Filled Jan. 18, 1954
. -
s Sheets-Sheet 2
v , - ~
I? I
May 31, 1938.
'r. 1.. FERRALL
2,1 19,385
Filed Jan. 18, 1934
3 Sheets-Sheet 3
j 6
2i 0E F W
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7'40!» as 4 ‘Fc rra/I
’ Patented May 31, 1938
Thomas L. Ferrall, ‘Detroit, Mich., assignor to
Roberts Brass Manufacturing Company, De
troit, Mich" a corporation of Michigan
Application January 18, 1934, Serial No. 707,183
4 Claims.
(01. 1523-1171)
‘The invention relates to lighters for gas stoves
and‘more particularly to constructions providing
is directed into the tube J producing a combusti
bile mixture therein which extends to the pilot,
thereby e?ecting propagation of thepilot ?ame
to the burner.
for the lighting of a plurality of different burners.
or groups of burners requiring separate pilot
5 lights. It is*the object of the invention to auto
matically shut off the supply of gas to all of the
burners when the ?ame of one pilot has been ex
For lighting the oven burner I have provided >
a lighter mechanismcomprising a pilot jet K
mounted upon a vertical mixing tube L having a
laterally extending perforated tube L' which ex- '
such pilot- before the burners can be operated. It. tends into the oven and into lighting proximity
is a further object to effect this control where any with the‘burner therein. The mixing tube L re
one of the several pilots has been extinguished -'ceives gas from a conduit M which is connected 10
and without the necessity of duplicating allof to the valve E for the oven burner, the arrange
the mechanisms for each pilot. With these ob
ment being such that whenever said valve is open
jects in view the invention consists‘in the con
to supply gas to the burner, gas will also pass
15 struction as hereinafter described.
through the tube M to the mixing tube 'L and
In the drawings:
'tinguished, thereby necessitating the relighting of
laterally extending perforated tube L’. The tube
Fig. 1 is a perspective view of my improved
L has a jet aperture L2 in the top thereof which
directs gas towards the pilot K and perforations
' lighter control means in connection with an oven
burner lighter and atop burner lighter;
of the tube L’, thereby causing the propagation
Fig. 2 is a plan view showing a construction
using three lighters;
of ?ame from the jet inward to the burner. The
‘elements Land K are preferably located between‘
Fig. 3‘is asection on line 3-3 of Fig. 2;
the outer wall and the lining of the oven, so as to
Fig. 4 is a section through‘the main gas control.
protect the pilot ?ame from drafts and as will be
later explained, to conduct away any escaping
gas into the chimney ?ue.
My automatic control mechanism comprises a
shut-off valve N. located in the main supply con
Fig. 5 is a section through the pilot control valve
showing a slightly modi?ed construction;
Fig.. 6 is a side elevation of one of the pilots;
Fig. 7 is a diagram illustrating another modi
duit A. This valve as shown in Fig. 4 has an aper
tured seat N’ and a cooperating valve disk N,
which latter is mounted on ,a stem N3 passing 30
outward through a packing gland N‘. A spring N5
bearing against the disk N2 serves to yieldably
As my lighter ‘control means is applicable to
various gas stoves without regard to the speci?c
construction of the same, it is unnecesary to il
lustrate such construction further than to show
some of the ‘burners ‘and the lighters therefor.
It Thus as shown in Fig. 1, A is the main gas supply
conduit for the gas stove, Bis one of the top burn
hold said disk to its seat. Aligned with the stem
N3 is an operatingrod 0 which passes over the
pilot light and is slidably supported in a bi-‘ 35
ers of the stove receiving its supply of gas from - furcated bracket 1’ extending upward from the
the conduit A and provided with the usual mixing bracket I. At the outer end of the rod 0 is an
7 tube C and controlling valve D. E is the valve operating knobO' which when pressed will actuate
‘a controlling the oven‘ burnersv (not shown) this the'stem N3 to force the valve disc N2 away from ‘
its seat. ‘Beneath the rod O-is a U-shaped bi,
metal thermostatic bar P, one end of which is
being also supplied with gas from the'conduit A.
The. burner B is one of a group, the others of
which are not shown and all of which are auto
mounted on a post P’ rising from a plate P2
matically lighted from a single pilot ?ame. The ' ' inounted on the tube G. The bend in this bar is
at lighter ‘construction comprises a jet tube F with ' above the pilot light from the jet tube F and 45
an air mixing tube G surrounding the same, and under normal conditions when the pilot is light- -
a frusto-conical shield H for protecting the pilot
‘ed, will be heated so that its free end is bent
upward adjacent to the rod 0. O2 is a collar on
the rod 0 adapted to engage the end of the bar
P to hold the valve ‘disc N2 in open position. Thus
?ame from drafts.‘ Theta parts are mounted on
a suitable supporting bracket'I on the frame of
the stove (not shown). Projecting laterally from
the shield H are the. ?ame conveying tubes J
as long .as the pilot is lighted the valve N2 when
which extend to each of the burners B and are so
once opened by operation of the'rod 0 will re
constructed as to receive gas therefrom. The ar
main open, thereby supplying gas to the. burners
rangemen't is such that when ever the valve D is I of the stove. As soon, however, as the pilot ?ame
so open to supply the burner B with gas, a jet of gas " is extinguished the bar P .will'cool and bend down 55
ward so as to disengage the collar 02 and permit
the spring N5 to‘close the valve.
The pilot for the oven burner is provided with
a similar control comprising a U-shaped bi-metal
thermostatic bar Q arranged above the ?ame
from the jet tube K. Instead, however, of using
this control for operating a valve in the main
supply conduit, it controls a valve R which sup
plies gas to the jet tube F. The arrangement is
such that the pilot ?ame from the jet tube K by
expanding the bar Q will hold the valve R in open
position where gas is supplied to the jet tube F
through a conduit R’, but if the flame- from the
jet K is extinguished, this will effect the closing
of the valve R which in turn will extinguish the
?ame from the jet tube F, bringing about the
closing of the valve N12 as previously described.
The supply of gas to the valve R may if de
- sired be taken from the portion A‘ of the pipe A
20 which is beyond the valve N and supplies the
burners. Such a connection is vindicated at S
(Fig. 5).- Inasmuch, however, as the pilot K is
preferably located between the lining and outer
‘ wall ‘of the oven, which space is connected with
the chimney ?ue, it is not so important to out 01f
the supply of ' gas thereto_., In other words, the
bring about a dangerous condition, either by way
of forming an explosive mixture in the room or a
poisoning of the atmosphere.
With the alternative gas supply connection for
the pilots indicated in Fig. 5, leakage of gas from
any pilot is prevented but to relight the jets it
would be necessary to hold the valve N2 open by
pressure on the knob 0' for a su?icient length
of time to successively heat up all of the thermo
stats. There is therefore an advantage in the 10
use of the construction of the connection shown
in Fig. 1, as with this there is always ‘a supply of
gas to the jet K which can be instantaneously
lighted and in case the other pilots vvhave been
extinguished they may be successively lighted
until the last of the series‘ is reached. The knob
0' may then be operated toopen the valve N"l '
and supply gas to the burners.
= For certain installations it is desirable to pro
vide a. plurality of pilots which are supplied with 20
gas at all times and whichv therefore can be
lighted without delay. Suchya construction is
diagrammatically illustrated in Fig: 7 in which
W and W’ are two pilots which are‘ constantly
supplied with gas from the main gas pipe A 25
through the branch pipes W’ andjwa. The pilot
.W controls the thermostatic valve W4 and the
idly carried away and up the chimney without pilot W’ controls the thermostatic valve‘ W5, both ,
permitting escape int'o'the room or the forming of which are in a gas supply line W6 for a third
small discharge of gas from such jet will be'rap
30 of an explosive mixture in the oven. Therefore
I preferably connect the valve R with the con
duit A on the supply side of the valve N, so that
pilot W". The latter- controls Zhe main valve N
which is opened by theoperati g rod 0.
With this construction the extinguishing of any
' at all times, gas will be furnished to the nozzle K. ‘ one of the pilots will bring about the closing of
As shown, this is accomplished by forming the the main valve-N inthe same way as in the con
valve N with a nipple N‘3 to which is connected a
‘ pipe It3 leading to the valve R, said nipple being
on the gas supply side of the valve N’.
For certain uses, as for instance hotel vgas
ranges, the number of top burners is more than
can be lighted from a single pilot. Thus,_ as
guishing of either of the pilots W or W’ will cut
off the gas supply to the pilot W". There is, how
ever, this difference from the constructions pre
viously described, that the pilots W and W’ are
constantly supplied with gas so that either one
these burners, there are two or more burners, B4
may be instantly lighted if it has been extin
guished. This, while rendering it possible to have
two extinguished pilots supplied with gas, never
theless has the advantage of greater ease in re
and B‘, which must be lighted from a separatev
lighting than with the constructions previously
pilot. For such a construction I remove the con
trol rod 0 from the pilot F and arrange it in con
nection with a pilot T for lighting the burners B4
and B5. The valve N is also transferred in posi
the pilots.
shown in Fig. 2, the burners B, B}, B2 and Ba‘are
all lighted from the pilot F through the ?ame
conducting tubes J, J’, J2 and J 3. In addition to
tion so as to be operated by therod O, as previ- ‘
ously described, but to be directly controlled by
the thermostat of the pilot T. The thermostat
of the pilot F controls a valve U which is similar
in construction to the valve R and which supplies
55 gas to the pilot T through. a conduit T’. With
this construction, if any one of the pilot lights is
extinguished, this will cause the closing of the
‘valve N2 which will shut oi! the supply of gas to
all of the burners. If‘ the extinguished pilot is
, from the jet K, ‘then gas will be cut 011 from the
pilots F and T, but the jet K will still be supplied
with gas so that it may be readily ignited. If
the pilot F is extinguished, this will cut off the
supply of gas to the pilot T, which will cause the
65 closing of the valve N‘, but gas will still be sup
plied to the jet of the extinguished pilot. In the
same manner, if'the pilot T is extinguished, this
4 will cause the closing of the valve N’, but will per;
structions previously described. Also, the extin
mit the pilots ‘K and F to continue burning and
will supply gas to the extinsuished pilot T. Thus
it will be noted that with this construction as well
as’ with the construction previously described,
there is only one extinguished pilot. which can
described, which require successive lighting of
What I claim as my invention is:
1. In combination, a burner, a pilot in light
ing proximity to said burner, a‘second burner, a
pilot in lighting proximity to said second burner,
a gas supply conduit for said burners, a spring
pressed valve controlling the flow of gas through
said conduit to said burners, a second spring
pressed valve, a conduit for conducting gas from
the supply side of said supply conduit to the sec
ond valve, branch conduits for conducting gas
from the second valve to the pilots, ‘the branch
conduit to the second pilot being upon the supply a:
side of the second valve, the branch conduit to
the ?rst pilot being upon the discharge side of
said second valve, a heat responsive element in
position ‘to be heated by the second mentioned
pilot when lighted, an automatic push rod mov
able by the heat responsive element when heated
by the second mentioned pilot foropening the
second mentioned valve, said second mentioned
valve being movable by its spring _to closed posi
tion to cut off the supply of gas to the ?rst men
tioned pilot when the second mentioned pilot is
extinguished, a manually operable push rod for
opening the ?rst mentioned valve. said rod ex
\ tending over the ?rst mentioned pilot and having
I be still supplied with gas. Thus the amount of gas
a collar, and a heat responsive ‘element in posi
75 which can be discharged is not sumvcient to
tionto be heated by the ?rst mentioned pilot and
sponsive‘ element in position to be heated ‘by the
movable into and out of the path of theooll'ar,
said last mentioned heat responsive element being second mentioned pilot when lightednmeans mov
operable after the manually operable» rod has able by the heat responsive element when heated
been pushed and the ?rst mentioned pilot has _ by the second mentioned pilot'for ‘opening the
' been lighted to move into the ‘path of and engage; second mentioned valve, saidsecond mentioned
the collar'so that the ?rst mentioned valve will. valve being movable to closed position to, cut oil?
be held ‘in open position,‘ and being operable
the supply' of gas to the ?rst mentioned pilot
when the second mentioned pilot is extinguished,
a manually operable push rod for opening the
?rst mentioned valve, said rod having a projec
tion, and a heat responsive element in position to
‘ when the ?rst mentionedpilot is extinguished to
move out of_-engagement with the collar so that
?rst, mentioned valve may be moved by its
:10 ' the‘
spring to closed‘ position.
‘2. ,The combination with a plurality of burners,
_,a gas supply conduit therefor, a pilot for lighting
be heated by the ?rst mentioned 'pilot'and mov
able into and out of the path of the projection,
, certain of said burners, a.valve controlling‘ the - said last mentioned heat responsive element be
?ow of gas through the conduit to said burners, ing operable after the manually operable rod has 15
' a spring tending to close saidvalve, a manually j ‘been- pushed and the ?rst mentioned pilot has:
operable push rod for opening said valve, said' rod been lighted to move into the path‘of and engage "
extending over the pilot and having a collar, a - the projection so that the ?rst mentioned ‘valve
heat responsive element in position to be heated
will be held in' open position, and being operable
20 by the pilot and movable into and out of the path when the ?rst mentioned pilot is extinguished
of the-collar, said heat'responsive- element‘ being > to move out of engagement with the projection
operable after the rodyhas been pushed‘and the ‘ so that the ?rst mentioned valve may be moved
pilot has been lighted to move into the path of,
and'engage the collar so that the valve will be‘
25 held in open position and being operable whenthe
pilot is extinguished to move out 'of engagement .5
, to closed position.
. 4. The combination with a plurality of burn
ers, a gas supply conduit ‘therefor, a pilot for 25
lighting certain of saidburners, a valve con
' with the collar so that the valve, may be moved
trolling the How of gas through the conduit‘to.
by the spring to closed position, two more pilots said burners, a manually operable rod for open- _
for lighting other oijsaid burners; means on, the ing said valve, said rod having a projection, a
responsive-element in' position to be heated 30
30 supply'side of the valve for conducting gasito" heat
said last mentioned two pilots, a conduitiior con‘- 1, [by-the pilot and'movable into and out oil the i
‘ducting gas ,from one of- saidllastmentionedtwo‘ ;: path of the projection, said heat responsive ele-'
pilots to the’?rst mentioned=pilot,1;thermostatic : ment being operabieafter the rod has been actu
valve means in said last mentioned‘ 'con'duitre “ated and the pilot has been lighted to move into‘
.‘the path of and engage the projection so that
to v the
.' other.
of thermostatic
one ‘of ,saidiila'st
, valve
jmean's , " the valve will be held in open position and being
within said last mentioned conduit responsivelt
operable when the pilot is extinguished to move '
the heat of thelother of-said ‘last; mentioned two out of engagement with the projection so that
pilots, the arrangement beingfsuch" that the *sup_-; the valve may be moved to closed. position, two
40 ply of gas to the ?rst mentioned’ pilot will-becut more pilots for lighting other of said burners,‘
off when either of the last mentioned two pilots is - ' means on the supply side 01' thevalve for con
extinguished, thus causing, the f?rst mentioned
ducting gas to said last mentioned two pilots, a
pilot to be extinguished so. that the ‘spring ,for
the ?rst mentioned valve ‘will-‘close. the sameand
mentioned two pilots to the ?rst mentioned pilot,
.45 cut off the supply of gas to the burners.
3. In ‘combination, a bu'r‘nen'a pilot‘ in light-,‘
conduit for conducting gas from one at said last Y ‘Y
vthermostatic valve means in said last mentioned 45
conduit responsive to the heat of one of said last .
mentioned two pilots, and other thermostatic
valve means within said‘ last mentioned conduit
~a gas supply conduit‘forlsaid burners, a‘ valve - responsive to the heat of the other of said last
‘ ing proximity to said burnenfa second‘ burner, a
pilot in lightingproximity to said second burner,
controlling the ?ow or gas through saidlconduit - mentioned two pilots, the arrangement :being
to said burners, a “second valve, a conduit forv such that the supply 01 gas to‘ the ?rst men
conducting gas‘irom the‘ supply side oisaid sup
tioned pilot will be‘cut o? when either or the
' ply conduit to the second valve; branch‘conduits ' last mentioned two pilots is'extinguished, thus
for conducting ‘gas from the second" valve to the
causing the ?rst mentioned pilot tojbe éxtine
pilots, the branch conduit to‘ the seconaipuotpe» guished so that the ?rst mentioned valve will
ing upon the supplysideof thelsecondvvalve,‘;the, ,;
branchconduit to the ?rst pilot bein'g‘?'upon the "
discharge side of said second valvé,-a
heat‘t re-' 7
and cut on the supply 01’ gas to the burners.
*rn'oikas L. FERRAIL._
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