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NÓV- 27, 1962
w. H. HoLzBooG ETAL
' 3,065,913
REGULATORS FOR GAS BURNERS
Filed 0013. 26. 1960
5 Sheets-Sheet l
Nov. 27, 1962
3,065,913
W. H.- HOLZBOOG ETAL
REGULATORS FOR GAS BURNERS
Filed Oct. 26, 1960
Flr
3 Sheets-Sheet 2
FIG-Z
NOV- 27, 1962
w. H. HoLzBooG ETAL
, 3,065,913
REGULATORS FOR GAS BURNERS
Filed OCT.. 26, 1960
3 Sheets-Sheet 3
United States Patent Óiiiice:
1
3,065,913
Patented Nov. 27, 1962
2
Although the invention described herein has general
3,065,913
REGULATÜRS FOR GAS BURNERS
Walter H. Holzboog, Clayton, and Hamid C. Reinhart,
Ferguson, Mo., assignors to Micro Controls, Inc., Sit.
Louis, Mo., a corporation of Ghio
Filed Oct. 26, 196i), Ser. No. 65,691
7 Claims. (Cl. 236_68)
use, a particular use is for thermostatic gas valves for
oven temperature control, in relation to which the inven
tion will be described as an example.
Referring now more particularly to the drawings, FIGS.
l-9 illustrate what will hereinafter be referred to as the
main regulator R, its complete assembly being shown
‘in FIG. 1. FIGS. 10-12 illustrate a safety and control
This invention relates to regulators for gas burners,
valve construction. This valve construction is herein
and with regard to certain more specific features, to tem 10 after lettered S. In FIG. 13 is shown a burner B being
perature-regulating means for oven-s of cooking ranges
served by the apparatus. In this figure P is a constantly
burning pilot, serving to ignite the burner B and to
and the like. y
Among the several objects of the invention may be
ignite an intermittent pilot burner I. Device L is a liquid
noted compact regulator control apparatus for gas burners
filled temperature-responsive bulb thermostatically serv
which in an improved manner maximizes the range of 15 ing the regulator R and located in the space to be heated
more gradually regulated temperatures; the provision of
by the burner B, as for example the oven of a cooking
apparatus of the class described which accomplishes the
range. Device V is another liquid-filled temperature
regulation with adequate safety land with minimum tern
responsive bul-b thermostatically serving safety and con
perature swings; and the provision of apparatus of the
trol valve S. The intermittent pilot burner I is in effec
class described incorporating regulating and safety fea
tive heat-exchange relationship with the bulb V, but pilot
tures which minimize the effect upon their operations of
burner P is not. Thus the pilot burner P serves only
for ignition of burner B and the intermittent pilot I. De
»ambient temperature conditions, Other objects and fea
tures will be in part apparent and in part pointed out
vice M indicates the main gas line serving the apparatus.
This is connected with the constantly burning pilot P by
hereinafter.
The invention accordingly comprises the elements and 25 a line W. The intermittent pilot I is connected with the
regulator R through a gas line X. The bulb L is con
combinations of elements, features of construction, and
nected with the regulator R through a liquid line Y. The
arrangement of parts which will be exemplified in the
bulb V is connected with the safety valve S through liquid
structures hereinafter described, and the scope of which
line Z.
'
will be indicated in the following claims.
In the accompanying drawings, in which one of various 30
Numeral 1 (FIG. l) indicates a hollow casing formed
of parts 3 and 5, held together by screws 7. At numeral
possible embodiments of the invention is illustrated,
FIG. 1 is an axial section of a regulator constituting
part of the invention, the section being taken on lines
1_1 of FIGS. 2 and 9;
35
FIG. 2 is a left-end view of FIG. 1;
FIG. 3 is a detail section taken on line 3_3 of FIG. 2;
FIG. 4 is a left-end view oi a detached body member
of the regulator shown in FIG. l, showing the positions
9 is shown a gas inlet which communicates With a conical
v-alve seat 11 in part 3.
An inlet ñtting 2 (FIG. 13)
connects inlet 9 with the gas main M. The small end
13 of the conical seat 11 communicates with a main
passage 15, which in turn communicates through a
threaded outlet 17 with a compartment 19, the latter hav
ing a main gas outlet 21 in the part 5. The outlet 21 is
connected by pipe 4 with the safety valve construction S
of certain gas passages;
FIG. 5 is a jogged vertical section taken on line 5_5 40 (FIG. 13). The main passage 15 is also in by~pass con
of FIG. 4;
FIG. 6 is a horizontal section taken on line 6_6 of
FIG. 4;
FIG. 7 is a cross section taken online 7_7 of FIG. 4;
FIG. 8 is a detailed cross section taken on line 8_8
of FIG. l;
FIG. 9 is a right-end view of FIG. l, drawn on a re
duced scale;
FIG. 10 is a plan view of a safety valve construction
forming part of the invention;
FIG. ll is a vertical section taken on line 11_11 of
FIG. 10;
FIG. l2 is a left-end view of FIG. l1;
FIG. 13 is a diagrammatic view showing how various
nection with compartment 19 through passages 23, which
are under control of an adjustable threaded control
valve 25.
At numeral 37 is shown an outlet valve seat having a
tubular threaded part or bushing 39 in the 4opening 17.
This is grooved as shown at 40. Part 39 contains a
spider 41 for seating a spring 43. The spider 4l con
tains openings 42. It also carries a hollow forwardly
extending tubular part ¿i4 which, through passage 4S in
the spider 41, is in communication with groove 40. At
the end of tube part 44 is asecond valve seat 46 which
is machined in the plane of seat 37. Extending opposite
ly from spider ¿il is a cylindrical extension 43 carrying a
pin 50 which forms an attachment for a slotted sleeve
91. The slots are shown at 92.
safety regulator system for a gas burner;
A double-walled cup 47 is located in the compartment
FIG. 14 is a cross section taken on line 14_14 ~of
19. It has an inside wall 49 and an outside wall 51, the
FIG. l; and
latter being soldered or otherwise attached to the end
FIG. 15 is a cross section taken on line 15_15 of 60 of a nipple and post 53, held by means of a nut 55 in an
FIG. l.
opening in member 5. The marginal portions 57 of the
Corresponding reference characters indicate corre
cup members 49 and 51 are sealed together as by Welding
parts of the invention are connected to form a complete
sponding parts throughout the several views of the draw
ings.
Fw.
or soldering, the remaining portions of the members 49
and 5I being unjoined. They are corrugated in their
3,065,913
3
4
portions forming the inside bottom 10 of cup 47. The
stem 97 by means of an extension of the conjugate iiats
103 is a washer 109. Washer 109 and the hollow valve
stem 97 are adapted to rotate together.
The left end of the control stern S9 also has a flat 111
where it extends from the hollow valve stem 97, for the
splined reception of a washer 113 having a cooperating
conjugate ñat. Thus the washer and control stem 89
are adapted to rotate together.
At numeral 115 is shown a sheet-metal dial, located
outside member 51 is attached to a nipple 53 and is pro
vided with an opening 59, communicating through the
nipple with line Y. Line Y is sealed to the nipple 53
and extends to the bulb L, located in the Space to be
heated.
The bulb L, line Y and available space between the
bimetallic members 49 and 51 are lilled with a thermally
vresponsive liquid which is adapted upon expansion in rc
sponse to heating to enter betwen the members 49 and IO at the end of the hollow valve stem 97 and having a
>51, so as to force them apart. This drives the bottom
central hollow interiorly clearing the control stem 89
member 49 to the left away from bottom 51. The inner
without any splined relation therewith. The dial 115 is
bottom 49 carries an attached guide member 65 which
provided with opposite notches 117, accommodating the
has a sliding engagement with a member 67 in which is
shanks of screws 119, threaded into the washer 109. The
socketed a stem 69 of a movable valve 71. lValve 71 has
heads 121 of the screws overhang the washer 113 and are
an outer portion 6 engageable with seat 37 and an inner
adapted to clamp it when the screws are tightened in
portion 8 engageable with seat 46.
A spring rosette 73 is attached centrally to sleeve 65.
Its central portion and member 65 slide on part 67.
Spring lingers 14 of the Spring rosette 73 contact and
press marginally against a plate 75, riveted to the end
of the member 67. Thus in response to increased oven
temperatures applied to bulb L, the fluid presses to the
left the following parts: inside cup bottom 49, parts 65,
73, 75, 69 and valve 71. This tends to seat the parts 6
and 8 of valve 71 on seats 37 and 46, respectively.
Spring 43 provides reaction between the spider 4:1 and
the valve 71, biasing it toward open positions. Under
washer 109. Thus by loosening the screws 119, relative
rotation may be errected between the control stem 89
and the hollow valve stem 97. This is accomplished by
applying a screw driver to the slot 127 of the control
stern 89. During relative rotation, the washer 113 rotates
with control stem 39 while the washer 109 rotates with
the valve stem 97, holding with it the dial 115. The dial
is indexed as shown at 123, to show angles of adjustment
between control and valve stems 89 and 97, respectively,
which accord to 20° F. calibration steps (see designations
20° carried on dial 115).
The control stem 89 is prevented from moving axially
conditions in which the valve 71 may have closed and
-oy collar-forming horseshoe spring washers or snap rings
further expansion of fluid occurs, member 65 will slide 30 125 and 126, snapped into appropriate grooves in the
on member 67. As a result, the rosette spring 73 will
control stem 89. The right-hand one of these (126) be
deflect without damage to any parts. Upon cooling, the
comes located with some clearance adjacent the bottom of
reverse action occurs as the valve 71 moves toward
the hollow center 79 in the plug valve 77. The left-hand
its open positions.
one of these (125) with some clearance is located adjacent
Referring to FIGS. 3 and 4, groove 40, through auX
washer v113. The sum of the thicknesses of the washer
iliary passages 33 and 35, is in communication with an
1113 and dial 115 with some clearance iníills the space be
auxiliary outlet 61. Gas line X leads from outlet 61 to the
tween the washer 125 and the end of the valve stem 97.
intermittent pilot I (FIG. 3). Flow through passage 35
The control stem 89, because of said clearances, freely
is under control of an adjusting valve 63. A jogging
iloats a slight amount with respect to the valve 77, both
auxiliary passage 12 leads from auxiliary passage 33 40 when the screws 119 are loose for adjustment and when
into the right side (as seen in FIGS. 4 and 8) of the
they are tightened after adjustment. Note in this regard
that control stem 09 never has any more than a splined
conical valve seat 11 (FIGS. 1 and 3_8).
At numeral 77 is shown a manually controlled cup
connection with the washer 113, regardless of whether
shaped conical plug valve located in the conical seat 11
or not that washer is or is not clamped to members 109
(FIGS. l and 8). This valve has a hollow center 79
and 115 by the screws 119. A small pointer 129, having
communicating with main passage 15. The hollow cen
a central collar 131, is press-fitted onto the end of the
ter 79 is partially surrounded by a groove S1 which
control stem 89 to indicate in connection with the indexing
communicates with the center 79 through opposite pas
123 the angular adjustment between control stem 89 and
sages 83 and also through an intermediate passage S5.
the valve 77. Numerals 133 indicate lubricant-retention
This leaves a solid portion 87 of the valve 77 for con- .
trolling inlet 9 and auxiliary passage 12. The valve may
be turned counterclockwise from its initial position shown
in FIGS. -2 and 8. Initial rotation of valve 77 will open
passage 9 before auxiliary passage 12 closes. This al~
grooves in the control stem 89.
At numeral 135 is shown a sheet-metal platform mem
ber, supported on the end of the member 3 by screws 141.
Ovcrlying this platform member 135 is a sheet~metal jacket
139, also held in place by screws 141. Parts 135, 139
lows passages 12, 33 and 35 to receive gas for delivery '
form a cage for the arbor 105 and the extensions of con
via line X to the pilot burner I and adjustment of valve
trol and valve stems 89 and 97, respectively. When
assembled, the ñange 107 of the arbor 105 lies between
the platform member 135 and the body 3.
The body portion of the arbor extends through an open
63 may be then accomplished for a proper ilame at I.
More extensive counterclockwise rotation ñrst closes the
entrance to passage 12 and then reopens it.
Extending through the conical plug valve 77 is a con 60 ing 143 in the platform member 135, which opening is
trol stem 89, in the right end of which is a pin 94 riding
somewhat larger than the diameter of the arbor. This
in the slots 92. Thus if the control stem 89 is turned, so
admits an extension sleeve 167 of a control knob K,
is the threaded bushing 39 turned and axial positions of
illustrated in FIG. 13. Adjacent the right-hand end of
the valve seats 37 and 46 may thus be changed relative to
the arbor 105 is a latch plate 145. This plate has a bent
the range of thermostatic movement of the valve 71.
out ear 161 which, with the remainder of the plate, forms
a rocking edge 163. This edge is adapted for rocking
The left-hand end of the conical valve 77 is provided
the plate on the flanged end 107 of the arbor 105.
with a hollow stem 97. A counterbored seat 99 is ar
ranged in valve 77 for the reception of the end of a spring
Spring 101, reacting from valve 77, presses on latch
101. The control stem 09 extends through the hollow
plate 145, normally forcing it flat against the llange 107
valve stem 97 and out beyond its left-hand end. The TO and driving another ear 155 thereon into a notch 157
in the plate 135. The latch plate 145 is loosely keyed
hollow valve stem 97 and an arbor 105 are splined by
means of conjugate flats 103. The arbor 105 is flanged
tothe arbor 105 by ears shown at 106 in FIG. 14. These
as shown at 107. Thus the hollow valve stem 97 and
ears lit loosely in notches 112 in flange 107, so that the
the arbor 105 are adapted to rotate together but to have
plate 145 may rock as required, while being rotatable
relative sliding movements. lSplined on the hollow valve
with the arbor 105. When the arbor 105 is pushed in by
3,065,913
6
means of the extension 167 from handle K, the bent
portion 161 of plate 145 engages the adjacent end of body
portion 3, thereby rocking the plate 145 and taking the
ear 155 out of notch 157, thus releasing the rotary system
including valve 77 for rotation in the manner above de
scribed in connection with FIG. 8. Ears 108, located on
plate 145, are engageable with an ear 110 struck out from
platform 135 and provide opposite limits to rotation of
the valve 77 and parts attached thereto.
The position of parts shown in FIG. 1, wherein the
ear 155 is in the notch 157, corresponds to the closed
171 presses down the lever 173. This gradually Opens
valve 181.
The other route for gas to ñow from the valve 77 is to
the passage 15. From here, most of it passes through the
hollow threaded bushing 39 into compartment 19, provided
valve 71 is open, which it will be if bulb L in a cold condi
tion is calling for heat. A small amount of the gas from
main passage 15 passes to compartment 19 through by
passages 23, so that under no circumstances, while valve
77 is open, will burner B be entirely deprived of gas,
assuming valve 181 to be open, as is now the case. Since
position of valve 77 (FIG. 8). When out of the notch,
burner B now is receiving gas, it ignites from the constantly
burning pilot P. It may be remarked at this point that it
stem 89, which through the coupling afforded by pin 94
the flames of both pilots I and P should accidentally go out,
in slots 92, threads the valve seats 37 and 46 backward,
valve 181 would reclose, which constitutes a safety feature,
i.e., to the left in FIG. 1, and conversely, upon clockwise
since this would cut off a large outpouring of gas from
rotation threads these seats to the right.- Counterclockwise
the burner B. The small amount that would leak from
rotation adjusts for temperature increase lin the space
the pilots I and P would not be excessive.
served by burner B and clockwise rotation for temperature
Gas also flows from main passage 15 to compartment 19
20 under thermostatically regulating control of valve 71,
decrease.
The safety valve construction S of FIGS. 10-12 will now
operating with respect to seat 37. This regulated ilow
be described. This consists of a gas-tight casing 137 with
reaches burner B through open valve 181. If L is cool,
which gas pipe 4 is connected. This casing has an inlet
the part 6 of valve 71 retracts from seat 37, thus supply
nipple construction 147, connecting line Z with a double
ing more gas; and as L heats, the part 6 of valve 71 ap
walled cup 149. This has an outside cup part 151 and an 25 proaches seat 37, thus restricting flow of gas. Hence
inside cup part 153 marginally connected a-t 159, the space
regulation is obtained at the comparatively high-tempera
in bulb V,l pipe Zand that between the'cup bottoms 152
ture range withoutcompletely shutting off burner B or
and 154 of cups 151 and 153 being in-ñlled with an expan
shutting oiî pilot I.
sible ñuid. T'he movable inner bottom 154 carries a ball
The central portion 8 of valve 71 also approaches and
support 165 for a ball 169 engaging an adjustable set screw
recedes from seat 46, thus variably throttling flow of gas
171 in an operating control arm 173, pivoted at 175 to a
from the center of bushing 39 through the hollow part 44,
ñxed bracket 177. When bulb V is heated by pilot I, the
passage 45, groove 40, passage 33, 35, outlet 61, pipe X
fluid in system V, Z, 149 presses down the bottom 154
to pilot I. Under the high-temperature control conditions
which results in downward movement of the arm 173.
envisaged passage 12 is open. Therefore, this sta-ted íiow
from hollow stem 44 makes little or no difference in the
When the bulb V is cooled, as when thepilot I is out, the
counterclockwise rotation of the valve 77 also rotates the
fluid shrinks and arm 173 moves upward under action of a
return spring 179. This spring acts on a valve 181 with
which the end of lever 173 has a forked connection 183.
Numeral 185 indicates a valve seatl for valve 181.l This
seat is at the bottom of an adjustable outlet nozzle con
struction composed of `a slotted.. outlet. cone 187, pressed
into a threaded nipple 188, at theferid .of `which is'threaded
an adjustable outlet spud member 189. »The entir'efsafety
valve system S is located so that thespud. member is
located at the primary airinlet 191 of the >burner B.
Operation
is
as
follows:
\
»
.
’-
y
, .
_
size of the flame at I, as determined by the adjustment at
valve 63.
In view of the above, it is apparent that variations in the
regulated temperatures in a comparatively high-tempera
ture range are accomplished by turning the handle K,
higher temperatures being called for by counterclockwise
movements, which back off the seat 37 to admit more gas
to the burner B for a given range of movement ofthe valve
71. Reduced temperatures in the high~temperature range
- are obtained by clockwise movements of the handle K.
If K is turned sufliciently to reach a certain compara
tively lower temperature range, a condition occurs in which
Consider ñrst -the'preparations required at the time of
the member 87 (FIG. 8) covers port 12. This happens
initial installation. The pilot P is lighted and thereafter
burns constantly unless accidentally extinguished. In or 50 before the inlet port 9 is covered and has a double effect.
First, it cuts oil the flow of gas which is received by pilot
der initially to adjust the flame with which pilot I is to
I from port 12. Pilot I then relies for its gas upon that ~
burn, either constantly or intermittently, the knob K is
only slightly to rotate valve 77 anticlockwise (FIGS. 2
which flows to it via the hollow member 44 of bushing 39,
passage 45, groove 40, passages 33, 35, outlet 61 and pipe
(FIG. 8). The purpose of this is to provide a temporarily
In turning valve 77 to the right (FIG. 8) the bushing
pushed in to release the latching ear 155 and then turned
X, which gas route is under control of the action of the
and 8). This small amount of rotation is such as to 55
center port 8 of the valve 71 in respect to the seat 46
admit gas from 9 Without initiallyshutting oil` port 12
around the end of hollow member 44.
continuous flow of gas to pilotI, so that the proper size
39 is advanced to the right, thus causing valve 71 in the
of its flame vmay be adjusted from valve 63 (FIG. 3),
low-temperature range of settings to effect a complete
The system is thus prepared for controlled heating opera 60
tion in both comparatively vhigh- and low-temperature
ranges.
shut-olf of gas in response to overheat. This shut-oft" oc
curs in respect to the supply for pilot I and the casing S.
In other words, complete shut-olf occurs in response to
Next operation in use will be considered. Valve 77 is
overheating beyond the selected temperature in the low
turned counterclockwise to call for heat in, for example, 65 temperature range. As a result, when pilot I becomes ex
a comparatively high-temperature range. This would be .
tinguished the liquid in the system V, Z, 149 shrinks, thus
done, as, for example, by turning valve 77 one-half turn
through 169, 1‘71 and 173 closing valve 181. Hence
counterclockwise from the FIG. 8 position. This results
burner B cannot receive gas. Upon cooling of the space
in part 87 of valve 77 ñrst closing and then reopening in
being heated, the bulb L cools which shrinks the liquid in
port 12. Port 9 remains open. Gas will then ñow along 70 the system L, Y and between cup bottoms 49 and 51
two routes.
The first route may be considered as being '- -
through passages 12, 33, 35, outlet 61, pipe X to pilot I,
which lights from pilot P. Pilot I under these condi-tions
burns constantly. This heats bulb V and, by expansion of
lluid in the system V, Z, 149, through ball 169 and screw
(FIG. 1). This reopens the valve 71, which again sup
plies gas across seat 37 to casing S and across seat 46 to
pilot I. Pilot I relights from constantly burning pilot P,
which again starts the cycle of opening of valve 181 and
ignition of burner B.
3,065,913>
8
Thus it will be apparent that under high-temperature
by-pass connection communicating between the main pas
control settings of the valve 77, the valve lßl is con
sage and said main outlet.
never goes out, even though the valve 71 may closely ap
main burner, a thermostatic control means adapted in
response to heat from said second pilot burner to open
said first valve and to shut said valve when the second
3. A gas regulator system comprising a ñrst constantly
stantly open by reason of the constantly burning condi
burning pilot burner, a. main burner and a second pilot
tion from ñame pilot l. The entire control is then of the
modulating type caused by movements of the valve 71 to Ul burner both of which Iare adapted to be ignited from the
first pilot burner, a first valve controlling gas fiow to the
and from bushing 39. Under these conditions, burner B
proach seat 37, noting that the by-pass gas through pas
sages 23 prevents burner B from ever being extinguished
by reason of gas starvation.
On the other hand, under low-temperature control set
tings of the valve (passage 12 closed), the burner alter
pilot burner is extinguished, a valve housing having an
inlet, a main passage in the housing, a main outlet con
nected with said first valve, a first auxiliary passage `and a
nately lights and is extinguished through the action of
second auxiliary passage in the housing and an auxilary
valve ’71 seating and unseating on the seats 37 and 46.
outlet connected to said second pilot burner, a manual
15 valve controlling flow of gas from the inlet to the main
Upon seating, casing S is deprived of gas and so is the
pilot l, which latter event results also in the closing of
valve lSl. Upon cooling, the valve 7l retracts from the
seats 37 and 45, thus supplying casing S with gas and
supplying the pilot I with gas which is ignited from con
stantly burning pilot P. The heated system V, Z, 1429 then
gradually reopens valve 181 to supply burner B with gas
which ignites from the constantly burning pilot P.
Summarizing, the system described provides first for
modulation of the burner B in the high-temperature range
by varying its fiarne without its being extinguished. Sec
ond, it provides for modulation of the burner B in the
low-temperature range by intermittently igniting and ex
tinguishing it by reason of the intermittent ignition and
extinguishment of the intermittent pilot I and the com
plete opening and closing of valves 7l and 181. Third,
the system provides the safety closing feature of the valve
îSl under both high- and low-temperature operation, i.e.,
under any conditions in which both intermittent pilot I
and pilot P are extinguished. Fourth, the comparatively
slow opening and closing action of the control and safety
passage and also controlling flow of gas from the inlet
through said first auxiliary passage to the auxiliary out
let, said manual valve adapted in a first range of opening
positions thereof to cut off fiow from the inlet through
20 said first auxiliary passage to the auxiliary outlet while
communicating the inlet with the main passage, and in a
second range also to communicate the inlet through said
first auxiliary passage with the auxiliary outlet, ther
mostatic valve means controlling gas flow from the main
25 passage to the main outlet and from the main passage to
said auxiliary outlet through said second auxiliary pas
sage, drive means connecting the manual valve and said
thermostatic valve means adapted to adjust the latter, said
.thermostatic valve means when said manual valve is set
30 in said second range being adapted to vary gas íiow by
movement without entirely closing and when said manual
valve is set in said first range to vary gas flow by move
ment with complete closing.
4. A system according to claim 3, including a by
pass connection communicating between the main pas
sage and said main outlet.
valve §81 modulates the on-off gas fiow for smoother con
5. A system according to claim 3, wherein said ther
trol, and the slow opening action particularly prevents an
mostatic control means is of the slow-acting variety
undesirable explosive or puff type of ignition at burner
adapted gradually to open said first valve controlling
B under low-temperature control conditions.
fiow
to the main burner to prevent explosive ignition at
40
In view of the above, it will be seen that the several ob
the latter.
jects of the invention are achieved and other advanta
6. A gas regulator system comprising a first constantly
geous results attained.
burning
pilot burner, a main burner and a second pilot
As various changes could be made in the above con
burner both of which are adapted to be ignited by the first
struction without departing from the scope of the inven
pilot burner, a first valve controlling gas flow to the
tion, it is intended that all matter contained in the above
main burner, a gradually movable thermostatic con
description or shown in the accompanying drawings shall
trol means adapted in response to heat from said second
be interpreted as illustrative and not in a limiting sense.
pilot burner gradually to open said first valve and to
We claim:
shut said valve when the second pilot burner is ex
l. A gas regulator comprising a housing having an
tinguished,
a valve housing having an inlet, a main passage
inlet, a main passage in the housing, a main outlet, a first 50 in the housing, a main outlet connected with said ñrst
auxiliary passage and a second auxiliary passage in the
valve, a first auxiliary passage and a second auxiliary
housing and an auxiliary outlet, a manual valve control
passage in the housing land an auxiliary outlet connected
ling flow of gas from the inlet to the main passage and
to said second pilot burner, a manual valve controlling
also controlling ñow of gas from the inlet through said
ñow of gas from the inlet to the main passage and also
ñrst auxiliary passage to the auxiliary outlet, said manual
controlling flow of gas from the inlet through said first
valve adapted in a first range of opening positions there
auxiliary pass-age to the auxiliary outlet, said manual
of to cut off flow from the inlet through said first auxil
valve adapted in a first range of opening positions thereof
iary passage to the auxiliary outlet while communicating
to cut off flow from the inlet through said first auxiliary
the inlet with the main passage, and in a second range
passage to the auxiliary outlet while communicating the
also to communicate the inlet through said first auxiliary 60 inlet with the main passage, and in a second range also
passage with the auxiliary outlet, thermostatic valve means
to communicate the inlet through said first auxiliary
having two movable valve seats and a movable valve mem
passage with the auxiliary outlet, thermostatic valve
ber controlling gas flow from the main passage to the
means having movable valve seats and »a movable valve
main outlet through one seat and from the main passage
member therefor controlling gas fiow from the main
65
to said auxiliary outlet through the other seat and said
passage to the main outlet through one seat and from the
second auxiliary passage, drive means connecting the
main passage to said auxiliary outlet through the other
manual valve and said valve seats adapted to adjust the
seat and said second auxiliary passage, drive means con
necting the manual valve and said valve seats adapted to
latter, said movable valve member when said manual
valve is set in said second range being adapted 'thermo` 70 adjust the latter, said movable valve member when said
manual valve is set in said second range being adapted to
statically to vary gas liow by movement without entirely
vary gas flow by movement without entirely closing on
`closing on both of said seats and when said manual valve
both of said seats and when said manual valve is set in
is set in said first range to vary gas flow by movement
said first range to vary gas fiow by movement with com
_with intermittent complete closing on both of said seats.
_2. A gas regulator according to claim l, including a 75 plete intermittent closing on both of said seats.
3,065,913
l()
7. A thermostatic gas valve comprising a hollow body
having an inlet, a main outlet and an auxiliary outlet,
said tubular member adapted to pass gas through the
tubular member, the support also containing a passage
a threaded passage Ábetween the inlet and main outlet,
between said groove and said hollow stem, and a ther
said body having a port connecting the threaded passage
with said auxiliary outlet, a rotatable tubular member
threaded into said passage, the exterior of said tubular
member having an external groove communicating in its
Various rotary positions with said port, said tubular
mostatically controlled valve member movable to and
from said tubular member and having means engaging
member having two annular valve seats, one within the
other, said tubular member being in the form of a flanged 10
cup, the flange of which carries the outer seat, said cup
having a central hollow stem the end of which carries the
inner valve seat, said cup having an inside radial support
for the stem, said support having at least one opening
between said central hollow stem and the outer wall of 15
said seats.
References Cited in the ñle of this patent
UNITED STAÈÉS PATENTS
2,153,886
2,214,272
2,245,060
2,610,680
2,807,423
Grayson ____________ __ Apr. 11,
Dillman ____________ __ Sept. 10,
Waddell ____________ __ June 10,
Witzel _______________ __ Sept. 16,
Eskin _______________ __ Sept. 24,
1939
1940
1941
1952
1957
UNITED STATES >P_ÁITENT oFFICE
CERTIFICATE 0F CORRECTION
Patent No„ 3,065„913
November 2, 1962
Walter IIo HoIzboog et Ǥ11o
-It is hereby certified that error appears in the above >numberec'l pat
ent requiring correction and that the said Letters Patent should read as
corrected below.
Column 6, line 34, afízel.n "'envisaged" insert a comma;
line 69, after’ßeools“ insert a comme; column 7„ line l2,
after .'T’valve" lnsert -~-- 77 -»--.,
Signed and sealed this 21stv day of May 1963.
(SEAL)
Attest:ERNEST w. SWIDER~
DAVID L- LADD
Attesting Officer
Commissioner of Patents
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