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Jan. 14, 1947.
Original Filed April 25, 1941
3 Sheets-Sheet 1
Zouwdes Z1.” 1%: C'awzfy
$03M. 1w~ mm
Jan. 14, 1947.
|_. v. MccARTY
Original Filed April 25, 1941
3 Sheets-Sheet 2
Lourdes _% jVcC'a/"Q/
Patented Jan. 14,1947
Lourdes V. McCarty, Milwaukee, Wis., a'ssignor to
Milwaukee Gas Specialty Compa
Wis., a corporation of Wisconsin
,' Milwaukee.
Original application April 25, 1941, Serial No.
390,247, now Patent No. 2,349,443,‘ dated May
23, 1944. Divided and this application March
24, 1944, Serial No. 527,903.
‘ 4 Claims.
(01. 131-139) a.
i This invention relates to controlling means and
has to do more particularly with the mounting
More speci?cally, my invention has to do with
’ apparatus comprising a controlling member or
valve disc movable from one position to another
and operated by means of an electromagnet ener~
I gized by an electric current of slight power, such '
Serial No. 390,247, filed April 25, 1941, now
Patent‘No. 2,349,443, granted May 23, 1944.
Referring to the drawings, in Figure 1 the
burner I9 is any suitable or preferred main burn
er. It may be the main burner for a room or
space heater, or it may be the burner for a water
heater, or for .a ?oor furnace, an oven burner,
one or more top burners for a gas range, or any‘
as that generated by a thermoelectric generator
other burner. A fuel supply pipev ll leads to the
heated by a pilot light of a burner control appa 10 burner l0 for the delivery of gaseous or other
ratus, in which the electromagnet and control
fuel thereto-for example, throughv a mixing
ling member and associated parts, are disposed
chamber l2 to which air is admitted in the usual
within a suitable housing.
way, as well understood in the, art.
Because of the minute power available for
Interposed .in the fuel supply pipe II is the
operating a unit of this kind, it is necessary to 15 thermoelectric control and safety shut-off device.
maintain an- accurate relationship between the
indicated in its entirety at IS in Figure 1. The
component parts thereof. Since it is desirable
device I5 is responsive to the pilot burner ‘I6. It
to obtain ready access for assembly and servicing,
may also be responsive to a control device l1
it is preferable to construct a device of this kind
shown, for purposes of illustration in Figure 1, as
in such a manner that separating the housing
a thermostatically actuated switch which, in the
exposes the parts involved '11 usual servicing .and
case of a hotswater heater, may be subject to the
adjustment without further disassembling.
temperature of the water in the tank, or, in ‘the
The instant invention is directed to the pro
case of a room or space heater or floor furnace,
vision of an improved mounting for the electro
may be mounted in appropriate position within
magnetic operating unit and valve or control 25 the rooin or other space heated by the burner
ling member assembly, and, more particularly,
[0. Instead of being in the form of a thermo
an improved form of resilient mounting for as
statically actuated switch, the control device ll
- ,suring accurate positioning of the valve disc or
‘ may be of a character to operate, for example,
other controlling member with respect to the
upon the occurrence of an abnormal pressure in
valve seat or cooperating part. Further objects 30 the tank of a hot water heater, or upon the oc
and advantages of my invention will appear from
currence of-any other abnormal, defective, or in
the detail description.
suf?cient functioning of the apparatus. The
In the drawings:
room or space or portion of the apparatus or a
system to the temperature or other condition of
diagrammatic view showing an embodiment of 35 which the control device I ‘I is subject is indi
cated more or less diagrammatically by dot and
the invention in a pilot burner and main burner
dash lines l8 in Figure 1.
gas supply system;
The pilot burner it, which is located in jux
Figure 2 is a top plan view of the thermoelec
taposition to the main burner ill to maintain
tric control and safety shut-off device shown in
Figure 1;
40 a pilot ?ame for igniting the main burner, is
supplied with gaseous fuel by a pilot supply pipe
Figure 3 is a bottom plan view of the electro
i 9 which is shown as leading from the housing or
magnetic operating unit taken substantially on
case of the thermoelectric control and safety
the line 3~3 of Figure 5 and showing the valve
shut-off device i 5. This may vary within the
member, its operating lever, and the hinge
Figure 1 is a fragmentary and more or ‘less
mounting for the valve operating lever;
Figure 4 is a vertical transverse section on an
45 scope of the present'invention.
Referring now in detail to the thermoelectric
control and‘safety shut-01f device IS, the housing
enlarged scale and taken substantially on the
or case 22 for this device has an inlet at 23 and
line 4-4 of Figure 5, with the sealing cover for
an outlet at 24. The inlet 23 opens into the inte
the energy storing means removed; and
50 rior of the housing, and a partition or wall 25
Figure 5 is a vertical longitudinal section, also
separates the interior of the housing from the
on an enlarged scale, taken substantially on the
outlet 24. The partition 25 has an opening into
line 5—5 of Figure 2.
threaded a retaining ring 26 which se
This application is a division of my copend
ing application for Burner control apparatus, 55 cures a valve seat member 21 in place. The valve
seat member 21 de?nes an opening 28 for placing
with the outlet 24. [The upper end of the valve
to lateral lugs on the operating lever 18. The
lever 18 has 3. lug 16 offset upwardly therefrom,
and the valve disc member 38 or controlling mem
seat member 21 is provided with an annular valve >
seat 29 upon which the shut-off valve disc '38 is
adapted to seat to shut of! the supply of fuel to
. the burner l8.
_ her is secured to this lug 16 by a valve disc screw
A gasket may be provided at 3!. ,
18. The reduced outer end of the lug‘ 16 engages
in a slot 19 in the downturned lug 88 on the
Contiguous sections of the fuel supply pipe H‘
are connected to the inlet at 23 and to the outlet
mounting plate 56. Engagement of the reduced
at 24, as shown in Figure 1. A cover 34 is remov
10 outer end of the lug 16 with the lug 88 at the
ably secured upon and closes the top of the hous
‘ bottom of the slot 19 serves to prevent undue sep
ing 22. The cover 34 is shown as secured to the
housing 22 by screws 35, and'a cover gasket may
be provided at 36.
with the sealing plate. The opposite ends of the
hinge springs 13 are secured, for example, at 14
the interior of the housing 22 in communication
lv'aration of the valve disc 38 from the mounting
plate 56 and electromagnetic operator assembly,
particularly when the assembly is removed from
The electromagnetic ‘operator for the valve or
controlling member and the valve, valve lever,
and energy storing means constitute a unitary as
the housing 22.
At its opposite end the lever18 is provided cen-_
sembly which is carried by the cover 34, prefer
ably resiliently, as will hereinafter appear; This
assembly is enclosedwithin the housing 22 when
trally between its opposite sides with a down
wardly offset lug 82 having a pointed end' for
as of generally U-shaped form, although this‘,
relatively slight movement of the plunger 63. The
engagement. at 83 with the adjacent end of the
diaphragm pin 65, The lever 18, being hinged
the cover 34 is applied, and‘ is removable from 20 or fulcrumed close to pointedv'engagement at 83
the housing by removing the‘ cover.
with the plunger 63, provides for imparting rela
The electromagnetic operator includes an elec- .
tively great movement to the valve disc 38‘ with
tromagnet consisting of a magnet frame 48 shown
mounting plate 56 has any opening 85, and a rela
~ may vary. The coil 4| is shown as wound around 25 tively light coiled spring 86 is disposed through
one leg of the magnet frame, and the end of the'
this opening between the magnet frame 48 and '
other leg of the magnet frame is shown as turned
the lever 18 for returning the valve disc‘38 to
at 42 to position generally parallel to the arma- ' -'closed position upon deenergization of the elect‘
ture present a relatively large pole face to 30 tromagnet. The thermoelectric control and
the, armature. safety shut-off device is preferably positioned ver
>The ends of the magnet frame 48 extend
tically in use, as shown in Figures 1 and 5, in
through openings in a sealing plate 44, the margin
in which case I contemplate returning the valve
of which is turned or ?anged laterally to receive
‘disc 38 to closed position by gravity and without
a sealing cover 45 between which and the plate
the use of a spring, such as the spring 86, or
44 the pole faces of the magnet frame 48, the
by gravity in conjunction with the spring 86, or
armature 43, and the energy storing -means “ otherwise .as desired. A circular raised portion
are enclosed and ‘sealed. The armature' 43 is a 81 on the lever 18 engages vin the lower end con
hinged by hinge means 48 to a spacer 58 fixed
to/ or integral with the sealing plate 44.
volution of the spring_86 for holding the lower
hinge means 48 hinges the armature 43 in po
sition adjacent the pole faces of the magnet,
'38, holds the valve disc to its seat 29. When the
valve is closed, it requires the greatest force to lift
ably secured to the sealing plate, for example,
it or moveit from its seat 29, and as the valve
disc 38 is lifted or moved away from its seat‘ the
drop in pressure across the valve causes a rapid
by screws 52, and the cover, when in place, may .
limit movement of the armature away from the
electromagnet. \
drop in the force required to continue movement
of the valve disc 38 to full open position.
The magnet frame 48 is mounted on and car- *
ried by a mounting plate 56 which has a down
turned‘ lug 51 positioned against the back of the
The energy ‘storing means is shown as com
prising a pair of‘ ?at leaf springs 98 and 92 nor
‘ downturned end 42 of the magnet frame. Screws
mally disposed in substantially parallel relation.
58 secure the sealing plate 44 to the downturned
' lug 51 on the mounting plate 56. A sealing gasket
housing 22, acting upon the top of the valve disc,
of spring character to maintain the armature
in the desired position. The cover 45 is remov
It will be noted that the gas pressure within the
I frame, and the hinge' means 48 is preferably
is preferably‘ provided at 59. ‘
end of-the spring in place and against lateral
The .upper ends of these leaf springs 98'and 92
are attached to the armature 43, for example, by
a screw 93 threaded into an armature bushing
The armature 43 and the downturned end 42
94, which bushing 94 in. turn is suitably secured
of the magnet frame have registering‘ openings
fixedto the armature 43. Spacers are provided
62. A plunger 63, movable endwise in these open
at 95, one between the armature 43 and the spring '
ings, is secured to the center of a flexible dia
phragm 64‘ by adiaphragm pin 65. The dia 60 98, and the other between the spring 98 and the
phragm 64 is clamped in place to‘the back cf ~ spring 82. A retaining clamp 96 is provided be
,tweenthespring 92, and the head of the screw
the downturned lug 51 on the mounting plate
56 by a, retaining plate 66 which may be secured
An adjusting pressure screw 98, threaded
in place by the lower screws 58 and cooperating
nuts (not shown), or otherwise as desired. The 65 through the spring 98 near its lower end, has end
- wise engagement‘ with the plunger 63, preferably
retaining plate 66 and the downturned, lug 51
extending into an axial opening in the plunger
of the mounting plate 56 have registering open
as shown in Figure 5. A second adjusting pres
ing's and the diaphragm 64 seals the space be
sure ‘screw I88 is threaded through the spring 92
tween, the sealing plate 44 and the cover 45
against the entry of deleterious matter through 70 near its lower end, and the pointed inner end of
the openings 62.
. the screw I88 is adapted to engage or contact the
spring 98 after initial tensioning of the spring
‘A valve or controlling member operating lever
18 is hinged at 12, 12 (Figure 3) by a pair iof a I 98, as will presently appear. In that the spring 98
alone is tensioned in the initial movement of the
hinge springs 13 to lugs on the sealing plate 44,
or to lugs on ‘a mounting plate secured in place 75 armature from retracted to attracted position,
the pointed inner end of the screw I00 is normally
spaced from or out of contact with the spring
96 as shown, for example, more or less diagram
matically in Figure 5. The screws 68 and I00 are
j outer tubular lead conductor I26 is grounded to
adjustable to adjust the action of the device, and
may be locked in adjusted positions as desired, ‘
tension clamps being indicated more or less dia
grammatically‘ at I02 and I03 respectively. The
spring 92 has an opening I04 which operates over
the head of the screw 98 to permit movement of 10
the spring 92 toward the spring 90 "and free of
the spring 90 in the initial movement of the ar
mature to attracted position.
The top of the housing 22 is shown as provided
with an outlet IIO to which the pilot supply pipe '
I9 is adapted to be connected by a threaded cou 15
pling or union member II2 for delivering gaseous,
fuel to the pilot burner I6. The outlet H0 is
shown as provided with a pipe cap II4 which, of
course. is vremoved in connecting the pilot supply
pipe I9 to the outlet H0.
the cover 34 of thehousing 22 through a bushing
I32 and the connector sleeve I22, to the internally
threaded boss I34 on the cover 34.
One end of the coil 4I (Figure 5) is secured to
the under side or the cover 34 by a binding screw
I40, and thereby is grounded to the cover 34 and
thus connected to the outer lead ‘conductor I26.
The other end I42 of the coil 4| is connected to
a terminal post I43 ?xed in a boss I 44 on the cover
I4 and insulated therefrom by a terminal bush
ing I45. The terminal tip I20, which is insulated
from the cover by an insulator bushing I48, is
connected in circuit with a second terminal post
I50 by a connector strip I52. An insulator strip
is provided at I53 (Figure 4). The terminal post
I50 is fixed in a boss I55 on the cover 34 and is
insulated therefrom by a terminal insulator I56.
An insulating terminal board I56 is mounted
1 20 across the tops of the bosses I44 and I55, suit
For the purposes of illustration, the thermo
electric generator, which is energized'by the heat
01' the pilot ?ame for supplying thermoelectric “
current to the thermoelectric operating circuit 25
for energizing the electromagnet, is shown more
.or less diagrammatically as a thermopile II5
comprising a plurality of thermocouples-three
being shown-connected in series. This, of
course, may vary within the scope of the pres
ent invention, any thermoelectric generator
which will generate the required thermoelectric
current being contemplated within the scope of
the appended claims.
able washers being provided at I56, and the upper.
ends oi! the terminal posts I43 and I50 being
peened over or otherwise formed to secure the
terminal board in place.
Where a thermostat or other condition respon
sive device is employed as indicated at I1 in Fig
ure 1, the leads I62 and I63 for this device are
i connected to the terminal posts I43 and I 50 by
' suitable binding screws I65. The thermostat or
other condition responsive device I‘! is thus placed.
in series circuit relation with the thermoelectric
generator and the coil 4| of the electromagnet.
To assure accurate positioning of the valve
disc 30 or other controlling member with respect
Suilice it for purposes of the present applica
tion to state that each of the three thermocouples 35 to the valve seat 29 or cooperating part and in
dependently, for example, of the attachment of
of the thermoelectric generator I I 5 comprises the
the cover 34 to the housing 22, I provide a resilient
usual or any suitable elements H6 and II‘! of .
mounting for the electromagnetic operator as
diii'erent thermoelectric characteristics, each pair
sembly. This resilient mounting comprises four
of said elements being joined at II6 to provide
the “hot Junctions” which are placed in position 40 vertically elongated screws or posts having their
heads disposed beneath the mounting plate 56
to be heated by the pilot ?ame as long as the
and their shanks extending up relatively loosely
pilot ?ame is burning. Any other suitable
through openings in the mounting plate. The
thermoelectric or electric generator may be em
upper ends 01' the screws or posts I15 have thread
The lead conductors for the thermoelectric 45 ed engagement at I16 with the cover 314, and
springs I16 are coiled about the respective posts
generator may be of the type more fully disclosed
interposed between the cover 34 and the
in Oscar J. Leins Patent No. 2,126,564, granted
mounting plate 56. When the cover 34 is applied,
August 9, 1938, or the construction of the thermo
the electromagnetic operator is positioned with
electric leads may be of any other suitable or pre
50 in the housing‘ 22 and the mounting plate 56
' .
seats upon horizontal seating surfaces I80 on the
For the purpose of this description, su?ice it
interior of the housing 22, thus assuring accurate
to state that the thermoelectric lead conductors
positioning of the valve disc with respect to its
comprise an inner lead conductor I25 and an
valve seat 29. The cover 34 may be clamped in
outer tubular lead conductor I 26 surrounding
the inner lead conductor. The inner lead vcon 55 place, and any improper ?t of the cover or non
uniformity in‘ the clamping of the same in place
ductor is insulated from the outer leader con
will not disturb the proper positioning of the
ductor, for instance, by a wrapping of insula
valve disc 30. The heads at the lower ends of
tion I21 (Figure 4) on the inner lead conduc
screws or posts I15 are shown in Figure 4
tor. One terminal of- the ‘thermoelectric gen
erator is shown more or less diagrammatically as 60 as spaced below the mounting plate 56 and as
positioned in recesses I82 in the housing 22.
connected at I28 to the outer tubular lead con
The operation of the control system of Figure 1
ductor I26. The other terminal of the thermo
is described in detail in my above identi?ed co
electricvgenerator is shown as connected at I30
pending application and need not be stated! here.
to the inner lead conductor I25.
The embodiment of the invention shown in
A quick detachable or removable connection is
the drawings is for illustrative purposes only, and
preferably provided between the electromagnet
oi’ the thermoelectric control and safety shut-o?'
it is to be expressly understood that said drawings
and the accompanying speci?cation are not to be
device and the ends of the leads I25 and I26 op
posite the ends which are connected to the 70 construed as a de?nition oi’ the limits or scope ‘
of the invention, reference being had to the ap- thermoelectric generator. -The inner lead I25
claims for that purpose.
has a connector cone I28 which seats in the cor
I claim:
rrespondingly recessed outer end of the terminal
1. In combination, a housing, a‘ controlling
tip I30, and is clamped in contact therewith by
member within said housing, a cover for said
a connector sleeve I32. The adjacent end of the 75 housing,
operator means within said housing,
- 2,414,886
having mechanical connection with the controll
ing member for supporting said controlling mem- ~
her and operable to operate the controlling mem
ber; a supporting member for mechanically sup
porting said‘ operator means, and means resilient
ly mounting said supporting member on said
cover and including abutment means within the
vided with a valve seat, a valve member within
said housing and‘adapted to'close against said
seat, a cover for said housing, operator means
within said housing having mechanical connec
tion with the valve member for supporting said
valve member and operable to open the valve
member, a supporting member for mechanically
supporting said operator means, and means resil
housing upon which said-supporting member is
‘ iently mounting said supporting member on said
adapted to seat to assure accurate positioning of
cover and including abutment means within the
' the controlling member and independently of the
housing upon whichsaid supporting member is
attachment of the cover to the housing.
adapted to seat to assure accurate positioning of
2. In a device of the class described, a valve
' housing having an inlet and an outlet, a parti
the valve member with respect to said valve seat
and independently of the attachment of the cover
tion wall separating said inlet from said outlet
to the housing.
and having a valve. opening provided with a valve 15
4. In combination, a housing, a controlling
seat, a valve member adapted to close against
member ‘within said housing, a cover for said
said seat, a cover for said housing, operator means
housing, operator means within said housing hav
within said housing having mechanical connec
‘ing mechanical connection with the controlling
tion with the valve member for supporting said
member for supporting said controlling-member
valve member and operable to open the valve
and operable to operate the controlling member,
member, a supporting member for mechanically
a supporting member for mechanically supporting
supporting said operator means,.and_ means re
said operator means, means carried by said hous
siliently mounting said supporting member on
ing for cooperation with said controlling mem
said cover and including abutment means with
ber, and means resiliently mounting said sup
in the housing upon which said supporting mem
porting member on said cover and including abut
her is adapted to seat to, assure accurate position
ment means within the housing upon which said
ing of the valve member with respect to said valve
supporting member is adapted to seat to assure
seat and independently of the attachment of the
accurate positioning of the controlling member
cover to the housing.
with respect to said cooperating" means.
3. In combination, ‘a housing, means carried by 30
said housing and de?ning a valve opening pro
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