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Патент USA US2409113

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Oct. 8, 1946.
2,409,112
E.- J. DILLMAN
AUTOMATIC VALVE
Filed June 5, 1942
IO
s Sheéts-Sheet 1
INVENTOR
W
.
BY
W lCM
M'ATTORNEY
§atented Get. 8, 1946
2,409,112
omen STATES PATENT OFFICE
2,409,112
AUTOMATIC VALVE
Earnest J. Dillman, Detroit, Mich., assignor to
Detroit Lubricator Company, Detroit, Mich.) a
corporation of Michigan
Application June 3, 1942,‘ Serial No. 445,571
27 Claims.
(01. 137-139) '
1
2
This invention relates to new and useful im
provements in an automatically actuatedvalve
for controlling ?ow of ?uid and, more particu
larly, to a valve having a thermostatic operating
.Fig. 11 is an enlarged detail view in section of
means.
the valve member showing the position of certain
of the parts as the valve member leaves its seat
or makes initial contact therewith;
Fig. 12 is a detail View showing the operation
of the heat motor compensating means;
One object of the invention is to provide a valve
which has a quick initial opening movement and
Fig. 13 a detail View showing a heat abstract
which has a quick closing movement from a point
ing ‘means applied to the heat motor, and
adjacent its closed position.
Fig, 14 is a detail view showing the full travel
Another object is to provide a valve having a 10 position of the heat motor and the cooperation
stepped movement.
,
of the abstracting means therewith. »
Another object is to provide means to deter
mine the extent of initial quick opening of the
Referring to the drawings by characters of ref
erence, I designates generally a furnace, boiler
Valve.
or the like having a gaseous fuel burner 2 sup
Another object is to provide a novel electrically 1.5 plied ,by a gas line or pipe 3 and operable to sup
energized heat motor for operating the valve.
ply heat to a room or spacehaving a tempera
Another object is to provide means to compen
ture responsive control switch 4‘, such as a room
sate for variation in ambient temperature to
thermostat, In the pipe 3 and controlling, the
which the heat motor is subjected.
flow 0f gas therethrough there is the electrically
Another object is to provide means to compen 20 operated valve 5 of this invention. Within the
sate for variation in heat input to the heat motor.
valve housing '6, see Fig. 2, there is a terminal
Another object is to provide means to discharge
block ,6‘? of electric insulating material having
heat from the heat motor.
terminals or binding posts 7, 8 from which ex
The invention consists in the improved con
tend lead wires 9, l0 respectively, The ?xed con
struction and combination of parts to be more 125 tact H of the thermostat 4 is connected to the
fully described hereinafter and the novelty of
lead wire 9 and from temperature actuated con
which will be particularly pointed out and dis
tact i2 of the thermostat 4 a lead wire it con
tinctly claimed.
nects to the secondary coil l4 of a step-down
In the accompanying drawings, to be taken as
transformer l5 which has its primary coil It
a part of this speci?cation, there is fully and . 130 connected to a suitable source of current supply.
clearly illustrated a preferred embodiment of said
Lead wire Iii connects to the. other side of the
invention, in which drawings:
secondary coil M. The usual pilot burner ll is
Figure l is a diagrammatic view of a heating
provided for igniting the main burner 2 and is
apparatus showing the valve of the invention op
connected to the pipe 3 on the inlet side of the
eratively positioned therein;
valve 5.
'
'
Fig, 2 is a top plan view of the valve but hav
ing its cover member removed to show internal
way .therethrough having an inlet l9iand an out
construction;
let, 29‘ communicating through a valve port 2i
.The'valve 5 has a body It with a ?ow passage
Fig. 3 is a view of the valve in section on the
line 3-3 of Fig. 2;
-
' 24,0
provided with an annular seat 22 and opening
through a partition 23. The upper open side of
the valve body vl8 is closed by a bonnet it having
an aperture 25 therethrough concentric with‘the
Fig. 5 is a view in section on the line 5-—5 ‘of
port 2|. Clamped at its periphery between the
Fig. 3 but showing the valve body in end eleva
body 18 and the bonnet 2ft, there is a ?exible
45 diaphragm member 26 which seals communica
tion;
Fig. 6 is a detail View in section on theline 6-5
tion between the interior of the body 18 and the
of Fig. 4;
interior of the bonnet 2%. A valve stem. 2? ex
Fig. 4 is a view in horizontal section on th
line ¢i—-ll of Fig. 3;
Fig. 7 is a detail view in section on the line
tends through a central aperture in the dia
71-1 of Fig. 4;
phragm 26 and .hasa cupped metal reinforcing
Fig. .8 is a bottom plan view of the heat motor 150 washer 28 secured thereto and against which the
for actuating the valve;
diaphragm is clamped by a cupped Washer 29
Fig. 9 is a detail view in section on the line
on of Fig. 8;
Fig. 1-0 is a detail exploded view in perspective
urged to clamping. position'by a sleeve nut '38
screw-threaded onilio the stem '27,. The nut 33
has a surrounding .?ange'tl on which is seated
of the elements which comprise the heat motor; 55 a valve member supporting vhelical spring 32,
2,409,112
3
The valve member 33 has a cylindrical cap 34
which surrounds the nut 33 and has a downward
facing internal shoulder which seats on the upper
end of the spring 32. The cap 34 supports a
valve washer backing member 35, against which
the valve Washer or disc 36 is clamped by a hol
low screw 31. Within the screw 31 there is an
annular valve stem guide 38 in which the lower
reduced stem end portion 39 is- reciprocally
guided.
The guide 38, see Fig. 11, seats on a
shoulder within the screw 31 to provide an in‘- '
4
of truncated triangular form having a side face
adjacent its longer base lying ?at against the
under face of the bar 61. The ‘bimetal plates 88
and. 39 are clamped and tightly held in position on
the bar 6? by bolts and nuts 10 which extend
through transverse apertures ‘H through the bar
6'5, see Fig. 9. The plate 68 at its smaller base or
free end has, midway up its side edges, a rectan
gular'notch or recess 12. The end edge of the
plate 38 at the sides of the notch 12 has a down
ward offset bearing portion 13 formed by a bend
of V-shaped cross section. Extending through
the notch '12 there is an adjustable supporting
post ‘'54, having a circumferential recess to pro
ternal chamber 3553 in which there is positioned-Z
a resilient spring disc 40 which tends to freeze
into upwardly concave position. asiin' Fig. 11.‘
vide an end ?ange or head 15 on which the por
Upon seating of the valvev member '33 upon its 15 ' tions' 13 seat or rest. The upper end portion 16 of
seat 22, force applied to the stem 2‘! will move the
‘the post ‘id is adjustably screw-threaded in a
lower stem end portion 39 through the guide 38, ‘
vertical aperture through the cross member 44, a
and compress or flatten out the spring 40, as in
set screw it being provided to lock the post 74
Fig. 3, so that the valve member 33 is positively
in adjusted position. The free end portion of the
20
held against its seat.
plate ?slhas midway of its side edges a rectangu
The bonnet ‘24 has an upward extendingsup
porting member 4| with laterally spaced parallel
supporting pillars or'posts 42, 43 which are joined
lar recess ‘i8 which receives the valve stem 21 and
which-provides parallel arms 13, til which he be
tween the collar ?anges 53, 54. The arms ‘I9, 80
at their upper ends by across frame member 44.
have offset upward extending bearing portions
The stem ‘2'17 extends upward and out of the valve 25 Bl, 82 respectively of substantially inverted V
casing bonnet 24 through a guide member 45
shape in cross section and engaging at opposite
secured in the bonnet aperture 25. The stem is
points
the under side of the ?ange 53. The arm
positioned a substantially equal distance between
80 has a transverse end flange or ?nger 83 which
the pillars 4.2, 43 and at its-upper end extends
extends generally parallel to the stem 21 for abut
through a guide ring 46' secured in a vertical so ting engagement with the top face of ?ange 54.
opening 4'! through the cross member 44; vSup
The ?nger 83 is of such a length that when the
ported on the bonnet 24 and, surrounding the
bearing portion or abutment 82 is in engagement
valve stem 2'.’ there is a supporting sleeve48,
with the ?ange 53, the ?nger 83 will be slightly
preferably screw threaded, into the bonnet aper 1'35 away from contact with the ?ange 54 so that
ture 25 and locked in position by a- set screw 49.
warping or bending of the plate 69 will not cause
On the upper end of the-sleeve 48 there he hori
binding of the arm 8%] between the ?anges 53, 54.
zontal annular magnet 5| 'whichsurrounds- the
Bent or formed from the plate 69 there are spaced
stem 21 and is secured to the ?ange 50- by solder,
clips or clamping lugs 84 which are substantial
the sleeve 48 being adjustable to regulate the-po
ly midway of the arms '19, 80 and substantially on
sition of the magnet. Cooperable with the mag
the line of the base of the recess ‘i8, extending
net 5l there is an armature 52, preferably in the
therefrom toward the bar 31 in underlying rela
form of a collar having ‘upper and'lower ?anges
tion to the plate as. Clamped to the under face
or abutments 53, 54 respectively and which is'se
of the plate?il by the clips 34 there is an electric
cured to the stem 27 by a cross pin 55.‘ The arma
resistance heating coil 83 which is wound in zig
ture 34‘ is held from engagement withthe mag- ‘ zag form on the upper face of an insulating ma
net Si by the engagement of the valve member 33
terial sheet 36, preferably of mica. The sheet
with its seat 22 so that an air gap is maintained.
86 is generally of truncated triangular form to
Supported on the bonnet-24 there is a housing
conform to the plate 69 and has longitudinally
56 having a bottom wall 5'! with a central open ‘I50 ‘spaced side'edge tabs or ears 8'! around which the
ing through which the supporting member 4|
turns of the wire coil 85 are bent so that the coil
extends, the wall 51 being secured by screws 53
is secured and held in position. The lead wire
to the bonnet. The terminal block 6a is secured
portion 88 extending from the smaller end of the
to the bottom wall 5'1 by screws 59. The housing
coil 85 is threaded through apertures in the sheet
56 has upwardly extending end-or side walls 60, 555 86 so that it is insulated from the turns of the
El and a cover member 52 of substantially U
coil by the sheet, the end of portion 83 being elec
shaped cross section so that it provides a top wall
trically secured to a terminal eyelet 89 of a bind
and side walls which are ?anged, as at 63, to em
ing post screw 93. The eyelet 89 clamps the sheet
brace the end walls and tightly close'the housing.
86 to an insulating sheet 9| which overlies the
Secured to the end wall 63 there is a bracket or
portion 88, the sheets 86 and Si having end
supporting member ‘34 having horizontally spaced ;T560 wire
tabs 92, 33 respectively through one overlying
bearing arms 65 positioned in vertical planes and
pair of which the hollow or eyelet rivet 89 is se
having open-end recesses or hearing apertures to
cured. Interposed between the coil 85 and the
receive the end trunnions 6B of a supporting bar _ plate 39 there is a sheet of insulating material 94
31 of heat insulating material. The upper ‘and p65 which is apertured for passage of the screw 96
lower surfaces of the bar 61 are ?at substantial‘
therethrough but which has its marginal portion
ly parallel faces extending generally in‘ horizon
surrounding aperture interposed between the
tal planes, though movable therefrom upon ‘rock
rivet 89 and the plate 69, the aperture through
ing of the'bar 61." Secured to the bar’ 61 there is _ the plate 69 being su?iciently large so that the
a temperature responsive compensating element
38 which is a substantially ?at bimetal plate of "70 screw 99 does not have contact therewith, see Fig,
truncated triangular formhaving a side face-ad
jacent its longer base lying ?at against ‘the top
face of the bar 61'. Also secured to the bar 61,
9. The other terminal end portion 95 is threaded
through locking apertures in the sheet 83 and is
electrically connected to and clamped by a hollow
there is a temperature responsive operating ele _ rivet I or eyelet (not shown) which secures to
ment 39 which is a substantially'?at bimetal plate “7-5 ‘gether another of the pairs of cars 92, 93 in simi
aaoana
lar fashion to that of rivet89. Cooperablewith
cam surface I22 is urged toward the stop meme
ber ;I.23:and normally held thereagainst by ‘a coil
which is also insulated from the’ plate .69, the
spring 125 having one end anchored to :thelever
screws Si) and at being threaded into the bar .651.
arm
and'having its other end anchored to
The purpose of the tabs 92, 93 is to permit the
a. lug on the adjustment lever £24. The stop
rivet heads to- lie between the sheets :86 and .913,
member ‘I23 is held in adjusted position against
that is, so that the sheets 86 and BI will not be
the force of spring I25 by an adjustment screw
engaged by the-clamping nuts and bolts it which
1% carried by a horizontal end projecting :from
might break or injure the insulating sheets Sit
thehracket ?ange I06. The screw I26 also serves
and
Connected to the terminal-screws 9B, 95 10 to adjust the position of the stop ‘member I23
there are lead wires 9?, 98 respectively whichex
along the cam surface 122 and thereby positions
tend to the terminal block LGE and have their ends
the roller 5 2| relative to the collar ?ange?d when
connected respectively to the terminals ‘l, 8.
the valve member is in closed position. The lever
this second rivet there is a terminal screw 95
The step control ‘or means for limiting the ex
arm :I I8 extends through a slot i2‘! in the rear
tent of initial valve opening movement is car 1-5
bracket wallso .that, if desired, the valve member
ried by a supporting bracket member 99 secured
' may ‘bemanually ‘moved to open position 'by?n-ger
to the post or pillar 42. The bracket member 99
pressure on the projecting end of the lever .arm
is in the form of an upright channel having side
?anges iilil, IilI joined at their rear substantially
vertical edges by a rear or base wall I02. The
?ange or side wall Iiid has intermediate its ends
a horizontal boss or raised portion I93, see Fig. 6,
H8 will move the roller 'I2I into lifting engage
ment with the under face of the collar ‘?ange
53., The spring I 25 has a straight mid portion
which, together with the lower edge portion Hit
of the ?ange, provide bearing surfaces for abut
ment of the arm M9, the spring I25 can move at
ting engagement with the side face or edge. L95
of the post 432 so that the plane of the ?ange
iilil is at a slight angle to the face of the post
132. Perpendicularly through the ?ange H30 there
is an internally screw-threadedaperture I96 into
which is screw-threaded a supporting rod or
post i?l which extends through a bore or aper
ture I58 in the post 4%, the bore I08 being at
i158, that is, downward movement of lever arm
528 so that on upward or counterclockwise move
its lower end to bring the spring substantially
into dead center position in which it will exert
substantially .no force tending to move the lever
iii. The spring 125 acts at a very acute angle
upon the lever 5 I1 so that it ‘has only a slight
increase of tension on upward movement of the
lever arm I is and has, due to the decrease in
the angle of application of its component of force,
a decreasing resistance upon initial upward
movement of the lever arm II9.
right angles to the post face “95. Therefore,
when the bearing surfaces I93, I04 are drawn
Supported .by the post 43 there is a manual
up against the face I85, the post I61 will be radi 35 means I29 for holding the valve inopen position
ally tensioned against upper and lower points
in the event of current failure for example. This
or areas at the opposite ends of the bore I98
means is provided by a spring retracted thrust
so that the bracket member 99 will be rigidly
member I30 reciprocally supported in a cham
held in position ‘and particularly against any
bered bolt I3I clamped through an aperture in
downward shifting movement which would alter 40 the post it. Upon upward movement of the
the set position of the mechanism supported
thrust member 1353 against the force of the re
thereby. The bracket memberil? is held against
tracting spring 132, see Fig. '7, the inner end or
the post 54 by a stiff helical coil spring H39 under
head of the thrust member can be positioned
compression between the post t4 and the head
beneath the plate extension or arm 89 when
IIEI of the rod It'll. A screw adjustment is pro-- L the valve member has been manually lifted so
vided for seating and permanently holding the
that the thrust member can be moved into posi
bracket 93 in an adjusted rotary position relative
tion between the flanges 53, 54. “In this position
to the post 46 and which provides for a setting
of the valve member, it is not fully opened and
in manufacture of the relation of the mechanism
therefore upon resumption of the current sup
carried by the bracket member 99. This adjust
ment is provided by a screw ‘III extending
through a slot aperture H2 in an ear .I I3 pro
jecting downward from the bottom end .of the
wall I as, the screw being threaded into a lug
I54 rigid with the valve bonnet 24. A compres-‘
sion spring I i5 interposed between the ear H3
and the lug Hi1 serves to hold the ear I I3 against
the head of the screw I I l during adjustment, the
screw head and ear preferably being locked to
ply the thermostatic heat motor will be operable
to lift the weight of the valve member from
the thrust rod I353 so that the spring I32 can
return the thrust member to inactive position
as in Fig. 5.
The operation, assuming the valve to be in—
stalled in a heating system as in Fig. l for exam
pie, is as follows: The adjustment screw ‘M has
been set in position to determine the time of the
heat motor. Rotation of the screw
to move
gether by solder after adjustment. ‘Bridging the 60 its supporting ?ange ‘i5 downward will increase
space between and extending through the ?anges
the time period required to move the valve to
Hit, it! substantially midway the height of the
open position and provide a corresponding shorter
bracket member and adjacent its front edge, there
time to close, whereas lifting of the ?ange TF5 by
is a bearing shaft or pivot pin H3 on which is
screw rotation will decrease the opening time
journaled a lever stop member II'i having oppo
sitely directed substantially horizontal arms II 8,
i it and a downward directed arm I25. ‘The arm
iii} extends between the collar ?anges'53, 54
and provided with a friction eliminating roller
iZI cooperable with the top face of the ?ange
54. The top face of the arm H8 is curved to
provide a cam abutment surface I22 cooperable
with an adjustable stop member I23 which pro
jects transversely from anadjustment lever I24
journaled on the bracket flange I119. ‘The arm
-65 period and provide a correspondingly longer clos
ing time, The stop adjustment screw I 26 will also
be adjusted to determine the extent of the ?xed
step of valve opening movement and therefore
the minimum flow setting of gas supply to the
70 vburner ,2. When the room, thermostat 4 calls for
heat and closes contacts Ii and I2, the heat mo.
tor resistance coil 85 will be .energized and im
part heat to the thermostat plate 69. Because
of theshorter length and .area ‘of the compensat
75 ing plate (i8 relative to'thelength and area of the
2,409,112
7
valve Operating plate G9. the screws") are em
ployed toprovide some heat leakage by conduc
tion from the coil 85 and plate 69 to the plate 68
in order to compensate for this difference in plate
sizes, When the force exerted by the heat motor
against the ?ange 53 of the armature member 52
is sufficient to overcome the attractive force of the
magnet 5I then the valve stem 21 will be moved
will- engage the lower'collar'flange 54 and posi
tively move the valve member toward closed posi
tion. When the valvemember has had initial
downward movement on cooling of the plate 69,
the increasing component of force of the spring
I25, due to change in the position of lever II‘I
by its engagement. with ?ange 53, will move the
roller I2I into engagement with the ?ange 54
so that increasing component of force will act
upward quickly until the ?ange 54 on the ,arma
to move the-valve member toward closed position
ture member engages the step determining roller 10 when the armature ?ange 54 reaches a position
I2 I . This movement will position the valve mem
such that the armature 52 is in the effective ?eld
ber in minimum desired open position, supplying
of the magnet 51, then the attractive force of the
sufficient gas to the burner 2 to assure a flame
magnet will pull the valvestem 21 quickly down
which will not ?ash back. This initial step of
ward and shut oil the gas ?ow with a snap action.
15
opening movement will occur with a. quick sub
Should the ambient temperature surrounding the
stantially snap action due to the decrease in flux- '
valve 5 during a standbyperiod of the burner 2
density as the armature flange 54 is moved away
be relatively cold so that the :bimetal plate 69
from the magnet ‘5|. The resistance to further
would warp to a downward concave position,
open movement of the valve which is exerted by
thereby
tending to hold the valve member closed
the component of force or spring I25 will now 20 and which would result in an excessive time period
provide a hesitation period or time lag of say 8
for valve opening movement after energization of
to 10 seconds during which the minimum supply
the heat coil 85, then the bimetal compensating
of gas will be furnished to the burners 2 in order
plate 68 will correct for this ambient temperature
to properly warm up the burner structure prepar
change. Since the plate 68 is subjected with the
atory to full supply of gas. When the energy 25 plate 69 to the low ambient temperature, the plate
stored in the plate 60 by the heat imparted there
68 will likewise bend into a downward concave
to from the coil 85 becomes su?icient to overcome
position and rock the supporting bar 61 in a
the component force of spring I25 and initiate
clockwise direction facing Figs. 3 and 12, thereby
the second step of upward valve opening move
automatically adjusting the position of the plate
ment, the valve will be moved quickly with a sub 30 operating arm 80 with respect to the closed valve
stantially snap‘ action through the remainder of
member. The valve will therefore :be opened at
its range of opening movement and to full open
a. lower temperature of the plate 69 but without
position determined by engagement of the dia
phragm supporting disc 28 with the top wall of
the bonnet 24. In this position of the parts, cor
responding to full open position of the valve, the
spring I25 will be exerting substantially a zero
component of force against the valve stem 21 so
that the valve member will be held in open posi
any substantial change in the elapsed time period
following energization of the coil 85.
Referring to Figs. 13 and 14 there is shown
means for abstracting heat from the thermo
static valve actuator. Secured to the cross bar
61 and clamped thereto beneath or in underlying
to the compensating plate 68 by the nuts
tion substantially solely by the upward force of 40 relation
and bolts ‘I0 there is a resilient heat conducting
the heat motor. It may be noted that the de
plate I40 which is of generally truncated trian
crease in resistance exerted by the spring I125 par-'
tially compensates for the decreasing in force of
the heat motor as it moves the valve to its full
open position. Since the heat motor is enclosed
in a substantially air tight housing, the ambient
temperature within the housing will be increased
by the heater coil 85 during the period that the
valve is held in open position by the heat motor
and therefore the cooling time of the heat motor
and plate 69 will increase in accordance with the
length of time that the heat motor is maintained
energized. In order to compensate for this am
bient temperature change which would render
the valve closing time or period irregular, the‘
bimetal compensating plate 68 is provided. As
the ambient temperature increases, the plate 68
will warp in a downward bowed direction as in
Fig. 12, thereby rocking the supporting bar 6'!
counterclockwise facing Figs. 12 and 3 so that
the tension of the operating plate 69 against the
?ange 53 will remain substantially constant. This
gular 'form in plan view conforming to the out
line of plate 68 and preferably of hard copper
and of about 0.005 inch thickness. This plate
I40 ‘has a down-turned portion I4! which lies
substantially against a face of the bar 61 and
extends toward the heat motor element 60. From
about midway between the plates 68 and E9 the
50 plate I40 extends toward the valve stem 21 and
is of longitudinal form being convexed down
ward. The plate I40 is in spaced relation to the
plate 89 when the valve is in full closed position
and terminates at its free end adjacent the arma
55 ture member 52. When the heat motor coil 85
is energized, the operating plate 89 will warp
upward, lifting the valve- member and its stem
21 as above described. When the valve member
has been moved through the major part of its
60 opening travel, the operating plate 69 will be
positioned su?iciently in the dotted line position,
Fig. 13, designated “partially opened position,”
in which position the plate 69 will initially con
compensating plate 68 will also compensate for
tact the conducting plate I40. The resistance
variation in heat input to the operating plate 69
which will result from voltage variation.' This 65 offered by the resilience of the plate I40 to con
tinued opening movement of the valve is not suf
voltage compensation will result both from heat
ficient to interrupt its continuous opening move
imparted to the plate 08 by radiation and con
ment by the heat motor so that the valve will
vection and also by conduction through the
have its full opening movement as heretofore
clamping screws ‘I0. When the room thermostat
70
described. With the valve in full open position
4 is satis?ed and opens the circuit to the heating
the conducting plate I40 will be in good heat
coil 85 the valve will tend to move to closed posi
conducting relation with the operating plate 69
tion by its weight as the holding force of the op
and will carry away therefrom the heat impart
erating plate 60 decreases. Should the valve stem
ed thereto from the resistance coil 85. Some of
21 not move downward by gravity as the plate
69 tends to straighten out, then the finger” 75 this conducted heat will be transmitted to the
Qatar-12
'10
compensating plate 88 and some will bev radiated
said spring having one end anchored to. said
to the air in the heat motor housing. This ad
armand its other end anchored to, said stop mem
ber and being supported thereby in a position to
ditional heat radiated and conducted to the plate
exert a decreasing component of force iniopposi
68 will increase its downward convexing bowing
with less time lag than occurs with the construc~ or tion to opening movement of said valve member
tion of Fig. l2 and also serves to warp the plate
upon movement of said
and. to exert sub
68 in substantially complete compensation for
stantially no resistance to opening movement of
the warping and tension of the operating plate
said valve member. in the full open position~ of
69 so that upon cleenergization of the heating coil
said valve member, said thermostatic means. act
85 there will be a very quick response by the 1.0 ingupon temperature increase to. overcome said
spring.
.
.
operating blade or plate 69 with resulting move.
4. An automatically operable valve, comprising
rnent of the valve member and its stem Elto
a valve casing, a valvemember in said. casingand
ward closed position. It may be‘ also-noted, that
the conducting plate M3 aids in' the rate of cool
having a stem extending out of said casing, ther
ing of the operating plate 65 because it con
mostatic means operable tomovesaid valvemem
tinues to abstract heat from the plate 59 as the
free end of the plate moves downward.
ber toward open. position, said stem having an
abutment, a supporting bracket pivotally mount.
ed for adjustment on» said casing, an- arm piv
oted on said supporting bracket and. extending
20 into the path of movement of said abutment, said
Patent of the United States is‘:
arm having a range of adjustment. to determine
1. An automatically operable valve, comprising
the spacing of said arm. from said abutment’ in
a valve casing, a valve member in said casing
valve member closed. position, a. spring acting
and having a stem extending out of said casing, an
through said arm to oppose opening movement
abutment member of magnetic material surround
ing and secured on said stem external of said cas
of said .valve member, means to. adiust pivo-tally
the position of said supporting bracket to deter
ing, a bimetal heat motor engaging said abut
mine the, position. of said. arm in valve member
ment and operable to. move said valve member
closed position, and means to hold said support
toward open position, a magnet surrounding said
ing bracket tightly in. its pivotally adjusted po
stem and cooperable with said abutment member
sition.
,
to resist initial opening movement of said. valve
5. An automatically operable valve, compris
member by said heat motor, a pivoted. arm ex
ing a valve casing, a valve member in said casing
tending into the path of movement of said’ abut»
and having a stem extending. out of said casing,
ment member and spaced from said abutment
thermostatic means operable to- move said valve
member in valve member closed position, and
member toward open position, said stem having
means acting on said arm to oppose yieldingly
an abutment, a supporting bracket pivotally
the opening movement of said valve member, said
mounted for adjustment on said. casing, an arm
heat motor acting upon temperature increase to
pivoted on said supporting bracket-and extending
overcome said acting means.
into the path of movement of said abutment, said
2. An automatically operable valve, comprising
a valve casing, a valve member'in said casing and 40 arm having a range of adjustment. to determine
the spacing of said arm from said abutment in
having a stem extending out of said- casing, said
valve member closed position, a springv acting
stem having an abutment external of said cas
through said arm to oppose opening movement
ing, thermostatic means operable to move said
of sad valve member, and an adjustment screw
valve member toward open position, means re
interconnecting said supporting bracket and said
sisting initial opening movement of said- valve
casing and operable to adjust the position, of'said
member by said thermostatic means, a pivoted
supporting. bracket thereby to determine the po~
arm extending into the path of movement of said
sitionof the adjustment range of said arm rela
abutment and spaced from said abutment. in
tive to said abutment.
valve member closed position, said arm having a
cam portion, an adjustable stop- member pivot 50 6. Anautomatically operable valve, comprising
Having thus described the invention, what is
claimed and is desired to be secured‘ by Letters
said cam portion, means to pivot said stop mem
ber to determine the spacing of said arm from
a valve casing, a valve‘ member’ in said casing
and having a stem extending out of said casing,
thermostatic means operable to move said valve
said abutment in valve member closed position,
member toward open position, said, stem, having
and means acting on said arm to oppose opening
movement of said valve’ member, said thermo
an abutment, a supporting bracket having, an
aperture, a shaft journaled on said casing and
ally supported by said casing and movable along
static means actingv upon temperature increase
secured in said bracket, aperture. to- support said
to overcome said acting means.
bracket, a spring member acting, longitudinally
3. An automatically operableval-ve, comprising
a valve casing, a valve member in said casing
and having a stem’ extending out. of- said casing,
said stem having an abutment. external- of. said
of and on said shaft to hold said bracket against
rotation, an arm pivoted‘ on said supporting
bracket and extending into the path oii move
ment of said. abutment, a spring, acting, through
casing, thermostatic means operable to move'said
said arm to oppose opening movement' of said
valve member toward open position, cooperative
magnet and armature members resisting initial
opening movement of said valve member by said
valve member, thecenterline of the bearing- for
.said shaft‘ and the centerline. of said bracket
thermostatic means, a pivoted arm extending
into the path of movement of. said abutment. and
spaced from said abutment in valve member
closed position, said arm having a cam portion,
.play of saidshaft in its bearing longitudinally
aperturebeing. at an angle to- each other so. that
of said stem is eliminated.
7. An automatically operable valve, comprising
an adjustable stop member movable along said
a valve casing, a valve member in said casing, and
having a stem extending out of said casing, a
cam portion to determine the spacing. of said
arm from said abutment in valve member closed
position, and a spring acting on said arm to
collar having upper. and’ lower ?anges and. se
cured on said stem external ofsaid casing, a flat
bimetal plate having an end slot receiving‘ said
oppose opening movement of said valve member,
collar and providing end plate portions posi
2,409,112
11
,
tioned between said ?anges, said end portions
being upwardly o?set to engage the underside of
said upper ?ange, one of said end portions hav
ing a downturned ?nger engageable with said
lower ?ange, an electric heater coil insulated from
and secured to said plate, said ?nger being nor
mally spaced from said lower ?ange, and means
supporting said plate for operation of said valve
member.
12
' continue opening movement of said valve mem
ber.
11. An automatically operable valve, compris
ing a valve body having a valve port, a bonnet
closing an open side of said body and having an
aperture therethrough alined with said port, a
valve member cooperable with said port and hav
ing a stem extending through said aperture, a
supporting member mounted on said bonnet and
10 having spaced pillars positioned parallel to and
on opposite sides of said stem and joined by a
cross member, said bonnet and said cross mem
ing and having a stem extending out of said
8. An automatically operable valve, compris
ing a valve casing, a valve member in said cas
and secured on said stem external of said casing,
ber having guide means for said stem, a housing
mounted on said bonnet and enclosing said sup
alined with the valve port, a valve member con
sitioned to act at an acute angle on said arm
member, said predetermined resistance being less
wire wound on an intermediate one of said sheets.
casing, a collar having upper and lower ?anges ,
a supporting bar positioned laterally of said col 15 porting member, horizontally spaced bearing
members extending into said housing member
lar and with its longitudinal axis transverse to
from a side wall thereof, a supporting bar hav
said stem, means supporting said bar for rocking
ing parallel upper and lower faces and having
movement about its longitudinal axis, a bimetal
end trunnions supported in said bearing mem
plate secured to said bar and extending into
operative relation to said collar to actuate said 20 bers, a ?at bimetal plate secured to said lower
face and extending toward said stem, a flat elec
~ valve member, said plate having an upward
tric resistance heating coil positioned against said
offset end portion engageable with the underside
plate, lugs on said plate holding said coil in said
of said upper ?ange to move said valve member
position, a ?at bimetal plate secured to said upper
toward open position, a downward extending
?nger projecting from said offset end portion be 25 face, an adjustable supporting member for the
free end of said second-named plate and project
‘ tween said ?anges and engageable with the upper
ing from said cross member, a collar of magnetic
side of said lower ?ange to move said valve mem
material secured on said stem between said pil
ber positively toward closed position, ‘an electric
lars and having spaced ?anges receiving there
heating element secured to said plate, and a bi
metal plate secured to said bar and operable to 30 between the free end of said ?rst-named plate, a
tubular support rigid with said bonnet and sur
rock said bar to compensate for variation in am
rounding said stem between said pillars, an an
bient temperature affecting said ?rst-named.
nular ?ange on said support, a tubular perma»
plate, said ?nger being spaced from said lower
nent magnet seating on and secured to said an~
?ange when said offset portion engages said upper
35 nular ?ange and surrounding said stem in co
?ange.
.
operative relation to said magnetic collar, heat
9. An automatically operable valve, comprising
conducting clamping means securing said ?rst
a valve body, a bonnet closing an open side of
named and said second-named plates to said sup
said body and having an aperture therethrough
porting bar and transmitting heat from one to
alined with the valve port, a valve member con
trolling ?ow through said port and having a stem 40 the other of‘ said plates, said ?rst-named plate
having between said collar ?anges a down-turned
extending through said aperture, a hollow cylin
?nger portion engageable with the lower ?ange
drical permanent magnet supported on said bon
to move said valve member toward closed posi
net and surrounding said stem, a collar of mag
tion, a supporting bracket adjustably and fric
netic material surrounding and secured on said
stem and spaced from said magnet when said 45 tionally held to one of said pillars, an arm piv
otally supported intermediate its ends to said
valve member is in closed position, electrically
bracket and having an abutment roller positioned
heated thermostatic means engageable with said
between said collar ?anges and spaced from said
collar to actuate said valve member, means re
lower ?ange in the closed position of said valve
sponsive to ambient temperature and operable to
change the position of said thermostatic means 50 member, said arm having a cam portion, an ad
justable pivoted stop member carried by said
to compensate for variation in ambient tempera
bracket and having a stop ?nger engaged by
ture. and means to conduct heat from said ther
said cam portion to limit movement of said arm
mostatic means to said responsive means to com
toward said lower ?ange, and a coil spring hav
pensate for variation in heat input to said ther
~55 ing one end secured to said arm and having its
mostatic means.
other end secured to said stop member thereby to
10. An automatically operable valve, compris
resist movement of said valve member by said
ing a valvebody, a bonnet closing an open side
?rst-named bimetal plate, said spring being po
of said body and having an aperture therethrough
trolling ?ow through said port and having a stem 60 so that the component of force of said spring
opposing movement of said arm decreases upon
extending through said aperture, a hollow cylin
opening movement of said valve member.
drical permanent magnet supported on said bon
12. A compensated electric heat motor com
net and surrounding said stem, a collar of mag
prising a supporting bar of heat insulating ma
netic material surrounding and secured on said
stem and spaced from said magnet when said 65 terial and having parallel faces, a plate of bi- '
metal seated at one edge portion on one of said
valve member is in closed position, electrically
faces, a second plate of bimetal seated at one
heated thermostatic means engageable with said
edge portion on the other of said faces and ex
collar to actuate said valve member, and mov
tending in parallel overlying relation to said ?rst
able means to exert a predetermined resistance
to opening movement of said valve member sub 70 named plate, a plurality of sheets of insulating
material, an electric resistance heating coil of
sequent to initial opening movement of said valve
said intermediate sheet having edge tabs receiv—
ing the turns of said coil such that substantially
75
all of said coil lies on one face of said intermedi~
is operable to overcome said movable means and
than the force which can be exerted by said ther
mostatic means so that said thermostatic means
2,409,112
13
114
ate sheet, means securing said sheets’ to one of
said plates, and a metal member having a low
and directly connecting said plates together to
said elementv and acting‘ upon such. engagement
solely to carry away heat from said element.
18. A compensated. electric heat motor com
prising a supporting bar of heat insulating ma
terial and having parallel. faces, a plate of bi
transmit heat from one to the other of said
metal seated at one edge portion onv one of said
plates.
faces, a, second plate of bimetal of less length
than said ?rst-named plate and seated at one
edge portion on the other of said faces and ex
heat conductivity extending through said plates
and said bar and securing said plates torsalid bar
13. An automatically operable valve, compris
ing a valve body, a valve member in said‘ body
and having a stem, a permanent magnet sur 10 tending in parallel overlying. spaced relation to
said ?rst-named plate, an electric heating means
rounding said stem, a collar of magnetic material
carried by said ?rst-named plate, and means se
secured on said stem and cooperable with said
curing said‘ plates to said bar and operable to
magnet to bias said valve member to closed po
transmit- heat from said ?rst-named plate to said
sition, a bimetal heat motor having an arm co
operable with said collar to actuate said valve to 15 second-named plate thereby to compensate: for
ward open position. against the force of said mag
the shorter length of said second-named plate.
19. An automatically operable valve compris
net, a normally ineffective thrust member hav
ing a casing having a valve port, a ‘valve mem
ing an end portion laterally movable into under
ber having a flow controlling end portion co~
lying engagement with said motor arm upon lift
ing of said arm above said thrust member there 20 operable with said port and having a stem, a
hollow cylindrical magnet alined with and spaced
by to hold said valve member in an open position,
from said port and having said stem. loosely ex
and means operable upon energization of said
tending therethrough, a collar of magnetic ma
heat motor to retract said- thrust member from
terial spaced from said end portion and sur
holding position so that said valve member can
move toward closed position.
25 rounding and rigidly secured on said stem and
spaced from said magnet in the closed position
14. An automatically operable valve, compris
ing a, valve casing, a, valve-member in- said casing,
‘of. said. valve member, and a resilient thermo
static blade having an end ‘portion engaging said
resilient thermostatic means operable on‘ move~
collar thereby to actuate said valve member;
ment when heated to move said valve member,
20. An automatically operable valve, compris~
controlled heating means for supplying heat to
ing a valve body, a bonnet closing an open side
said thermostatic means, cooperable magnet and
of said body and having an aperture there
armature members acting to hold said valve mem
through alined with the valve port, a valve mem
ber against the force of said thermostatic means
thereby to tension said thermostatic means so
ber controlling ?ow through said port andhaving
that said valve member will be moved quickly 35 a stem extending through said aperture, a hollow
cylindrical permanent magnet supported on said
upon the force of said thermostatic means overbonnet and surrounding said stem, a collar of
coming the magnetic force between said magnet
magnetic material surrounding and secured. on
and armature members, and means to abstract
said stem. and cooperating. with said magnet. to
from said thermostatic‘ means a portion of the
heat supplied by said heating means and rendered 40 yieldingly urge said valve member to closed po
sition, said collar being spaced from said magnet
effective upon movement of said thermostatic
when said valve member is in closed position, and
means.
'
electrically heated thermostaticv means engage~
15. An electric heat motor comprising arbi
able. with said collar and operable when su?i
metal operating element, electric heating means
for said element, and a sheet metal heat" con
ducting member positioned for direct surface en
gagement with and intermediate the ends of said
element intermediate the range of movement of
said element thereby to abstract‘ heat from said .
element prior to stoppage of movement of said
element.
16. An automatically operable valve, compris
ing a valve casing. a valve member in said cas
ing, a bimetal operating‘ element for actuating
said valve, electric heating means for said ele
ment, and a movable heat conducting member
spaced from and positioned in the path of travel
of said element, said conducting member being
engaged and moved by said element and acting
on engagement to carry away heat from said
element so that delay in return movement of
ciently heated to overcome the force of said mag
net tending to hold said valve member closed
thereby to open said valve member;
21. An automatically operable valve. compris
ing a valve member having a stern, an armature
member secured. on said stem and having an
annular ?ange, a magnet surrounding said stem
and cooperable with said ?ange to magnetically
hold said valve member in closed position, actu
ating means cooperable with said stem to over
come the force of said magnet thereby to open
said valve member, and means extending into
the path of movement of said ?ange and operable
to resist movement of said valve member by said
actuating meanspsaid extending means being
spaced from said ?ange when said valve member
is in closed position.
said valve member upon deenergization of said
22. An automatically operable valve, compris
heating means will be decreased.
17. An electric heat motor comprising a bi
metal operating element, a device normally en
ing a valve member having a stem, an abutment
on said stem, thermostatic means operable to
move said valve member from one limit of move
gaged with and movable by said element, electric
ment, 3, pivoted arm extending into the path of
movement of said abutment and ‘spaced from
heating means for said element, and a movable
said abutment- when said valve member is at said
heat conducting member spaced and separate
one limit, a movable spring acting on said arm
from said device throughout the range of travel
and exerting a force to interrupt movement of
of said element and spaced from and positioned in
said valve member by said thermostatic means,
the path of travel of said element for movement
and means constructed and arranged to support
with said element, said conducting member be
said spring in a position to exert a decreasing
ing positioned for direct engagement with the
component of force in opposition to movement
surface of said element and being engaged by
said element intermediate the range of travel of 75 of said valve member upon movement of said
2,409',1 12
15
arm by said thermostatic means, said thermo
static means being operable to overcome the op
posing component of force of said spring, thereby
to continue the movement of said valve member.
16
‘on said cross member supporting the free end
of said second-named blade, a collar of magnetic
material secured on said stem between said pillars
and having spaced ?anges receiving therebetween
the free end of said ?rst-named blade, a tubular
permanent magnet surrounding said stem in co
operative relation to said magnetic collar, and
heat conducting clamping means securing said
?rst-named and said second-named blades to said
supporting bar and transmitting heat from one to
said abutment and spaced from said abutment
the other of said blades.
in valve member closed position, said arm having
26. A fluid ?ow controlling valve, comprising
a cam portion, an adjustable stop member mov
a valve casing having a valve port and a bonnet
able along said cam portion to determine the
with an aperture therethrough alined with said
spacing of said arm from said abutment in valve
member closed position, and means acting on 15 port, a valve member cooperable with said port,
a stem extending from said valve member and
said arm to interrupt opening movement of said
projecting through said aperture, a tubular sup
valve member, said automatic means being oper
porting member external of said casing and sur
able to overcome said acting means and continue
rounding said stem and secured in said bonnet
the opening movement of said valve member.
aperture, a magnet rigidly secured on said sup
24. In an automatically operable valve, a valve
porting member, an armature rigidly secured to
member having a stem, actuating means cooper
said stem external of said casing and cooperable
able with said stem to move said valve member
with said magnet to hold said valve member
toward open position, said stem having an abut
yieldingly in closed position, said stem in the
ment, a supporting bracket, means pivotally
closed position of said valve member holding said
mounting said bracket, an arm pivoted on said
armature spaced from said magnet, and means
bracket and extending into the path of move»
to adjust said supporting member longitudinally
ment of said abutment, means cooperable with
of said stem to determine the spacing of said
said arm to oppose opening movement of said
magnet
from said armature in the closed position
valve member, means to hold said supporting
bracket in pivotally adjusted position, and means 30 of said valve member thereby to regulate the
holding force of said magnet.
to hold said bracket against play at its pivotal
27. An electric heat motor comprising a trun
mounting means.
cated triangular plate of bimetallic material, lat~
25. An automatically operable valve, compris
erally positioned clips facing the longer base of
ing a valve body having a valve port, a bonnet
said plate and punched-out of the area of said
closing an open side of said body and having an
plate adjacent its shorter base, an electric re
aperture therethrough alined with said port, a
sistance heating coil lying closely adjacent said
valve member cooperable with said port and
plate, said plate material having an integrally
having a stem extending through said aperture,
formed operating end portion, a sheet of insulat
a supporting member mounted on said bonnet
and having spaced pillars positioned parallel to 40 ing material interposed between said coil and said
plate, a sheet of insulating material supporting
and on opposite sides of said stem and joined by
23. An automatically operable valve, compris
ing a valve member having a stem, an abutment
on said stem, automatic means operable to move
said valve member toward open position, a piv
oted arm extending into the path of movement of
a cross member, said bonnet and said cross mem
ber having guide means for said stem, a housing
said coil, said insulating material sheets being
of truncated triangular form, said clips overly
ing‘and forming an end abutment for said sheets
enclosing said supporting member, a supporting
bar horizontally supported for rocking movement 45 at their shorter base and holding said sheets and
coil to said plate, a mounting member, and means
within said housing and having parallel upper
holding said sheets in position beneath said
and lower faces, a bimetal blade secured to said
clips and holding said bimetal material to said
lower face and extending toward said stem, an
mounting
member.
electric resistance heating coil for said blade, a
EARNEST J. DILIMAN.
bimetal blade secured to said upper face, means 50
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