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Патент USA US2112220

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March 22; 1938.
P, s_ RUSSEL
2,112,220
GONTROL DEVICE
Filed Oqt. 22, 1936
_
I
-
11v VENTOR
BY W
f
KM
M
.4 TTORNE y
Patented Mar. 22, 1938
,
YUNlTED STATES
_
2,112,220
'
PATENT OFFICE
2.11am
oon'rnor. DEVICE
Philip s. Russel, Detroit, mm, assignor to De
troit Lubricator Company, Detroit, Mich, a
corporation of Michigan
Application October 22, 1936, Serial No. ~1116,9911
11 Claims. (Cl. 137-104)
erence there is shown a control device of the type
My invention relates generally to control de
adapted to control ?ow of liquid fuel, such as oil,
vices and more particularly to gravity feed con
to a burner (not shown), and this device includes
trol devices.
‘
One of the objects of my invention is to provide ‘ a casing I, the top of which may be closed by a‘
6 a new and improved liquid level- control device of
a character which will maintain a more nearly
constant liquid level in a reservoir.
Another object of my invention is to provide for
operatively connecting an actuated member and
an actuator in a novel manner such that there
.will be no lost motion or slack in the connection
removable closure member or cover 2. The cas
ing I has a-chamber or reservoir 3, an inlet 4 and
an outlet 5__for liquid. The inlet 4 and outlet 5
may be located in the bottom wall of casing l, as
shown, and preferably the casing bottom wall, , ,'
within chamber 3, has-an integral, upwardly di- 10
rected, tubular extended portion‘ 6 aligning with
the inlet 4. Mounted on the upper end of the
therebetween.
Another object of my invention is to operatively, tubular portion 6 and preferably screw threaded
connect a ?oat and a valve .actuated thereby in a ‘»- thereinto there is a removable, open ended. tubu
15 manner such that lost motion between the ?oat lar ?tting or valve seat member ‘I that extends 15
vertically upward into chamber 3. The ?tting ‘I '
' and valve will be eliminated and slack therebe
tween. which would ordinarily occur due to wear is provided, intermediate its ends, with an inter
nal transverse wall 8 having an aperture or bore
of the parts, will be prevented.
Another object of my invention is to provide a
novel connecting means for operatively connect
ing a ?oat and valve actuated thereby such that
there will not be any'lost movement therebetween
and yet which will permit the valve to be sepa
rately and readily removed from the device for
25 cleaning the valve and its cooperative seat.
- Another object of my invention is to provide for
a liquid level control device, an e?iclent yet
strongly constructed, durable hollow ?oat that
will not be likely to leak.
30
'
Another object of my invention is to provide
for a liquid level control device, an e?icient ?oat
ater speci?c gravity than desired so that
of
th ?oat can be strongly constructed and to pro
9 therethrough providing a'port and upwardly
facing seat ill for cooperation with the conical 20
face ll of a reciprocable valve member I2. The
valve I2 is preferably of the so-called needle type
and has a stem l3 which projects upwardly above
the upper end of the ?tting ‘I and preferably a
cap member I4 is ?tted onto the upper end of the
?tting'and has an aperture therethrough for slid
ably receiving and guiding the valve l2.
Within casing I there is a supporting member
ii that is preferably of general U-shape having a .
base I6 from which a pair of spaced‘, upstanding. .
sides I‘! extend, and this supporting member l5
may be mounted on the tubular portion 6 and
be rigidly secured to the casing I by the ?tting ‘l.
vide in a simple and inexpensive manner ‘for com- . The base It of the supporting member I5 may be
35 pensating for the excess weight of the ?oat.
The invention consists in the improved con
struction and combination of parts, to be more
fully described hereinafter and the novelty of’
which will be particularly pointed out and dis
40
tinctly claimed.
I
'
'
In the accompanying drawing, to be taken as a
provided with an aperture therethrough for re-‘,
ceiving a lower end portion of the ?tting ‘I which
.may be tightened down to clamp the base be
tween the upper end of ‘the tubular portion 6 and
a downwardly facing external shoulder ll! of the
?tting 1. Preferably the base I6 is interposed 40
between washers or gaskets I9 to insure a fluid
part of this speci?cation, I have fully and clearly 'tight connection. Adjacent their upper ends the _
sides ll of the U-shaped support I5 are provided
illustrated my invention, in which drawing-é
_ Figure 1 is a view shown partly in cross section
45 and partly in elevation of a gravity feed control
device embodying my invention;
Fig. 2 is an enlarged fragmentary view shown
‘in side elevation of- the operating parts of the
with aligning apertures to receive a shaft or pivot
pin 20, and pivotally supported intermediate its
ends'on the pin 20 there is a lever member ‘2|.
Rigidiy secured to one end of the lever 2| there is
a hollow weight member or ?oat 22 that is dis
posed in the reservoir or chamber 3 for actuating
the
valve member ii. The weight or ?oat 22 is ‘50
Fig.
3
is
a
top
plan
view
in
elevation
taken
in
50
the direction of the‘ arrows 3-3 of Fig. 1, show‘-_ . strongly constructed and as a result its speci?c
gravity is in excess of that which would float at a
ing certain parts of my device, and
r
Fig. 4 is a view shown in elevation of one of level to maintain the desired, substantially con
the parts of my device shown removed therefrom. stant level in chamber 3. Rigldly secured to the
other end of lever 2! on the opposite side of the 65
55 Referring to the drawing by characters of ref
device of Fig. .1;
v
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2
2,112,220
pivot pin 20 from the ?oat 22 there is a second
The operation of my device is as follows: when
weight member 24 that preferably depends from
liquid in reservoir 3 increases above the desired
level the ?oat 22 will rise and pivot lever 2| to
the underside of the lever 2|, and this second
weight member 24 counterbalances the ?oat 22 or move the valve | 2 downward toward its seat to
compensates for the excess weight .of ?oat 22 reduce the quantity of liquid entering reservoir Cl
whereby the valve member l2 will be actuated to , 3. Conversely, when the level of the liquid de
maintain the desired, substantially constant level creases below the desired level the ?oat 22 will
in chamber 3., By reason of the counterbalancing descend and will pivot lever 2| in the opposite
weight member 24 the hollow ?oat 22 may be
10 made of a metal of such thickness that the ?oat
direction, lifting the valve away from its seat to
increase ?ow of liquid into reservoir 3.
.10
From the foregoing description it will be 'seen
will be strong and durable. If desired, the ?oat
22 may consist of a solid piece of metal, such as - that I have provided a new and improved ?oat
which may be excessively heavy so that it may
aluminum, if a su?iciently heavy counterbalanc
ing weight is provided to compensate for the ex
be strong and durable, and that I have provided
15 cess weight so that the ?oat will ?oat at the simple and inexpensive means for compensating
for the excess weight of the ?oat. It will also
proper level.
As shown in Fig. 3, the lever 2| is preferably of be seen that I have provided a novel connecting
plate-like‘ form and is preferably provided with memberv for operatively connecting the ?oat and
a substantially rectangular shaped opening or valve such that there will not be any lost motion
20 aperture 2|“ therethrough for freely receiving therebetween. Further, the novel connecting
means is of a character such that it will auto
the valve stem l3. In order to operatively con
matically take up slack due to wear of the parts. '
nect the ?oat 22 and valve l2 in a manner such
that there will not be any lost motion or slack
therebetween and so that the valve may be
In addition, my connecting means, although hold
readily removable from the casing |, I provide
that there will be' no lost motion or slack there- '
a resilient or spring connecting or holding mem
ber 25 that is preferably carried by lever 2| and _
between, permits of ‘easy and ready removal of
the valve. 'By eliminating slack between the
valve and ?oat it will be appreciated that the
holds the valve l2 to the lever. The connecting
member 25 may be formed of spring sheet metal
30 of rectangular shape, andv may be secured at one
of its ends to the lever 2| between the under
side of the lever and the weight member 24.
The connecting member 25 and lever 2| may be
provided with aligning apertures for receiving a
35 reduced extended portion 26 of the weight mem
ber 24, the extended portion 26 being adapted to
be peened over as a rivet to rigidly secure the
weight, connecting member and lever together.
The connecting member 25 preferably lies ?at
40 against the underside of lever 2| and has a
downwardly disposed, o?‘set portion 21 at its
other or free end, through which is provided an
elongated aperture or slot 28 for receiving the
valve member |2. The valve |2 preferably has a
. transversely extending abutment member, pref
erably a pin 29, opposite end portions of which
are engaged by the connecting member -25 which
is under tension urging the pin upward into en
gagement with the underside of lever 2|. Thus
the connecting member 25, acting through the
pin 29, urges the ‘valve ‘l2 upward and holds the
ing the ?oat and valve together in a manner such
valve will be moved upon very slight movement
of the ?oat, which will result in obtaining a more 30
constant'rate of ?ow from outlet 5.
What I claim and desire to secure by Letters -
Patent of the United States is:
1. In a control device, a casing having a valve
port, a lever member having an aperture there
LA
through alined with said port, a valve having
a stem and reciprocal toward and from said
port, said stem projecting through said aper
ture to provide a hand grip portion for manual
rotation of said stem, and means operable upon
rotation of said stem to hold said stemand said
lever member in engagement, said valve being
removable from said port and said lever mem
her through said aperture.
2. In a control device, a casing having a valve 45
port, a lever member extending across said port
and having an aperture therethrough alined
with said port, a valve having a stem, the valve
end portion of said stem being insertable through
said aperture to position said valve in coopera- i,
tive relation to said port, said stem having inter
mediate its ends a pair of lateral oppositely di
valve to the lever 2| so that there will be no lost
motion or slack therebetween. By providing the rected pivot ‘members engageable with said lever
tensioned member 25 with the offset portion 21 it member, and spring means engaging and holding
said pivot members in engagement with said
55 will be seen that the force exerted by the mem
ber 25 will be directed more nearly vertical to lever member.
3. In a control device, a casing having a valve
reduce side thrust on valve“. The abutment
pin 29 provides a convex-surface for abutment ‘port, a lever member extending across said port
with the lever 2| and with the tension connecting and having an aperture therethrough alined with
.60 member 25, which reduces friction between the said port, a valve having a'stem; the. valve end 60
pin, lever and connecting member.
The herein described connection for the ?oat
and valve permits the valve to be very easily and
readily removed in the event that it is desired to
clean the valve and its seat of foreign matter,
portion of said stem being insertable through , -
said aperture to position said valve in cooperative
relation to said port, said stem having inter
mediate its ends a pair of lateral oppositely di
rected pivot members engageable with said lever
member, and a leaf'_spring fixed to said lever
or if for any reason it is desired to remove the
valve. Before the valve"is removed the chamber - member and having an offset portion, said o?set
3 will, of course, be enfptied oi ?uid and the
valve wi1l~be held in its “up” position by the
?oat. By pressing downward on the valve .the
I free end of the spring connecting member 25
75
portion engaging and holding said pivot members
in engagement with said lever member.
4; In a control device‘, a casing having a valve 70
port, a lever member extending across said port, a -
may be ?exed downward and the valve may be
rotated until the pin 29 extends longitudinally
of the slot 2|“ in lever 2|, after which ‘the valve
member ?xed to said lever member, said members
being ‘in overlying relation and each having an
aperture therethrough alined with said port, a
is free to be lifted out of casing I.
valve cooperable with said port and having a 7‘
'
3
7 2,112,220
stem extending through said apertures, said stem
having a lateral portion positioned between said
members, each of said members having its aper
ture ‘shaped for engagement of said lateral por
tion with the marginal edge portion of its aper
5
having intermediate its ends a laterally project
ing portion passed by said aperture so that said
valve portion and said projecting portion can be
inserted through said aperture to position said
projecting portion on the port side of said lever
member, saidstem being tumable on its longi
being also shaped for passage of said portion »tudinal axis to position said projecting portion
therethrough, so that upon turning of said stem in abutting relation to‘ said lever member, and
ture, the aperture-more remote from said port
on its longitudinal axis the valve canbe ‘with
drawn through said apertures and from said
lever member.
.
.
said projecting portion inengagement with said
10
lever member.
'
5. In a control device, a casing having a valve
4 port, a lever member extending across said port,
a member ?xed to said lever member, said mem
15 bers being in overlying relation and each having
an aperture. therethrough alined with said port,
a valve'cooperable with said port and having a
stem extending through said apertures, said stem
having a lateral portion positioned between-said
20 members, each of said members having its aper
turev shaped for engagement of said lateral por
tion with the marginal edge portion or its aper
ture, the aperture more remote 'from said port
being also shaped for passage of said portion
25 therethrough, so that upon turning of said stem
9. In a control device,‘ a casing having a valve
port, a lever member extending across saidport -
and having an aperture therethrough alined with
said port, a leaf spring member secured to the 15
port side of said ‘lever member and extending
across said aperture, said spring member having
an aperture alined with said valve port, a valve
member having a stem extending through said
apertures and having a lateral portion positioned 20
between said spring member and saidlever mem
drawn through said apertures and from said
ber, said lever member aperture being so shaped
that upon insertion of .said stem through said
apertures said projecting portion will pass
through said lever member aperture and engage 25
said spring member, .said spring member being
movable away from said lever member by said
lever member; and means holding said stem
against rotation during operation of said valve.
stemso that said stem can be rotated to position
port, a lever member extending across said port,
and said lever member.
on its longitudinal axis the valve can be with
30
means operable upon turning of said stem to hold
projecting portion upon-manual operation of said
6. In a control device, a casing having akvalve - said lateral» portion between said spring‘ member 30
a member ?xed to said lever member, said mem
bers being in overlying relation and each having.
an aperture therethrough alined with said port, a
valve cooperable with said port and having a stem
extending through said apertures, said stem hav
ing a lateral _ portion positioned ‘between said
members, each of said members having its aper
ture shaped for engagement of said lateral por
40 tion with the marginal edge portion of its aper
ture, the aperture more remote from said port
being also shaped for passage of said portion
therethrough, so that upon turning of said stem
on its longitudinal axis the valve can be with
'
. ‘
10. In a control device, a casing having a valve
port, a lever .member extending across said port
and having an aperture therethrough alined with
said port, a leaf spring member secured to the
.port side of said lever member and extending
across said aperture, said'spring member having
an aperture alined with said valve port, a valve
member having a stem extending through said
apertures and having a lateral projecting portion
positioned between said spring member and said
lever member, said lever member aperture being
so‘ shaped ‘that~ upon insertion of said stem
35
through said apertures said projecting portion
will pass through said lever member aperture and 46
engage said- spring member, said spring member
' setportion engageable with and holding said ‘being movable away from said lever member by
45
drawn through said apertures andfrom said lever
' member, and one of said members having an off
lateral portion against rotation during operation " said projecting portion upon manual operation
of said valve.
of said stem so that said stem can be rotated to
.
'7, In a control device, a casing having a valve
position said projecting portion between said
spring member and said lever member, said spring
port,'a lever member extending across said port. a
leaf spring member fixed to said lever member,
said members being in overlying relation and each
memberhaving an onset portion cooperable with
port, a valve cooperable with said port and-having
lever member during operation 01' the valve.
said projecting portion to maintain said project- '
having an aperture therethrough alined with said ‘ ing portion between said spring member and said
a stem extending through said apertures, said
stem having a lateral portion positioned between
"said members, each of said members having its
aperture shaped for engagement of said lateral
.60 portion with the marginal edge portion of ‘its
‘aperture, the aperture more ‘remote irom~said
port being also shaped for passage of said portion
therethrough, said leaf spring member having anv
o?set portion engageable with and holding said
_ 11. In a liquid level control device, a casing
having avalve port, a lever member in‘ said casing
. having a fulcrum support, a ?oat member carried
' by one end of said lever member, a valve member
cooperable with said port and having'a stem, lat
erally projec
) means on said stem engageable
with the port si 'e' of said lever member, said lever
‘ member having an aperture therethrough shaped
for-passage of said projecting means so that upon
lateral portion against rotation during operation
of said valve, said stem being manually-operable
rotation of said stem the valve may be withdrawn 65
to move said spring member away from said lever
weight member secured to the other end or said
lever ‘member and acting by gravity in opposition
to the weight of said ?oat member, and a spring
member clamped to said lever member by said
weight member and engaging said projecting
member so that the stem can be turned-on itslon
gitudinal axis tor withdrawal of said valve
through said apertures-
Q
’ .
8. In a control device, a'casing having a, valve
; port, alever member extending across said port
and having an aperture therethrough alined with
_ said port, a valve stem having a valve portion and
from said lever member through said aperture, a
means to hold said valve member and said lever
member in operative
ent.
m S. RUSBEL.
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