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Патент USA US3071349

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Jan; 1, 1963
P. NIXON
I
3,071,340
MAGNETIC SWITCH VALVE
Filed June 15, 1960
lag-A //
F/6‘.6
INVENTOR
PHILLIP NIXON
ATTORNEY
United States Patent 0 ce
1
.
3,@7i,348
Patented Jan. 1, 1963
1
2
3,071,340
neck 19 is integrally formed with the housing 10 and
projects at right angles from one edge thereof, the outer
MAGNETHQ SWETCH VALVE
Phillip Nixon, 608 Glendale llrive, Glenview, 11].
Filed June 15, 1960, Ser. No. 36,319
5 Claims. (Cl. 251-65)
This invention relates to a valve having general utility
in ?uid conduit systems and consists more particularly in
new and useful improvements in a gate-type magnetic
switch valve especially adapted for use in connection with
appliances such as washing machines, where ease of op
eration in quickly opening or closing the line is of im
end of said neck being reduced and externally threaded
as at 20 to receive a suitable nut 21 for securing the
valve assembly to a support 22 which, for example, may
be the casing of a washing machine or the like.
The neck 19 is provided with a central longitudinal
bore 23 which is restricted substantially midway of its
length to form an annular shoulder 24, and from the
10 shoulder 24 the bore ?ares as at 25 and terminates in
communication with the valve chamber 11 as best seen
in FIG. 5. The outer end of the bore beyond the shoul
portance. .
der 24, is enlarged to form a well 26 internally threaded
An object of the invention is to provide a switch valve
to receive an adaptor 27 to be later described.
of this nature including magnetic means for automatically 15
A valve gate 28 in the form of a relatively ?at circu~
maintaining the valve gate in either fully opened or fully
closed positon upon the tripping of a control lever.
Another object of the invention is to provide a switch
valve wherein the gate is mounted on one end of a freely
pivoted control lever and including a double acting mag
net adapted to complete the opening or closing of the
valve upon a selected initial movement of the control
lever and to maintain said valve in the selected position.
A further object of the invention is to provide a switch
valve of this type wherein the magnetic means is mounted
externally of the valve housing and coacts with the con
lar disc of greater diameter than the aligned ports 16
and 18, is disposed edgewise in the chamber 11 and
threadedly connected to one end of a control lever 29
which extends through the bore 23 and projects from
the outer extremity thereof, a handle or knob 31} being
carried at the outer end of the control lever.
The con
trol lever 29 is pivotally mounted with respect to the
neck 19, by means of a collar 31 which ?ts in the Well
The control lever
extends through a central opening in the collar 31 which
has inset therein an O-ring 32 arranged to tightly em
trol lever of magnetic metal in completing the valve
brace the control lever 29 and de?ning the axis of the
actuation and in maintaining a selected position of the
pivotal movement of the latter. The adaptor 27 upon
valve.
being screwed into the threaded well 26, ?rmly engages
Still another object of the invention is to provide a 30 the collar 31 and secures it against the shoulder 24, said
magnetically controlled switch valve which is simple in
construction and positive in operation and one which is
extremely easy to manipulate.
With the above and other objects in view which will
appear as the description proceeds, the invention con
sists in the novel features herein set forth, illustrated
in the accompanying drawings and more particularly
pointed out in the appended claims.
Referring to the drawings in which numerals of like
character designate similar parts throughout the several
26 and rests upon the shoulder 24.
adaptor being provided internally with an outwardly ?ar
ing recess 33 which, together with the oppositely ?ar»
ing portion 25 of the bore 23, accommodates the pivotal
movement of the control lever about the axis formed
- by the O-ring 32. Thus, by rocking the control lever 29,
the valve gate 28 is caused to reciprocate in the chamber
11 into and out of operative position between the aligned
ports 16 and 18.
'
>
As seen in FIG. 5, the pro?le of the valve chamber
40 11 is slightly arcuate so as to de?ne an arcuate path
sembly installed in a conduit and mounted in the housing
for the valve gate 28 in its movement to and from open
and closed positons with respect to the aligned ports 16
and 18. Thus, the pivotal movement of the control lever
of the appliance;
29 about its axis 32 causes the valve gate 28 to move in
views:
'
FIG. 1 is an elevational view showing the valve as
-
FIG. 2 is a similar view taken at right angles to FIG. 1;
a predetermined and con?ned path with no possibility
FIG. 3 is a side elevational view showing the valve
of becoming out of alignment with the respective ports
housing with its closure plate removed and reversed;
16—18.
FIG. 4 is a top plan view of the valve;
A permanent magnet 34 of substantially U-shape ex
FIG. 5 is an enlarged view partially in section, taken
ternally embraces one side of the neck 19 with its op
on line 5—5 of FIG. 4;
50 posite vpoles 34a and 34b projecting into the bore 23 of
FIG. 6 is a longitudinal sectional view through the
the neck 19 through radial openings 35 in the wall of
valve housing; and
the neck. The opposed, transversely spaced extremities
FIG. 7 is a similar view showing a modi?ed form of
of the poles 34a and 34b preferably diverge on angular
sealing ring arrangement.
lines parallel with the respective adjacent walls of the
In the drawings, 18 represents the valve body orhous 55 ?aring portion 25 of the bore 23, so that when the inter
ing formed of non-magnetic material such as brass. The
housing is relatively shallow and substantially elliptical
vening portion of the control lever 29 engages either one
of the poles 34a or 34b, the lever will ?ushly abut the
respective poles of the magnet. Also, if desired, the
in plan, internally recessed from one side to provide a
lever engaging edges of the magnet poles may be grooved
valve chamber 11. A closure plate 12 also of non-mag
netic material, is removably attached to one side of the 60 as at 36 to accommodate the periphery of the lever 29.
In the form of the invention shown in FIG. 6, each of
housing 18 by means of screws .13 which engage com
the ports 16 and 18 is bounded by an annular groove 37
plementary threaded openings 14 in the edge of the hous
which receives an individual O-ring 38 of any suitable
ing wall, thus closing the chamber 11.
sealing material. The O-rings are of su?icient thickness
An internally threaded inlet connection 15 is prefer
ably integrally cast with the housing 10 at one side there 65 to engage and seal the respective side faces of the valve.
gate 28 when the latter is interposed therebetween in
of and opens to the chamber 11 in an inlet port 16. On
closed position.
the opposite side of the housing, the closure plate 12 is
In installations required to operate under high pressure
provided with a similar outlet connection 17 communi
conditions, the modi?ed sealing arrangement shown in
cating with the chamber 11 through discharge port 18, 70 FIG. 7 may be employed. Here it will be seen that the
said connections and ports being coaxially aligned with
discharge port 18 is provided with two concentric 0
one another on opposite sides of the housing 10. A
rings 38a and 38b arranged in a suitably enlarged an
3,071,340
A
n
:35
nual groove 37a. Preferably, one of these rings 38a
is composed of soft ?exible material adapted to provide
a seal for a low pressure range of from 1 to 200 p.s.i. and
the other ring 38b is composed of a harder and more
resilient material such as Te?on, to provide a seal in the
200—l0,000 p.s.i. range. The pressure is exerted on
the back of the valve gate 28 through inlet port 16 and
when high pressures are encountered, the soft ring 38a
a valve seat bounding at least one of said openings, a
valve gate slidably mounted in said chamber for move
ment to and from engagement with said seat, a rigid con
trol lever of magnetic material pivotally mounted on
said body externally of said chamber, with one end ex
tending into said chamber and connected to said gate, its
opposite end forming a handle projecting from said body,
and magnetic means disposed on opposite sides of said
control lever, respectively biasing the latter in opposite
is depressed and the gate is forced into contact with the
directions, whereby upon rocking said lever in either di
hard ring 38b. In other Words, with this double ring 10 rection to selectively position said gate, the latter is
arrangement, the soft ring is su?icient to effect a seal
maintained in the selected position by magnetic force.
under pressure of from 1-200 p.s.i., but when higher
3. A self-contained sliding gate valve assembly com
pressures are involved, this soft ring is ?rst compressed
prising a body of non-magnetic material, a closed valve
and thereafter the sealing action is taken over by the hard
chamber in said body having fluid inlet and outlet openings,
ring.
a valve seat bounding at least one of said openings, a
As shown in FIG. 1, the valve housing is installed in
valve gate slidably mounted in said chamber for move
an appliance with liquid conduits 39 and 40 screwed into
ment to and from engagement with said seat, a hollow
the respective connections 15 and 17 to control the flow
neck formed on said body and opening into said cham
of liquid through said conduits.
ber at one end, a rigid control lever of magnetic material
It will be apparent that when the control lever 29
pivotally mounted intermediate its ends within said neck,
undergoes a slight initial movement in either direction
about its pivot point 32, the magnetic force of the corre
sponding pole of the magnet 34 will complete that move
ment and maintain the valve gate 28 either open or closed
until a reverse movement of the control lever 29 is ini
tiated. Thus, the invention provides a valve which is
extremely easy to operate with ?nger-tip control and
one which is positive in its shifting .to fully opened or
fully closed position.
one end of said lever extending into said chamber and
connected to said gate, its opposite end forming a handle
projecting from said neck, and ‘magnetic means mounted
on said neck and having opposite poles projecting through
the wall of said neck and terminating in transversely
spaced relation on opposite sides of said control lever,
whereby upon rocking said lever in either direction to
selectively position said gate, the latter is maintained in
position by magnetic force.
From the foregoing, it is believed that the invention 30 the4.selected
A gate valve as claimed in claim 3, wherein the op
may be readily understood by those skilled in the art
posed extremities of respective poles are inclined to com
without further description, it being borne in mind that
plement the angular disposition of the adjacent portion of
numerous changes may be made in the details disclosed
said lever upon pivotal movement of the latter to its op
without departing from the spirit of the invention as set
35 posite extreme positions.
forth in the following claims.
5. A gate valve as claimed in claim 4, wherein the in
I claim:
clined
extremities of said poles are respectively grooved
1. A self-contained sliding gate valve assembly com
to accommodate the periphery of the adjacent portion of
prising a body of non-magnetic material, a closed valve
said control lever.
chamber in said body having ?uid inlet and outlet openings,
a valve seat bounding at least one of said openings, a 40
References Cited in the tile of this patent
valve gate slidably mounted in said chamber for move
UNITED STATES PATENTS
ment to and from engagement with said seat, .a rigid con
trol lever of magnetic material pivotally mounted on ‘said
165,493
Morse _______________ __ July 13, 1875
body externally of said chamber with .one end extend
241,568
Spratt _______________ __ May 17, 1881
45
ing into said chamber and connected to said gate, its .op
1,014,070
Laxton ______________ __ Jan. 9, 1912
posite end forming a handle projecting from said body,
1,606,355
Fisher _______________ __ Nov. 9, 1926
and magnetic means ?xed to said body, biasing said lever
1,617,503
Seymour ____________ __ Feb. 15, 1927
in opposite directions, whereby upon rocking said lever
latter is maintained in the selected position .by magnetic 50
2,558,471
2,575,086
2,781,787
Whitlock ____________ __ June 26, 1951
Atchison ____________ __ Nov. 13, 1951
Johnson ______________ __ Feb. 19, 1957
force.
2. A self-contained sliding gate valve assembly .com
prising a body of non-magnetic material, a closed valve
1,128,725
France ______________ __ Aug. 27, 1956
in either direction to selectively position said gate, the
chamber in saidbody having ?uid inlet and outlet openings,
FOREIGN PATENTS
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