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Патент USA US2403392

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July 2, 1946.
s. I NEWBERY
.
2,403,392
ELECTRIC MAsTER SWITCH OR ELECTRICAL TIMING DEVICE FOR CONTROLLING
THE OPERATIONS OF LAUNDRY OR OTHER PLANT OR APPARATUS
Filed May 18, 1945
,
2 Sheets-Sheet 1
July 2, 1946.
s_ NEWBERY
2,403,392
ELECTRIC MASTER SWITCH OR ELECTRICAL TIMING DEVICE FOR CONTROLLING
THE OPERATIONS OF LAUNDRY OR OTHER PLANT OR APPARATUS
Filed May 18, 1945
2 Sheets-Sheet 2
QZzvv 131776012»
. ?ezsrbery
2,403,392
I Patented July 2, 1946
UNITED STATES PATENT orrlcr."
ELECTRIC MASTER SWITCH OR ELECTRICAL
TIMING DEVICE FOR CONTROLLING THE
OPERATIONS OF LAUNDRY OR OTHER
PLANTS OR APPARATUS
Stanley Newbery, London, England
Application May 18, 1945, Serial No. 594,453
In Great Britain July 2, 1943
6 Claims.
(C1. 2004-35)
2
of a master switch or device which is simple, in
expensive to manufacture and reliable in use.
In my British patent speci?cation No. 424,331
1
the travelling contact control member, spring
contacts being provided on the supporting frame
for engagement by the operational wires when
the frame element is in its operative position.
This invention relates to electric master
switches or electric timing devices for control
ling the operations of laundry or other plant or
apparatus and has for its object the provision
$1
The invention will be further described by way
of example in reference to a master switch suit
able for a laundry washing machine.v
In the accompanying drawingsa
is described a master switch having a rotary con
Figure l is a front view of a master switch
tact control arm adapted in timed sequence to
make contact with a series of jack sockets into 10 according to the invention as adapted for the
which selected jacks are plugged according to
various operations which it is desired to bring un
der automatic control in any predetermined time
control of a laundry washing machine,
Figure 2 is a cross-sectional view, and
Figure 3 is a View of a detail.
A rectangular frame I is provided one side of
which is located parallel with the rectilinear
The use of jacks with attached cords provides
path of movement of a contact control device 2.
a selective arrangement affording great ?exibil
The frame is provided with an insulated insert
ity of choice and variety of combinations but
3 and is hinged or detachably supported by an
from the point of View of appearance and legi
chor pins 4 in brackets 5 so that it may be
bility, that is to say, the tracing of circuits which
have been made, the crossing jack cords may be 20 brought parallel and spaced apart from the path
of movement of the contact control device 2.
somewhat confusing and detract from the ca
Two sets of wires are mounted in the insulated
pacity quickly to appreciate or read any partic
insert 3, one set comprising parallel conducting
ular layout.
Wires 6 spaced at predetermined time intervals
An aim of the present invention is to provide
a device a?ording an alternative to or improve 25 with respect to the travel of the control device
2. For example, the wires 6 may be spaced apart
ment upon the switching means described in my
to correspond with minute time intervals. The
above speci?cation, including the provision of
wires 6 are stretched across the frame to lie at
circuit selecting means whereby the preselection
right angles to the path of movement of the con
and tracing of a layout may be facilitated.
The invention consists in a master switch or' 30 tact control device.
Each wire is formed after the manner of a
electrical control device comprising a contact
cycle spoke having a head 6a and a tightening
control member displaceable at a predetermined
nipple 6b, the heads and nipple being located in
time rate, a set of parallel wires or rods spaced
recesses 1a, 1b in the insulating insert 3.
apart in one plane at predetermined time inter
Another set of wires 8 spaced at appropriate
vals with respect to the travel of the control 35
intervals is mounted on the insulating insert 3
member and adapted successively to be ener
and is provided with a similar head Ba and ten
gised by the control member, a second set of 0p
sioning nipples 81). Each of the wires 8 of this
erational wires or rods connected (or connect
second set is connected or adapted to be con
able) in different operating circuits of the plant
or apparatus and laid in a parallel plane trans 40 nected in a particular circuit of the laundry
washing machine corresponding with the oper
versely or gridwise to the ?rst set so as to afford
ation which the wire is concerned in controlling.
separated crossing points and a set of contact
The second set of wires 8 (which may be called
pieces for forming conducting bridges between
relationship or sequence.
the operational wires) is arranged transversely
wires of one set and wires of the other set at se
lectively predetermined crossing points ready to 45 at right-angles to the ?rst set 6 so that the plane
receive current when the control member in suc
cession contacts with the time wires of the se
lected crossing points.
of each wire of one set, transverse to the plane of
the frame, intersects or crosses those of the other
set.
‘
The contact control device 2 of which three are
ly to one another in a frame element and the 50 providedare mounted upon an endless motor
driven chain or band 9 one lap I0 of whichlies
contact pieces comprise jacks adapted to hook on
parallel with the side of the frame I and at right
to the wires of one set and to engage the wires of
angles to the time wires 6 so that the contact
the other set by spring contact elements.
The sets of wires are preferably ?xed relative
devices traverse these wires and thence around
The frame element may be detachably mount
ed with respect to a supporting frame carrying 55 a terminal sprocket Wheel H. The chain 9 is
3
2,403,392
4
driven by a sprocket wheel 12 from a motor l3
sorted between the worm wheel 35 driven by the
worm 14 of the motor drive to the chain sprocket
l2.
The contact control device 2 is provided with
indicating ?ngers 35 and in order to enable the
position of the control device to be observed a
space may be provided between the operational
wires 8 adjacent the path of the control device.
I claim:
by a worm M or other suitable reduction gear.
Each contact control device is provided with a
wiper l5 which engages the wires 6 in succession
and a pick up contact I6 which engages a bus bar
l1 ?xed in position to the rear of the set of time
wires 6. ‘
The connection of any particular time wire 5 to
any particular operational wire 8 is effected by
a bridging contact piece or jack 18 which is 10
1. A master switch or electrical control device
adapted to engage the selected wires at the cross
for controlling the operations of laundry or other
ing point and form a path for the current from
plant, comprising a contact control member dis
the selected time wire to the selected operational
placeable at a predetermined time rate, a set
wire.
of parallel members spaced apart in one plane at
Each jack comprises a hook 19 adapted to en
predetermined time intervals with respect to the
gage the selected time wire 6 and a spring loaded
travel of the contact control member and adapted
contact 20 adapted to engage the selected oper
successively
to be energised by the said control
ational wire 3 and hold the jack in position.
member, a second set of operational members con
Located beneath the bus bar is an insulated
nectable in different operating circuits of the plant
strip or panel 2| supported upon a ?xed frame or
plate 22. The strip 2| carries a series of spring
contacts 23 adapted to engage the operational
wires 8 to energise such wires, the contacts 23
20 or apparatus and arranged in a parallel plane
transversely to the ?rst set so as to afford sepa
rated crossing points, and a set of contact pieces
for forming conducting bridging elements between
being coupled to appropriate circuits according
members of one set and members of the other set
to the operation that is to ‘be controlled by these 25 at selectively predetermined crossing points ready
wires 8. For connecting the control device with
to receive current when the control member in
a suitable electric current supply, the bus bar
I1 is provided with a terminal contact 21.
As applied to the control of a laundry washing
machine the operational wires 8 may be arranged
in groups as indicated at the lower part of Fig
ure. 1.
succession contacts with the time members of the
selected crossing points.
2. A master switch as claimed in claim 1, where
in a frame element is provided in which the sets
of members are ?xed relatively to one another
For example, one group 24 may comprise
wires concerned in the supply of hot water to the
washing machine, each member of the group cor
responding with a different quantity of hot water
to be admitted. There may be a similar group
25 for cold water, another 26 for soap in graded
quantities and likewise other groups. Individual
wires may be allocated for dispensing ?xed quan~
titles of various other materials employed in the
washing process. Also individual wires are pro
vided corresponding with the opening of a steam
supply valve and the closing thereof and the
opening of the washer outlet and the closing
thereof. A wire may be provided for an alarm
to give notice of any particular condition or
operation and a wire may correspond with a cir
and the contact pieces comprise jacks adapted to
hook on to the members of one set and spring
contact elements to engage the members of the
other set.
3. A master switch as claimed in claim 1,
wherein a supporting frame is provided for carry
40
ing the travelling contact control member, a
frame element detachably mounted on the sup
porting frame for carrying the two sets of mem
bers, and spring contacts carried by the support
ing frame adapted to engage the operating mem
bers when the frame element is in its operative
position.
4. A master switch as claimed in claim 1,
wherein a motor driven travelling endless mem
her is provided having a rectilinear path parallel
to the plane of the set of time members, a plurality
of contact control members mounted at spaced
The jacks 18 are mounted in the appropriate .
intervals on the endless member and each control
positions as indicated for example in Figure 1
member having a wiper contact adapted to engage
according to the scheme of operation required
the time members in succession and a spring con—
and as a contact device 2 traverses the time wire
tact engaging a bus bar.
6 from the lowest to the uppermost, the various
5. A master switch as claimed in claim 1,
functions of the washing machine are automat
wherein a motor driven travelling endless mem
ically brought into operation together with the
ber is provided having a rectilinear path parallel
supply of water and washing fluids etc.
to the plane of the said time members, a plurality
A number of panels comprising the frame I
of contact control members mounted at spaced
and the two sets of wires 6 and 8 having differ
intervals
on the endless member, hand operated
ent layouts of jacks may be made up and stocked
so that the scheme of operation of the washing (it) means provided to traverse the contact control
member, comprising a hand wheel operably con~
machine may be quickly changed at will by sim
nected to the travelling endless member, and a
ply removing one panel and substituting an
friction clutch in the drive from the motor to the
other.
travelling endless member.
In order to enable the contact devices 2 to be
6. A master switch as claimed in claim 1,
traversed by hand a hand wheel 28 is provided at
wherein a set of frames are provided each sup
a convenient position. The hand wheel 28 is
porting a different arrangement of contact pieces
mounted on a spindle 29 which carries a sprocket
according to alternative layouts suitable for the
wheel 30 which drives by means of a chain 3| a
operation of the plant or apparatus.
sprocket wheel 32 mounted on the spindle 33 of 70
the chain sprocket l l. A friction clutch 34 is in
cuit for starting the machine and another for
stopping it.
STANLEY NEWBERY.
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