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Патент USA US2406693

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AEJrg‘e 27, 1946.
R H. JQRDAN
2,405,693
SWITCHING APPARATUS
Filed Sept. 15, 1943
%j' EF-MIEITgMLIC
2 Sheets-Sheet 1
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INVENTOR.
W HW
Aug 27, 1946'-
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R. H. JQRDAN
,
2,4653
SWITCHING APPARATUS
Filed Sept. 15', 1945
2 Sheets-Sheet 2
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Wm M
Patented Aug. 27, 1946
2,405,693
UNITED STATES PATENT OFFICE
2,406,693
SWITCHING APPARATUS
Richard H. Jordan, Mans?eld, Ohio, assignor to
Dominion Electrical Manufacturing, Inc., a
corporation of Ohio
Application September 15, 1943, Serial No. 502,481
11 Claims.
1
(01. 200_13s)
'
2
Figure 6 is a diagrammatic view illustrating the
My invention relates in general to switching
apparatus and more particularly to switching ap
electrical circuit for the iron; and
Figure 7 is a fragmentary view showing a mod
paratus controlled by push buttons and adapted
i?cation of the push button.
to be utilized in connection with electrically
heated devices.
In the drawings, the electrical connections of
CR
the cord and other terminal leads as well as the
My invention will be described in connection
handle have been left off for purposes of clarity.
The sole plate of the iron is designated by the
devices of all kinds which are thermostatically
reference character IG upon which is mounted a
controlled.
10 heating element I l and a pressure plate l2. The
shell E3 of the iron is removed in Figures 1 and 5
An object of my invention is the provision of
a plurality of push buttons to operate upon a pin
but is shown in cross-section in Figures 2, 3 and 4.
The switching apparatus is controlled or gov
rality of individual switches, each of which is
set to operate at a different predetermined tem
erned by a thermostat is which may be of any
perature.
suitable construction. As illustrated, one end of
the thermostat M which may be constructed of
Another object of my invention is the provision
of controlling the temperature at which an elec
bi-metallic metal, is anchored to the sole plate
trically heated device is operated by push but
Ill by a screw l5 and the other end of the ther
ton control.
mostat is provided with an insulating button It
which is arranged to actuate a lower contact
Another object of my invention is the provi
spring l9. Positioned above the lower contact
sion of a plurality of push buttons which may be
spring is an upper contact spring 88, both of
selectively locked in any one of a number of
which contact springs are carried by a contact
positions to control the temperature at which
support I‘! which may be suitably anchored or
the electrically heated device is operated.
. otherwise fastened to the sole plate H] by means
Another object of my invention is the provi
of screws. The upper and lower contact springs
sion of a release push button which when oper
l8 and I9 are shown in Figure 6. When electrical
ated releases all of the push buttons which ac
contact is made between the upper and lower
tuate the individual switches.
'
contact springs l3 and IS, a circuit is estab
Another object of my invention is the provision
of a switching apparatus which may be controlled 30 lished through the conductors 24 for energizing
the electrical heating element l! for the iron.
by a plurality of push buttons and which is simple
The upper contact spring It comprises a plu
to manufacture and reliable in operation.
rality of contact ?ngers 20, 2! and 22 and a short
Other objects and a fuller understanding of
with an electric iron but it is to be understood
that my invention applies to electrical heating
?nger 723. The lower contact spring 59 comprises
lowing description and claims, taken in conjunc 35 a plurality of contact fingers 2?, 28 and 29,. As
illustrated, the plurality of contact ?ngers carry
tion with the accompanying drawings, in which:
my invention may be had by referring to the fol
contact points which may be of suitable material
Figure I is a plan view of an electric iron em
to produce long life and wear. The contact points
bodying the features of my invention with the
carried by the contact ?ngers 2i} and 2'! com
top shell of the iron removed and with the
lower contact spring and thermostat deleted to 40 prise a set, the contact points carried by the
?ngers 2i and 28 comprise another set, and the
clarify. the drawing;
contact points carried by the contact ?ngers .22
Figure 2 is a cross-sectional View of Figure 1
and 29 comprise a third set. When any one of
taken along the line 2-—2 thereof, the Figure 2 ' these sets of contacts make electrical engage
showing the lower contact spring and the ther 45 ment, a circuit is established for energizing the
mostat;
heating element ll of the iron. The contact
Figure 3 is a cross-sectional view taken along
?ngers 20, 2| and 22 are controlled, respectively,
the line 3—3 of Figure 1 with the contacts shown
by switch push buttons 39, 3! and 32. A fourth
in their open position;
push button 33 is employed as a release push but~
Figure 4 is a View similar to Figure 3 but shows
ton so that when it is operated all of the switch
the contacts in the closed position;
push buttons so, 3! and 32 are restored to their
Figure 5 is a View similar to Figure 1 but shows
off position.
the thermostat and lower contact spring only
All of the push buttons are slidably guided by
with the upper contact spring and push buttons
a bridge support 34 in combination with the shell
removed;
55 l3. The birdge 34 may be suitably anchored to
2,406,693
3
4
the pressure plate l2 by means of screws 35 and
the upper bridge portion has a plurality of spaced
openings or guide holes 4| to receive the push
button is pressed down, this again will move the
buttons. The shell |3 is also provided with guide
holes which are in alignment with the guide holes
in the bridge support 34. Positioned. below the
slidable latch member 36 towards the front of
the iron and at a certain point in the depressing
of the push button the slidable latch member 36
will release the previously depressed button and
will hold or arrest the push button which is being
upper bridge portion of the bridge support 34 is
depressed in its downward position.
a slidable latch member 36 which is constrained
towards the rear of the iron by a spring member
31 which is fastened to the top of the left-hand
end of the bridge support by the screw 35. Each
of the push buttons is provided with a shoulder
38 and a circular recess 39. The shoulders 38
engage the underneath side of the shell l3 and
button 33 has no recess and is only used to release
prevent the push buttons from being pushed upwardly through the openings in the shell. rI'he
slidable latch member 36 is provided with a plu
rality of spaced openings to receive the push but
tons when they are depressed. The spaced open~
ings in the slidable latch member 36 are desig
nated by the reference character 4!) and are of
the same spacing as the spacing of the holes 4|
in the upper portion of the bridge support 34.
The lower ends of the push buttons are conical
in shape and are such that when the push but
tons are depressed, the conical shaped ends push
the slidable latch member 36 to the front end
of the iron.
Just as soon as the conical end por
The push
any of the other push buttons. It will not stay
in the down position because it has no circular
recess into which the slidable latch member 36
can engage.
The reason for this release push button con
struction is that if the operator should push all
of the push buttons 30, 3| and 32 down at the
same time they would all be locked in the down
position. There would be no means for moving
the slidable latch member 36 to the release posi
tion so that the buttons would be restored to
their upper position.
The push button , 33 is
added for releasing all of the other push buttons.
Another advantage of the releasing push button
33 is that in the “oil” position, all of the switch
buttons will be up and therefore look symmetrical.
The lower contact spring I9 functions substan
tially as a solid spring member so that as it is actu
ated by the thermostat I4, all of the contacts 21,
28 and 29 move simultaneously together in the
tions are pushed through the holes 49 in the
same level. When the thermostat is heated‘ the
slidable latch member 36, the spring 31 imme 30 insulating button I6 moves downwardly and as it
diately pushes the slidable latch member 33 to
moves downwardly the lower contact spring l9
wards the rear end of the iron and causes the
accordingly moves downwardly and spaces the
slidable latch member 36 to hold the depressed
contact ?ngers 21, 28 and 29, respectively, from
push button in its downward position. In Figure
the contact ?ngers 20, 2| and 22. Inasmuch as
2, the push button 32 is illustrated in its depressed
the contact ?ngers 29, 2| and 22 are arrested upon
position and the slidable latch member 35 is en
di?erent levels depending upon the adjustment
gaging the circular recess in the push button 32.
of the adjustable stops 46, 41 and 48, respectively,
The lower conical ends of the push buttons 35!,
the temperature at which the iron is operated is
3| and 32 are arranged to engage, respectively,
governed by the depressing of a selected push
the contact ?ngers 29, 2| and 22. The down 40 button. Thus, for example, the adjustable stop
ward movement of the contact ?ngers 29, 2| and
46 may be set to produce a high operating tem
22 is arrested when the ?ngers engage the stops
perature, the stop 41 may be adjusted to give a
46, 41 and 48, respectively. The stops are made
medium operating temperature, and the stop 48
adjustable so that the downward movement of
may be adjusted to give a low operating temper
the contact ?ngers 29, 2| and 22 may be arrested ,k. in ature.
at different elevations or positions to give differ
In Figure 7 I show an alternate design of the
ent temperature settings for the iron. The lower
switch push button so that there is no need for
end of the push button 33 is arranged to engage
the release push button 33. By modifying the
the short ?nger 23 which acts as a spring to re
switch push buttons 30, 3| and 32 to have a bev
store the push button to its uppermost position.
elled surface 54 as indicated, then in the event
The contact ?ngers 29, 2| and 22 operate also
all of the push buttons are pushed down at once,
as springs to restore the push buttons 39, 3| and
it is only necessary to further depress any one of
32 to their uppermost position.
the three push buttons to release the others, the
In Figure 2 the push button 33 is depressed and
releasing action being effected by the bevelled
the slidable latch member 36 is engaging the
surface 54 urging the slidable latch member 36 to
circular recess 39 thereof to hold the push button
one side to free the recesses 39 in the push but
in its lowermost position. The set of contacts
tons. With the modi?cation of the push but
carried by the contact ?ngers 22 and 29 are
tons as illustrated in Figure '7, it is noted that one
making engagement to electrically energize the
push button will always be in a down position. A
heating element l3. Now let it be assumed that
release push button of the design of Figure '1 may
the push button 3| is depressed. During the
be added to restore all of the push switch buttons
?rst initial movement of the depressing of the
to the upper “off” positions to de-energize the
push button 3| the conical shaped end thereof
iron.
engages the side wall of a hole 40 in the slidable
Although I have described my invention with a
latch member 36 and constrains or pushes the
certain degree of particularity, it is understood
slidablelatch member 36 towards the front of the
that the present disclosure has been made only
iron against the spring 31. When the complete
by way of example and that numerous changes
conical end is pushed within the hole 40 the slid
in the details of construction and the combina
tion and arrangement of parts may be resorted
able latch member 36 releases the push button
32, whereupon it is pushed upwardly by the con
to without departing from the spirit and the scope
tact ?nger 22 and is restored to its uppermost
of the invention as hereinafter claimed.
position. When the recess of the push button 3|
I claim as my invention:
1. In an electrically heated device having a
is depressed to the same level as the slidable latch
temperature responsive device, the improvement
member 36 it is then held in its lowermost posi
tion as shown in Figure 4. If now another push 75 of switching apparatus for controlling the elec
aeoacos
5
6
trically heated device, said improvement C0111:
end movable members being, actuated relative
prising a plurality» of switches adapted to open
to the?rst movable members by the temperature
and close a circuit to the electrically heated de
vice, each of said switches having, a ?rst movable
member and a second movable, member normally
responsive device, a push button for each switch
for actuating respectively the ?rst movable mem
bers of the switches toward the second movable
constrained to open position, said second‘ movable
members to close the circuit, a stop for each
members being actuated relative to the ?rst mov
switch to limit respectively the travel of the ?rst
able members by the temperature responsive de
movable members when actuated by the push
vice, a push button for each switch for actuating
buttons, the stop for each switch determining the
respectively the ?rst movable members of the 10 temperature at which the selected switch is oper
switches. toward the second movable members to
ated, and selective locking means for each push
close the circuit, a stop for each switch to limit
> button to selectively lock the push buttons in
respectively the travel of the ?rst movable mem
an actuated position, and push button‘ means
bers when actuated by the push buttons, the stop
for relea-sine'the selective locking means.
for each‘ switch determining the temperature at 15
5. In an electrically heated device having a
which the selected switch is operated, and se
temperature responsive device, the improvement
lective locking means for each push button to
of,‘ switching apparatus for controlling the: elec
selectively lock the push buttons in an actuated
trically’ heated device, said improvement com
position.
prising a plurality of. switches adapted to open
2. In an electrically heated device having a
and close a circuit to the electrically heated de
temperature responsive device, the improvement
vice, each of said switches having a ?rst movable
of switching apparatus for' controlling the elec
member and a second movable member normally
trically heated device, said improvement compris
constrained to open position, said second-movable
ing a plurality of switches adapted to open and
members being actuated relative to the ?rst
close a circuit to the electrically heated device,
movable members by the temperature respon
each of said switches having a ?rst movable
sive device, a push button for each switch for
actuating respectively the ?rst movable mem
member and a second movable member normally
constrained to open position, said second mov
bers of the switches toward the second movable
members to close the circuit, a stop for each
movable members by the temperature responsive 30 switch to limit respectively the travel of the ?rst
movable members when actuated by the push
device, a push button for each switch for- actuat
ing respectively the ?rst movable members of‘ the
buttons, the stop for each switch determining
the temperature at which the selected switch is
switches toward the second movable members to
operated, and selective locking means for each
close the circuit, a stop for each switch to limit
push button to selectively'lock the push buttons
respectively the travel ofv the first movable mem
in
actuated position, said selected locking
bers when actuated by the push buttons, the stop
means comprising a locking plate having a plu- ,
for‘ each switch determiningv the temperature at
rality of engaging latch means beside which the
which the selected switch is operated, and selec
push buttons pass, each said push button having
tive locking means for each push button to se
notch means to receive respectively the latch
lectively lock the push buttons in an actuated
means, means. for‘ urging the locking plate trans
position, and means for adjusting the position of
versely of the push buttons, whereby when a
each of. said stops,
3. In an electrically heated device having a
selected push button is actuated and the notch
temperature responsive device, the improvement
means therein. is aligned with the associated
of switching apparatus forv controlling the elec
latch means the said selected push button is
trica1ly~ heated device, said" improvement com
held in its actuated position, the actuation of‘ a
prising a plurality of switches adapted to, open
selected push’ button transversely moving the
locking plate and- releasing the previously’ se—
and close a circuit to the electrically heated de
lected push button.
vice, each of said switches having‘ a ?rst. mov
6. In an electrically heated‘ device having a
able member and a second movable member nor
temperature responsive device, the improvement
mally constrained to open position, said second
of switching apparatus for controlling the elec~
movable member moving as a unit and being
actuated relative to the ?rst movable members
trically heated device, said improvement com
by the temperature responsive device, a. push
prising, a plurality of switches adapted to open
button for each switch for actuating respectively
and close a circuit to the electrically heated de
the ?rst movable members of the switches toward
vice, each of said‘ switches having a ?rst mov
able member and a second movable member nor—
the second movable members to close the circuit,
a stopv for each switch to limit respectively the
mally constrained to open position, said second
travel of the ?rst movable members when actu
movable members being actuated relative to the
?rst movable members by the temperature re
ated by the push buttons, the stop for each
60
switch determining the temperature at which
sponsive device, a push button for each switch
the selected switch is operated, and selective
for acutating respectively the ?rst movable
locking means for each push button to selec
members of the switches toward the second mov
tively lock the push buttons in an actuated po
able members to close the circuit, a stop for
sition, and means, for adjusting the position of 65 each switch to limit. respectively the travel of
each of said stops.
the ?rst movable members when actuated by
4. In an electrically heated device having a
the push buttons, the stop for each switch de
temperature responsive device, the improvement
termining the temperature at which the selected
of switching apparatus for controlling the elec
switch is operated, selective locking means for
trically heated device, said improvement com 70 each push button to selectively lock the push
prising a plurality of switches adapted to open
buttons in an actuated position, said selected
locking means comprising a locking plate having
and close a circuit to the electrically heated
device, each of said switches having a ?rst mov
a plurality of engaging latch means beside which
able member and a second movable member
the push buttons pass, each said push button
normally constrained to open position, said sec 75 having notch means to receive respectively the
able members being actuated relative to the ?rst
2,406,693
7
8
latch means, means for urging the locking plate
transversely of the push buttons, whereby when
vice, said switches comprising a plurality of
switch members electrically connected in series
a selected push button is actuated and the notch
means therein is aligned with the associated
member to contact said switch members, said
to a branch of an electric circuit, and a contact
latch means the said selected push button is held
in its actuated position, the actuation of a se
contact member being electrically connected to
lected push button transversely moving the look
ing plate and releasing the previously selected
push button, and separate push button means for
transversely moving the locking plate to release
all the push buttons.
temperature responsive device being disposed to
a second branch of the said electric circuit, said
actuate said contact member in response to tem
perature changes of the electrically heated de
vice and move said contact member into contact
and out of contact with a selected switch mem
ber, stop means and selective locking means for
'7. In an electrically heated device having a
temperature responsive device, the improvement
each switch member to selectively lock the switch
of switching apparatus for controlling the elec
trically heated device, said improvement com
prising a plurality of switches adapted to open
and close a circuit to the electrically heated de—
members in an actuated position.
10. In an electrically heated device having a
temperature responsive device, the improvement
of switching apparatus for controlling the elec
trically heated device, said improvement com
prising a contact member electrically connected
vice, each of said switches having a ?rst mov—
able member and a second movable member
normally constrained to open position, said sec
ond movable members being actuated relative to
to a ?rst branch of an electric circuit, a plurality
of switch members, said plurality of switch mem
the first movable members by the temperature
bers being electrically connected in series to a
responsive device, a push button for each switch
second branch of the said electric circuit, and a
for actuating respectively the ?rst movable
plurality of actuating means to control the
members of the switches toward the second mov
switch members, each of said plurality of actu
able members to close the circuit, selective lock
ating means being disposed to selectively con
ing means for each push button to selectively
strain one of said switch members and thereby
lock the push button in an actuated position,
position said switch member relative to said
each of said push buttons having engaging means
contact member, each of the said actuating
to engage the selective locking means, the said 30 ‘means being disposed to move its respective
engaging means being located at a longitudinal
switch member to a different position relative to
location on each push buttin to provide a speci?c
said contact member, said temperature respon
longitudinal setting for each push button with
sive device being disposed to actuate said con
respect to the ?rst movable member of its co
tact member in response to temperature changes
operating switch, the longitudinal setting of the 35 of the electrically heated device and move said
push button determining the temperature at
contact member into contact and out of contact
which the selected switch is operated, and sepa
with a selected switch member constrained to a
rate push button means for releasing the selec
selected distance from said contact member by
tive locking means from the push buttons, to
one of said plurality of actuating means, and
permit all depressed push buttons to return to 40 thereby operate the said electric circuit of the
their released position, said separate push
electrically heated device at a predetermined
button means being self-returnable to its original
temperature selected by operating a selected actu
position.
8. In an electrically heated device having a
temperature responsive device, the improvement 4
of switching apparatus for controlling the elec
trically heated device, said improvement com
prising a plurality of switches adapted to open
and close a circuit to the electrically heated de
vice, each of said switches having a ?rst mov~ ,
able member and a second movable member,
said second movable members being actuated
relative to the ?rst movable members by the tem
perature responsive device, a push button for
each switch for actuating respectively the ?rst
movable members of the switches relative to the
second movable members, a stop for each switch
to limit respectively the travel of the ?rst mov
Cl or
temperature responsive device, the improvement
of switching apparatus for controlling the elec
trically heated device, said improvement com
prising a plurality of individually controlled
switches, said individually controlled switches
comprising individually adjustable members, a
common contact member, a plurality of push
buttons to selectively operate the individual ad
justable members, each of said push buttons be
ing disposed to move its respective adjustable
member to a position relative to said common
contact member, the position of each adjustable
member being di?ferent from the other adjust
able members relative to said common contact
able members when actuated by the push buttons,
the stop for each switch determining the tem SO
perature at which the selected switch is oper
ated, and selective locking means for each push
button to selectively lock the push buttons in an
actuated position.
9. In an electrically heated device having a
member when adjusted by its respective push
button, said temperature responsive device be
ing disposed to actuate said common contact
member in response to temperature changes of
the electrically heated device and move said
common contact member into contact and out
of contact with a selected adjustable member
adjusted to a selected distance from said common
temperature responsive device, the improvement
of switching apparatus for controlling the elec
trically heated device, said improvement com
prising a plurality of switches adapted to open
and close a circuit to the electrically heated de
ating means.
11. In an electrically heated device having a
contact member by one of said plurality of push
buttons.
70
RICHARD H. JORDAN.
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