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Патент USA US2411199

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Nov. 19,}945. ‘
' 2,411,199
Filed Aug. 19, 1943
2 Sheets-Sheet 1
FIG. 1 .
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BY. 7?/, MM
Nov. 19, 1946.
Filed Aug. 19, 1943
2 Sheets-Sheet 2
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Patented Nov. 19, 1946
Richard I. Felver, Mans?eld, Ohio, assignor to
Westinghouse Electric Corporation, East Pitts
burgh, Pa., a corporation of Pennsylvania
Application August 19, 1943, Serial No. 499,207
3 Claims.> (01. 38--77)
My invention relates to a steam iron, and more
particularly to the type of steam iron which in
cludes means for supplying water at a regulated
rate to a steam generator provided within the
iron, and has for an object to produce an improved
iron of the type set forth.
A further object of my invention is to produce
a steam iron of the type set forth which includes
means for automatically shutting oil the water
supply from the steam generator when said iron 10
is placed upon, or in abutment with, a support,
during temporary interruption of the ironing op
eration and for restoring the water supply upon
removal of said iron from said support for re
sumption of the ironing operation.
A further object of my invention is to produce
' a steam iron of the type set forth in which the
suitably secured together. The interior of the
cover I2 is provided with a suitable partition H,
which, together with the side and top walls of the
cover, de?nes a liquid reservoir l5.
Water, or
other liquid suitable for dampening clothes, is
introduced into the reservoir I5 through an open
ing provided in the top of the cover 12 and nor
mally closed by a removable plug it (Fig. 2). The
reservoir l5 may be vented in any desired man
The soleplate ll may be of conventional out
line and is heated by a heating element 1‘! em
bedded therein. The heating element ll may be
of any well-known construction and comprises an
outer sheath l8 having a resistance element It
supported in spaced, insulated relation thereto
in any well-known manner, and energized by con
means for shutting o? and restoring the water
ductors 2! which are sheathed in a sleeve Zla.
supply is operable independently of and without
_ The heating element ii is connected to the con
a?eeting the adjustment of the water supply or
ductors 2| in series with a manually-admsted
the adjustment of the temperature control of such 20 thermostat 22 which is carried by and is respon
sive to the temperature of the soleplate l l.
A still further, object of my invention is to pro~
The thermostat 22 is adjusted by means of a
duce a steam iron embodying the improvements
knob 23 ?xed to a shaft 24, journaled in bearings
set forth, which will be simple and inexpensive to 25 25 ?xed to the top of the cover 12. Theknob Z3
.is arranged so that the upper portion thereof
These and other objects are e?ected by my in
projects through a window 26 provided in the top
' vention as will be apparent from the following
of the cover I2. The knob 23 is provided with a
description and claims taken in accordance with
scale 21, adapted to be read in conjunction with
the accompanying drawings, forming a part of 80 an index 28 ?xed to the iron adjacent the window
this application, in which:
26 for indicating the selected ironing tempera
Fig. 1 is a View partly in vertical section and
partly in elevation, showing aysteam iron em
The rear end of the rod 24 is provided with
bodying my invention;
a cam 29 which engages the upper end or a rod
Fig. 2 is a top plan View of the iron illustrated
30 operatively connected to the thermostat 22.
in Fig. 1, with the handle removed and with the 35 The rod 30 is slidable in a vertical sleeve 3 l, which
water supply regulating valve open;
extends through the reservoir (5 and is secured
Fig. 3 is a fragmentary view, showing the left
in ?uidtight manner to the upper and lower walls
hand portion of Fig. 2 with the regulating valve
Figs. 4 and 5 are‘ fragmentary sectional views
on lines IV—IV and V—V of Fig. 2-, respectively;
Fig. 6 is a view similar to Fig. 3, showing the
As the shaft 24 is rotated by means of the knob
23, the cam 29 raises or lowers the rod 30 to
adjust the thermostat to maintain the soleplate
at any desired temperature. The rod 30 is spring
regulating valve closed during temporary inter
biased upwardly to maintain the same in engage~
ruption of the ironing operation;
45 ment with the cam 29, and is provided with an
Fig. 7 is a perspective view of the iron shown in
adjusting screw 32, the head of which engages
Figs. 1 and 2;
the cam 29 to aid in calibrating the thermostat.
Fig. 8 is a. perspective view of a steam iron
The thermostat and its adjusting mechanism
embodying a modi?ed form of my invention; and,
is preferably arranged so that the high point 33
Fig. 9 is a view similar to-Fig. 2, showing de 50 (Fig. 5) of the cam maintains the thermostat
tails of the modi?ed form of invention.
‘ continuously open regardless of the temperature
Referring ?rst to the embodiment of the inven
of the soleplate, to provide an “oif' position for
tion illustrated ‘in Figs. 1 to 6, inclusive, there
the iron.
is shown a steam iron I 0 comprising a. soleplate H,
The heating element i‘! is preferably U-sliaped,
a cover member l2, and a handle 13, which are 55 and the soleplate is provided with a recess 34
located within the bight of the U-shaped heat
-ing element and opening on the ironing sur
face 35 of thesoleplate. The lower end of this
recess is closed by a removable plug 35 which is
spaced from the wall 37 of the soleplate, over
lying the recess 34, to de?ne a steam-generat
ing space within the soleplate. The plug 35 is
provided with a raised annular rib or ba?ie 35,
which divides the space within the soleplate into
thermostat, so as to provide a rate of water ?ow
to the steam generator which will supply the cor
rect amount of steam for the type of material to
be pressed. Thus, the cams Hand 59 are cor
related so thatior each temperature setting of
the thermostat e?ected by the cam 29, the cam
59 will open the water valve a certain amount to
provide the correct rate of wate ?ow to the steam
generator. ‘It is also to be noted that the valve
two communicating compartments 39 and 55; 10 may be opened (Fig. 2) or closed (Fig. 3 without
When water from the reservoir l5 issupplied to I
the compartment 39, it is instantly ?ashed into
changing the adjustment of the cams 29 and
'59. Therefore, the iron remains at the desired
temperature and when the ‘valve is opened the
The steam' thus iormed ?ows over the
supply of water will be at the rate to which it
annular rib 38 into the compartment 49, from
been previously set.
. '
which it is discharged, through ports 4i provided 15
In Figs. 4 and 5, the cams 59 and 29' are shown
in- the plug 35, to the material to be pressed.
on an enlarged scale in the position they as- .
The reservoir i5 and the steam-generating
sume when the knob 23 is set at “Off.” In these
space are connected by a passage 43 formed in a
?gures, the parts of the cams which respec
bushing 92, which is disposed between and se- engage the lever 58"and adjusting screws
cured in ?uidtight relation to the lower wall it 20 tively
the knob is adjusted for a particular
of the reservoir and the upper wall 51 of the
temperature setting are identi?ed by the same
legends appearing on the knob itself. Thus, when
The upper end of the passage 43 is ?ared out
the knob Eli-is turned to bring the legend “linen”_
wardly to provide a valve seat 55 for the lower,
opposite the index 29, ‘the point on the cam 29
tapered end 45 of a valve stem 51 to close the
identi?ed by the legend “linen” in Fig. 5 will
passage. The valve stem extends through and ‘
overlie the screw head 32 and adjust the thermo
is guided for vertical movement by a sleeve 58
stat 22 to maintain the soleplate at a tempera
secured in ?uidtight relation to the upper wall
ture suitable for ironing linen. Similarly, this
of the reservoir i5 and telescoped over the re
duced upper end of the bushing 52] The/sleeve 30 setting of the knob 25 will bring the point of
the cam 59 identi?ed by the legend “linen”_be
48 is provided with suitable apertures 59 which
neath the arm 59 to raise the valve stem su?i
permit water in the reservoir-chamber i5 to enter
ciently to provide a rate of water ?ow to the
the passage 43 when the valve is open.
steam generator sumcient to correctly dampen
The upper end of the valve stem Lil extends
through an opening in a bracket 5! which is ?xed 35
to the iron and which serves as an abutment for
mso, in Figs. 4 and 5, reference circles 59a and
25a, respectively, are provided to show the extent
the upper end of a compression spring 52 coiled
to which the valve stem 91 is raised by the cam 59
about the upper end of the valve stem 657. The
as the knob 25 is turned from “rayon” to “linen,”
lower- end of the compression spring'52 rests upon
a lever 54, which is suitably secured to the valve 40 and the amount the thermostat adjusting rod?ii ,
is permitted to rise as the knob 23 is turned from
stem 51. The spring 52 normally biases the valve
the “off” position to the “linen" or main'mum tem
stem 41 downwardly toward valve-closing posi
perature position. In these ?gures, curved arrows
indicate the direction of rotation of the earns as
The lever 55 includes an offset handle portion
55 which extends beyond the side of the handle ' Y the knob is turned throughout the range of ad
justment from “o?” position through progres
l3, through a slot formed therein. An angularly
sively higher temperature settings up to maxi
disposed arm 58 is secured to the valve stem iii
' in ?xed relation to and movable with the lever
mum temperature position.
During an ironing period there are frequent
56. An over-center spring 55 is secured at one
end thereof to the handle ‘55 of the lever 55, and 50 interruptions during which the iron is temporarily
idle. These interruptions occur when a new piece
is secured at its other end to the bracket 5!
of work is being prepared'ior ironing, when a’
on the centerline 57. The spring 55 constitutes a
piece of work being iron has ;to be moved or iold- _
snap-acting or toggle mechanism which serves
ed, or when a ?nished piece of work is put away,
to urge and retain the lever 59 in position to
either side of the centerline 8?. Suitable stops
In order automatically to shut on? the water
51 prevent the movement of the lever 55 beyond
supply when the ironing operation is thus tem
the two positions.
porarily interrupted and in order .to leave the
The arm 58 is adapted to ride on, or to assume
valve in position automatically to open as soon
a position clear of, a cam 59 carried on the for
ward end of the rotatable rod 24, depending on 60 as the ironing operation is resumed, I provide a
rod 54 which is slotted at 65 to engage guide pins
the position of the lever 55. Thus, in the posi
58 carried by brackets 69 which, in turn, are car'
tion of the lever 54 shown in Fig. 3, the arm 58
ried' by a-sui'tabie portion of the body of the iron,
is clear of the cam 59 and the spring 52 main
such as the top of the cover H2. The rod 84 is
tains the water valve closed. This position of
the lever is identi?ed by the legend “Dry” on 65 bent to form an-elbow ‘l9 and a vertical portion '
the iron. By moving the lever 55 to the position
‘i2 which terminates in a horizontal extension ‘H
shown in Fig. 2, the arm 58 rides on the cam
projecting beyond the rear end of the handle l3
59 and, depending upon the position of the cam,
as clearly shown in Figs. 1 and 2. The vertical
is raised thereby to raise the valve stem 51 and
portion 12 of therod 64 is movable in a space
open the water valve. This'position of the lever 70 / 15 provided within the handle l3 and de?ned by
may be termed‘ the steam position and is~so
walls 18 and-80. At its inner end, the rod 84 is
identi?ed by the legend “Steam.”
The cam 59 is of such contour as to close,
provided with a pin 82, which, in the inner posi
tion of the rod 64', is adapted to engage an arm
or partly or fully‘to open, the water. valve, de
pending upon the temperature adjustment of the 75 84 ?xed to the valve stem 41. The rod N. as a
whole, is biased' to the right in Figs. 1 and 2 by a
spring 86.
the end 14 or $9 will project through a side or
some other portion on which the iron may be
Operation-Figs; 1 and 2
During the actual ironing, the rod 64 is en
rested while temporarily idle. Also, ‘it is pointed
out that the invention may be applied to the
ordinary, heel rest type of iron in which the bosses
tirely ineffective, and the iron may be turned on
90 and IN may be omitted.
While I have shown my invention in several
forms, it will be obvious to those skilled in the
art that it is not so limited, but is susceptible of
or o?.’ or adjusted as to water supply and tem
perature, in the manner above set forth. When
the ironing operation is momentarily interrupted,
the iron is usually stood on its end (Fig. 8). In 10
various other changes and modi?cations without
departing from the spirit thereof, and I desire,
in contact with the ironing board or other sup
this position, the extension 14 of the rod 64 comes
therefore, that only such limitations shall be
port, and, under the weight of the iron the rod
64 moves inwardly relative to the body of the
iron and against the action of the spring 86. The 15
iron now rests on the tip 88 of the handle I3, the
rear boss 90 ofthe cover 52 and the boss Hill
placed thereupon as are speci?cally set forth in
the appended claims.
WhatIclaim is:
1. The combination with a steam iron com
prising a soleplate, heating means for said sole“
plate, a, thermostat for controlling said heating
the left in Figs. 1 and 2, causes the pin 82 to en; 20 means, a steam generator carried by said sole
plate, valve means including a valve stem and a
gage the arm 84 of the lever 56 and thus rotate
spring biasing said valve stem downwardly to
the valve stem 47 in clockwise direction in Fig.
closing position, to shut oil‘ the supply of
2, The arm 58 now moves from the position
water to said steam generator, means for con
shown in Fig. 2 in which the arm 58 rides on
formed on the side and near the end of the sleeve
21a. The movement of the rod 64 inwardly, or to
the cam as and the water supply regulating valve .
is open, to the position shown in Fig. 6 in which
the arm 58 is out of engagement with the cam
comitantly adjusting said thermostat and said
- valve to vary the temperature of said soleplate
and the rate of ?ow of water to said steam gen
erator, said means including a shaft, a first cam
59 and the valve is closed. It will be noted that,
by said shaft and operatively associated
in this position, the lever 54 remains to the left
with said thermostat, a secondcam carried by
of the centreline 81. Therefore, as soon as the
iron is lifted and the pressure on the'rod 64 is 30 said shaft and disposed near said valve means, a
lever secured to said valve stem and movable to
relieved, the spring 86 biases the rod 54 to the
a ?rst position and to a second position, an arm
right and withdraws the pin 82 out of the path
vmovable with said lever to ride on said second cam
oi.’ movement of the end 84 of the lever 54. The
to raise said valve stem against the action of said
spring 56 now automatically moves the lever arm
spring thereby to open said valve means, said
54 back to the position shown in Fig. 2, in which
arm being adapted, in the second position of said
the water supply regulating valve is again open
lever, to clear said second cam thereby to permit
to whatever extent it may have been previously
said spring to bias said valve stem to close said
' adjusted. As above pointed out, if it is desired
to use the iron dry, the lever 54 is moved manual 40 valve means, and a toggle mechanism for retain
ing said lever in either of said positions, of means
ly to the right of the centerline 81 and is urged
for closing said valve, without changing the ad
to and maintained in the position shown in Fig.
justment of said valve or said thermostat, includ
3 by the spring 56. In this position, the water
ing a movable member carried by said iron and
supply regulating valve is closed and the rod 64 is
having one end thereof projecting through a sur
entirely ine?ectivewhether the iron is in actual 45 face of the iron other than the soleplate thereof,
use or is momentarily idle.
with the other end of said member disposed adja
In'Figs. 8 and 9, I show an alternate construc
cent to, and adapted to engage one vend of said
tion in which the elbow ‘ID, the vertical portion
lever, and a spring biasing said member outwardly
12 and the extension 14 of the rod 64 are omit- '
. or in a direction away from said lever, said mem
- ted. In this construction, the rod 54a is pivoted. 50 ber being so constructed and arranged that when
at 8| to a lever 92, the inner‘ end of which is piv
said iron is placed on a support, with said surface
oted at 96 to a bracket or the like 98 carried by,
thereof in contact with said support, said member
or forming part of, the top of the cover Hi. The
actuates said lever to said second position, but
lever 92 extends, and is movable within an open
not past the dead center of said toggle mech
ing in the sleeve 21a and the ?nger 99 formed at 55 anism, whereby said toggle mechanism automati
the outer end of the lever 92 projects through an
cally returns said lever to said ?rst position when
opening in the boss “)0.
said iron is lifted off said support.
The operation of the embodiment of Figs. 8
2. A steam iron including a steam generator
and 9 is identical withthat of the embodiment
?rst desoribed'except that when the iron is stood 80 carried by said iron, a valve for supplying water
to said steam generator, valve control means in+
on its end, as shown in Fig. 8, the extension of
eluding a member adapted to be manually posi
the lever 92 is pushed inwardly through the 1101
tioned to close the valve or to permit opening of
low boss I00 and sleeve 2 la to actuate the rod 640.
valve, said control means further including
It will be noted that, in both embodiments, the
movement of the lever 54 and arm 58 from the 65 an element adapted to be engaged by a support on
position shown in Fig. 2 to the position shown in
Fig. 3 or 6 does not in any way affect the adjust
. ment of the thermostat or water supply regulat
ing valve.
which the iron is placed in non-ironing position,
said control means being operative, when said
manually-positioned member is positioned to per
mit opening of the valve, to close said valve upon
said element engaging said support, and to open ,
Also, while in the embodiments illustrated, the 70 said
valve upon said element disengaging said
end 14 of the rod 64 and the end ‘99 of the lever
support, said control means being operative to
90 both project in a generally rearward direction
said valve independently of the position of
so as to be operable when the iron is stood up
said element when said manually-positioned
on its rear end, ‘it is within the scope of myv in-'
vention to so construct the actuating levers that 76 member is positioned for closing the valve.
3. A steam iron including a steam generator, a
valve for supplying water to said steam genera
tor, means for controlling operation or said valve,
said means including a valve-actuating lever mov
able into a ?rst position, in which said valve is
closed, and into a second position, in which said
stmcted and arranged in relation to said lever
that, when said iron is placed in a non-ironing
position on a support and said one end of said \
movable member engages said support while said
lever is in said second position, said other end of
said movable member will engage and move said
valve is open and from which position said lever
lever in valve-closing’ direction su?lciently to close
may be moved in valve-closing direction'su?iy
said valve, but notpast the dead center vof said
ciently to close said valve without said lever mov
spring, whereby, when said iron is lifted o? said
ing into said ?rst position, an overcenter spring
and said one end of said movable member
operative when saidlever is moved in either direc 10 support
is disengaged from said support, said movable
tion past dead center of said spring to biassaid
member is biased away from said lever, and said
lever to said first or said second position, and a
spring returns said lever to said second position
movable member carried bysaid iron and having '
' one end thereof disposed outside the body of said
iron and the other end thereof adapted to engage 15
said‘ lever, said movable member being so 0011- .
to reopen said valve.
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