US2441586A - Steam iron - Google Patents

Steam iron Download PDF

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Publication number
US2441586A
US2441586A US577277A US57727745A US2441586A US 2441586 A US2441586 A US 2441586A US 577277 A US577277 A US 577277A US 57727745 A US57727745 A US 57727745A US 2441586 A US2441586 A US 2441586A
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US
United States
Prior art keywords
cam
valve
arm
stem
iron
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US577277A
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English (en)
Inventor
Eldred O Morton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL64659D priority Critical patent/NL64659C/xx
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US577277A priority patent/US2441586A/en
Priority to GB4637/46A priority patent/GB608017A/en
Priority to FR930790D priority patent/FR930790A/fr
Application granted granted Critical
Publication of US2441586A publication Critical patent/US2441586A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
    • D06F75/18—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron the water being fed slowly, e.g. drop by drop, from the reservoir to a steam generator

Definitions

  • My invention relates to a steam iron of the type which includes means for supplying water to a steam generator provided within the iron and communicating with the ironing surface i thereof, and meansfor'regulating the temperature of said iron and the rate of ow of water to said steam generator.
  • One object of my invention is to produce an improved iron of the type set forth.
  • the iron In ironing different kinds of fabrics, the iron must be maintained at different degrees of heat and the amount of steam supplied to the fabrics being ironed should preferably be varied with different types of fabric. Other things being equal, the amount of steam required varies in accordance with the degree of heat.
  • y vA further object of my invention is to produce an improved control ⁇ means by which the generation and supply .of steam may be interrupted or resumed without varying the adjustment to which said control means may have been set.
  • a still further object of my invention is to produce an improved structure in which the means for regulating the heat of the iron may be calibrated before it is assembled in the iron.
  • a still further object is to produce an improved assembly whereby all parts of the iron may be dismantled for cleaning or servicing without affecting the calibration of the means regulating the heat of the iron and whereby most parts of the iron can be dismantled without affecting the calibration of means regulating the supply of steam.
  • a still further object is to produce a compact structure which is inexpensive to manufacture and assemble.
  • Fig, 1 is a view, partly in side elevation and partly in vertical section, of a steam iron provided with control means embodying my invention
  • Fig. 2 is a compositeperspective view of the principal parts of the control means
  • Fig. 3 is a fragmentary top plan view of vthe iron shown in Fig. 1 with the handle and control means'removed;
  • Fig. 4 is an enlarged viewof the central portion of Fig. 1;
  • Fig. 5 is a fragmentary top plan view showing the position of the'steam supply control when the iron is used as a steam iron;
  • Fig. 6 is a view similar to Fig. 5, showing the position of the same parts when the iron is used as -a dry iron;
  • Fig. 'I is an enlarged section on line VII- VII of Fig. 1;
  • Fig. 8 is an enlarged vertical sectional View of a modified form of construction of the cam shown at the bottom of Fig. 2.
  • FIG. 1 there is shown'an electric iron I0 having a soleplate l2, a liquid reservoir or tank Hand handle I6 which are secured to each other and to the soleplate I2 in a manner which does not form a' part of the present invention and is neither shown nor described.
  • the tank I4 is illled with liquid through a tube, not shown, the inlet end of which is accessible upon movement of a plug 20 upwardly from the handle I6.
  • the soleplate is heated by. a conventional heating element 22 which is energized by suitable electrical conductors, not shown.
  • the energization of the heating element is controlled by a thermostat seated in a well 24 formed in the soleplate l2.
  • the thermostat is of the unit type in which all component parts are assembled in an integrated structure which can be applied to or removed from the soleplateof the iro'n as a whole, or without dismantling any of its parts.
  • the thermostat includes a-spring switch arm 26 carrying a movable contact 28, a bimetal element 30, andan adjusting lever 3 2.
  • the switch arm,'bimetal elementand adjusting lever are carried by a rivet or the like 34.
  • the bimetal elements 30 and 32 are connected to the rivet 34 by means of a spring hinge member 35.
  • the rivet 34 is carried by a supporting plate 3B which also ⁇ carries a bushing 38and a fixed contact 40.
  • the structure of the thermostat is also such that it may be calibratedb'efore it is assembled to the soleplate of the iron.
  • the thermostat is regulated by an adjusting st em l42 which threadedly engages the bushing 38 and which carries'an insulated pin 44 adapted bimetal element with respect to the switch arm 26.
  • the stern 42 passes through a sleeve 46 which extends through the tank I4. 'I'he upper and lower ends of the sleeve 46 pass through openings in the upper and lower walls of the tank, and are brazed or otherwise secured to the rims of said openings in fluidtight manner. If desired, the
  • ' sleeve 46 may be provided with beads 48 which form abutments for the top and bottom walls of the tank, so that the sleeve acts as a stay bolt to keep the top and bottom walls of the tank properly spaced and to strengthen the tank construction.
  • the soleplate I2 is also provided with a steam generating chamber which is adapted to receive liquid from the tank I4 to be changed into steam.
  • the steam generated in the chamber 50 ilows through passages, not shown, to ports 52 through which it is discharged onto the fabric being ironed.
  • the top' of the chamber 50 is closed or bridged by a plate 54 which has an opening through which a bushing 56 may be inserted.
  • the bushing 56 is provided with a iiange 58 which rests on the plate 54. If desired, a gasket 58 is used to produce a seal between the flange 58 and the plate 54.
  • 'Ihe bushing 56 has a bore 60 which terminates in a valve opening or oriilce 62.
  • the upper end of the bushing 56 threadedly engages the lower end of a sleeve 64 which extends through the tank I4.
  • the upper and lower ends of the sleeve 64 passes through openings in the top and bottom of the tank and are secured to the rims of said openings in iiuidtight manner.
  • the upper and lower ends of the sleeve 64 are shouldered as at 66 so that the sleeve acts as a stay bolt with reference to the walls of the tank.
  • Liquid from the tank I4 flows into the steam generator 50 through openings 68 formed in the sleeve 64 adjacent the bottom of the tank, through the bore 60 in the bushing 56, and out through the oriilce 62.
  • the oriiice 62 is controlled by a valve 10 carried by a valve stem 12 extending through the sleeve 64 and into the bushing 56.
  • the lower end of the valve 10 is preferably provided with a reduced extension 'II which is adapted to move into and through the orifice 62 with the movement of the valve 10 so as to eject salt deposits and other foreign matter from theoriiice.
  • 'I'he upper portion of the valve stem 12 is provided with an enlarged head or collar 14 disposed in the upper portion of an enlarged bore 16 formed in the sleeve 64.
  • the lower end of the bore 'I6 is tapered and forms a conical seat for packing 18.
  • a spring 80 confined between the collar 14 and a washer 82, compresses the packing 18 to prevent leakage of liquid from the tank past the valve stem.
  • the cover I8 includes a continuous, substantially vertical skirt portion 84, the bottom edge of which rests upon a margin of the soleplate, a horizontal ledge 86 forming a support for the handle I6, and a top, horizontally-disposed bridge or interconnecting portion 88 which extends transversely of the center of the iron and which is provided with a lateral tab 80.
  • the remainder of the top of the cover is preferably cut out for lightness and economy.
  • Ihe bridge portion 88 and the tap 80 are provided with openings 82 and 84, respectively, through which the thermostat adjusting stem 42 and the valve stem 12, respectively, extend.
  • the thermostat adjusting stem 42 islongitudinally knurled and carries and engages a correspondingly knurled cam 80.so that the cam rotates with the stem but does not move vertically therewith.
  • the cam 86 includes a hub 88 having a reduced upper end whereby a shoulder
  • valve stem 12 threadedly engages anopening
  • 08 is provided with a downturned lug I I4 adapted, in one position of the arm, to ride on a progressively rising surface
  • 08 is further provided with an upturned lug
  • 22 comprises a body portion
  • the body portion of the lever has an opening
  • 26 passes through an arcuate slot
  • 22 and cam 86 arebiased downwardly against the thrust washer
  • 40 is provided with reduced, de-
  • thermo- Assembly The upper and lower parts of the tank and the sleeves 46 and 64 are assembled asshown, and
  • the upper and lower parts of the tank are welded or otherwise suitably secured, in fiuidtight relation, to each other and to the adjacent portions of the sleeves 46 and 64,.
  • the bushing 58 is then threaded to the lower end of the sleeve 64 and the packing 18, washer 82, spring 80 and collar 14 are assembled on the stem 12.
  • 08 is next threaded onto the valve stem 12, and the valve stem is inserted into the sleeve 64 with the .lgwer end thereof extending into the bushing
  • the unitary, Previously calibrated thermostat and its adjusting stem are assembled to the soleplate, and the tank, carrying the assembled water valve, is lowered onto the soleplate so as to cause the thermostat adjusting stem to pass upwardly through the sleeve 46. In this position,
  • the cam Il is preferably so positioned on the thermostat adjusting stem that the ilat, low portion of the cam registers l with the downwardly deflected lug I
  • the cam and the thermostat adjusting stem may be indexed in any suitable manner.
  • the cam may be moved in either direction, through arange equal to the length yci the low portion'l of the cam. without aectlng the position of the arm
  • the cam may, therefore, be moved to an ofi position, in which the heating element of the iron is not energized, or it may be moved to an on position in which the heating element is energized, while the oriiice B2 remains closed.
  • the cam is adjusted to a position in which the temperature of the ⁇ iron will be suitable for ironing a certain class of fabrics such, for example, as wool.
  • 00 is now adjusted on the valve stem 12 so that engagement of the lug I4 with the adjacent portion of the cam will open the 1971CZ and permit water to flow into the steam generating chamber at a rate which will insure vaporization of such water by the heat at which the iron is maintained by the particular setting of the cam.
  • the locking sleeve H0 is next threaded onto the upper end of the valve stem to retain the arm
  • the surface of the cam is such that, with the arm
  • 22 is slipped over the thermostat adjusting stem 42', with the upper end of the stem projecting loosely through the opening and the body portion
  • 22 is so positioned that the forked end
  • 22 is thus movable arcuately about the axis of the thermostat adjusting stem and is operative to move the arm
  • spring or other positioning means may be used to bias the arm
  • 2 is slipped over the locking sleeve
  • the inished cover I0 is next lowered over the assembled tank and soleplate with the upper ends of the valve stem 12 and the thermostat adjusting stem 42, passing through thev openings 04 and 02, respectively, with the ends of the spring
  • 2 biases the valve ,ste-m downwardly, and the spring
  • 22 is moved to the position marked Steam in which the lug
  • the cam surface will be presented to the lug
  • the structure of the cam and the adjustment of the water valve are such that when the cam is adjusted to maintain the ironat a very low temperature at which water will not be readily changed into steam, the valve 10 will close the oriilce 62 even though the lug
  • the thermostat when the low portion of the cam registers v with Ithe lug H4, the thermostat may be either in its oli position in which the heating element is not energized, or in ⁇ a position in which the heating element is energized but the iron is maintained at ⁇ a'relatively low temperature. In this position o! the parts. the oriilce 62 will be completely closed by the valve 10. It will thus be seen that no water can be delivered to the steam generating chamber when the iron is cold, or is at a relatively low temperature, and that the amount of water delivered to the steam generator is varied according to the increase or decrease in the temperature at which the iron is maintained.
  • 08 When it is desired to use the iron as a steam iron, and if the iron is cold, as for example, after a long period of non-use, the arm
  • 50 is then turned to adjust the thermostat to the position in which the iron brought up to and maintained at a predetermined degree of heat.
  • 22 When the iron has been suiiiciently heated the arm
  • the supply of steam may be cut oi altogether or may be turned on and automatically adjusted, during any ironing operation, by merely moving the arm
  • the handle I6, the cover i8 and the tank Il may all be dismantled one from the other and from the soleplate i2 without affecting the calibration of the water valve or of the thermostat.
  • the stem 12 can be completely withdrawn from the sleeve 64 and returned into position therein, without varying the calibration or adjustment of the valve, as long as the relation of the arm
  • the bushing 56 can be disconnected, cleaned and the adiustment of the valve.
  • 02, and the tank Il may all be removed and the unitary thermostat assembly may be entirely disconnected from the soleplate, and all of the parts mentioned may be reassembled without affecting the calibration of the thermostat, it being understood that care must be taken to pre'- vent particles of dirt from getting under the cam 06 or under the washer
  • a tank il for containing the water or other fluid
  • the invention is equally ap-l plicable to an iron in which the tank is omitted and water or other iiuid is supplied to th'e interior of the bushing from an externalsource.
  • a strap or the like can be used for supporting the washer
  • Fig. 8 there is shown a modified form of cam 06a which may be used interchangeably with the cam 06 forming part of the embodiment illustrated in Figs. 1 to '1.
  • the cam 96a is identical with the cam 90 except that it is provided with a ridge or raised portion
  • 50 is preferably circumferentially coextensive with th'e cam face lili and is of a constant height measured from the flat lower surface of the cam. Ihe upper surface of the ridge
  • 50 is in the path of movement of the lug Ill of the arm
  • 00 raises the valve stem 12 toa maximum valve opening position, thus permitting momentary and sudden increased flow of water through the orifice 82 regardless of the setting of the cam 88a.
  • the momentary and sudden increase of flow of water through the orifice 62 serves to flush the orifice, thus dislodging relatively loose particles of salts or other foreign matter that may have lodged in the orifice and which would not have been dislodged by th'e gradual and slow ilow of water through the orifice which takes place when the orifice is opened gradually to the extent dictated by the portion of the cam surface on which the lug
  • An electric iron comprising a soleplate, a heating element therefor, a thermostat for controlling the energization of said element, means providing a steam generating chamber, means providing an orifice for delivering water to said chamber, a valve for controlling said orifice, -a stem for adjusting said valve, means biasing said valve-to-close said orifice, a stem 4for adjusting said thermostat, a cam carried by said thermostat adjusting stem and having an aperture through which said thermostat adjusting stem passes, said cam being slidable longitudinally of said thermostat adjusting stem but being locked for joint rotation therewith, the surface of said cam having a gradually rising portion, and a follower arm carried by said valve adjusting stem and adapted to ride on said portion to move said -valve to open said orifice to an extent determined by the rise of said portion.
  • valve 9 the surface of said cam includes a flatrecessed portion so arranged that, when saidv arm registers with said flat portion, said valve closes said orifice.
  • An electric iron comprising a soleplate, a heating element therefor, a thermostat for controlling the energization of said element, means providing a steam generating chambena reservoir adapted to contain water to be converted into steam in said chamber, a wall structure deiining an orifice for delivering Water from said reservoir to said chamber, a valve for controlling said oriiice, a stem for adjusting said valve, means biasing said valve adjusting stem to close said orifice, said stem projecting through aA passage extending through said reservoir, a stem for adjusting said thermostat, said stem projecting through a passage extending through said reservoir, a cam ⁇ disposed above said reservoir and having an aperture through which said thermostat adjusting stem extends, said cam lbeing slidable longitudinally of said thermostat adjusting stem, means for locking said cam for joint rotation with said thermostat adjusting stem, and afollower arm secured to said valve adjusting stem and adapted to ride on said cam to vary the position of said valve relative to said orifice with the rotation of said thermostat adjusting stem and
  • An electric iron including a. soleplate, a heating element therefor, means providing a steam generating chamber, means providing an 'oriice for delivering water to said chamber, a thermostat for controlling energization of said element and inclding an adjusting stem for varying the temperature setting of the thermostat, a valve assembly for said orifice including a valve, a valve adjusting stem and a follower arm carried by said valve adjusting stem, a cam having a low surface portion and a progressively rising surface portion, said cam being rotatable with said thermostat adjusting stem, said follower arm being so adjusted relative to said valve adjusting stem that, when said follower arm registers with the low portion of said cam said valve closes said orifice and when said arm rides on the progressively rising portion of said cam, said valve is moved correspondingly to open said orifice, said cam including a raised portion, the upper surface of which is at least as high as the highest point of said progressively rising surface portion,
  • valve assembly for said orifice including a valve, a valve adjusting stem and a follower arm carried by said valve adjusting stem, a cam having a low surface portion and a progressively rising surface portion, said cam being rotatable with said thermostat adjusting stern, sai-d follower arm being so adjusted relative to said valve adjusting stem that, when said follower arm regv isters with the low portion of said cam said valve closes said orifice and when said arm rides on the progressively rising portion of said cam, said valve is moved correspondingly to open said orifice, said cam including a raised portion, the upper surface of which is at least as high as the highest point of said progressively rising surface portion, said raised portion being circumferentially coextensive and disposed adjacent the outer marginal portion of said progressively rising surface portion so that when
  • an electric iron comprising a soleplate, a heating element therefor, a thermostat for controlling the energization of said element, means providing a steam generating chamber, means providing an orifice for delivering water to said chamber, a valve for controlling said orifice, a stem for adjusting said valve, means biasing said valve to close said orifice, a stem for adjusting sai-d thermostat, a cam carried .by said thermostat adjusting stem, said cam having a gradually rising surface portion and a raised marginal portion of constant height, the upper surface of said raised portion being at least as high as the of the gradually rising surface portion engaged opening of said orifice and permit momentary increased flow of water through said orlce.
  • An electric iron including a soleplate, a heating element therefor, means providing a steam generating chamber, means providing an orifice for delivering water to said chamber.
  • said raised portion being so disposed adjacent said gradually rising portion that when said follower arm is moved into or out of engagement with said gradually rising portion, said follower arm will ride on the upper surface of said raised portion to move said valve adjusting stem upwardly and open said orifice accordingly to permit increased flow oi' water through said orifice.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
US577277A 1945-02-10 1945-02-10 Steam iron Expired - Lifetime US2441586A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL64659D NL64659C (enrdf_load_html_response) 1945-02-10
US577277A US2441586A (en) 1945-02-10 1945-02-10 Steam iron
GB4637/46A GB608017A (en) 1945-02-10 1946-02-14 Improvements in or relating to electric steam irons
FR930790D FR930790A (fr) 1945-02-10 1946-07-18 Perfectionnements aux fers à repasser avec production de vapeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US577277A US2441586A (en) 1945-02-10 1945-02-10 Steam iron

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US2441586A true US2441586A (en) 1948-05-18

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US577277A Expired - Lifetime US2441586A (en) 1945-02-10 1945-02-10 Steam iron

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US (1) US2441586A (enrdf_load_html_response)
FR (1) FR930790A (enrdf_load_html_response)
GB (1) GB608017A (enrdf_load_html_response)
NL (1) NL64659C (enrdf_load_html_response)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597763A (en) * 1949-06-24 1952-05-20 Sussman Arthur Steam pressing iron
US2655746A (en) * 1951-04-25 1953-10-20 Gen Electric Unitary steam and temperature control for steam irons
US2690623A (en) * 1948-05-27 1954-10-05 Sunbeam Corp Steam iron
US2710469A (en) * 1952-01-16 1955-06-14 Hoover Co Electric irons
US2713221A (en) * 1951-12-15 1955-07-19 Hoover Co Electric irons
US2786286A (en) * 1953-12-03 1957-03-26 Hoover Co Valve control structure for steam irons
DE1054957B (de) * 1957-03-02 1959-04-16 Rowenta Metallwarenfab Gmbh Elektrisches Dampfbuegeleisen
US2903804A (en) * 1956-10-23 1959-09-15 Merrill M Kistner Steam iron
US5408769A (en) * 1994-05-10 1995-04-25 Black & Decker Inc. Thermostat control for an electric iron
US5606810A (en) * 1996-01-16 1997-03-04 Black & Decker Inc. Wire spacer for a shaft in an electrical appliance
US5799420A (en) * 1997-01-10 1998-09-01 Black & Decker Inc. Steam iron water tank with air trap and gear mounts
US5829175A (en) * 1996-09-20 1998-11-03 Black & Decker Inc. Steam iron with all temperature steam production
WO2011080026A3 (de) * 2009-12-22 2011-09-09 BSH Bosch und Siemens Hausgeräte GmbH Dampfstation mit temperatureinstellmittel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2342653A (en) * 1941-03-08 1944-02-29 Westinghouse Electric & Mfg Co Steam iron

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2342653A (en) * 1941-03-08 1944-02-29 Westinghouse Electric & Mfg Co Steam iron
US2342716A (en) * 1941-03-08 1944-02-29 Westinghouse Electric & Mfg Co Steam iron

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690623A (en) * 1948-05-27 1954-10-05 Sunbeam Corp Steam iron
US2597763A (en) * 1949-06-24 1952-05-20 Sussman Arthur Steam pressing iron
US2655746A (en) * 1951-04-25 1953-10-20 Gen Electric Unitary steam and temperature control for steam irons
US2713221A (en) * 1951-12-15 1955-07-19 Hoover Co Electric irons
US2710469A (en) * 1952-01-16 1955-06-14 Hoover Co Electric irons
US2786286A (en) * 1953-12-03 1957-03-26 Hoover Co Valve control structure for steam irons
US2903804A (en) * 1956-10-23 1959-09-15 Merrill M Kistner Steam iron
DE1054957B (de) * 1957-03-02 1959-04-16 Rowenta Metallwarenfab Gmbh Elektrisches Dampfbuegeleisen
US5408769A (en) * 1994-05-10 1995-04-25 Black & Decker Inc. Thermostat control for an electric iron
US5446983A (en) * 1994-05-10 1995-09-05 Black & Decker Inc. Thermostat control for an electric iron
EP0682141A3 (en) * 1994-05-10 1996-04-17 Black & Decker Inc Thermostat control for electric iron.
US5606810A (en) * 1996-01-16 1997-03-04 Black & Decker Inc. Wire spacer for a shaft in an electrical appliance
US5829175A (en) * 1996-09-20 1998-11-03 Black & Decker Inc. Steam iron with all temperature steam production
US5799420A (en) * 1997-01-10 1998-09-01 Black & Decker Inc. Steam iron water tank with air trap and gear mounts
WO2011080026A3 (de) * 2009-12-22 2011-09-09 BSH Bosch und Siemens Hausgeräte GmbH Dampfstation mit temperatureinstellmittel

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Publication number Publication date
FR930790A (fr) 1948-02-04
NL64659C (enrdf_load_html_response)
GB608017A (en) 1948-09-08

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