Патент USA US2411199код для вставки
Nov. 19,}945. ‘ R,a|, FELVER' ' 2,411,199 STEAM IRON Filed Aug. 19, 1943 2 Sheets-Sheet 1 FIG. 1 . ‘ i . as " INVENTOR -RICHARD LF'ELVER. BY. 7?/, MM ATTORNEY Nov. 19, 1946. 2,411,199 R. l. FELVER STEAM IRON Filed Aug. 19, 1943 2 Sheets-Sheet 2 (F1537. IIIIIII1 IIIl I: ‘I I II Il 27 2.3 CO v, V.“ . a 6 "W3 , ..%. “4 a F \G. .l 9n /W m , 0. m6..NMHm? Du MFA/m R . . Patented Nov. 19, 1946 2,411,199 UNITED STATES PATENT OFFICE’ 2.41;,‘199 STEAM IRON 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 2 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 ner. 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 iron. ' 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 produce. .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 ture. , 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 thereof. closed; 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 40 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 2,411,199 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 _ 4 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 had 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 52 when 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 solepiate. . 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 steam. through an opening in a bracket 5! which is ?xed 35 to the iron and which serves as an abutment for linen. V 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 tion. ' . ' 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 55 etc. . 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 2,411,199 6 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. valve 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, carried 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. the 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 close 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 2,411,199 . . ? , 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. ' » RI " "All I. FELVER.