Патент USA US2070710код для вставки
Feb. 16, 1937. F~ ¿_ CLARK 2,070,710 STEAM DISCHARGE PREssING DEVICE Filed Jan. 3, 1935 ' "aff @Ziff/f ff. ff. LM ooooooddo @,oooooloo] 2,070,710 Patented Feb.16, 1937 UNITED STATES PATENT AOFFICE 2,070,710 " STEAM mscnAnGE PaEssrNG DEVICE Frederick J. Clark, Buffalo, N. Y., assignor to _ Steam Pressing Iron Company, Buffalo, N. Y. Application January 3, 1935, Serial No. `253 10 Claims. (Cl. 38-77) This invention relates to improvements in pressing irons of that type which are provided with means such, for example, as an electric heat ing element, for heating the iron and with a 5 steam chamber in which water or wet steam is easily cleaned out; also to provide a steam gen erating device which will insure the quick and - complete conversion of any water into steam; also to provide desirable steam discharge control l means for the device; and also to provide a de heated by the iron heating means to furnish steam for discharge at the pressing face of the iron for moistening or steaming the material be sirable pressing and steam discharge device which has the other features of improvement and ad vantage hereinafter described and set forth in ing pressed; the claims. l ISome goods are spotted or discolored by con tact with water and it is therefore important that steam-discharge irons shall be constructed so aS to insure that the steam will be in a superheated or dry condition when discharged against the goods being pressed, and so as to prevent the pos sibility of any wet steam or water issuing from the steam discharge orifices ofthe iron. ' At tempts have been‘made to prevent the possibility of spotting' or injuring goods by water in the use .,0 of steam’l discharge pressing irons, by employing irons which are supplied with steam from a dis tant steam generatoror boiler, such irons being provided with means for superheating the steam, and provision being made for preventing any water of condensation from the steam from pass ing to the steam discharge orifices of the iron. Such irons, however, necessitate an installation including a boiler or generator with ñexible steam hose leading to the iron, and other more or less 30 complicated or elaborate equipment, making such . . In the accompanying drawing: Fig. 1 is a longitudinal, sectional elevation of an electrically heated steam discharge iron em bodying my invention. Fig. 2 is a sectional plan view thereof on linev 2_2, Fig. 1. 15 » Fig. 3 is a sectional plan view thereof on line 3_3, Fig. l. . Fig. 4 is a front elevation of the iron. Fig. 5 is a detail section, enlarged, of the- re-4 movable gauze roll and cap for the bore contain 20 ing the roll. Figs. 6 and 7 are sections on line 6-6 and ‘I-'I respectively, Fig. 5. I The preferred embodiment of the invention is illustrated in the drawing in connection with 25 an electric pressing iron of known construction which comprises a bottom‘p'late I0 and a body II above the same, both of suitable metal, an electric heating elementv I'2 interposed between the bottom plate I0 and body II, a cover I3 en irons objectionable or impractical for use in some closing the body Il` and heating element, and a establishments. Because of such reasons, many handle I4 for the iron carried by arms rising from the cover I3. As shown, the metal body users prefer the irons in which the steam is gen erated in or at the irons themselves from water supplied thereto. An objection to these irons, 30 II is above and secured to the bottom- plate I0 by screws I5 which clamp or secure the electric 35 3' however, is that the steam generating chambers element I2 between the bottom plate and body or passages in the irons become clogged or fouled with lime or other scale or impurities deposited or settling from the water which soon interfere II, and the cover is secured in place by a screw I6 passing through the top of the cover and screwed into'a threaded 'hole in the body II. I1 40 with the eñicient or proper operation of the iron represents the terminals'or studs for releasably 40 unless removed at frequent intervals, and the. connecting the heating element I2' and electrical previous constructions of such irons make it dif conductor, and I8 the u_sual thermostat arranged ñcult or impractical to properly rid them of the 'in va cavity in the bottom of the iron for con scale or deposits. 45 ' The objects of my invention are to provide a » steam discharging pressing iron in which the steam is generated from the water supplied to the iron but which is -of a novel construction which will insure the proper superheating or dry 50 ing of the steam and prevent the possibility of discharge of any water from the iron; also to construct the iian so that it can be. -used with eitheswater or steam supplied thereto; also to construct the iron so that the water or steam chambers or bores thereof can be quickly and trolling the temperature of the iron. The con struction of the iron as thus far described is 45 that of a known electrically heated pressing iron. My invention is not concerned with the elec trical features of the iron, which may be of the usual and suitable construction, and being well known, further description thereof isunneces 50 sary. The body II of the iron is chambered to re~` ceive water for conversion into steam by the heat from the heating element. Preferably, for this purpose, the body II is drilled to form two 2 2,070,710 straight bores 20 and 2| which extend forwardly tom plate from one or another edge of the plate in the body || from its rear end andconverge so that all of these passages can Ybe‘readily drilled toward and arejoined by a chamber 22 in the ' in the body or bottom plate. The end of each front portion of the body. This chamber 22 is of the several bores at the rear or side edge of preferably of circular shape in plan and extends the’ body or bottom plate may be suitably closed, into the body | I from the upper face thereof, thus as by a‘screw plug or stopper, 31 representing the _being adapted to be readily formed by drilling or plugs for closing the outer ends of the several boring. The bores 20 and 2| and chamber 22 all bores in the -bottom plate. The body || being located directly above the communicate and may be considered as different 10 portions of the same chamber. Although the heating-element I2, is effectively heated thereby, water is admitted to the rear end of the bore 20 and the heat is utilized to convert into steam and steam is generated in this bore, and passes any water in the bores 20 and 2| and‘chamber 22 therefrom through the chamber 22 and bore 2| in the body | l , and the bottom plate I0 being ar on its way to thev steam discharge orifices in the ranged directly beneath the heating element, is 15 pressing face of the iron, as presently explained, also hea-ted thereby to the temperature‘necessary the two bores 20 and 2| and the chamber 22 are for pressing and also for drying or super-heating ~ all heated so that the chamber 22 and bore 2| _ the steam during its passage through the bores will act to furtherl heat and dry any steam gen erated in the first bore 20 and also to convert into 20 steam any water which may pass into them from the ñrst bore 20. A top or cover 23 Which closes the upper end of the chamber 22, may be remov-` ably secured in place as by a nut 24 screwed on ‘ the threaded upper ,end of a stud 25 which is 25 Ascrewed or fixed in a hole in the bottom of the chamber 22 and extends out through a central hole in the cover 23. A suitable packing gasket clamped betweenthe rim of the cover and the shouldered rim of the chamber 22 provides a 30 steam-tight joint between the cover and the chamber 22. If needed, a packing washer can also be placed beneath the nut 24. Water is ad mitted to. the rear end portion of the b_ore 20 under control of a supply valve 26, hereinafter 35 described, which is „connected to a nipple 21 com in the bottom plate, so that only dry or super h'eated steam will issue from the discharge per forations in the bottom plate. 20 , In order to more thoroughly and eiiiciently heat the water and convert it into steam in the bores 20 and 2| and prevent condensation of water from the steam, and also to facilitate the 25 removal from these bores of any scale or sedi ment deposited from the water and thus prevent the clogging of the bores,- a~roll or_cylinder of wire gauze, preferably made by rolling up fine mesh brass wire gauze into a roll of s‘everal turns or layers o-f the gauze, extends into each of the 30 bores 20 and 2| through its open rear end. Each of these gauze rolls is of a diameter adapting it to be' easily inserted into and removed from the bore 20 or I2 I, and of a length for its outer end to extend beyond the` bore into a hollow screw cap 35 municating with the bore 20, and is provided with or member 40 which closes the outer end of the a water inlet fitting 28' adapted for connection bore. As shown, this cap screws ontova nipple 4| with a ñexible water supply hose or, pipe, not screwed into the threaded outer end of the vbore and through which the gauze roll extends. 'I‘he The bottom plate I0 of the iron is provided screw cap projects outwardly from the rear end 40 with steam passages which communicate with the of the body of the iron, and the wire gauze roll. steam chamber in the body | | of the iron and extends outwardly beyond the end of the body | | from one or more of which steam discharge ori- ' and nipple 4| into- the cavity of the cap. ’I'here ñces or perforations lead to the bottom or press fore, the screw cap can be readily unscrewed and 45 ing face of the iron'. Preferably, as shown,jtwo removed, and when removed, the gauze roll will 45 Straight bores 30 extend forwardly in the bottom ,be left projecting out of the bore beyond the outerl plate ||l from its rear end and connect with two end of the nipple, so that the roll can be readily straight cross bores 3| which extend. obliquely grasped and pulled out of the bore. The gauze into the bottom plate from opposite sides of its roll provides a heat conducting body having an`pointed front end. In addition, the bottom plate extensive surface area, and when the water is is provided with two straight bores 32 which ex admitted to the bore 20, it will fall on and spread tend forwardly'in the bottom plate from itsv -rear o-ut in thin films on the Wires of the gauze and end and connect with oblique cross bores 3|,l and will be prevented-by the gauze from lying-in drops these two longitudinal bores 32 are jointed by a or pools in the bore. Therefore, the Water- will 55 transverse bore 33 which connects with a vertical be quickly converted into steam in the bore 2|! 55 taper bushing or nipple 34 extending up through ‘or, in case too great a volume of water is admitted - the heating element l2 and connecting at its up to the bore, if any water passes as liquid from the per end with a transverse bore 35 in the body | |. bore 20 into the other bore 2|, -i't will likewise Bore 35 intersects or connects with. the steam spread out on or over the gauze roll or cylinder 60 chamber 2| in the body so'that steam can pass >in the latter bore, and all of thewater will beì 60 >from the rear portion of the chamber 2| 'through converted'into steam before it passes from the shown. ' _ _ the passage 35, vertical nipple 34 and bores 33 and'32 in the bottom into the oblique bores 3|. Small discharge perforations or oriilces 36 extend 65 from the passages 3|, and also preferably from the connecting passages 30 through the bottom plate to the' pressing face thereof for discharging `the steam at the pressing face of the iron. Thus, the passages 20 and 2| in the body of rear-end portion ofthe bore 2| to the distribut ing bores in the bottom plate of the iron. Fur thermore, _scale or sediment deposited or settling from the water will collect on one orthe other of the gauze rolls, and since these are readily re movable, as explained, they can'be frequently removed and dislodged by 70A the iron are formed by straight bores extending , object. The intoithe body from its rear end, and the trans or sediment, any scale or sediment thereon easily tapping the gauze rolls against an gauze rolls, freed from the scale 70 then can be quickly and easily re verse passage 35 is formed- by a straight bore ex- „ placed in ~the iron and their eilicien'cy thus main tending into the body- from one side edge thereof, and likewise the passages in the bottom plate are tained and the accumulation of the scale or sedi- » ment in the boresprevented. formed by straight bores extending in_to the bot cility with which the gauze rolls can be removed Because of the fa 'mi 3 - 2,070,710 and replaced, they can be frequently removed without objectionable labor or loss of time to clean them and the bores, and there is therefore not the probability of the scale or sediment being allowed to ,accumulate in the bores sufficiently to interfere with the eilicient generation of the steam and operation of the iron, as occurs in the use of irons which cannot be so easily cleaned. Also, the gauze rolls will not become cemented in 10 the bores by the accumulation and baking of the scale, as happens in previous constructions, in which somewhat analogous elements have been employed in the steam passages, but in which they are left inaccessible when the passages are 15 opened, so that the elements cannot be readily removed. Because of the greater inconvenience and labor in removingsuch elements in the prior constructions, they-are allowed to remain longer in the irons, often until they become cemented in thev passages, thereby making it practically'im possible to remove them or, if they can be re moved, the use of the implement necessary for the purpose breaks or mutilates the elements so as to render them unñt for reuse. These diffi culties are eliminated by the Vdescribed construc - tion, in which lthe caps 40, when removed, leave the gauze rolls projecting from the bores so that they can be grasped and pulled out. The chamber 22 can be readily opened and '30 cleaned out by removing its top cover. Since the steam will be superheated and thoroughly dried in its passage through the bore 20, chamber 22 and bore 2| before entering the steam passages in the bottom plate I0, these will not become fouled set screw, the opening movement of the valve is controlled by the adjustment of the set screw. and by first setting the set screw so as to deter mine the extent to which the valve can be openecL, the valve can be quickly opened to such extent simply by moving the lever until itis arrested by the set screw. The valve will always be opened the same amount so long as the adjustment of the set screw remains unchanged, and when the set screw has once been set to determinev the ex 10 tent of opening of the valve, the valve can be quickly opened just this amount without the exer cise of care or judgment on the part of the user of the iron, it being simply necessary for hlm to move the lever until it is arrested by the set' screw. 15 In this way the amount of the water delivered to the steam generating chamber, when the valve is opened, can be regulated with precision, as re quired, and the amount of water delivered will be always uniform whenever the valve is opened. If 20 more or less water is required, this can be -effected simply by adjusting the set screw to control the extent of opening of the valve. As shown, the lug 49 in which the set screw 48 turns projects from a bearing bracket 50 secured 25 to the front arm of the handle i4 of the iron, said lug havinga split intersecting the threaded hole for the set screw and a screw 5| by which the split portion of the lug can be drawn together to grip and securely hold the set screw in its adjust 30 ments. Preferably, a finger wheel 52 is fixed, as byy a nut 53, to the front end lof the valve rod 45 and the valve actuating arm 46 is adjustably secured on the hub of the finger wheel, as by 'Y and will not require cleaning out under normal ' clamping the split inner end- ofthe arm on the hub by a screw 54. Thus, the arm 46 can be loos conditions. However, should this become neces sary, the removable screw plugs afford access to ened and the valve adjusted in or out by turning the wheel 32 and the arm again fixed to the wheel. the passages. ' The water supply valve 26 is preferably a needle 40 valve having a rotatable screw needle with a con ical inner end cooperating with a small hole or seat in the inner end of the valve casing and com municating with the inlet fitting 28 for regulat ing the flow through the valve. The needle rodl 45 45 of the valve projects out of the valve casing through a suitable packing gland or box and extends forwardly of the iron above the cover I3, and has fixed to its forward end an operating arm or lever 46 which extends upwardly and inwardly toward the front end of the handle I4 of the iron so that the button or knob 41' at the free end of the lever is located in convenient position for op eration by the thumb of the hand grasping the handle of the iron to> open and close the valve 26. 48 represents a set screw which passes through and turns in a threaded hole in a bracket or part ’ 49 located adjacent the front supporting arm for ‘ the handle |4»of the iron. This set screw is lo cated so that its inner end is adapted to be en 60 gaged by and serve as an adjustable >stop for the actuating lever 46 of the valve. The valve is closed by a downward movement of the lever 46 and opened by an upward movement of the lever, and the opening movement of the lever is limited by engagement of the lever with the set screw 48. Thus, by adjusting the set screw in or out, the opening movement of the valve can be arrested when the valve has been opened to a Agreater or less extent, thereby regulating, as de 70 sired, the amount of water admitted by the valve, each time it is opened, tothe steam generating This construction enables the valve to be set, if necessary, so that it will be opened a greater or 40 less amount when arrested by the set screw, and also enables adjustments of the valve to compen sate for wear. ` . While the pressing iron or device constructed, as illustrated in the drawing and hereinbefore described, is especially intended and desirable for use when the steam for discharge at the pressing face is generated in the heating chambers 2D, 2I'~ and 22 or in one or another thereof from water in liquid form suplied to the chamber 20, the 50 described construction is also capable of use with ~steam instead of water supplied to the heating chambers of the‘îlevice for superheating or dry ing. Therefore, the device is' adapted for use in establishments equipped with steam generat ing installations. I claim as my invention: 55 f Y 1. A pressing device comprising a body having a chamber with an opening thereinto, a closure for said opening movable to uncover the opening, 60 means for heating water in said chamber to gen erate steam, andan element in said chamber for receiving deposits from the water, said element being of a size and positioned in the chamber to project out through said'opening when said clo 65 sure is moved to uncover the opening and being removable from the chamber through said opening. ‘ 2. A pressing device comprising a body having a straight passage extending thereinto from one face of the body, a closure for the outer end of chamber\\20 of the iron. Since the valve is closed - said passage -movable to open said -outer end, means for admitting water to said passage, means wardly or ‘away from the set screw, and is opened for heating the Water in said passage to generate by movement of its .actuating lever 46 down 75 by movement of the lever upwardly or toward the steam, and a straight element which occupies 75~ , 4 2,070,710 said passage for receiving deposits from the water and is of a length to f project out beyond the passage and is removable through said outer end when the latter is opened for removing deposits outer end thereof and is removable through said from the passage. outer end when opened. 8. A pressing device comprising a body having two straight passages extending thereinto from . 3. A pressing device comprising a body having a steam passage extending thereinto from a vface »_ one end of the body, a chamber joining the inner . of the body, a closure for the outer end of said c ends of said passages to enable circulation from passage movable to open~said outer end, means for heating said chamber, and a wire gauze ele 10 ment which occupies said passage and is of a length to project out beyondthe outer end there of and is removable through said outer end when the latter is opened. y 4. A pressing device comprising a body having 15 a chamber with an opening thereinto, a hollow cap,I closing said opening and movable to uncover the opening, means for heating wa'ter in said Y chamber to generate steam, and an element which . occupies said chamber for receiving deposits lfrom 20 the water and is of a length to project;- through said opening into the cavity of said hollow cap and is removable from the chamber through said opening when said capis moved to uncover the c opening. - 5. A pressing device comprising a body having a straight passage extending thereinto from one face of the body, a hollow cap which closes the Vouter end of said passage and is movable to - open said -outer end, means for heating said 30 passage and a wire gauze roll which occupies said passage and is ofv a length to project beyond the outer end thereof into the cavity of said hol~ one passage to the other, a removable top cover for said chamber affording access to the cham ber forcleaning, a closure for the outer end of each passage movable to open- said end fo’r clean ing out .the passage, means for heating said pas sages, means foradmitting ñuid to one of said passages, straight bores in said device adjacent the pressing face thereof each extending into the device from a face thereof, said bores communi eating with each other and with the second of said passages, a plug closing the outer end of each of said bores, and steam discharge oriñces leading from ones‘or- more of said bores to the pressing face of the device. ' 9. A pressing device comprising ‘a body and » a\ bottom plate, a heating element between the body and bottomv plate for heating both, two, straight bores extending into the body from one end thereof, means for admitting ñuid to one of said bores, a chamber joining the inner ends of said bores to enable circulation of iluid from said one bore to the second bore, removable closures for the outer ends of said bores whereby 30 the bores can be opened for cleaning them, oblique bores extending into said bottom plate low cap, so that when said cap is moved to open the outer end of the passage the end of the roll from its side- edges, longitudinal bores extend-l 35 will project out of the passage and can be grasped ' ing into said bottom plate from its rear end and » to pull the roll out of the pas-sage. 6. A «pressing device comprising a> body having communicating straight passages extending thereinto from one end of >the body, a closure for 40 the outer end of each passage movable to open -said end, means ffor heating said passages, means for admitting ñuid to one of said passages, and means for discharging steam from another of said passages, and a wire gauze J element 45 which occupies each passage and lis of a length to project out beyond the outer end thereof and is removable through said outer end when the latter is opened. , _, connecting with said oblique bores, a transverse bore connecting said longitudinal bores and com municating with said second bore in said body, and steam discharge oriñces leading from’said oblique bores to the face of the bottom plate. 10. A pressing device comprising a body and ' 40 a bottom plate, a heating element between the body and bottom plate for heating both, -two straight bores extending into the body from one end thereof, means for admitting fluid to one of said bores, a, chamber joining the inner ends of said bores to-enable circulation of fluid from said one bore to the second bore, removable closures 7. A pressing device comprising 'a body having ‘_ for the outer ends of said bores whereby thev bores can be opened for cleaning them, oblique 50 two straight passages extending thereinto from one end of the body, a chamber joining the inner bores extending into said bottom plate from its 50 side edges, longitudinalbores extending into said rends of said passages to enable circulation from bottom plate from its rear end and connecting one passage to the other, a top cover for said chamber movable toA afford access to the chamber 55 for cleaning it, a closure for rthe outer end of each passage movable to opent-«said end, means for heating said passages, means for admitting fluid to one of said passages, and means for dis charging steam from another of said passages, 60 and a -wire gauze element which occupies each with said oblique bores, steam discharge orifices leading` from said oblique and longitudinal bores to the face of the bottom plate, a transverse bore in the bottom plate communicating with said second bore in said body, and bores extending longitudinally in the bottom plate from said transverse b'ore to said oblique bores. , FREDERICK J. CLARK. 55 '