USRE16886E - walker - Google Patents

Description

Feb. 21, 1928. R 16,886

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Original Io. 1,591,058, dated December all, 1884, serial lot-572,691, fled August 4,- 1928. Application for I reiuue fled June 12, 1928. Serial No. 115,668.

The present invention relates to a new .and improved flat or'pressing iron and has for its mainob'ect the production of an electrically heate iron provided with means I for generating steam and for 's'upplying steam to the fabric which is being pressed.

Another object of the invention is to rovide a flat iron of the class described w ich.

- shall be simple, strbn and compact; and

ighest desirable results in operation.

Other objects of the invention relate to the provision of minor parts and to details of construction, all of which -will be more l clearly set forth in the annexed specification.

With the above objects .view the invention resides in the parts and combinations of arts hereinafter described and particuso lar y set forth in the appended claims. In order that my invention may be clearunderstood I have illustrated the same in'.

the accompanying drawings, wherein Fig. 1 .shows an electrically heated fiat.

18' iron in side elevation, partsbeing shown in section. Fig. 2 is a plan view of the bottom or operating plate of the iron.

Fig. 3 shows a second. form ofconstruction of the flat iron in-a side elevation-and Fig. 4 shows the upper face of the bottomplate.

- Fig. 5 is a sectional elevation of a third .form of construction and. '3 Fig. 6- shows the bottom plate from above.

The iron shown in Figs. 1 and 2 comprises abottom plate '22 into which two screw threaded bolts 23 are screwed. On thebottom plate 22 rests a sheetmetal plate 4 24; and 'on'said plate 24 an electric heating I element-2 isarranged.v The heating. element 2 is held in positionby alplate 25 and by nuts, 26 screwed onsaid bolts 23. Above the bottom plate 22 a cover. 14 is arranged 5 which is .firmly held by. nuts on the bolts 23: A hollow handle 6.is fastened to the bolts 23. Said handle'i's adapted to receive the water to be vaporized. The handle 6 is provided with a filling-in screw 16 and with man adjustable needle valve 5'by means of which water passes from the handle 6 to a tube 8 in predetermined quantities according to the setting of the valve 5. The tube 8 passes through the plates'24, 25 and the a lug of known construction.

steam produced may be regulated.

electric heating element 2. The iointsare rendered tight by soldering to prevent the access of water-and steam to the element 2.-

The tube 8 ends above a recess 27 of the plate'22. From the said recess 27 bores 7 pass to the lower face of the bottom plate- 22. The bores 7 are arranged at regular distances apart in a line at an oblique angleing element 2.is electrically connectedto the studs 19 by well known means. 'The. studs 19 are insulated and are adapted to receiveno ration the needle valveafter t e electric heating element has-been connected to'the current supply. The water passing into recess 27 is vaporized and the steam generated escapes through the bores 7 on to .the fabric over which the iron is moved to and fro, the. amount of steam .ap-

plied being regulated by the needlev valve 5. Inthe construction shown in Figs. 3 and '4 the tube 8 ends in a chamber 29 screwed into the bottom plate. 22. From "thechamber 29 in which the water is evaporated a tube 13. passes to a bore 11 and from the bore 11 a number of'nozzles 7 lead to an oblique groove 10in the workingface of the late 22. On'

the heating element. 2 rests a ac'king body distributed. Between 5 is opened 15 which is firmly held by the'bolts' 23, on

which the, eover 14 and the handle 6 are fastened. The, handle 6 which is a water container 'is provided with aneedle' valve 5 by means of which the flow of water and the The flatiron-a's shown in Figs. 5 and 6 comprises a bottom plate 1 on which a layer of' insulating 'materlal 3 isplaee'd. On the electric heating element 2 resting. on said Y layer 3 a backing body 15 is arranged-which 4 is screwed down by nuts 26 on bolts 23. On

the bolts 23' a cover 14 and a handle 6 are fastened b meansof nuts 4. Heat insulating was ers 9 are arranged between. the

cover 14 and the handle 6. The handle 6 forms a water container, and is provided duced which mi ht with a filling-in screw 16 and with a needle valve by means of which water from the handle 6 is fed to a tube-8 arranged within a .larger tube 13. The latter is .ti htlyfastened to the cover 14 and to the p ate 3 and leads the water to arecess 27 in the top of the plate 1. From the recess 27' an oblique row of holes 7 lead to a groove 10in the lower face of the plate 1., Between the holes 7 and the lower aperture of tube 13 a ridge or baffle 28 is provided which retains the water issuing from the tube 13 inthe recess 27 to get it vaporized. The electric heating element 2 is electrically connected to the plug 19 in the well known manner. i.

In all the constructions shown the heat of the electric heating element is well applied and the water and steam have to am the hottest part fithe iron just before 1t leaves the nozzles 7. A perfect evaporation takes place and ,no'water can possibly remain within thewater way: and no rust is-procarried ofi by the steam and soil a, fabric. One of the important features of my invention is the formmg of steam by the evaporation of the water directly in or on the bottom plate. As the water is led to the evaporation recess or chamber a small quantity at a time, the steam is formed rapidly, and uniformly, and furthermore it ma es possible the use of a very small evaporation chamber, so that at no time can steam accumulate in dangerous quantities, and there is never present the possibility of an explosion in the iron with consequent injury to the operator or destruction of the device. Should the needle valve be 0 ened to such an extent that more water wou d enter the evaporation chamber than could be evaporated, it would merely mean that heated water would escape through the bores 7.

"To make more efiective the flmctioning of the small and constricted evaporation cham-' her, I employ a rib 28 in the forms of the device shown in Figures 1. 2. 5 and 6, which prevents the direct flow of the water .to the bore 7 and reads'the water out over the entire availa le, efiective evaporating su r face.

In all the constructions described above care is taken that no water or steam can pass on to the heating element 2-and if the valve 5 should lealr the water passes off freely through the bores 7.

In all forms of my invention illustrated, it will be noted that thedrip pipe for conveying water to the evaporating chamber is of relatively small diameter and does not contact with any wall of the chamber so that the water drips or falls from the end of thedrip pipe into direct contact with the metal surface which is at the hottest part of the hot.metal surface it is instantly va ropes of water which cannot be vaporized will es-- cape; and secondly, an excess of water tends to cool the iron. In a device of this character it is extremely desirable to utilize aheating element which does not require an excessive amount of current but only suflicient to give the required temperature to the iron. Furthermore, by dripping the water ontlzeg r or converted into steam similarly as flash boilers and there is no accumulation of water within the vaporizin chamber. An other important feature 0 the inventioni's the provision of a groove 10 inthe lower face of the bottom late of the iron with. which all of the outlet orifices 7 communicate, so that these orifices cannot be cut ofl by contact with the goods being ironed, and also the groove e(permits the vapor to evenly distribut throughout the face of the iron due to'the oove which extends transversely and pre erably diagonally of the iron. v

I wish it well understood that I doxnot limit my invention to hand operatedirons as .my invention may be applied to ironing machines as well. Moreover the shape an arrangement of the water container maybe made otherwise than as shown and described without departing from the invention.

0 What I wish to secure by'Letters Patent 18:

1. The

. thereon, an electrical heating element on the flat iron, a backing element on said heatin element, a water reservoir forminga han e and having a valved duct arranged to discharge on the iron, the latter being rovided with ducts leading to its face, an Its deta'chably securing said iron heatingelement, ba'cking element, cover and reservoir handle together. 2. A pressing iron includin a bottom plate having a vaporizing cham 'directl associated with the u per face thereof, an having outlets form -in the bottom plate and communicating with the lower face of the bottom plate, a handle on the iron constituting a water reservoir, a drip pipe operatively connected to the reservoir, and tarminating within the vaporiz' and spaced from the walls of chamber, a ridge in the bottom of the vapo chamber between the end of said pipe and said outlets, and a needle valve controlling 12s the flow through said drip pig: I, 3'.A pressing iron inclu 'g a bottom its upperface, a main reservoir carried by I reservoir and sai i e connected with said 0 amber having its outlet end spaced from the walls of the va orizing chamber, whereby liquid is dropped into the iron, a drip 5 the chamber, and a heating element on the bottom plate, said chamber having vapor outlets communicating with the'lower face of the bottom plate.

4. A ressing iron, including a bottom 10 plate, a eating element on the bottom plate,

a water reservoir carried by the iron, said bottom plate having a vaporizing chamber bores.

THE ELDEC CO. INC., [1..s.] Assignee of Otto Walker, Deceased. A. E. Bonn, Seay Treas.

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