US1749597A - Sole plate for laundry irons - Google Patents

Description

March 4, 1930. M. w. MCARDLE 1,749,597

SOLE PLATE FOR LAUNDRY IRONS Original Fiied Feb. 2, 1921 Zz Veg-$01". .Ziigess fihae] l's Z-Zorzg e g .5

a specific for mm W. ICARDLE,

SOLE PLATE FOB origin! application mea'rj 2,1927, Serial no.

01' CHICAGO, ILLINOIS LAUNDRY IRONS 185,889. Divided and this application filed February 5, 1927. Serial No. 166,135.

This application is a division of my application Serial No. 165,269, filed February 2, 1927.

The purpose of the invention is to provide f construction of sole plate for a laund and the like which shall be economical construction and eflicient in operation for the purposes of a laundry iron by reason of having the Working face of material susceptible of smooth finish and high polish Without grinding and shall have also without grinding smoothly rounded corners instead of the acute angled corners which result from the machine finish necessary to give 5a proper surface to the working face and beveled edges of a cast metal sole plate. It consists in the elements and features of construction shown and described as indicated in the claims.

' In the drawings Figure 1 is a plan view of the sole plate for a'laundry iron constructed according to this invention.

Figure 2 is a section at the line 22 on Fi re 1.

igure 3 is a section on an enlarged scale at'the line 3-3 on Figure 1.

Figure 4 is a view similar to Figure 3 showing a modification.

The sole plate shown in the drawings comprises a sheet metal shell, A, and a metal filler indicated as to its entirety by reference letter B; the shell, A, is preferably made of sheet steel formed as a stamping from a blank whose contour can be understood from the drawin s and which is first stamped to form a perip eral flange, 5, extending around all sides of the web, 5, whose under surface constitutes the working face of the iron, the flange being originally erect, i. e., substantially perpendicular to the web, as seen in dotted line in Figures 2 and 3. The filler consists of a plurality or series of die cut plates, 1, 2 and 3, assembled one above another in the order of their numeral indicaplate, 4, all said plates having the general orm of the working face of the iron, thelowermost plate, 1, being horizontally dimensioned slightly less than the inner surface of the web, 5, of the shell so that when it is lodged in the shell symmetrically with respect to said inner surface area a narrow marginal area of said inner surface is exposed all around said plate. Each of the plates, 2, 3 and 4, successively, super-imposed in their numerical order above the plate, 1, and especially the top plate, 4, is less in horizontal dimensions than the plate next below it, and leaves exposed all around it a narrow margin of the surface of said next lower plate.

The plates, 1, 2, 3 and 4 have each two holes, 6*, positioned for registering respectively with the corresponding holes of the other plates when the plates are assembled in their order symmetrically as to the contour with each other, and they are all secured rigldly together in such assembled relation y means of hollow rivets, 6, in the registered holes, 6, and clinched down flush with the outer surfaces respectively, upper and lower, of the top and bottom plates of the series. These hollow rivets are interiorly threaded at 6 for affording means of securement of the super-imposed elements of the complete iron, including the handle, such super-imiposed parts not being shown in the drawings.

When assembled and secured together as described and as an entirety lodged in the shell, A, the erect flange of the shell is flexed inwardly into encounter with the upper corners of the periphery of the plates, 1, 2 and 3, which, it will be understood, stand in position defining an incline to which the inwardly flexed flange is conformed by such flexure, and the upper margin of the flange is folded down to substantially horizontal position onto the upper margin of the plate, 3, in the rabbet which results from the lesser dimension of the top plate, 4, lodged symmetrically upon the plate, 3.

It will be seen that this method of formation results in smoothly rounded corners encompressing the entire working face and the desirable beveled edge for the sole plate as an entirety, both said desirable features being obtained without machining or grinding, and by the very cheap means of producing the plates of the filler, viz, die-cutting from metal plate.

It will also be seen that the formation of the plates of the filler with peri heral edges perpendicular to their faces an graduating them in respect to horizontal dimensions as described for giving a slope to the edge of the filler as an entirety, to which slo the flange of the sheet becomes conforms when it is plates reaches the flange almost entirely by radiation, the areas in contact for conducting heat from plate to flange being almost negligible, whereby the heat of the plates is conserved for conduction to the working face of the iron and not wasted at the flange when it is re uired only for a small fraction of the work 0 the iron.

In Figure 4 the filler is shown consisting of a single plate, 7, which is die-cut for g ving it a peripheral edge perpendicular to its faces and which is horizontally dimensioned enough less than the inner surface of the web, 5, of the shell so that the flange, 5, when flexed inward into contact with the upper corner of that perpendicular edge, has the proper angle for giving the sole plate the desirably beveled edge; and it will be observed that there is enclosed between the web and flange of the shell and the per endicular edge of the filler plate like triangu ar air space as pointed out in the plural plate form WhlCh serves the same desirable function as described in respect to said plural plate form.

I claim 1. A sole plate for a laundry iron comprising a peripherally flanged sheet metal shell and a metal filler for the same including a plate having its peripheral edge substantialy perpendicular to its faces and its horizontal dimensions less than those of the inner surface of the bottom web of the shell, the flange of the shell extending inwardly in inclined position into contact with the upper corner of the periphery of the plate for retaining the same symmetrically positioned in the shell and enclosing the air spaces in the shell around the periphery ofthe filler.

2. A sole plate for an electric iron and the like comprising a peripherally flanged sheet metal shell, the outer surface of whose web bounded by said peripheral flange constitutes the working face of the iron and a series of plates corresponding in contour to the inner surface of said web, and slightly less in horizontal dimensions than said surface and having peripheral edges perpendicular to their faces, said plates being assembled superimposed one above, another in said shell the peripheral flange of the latter being inc 'ned inwardly with respect to said bottom web.

into contact with the upper corner of the periphery of a superimposed plate of the ser1es and overlying the peripheral margin thereof.

3. A sole plate for a laundry iron comprising a perip erally flanged sheet metal shell and a metal filler for the same including a series of relatively thin plates assembled successively one above another in the shell, all having their horizontal dimensions somewhat less than those of the inner'surface of the bottom web of the shell, the flange of the shell beinginwardly inclined contacting laterally with and overhanging the upper corner of an upper plate of the seriesfor retaining the series within the shell, all the plates of the filler havin registering a ertures, and rivets hollow rom end to en in said apertures clinched onto the surfaces of the top and bottom plates of the filler and tapped for securing the superimposed elements of the non.

4. A sole plate for a laundry iron comprising a peripherally flanged sheet metal shell and a metal filler for the same including a series of thin plates each corresponding in horizontal contour to the cavity of the shell, the lowermost plate of the series having its horizontal dimensions slightly less than those of the inner surface of the bottom web of the shell, and each successively superimposed plate of the series having similar less horizontal dimensions than the plate next below it, the flanges of the shell being inclined inwardly with respect to the bottom of the shell contacting with the upper corners of the superimposed plates for retaining them symmetrically positioned in the shell.

5. In the construction defined in claim 3,

the filler comprising a plate above the plate of the series on whose margin the flange of the shell is clinched, said margin constituting substantially the excess of the dimension of said plate of the series over the one above it; whereby there is formed a rabbet at the top margin of the filler in which the clinching margin of the flange is seated.

6. A sole plate for a laundry iron comprising a peripherally flanged sheet metal shell and a metal element constituting a filler for the same, said element including a series of thin plates assembled successively one above another in the shell and graduated in respect to their corresponding horizontal dimensions each upper plate slightly less than the plate next below it, said plates being assembled symmetrically for exposing the marginal area of each lower plate outside sembled symmetrically for exposing the.

marginal area of each lower plate outside the periphery of the next plate above it, the flange of the shell being inclined inwardly at a suitable angle for contacting successively with the upper corners of several plates of the series, and hollow interiorly threaded rivets extending through the entire: filler and clinched above and below the same, said rivets being positioned in the area of the filler suitably for securing superimposed elements of the iron and for engaging the handle member.

8. A sole plate for a flat iron including a plurality of laminae of like contour difi'ering from each other slightly in horizontal dimensions but having apertures positioned similarly with respect to the peripheral contour for registering with each other as the laminae are assembled, one lamina having its peripheraledges substantially perpendicular to its flat faces, said laminae bemg assembled in the order of their sizes with the lar est at the bottom, and a shell consisting of a cttom Web and marginal flanges inwardly inclined for enclosing the assembled laminae and engaging their peri heral edges.

In testimon whereo I have hereunto set my hand at hicago, Illinois, this 3rd day of February, 1927.

MICHAEL W. McARDLE.

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