US1995035A - Sadiron sole plate - Google Patents

Sadiron sole plate Download PDF

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Publication number
US1995035A
US1995035A US655932A US65593233A US1995035A US 1995035 A US1995035 A US 1995035A US 655932 A US655932 A US 655932A US 65593233 A US65593233 A US 65593233A US 1995035 A US1995035 A US 1995035A
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US
United States
Prior art keywords
shell
sole plate
bosses
expansion
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
US655932A
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English (en)
Inventor
Michael W Mcardle
John W Lynch
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.)
Chicago Flexible Shaft Co
Original Assignee
Chicago Flexible Shaft Co
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
Application filed by Chicago Flexible Shaft Co filed Critical Chicago Flexible Shaft Co
Priority to US655932A priority Critical patent/US1995035A/en
Priority to DEC47901D priority patent/DE620449C/de
Priority to US684879A priority patent/US2042953A/en
Application granted granted Critical
Publication of US1995035A publication Critical patent/US1995035A/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
    • D06F75/38—Sole plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • Y10T29/49917—Overedge assembling of seated part by necking in cup or tube wall
    • Y10T29/49918—At cup or tube end

Definitions

  • This invention relates to sadirons and has particular reference to a new and improved sole plate for electric sadirons.
  • a purpose of the invention is to provide a composite sole plate having an outer shell of sheet metal and a body or filler which may be of a different metal and which is shaped and secured to the shell ina manner to compensate for diff rences in thermal expansion between the parts I and to hold the ironing surface of the shell firm- 1y against the body.
  • Another object of the invention is the provision of a composite sole plate having structural characteristics insuring satisfactory performance in service
  • Another aim of the invention is the provision. of a sole plate having means for preventing the improper assembly thereof whereby to insure proper performance in service.
  • Another object of the invention is to provide a composite sole plate wherein the shell 'is of steel or other hard sheet material and the body is of a light weight material such as aluminum, and the parts are so shaped as to compensate for the efiects of the difference in thermal expansion of the parts upon the curvature of the ironing surface of the sole plate.
  • Fig. 2 is a section on the line 2-2 of Figure 1;
  • Fig. 3 is a longitudinal section through one of the bosses
  • Fig. 4 is a top view of the shell with the body in place showing the shell after the preliminary bending thereof;
  • Fig. 5 is'a section on the line- 5-5 of Fig. 4
  • Fig. 6 is a top view ofv the shell and body after the preliminary comer forming operations, showing in dotted lines the manner in which the dies form the corners;
  • Fig. 7 is a section through the point of the shell and body parallel to the ironing. surface showing the relationship of the parts in Fig. 4;
  • Fig. 8 is a section on the line 88 of "Fig. 7;
  • Fig. 9 is a section similar to Fig. 7 showing the relationship of the parts after the die operation shown in Fig. 6;
  • Fig. 10 is a section on the line 10-10 of Fig. 9;
  • Figs. 11 and 12 are sections parallel to the ironing surfaces through one of the heel corners showing the relationships of the parts prior and subsequent to the die operations shown in Fig. 6;
  • Fig. 13 shows the sole plate after the flange of the shell has been completely ironed in agains the side walls of the body
  • Fig. '14 is a section on the line '14-14 of Fig.13;
  • Fig. 15 is a top view of the completed sole plate showing the upper edges of the flanges pressed down against the top of the body and the fillister screws inserted;
  • Fig. 16 is a section on the line 16-16 of Fig. 15;
  • Fig. 17 is a section through the sole plate parallel with the ironing surface thereof after the heating step of the method
  • Fig. 18 is a top view of a modified form of sole plate
  • Fig. 19 is a section onthe line 19-19 of Fig. 18.
  • the present invention deals with the production of a composite sole plate as distinguished from those in which the plate is made from a single piece of metal usually cast to the desired shape.
  • the common practice has been to cast the sole plate from gray iron or similar metal. The bottom, side wall, and a portion of the top were then ground to remove the irregularities incidental to casting and to. further shape and smoothen the casting. Following the grinding it was necessary to thoroughly polish the metal to a high degree of smoothness prior to the plating operations.
  • the aluminum plate had the further disadvantage that it was not easily plated, and that the plating, when formed, had a tendency to be cracked and chipped off in service by distortion of the soft metal beneath.
  • Our composite sole plate possesses the essential advantages of each of these prior plates and eliminates the disadvantages thereof. This is accomplished by making the body portion of aluminum or other light metal and the shell of steel or similar sheet metal. In this manner, we obtain a light sole plate, the outer surface of which is of steel of sufllcient thickness and hardness to withstand hard usage without scratching or deforming. By using sheet steel for the shell, we eliminate most of the grinding and polishing operations and obtain a surface which is easily plated. Furthermore, because of the substantial elimination of the grinding and polishing steps, and because of the ease of plating, we are able to produce the composite sole plate at a lower cost than those of the prior art.
  • One phase of the invention contemplates a method of manufacturing a composite sole plate wherein a sheet metal blank is drawn to produce a shell, means are attached to the shell for securing a body firmly against the bottom of the .shell, a filler or body is inserted in the shell, and
  • a blank such as shown in 'dotted lines at 21, is first out of sheet metal.
  • This blank is then formed by suitable forming dies to a shell having a base 22 andv flanged peripheral walls consisting of side walls 23 and 24 and a rear wall 25, the flange being continuous andthe walls being connected at the point 26 and at the heel corners 2'7 and 28.
  • the next step consists in securing to the base of the shell a plurality of wide bottomed bosses such as shown to advantage in Fig. 3.
  • Each of these bosses is provided with a flanged bottom 30 having a plurality of projections 30 arranged to function in the welding of the bosses to the shell.
  • These bosses serve for the attachment of the body to the base I of the shell and also for the attachment to the sole plate of the superimposed portions of the iron.
  • bosses may be welded by means of spot welding to the inside-,of the shell and bosses 29- should be spaced from the side edges of the shell and arranged therealong in the manner shown in Figure 1.
  • bosses 29 are somewhat larger than the bosses 29 and serve to receive bolts for attaching the thereby facilitating the transfer of heat from the body to the base of the shell.
  • bosses should have a relatively wide area in contact with the base of the shell so as to prevent distortion of the shell upon thermal expansion of'the sole plate, as will presently be more fully discussed.
  • a body 34 is then positioned on the base 22 of the shell within the flange periphery.
  • This body may take a wide variety of forms within the contemplation of the invention. In this instance, it consists of a casting of one piece, though it will be understood that the invention is by no means limited toa one-piece casting since a laminated body such as shown in U. S. Patents 1,749,596 and 1,749,597 issued March 4, 1932, to one of us may also be used.
  • the body may advantageously be of aluminum or aluminum alloy to provide a light weight sole plate, though here again it will be understood that any suitable metal may be employed.
  • the side walls of the sole plate are intended to slope inward from bottom to top and consequently the side walls 35 and 36 of the body are correspondingly sloped and terminated at their upper edge.
  • this marginal recess being of a thickness to receive the upper edge of the shell flange so as to provide a substantially smooth upper surface on the completed sole plate and to permit a clamping action of the shell upon the body.
  • the body may also be provided with an opening 38 for the reception of the thermostatic element of the iron, not shown, so that the thermostatic element may be placed in close proximity to the ironing surface of the sole plate.
  • a slot 39 extends from the opening 38 through the heel of the body separating the rear end of the body into two arms which may move toward and away from each other in response to the thermal changes of the iron.
  • the lower surface of the body is curved, laterally and longitudinally, as best shown in Fig 5,' this curvature being such that when the shell is tightly formed around'the body and the sole plate heated to the operating temperature, the difference in the rate of expansion of the shell and the body will cause the lower surface of the sole plate to become less convex and approach planeness, it bein'g -prefe erable that the surface still remain slightly convex in order to insure against a possibility of the surfacebecoming concave on heating and also because the iron appears to operate better under such circumstances.
  • the body 34 is provided with openings 41 for the reception of the bosses 29 and with openings 42 for the reception of the bosses 31, 32 and 33.
  • the openings 41 and 42 are counterbored at top and bottom, as shown at 43 and'44, the counterbore 44 being of a thickness to just receive the wide flanged bottom of the bosses so that when screws are inserted in the bosses man cannot tighten the screws sufficiently to draw in the shell or loosen the'weld, nor can thermal expansion of the body accomplish the same thing.
  • the openings 41 and 42 and the counterbores 43 and 44 are of slightly larger size than required for the reception of the bosses and screws, thereby permitting a certain amount of movement between the body and the shell and allowing sufilcient room to take care of a different rate of expansion of the various parts.
  • the body is slotted from its periphery inward, as shown at 45, 46 and 47, the slots being adjacent to each corner of the body and openings 48 are positioned in the slots intermediate their ends, these openings being tapered inward from top to bottom of the body,
  • protrusions on the body such as shown at 49 and 51, to prevent distortion of the side walls of the body when the corner forming dies press the flange of the shell against the body, these protrusions flattening out during this die operation to provide a smooth side wall, as shown a in Figs. 9 and 12.
  • the sides of the sole plate be at an acute angle with respect to the ironing.
  • the body is inserted in the shell with the bosses in the openings 41 and 42.
  • the assembled sole plate is then subjected to a die operation to bend the flanged side walls 23 and 24 from the position shown in Figure 1 to theposition shown in Fig. 4, theside walls of the body providing lateral support during the forming operation, and pins preferably on the dies being inserted in the openings 48 of the slots to prevent these slots from collapsingor closing during the die operation.
  • the openings 48 are tapered to facilitate the entry of the pins.
  • This die operation also serves to partially form the corners of the shell, as shown in the-latter figure. Care is taken, however, to prevent the corners from being bent up too far by the insertion of wedges between the body and the flange at the corners.
  • the relative amount of forming of the sides and the corners is shown to advantage in Fig. 5.
  • Fig. 6 The result of the next die operation is shown in Fig. 6 and the manner of performing this operation is shown diagrammatically by the dotted lines representing portions of the dies.
  • the dies operate at each corner bringing the lower part of the flange up against the corners of the body. 'At the same time, the
  • protrusions 49 and 51 are flattened out-or ironed into the body by the force of the die operation.
  • Figs. '7 and 8 show the point of the sole plate prior to this-die operation
  • Figs. 9 and 10 show the point subsequent to the die operation clearly showing the manner inwhich the'sheet metal flange is pressed firmly against the side walls of the body.
  • Figs. 11 and 12 show one of the heel corners before this die operation and subsequent thereto.
  • Fig. 17 wherein the numeral 52 indicates the space adjacent to the heel corners of the iron resulting from the distortion of thebody by the heat treatment, whereas the numeral 53 designates the space near the point of the iron formed in the same manner.
  • Fig. 17 is merely illustrative of the principle-involved and .is not to be construed as a limitation as to the precise relationships between the body and the shell which corrects for the difference in expansion between the two metals.
  • Figs. 18 and 19 show an additional way in which the base of the shell may be held firmly against the bottom of the body.
  • a curved slot 55 is formed in the body substantially evenly spaced'from one edge of the body throughout its length. If desired, this slot may be caused to intersect the periphery of the body as shown at 56 to form one of the desired expansion slots.
  • An'angle iron strip 57 is welded, or otherwise attached, to the upper surface of the base of the shell and projects upward through the opening 55, the body being provided with a countersink 58 for the purpose of receiving one side of the strip. The upper edge of the strip is then bent over into a countersink 59 on the top side of the body, thus holding the base of the shell firmly up against the body.
  • the opennig 55 be of such width as to permit the strip to rest at a slight angle: with respect to the vertical, as shown in Fig. 19, so that 'upon expension of the body the strip may spring sidewise.
  • the upper edge of the strip may advantageously be slotted, as shown at 61, to give greater elasticity.
  • a strip 62 is secured in a vcomplemental slot 63 Spaced from the opposite.
  • similar strips 64 and 65 may bepositioned in the well 38 and clamped structure for differences in thermal expansion between the body and the shell. This difference in expansion will, in part, be accounted for by the difierencein temperature normally existing between the body and the shell, the heating element of the iron normally being supported di rectly on the body whereas the shell is exposed to the cooling effects of the air. For this reason, the body will normally be at ahigher temperature than the shell, and consequently will expandto a greater extent when the iron is in service.
  • the sole plate is preheated to a certain Under. such circumhigher temperature to allow a safety factor for overrunin temperatureof the iron.
  • a certain Under. such circumhigher temperature to allow a safety factor for overrunin temperatureof the iron.
  • bosses which are welded or attached to the base of the shell. It will be seen that these are provided with flanged or disc-like bottoms so that they cover arelatively large area on the bottom 10 of the insert. Likewise, the body is counterbored to a depth justsufiicient to receive this disc-like bottom of the flange. Thus, when the body thickens through expansion, the bottoms of the bosses merely draw up against the body, the strain 15 caused by the expansion thus being taken between the fillisterhead of the screw and the base of the boss.
  • a composite sole plate for sadirons of the type having means for controlling normal operating' temperature comprising -a body, and a sheet steel shell covering, the lower face of the. body and formed over the bottom edge and sides of the body,-the body being slotted along its edge so that at no time in the normal operation within the. temperature contrplled range will the corners of the. body exert undue pressure outwardly against said formed side walls of the shell.
  • a composite sole plate for sadirons compr ing a body of metal having inwardly inclined sides, and a shell of sheet metal covering the lower facev of the body and having sides formed jtorted at. the corners so as to partially close said slots and leave a space between the side walls of said shell and said body to compensate for the diiference in expansion between the shell and the against said sides of the body, the co-eflicient of body expansion of the body metal being. greater than that of the shell, and the body having slots pre'-.
  • a body of material-having inwardlyinclinedsides a shell ofsheet metal covering the lower face 'of the body and having sides formed against said sides of the body, the coeilicient of expansion of the body material being greater than that of the shell, and means uniting the shell bottom to the body over a substantially central area, the body having slots which compensate for thermal expansion between said central area and the corner portions of the body whereby at no, time in the normal operation will the comers of the body exert undue pressure outwardly against the shell.
  • a composite sole plate for sadirons of the type having means for controlling the service temperature thereof comprising a body and a sheet steel shell formed thereon, the body having a greater coeflicient ofexpansion than the shell and the bottom of the body and shell having a convex curvature. longitudinally and 1 laterally when cold, the difference in the rate of expansion of the body and-shell causing theconvexity to be reduced in the service temperature of the iron.
  • a soleplate for sadirons comprising a body
  • the body being of a material having materially greater coefficient of expansion than the shell.
  • a sole plate for sadirons comprising a body, a sheet metal shell having flanged sides formed on said body, said body having a plurality of diagonally positioned slots extending inwardly from the periphery thereof. the body being disin expansion between metal I 9.
  • sole plate for sadirons comprising a body,
  • a sheet metal shell having a flange formed against the side walls of the body, a plurality of wide base bosses attached to the base of said shell and extending into the body, said body having openings for the reception of said bosses and abutments for the bases thereof, and a plurality of screws 1 in said bosses for securing and said body together.
  • a sole plate for sadirons comprising a body, a sheet metal shell formed thereon, a plurality of the base of .saidshell angle strips attached to the base of said shell intermediate the'sides thereof, said body having slots for the reception of said strips, said' strips being bent over against the top of said body to clinch the base of said shell against said body.
  • a composite sole plate for sadirons' having a body and a sheet metal shell formed thereon, means for securing the base .of the shell against the body comprisingspaced bosses weld-- ed'to thebase, said bosses being receivable in bores in the body, and means for preventing the base at-the point where the bosses are welded thereto from being drawn out of-alignment by thermal expansion of the body.
  • a composite sole plate for sadirons having a body and a sheet metal shell formed thereon, means for securing the base of the shell against the body comprising spaced b'osses having wideflanges welded to thbase, said bosses being receivable in bores in the body and the flanges being receivable in counterbores in the body .01 a thickness substantially equal to the thickness of, the flanges, and screws in the .bores' receivable in the bosses to' draw the base of the shell against the boihr.
  • a composite sole plate for sadirons comprising a body having a lower surface and a sheet metal shell formed thereon having a base in contact with said surface, said body and shell being formed of metals of different coefllcients 'of expension, and having a curvature when cold, the curvature-being such that the difference in the rate of expansion brings said surface and base plane substantially at the service temperature of said iron.
  • a composite sole plate' for sadirons comprising a body of, metal high in aluminum having a convex lower surface, a sheet metal shell formed thereon having a base held against said convex surface, the curvature of said surface being such that the difference in thermal expansion of said members cause said surface and said base to become substantially plane at the service temperature of the sole plate.
  • a composite sole plate for sadirons comprising a body, a sheet steel shell covering the lower i'ace'of' the body and formed over the sides of the body. and means over a central area of the body and shell uniting the two, the body having slots 'for preventing it from exerting sufficient pressure outwardly against the shell to crack the body.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cookers (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
US655932A 1933-02-09 1933-02-09 Sadiron sole plate Expired - Lifetime US1995035A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US655932A US1995035A (en) 1933-02-09 1933-02-09 Sadiron sole plate
DEC47901D DE620449C (de) 1933-02-09 1933-05-20 Grundplatte fuer elektrische Buegeleisen und Verfahren zu ihrer Herstellung
US684879A US2042953A (en) 1933-02-09 1933-08-12 Method of making sole plates for sadirons

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US655932A US1995035A (en) 1933-02-09 1933-02-09 Sadiron sole plate
DEC47901D DE620449C (de) 1933-02-09 1933-05-20 Grundplatte fuer elektrische Buegeleisen und Verfahren zu ihrer Herstellung

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US1995035A true US1995035A (en) 1935-03-19

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552818A (en) * 1948-09-08 1951-05-15 Landers Frary & Clark Electrically heated flatiron
US2807700A (en) * 1953-02-02 1957-09-24 Sunbeam Corp Lightweight composite sole plate and method of making the same
DE1138487B (de) * 1960-03-22 1962-10-25 Siemens Elektrogeraete Gmbh Buegeleisen
US3213518A (en) * 1964-02-27 1965-10-26 Saito Shigetoshi Method of making a ball bearing assemblage
FR2705374A1 (fr) * 1993-05-14 1994-11-25 Bosch Siemens Hausgeraete Semelle pour un fer à repasser électrique.
EP0712954A1 (de) * 1994-11-18 1996-05-22 ARIETE S.r.l. Verfahren zum Herstellen von Bügeleisen mit Stahlbügeleisensohlen
US5937552A (en) * 1997-01-10 1999-08-17 Hp Intellectual Corp. Iron soleplate with a soleplate bottom cover
USD463892S1 (en) 2001-02-15 2002-10-01 Hamilton Beach/Proctor-Silex, Inc. Iron guard
ES2203349A1 (es) * 2003-11-21 2004-04-01 Bsh Krainel S.A. Plancha.
WO2025071884A1 (en) * 2023-09-29 2025-04-03 Conair Llc Clothing iron
USD1082198S1 (en) 2023-09-29 2025-07-01 Conair Llc Soleplate for clothing iron

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112225C2 (de) * 1981-03-27 1983-12-29 Bayerische Motoren Werke AG, 8000 München Verfahren zum Herstellen von Formwerkzeugen
DE4422090A1 (de) * 1994-06-24 1996-01-11 Braun Ag Kantenform bei einem Bügeleisen
DE4422089C2 (de) * 1994-06-24 1999-12-09 Braun Gmbh Verfahren zum Herstellen eines Bügeleisens, sowie ein mit dem Verfahren hergestelltes Bügeleisen

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552818A (en) * 1948-09-08 1951-05-15 Landers Frary & Clark Electrically heated flatiron
US2807700A (en) * 1953-02-02 1957-09-24 Sunbeam Corp Lightweight composite sole plate and method of making the same
DE1138487B (de) * 1960-03-22 1962-10-25 Siemens Elektrogeraete Gmbh Buegeleisen
US3213518A (en) * 1964-02-27 1965-10-26 Saito Shigetoshi Method of making a ball bearing assemblage
FR2705374A1 (fr) * 1993-05-14 1994-11-25 Bosch Siemens Hausgeraete Semelle pour un fer à repasser électrique.
EP0712954A1 (de) * 1994-11-18 1996-05-22 ARIETE S.r.l. Verfahren zum Herstellen von Bügeleisen mit Stahlbügeleisensohlen
US5937552A (en) * 1997-01-10 1999-08-17 Hp Intellectual Corp. Iron soleplate with a soleplate bottom cover
USD463892S1 (en) 2001-02-15 2002-10-01 Hamilton Beach/Proctor-Silex, Inc. Iron guard
ES2203349A1 (es) * 2003-11-21 2004-04-01 Bsh Krainel S.A. Plancha.
ES2203349B2 (es) * 2003-11-21 2005-02-01 Bsh Krainel S.A. Plancha.
WO2025071884A1 (en) * 2023-09-29 2025-04-03 Conair Llc Clothing iron
USD1082198S1 (en) 2023-09-29 2025-07-01 Conair Llc Soleplate for clothing iron
US12467196B2 (en) * 2023-09-29 2025-11-11 Conair Llc Clothing iron

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Publication number Publication date
DE620449C (de) 1935-10-28

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