US3416513A - Device for securing a heating plate to the top plate of a range - Google Patents

Device for securing a heating plate to the top plate of a range Download PDF

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Publication number
US3416513A
US3416513A US665023A US66502367A US3416513A US 3416513 A US3416513 A US 3416513A US 665023 A US665023 A US 665023A US 66502367 A US66502367 A US 66502367A US 3416513 A US3416513 A US 3416513A
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United States
Prior art keywords
flange
range
plate
heating plate
spring
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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
US665023A
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English (en)
Inventor
Fischer Karl
Goessler Gerhard
Meissner Horst
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.)
MESSRS E G O ELEKTRO GERAETE B
Messrs Ego Elektro-Geraete Blanc U Fischer
Original Assignee
MESSRS E G O ELEKTRO GERAETE B
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Application granted granted Critical
Publication of US3416513A publication Critical patent/US3416513A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated

Definitions

  • ABSTRACT OF THE DISCLOSURE A device for securing a heating plate having an annular flange to the top plate of a range having a hole into which the flange is inserted by means of several spring clamps which are applied from the lower side of the range plate and each of which has one part resiliently pressing against the inner side of the range plate'and another part resiliently pressing in a downward direction against the flange, whereby an overflow or facing ring surrounding and secured to the upper end of the flange adjacent to the heating plate is pressed tightly upon the upper side of the range plate.
  • the present invention relates to a device for securing a flanged heating plate which is provided with an overflowor facing ring to the top plate of a range by resilient clamping means which are applied from below so as to engage upon the annular flange of the heating plate which is inserted into a hole in the range plate, and so as also to press against the lower side of this range plate, whereby the outer edge of the facing ring will be tightly pressed upon the upper side of the range plate.
  • a bracket which bridges the range hole underneath the heating plate and through which a threaded bolt is passed which is secured to the heating plate, and to clamp the ends of this bracket against the lower side of the range plate by tightening a nut on the end of the bolt.
  • this clamping bracket is usually prevented from turning by a pin which is secured to the heating plate.
  • suitable spring means are inserted between the clamping bracket and the clamping nut or the clamping bracket itself is provided in the form of a spring.
  • the present invention provides these clamping means in the form of spring clamps or brackets which are applied on at least two points of the range plate adjacent to the upwardly drawn rim surrounding the hole in the range plate which is covered by the heating plate, and press with one side resiliently against the lower side of the range plate and with another side against the outside of the flange of the heating plate near the free lower end thereof.
  • spring clamps or brackets may be made very inexpensively and of various designs and each of them may be stamped and bent of a single piece of sheet metal.
  • each of the spring clamps comprises a U-shaped part which is adapted to be'fitted from below upon the downwardly extending annular flange of the heating plate and has an extension on one of its arms which is bent outwardly and the end of which engages with a resilient pressure against the lower side of the range plate, while locking detents on the same arm engage into corresponding locking recesses or with locking projections on the flange of the heating plate.
  • each of these sections is either cylindrical or tapers slightly toward the free end of the flange and projects radially over the main outer surface of the flange.
  • the main part of the flange. with a thin wall, while the short thicker sections of the flange are provided with relatively deep and effective locking recesses.
  • These sections on which the spring clamps are applied are made of such a thickness as to permit the locking recesses to be cut to a sufficient depth but without touching the main outer surface of the flange.
  • the thicker sections of the flange of a heating plate of the type to which the invention relates wherein this flange is pressed tightly into an overflow or facing ring which, in turn, is to be tightly pressed upon the upper side of the range plate around the range hole, are preferably designed so that, before the casting of the heating plate is machined, the outer surfaces of these sections are in alignment with and of the same diameter as the upper part of the flange upon which the facing ring is to be pressed so that, when the casing is turned on a lathe so as to cut this part to its accurate diameter for receiving the facing ring, these sections will be likewise cut to this diameter with the exception of the free end of each section which by remaining uncut then forms a radially projecting edge portion for supporting one of the spring clamps.
  • edge portions project radially over the part of the flange which serves as a seat for the facing ring, they do not prevent this ring from being passed over them so as to be pressed upon this seat since the inner wall of this ring will then elastically expand between the sections sufliciently so as to slide over these edge portions.
  • each of the spring clamps which are stamped and bent of sheet metal comprises a U-shaped part which is hooked over the upwardly drawn rim of the range plate surrounding the hole into which the flange is inserted.
  • One side of this U-shaped part has at least one spring arm thereon which is bent outwardly so as to engage resiliently upon the inner side of the range plate and at least one further spring arm which is bent inwardly and at an oblique angle downwardly and presses resiliently against the outer side of the flange of the heating plate which is inserted from above into the range hole.
  • This outer side of the flange may also be provided with a locking recess into which the last mentioned extension of each spring clamp may engage.
  • the heating plate may be inserted in any desired rotary position into the range plate.
  • FIGURE 1 shows a radial section of a part of a heating plate and range plate and of one of the spring clamps which is applied from below over the flange of the heating plate;
  • FIGURE 2 shows a cross section which is taken along the line II-II of FIGURE 1;
  • FIGURE 3 shows a perspective view of one of the spring clamps
  • FIGURE 4 shows a radial section of a part of an unmachined casting of a heating plate, the section being taken between two points on which the spring clamps are to be mounted;
  • FIGURE 5 shows a radial section similar to FIGURE 4, but taken at a part of the flange on which after being machined one of the spring clamps is to be mounted;
  • FIGURE 6 shows a radial section of a part of the finished heating plate between two points on which the spring clamps are to be mounted;
  • FIGURE 7 shows a radial section similar to FIGURE 6, but taken at a part of the finished flange on which one of the spring clamps is to be mounted;
  • FIGURE 8 shows a bottom view of a part of the finished heating plate
  • FIGURE 9 shows a radial section similar t FIGURE 1 of a modification of the invention.
  • FIGURE 10 shows another radial section similar to FIGURE 1 of a further modification of the invention; while FIGURES 11 to 13 show perspective views of three different spring clamps according to the invention as may be applied, for example, in the embodiments according to FIGURES 9 and 10.
  • the heating plate is indicated at 1, its annular flange at 2, the range plate at 3, the upwardly drawn rim surrounding the hole for receiving the heating plate 1 at 4, a shoulder on range plate 4 which extends into the rim 4 at 5, the overflow or facing ring of the heating plate 1 which overlaps the rim 4 of the range plate at 6, and the spring clamps or brackets which clamp the heating plate 1 upon the range plate at 7.
  • the overflow or facing ring 6 of the heating plate 1 which surrounds the flange 2 and supports the heating plate on the shoulder of range plate 3 is formed in the conventional manner by a stamped sheet-metal part of an inverted trough-shaped cross section, the inner wall portion 6a of which is tightly pressed upon the flange 2 and against an outwardly projecting shoulder of the heaing plate itself.
  • the upper part of the relatively thin flange 2 has a larger diameter and wall thickness than the lower part so as to form a seat 2a for the inner wall portion 6a of the facing ring 6.
  • flange 2 of heating plate 1 is reinforced on at least two, but preferably three points underneath the seat surface 2a by sections 2b which serve as points of connection for the spring clamps 7 and the upper outer surface of each of which is formed by the seat surface 2a, while underneath this surface the outer surface of each of these sections 2b projects radially over the adjacent outer surface 20 of the main part of flange 2.
  • each reinforced section 2b is provided with a recess 18 into which a part of the spring clamp 7 may engage in the manner as subsequently described.
  • Each spring clamp 7 is made of sheet metal and has a substantially U-shaped cross section with two arms 11 and 13. Arm 11 is provided on each end with an inwardly projecting prong 12 which is adapted to engage upon the inner side of flange 2, while the other arm 13 has an outwardly bent extension 14 with prongs 15 on its opposite ends which are adapted to engage upon the inner or lower side of shoulder 5 of range plate 3.
  • This arm 13 of spring clamp 7 is further provided near both ends with detents 16 which are stamped out of the material of the clamp and are adapted to engage into the recess 18 in one of the reinforced sections 2b of flange 2.
  • Each spring clamp 7 is made of such dimensions that,
  • the upper part of its flange 2 which is intended to serve as the seat 2a for the supporting ring 6 has a diameter D1 which is slightly arger than its final diameter D3, as shown in FIGURE 6, after it is machined.
  • the free edge of its flange 2 intermediate the thicker parts 2b has a diameter D2 which is smaller than the diameter D3 of the finished seat surface 2a.
  • the thicker parts 2b of flange 2 have the same outer diameter D1 and also substantially the same thickness as the upper flange part.
  • the thicker parts 2b are also turned with the exception of a noselike edge portion 20 on each of these parts which defines the recess 18 for receiving the detents 16 of one of the spring clamps 7.
  • the outer surfaces of these lower edge portions 20 therefore remain uncut and retain their original outer diameter D1.
  • the recesses 18 are cut to such a depth that the thinner parts 20 between the thick parts 2b will not be touched by the cutter which will therefore cut only into the thicker parts which are relatively soft any maybe easily machined.
  • the facing ring 6 of the heating plate 1 rests on a conical surface of the range plate 3 which ascends at a relatively steep angle to the rim 4 of the range hole, while in the modification according to FIGURE 10, the supporting ring 6 rests on a shoulder 5 of the range plate.
  • the spring clamps 7 according to FIGURES 9 and 10 are fitted over the rim 4 of the range plate surrounding the range hole before the heating plate is inserted.
  • These spring clamps 7 may be of different designs as shown, for example, in FIGURES 11 to 13. They have in C0111- mon that the strip of spring steel of which each of them is made comprises a U-shaped part 26 which is to be hooked over the rim 4 of the range hole, at least one spring arm 27 which engages with the lower side of the range plate, and at least one spring arm which projects into the range hole and is downwardly inclined and pressed like a barb against the flange 2 of the heating plate when the latter is applied from above. The heating plate 1 will thus be tightly clamped by the spring clamps 7.
  • the spring arm 27 of the spring clamp according to FIGURE 11 which is adapted to engage with the lower side of the range plate 3 is formed by a loop-shaped part on the end of one arm of the U-shaped part 26.
  • the extension of this loop shaped part forms the spring arm 25 which is downwardy inclined and adapted to engage upon the flange 2 of heating plate 1.
  • the spring brackets according to FIGURES 12 and 13 are provided with three spring arms 25 and 27 which are formed by a pair of cuts in the extension of one arm of the U-shaped part 26 and by bending the two outer arms in one direction and the central arm in the opposite direction.
  • the central arm forms the spring arm 27 which engages with the lower side of the range plate
  • the central arm forms the spring arm 25 which acts upon the flange 2 of heating plate 1.
  • each spring bracket which is bent obliquely in the downward direction may either press resiliently against the outer side of flange 2 or it may engage into a locking recess 31 in flange 2.
  • a device for securing a heating plate having an annular flange projecting from one side thereof to the top plate of a range having an upwardly-drawn part and a hole in the upper end of said part for the insertion of said flange comprising a facing ring surrounding and tightly secured to the upper part of said flange adjacent to said heating plate and adapted to overlap said upper end and to engage upon the outer side of said upwardlydrawn part to support said heating plate thereon, and a plurality of spring elements peripherally spaced from each other and each having one part resiliently pressing against the inner side of said upwardly-drawn part and another part resilient pressing against said flange near the lower end thereof so as to draw said heating plate downwardly and thereby to press said facing ring tightly upon said upwardly-drawn part of said range plate.
  • each of said spring elements forms a spring clamp consisting of a single piece of sheet metal formed by stamping and bending.
  • each of said spring clamps comprising a substantially U-shaped part having two arms adapted to be fitted from below over the free end of said flange, one of said arms having an extension bent outwardly and resiliently pressing against the lower side of said upwardly-drawn part of said range plate, said arm further having detents thereon adapted to engage resilienty into a recess defined by said locking projection on said flange.
  • a device as defined in claim 3, wherein said flan-ge has a plurality of reinforced sections in accordance with the number of said spring elements and peripherally spaced from each other, each of said sections having a substantially cylindrical outer surface and a radial projection near its free end forming said locking projection.
  • heating plate is made of a casting, the upper part of the flange of said casting having a considerably larger outer diameter than its lower part, each of said reinforced sections of said casting having substantialy the same outer diameter as said upper part, said upper part together with said sections then being turned to a smaller diameter but larger than said lower flange part with the execption of an end portion of each of said sections which remains uncut and thus retains its original casting surface, said turned upper part of said flange serving as a seat for said facing ring and said uncut end portion of each of said sections forming said radial locking projection.
  • each of said spring clamps comprises a substantially U-shaped part adapted to be hooked in an inverted position over the upper end of said upwardly-drawn part of said range plate surrounding said hole, at least one first spring arm bent in one direction relative to said U-shaped part and adapted to press resilienty against the inner side of said upwardly-drawn part of said range plate, and at least one second spring arm bent in the opposite directionrelative to said U-shaped part so as to extend downwardly at an oblique angle and adapted to press like a barb against the outer side of said flange near its lower end.
  • first and second spring arms are formed by an extension of one arm of said U-shaped part, said extension being bent to a loop shape forming said first arm adapted to press resiliently against the inner side of said upwardly-drawn part of said range plate, the free end portion of said extension beyond said loop-shaped part forming said second spring arm.
  • said first and second spring arms are formed by an extension of one arm of said U-shaped part, said extension being split in its longitudinal direction so as to form separate tabs which are bent in opposite directions so as to form said spring arms.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Clamps And Clips (AREA)
US665023A 1966-09-14 1967-09-01 Device for securing a heating plate to the top plate of a range Expired - Lifetime US3416513A (en)

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DEE0032483 1966-09-14

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US (1) US3416513A (enrdf_load_stackoverflow)
NL (1) NL6708421A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704514A1 (de) * 1976-02-05 1977-08-11 Hertz Carl H Verfahren und einrichtung zum erzeugen einer tintenstrahlaufzeichnung
US4119021A (en) * 1977-04-25 1978-10-10 Viola M. Heyward Gas stove attachment
US4261327A (en) * 1979-04-06 1981-04-14 Magic Chef, Inc. Range grate and clip
US4593677A (en) * 1985-07-29 1986-06-10 Magic Chef Range grate and retaining clip assembly
US5234407A (en) * 1991-03-06 1993-08-10 Baxter International Inc. Method and device for exchanging cardiovascular guide catheter while a previously inserted angioplasty guide wire remains in place
US5372121A (en) * 1994-05-02 1994-12-13 General Electric Company Cooktop grate with improved stability
WO1999037341A1 (en) * 1998-01-21 1999-07-29 Heartport, Inc. Cannula and method of manufacture and use
EP1927268B2 (de) † 2005-09-08 2017-01-11 BSH Hausgeräte GmbH Kochfeld mit einer kochfeldplatte
US11859829B2 (en) 2021-12-03 2024-01-02 Whirlpool Corporation Cooktop grate assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922420A (en) * 1932-02-17 1933-08-15 Earl V Coulston Attachment for stoves
US2664492A (en) * 1949-02-09 1953-12-29 Fischer Karl Heating plate structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922420A (en) * 1932-02-17 1933-08-15 Earl V Coulston Attachment for stoves
US2664492A (en) * 1949-02-09 1953-12-29 Fischer Karl Heating plate structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704514A1 (de) * 1976-02-05 1977-08-11 Hertz Carl H Verfahren und einrichtung zum erzeugen einer tintenstrahlaufzeichnung
US4119021A (en) * 1977-04-25 1978-10-10 Viola M. Heyward Gas stove attachment
US4261327A (en) * 1979-04-06 1981-04-14 Magic Chef, Inc. Range grate and clip
US4593677A (en) * 1985-07-29 1986-06-10 Magic Chef Range grate and retaining clip assembly
US5234407A (en) * 1991-03-06 1993-08-10 Baxter International Inc. Method and device for exchanging cardiovascular guide catheter while a previously inserted angioplasty guide wire remains in place
US5372121A (en) * 1994-05-02 1994-12-13 General Electric Company Cooktop grate with improved stability
WO1999037341A1 (en) * 1998-01-21 1999-07-29 Heartport, Inc. Cannula and method of manufacture and use
EP1927268B2 (de) † 2005-09-08 2017-01-11 BSH Hausgeräte GmbH Kochfeld mit einer kochfeldplatte
US11859829B2 (en) 2021-12-03 2024-01-02 Whirlpool Corporation Cooktop grate assembly

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NL6708421A (enrdf_load_stackoverflow) 1968-03-15

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