US2879760A

US2879760A - Fold-away cooking unit

Info

Publication number: US2879760A
Application number: US532638A
Authority: US
Inventors: Elmer D Pellegrin
Original assignee: DIXIE PRODUCTS Inc
Current assignee: DIXIE PRODUCTS Inc
Priority date: 1955-09-06
Filing date: 1955-09-06
Publication date: 1959-03-31
Anticipated expiration: 1976-03-31

Description

March 31, 1959 E. D. PELLEGRIN FOLD-AWAY COOKING UNITA Filed Sept. 6, 1955 @5- m @EEE INVENTOR 'Zmer Pellyz'izz March 31, 1959*" D'. PELLEGRIN 2,879,760

FOLD-AWAY COOKING UNIT Filed Sept. 6, 1955 5 Sheets- Sheet 2 INVENTOR ATTORNEYS March 31, 1959 4 E. D. PELLEGRIN 2,879,760

FoLDAwAY COOKING UNIT Filed sept. 6, 1955 I 3 Sheets-*Sheet 5 @l n INVENTOR "a l N mer z2. @af/ffm w BY M ATTORNEYS yfor use as a counter top or work space.

United States Patent O FOLD-AWAY COOKING UNIT Elmer D. Pellegrin, Woodstock, Ill., assigner to Dixie Products, Inc., Cleveland, Tenn., a corporation of Tennessee Application September 6, 1955, Serial No. 532,638

2 Claims. (Cl. 126-37) This invention relates to cooking units, and particularly to burners or heaters mounted on a supporting base for swinging movement from a horizontal operative position to an upright inoperative position wherein a work top or the like is exposed and uncovered for normal use.

The unit of the present invention contemplates a supporting base having a forwardly extending foot portion of small fore-and-aft dimension and an upstanding backsplash panel extending upwardly from the rear portion of the foot or base. One or more heating units, which `may be gas burners or electric heating devices, are pivoted to the base at the forward edge of the foot portion so it may be swung to a horizontal position overlyingy a portion of a supporting surface for use or may be swung t-o an upright position nested against the backsplash panel when not in use to uncover and expose the supporting surface It is contemplated thatthe unit will comprise a base of sutlicient length vto mount a pair of heating units in side-by-side relation, either of which may be independently swung from inoperative to operative position or vice versa. The construction of the unit is such that it may be mounted on any conventional counter top or work top, although preferably against a back wall, without cutting or modifying the counter surface in any material respects. The unit is adapted to be mounted by merely being placed on the rear portion of the counter top and suitably connected to a source of energy, either gaseous fuel or electricity. The heating units are of smooth exterior configuration,

"and,- when swung to' upright position define with the base an exteriorly smooth compact structure of neat appearance occupying only a very minor portion of the work vor counter topat the rear thereof. The heating unit is further provided at its outer edge with a foot or supporting element arranged to hold the heating unit in horizontal position over the counter top and out of contact therewith. The foot itself contacts the counter top for supporting the heating unit but the heating unit is held thereby spaced upwardly from the counter top to thus prevent direct heat transfer from the heating unit to the invention also lincludes a novel light arrangement for illuminating the burner when in operative position and novel valve and conduit means for maintaining communicationbetween a source of gaseous fuel and the burner in all positions of the heating unit.

It is, therefore, an object of this invention to provide a "ice cooking unit adapted to be mounted on a horizontal work surface to be readily foldable to an out-of-the-way position and expose the Work surface for other use.

Another object of this invention is to provide such a cooking unit with means to support the heating element thereof in spaced relation to a supporting surface to thereby avoid damage to that surface.

Still another object of this invention is to provide a compact cooking unit mountable on a counter top or work surface without the necessity of cutting the Work top area or making other substantial changes therein.

A further object of this 'invention is to provide a foldaway cooking unit that may be folded to a compact and exteriorly smooth, attractive structure when not in use.

A still further object of this invention is to provide a foldaway cooking unit having a supporting portion and a heating unit nestable in said supporting portion when folded to inoperative position.

An additional object is to provide in such a device a novel form of pivoted connection in a gaseous fuel conduit.

Another additional object of the invention is to provide novel counterbalancing means for a swingable heating unit.

Another and further object is to provide a foldaway cooking unit of the nature referred to employing a novel combination of cooking unit and illuminating means.

Still further and additional objects and advantages will become apparent to those skilled in the art as the description proceeds in connection with the accompanying drawings, wherein:

Fig. l is a front elevational View of a Z-panel unit embodying the present invention, showing one of the burner units in upright inoperative position and the other in horizontal operative position;

Fig. 2 is a plan view of the structure shown in Fig. l;

Fig. 3 is an end elevational view of the structure of Figs. l and 2 as viewed from the left end thereof;

Fig. 4 is a fragmentary vertical sectional view taken substantially along the line 4 4 `of Fig. 2 but on an enlarged scale;

Fig. 5 is a vertical ysectional view through the counterbalancing means taken substantially along the line 5-5 of Fig. 2 but on an enlarged scale;

Fig. 6 is an enlarged fragmentary vertical sectional View taken substantially along the line 6-6 of Fig. 2;

Fig. 7 is an enlarged fragmentary vertical section taken on the line 7-7 of Fig. 6;

Fig. 8 is a perspective View of a foldaway cooking unit similar to that shown in Figs. l to 3 but illustrating an electric heating unit; and

Fig. 9 is an enlarged fragmentary vertical section taken substantially along the line 9-9 of Fig. 8. l

Referring now particularly to Figs. 3 and 6, the cooking unit of the present invention comprises a supporting base portion defined by a hollow sheet metal member 2 of generally L-shape in fore-and-aft vertical section and consisting of an upwardly extending hollow blacksplash panel 4 and a horizontal hollow foot portion 6. The upstanding backsplash panel is provided with a rear wall 8 and a front wall 10, the front wall 10 being provided with a forwardly open recess 12 therein for a purpose to be described later. foot portion 6 may be integrally joined, with the front wall 10 of the blacksplash panel merging integrally in to an upper wall or surface 14 of the foot portion 6. The

foot portion 6 is also provided with a front wall 16 The blacksplash panel 4 and hollow municating with the passageway dening a generally'vertical forward surface. The overall fore-and-aft dimension of the foot portion 6 is, as shown, only a few inches. The foot portion 6 is further provided with a bottom wall 18 delining a generally flat horizontal surface adapted to support the entire unit on a counter or work top 2t). The supporting member is preferably laterally elongated to a length about equal to the width of. two of the heating units to be employed therewith. Each heating unit is identified generally by numeral 22 and comprises a hollow structure of substantially the same height as the backsplash panel 4 and of. ay thickness approximately equal to the fore-and-aft dimension between the front surface of the backsplash panel 4 and the upstanding surface 16 of the foot portion 6. Each heating unit is hinged to the foot portion 6 along a hinge axis 24 extending generally along the upper forward edge of the foot portion. The axis 24 is parallel to the surface dened by wall 16 and is located adjacent the bottom edge of the rear wall` 26 of the heating unit. By this construction it is evident that the heating unitA may be swung from an upright position as shown in the drawings wherein it is nested within the angle of the L-shaped supporting member to a horizontal position extending forwardly from the foot portion 6 and above the front Wall 16 thereof.

Each heating unit is provided with a supporting foot 28 extending forwardly from the upper edge thereof when the unit is in upright position and of such dimension as to engage the work top when the unit is in horizontal position to hold the unit in that position with its outer wall or surface 30 spaced above the work surface 20. The supporting foot 28 may serve as la handle for manipulation of the heating unit or the unit may be provided with a separate upstanding handle portion 32. The outer surface 30 of the heating unit is preferably of smooth uninterrupted configuration and arranged to constitute a smooth upward extension of the forward surface 16 of the foot portion 6 when the heating unit is in upright position so that the entire assembly then denes a compact' smooth and neat structure.

rIn the form shown in Figs. l through 7, the heating unit 22 embodies a burner 34 for gaseous fuel. The burner element 34 (Fig. 2) is shown as of conventional configuration vand comprises a perforated chamber into which an air and fuel mixture is conducted by a conduit 36.. The conduit 36 includes a mixing chamber 38 into which air is admitted and drawn by a jet of gas issuing from a control valve 40 under the control of the user by means of a suitable control knob 42 rotatably mounted on the outer edge of the heating unit. The valve 40 has secured thereto a relatively liexible pipe 44 for conducting gas to the valve. The pipe 44 extends rearwardly from the valve 40 inside the hollow heating unit and then extends in a complete loop 46 around the interior of the heating unit and is then curved inwardly and rearwardly, as lat 48, to extend outwardly through an opening. 50 (see Fig. 6) in the rear wall 26 -of the heating unit. Actually, a fitting 52 constitutes the portion of pipe 44 at the lopening S0 and extends rearwardly therethrough. The fitting 52 comprises part of a rotary plug portion 54 (see also Fig. 7) of a master control valve in the fuel line. The plug portion 54 is provided with a tapered extension 56 extending into a complementary chamber 68 in valve body 60. A bore 62 through the plug portion 54 provides communication between the pipe 44 and a lateral passageway 64 in the plug portion and of about the arcuate extent shown in Fig. 6. The valve body 6G is provided with a passageway 66 com- 64 when the plug 54 is rotated to the position shown in Fig. 6. Since the pipe 44 and fitting 52 are rigidly secured to the plug portion 54, the latter will rotate about its axis in valve body 60 in unison with swinging movementV of the heating unit about: its hinge axis 24 and. the passageway 64 is' so arranged that the valve is open for ow of gaseous fuel therethrough into pipe 44- when the heating unit is in its horizontal or operating position. When the heating unit is swung to upright position, the plug 54 rotates in valve body 60 sutliciently to move passageway 64 out of communication with passageway 66 and thus close the valve to prevent flow of gaseous fuel into the pipe 44.

The rotary plug 54 is formed with an axial extension 68 about which a helical compression spring 70 extends. The compression spring 70 bears at its inner end against a washer '72 abutting a shoulder 74 in the valve body and a screw '76 holds a washer 78 in position to engage the other end of the compression spring 70. The screw 76 is threaded into the extension 68 and the spring 70 thereby urges the tapered portion of the rotary plug' 54 into snug seating engagement with thewall of chamber 58 in the valve body 60.

The passageway 66 in valve body 60 extends downwardly through a tubular extension 80 of the valve body. The tubular extension is threadedly received in a threaded opening 82 of a gas manifold 84 mounted in the hollow foot portion 6 of the supporting member. The manifold S4 is of hollow construction and may be secured to the bottom wall 18 by screws 86. An. inlet pipef88 is shown extending through the bottom wall 18 of the foot portion 6 and communicates with the interior of the manifold 18. The inlet pipe 88 may be connected to any suitable source of gaseous fuel (not shown). Obviously, inlet pipe 88 could be arranged to extend from the manifold 84 rearwardly through the rear wall 8 of the supporting member, if desired.

As clearly evident from Fig. 7, the manifold 84 extends laterally inside the foot portion 6 to provide communication between the inlet pipe 88 and the master valves for each of the heating units mounted on the supporting base.

In the form shown, with particular reference to Figs. l to 4, the heating unit is provided with an electrical ignitor actuated by a push button v90 on the forward edge of the heating unit. Any suitable electrical circuits may be employed whereby uponv depression of the button 90 a circuit is completed through a resistance element 92 (see Fig. 4) positioned at the outer end of an ignition tube 94 communicating with the interior of the burner chamber 34. The operation of the ignitor is conventional and need not be further described.

As is apparent from Fig. 6 particularly, the axisv of rotation of the valve plug 54 is fixed relative to the base and is offset from the axis 24 about which the heating unit 22 swings. When the heating unit 22 is in upright position against the backsplash panel, the valve 60 remains in fixed position above thev surface 14 and, therefore, must occupy a position. within the hollow interior of the heating unit 22. To permit this to occur, the opening 50 in the rear wall of the heating4 unit 22 is made sufhciently large so that the valve 60 may pass therethrough; In other words',. theA rear wall 2610i the heating unit 22 swings over the valve 60 and moves the opening 50 to a surroundingV position. relative to the valve 60. When the heating unit 22 is in itsl upright position, the axis of valve 60 is dimensionally closer to the control valve 40 in the heating unit than when the heating unit is in horizontal or operative position and means must be provided to accommodate this' change in distance without breaking or opening the gas line. Since the gas pipe 44 in the heating unit is provided with a loop 46 and since the material of the pipe is somewhat resilient, the described change in distance between`

valves

60 and 40 may occur and beaecomniodated by exure of the loop 46 without danger of breakingthe gas pipe 44.

Referring now to Figs. 1 and 3, the recess 12 in the front wall of the backspla'sh panell is of su'ice'nt depth to accommodate a grid 96 provided over the vburner34 and to permit the peripheral border portion 98 of the top surface of the burner unit 22`t'o'abut the front face 10 of the backsplash panel outwardly of the recess 12 when the heating. unit is. in upright positipniand thus present a smooth outer surface of the closed assembly. It is to be noted that the outlineof the recess 12 lies entirely within the outer boundaries of the heating unit when the latter is in folded position. l

The grid 96 is secured to an annular drip pan 97 surrounding the burner 34 which is, in turn, mounted within an upwardly open chamber defined by a dished wall 99 mounted in the heating unit 22. v

The backsplash panel 4 is also provided with means defining a chamber 100 (Figs. l and A3) therein immediately over the recess 12. The chamber 100 is downwardly open, as at 102, in communication with the upper edge ofthe recess 12. A suitable electric lamp 104 is mounted in a suitable socket or fixture 106 in the chamber 100 and is controlled by a light switch 108 mounted in the front wall of the backsplashpanel in .position to be engaged by the border surface 98- of the heating unit when the latter is in upright position. The electric circuits are not shown and need not be described in detailbut are preferably so arranged that, ,whenwthe heating unit is in horizontal or operative position, the switch 108 completes a circuit through the electric lamp 104 to provide illumination in the recess 12 and,` therefore, over the cooking unit. When the heating unit is swung to its upright position its surface 98 engages the switch 108 to interrupt the circuit to lamp 104 and there by turns the light out when the heating unit is folded to its inoperative position.

Fig. 6 illustrates a short section of conduit 110 mounted on and extending through the bottom wall 18 of the foot portion and provided with a bracket 112 within the hollow interior thereof. The conduit 110 and bracket 112 may be insulated, if desired, from the supporting unit by means of suitable insulating blocks 114. The bracket 112 supports a transformer 116 (see Fig. 3) to provide current for the lamp 104 and/or the ignition coil 92. For clarity of illustration, the transformer 116 has been omitted from Fig. 6. The nature and arrangement of such circuits need not be described since they form no part of the present invention and many types of circuit may be resorted to as desired, by those skilled in the art. The conduit 110 provides a passageway for leading electric power conductors from a suitable source to the interior of the supporting member.

Referring now to Fig. 5, which illustrates the counterbalancing arrangement for the heating unit, the upper wall 14 of the foot portion of the supporting member is shown as having a helical coil spring 118 mounted thereon. The coil spring 118 is preferably quite stiff and xedly secured to the wall 14 at its lower end in an upright position whereby the spring tends to assume a vertical position. The rear wall 26 of the heating unit 22 is provided with an opening 120 therethrough and an inwardly extending tubular guide 122 in alignment with the opening 120. The inner diameter of the tubular guide 12.2 is only slightly greater than the outer diameter of the spring 118, which spring is mounted to extend slidably through the tubular guide 122, as shown. It will be obvious that the stress in spring 118, as shown in Fig. 5, tends to cause the spring to seek an upright position and thereby applies a counterbalanciug moment about the axis 24 tending to swing the heating unit 22 to upright position. The strength of spring 118 is not sulicient in and of itself to swing the heating unit to upright position but is so proportioned as to materially assist such swinging movement. The spring 118 further acts to resist movement of the heating unit from upright to horizontal position and thereby minimizes the danger of damage to the heating unit if it is started down from its upright position and then dropped The specific embodiment shown in Figs. l through 7 relates to a foldaway cooking unit employing gaseous fuel but it will be obvious to those skilled in the art that many of the novel features of this invention are readily adaptable to a foldaway cooking unit employing an electrical heating element. i

Referring now to Figs. 8 and 9, the modilcation shown therein is substantially identical in most respects to that previously described in connection with Figs. 1 to 7 but schematically illustrates the adaptation of the invention to an electrical cooking unit. Portions of Figs. 8 and 9 bearing the same reference numerals as portions` shown in Figs. l to 7 are substantially identical therewith and function in the same manner. However, the heating unit 22' of Fig. 8 is provided with an lelectrical resistance element which may be a conventional heating coil 124 in `place of the gas burner shown in Fig. 2. The heating coil 124 is controlled by a multiposition control switch having a knob 126 at the outer end of the heatingvunit 22', which switch may be manipulated to control vthe degree of heat produced by the heating coil 124. Preferably, the control switch 126 is arranged in series with a master switch located within the hollow foot portion 6 of the supporting member and having an actuating button 128 projecting upwardly through the uppersurface 14 of the foot portion. The button 128 is in position to be engagedby the rear wall 26 of the heating unit 22'.,when the latter is in upright position to thereby open the ele'ctrical circuit to the control switch 126 and heating coil 124. This master control switch provides a safety feature whereby current will be cut off from the heating coil 124 by the mere act of swinging the heating unit to its upright position even though the control knob 126 be left in one of its on positions.

Fig. 9 illustrates a manner in which electrical conductors may be flexibly mounted between the master control switch and the swingable heating unit 22' in the region of hinge axis 24. Fig. 9 illustrates a counterbalancing spring 118 which may be identical to that described in connection with Fig. 5 but in this embodiment the upper wall 14 of the foot portion 6 is provided with an opening 130 completely therethrough in alignment with the interior of the spring 118. Thus the spring 118 and the opening 130 define a convenient passageway through which suitable electrical conductors 132 maybe threaded to provide electrical communication between the master control switch having button 128 and the manual control switch 126. The manner of operation of this exible conductor guide will be obvious and need not be described in detail.

It is to be noted that, in both forms of the invention, the supporting member 2 is so configured that it may be readily placed on any convenient or conventional counter or work top of the type commonly provided in kitchens, without cutting recesses therein. The cooking unit occupies only a few inches of the counter space, at the rear thereof, and may be fitted snugly against the usual wall adjacent the counter top without being actually secured thereto and without marring the wall.

While a limited number of specific yembodiments of the invention have been shown and described herein, it is to be understood that the invention is not limited thereto but may encompass other modifications falling fairly within the scope of the appended claims.

I claim:

l. A cooking unit having a laterally elongated base defined by a hollow upstanding backsplash panel and a hollow foot portion extending forwardly from the lower edge thereof, said hollow foot portion having an upper surface extending forwardly from the front surface of said backsplash panel, a hollow heating unit hinged to said foot portion on an axis extending along the forward edge of said foot portion and having a rear edge wall arranged to abut said upper surface when said heating unit is swung to upright position, a gas conduit in said foot portion extending upwardly through said upper surface and communicating with a valve adjacent but above said upper surface and said axis, said rear edge wall having an opening therein of such size and position that said asesino 7 valve" extends` therethrough when said`4 heating;Y unit in upright pgzisition,Pa,l gas burner,V on saidheatingjgunit and a lowed resilient gas line providing communication'between saidvalveand' said burner.

2, A' cooking` unit havingY a laterally elongated base delinedby aoliollowupstanding backsplash panel and a hollow foot; portion extending forwardly from the lower ed'ge'thjereof,"` saidl hollow foot portion having an upper snrfaceextending forwardly from the front surface of said backsplasli panel, a: hollow heating unit hinged'k to said'zfootportion on an axis extending along the forward edgeY off said foot `portion and having a rear edgewall arranged'to abut'said upper surface when said heating unit is swung,` to upright position, a relatively stiff helical springxed at one end to said hollow foot portion to normally'f'extendv upwardlyfrom said upper surface but being'n resiliently lbendable from itsv uprightv position, an opening,7 iny said rear'edge wall and' through which said springextends, and atubular guide xed to the interior loffsaid heatin'gmnit substantially normal to said' rear edge wall" ami slidablyf4 embracings said spring whereby said spring` acts'tostresilientlycounterbalance said,v hinged heat ingrgunit."

UNITED f SILATES PATENTS Hale Ju1y-16, 1872 Crandall Sept. 22, 18-85 Nicholls May 30, 1905 Allen' Ang. 1, 1911 Doner Jan. 4, 1949 y Ray June 27, 1950 Reedy June 12, 1951 Beynon Sept. 4, 1951 Kennedy Oct. 20, 1953 Van lHelden Apr. 20, 1954 Hennell'y; Feb. 1, 1955 Pellegrin; Nov. 1, 1955 Sandin Mar. 13, 1956 Fleming`- Aug. v20, 1957 Gottfried Oct. 29, 1957 FQREIGN PATENTS G`t'eat-.lritaiz'x` Feb. 19, 1937