US2335279A

US2335279A - Range construction

Info

Publication number: US2335279A
Application number: US311715A
Authority: US
Inventors: Stanley H Hobson
Original assignee: Geo D Roper Corp
Current assignee: Geo D Roper Corp
Priority date: 1939-12-30
Filing date: 1939-12-30
Publication date: 1943-11-30
Anticipated expiration: 1960-11-30

Description

s. H. HoBsoN' RANGE CONSTRUCTION I File d Dec. 30, 1959 Ndv, 30,- 1943.

4 Sheets-Sheet 1 4 Sheets-Sheet 2 Nov. 30, 1943. s. H. HoBsoN RANGE CONSTRUCTION Filed Dec.- 50. 1959 Nov. 30, 1943.

s. H. HoBsoN 2,335,279

RANGE CONSTRUCTION 'Filed Dec. 30, 1939 4 Sheets-Sheet 5 S. H. HOBSON RANGE CONSTRUCTION 4 Sheets-Sheet 4 File d Dec. 50, 1959 Patented Nov. 30, 1943 UNITED STATES PATENT other a 2,335,279 W v RANGE CONSTRUCTION 3 Stanley H. Hobson, Rockford, IlL, assignor to Geo. D. Roper Corporation, Rockford, 111., a corporation of Illinois Application December 30, 1939, Serial No. 311,715

12 Claims.

stronger and more rigid, and also more economical construction.

In accordance with my invention frame members as well as wall member's are all fabricated from sheet metal and welded together to form a chassis, which is then dipped in ground coat enamel and fired so that the resulting inside structure for a stove is not only more rigid, stronger, lighter, and cheaper than earlier constructions with which I am familiar, but the same is sealed by the filling with enamel of all joints between the welded together parts and is thoroughly protected not only on the exposed inside surfaces but all other surfaces as well and will accordingly resist corrosion and greatly outlast other constructions in which most or the parts corresponding. to those in the present construction were merely japanned. Then, too, the rigidity of the chassis eliminates much of the damage to the porcelain enameled outer panels of the range in shipment, such damage'being common with the old bolted constructions due to the tendency of the frame structure to weave and distort, thus placing stresses upon the porcelain enameled panels suflicient oftentimes to cause the enamel to pop.

The accompanying drawings illustrate my invention, and in these drawings t Figure 1 is a perspective view of the component parts of the range chassis disposed generally as in Fig. 2 but not welded together;

. Fig. 2 is a perspective View of the welded chassis Fig, 3. is a vertical cross-section through a range embodyingthe welded chassis, the'latter appearing in section in the plane of the line 3-3 of Fig. 2;

Fig. 4 is a horizontal section through the range taken in the plane of the line 4-4 of Fig. 2; Fig. 5 is a longitudinal vertical section on the line5'5ofFig.3;

Fig. 6 is a fragmentary vertical section in the plane of the line 6-6 of Fig. 3; g

Fig.- 7 is a fragmentary I horizontal section through anotherrange of slightly modified construction, this view being inthe plane-0t the line 1-10: Fig. a;

Fig. 3 is a fragmentary vertical section in the plane of line 8-8 of Fig. '1;

Fig, 9 is a sectional detail on the line 9--Q of Fig. 8, and

Figs. 10 and 11 are fragmentary perspective views of a corner portion of the chassis illustrated in Figs. 7 to 9.

Similar reference numerals are applied to corresponding parts throughout the views.

In accordance with the present invention, the chassis l2, best illustrated in Fig. 2, is first made up from sheet metal parts welded together. Then the chassis is dipped in ground coat enamel and fired, after which the chassis is covered with insulation on the oven portion and the outer panels and doors are applied to complete the stove illustrated in Figs. 3 to 6. The sheet metal parts for the chassis are numbered i3 to 20 in Fig. l. i3 is a one-piece rectangular base panel, the portion 2! of which forms the bottom or" the broiler compartment 22, and the portion 23 of which forms the bottom of a storage or utility compartment 24, the panel 13 being flanged downwardly andoutwardly along its four sides,

as indicated at 25, giving it strength and. rigidity while also facilitating application thereto of the front frame member made of two sheet metal pieces 26- and 2 1, 26 being of right triangular shape with the base of the triangle lowermost and having a bottom flange 28 which is arranged to be spot welded to the downwardly flanged end 25 of the base panel 53, as shown in Fig, 3. The piece 2'! is flanged forwardly 1ongitudinallyas at 29 and rearwardly longitudinally as at 3i! and is arranged to be welded at its lower end 3! to the downwardly flanged front 25 of the base 13.

The fianging 28-40 obviously lends strength and rigidity and the upright i4 is braced by the triangular part 26 so as to be in rigid right angle relationship to the base l3, there being an inturned longitudinal flange 32 on the front edge of the brace 26 welded to the back of the front frame piece 21.

Member It serves the triple purpose of'reinforcing the chassis in vertical and horizontal planes, while forming th bottom of the burner box and a portion of the outer wall of the oven.

It is made from a single piece of sheet metal bent to L-shaped cross-section so-as to provide a horizontal portion 33 to form the bottomof a burner box compartment 35, and a vertical depending P ion 35'to form the lower portion 0! theouter l wall for one side of the oven section. The portion id is an upright endtop thereof in parallel relationship, and a drip pan 31 is arranged to slide in these guides, as indicated in Fig. 3. The member I5 is flanged downwardly on three sides of the portion 33, as at 38, and laterally on three sides of the portion 35, as at 39. The end and front flanges 38 are welded to the inner sides of the

members

26 and 21 respectively, while the rear flange 38 is welded to the member [8. The rear flange 39 is welded to the member l8, and the front flange 39 is welded to the middle upright member 49 of the front frame member 20. The lower flange 39 is welded.

to the base member l3.

The inner oven side wall I6 is made from a single piece of sheet metal. It is flanged laterally, outwardly with respect to the oven section, along all four edges, as at 4|, whereby it is adaptedto be welded to the back member l8 and front frame member 40 and base member l3. The opposite inner side wall of the oven section is formed by oven, and a broiler pan 41 is indicated slidably 1 engaged on a. related pair of ribs 44 in the broiler compartment in Fig.3. Certain of the ribs 44 adjacent the struck-out rectangular portions 48 in the members l6 and I1 provide support'for an oven bottom 49, as indicated in Fig. 3, above the oven burner 59. The member I6 is slotted verti cally from the lower edge, as indicated at 5| ini Fig. 1, for extension therethrough of themixing tube 52 of the burner. The mixer 53 on the lower end of this tube has gas delivered thereto through a tube 54 extended from the burner box compartment 34 downwardly through a hole 55 in the burner box bottom 33 and laterally through another hole 56 in the outer oven wall 35, the tube 54 terminating in a jet fitting 51, as indicated in Fig. 5. v

The struck-out portions 48 in the. side walls l6 and ll of the oven section afiord vertical passages alongside the oven bottom 49 establishing freer communication between the top of the broiler compartment 22 and the bottom of the baking oven 45, so that products of combustion from the burner 59 may circulate upwardly from the broiler compartment through the baking oven before discharge through the openings 58 in the top wall of the oven, which is formed by the member l9. The base I3 has two rows of holes 50' which serve to admit air to the broiler compartment 22 to supply primary and secondary air to the burner 50.

The oven top wall I9 is made from a single piece of sheet metal flanged upwardly at the front as at 59 to permit welding thereof to the top front frame member 60. The top wall I9 is downwardly flanged-along the opposite sides as at ii to fit down alongside the outwardly bent top flanges 4| of the inner side walls l6 and I! of the,

oven to which the top I9 is welded. There are also downwardly struck eyebrow" projections 62 which engage the inner sides of the walls 16 and H to locate the same in properly spaced relation prior to the welding of the members l6, l1, and

- l9 together. Similar eyebrow projections 62 on the base member l3 serve further to locate the walls I5 and I! in properly spaced relation. The top member l9 terminates in spaced relation to the back l8, as at 63, to provide a space between the top l9 and the back [8 to admit the inner rear wall 64 which is slipped into the finished chassis during the assembling of th stove, this wall being rearwardly flanged as at 65 on its four edges and being enameled to match the chassis. Eyebrow projections 66 on the base l3 at the rear end thereof serve by engagement with the lower end of the wall 64 to locate it in properly spaced relation to the back wall l8.

.The back wall I8 is made from a single piece of sheet metal and has openings 61 punched therein in that portion forming the back of the burner box compartment 34 to admit air to support combustion at the cooking top burners 69, one of these openings serving also to admit the gas supply manifold 89. An elongated slot 10 is provided in the upper end portion of the back wall I8 above the oven top IQ for communication with the outlet flue II, which is suitably bolted as at 12 onto the oven top [9 over the openings 58. The back Wall I8 is welded along its lower edge to the downwardly flanged rear edge 25 of the base I3 and, as previously stated, is welded to the flanges 4| and 42 on the rear of the inner oven side walls l6 and I! and also to the

rear flanges

38 and 39 on the

portions

33 and 35 of member IS. The free end of the back wall I8 is flanged forwardly as indicated at 13 for reinforcement.

The front frame 20 has its

upright members

40 and 43 welded to the top cross member 60, as at 49a and 43a, and the other upright front frame member 27 is welded to the end of the top cross member 69 at-ZIa. The lower ends of the

upright members

49 and 43 are also welded to the base 3 at 40b and 43b respectively, and there is a cross member 96 which is disposed in front. of the oven bottom 49 and separates the broiler compartment 22 from the baking oven 45, and this cross member is welded to the

upright members

49 and 43 at its opposite ends as at a and 86b. It should be clear from the foregoing description of the chassis I 2 that I have provided an improved range construction which not only simplifies the assembling of the range and lowers the ultimate cost, but actually greatly improves the quality of the product from the standpoint that the welded chassis can be enameled all over economically and, due to its welded construction is much more rigid than where the parts are bolted together. The chassis has all of the joints between the welded together parts filled with enamel from both sides and in that way the oven section is sealed against leakage of heat and moisture through these joints, thus protecting the insulating material surrounding the oven section from contamination besides eliminating the likelihood of the sheet metal parts rusting at the joints by the collection of moisture therein. The present range is also much lighter than with other constructions, as can'readily be appreciated when it is considered that with the present construction I have found it entirely feasible to use .050" stock for all of the

front frame members

21, 40, 43, 69, and 86, whereas in the old bolted constructions stock was commonly used in the band and angle iron stock for frame members. In the present construction all of the larger parts like l3, I5, l9, l1, l8, and I9 are all of thinner stock than that used in the front frame "

arts

21, 40, 43, 69, and 86, but are flanged assure vare adequately supported along their lower edges along the edges both to lend stillness and strength as well as to facilitate spot welding the parts ether. The ribbing of walls I8 and II at 80 also lends strength and rigidity. and the same is true of the longitudinal ribbing of the base I8 as indicated at 81. Such ribbing is not necessary in the portion 88 of member II because of the reenforeement afforded by the guides 88 that are welded thereto. The-brace 28 despite its thin sheet metal construction affords ample reeni'orcement and buttressing for the front frame member I4. The one-piece L-shaped construction of member I is also for strength and rigidity in the chassis and assures parallelism of the front frame with the back I8 while also tending to resist distortion of the chassis and keep it square. The

portion 88 has a reenforcing function in a horiwith has a reenforcing function ln'a vertical plane. M

The upper edge porton 18 ofthe back wall I 8 is offset slightly forwardly for abutment with the forwardly flanged rear edge 18 of the flue II as shown in Fig. 5 and is arranged ,to be secured to the rear downwardly projecting flange I8 of a top panel ll as by means of screws I8, one of which appears in Fig. 6 as serving to fasten the loweredge of a back rail I8 to the top panel 'II also. One, end portion of the back rail I8 has grill openings 80 therein as shown in Fig. 5, and

a flue 8I attached to the back .of the rail is open 1 at the bottom well below the level of the slot I0 and serves to conduct the products of combustion from the oven upwardly for discharge forwardly over the cooking top through the openings 80 in a well known manner. The horizontal top front frame member 601s flanged forwardly along its lower edge as at 82 and rearwardly along its upper edge as at 83, and there is a rearwardly directed flange 84 on the lower edge of the downwardly flanged front edge portion 88 of the top 'II arranged to engage under the flange 82 while the toprests on the flange 88 as is clearly illustrated ,zontai plane while the portion 80 integral thereby their lower flanges 88 engaging the outwardly bent flanges 280a theends of the base I8, while the top 1'! fm-ther serves .to locate these panels by engagement with their inwardly flanged upper edges 88 so that the single row of screws 82 provided for the fastening of each of these panels is sufficient. v

The oven section is completely insulated, and the present type of construction facilities the insulation because when the chassis is completed, asdisclosed in Fig. 2, all that remains'before app yi the insulation to the exposed outside surfaces of the inner oven walls I8 and I1 andtop wall I8 is to apply the flue II andrear liner wall 88, the wall 88 being inserted along with itslayer of insulation 88 before the flue 'II is assembled in place. The layer 80 of insulationis tucked down between the oven wall I8 and the adjacent portion '80 of the member I0, after which a sheet metal cover plate 88 is applied,reaching upwardly from the burner box bottom 88 to the top '11 alongside the cooking top portion 81 thereof where it isfastened to the top IT as by screws 88. Bolts 00 serve to fasten the flanged rear edges I00 of the plate 88 to the back wall I8, and a similar method of fastening is utilized to secure the flanged front edge of the plate 88 to the back of the middle upright front frame member 40..

The plate 88 therefore cooperates with the portion 80 of member I! to complete one of the outer side walls for the insulated oven section while also providing an inner side wall for the burner box compartment as well as an intermediate support for the top 'I'l adjacent the cookingtop portion 81 thereof so that the top will not sag under weightofutensils placed thereon. Other layers of insulation material IOI and I02 are provided to cover the top I 9 and other side I! of the in Fig. 5. In that way the top ll does not require any screw fasteners along'the front edge but only along the rear edge, and .the assembling of the range is simplified and the cost lowered, while at the same time a better appearance and stronger construction is obtained. The

side panels

88 and 80 are arranged to be secured to "the chassis in a similar manner, the same having inwardly and rearwardly flanged front edges 80 arranged to hook over the forwardly flanged edges 28 of the front frame uprights 21 and 83 clearly shown in Fig.4, while the inwardly flanged rear edges ll of these panels are arranged to engage behindthe back wall I8 and'be-fastened thereto suitably by screws 02, thus eliminating the, necessity for screw 'fastenings along more than justthe rear edges 'ofthe panels 88 and 89.' The latter have inwardlyfflanged upperand lower edges. as indi- .cated at 93 in Fig. 3, to fit between the outwardly projecting end flanges-of the base I8 and'the infz-wardly bent flanges on the ends of the top ll. 7 It is clear, therefore, that the present construction enables the application of the porcelain enameled outer panels 88 and" and the porcelain The top 11 oven. After this insulation has been applied, the

outer panels

88 and 88 and the top panel 'II can be assembled in place. The.doors indicated at I08 and I04 are also insulated, and in the construction shown in Figs. 3 to 5 extend the full height of the chassis, as indicated in Fig. 5, and are carried on concealed hinge brackets I08 boltedto the portions I08 of the front upright frame members 2! and 48. The doors have hantlles I01, and each door has a suitable roller l catch I08 projecting from the backthereof to cooperate with a detent projection I08 on the middle front upright frame member 40. When the door I08 is opened, a. panel (not shown) closing the front end of the burner box compartment 84 is exposed to view with the knobs thereon for controlling gas cocks associated with the various cooking top burners 68 as well as a knob connected with an oven heat regulator for controlling the delivery of gas to the oven burner 80. H0 is the oven thermostatassociated with the oven heat regulator in the usual way.

The range just described is adapted to be mounted on legs III of any suitable or preferred construction, those illustrated in Figs. 5 and 6 being in the form of sheetmetal panels, one under each end of the range extending from front to back, the legs being interconnected with the front ends thereof by a'transvers'e front panel H2. The legs IIIare of channel-shaped cros section providing top and bottom longitudinal flanges I I8 and I I 8 respectively. Lugs I I5 welded to the inner side of the downwardly projecting flanges 20 of the base I3 have studs II6 projecting downwardly therefrom arranged to engage'in holes provided therefor in the flange H8 and wlng nuts I I1 are threadedyon the projecting endsof said studs. I

In Figs. 7 to 11 I have illustrated a stove of generally similar construction tothe one just described but having the conventional type of down wardly swingable oven doors as indicated at I I6,

counterbalanced by means of coiled tension springs H6 connected to inwardly projecting arms I20 on the lower end of. the door adjacent its pivotal connections I2I with the. hinge brackets The handles I23 I22 flxed to the range chassis. on these doors are provided at the upper end thereof. The lower ends ofthe springs II9 are aseaave 7 unit comprising opposed vertical side panels and a horizontal top'panel all of sheet metal permanently connected together, said side and top panels havingflanges on the front edges permanently secured to the front frame, said side panels having flanges on the bottom edges permanently secured to the base panel and flanges on the rear. dges permanently secured to the back panel, all of the parts permanently secured together being so securedbefore 'enameling, the entire chassis structure being coated with enamel on all surfaces, said enamelcoating covering the portions per- I manently secured together so as to fill the joints anchored to .the stove chassis on studs I24 so that when thedoor, I I8 is opened it will not drop by.

gravity but be substantially in'equilibrium in any position. ,A sheet metal box I25 is provided on the outer ,side of each of the inner oven walls I6 and II to, enclosethe.twq springs l I9 provided for the door 8, and openings I26 and I2! sembling of the hooked upper ends of the springs onto the arms I26 is facilitated, the openings being approximately at the same level with the lower ends of the arms I20 when the oven door is closed, as clearly appears in Figs, 8 and 9.- The boxes The open-. I ings I21 are furthermore so located that the asbetween said portions and thereby'seal the oven against leakage of heat and moisture through these joints, the'top panel of the oven liner unit having vent openings provided therein, a separate sheet metal flue panel detachably secured to said top panel over said .o ningsjn communication I25 are flanged as indicated at I28 to permit welding the same to the adjacent inner oven walls It is believed the foregoing description conveys a good understanding of the objects and advantages of my invention. The appended claims have'been drawn to cover all legitimate modifications and adaptations.

I claim:

1. In a cooking range construction, a sheet 'metal chassis having a sheet metal body frame,

the frame comprising a horizontal base panel, a

vertical back panel, and a vertical front frame, all

of sheet metal having adjoining edge portions permanently secured together in overlapping relation, and a sheet metal oven liner unit comprising opposed vertical side panels and a horizontal top panel all of sheet metal permanently connected together, said side and top panels having flanges on the front edges permanently secured to the front frame, said side panels having flanges on the bottom edges permanently secured to the base panel andflanges on the rear edges permanently secured to the back panel, all of the parts permanently secured together being so secured before enameling, the entire chassis structure being coated with enamel on all surfaces, said enamel coating covering the portions permanently secured together so as to fill the joints between said portions and thereby seal the oven against leakage of heat and moisture through these joints.

'2. A cooking range construction comprising a sheet metal chassis having a sheet metal body frame, the frame comprising a horizontal base panel, a vertical back panel, and a vertical front frame, all of sheet metal having adjoining edge portions permanently secured together moverlapping relation. and a sheet metal oven liner with'a ventopem'ng provided'in the back panel, a separate vertical sheet metal rear oven liner panel detachably secured in the rearportion of, the oven liner-unit to form with-the back panel a hollow back. wall for the oven, and outer sheet metal side and top panels detachably secured to the front frame and back panel to form with the oven liner unit hollow side and top walls for said oven.

3. vIn a cooking range construction,- a sheet metal chassis having a sheet metal body frame, the frame comprising a horizontal base panel, a vertical back panel, and a vertical front frame, all of sheet metal having adjoining edge portions permanently secured together in overlapping relation, and a sheet metal oven liner unit at one end of said body frame comprisingopposed vertical side panels and a horizontal top panel all of sheet metal permanently connected together,

said side and top panels having flanges on the front edges permanently secured to the front frame, said side panels having flanges on the bottom edges permanently securedto the base panel and flanges on the rear edgespermanently secured to the backpanel, the other end of said bodyframe being adaptedto form a cooking top section, and a one-piece sheet metal panel bent to L-shape so as to provide a horizontal panel section and a vertical panel section on one side edge thereof, the panel sections having flanges on the front and rear edges permanently secured -to the front frame and rear panel respectively,

the vertical panel forming with the adjacent portion of the side panel of the oven liner unit a hollow oven wall section, while the horizontal panel section defines-the bottom of a burner box compartment for the cooking top section and the top wall of another compartment over the base panel, all of the parts permanently secured together being so secured before enameling, the

entire chassis structure being coated with enamel on all surfaces, said enamel coating coveringthe portions permanently secured together so as to flll the joints between said portions and thereby seal"- -the oven against leakage of heat and moisture through these joints.

4. A cooking range construction comprising a sheet metal chassis having a sheet metal body frame, the frame comprising a horizontal base panel, a vertical back panel, and a vertical front frame, all of sheet metal having adjoining edge portions permanently secured together in overlapping relation, and a sheet metal oven liner unit at one end of said body frame comprising Opposed vertical side panels and a horizontal top panel all of sheet metal permanently connected 7 assume secured to the back panel, the other end of said body frame being adapted to form a cooking top section, a one-piece sheet metalpanel bent .to L- shape so as to provide a horizontal panel sectionand a vertical panel section on one side edge thereof, the panel sections having flanges on the front and rear edges permanently secured to the front frame and rear panel respectively, the vertical panel forming with the adjacent portion of the side panel of the oven liner unit a hollow oven wall section, while the horizontal panel section deflnes the bottom of a burner box compartment for the cooking top section and the top wall of 7 another compartment over the base panel, all of the parts permanently secured together being so securedbefore enameling, the entire chassis 8M0! turesbeing coated with enamel on all surfaces, said enamel coating covering the portions permanently secured together so as to flllthe joints 7 between said portions and thereby seal the oven against leakage of heat and moisture through these Joints, a top panel having one end portion coacting with the top panel of the oven liner unit to form a hollow top wall for the oven, and another end portion coacting with the front frame and rear panel to form a cooking top section, and other outer sheet metal panels on opposite sides of the oven liner unit, one coacting with the vertical panel section of the L-shaped panel and correlated side panel of said oven liner unit to complete a hollow side wall for the oven, and the other coacting with the opposite side panel of the oven liner unit to form the other hollow side wall for the oven.

7 5. A cooking range construction as set forth in claim 4, wherein the top panel of the oven liner unit has vent openings provided therein, the structure including a separate sheet metal flue panel removably secured to said top panel over said openings and communicating with a flue opening provided in the back panel, and a separate vertical sheet metal rear oven liner panel detachably secured. in the rear portion of the oven liner unit to form with the back panel a hollow back wall for the oven.

6. A cooking range construction as set forth in claim 3, including an inner vertical sheet metal brace member of right triangular form, having a vertical front edge portion permanently secured to the front frame prior to the enameling of the entire chassis and a horizontal bottom portion permanently secured to the end of the base panel prior to the enameling of the entire chassis, said brace member being also permanently secured intermediate the upper and lower ends thereof to the adjacent end of the horizontal section of said L-shaped panel prior to the enameling of the entire chassis, said brace member being enameled all over like the rest of the chassis, and an outer end panel for the cooking top section of the range extending from front to being adapted to form part of an oven'section and the other end being adapted to form part of a cooking top section, a one-piece sheet metal panel bent to L-shape so as to provide a horizontal panel section and a vertical panel section on one side edge thereof, the panel sections having flanges on the front and rear edges permanently secured to the front frame and rear panel respectivell the vertical panel section adapted to form with the side wall of an oven liner unit a hollow oven side wall, while the horizontal panel section defines the bottom of a bumerbox compartment'for the cooking top section and the top a wall of another compartment over the base panel, an oven liner unit mounted on the vother end of said frame and comprising opposed side walls and a top wall, one of the side walls formin! with-the vertical panel section aforesaid a hollow oven side wall, a; top panel for said range having one end portioncoacting with the top wall of the oven liner unit to form a hollow top wall for the oven and having another end portion forming a cooking top section over the horizontal panel section of the L-shaped panel, and vertical end panels on opposite ends of said body frame, one of which cooperates with the adiacent side wall of the oven liner unit to form. another hollow oven side wall.

8. A cooking range construction as set forth in claim "1, including an inner vertical sheet metal brace member of right triangular form, having a vertical front edge portion permanently secured to the front frame and -a horizontal bottom portion permanently secured to the end of the base panel, said brace member being also permanently secured intermediate the upper and lower ends thereof to the adjacent end of the horizontal panel section of said L-shaped panel, said brace member being enameled all over like the rest of the chassis, and an outer end panel for the cooking top section of the range extending from front to rear and bottom to top thereof in parallel relation to the brace member.

9., In a cooking range construction comprising a body frame, the frame comprising a horizontal base panel, a vertical back panel, and a vertical front frame, the three elements named having adjoining edge portions secured together, a onepiece sheet metal panel bent to L-shape so as to provide a horizontal panel section and a vertical panel section on one side edge thereof, the panel sections having flanges on the front and rear edges secured to the front frame and rear panel respectively, whereby the horizontal panel section in addition to forming the bottom of one compartment and the top of another compartmerit in the range reinforces the range in a rear and bottom to top thereof in parallel relahorizontal plane, and the vertical panel section in addition to forming one side wall of one of said compartments reinforces the range in a vertical plane. 1

10. A cooking range construction as set forth in claim 9, including an inner vertical sheet metal brace member of right triangular form disposed on that side of said L-shaped panel opposite the vertical panel section and having a vertical front edge portion secured to the front frame and. a horizontal bottom portion secured to the end of the base panel, said brace member being also secured intermediate the upper and lower ends thereof to the adjacent end of the horizontal panel section of said L-shaped panel.

11. In a cooking range construction, a sheet metal chassis having a sheetmetal body frame, the frame comprising a horizontal base panel, a

vertical back panel, and a vertical front frame,

all of sheet metal having adjoining edge portions permanently secured together, and a sheet metal oven'linerunit, comprising opposed vertical side walls and a "horizontal top Well, all

[:of sheet metal permanently connectedtogether,

said'side and top walls having the front edge portions permanently secured to the front frame,

said side walls having the bottom edge p rtions permanently secured to'the base panel and having the rear'edge portions thereof permanently secured to the back panel, all of the parts permanently secured together being so secured bewalls and a horizontal top wall, all of sheet metal permanently connected together, said side and top walls having the front edge'portions permit-- nently secured to the front frame, said side walls having the bottom edge Portions permanently secured to the'base panel and having the rear edge portions thereof permanently secured to the back panel, all of the parts permanently secured together being so secured' before enameling, the entire chassis structure being coated with enamel onall surfaces, said enamel coating covering the fore enameling, the entire chassis structure-being coated with enamel on-all surfaces, said enamel coating covering theportions permanently secured together so as to fill the joints between said portions and thereby seal the oven against ..leakage r.of heat and moisture' uthroughmthese joints.

12."-In a cooking range construction, a sheet metal chassis having a sheet-metal body frame, the frame comprising a horizontal base panel, a vertical back panel, and a vertical front frame,

all of sheet metal having adjoining edge portions permanently secured together, and a sheet metal oven liner unit, comprising opposed vertical side therein, a separate sheet metal flue panel se-' cured to said top panel over said openings to tconductwproducta of comhustion-.,away from said vent openings, a separate vertical sheet metal rear oven wall panel detachably secured to the chassis to form with the back panel a hollow back wall for the oven, and outer sheet metal side and top walls detachably secured to the chassis to form with the oven-liner unithollow side and top' walls for said oven.- g g STANLEY H. HOBSON.