US1578937A - Stove construction - Google Patents

Description

March 30 1926. 1,578,937

. A.' H. TINNERMAN sTovl-z CONSTRUCTION Filed 0cm 3o, 1922 3y sheets-sheet 1 March 30 1926. 1,578,937

A. H; TINNERMAN sTovE CONSTRUCTION Filed OGL 30, 1922 3 Sheets-Sheet? lha/Aroma March 30 1926.

A. H. TINNERMAN STOVE CONSTRUCTION iled ont. so, 1922' 's snets-sheet .QM/y mmm Zig ,Bm WM,

HfzolaA/rs to the accompanying drawings.

Patented Mar. 30, 1926-.

UNITED "STATES ALBERT n. TINNERMAN, or cLEvnLANn, omo.

s'rovn coNsraUcrIoN.

Application lcd lJctober 30, 1922. Serial No. 597,755.

To all wlwm it mayomemr l Be it known that I. ALBERT HfTIuNnR` aus, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented a certain new and useful Improvement in Stove Construction, of which the following is a full, clear, and exact description. reference being had This invention relates to stoves, and has for its general object the provlsion of a novel method and means for connecting the plates comprising the panels and sides and ends of such stoves, for example, as gas ranges, whereby a more desirable finish may be obtained, particularly in that uninterrupted enamel surfaces are so joined as'to provide for both neatness in appearance and ease in keeping in a sanitary condition.

The recent demands regardlng kltchen ranges require the largest possible amountof surfaces to be enameled or polished for the sake of appearance and cleanliness. The enamel used is usually vitreous and is more .or less brittle and, therefore, various difficulties in the manufacture and shipment of such stoves include particularly the crac-king of enamel in the handling of the plates before placing them in qposition during assembling, and the destruction of enamel and the defacement of it during the shipment. Replacement of the panels and walls is frequently necessary before the dealer can ship the stove to the customer and it is again l sometimes necessary to replace the panels after. the stove isinstalled in the home.

One of the principal causes of this difficulty is that wherever a bolt, rivet or similar securing devices passes through the enameled plate, any strain thereon results in cracking the enamel. Such strains occur particularly` during the assembling of the bolts or rivets, and again during handling` of the stove.

The purpose of this invention is to provide v amel; elimination of all exposed rough edges at' connectmg corners-and avoldlng the use of seam strips and similar devices frequently used to join the plates of this character; t-o cause the plates, where joined, to form, -in effect, their own reinforced corners and edges, thus eliminating unsightly and expen- 'sive frame members at the same timev forming firmbut resilient supports at such cor- `nners; and in addition, so designing the plates that they may be cheaply cut or stamped,

and formed, and then enameled, and with the result that, being reinforced along the edges, the amount of bending incident to handling is reduced correspondingly avoid-` ing. cracking of the ename Other specific objects are to arrange for the use of standard fastening means, such as j stove bolts conveniently inserted and tightened in concealed positions and without interfering withthe lining walls used, for example, as in the oven.

To accomplish the above results, it has been necessary to work out a manner of formation of the edges of the plates so that they may be joined to each other and to the frame members where used, as well as to hot plates or stove table portions, with a uniformity of practice, resulting in the smooth surfaces and features to prevent damageto the enamel in all such various places. A'preferred embodiment of the invention is illustrated in the accompanying drawings, and the essential characteristics are summarized in the claims. Other specific objects land radvantages resultingwill become apparent in the following description. j

In the drawings, Fig. 1 is a perspective view of agas range embodying my invention; Fig. 2 is a horizontal sectional plan cut through the upper portion of the oven, the plane of the section being taken just under the upper panel of the oven and parallel therewith; Fig. 3 is a horizontal sectional detail showing the manner of fastening the side panels of the oven to the oven frame and to the back plate; Fig. 4 is an enlarged sectional detail showing the manner of attaching the oven plates to the door frame; Fig. 5 isa sectional perspective through the oven walls; Fig.l 6 is a. vertical section through the oven portions of the stove taken on a plane parallel with the back of the 'stove and looking toward the back; Fig.. 7 1s an enlarged sectional detail showing the connections between the top panel and the side panel of the oven; Fig. 8 is a sectional detailtaken on a""'plane transversely to the back wall and looking toward the right hand prise plates and griddle or open grid 'the panel.

end of the stove as sho wn .in Fig. 1 In the sectional views 2 to 7 the usual lining walls of the oven are omitted for clearness.

The type of stove chosen to illustrate` al practical and demonstrated use of my 1nvention is. shown in perspective in Fig. l, from which it will be seen that there is a uminimum number of frame elements. When it is considered that the walls of the oven and the back panel at the rear of the griddle or hot plate table. 'the sides and ,top of the oven as well as the upper shelf are all an enameled surface, while the frame and doors of the oven and the base :frame are polished metal, it will be seen that a very fine appearance is given to the whole. Attaining such appearance with eflicienc-y and economy and with the intention of permanently protecting the enamel from cracks as heretofore set out, constitutes in substance the problem which is solved by this invention.

I may refer to the drawings by using reference characters to designate the parts. Ac-

cordingly the legs of the stove are indicated by the numeralV 1 and the usual base frame, supporting the structure ofthe rangebyreference numeral 3, there being an end panel 5 and a rear panel (not shown) and a base shelf plate 7 and an oven panel 9 above which is acooking top 10, which may cpmormation as desired. 12 and 13 indicate the oven doors having frames 14 and 15 and the usual handles 16, the doors being mounted on the`usual front frame oven member 17. The oven panel above the cooking top is designated 18 and the horizontaltop or panel is designated 19. An abbreviated hood or upper shelf 20 is supported at one end of the oven and at the other end upon a bracket 22 extending forwardly from a vertical panel 23. A top cresting in the is secured in brackets or supports at each end, designated 25.

To join two panels at right angles to each other and avoid having'the seam at the corner and avoid putting bolts through the enamel as has been customary,I have worked out the arrangement shown particularly yin Fig. 7. Assuming, for example, that this section illustrates the top plate 19 and a left hand end or sidel panel of the oven, designated 27, it, will be seen that the panel 19 has a downwardly extendino flange 30 integral with an inwardly extending portion 31 parallel with the main body of the plate 19. The plate 19 and its flange are coveredl by enamel designated E, which preferably terminates where the flange 30 joins its extension 31, extending somewhat varound the not quite square corner formed between these two parts of the sheet of metal comprising The plate 27 is shown as turned inwardly at 29 to come into parallelism with the flange member 31, whereby these may form of a panel 24' meet and be clamped together by a short stove bolt 34:having the usualnut 35. The panel 27 may also be enameled as shown in section and designated E, which enamel also terminates preferably shortof the inturned flange 9, but covering the same around the corner as before. These flange members 29 and 31 stand in the space provided for insulating space between the inner and outer walls of the oven, where they are entirely concealed.

It will he seen that as the plate 19 springs or moves during the handling of the stove. or expands or contracts under the influence oit-heat, that the movement is allowed or by the natural resiliency of the metal, the

flanges 30 and 31 yielding, due to the spring of the metal at the corners. The bolts or other fastening means used to clamp the fastening members together may be set down` very tightly and permanently, and yet no crack can be thereby started in the enamel which will run out and show. If in clampmg these two flanges together, the enamel is crushed or cracked slightly betweenthe flange members 31 and 29, it occurs in the place where it cannot be seen. l

lt is to be understood that the securing of such flange members, as at 29 and 31, and

whereby there are three of the flange members 31 brought together along the bevel line at the corners, as at` 32,'v if desired;` The front flange 31, instead of being secured to the flanges of the panels, is attached by the same method to the door frame 17 of the oven; there being inwardly turned horizontal lugs 36 at suitablyv spaced intervals, pref# erably one near each corner, as shown, while v bolts 34 may pass through registering o enings in the flange and lugs and be tig tly and permanently secured. 4

The side panels of the oven are secured to this door frame 17 by the same method of attachment by-which the enamel is protected 'as before, and the securing is permanently 'and effectively accomplished. For example,

the panel 27 shows at the left in Fig. 2 and shown also in Fig. 3 is provided with a flange member having a portion at right angles and the inward portion parallel to the body 10, as shown 'at 37, one portion of this flange rest-ing against the inner face of the frame 17 and the other against the rear wall of the oven need not have the same construction, but may be accomplished by the expedient of the single flange turned inwardly as indicated at 38, Fig. 3, while the back panel may have van edge portion turned back upon itself, as indicated at 41, and be secured tothe flange 38 and its stove bolt 34. The lower edge` of the panel 27 may simply be extended therethrough with the nut of this bolt on the inside, as shown in Fig. 6.

The top panel 19 at the backl may have a longer down turned flange, as .indlcated at 44, (Figs. 5 and 7 overlapping the rear panel 40 which is shown turned over upon itself again, as at 41, and the bolt may be secured to the flange 44 by the bolts 34. The other side of the oven, preferably has a d1- vided panel, that is, a panel 9 and 18. The panel 18 `is provided with inwardly turned horizontal flanges, the upperl of wh1ch 1s bolted to the-flange 31, andthe lower of which, rests .upon and is bolted to the plate 10' of the cooking top frame projecting 1nwardly between 'these two panels, a distance corresponding to the Width of the securing flange 18. The flange of the upper edge of the panel 9 is designated 9a in Fig. 6 and the bolt 34 extends through both these flanges and the openin in the plate, clamp ing the plate between t e flanges, as shown', This effects a support for the plate frame,

' as well as a manner of securing these panels to it, without exposing the securing means, and also allows for the slight relative movement of these parts incident to moving and heating and cooling, etc., without endangering the enamel outer surfaces of the panels 9 and 18. At the lower edge of the panel 9, is a shelf plate 7 which is also preferably enameled on its upper surface and is secured by simply turning downwardly the flange 7 to lie parallel with the lower portion of the plate 9, securing it thereto in any suitable fashion'.

The idea of turning the flanges away from the exposed surface to present them to se-v curing means at places not seen, as carried out with a guard rail or top panel 24, which is turned in the form of a channel and rests upon the plate or panel 19 and. upon the shelf 20, is shown in Fig. 8, the ends being joined to the bracket members 25 in any suitable fashion. j

The panel back of the cooking table, designated 23, may be secured to the flanges on the bracket 22 in the usual manner, but at its lower edge, it has a flange resting upon the upper surface of theframe plate of the cooking table 10 while the back panel 46 for the space below the table, also has a similar flange, whereby the frame plate is joined to these two panels and incidentally supported 1n the same manner as described ingconnection with the panels 9 and 18. As shown in Fig.8, where the flanges are designated 45n and 46, the bolts '34 flanges and'openings in t 1e plate.

The shelf 20 and the side flange. of the panel 19.- This affords an opportunity for a connection between these enameled parts without sacrificing `the features previously set fort-h, by the use of a downturned flange 20,.Fig. 6, which meets the outer enamel surface of the flange portion 30, and may be attached thereto by bolts 34 which, while passing through some of the enamel surface, is h owever concealed and any damage done to the enamel is not exposed.

It will be seen from the foregoing descript1on that I have provided joints between the panel 19. is shown as connecting the ass thro-ugh these enameled p anels going to makeup the comtwo-part flanges turned inwardly to pro'- vide in effect, edges which may ,be erma- `plete stove, which comprise either singley or .I

nov

nently secured together without exposmg'the enamel surfaces. VVhere-the greatest diffi culties are afforded, that is, where the panel must be fastened along the edges most exposed, such for example, as the top .panel which is most subject to strains likely tov destroy the surfaceI have, provided an unusual resiliency byv turningdownwardly a portion of the plate and covering this with enamel merging with the top surfaceand then turning inwardly `at right angles to that flange, an extension forming in effect', a U-shaped flange, affording the greatest resiliency of connection. The inwardly turned flanges are formed in themanner shown, entirely within the oven portion where it is necessary to provide an. insulating air space, f

and the width of these flanges does not 1ncrease the usual space or interfere with the placement of' the inner wall plates. The

only exposed flange connection is at the back Y of the-stove wherev the'cooking top frame is connected tothe panels 45 and 46. The appearance of the stove is Very much enhanced the panel and eliminate the sharp ,cornersy and at the same time reinforce this connection. Practice has demonstrated that by so constructing these parts and assembling them in th1smanner, Iam enabled to very tightly and permanently securethe parts together and completely assemble the'range. Ordinary handling in shipment does not damage it, nor strains incident to moving andinstalling, do not affect the enamel finvish. Marked economy is effected over the present method which frequently resulted in replacement of one or more -of the panels by the time the stove reached the user.

It will beuseen that the formation of these panels with thc connecting flanges as shown and described, may be accomplished by very simple methods. The panels will not Crack because they are braced byintegral flanges y at least two and sometimes all four edges. This makes for the elimination of waste and economy of handling the plates during the assembling operation* and permits the formation of the plates in large quantities without appreciable loss.

I claim:

1. In a stove construction having enamel panel plates forming the outer walls of the oven, a top panel for the oven having down- -wardly turned flanges on its edges, and inwardly turned flanges extending parallel with the body of the panel and wide enough to receive stove bolts or like fastening devices, and a lfront panel having inwardly yextending lugs-meeting the flange extensions and secured thereto.

2. In a stove construction having enamel covered panel plates for'the exposed surfaces and forming .the outer walls of the oven, the combination of a top panel for the oven having kdownwardly turned flanges on -its edges carried inwardly and extending parallel with the body of the panel 'to re.- ceive fastening devices, side panels having inwardly turned flanges meeting the inward flange extensions and secured thereto, and an oven door frame having inwardly extending projections meeting another of said flange 'extensions and secured thereto.

3. A range oven construction having enameled top and side panels, enamel on all Aexposed surfaces of said panels, and securlng means within the panels when assembled,

comprising flanges turned inwardly into parallelism with one of the panels and spaced therefrom, and flan es turned inwardly to meet the first name flanges, and securing v means connecting the meetmg flanges, said flanges and securing means bemo adapted to stand within the usual vspace lbetween the inner and outer walls of the oven and a front frame member having inwardly extending lugs at the top and sides thereof secured to flanges extending horizontally and a lid frame secured to said side panel members e by means extending through the frame and saidparallel spaced apart flanges.

5. In a stove structure having enameled panel plates forming the outer walls of the oven, a top panel for the oven having downwardly turned flanges on its edges and inwardly turned flanges extending parallel with the bod, of the panel, an outer side panel similar y flanged and ya front frame member having inwardly extending lugs meeting the flanged extensions of the top andV side panels, said lugs' being spaced from the marginal edges of the front frame member a distance equal to the width of the downwardly turned flanges and inwardly turned flange of the top and side panel members respectively, whereby the marginal edges of the front frame member will be coincident with the exterior planes of the top and side panel members.

In testimony whereof, I hereunto affix my signature.

ALBERT H. TINNERMAN.

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