US1344061A - Range - Google Patents

Description

R. L. POE.

RANGE.

APPLICATION FILED MAY I9, I916- 5 SHEETSSHEET I- v E R Bert Po e.

fi gg z ATTORNEYS Patented J 11116 22, 1920.

5 SHEETSSHEET 2.

INVENTOR jioAerz L Poe.

WI T/VESSES: 777. 6 15 ad 2 ATTOR/VEVJ R. L. POE.

RANGE.

' Patented June 22, 1920.

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W/TNESSES: I/Vl/E/VTOR 7726 fi 056/"Z .L.P0:. W BY 2 W ATTORNEYS R. L. POE.

RANGE.

APPLICATION FILED MAY I9, I9I6- Patented June 22, 1920.

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UNITED STATES PATENT OFFICE.

ROBERT L. POE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE POE RANGE COMPANY, OF

CHICAGO, ILLINOIS, A CORPORATIO N OF. DELAWARE.

RANGE.

Specification of Letters Patent. 7 Patented June 22, 1920.

Applieationfiled May 19, 1916. Serial No. 98,532.

To aZZ whom it may concern:

Be it known that I, ROBERT L. POE, a citizen of the United States, residing'at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Ranges, of which the following is a'specification.

This invention relates to improvements in ranges, and has for its object to provide a new and improved form of range. The object of this invention is to provide a new and improved range in which means are provided to enhance the combustion of the fuel and thereby increase the eiiiciency and economy of operation.

Still another object is to provide an improved top construction for such a range which will permit ready assembly ordisassembly and securing of same in place without bolts or other fastening means.

Still another object consists in providing means to preheat the air supplied for combustion and to utilize such air for insulation of the floor from the range.

Still another object consists in providing spaced. apart individual ovens, together with means for controlling the flow of heating gases around and between such ovens. I m Another object consists in the provision of means to draw off the fumes, smoke,etc., from the region above the stove.

Another object consists in providing antomatic safety dampers in the ovens, such dampers being constructed to automatically open upon the ignition of food cooking in the oven or sudden expansion of the air or gas therein, to prevent explosion when the door is opened.

Another object resides in the provision of new and improved door carrying and operating means for theindividual ovens.

These and other objects will be more fully set forth in the following specification and shown in the accompanying drawings, in which; I

Figure 1 is a perspective of the range embodyinn my inventions, portions thereof'be- 0 mg broken away for clearance;

Fig. 2 is a vertical longitudinal section through my improved range;

Fig. 3 is a transverse vertical section through the same, a portion of the outlet flue being broken away for clearance;

, line 16 16 of Fig. 15.

Like numerals refer "Fig. 4 is a front elevation of my automatic safety damper;

Fig. 5 is-a perspective of the same;

Fig. 6 is a horizontal section along the line 6-45 of Fig. 2;

Fig. 7 is a detail plan viewv of a portion of the grates;

Fig. 8 is a detail vertical section of a portion of the air intake and gas circulatmg space;

Fig. 9; is a similar sectional detail of the end lining construction;

Fig. 10 is an end elevation of one of the grate bars; i

Fig. 11 is a vertical cross section along the line 1l11 of Fig. 7 i

Fig. 12 is a longitudinal section of one of the top plates; I

Fig. is a transverse verticalsection of the same; i

Fig. 14f is a perspective of oneoof the.

doors;

Fig. 15 is an end elevation of my improved range, portions thereof being broken away for clearance, the front portion being shown in section along the line 15"15 of Fig. 2, and the back portion being shown in section along the line 1515 of Fig. 2; and

Fig. 16 is a horizontal section along the to like elements throughout the drawings. 20 indicates-individual ovens having the shelves 20, for example, and spaced apart from each other and from the ends of the range proper to form circulation spaces 21. At one end of the range is located a fire-box 22 located above the ash chamber 23 and separated therefrom by means of the grate'bars 24, which are provided with spacedapart elliptical collars 241: which terminatein inter meshing cogs 24;; The minor axes of these collars are so related to the major axes that halfrotation of the grate bars'will permit the passage therethrough of ash or clinkers, and any of the latterwhich may become caughtbetween the grate bars will be crushed and dropped through upon full rotation of the same,and at the same time the body of the fire will not be allowed to drop into the ash box 23. At the sides of the fire box 22 are provided partition walls.

22, 22', respectively, the former being located adjacent but spaced from the side wall of the end oven 20. For insulating said oven from too great heat an additional thickness of metal, or the like, 22, is located tl'iereagainst, as clearly shown in Fig. 2, for example. At its upper portion the fire box 22 is provided with the insulated back wall 22, see Fig. 6 for example, and in this back wall is provided a damper 25 leading into the main chimney or flue 26. This damper 25 is operable by the shaft 25 and rod 25" leading to the front portion of the range, at one end thereof, see Fig. 6. From the lower portion of the fire box and extending to adjacent the bottom of the range at the back thereof isthe partition wall 27, see Figs. 6 and 16. Partitions 22, 22 and 27 form the circulation spaces a, 7) and c resp ctively, about the fire box and ash box, and the partition walls 22, 22" are provided with apertures communicating with such fire box for a purposeto be hereinafter described.

indicates generally the range top located above and spaced. from the top of the ovens 20, as shown in Figs. 1 and 2. This top is constructed in sections, as clearly shown in Fig. 2, these sections overlapping, as shown at 30, and being provided with reinforcing ribs 30 At the rear portion of the range, plates comprising the top 30 are provided with the upstanding flanges 30, and inwarrly thereof the curved lips 30 A portion of the top 30 intermediate the lips 30 and flanges 30" rests upon the top of the rear wall 29 of the range, the same also constituting the rear wall of the ovens and being formed of two plates having a lining 29 of asbestos or other heat insulating material therebetween. At the forward portion of the ran e the topplates 30 are provided with the depressed flattened under portion 30 resting onthe front wall 29*of the range, the same constituting the front wall of the ovens 20 and being constructer similarly to the rear wall 29, in that it is provided with a sheet of heat insulating material such as asbestos, located between two spaced apart plates. At their sidesthe top plates 30 are provided with the cut-away portions 3O and 30 respectively, portions 3O being intended to overlie and match portions 30* of the adjacent plates, whereby a continuous flush surface is provided for the top of the stove. The outside plates are also provided with downturned ends 30 fitting over and resting on the end ails 29 of the range. This 'top construction is such that while presenting a flush and level upper surface it is constructed of a number of sections so arranged as to be readily lifted for access to the interior of the range for cleaning, or the like, and at the same time no belts or similar fastenwithout necessitating a fastening. Between each of the ovens 20 is provided a circulation space 20, and at the top of the ovens, extending between adjacent edges, are the dam iiers 5O resting. upon angle irons 50* carried by the adjacent sides of the ovens, see Fig. These dampers are provided with handles 5O projecting outwardly in front of the range. 1 These handles are con structed and arranged to coact with a notched. quadrant 50 to retain the dampers Si. in open or closed position, or in positions intermediate such limits. \Vhen one of the dampers 50 is in closed position it will restrict the flow of gas between the adjacent pair of ovens. It may also be opened to full position, whereby itwill cut off-flow of gas beyond and will-direct the same through the" circulation space betweenl the ovens. Likewise, the damper may be placed in position intermediate these limits to partially divert and partially check the flow of g: In this manner the heating of. individual ovens may be readily controlled, as will be obvious. ith these dampers in closed position flow of heating gas is from the fire box over the tops of the ovens to the opposite end. of the range downwardly to the bottom thereof, and from thence back past the bottomsof the ovens to an outlet port 51 and from thence they may flow through an inclined portion 26 of main flue 26, as clearly shown in Fig. 2, for example. Located beneath the circulation space. 21 is the .air duct 52 formed by spaced apart walls This duct permits entrance of air at the left hand end of the range, as viewed in Fig. 2, to the circulation space Z) from whence it will flow in back of the ash and fire boxes to the circulation space a through the space 0 and this air will be discharged through the apertures in partition walls 22, 22 across the fire so as to enhance and greatly increase the combustion of the fuel gas prior to its circulation about the ovens.

It will be apparent that by locating my inlet air duct as I have shown, the incoming air will be preheated before reaching the firebox and at the same time willserve to insulate the'bottom of the range from the floor. hen building a-fire in my range I eliminate the circulation of the fuel gas by opening damper J5, whereby a greater draft may be obtained and initial combustion readily obtained. A partition 26", see Fig.

ltd

'6, extends partially across from the back of the range to the front at the port 51 to inlsure proper circulation beneath substantially the entire portion of the oven 20 adjacent the fire box.

It happens in some instances that greasy foods being cooked in an oven will generate combustible gas in such quantity that rapid ignition, amounting in effect to an explosion, will take place, resulting sometimes in the blowing of the doors from the hinges and injuring the chefs, .or resulting in a flare-out or explosion when the door. is opened to inspect the interior of the oven. To eliminate these explosions and blow-outs, I provide thefollowing construction: Outletports 20 are provided in one sideof each of the ovens 20, these ports being surrounded by the casings 20, from which project, at each end, the lugs 20 I Dampers or doors 2O are provided, the same being provided with trunnions 20 hingedly mounted .in the lugs 20 the latter being so arranged that the. dampers 20 will lean inwardly when in closed position, as shown in Fig. 5. These dampers are provided on their inner face with ridges or ribs 20 to increase their weight, and to locate the center of gravity, when in closed position, inside of the trunnions thereof; A fin 20 is located adjacent one end of the dampersQO, and is preferably made intogral therewith, such fin being slotted, as iiidicated by numeral 20. An operating lever 60 is provided, the same having an offset portionGO engaging the slot .20, and a handle portion 60 projecting, beyond the front oi the range, as shown in Fig. 1. This handle portion. 60! is angularly disposed and will serve to lllCllCittGtllB position of the damper 20, as will be obvious. These dampers are so constructed and arranged that when in theposition shown in Fig. 2,

for. example, they will close the ports 2O, their center of gravity, as explained, being so located with respect to the trunnion ,moiniting as to normally retain; them in closed position. Uponsu'dden ignition, or expansion of gas in the ovens, especially when combustion thereof takes place, the

pressure is rapidlyincreased and immediately opens the. danupers, 20 "and before such gas can become sufliciently compressed and 2, for example.

thereof, and provided with trunnions see Fig. 1, mounted in suitable bearings'il attached in front of the range. Casings 72 i are attached to the front of the door-s '70 and slidably mounted in said casings I are bars 73 having the enlarged upper heads 73, aperturedat 73" to fit over and engage the hooks 74 carried on the front of the range. Secured adjacent the lower extremities of the barsZS are rings 73 extending through suitableslots 72 in the casing-72 and attached to, the bars An operating rod 75 extendsthrough these rings and may beflifted to move the heads 7 3* out of looking engagement with said hooks 74. To counter-balance the door,, I provide the counter-balance 7 6 mounted inside of the front wall of the range and beneath the bot- :tom thereof,'asishown in Fig 3, for example, vided with the upwardly extending arms -76, thesame being angularly constructed These counter-balances 7 6 Iareproand extending throughsuitable slots in the front plate of the range. Apertures 7 6" are provided in such arms ad acent their unction with the counter-balances 76, and through these apertures 7 6 are inserted suitable pins 77 carried by the bottom of the range, see Fig. 8. Attheir upper extremities these arms 7 6*are' provided with. pins 7.6 extending into suitable slots 72" in the casing 72 and operating to engage such casiiigs, see Fig. 14. It will be apparent that the weight or counter-balance 76. being of proper size and weight the door will be counter-balanced sons topermit .its ready movement to open or closed position, while permitting its maintenance iii e ther of such positions. At the same 'tiinethe counterbah -nce is removed from sight or possible interference with the user of the range. Clean-out doors 77 are provided inthe front -wall off the range.

Located abovethe top of the range proper are the heating shelves 80 extending between and secured to the side plates 81, and similarly attachedto the back plate 82. Lo-

cated adjaceut the central portion of this member 83 terminating in an outlet flue 84, he upper heatingfshelves 80 being suitably 'a'pertured or recessedto permit location of the outlet duct 83 which terminates above the surface otthe range-and serves to draw of]: and exhaust fumes, smoke, orthe like,

arising from the top ofthe range and thereby preventing their disseminatioin Suitable supporting legs or standardsare provided for the range, as shown in Figs. 1

It will be apparent from the above description, and the showing of the drawings,

that I can admit preheated air to the upper portion of thefire box at which place itwill I be mingled with the products of combustion backLplate SQis the flaring ortape'red duct circulation of the heating gases past, and

around the ovens, as desired, to maintain different relative heating effects 1n such OVBHS.

It is believed that the-operation and con struction of my improved range will be so 'clear'from the above description as notto requirefurther explanation herein.

It willealso beobvious that my invention issusceptible of modification and improve ments, and I do not wish to be restricted to the formshown and described except as defined in the appended claims.

\Vhat I claim is: w

1. lnicombination, a range comprising an oven, a fire box, the side walls of said. fire boxbeing hollow and provided with means for directing air into said fire box between the surface of the fueltherein and the top of said. box, and an air heating supply duct adjacent the range bottom and below said oven and leading to said fire box wall, whereby air drawn through said duct will be heated prior to its introduction into said fire box.

2. A range comprising an outer casing, a fire box. and an'ashpit positioned therein and spaced from one end thereof to provide an air chamber adjacent one side of said box and pit, an ovenmounted in said casing and spaced therefrom and from said fire box and ash pit to provide an air chamber adja cent the other side of said box and pit, a partition wall covering one end of said pit and extending partly into said fire box to provide a communicating passage between said chambers, and a duct opening into one of said chambers at one end and exteriorly of said casing at the other end.

3. A range comprising an outer casing, a fire box and ash pit therein, an oven adja cent said box and pit and spaced therefrom to provide an air chamber 7 therebetween, said air chamber extending from the bottom of said pit to the top of saidbox, an air duct leading from the exterior of said casing and passing beneath said pit, and a passage adjacent one end of said pit and extending part way into said fire box for connecting said duct with said chamber.

4. A range comprising an outer casing, an oven, an ash pit, a fire box mounted above said pit, tllGSldG walls of said box and pit being common, an air chamber adjacent each of said common walls and coextensive therewith, a substantially broad fiat'passage connectingsaid chambers, the lower portion of said passage lying adjacent one end of said pit and the upper portion thereof lying within said fire box, the walls of said chamber being apertured for admitting-air into said fire box, and ducts for carrying'olf said air after admission into said box, said ducts extending around said: oven to thereby heat the same.

5. Arange comprising anouter casing, an oven mounted therein and spaced from one wall, thereof, a fire box and. ash pit interposed between said oven and wall and spaced from each to provide an air chamber adjacent each side of said box and pit, said chambers extendingfrom the bottom of said pit tothetop of said box, a passage connecting said chambers, the lower side ofsaid passage lying below the bottom of said box and the upper side thereof lying above the bottom of said box and in close proximity thereto, an air duct leading to one of said chambers, and means for directing the air after it has passed through said chambers over and around said oven.

6. In combination, a range, a back plate extending upwardly from the top thereof, shelves carried by said back plate, and a fume conveying duct extending through said shelves. 7

7. In a stove, a casing, a trough-like chamber provided in said casing near one end thereof and spaced from said end and from the bottom of said casing, a grate in said chamber dividing the same into a fire box and an ash-pit,a partition plate spaced above said bottom and extending from said ash pit to the other end. of said casing, the space intervening between said plate and said bottom together with the space between said chamber and said bottom providing a continuous passage from end to end of said casing, anoven mounted in said casing adjacent said chamber and spaced therefrom, said continuous passage communicating with the spaces on each side of said chamber, an inlet at-the far end of said passage, and a sericsof outlets in the walls of said firebox above the normal level of the fuel therein.

8. In a stove, a casing, an oven mounted therein, a fire box, an ash pit, the side walls of said: box and pit being in substantial alinement and spaced from the end wall of i said casing and the side of said oven respectively to provide thin flat air circulation passages, said passages extending from the bottom of said pit to the top of said box, and an air heating passage extending along the bottom of said stove and provided with an inlet at one end and communicating with said first named passages at its other end,

said first named passages opening into said fire box through a series of outlets provided in the side-walls thereof above the normal level of the fuel therein.

9. In a range, the combination with an oven mounted therein and spaced from the Walls thereof, to provide a fine passage automatically operable upon a sudden intherearound for the products of combustion, crease in pressure of the gases Within said a door for said oven providing access thereto oven to open said port and permit said gases 10 from the exterior of said range, of an outlet to escape into said flue passage. port provided in one wall of said oven and In testimony whereof, I have subscribed opening into said flue passage, and means to my name. i

normally close said port, said means being ROBERT L. POE.

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