US1148669A - Bake-oven. - Google Patents

Description

J. FAULDS.

BAKE ovEN.

APPLICAYTION FILED JAN. 4| 1915 Patented Aug. 3, 1915.

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1. FAULDS.

BAKE OVEN.

APPLICATION FILED IAN. 4. I9I5.

[IIN 12 MIIIIII:

'IIIIIIIIIA Patented Aug. 3, 1915.

J. FAULDS.

BAKE OVEN.

APPLlcATloN FILED 1AN.4. |915.

Lm Patented Aug. 3,1915.

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BAKE ovEN.

APPLIC 915| 1,148,669. Patented Aug. 3, 1915.

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.IOrIN rAULn's, or OAK PARK, ILLINOIS, AssIGNOR Or oNii-HALI To JOHN I.

' MARSHALL, or CHICAGO, ILLINOIS.

BAKE-OVEN.

Specification of Letters Patent.

Patented Aug. 3, 1915.

Application led January 4, 19515. Serial No. 468.

To all whom t may concern.'

Be it known that I, JOHN FAULDS,V a citizen of the United States, and a resident of Oak Park, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Bake-Ovens, of which the following is a specification, and which are illustrated in the accompanyingdrawings, forming a part thereof.

The invention relates to bake Ovens and more particularly to those of the type known as continuous ovens wherein the baking compartment is closed and the gases from the re are vconfined within iues.

The invention contemplates improvements in bake ovens of this type whereby the ovensy may be quickly erected at the place of use by merely itting together the previously constructed parts and the heating of the baking compartment is rendered more eiiicient and more readily controlled.

The invention further contemplates that in some instances a plurality of baking compartments may be employed, in which case improvements are provided for controlling the heating of all of the compartments.

The object of the invention is to provide bakers ovens of improved construction and more eiiicient operation. I

In the accompanying drawings, Figure 1 is a perspective view showing an oven embodying the features of improvement provided by the invention some of the parts being broken away to show details of the supporting frame work and internal construction, Fig. 2 is a central transverse sectional view of the oven, the planes of the section being indicated by the broken line 22, on Fig. 1, Fig. 3 is a central longitudinal sectional view, Figs. 4 and 5, are detail perspective views showing the arrangement of the oor beams of the frame work and the lues which connect with the furnacein two different positions of the latter.

The oven provided by the invention com-- prises a supporting frame work generally.y

designated 10. This frame work is shown as made principally from a plurality of metal angle bars, including the floor beams 11, 12, uprights 13, 14, and the roofing members 15 16.

',Ihe ioor beams 11 and 12 are preferably arranged intwo rectangular frames, each of the beams 12 being parallel with one of the beams 11 but within the space inclosed by said beams 11. The beams 11 and 12 accordlngly serve as the lower edges of a set of d ouble walls including the inner and outer side walls 17 18 and the inner and outer end walls 19, 20. The uprights 13, 14 are desirably arranged in two sets. As shown the uprights 13 are connected with the floor beams 11 and serve as corner posts for the outer side and end walls 18 and 20. Similarly, the uprights 14 rise from the floor beams 12 and enter into the construction of the inner side and end walls 17 19. If des lred, a strengthening band extending entirely about the oven may be provided by the use or' a set of horizontal beams 21, each connecting two adjacent corner posts 13 at about their mid height.

, The inner and outer side and end walls 17, 18, 19, 20 are preferably completed by the use 4of sheetumetal panels 22, 23. The panels 22 extend horizontally between the corner .posts 13 of the outer walls 18, 20, above and below the beams 21. The panels 23 extend vertically between the upper and lower edges of the inner walls 17 19, between the uprights 14.

vThe roofing members 15, 16, connect the higher ends of the uprights 13, 14, respectively and are spaced apart to provide frames for outer and inner covers 24, 25. The outer cover 24 is shown as being of sheet metal. The inner cover 25 is preferably oi' tile. To provide an economical use of the heat. Yfor baking and in order that the oven may kpresent a cool exterior, the space between the inner and outer walls 17, 19, and 18, 20, and between the outer and inner covers 24, 25, is preferably filled with a loose heat insulating material26.

. The drawings show upper and lower baking compartments 27 and 28.l Each baking compartment has a chambered hearth, as 29, androof, as 30, the horizontally disposed chambered wall 31 extending between the upper compartment 27 and lower compartment 28, constituting the hearth of the former andthe roof of the latter. Charging doors 32, 33, each mounted in a frame 34y which is tted into and extends between the inner and outer walls 19,20 at one end, provide access tothe chambers of the baking compartments 27 28, in the usual way. The two walls, as 35, of each of the hearths 29 and 31, and the lower wall 36, of the chambered roof'30 are each constructed of tile and each is supported in a frame work of angle bars, as 37, (Figs. 1 and 3) which are carried by the uprights 14, of the inner side and end walls 17, 19. The inner cover 25 of the oven structure constitutes the upper wall of the chambered roof 30 of the baking compartment 27.

The furnace is generally designated 38. It is located below the hearth 29 of the lower baking compartment 28, and may be placed adjacent either end of the oven, 1n order that the oven may be fired from either end. For this purpose a frame, 39, 40, for receiving a door panel 41 is fitted in the walls 19, 20,` at each end. When the furnace 38 1s placed near the front oven, as in Figsl, 2, 3 and 4, the door panel 41 is fitted 1n the frame 39 and a closed panel 42 (Fig. 3) is fitted in the frame 40. Iny event the oven is to be fired from the back, the furnace 38 is placed, as in Fig. 5, and the door panel 41 is fitted in the frame 40. In this instance the closed panel 42 is fitted in the frame 39.

A Hue 43 preferably extends transversely beneath the hearth 29 at the mid length of the oven structure. This Hue is shown as comprising an intermediate T-section 44 which has swiveled connection with each of the outer sections, as 45, 46. This arrangement provides that the intermediate T-section 44, may be reversed for connection of its central leg 47 with the furnace 38, in either position of the latter. The two outer sections 45, 46, of the Hue 43 are turned forwardly at their outer ends and each connects with a Hue box 48 which is located at the corresponding side of the furnace near the front end of the oven. Each flue box 48 is supported in an elevated position beneath the hearth 28, as upon legs 49.

A vertical Hue 50, extends upwardly from each of the Hue boxes 48 between the inner and outer side walls 17, 18, of the oven. As shown, each of the Hues 50, takes the form of a sheet metal box which is fitted against the outside face of the adjacent sheet metal panel 23 of the corresponding inner side wall 17. The two ends of the Hues 50 are inturned, as 5l, 52 (Fig. 2) and extend through the panel 23 for entering the HueV box 48 and the chamber of the roof 30 of the baking compartment 27, respectively. Each Hue 50, preferably also has an intermediate `opening 53, in line with the chamber of the hearth 31. Each of these openings is surrounded by a Hange 54 which also extends through the adjacent side wall panel 23 and enters the said hearth chamber.

To permit the heating of the two baking compartments 27, 28, to be effectively regu lated, provision is preferably made for causing the furnace gases to pass either through the chamber of the hearth 3l, or directly to the chamber of the roof 30. This is conveniently accomplished by providing dampers 55 (only one of which is shown) for controlling the opening 53. Each of these dampers takes the form of a plate which is hingedly connected with the wall of the correspond.- ing Hue 50 upon the inside along the upper edge of the opening 53, as at 56 (Fig. 2), the arrangement being such that the damper` 55 covers the opening 53 in one position and extendsacross the chamber of the Hue 50, above the opening 53, in the otherv position. Each damper 5,5, may be provided with a crank 57 lfor operating the same. As it is desirable to operate the two dampers simultaneously, a single 'operating rod 58 is preferably employed. As shown, this rod extends continuously across the top of the oven in a conveniently accessible position near the front of the same and the two ends of the rods are turned downwardly and enter the chamber of the Hues 50, fo-r connection with the cranks 57 (Fig. 2).

To prevent the hearth 29 being over heated by radiation from the furnace 39, provision is preferably made for permitting a circulation of cool air through the chamber of this hearth. As shown, the door panel 41 is provided with openings 59, which communicate with the chamber of the hearth 29 and are controlled by adamper 60.

In order that the gases which enter` the chamber of the hearth 31 and the air which enters the chamber of the hearth 29 may be conveyed to the chamber of the roof 30, the chambers of both of these hearths are connected with the chamber of the roof 30 at the rear end of the oven, as by Hues 61, 62 and 63. Each of the Hues 61, 62 andl 63, preferably takes the form of a sheet metal box which is fitted against the outer face of one of the sheet metal panels 23, of the adjacent` inner end wall 19, and has its opposite ends inturned, as at 64, and 65, (Fig. 3) for extending through the said sheet metal panel and entering the corresponding chamber. As shown, the Hue 61 serves for connecting the chamber of the hearth 31 with the chamber of the roof 30 and is located at the mid width of the oven. The Hues 62 and 63 both serve for connecting the chamber of the hearth 29 with the chamber of the roof 30. These Hues are preferablyl located` upon opposite sides of the flue 61, as most clearly appears in Figs. 1 and 2.

The gases and air which are delivered to the chamber of the roof 30 are carried away by a smoke pipe 66. As shown, this smoke pipe connects with a Hue box 67 which is fitted between the covers 24, 30, adjacent the front end of the oven and is open at the bottom for communication with the chamber of the roof 30. The Hue box 67 is conveniently supported by being mounted upon a pair of laterally separated channels 68, 69, (Fig. l). These channels extend longitudinally through the chamber of the roof 80 for a portion of its length. When the furnace gases enter the chamber of the roof 30' di` rectl'y from the iiues 50, the channels 68, 619

serve for diverting them toward the near end of the oven before entering the flue box 67. If desired, a sliding damper 70 may be provided for controlling the smoke pipe 66.

The arrangement provides that the oven may be easily erected at the place of use from previously constructed parts; that the firing may be from either end without change in the construction of such parts, and the temperature of both baking compartments may be effectively regulated.

I claim as my invention,-

l. In a bake oven, in combination, a baking compartment having a chambered hearth, a furnace, a flue and a damper arr nged to divert the furnace gases from the flue into the chamber of the said hearth when in one position and to separate the flue from the said hearth chamber in a different position.

2. In a bake oven, in combination, a baking compartment having a chambered hearth and roof, a furnace, a iiue leading from the furnace to the said roof chamber and having a port opening communicating with the hearth chamber, a fiue connecting the hearth and roof chambers and a damper controlling the said port opening and arranged in its open position to intercept the travel of gases through the first mentioned flue beyond the port opening.

3. In a bake'oven, in combination, a baking compartment of rectangular shape having a chambered hearth and roof, a furnace below the hearth, a pair of flues extending from the furnace to the roof chamber at opposite sides of the baking compartment near one end of the same and each having a port opening communicating with the hearth chamber, a flue connecting the hearth and roof chambers at the other end of the compartment and dampers controlling the said port openings, each damper being arranged in its open position to intercept the trave-l of gases through the corresponding flue beyond its said port opening.

4. In a bake oven, in combination, a baking compartment of rectangular shape, a Hue extending transversely below the baking compartment at its mid length, said flue including a reversible fitting having a port opening which faces in the directions of the opposite ends of the baking compartment in the two positions of the fitting and a furnace constructed to be interchangeably located below the two ends of the baking compartment forconnection with the said port opening in the corresponding position of the fitting.

5. ln a bake oven, in combination, a pair of superimposed bakingcompartments each having a chambered hearth, the hearth of the upper compartment constituting the roof of the lower compartment and the upper compartment also having a chambered roof, a furnace below the hearth of the lower compartment, air ports opening into the chamber Of the hearth of the lower compartment, adamper controlling the said air ports, a flue leading from the furnace to the chamber of the roof of the upper compartment and having a port opening communicating with the chamber of the hearth of the upper compartment, fiues connecting the chamber of the two hearths with the chamber of the roof of the upper compartment, and a damper controlling the said port opening of the first mentioned flue and arranged in its open position to intercept the travel of gases through said flue beyond its said port opening.

6. A bake oven comprising, in combination a pair of superimposed rectangular baking compartments, a furnace located centrally below the hearth of the lower compartment, a pair of parallel horizontal fiues, one extending lengthwise between the roof of the lower compartment and the hearth of the upper compartment and the other extending through the roof of the upper compartment, a second pair of iiues extending laterally in opposite directions from the furnace to one end of the lower baking compartment adjacent opposite sides of the same and thence upwardly to the roof of the upper compartment with openings into each of the flues of the first mentioned pair, a damper in each -of the flues of the second mentioned pair between the openings of the corresponding flue into the two flues of the first mentioned pair, and connection between the two flues of the first mentioned pair at that end of the oven which is remote from the upwardly extended portions of the flues of the second mentioned pair.

7 A bake oven comprising, in combination, a pair of superimposed rectangular baking compartments, a furnace located centrally below the hearth of the lower baking compartment adjacent one end of the same, a pair of parallel horizontal flues, one extending lengthwise between the roof of the lower baking compartment and the hearth of the upper baking compartment and the other extending through the roof of the upper baking compartment, a second pair of flues extending laterally in opposite directions from the inner end of the furnace to the two sides of the oven thence forwardly to the front end of the oven and upwardly to the roof of the upper baking comvpzutrnent with openings into each of the two fines of the first mentioned pair at the fines of the first mentioned pair, a damper in rear end of the oven.

each of the fines of the second mentioned Y JOHN FAULDS.v pair between the openings of the corre- Witnesses: n l sponding flue into the two lues of the first y CHARLES B. GILLSON,

mentioned pair and connection between the E. M. KLATCHER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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