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Publication numberUS726828 A
Publication typeGrant
Publication dateApr 28, 1903
Filing dateJan 31, 1903
Priority dateJan 31, 1903
Publication numberUS 726828 A, US 726828A, US-A-726828, US726828 A, US726828A
InventorsGeorge J Schmid
Original AssigneeJacob Schmid, George J Schmid
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 726828 A
Abstract  available in
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Description  (OCR text may contain errors)

l No. 726,828. y PATBNTED APR.. 28.1.1903.:



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SPECIFICATION forming part of Letters Patent No. 726,828, dated April 28, 1903.

Application filed January 31, 1903. Serial No. 141,259. (No model):

To a/ZZ whom t ma/yconcern:

Be it known that I, GEORGE J. ScHMTD, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful- I1n'. provements in Ovens; and I do hereby de clare the following to be a full, clear, and'exact description of the invention, such as willV enable others skilledin the art to which it appertains to make and use the same, vreference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in ovens of the class more particularly adapted for use in connection with gas or gasolene ranges; and it has for its object to provide simple and efficient means for regulating the,

heat within the oven, whereby the said heat may be caused to enter either the upper orH the lower portions of the same, as itis `de" sired to throw the heat on the top or bottom of the article being baked, or it may be so regulated as to equalize and make the heat uniform in all parts of the oven.

While the essential features of my invention are necessarily susceptible of modification, still the preferred embodiment thereof is illustrated in the accompanying drawings, in which- Figure 1 is a front perspective view of my improved oven, the door thereof being open and a portion of the front broken away to show the manner in which the heat is regulated therein. Fig. 2 is a vertical section of the same, and Fig. 3 is a perspective view of the heat-regulating slide.

Like figures of reference mark the sanney parts in all the figures of the drawings.

Referring to the drawings, 1 represents the top, 2 the sides, 3 the front, 4 the back, and 5 the door, usual to ovens of this class. An inner casing 6 is secured within the outer oasing of the oven and is divided, by means of the partition 7, into the compartment 8, which is the oven proper, and` the compartment 9, which forms what I would term the firebox of the oven, the bottom thereof being provided with an opening (not shown in the drawings) to adapt it to set over the burner of the range` to admit the blaze therein. In the compartment 8 of the oven any desired number of the'shelves 10 maybe provided to suit the convenience or size of theoven.

It will be noticed that the/sides 2 of the Voven are soformed and shaped as to form the chambers 11 Vbetween them 'and the sides of the inner casing 6, the said chambers extending nearly to the top and bottom of the oven. A series of ports or openings 12 and 13 are th'e'upper and lower portions of the sides of the inner casing 6 and establish Acommunicationbetween the chambers 1l and the interior' of lthe compartments 8 and 9 of "the oven,.respectively. The partition 7 is also provided with-a series of ports or openings 14 on either side thereof, which establish communication between the compartments 8 and 9 of the oven.

In order to control the ports 13 of the casing 6 and the ports 14 of the partition 7, I secure within the compartment 9 the heatregulating slide 15, (shown in Fig. 3,) which is made shorter than the width of the oven to kenable it to have a limited forward and rearward movement therein. The slide 15 is formed with thesupporting-anges 16 and is adapted to iit snugly against the under surface of the partition'7 and the sides of the casing 6. A series of ports 14', corresponding to the ports 14 in the partition 7, and a series of ports 13,correspondingto the ports 13 of the casing 6, are provided in the horizontal and anged portions of the slide 15, respectively. The pojrts 13' and 14 are so arranged'in the slide 15 with relation to the ports 13 and 14 that when the ports 13l communicate with the ports 13 of the casing 6.

the ports 14 in the partition 7 are closed, the ports 14 of the slide 15 being then inthe position shown by dotted lines in Fig. 1, and vice versa.

The movement of the slide 15 is regulated by the' handle'17, which extends through a slot 18, provided in the front of the oven, and has its inner .end connected in any suitable manner to the lip 19, formed on the slide 15. It will thus be apparent that when the slide 15 is drawn iiush with the front of the oven the ports 14 will be closed and the heat from the burner over which the oven is placed will ICO be forced to nd an exit from the compartment 9 through the ports 13, which are open, as shown in the drawings, into the chambers 11 and from thence, through the ports 12, into the upper portion of the compartment 8. If it is desired to have the heat enter from the bottom of the oven instead of from the top, the slide 15 is pushed to the rear, thus closing the ports 13 and opening the ports 14, or the ports 13 and 14 may each be left halt'- open, so that the heat will be equalized in all parts of the oven.

XVhile I have described the oven as having an inner casing 6, it is not necessary that this should extend entirely around the inner portion of the oven, as the main object of this casing is to form the inner sides of the chambers 11. I prefer this construction, however, as a double casing is thereby provided and the heat more efciently retained within the oven.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an oven, a series of chambers formed on the sides thereof, a partition dividing said oven into an upper and a lower compartment, communication provided between said chambers and said compartments, communication between said compartments through said partition, and means for alternately opening and closing the communication between said compartments by way ot said chambers and said partition.

2. In an oven, a partition, a series ot' ports provided in said partition, chambers on the sides of said oven, a series of inlet-ports provided to said chambers on one side and a series of outlet-ports on the other side of said partition, a movable element adjacent to one side of said partition adapted when moved to alternately open and close the inlet-ports in said chambers and the ports in said partition, and means provided for moving said element.

3. In an oven of the class described, a partition dividing said oven into the compartments 8 and 9, communication provided between the compartment 9 and the lower portion of the compartment 8, communication provided between the compartment 9 and the upper portion of the compartment 8, and means provided for alternately opening and closing said communications for the purposes described.

4. In an oven, a partition, the compartments 8 and 9 formed by said partition, a series of ports in said partition, a series of outlet-ports in said compartment 9 communicating with the upper portion of said compartment 8, and a movable element provided with openings to control the passage-ways through said series of ports and alternately close the same.

5. In an oven, a partition 7, compartments 8 and 9 formed by said partition, a series ot' ports 14 provided in said partition, chambers ll, a series of ports opening from said compartment 9 into said chambers and a series of ports opening from said chambers into said compartment 8, a flanged slide l5 in said compartment 9, openings provided in said slide to alternately register with the ports opening into said chambers and the ports in said partition, and means for moving said slide for the purpose described.

In testimony whereof I have hereunto signed my name to this specification in the presence of two subscribing witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2666425 *Jul 25, 1950Jan 19, 1954Hastings Jr Earl GrantBarbecue oven
US2715897 *Oct 25, 1952Aug 23, 1955Clarence D NewlandOven for pit barbecue
Cooperative ClassificationF24C15/08