US651786A

US651786A - Bake-oven.

Info

Publication number: US651786A
Application number: US73883399A
Authority: US
Inventors: Robert W Turner
Original assignee: EARNEST H TURNER; ROBERT T TURNER
Current assignee: EARNEST H TURNER; ROBERT T TURNER
Priority date: 1899-12-01
Filing date: 1899-12-01
Publication date: 1900-06-12
Anticipated expiration: 1917-06-12

Description

No. 65,786. Patented June 12., 1.9.00.

R. W. TURNER.

BAKE OVEN. (Apblication filed Dec. 1 1599.)

(No Modgl.)

u w m o f .r. an.

: NORRJS rsrzns my. Pncnmum NITED STATES PATENT OFFIC ROBERT W. TURNER, OF WALNUT SPRINGS, TEXAS, ASSIGNOR OF ONE-HALF TO EARNEST H. TURNER AND ROBERT T. TURNER, OF SAME PLACE.

BAKE-OVEN.

SPECIFICATION forming part of Letters Patent No. 651,786, dated June 12, 1900. Application filed December 1,1899. Serial No. 738,333. momma.)

To all whom it may concern;-

Be it known that I, ROBERT W. TURNER, a citizen of the United States, residing at Walnut Springs in the county of Bosque, State of Texas, have invented certain new and useful Improvements in Bake-Ovens, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to bake-ovens, and particularly to an oven through which a current of cool or heated air may be passed to maintain the same at a desired temperature for either purposes of baking, evaporating, drying, or roasting substances therein, as may be found desirable.

The invention has for an object to provide a structure by which a current of either cool or heated air may be passed through the hotair chamber and regulated in amount, so as to produce in said chamber any desired degree of temperature, thus adapting the chamber for a wide range of uses inwhich heat is applied to a greater or less extent to a substance to be dried or cooked.

A further object of the invention is to provide means by which the air may be introdu-ced under pressure to the compartments temperature of said chamber or maintaining a predetermined degree of heat therein.

Other objects and advantages of the inven- I tion will hereinafter appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.

The drawing forming part of this specification illustrates a longitudinal vertical section through the apparatus, with a portion of the hot-air chamber in side elevation.

Like letters of reference indicate like parts in the drawing.

As illustrating a desirable form of the apparatus a-cold-air chamber A has been shown, which may be of any desired configuration and is fed by means of a suction-fan A, having an inlet A extending outward from the closed chamber A and a discharge A within said chamber. This chamber may be of any desired construction or size, dependent upon the amount of air to be supplied to the hotair chamber B, with which the cold-air chamber communicates by means of one or more conducting-pipes G. This pipe is provided with a coiled portion 0 of any desired extent or configuration, located within a heating apparatus D. This apparatus may be of any preferred form or character; but for the purpose of illustration oil-burners D have been shown beneath the coiled portion and .supplied from a reservoir D above the same, while the chamber D is supplied with a suitable stack D to remove therefrom unconsumed products of combustion and provide the necessary ventilation.

The hot-air chamber B is provided with a series of compartments B, with which the conducting-pipe C communicates by means of a branch 0 provided with a regulating- Valve 0 thus introducing the'heated air from the conducting-pipe at the lower portion of the compartment. At the upper portion of the compartment a discharge-pipe E is provided, which communicates with each of the compartments B by means of a branch E, provided with a valve E The dischargepipe E communicates with the cold-air chamber by means of a valved connection E and with the atmosphere by means of a similar connection E whereby the heated air returned from the oven may be permitted to escape through the valve E when the valve E is closed, and when said valve E is opened the pressure in the cold-air chamber will be reduced.

For the purpose of introducing cool or cold air in the compartments of the heated-air chamber for the purpose of moderating the temperature thereof or maintaining it at a predetermined degree a conducting-pipe F is provided and communicates with the upper portion of each compartment by means of a valved connection F. This pipe also is provided with a valve connection I? at its j uncture with the cold-air chamber. 7 The air under pressure in this chamber can thus be introduced into the hot-air compartments by a proper regulation of the valved connections F. At the lower portion of each oompartment a cold-air-discharge pipe H is provided with a valve H, by-which a downward ourcompartments provided with a rent of air may be produced through the compartment for the purpose of cooling the same,

The hot-air compartments may be provided with any suitable means for supporting therein the material to be vaffected by the heated air. For instance, a roasting-drum G may be placed in one compartment and the other trays or baskets G, which support the material to be heated and permit the air to pass freely around the same. These trays are provided with suitable front plates G by which a tight closure is effected, and with a transparent opening G by means of which the contents thereof may be inspected without removing the trays. The hot-air compartments may also be provided with a suitable thermometer G for indicating the degree of heat in each compartment, and it will be obvious that different degrees may be maintained in each of the compartments, so that diiferent classes of work may be performed by the same apparatus at the same time. ing-cylinder may. be rotated by any desired means, as may also the fan for producingan air-pressure wlthin the cold-air chamber.

In the operation of the heating-chambers the valve 0 will be opened, as may also the valves E thus admitting only heated air to the compartments and raising the tempera? ture thereof'to the desired degree. If itrbe desired, however, to. remove from the com partments the'airwhen ladened with moisture or odors from .the material cooked'or dried, the valve IE will be closed, and the heated air then escapes through the valve E tothe outer atmosphere. Now'if it be desired to reduce the temperature of the oven or maintain the same at a certain degree the hot-air valve 0 may be partly or completely closed and the cold-air valve F opened. This introduces cold air into the compartments and reduces the temperature thereof. If it therefrom any heated air.

purpose.

be desired to reduce this temperature quickly,

the coldair-discharge valve H may be opened at the bottom of the compartment, thus creating a downward current of cold air through the compartment and effectually removing It is also found desirable when introducing cold air to close the valve E of the upper discharge-pipe.

It will-be obvious that the structure of the of any desired non-combustible material and properly insulated to prevent the escape of heat, while the arrangement of valved conducting-pipes issuch that any desired degree of heat maybe maintained in each of the compartments independent of the remaining. compartments, thus adapting the apparatus fordiflt'erent simultaneous op'erationssuch as drying, roasting, and bakingwhile .by a proper adjustment ofthe valves all of. the compartments maybe used for any preferred rIt'will be obvious that changes maybe made inthedetailsofi constructionand configura reticulated The roasttion of the several parts of this apparatus -without-departing from the spirit of this invention as defined by the appended claims.

pressure of airtherein, of a' closedyhot-air chamber, a conducting-pipe connecting said chambers, means for heating said pipe, a hotair-discharge pipe leading from said hot-air chamber, an independent cold-air pipe com municating with said cold and hot air chambers, and a cold air discharge pipe at the lower' portion of said hot-air chamber: substantially as specified.

3.. In a bake-oven, the combination with a cold-air chamber and means for producing a pressure of air therein, of a heated-air chamber provided with compartments, a conducting-pipe provided with a heating-coil and ex tending from said cold-airchamber tothe lower portion of said compartments, means for heating said coil, and a 'cold air feed-pipe communicating with the upper portion of said compartment and with the cold-air chamber; substantially as specified.

i 4. In a bake oven, the combination with a cold -air chamber and means torproducing a pressure of air therein, of a heated-air cham ber provided with compartments, aconductr ing-pipe provided with aheating-coil and extending from said cold-air chamber-to the lower portion of said compartments, means for heating said coil, a discharge-pipecominunicating with the upper portion of said compartment, and a coldair pipe communicating with'said, cold-air chamber and with the'upper portion of said compartments 3 substantially as specified. I

5. In a bake-oven, the combination'with a cold-air chamber and means for producing a pressure of air therein, of a heated=air chamber provided withcompartmentm'a conducting-pipe provided with a heating-coil and extending from said cold-air chamber to the lower portion of said compartments, means for heating said coil, a discharge-pipe comcompartment, acold-air pipe communicating with said cold-air chamber and with-the upper portion of said -compartments,-a cold-air discharge at the lower portion, andsuitable valves controlling the communication of i all of said pipes with said compartmentsysub- ,stantially as specified. r

' ,In abake-ovelythe combination with a cold-air chamber and means for producing a pressure of air therein of a heated-air chamber provided with compartments, a conducting-pipe provided with a heating-coil and extending from said cold-air chamber to the lower portion of said compartments, means for heating said coil, a discharge-pipe communicating with the upper portion of said compartment, a cold-air pipe communicating with said cold-air chamber and with the up per portion of said compartments, a cold-air discharge at the lower portion, suitable valves controlling the communication of all of said pipes with said compartments, and reticulated supporting-trays within said compartments; substantially as specified.

7. In a bake-oven, the combination of a coldair chamber, a pressure-fan located therein, a hot-air chamber provided with a 20 series of compartments, a coiled conducting- ROBERT W. TURNER;

Witnesses:

N. A. MASSEY, J. A. MASSEY