US1014149A - Oven. - Google Patents

Description

11. 1. HBLMAN.

OVEN.

APPLICATION FILED rmm, 1911'.

Patented Jan. 9, 1912.

2 SHEETS-SHEET 1 R. P. HEL-MAN.

OVEN.

APPLICATION FILED 12mm, 1911.

1,014,149. y Patented Jan.9,1912

2 SHEETS-SHEET 2.

[Mfr/e556;

RALPH I. HELMAN, OF LOS ANGELES, CALIFORNIA.

OVEN.

Specification of Letters Patent.

Application filed February 7, 1911. Serial No. 607,078.

To all whom it may concern:

Be it known that I, RALPH P. HELMAN, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, having invented new and useful Improvements in Ovens, of which the following is a specification.

This invention relates to ovens, and more particularly to ovens for heating and cooking and allied domestic purposes; and it has for its object to provide improvements in ovens which will be superior in point of relative simplicity and inexpensiveness of construction, economy in the use of heat units, speed and thoroughness in operation, and facility in use and handling, storage and shipment, and which will be generally superior in efiiciency and serviceability.

With the above and other objects in View, the invention consists in the novel provision, construction, formation, combination, association and relative arrangement of parts, members and features, all as hereinafter described, shown in the drawings and finally pointed out in claims.

In the drawings: Figure 1 is a perspective View of an oven constructed and organized in accordance with the invention, the same being broken away in part for clearness of illustration; Fig. 2 is a detail fragmentary view of a lining member of the oven; Fig. 3 is a fragmentary horizontal sectional view taken adjacent to the lower portion of the oven; Fig. 4 is a vertical transverse sectional view taken adjacent to the rearward portion of the oven; Fig. 5 is a vertical sectional view taken at right angles to the showing in .Fig. 4; and, Fig. 6 is a detail fragmentary view illustrating the means of detachable connection of parts of the oven structure.

Corresponding parts in all the figures are denoted by the same reference characters.

Referring with particularity to the drawings, the oven comprises in the main rectangular body members including a rear member 7, a front member 8, opposite side members 9 and 10, a top member 11, and a bottom member 12. The front member 8 is provided with a rectangular opening to provide access to the'interior of the oven, said opening being adapted to be closed by a swinging door 13 having a locking knob or thumb piece 14 for holding the same in closed. position. The bottom member -12 is provided with a .transverse relatively narrow burner opening 15 extending substantially between the side members 9 and 10, and ,a suitable gas or other burner 16 is disposed directly beneath the same, a flue casing B being disposed directly above the same and resting uponthe bottom member 12. The flue casing B is open at top and bottom andis builtup of a front member 17, a rear member 18, 'and opposed side members 19 and 20 extending between the front and rear members. The flue casing .B tapers upwardly with respect to the side members 19 and 20 which are in synclinal relation, the rear member 18 is slightly spaced from the rear member 7 of the oven frame, and the forward member 17 of the flue casing is inclined rearwardly and upwardly, all as clearly shown in the drawings, producing a general upward tapering of the entire flue casing which is conducive to the production of strong flue action. Within the walls or upright members of the oven frame organized as above, are disposed upright lining members, 21, 22 and 23, each slightly spaced from the respective body members 7, 9 andlO, and resting upon the bottom member 12; asbestos or similar heatinsulating sheets 24 being disposed in the pockets or spaces so formed and facially out of contact with the inclosing surfaces. Upon the inner surfaces of the lining members 22 and 23 are located horizontal cleats 25, in pairs the members of which are opposed; and upon 'the respective pairs of cleats are mounted shelves 26, 27 and 28,

in downward enumeration, the same being horizontally disposed and extending between the opening closed by the door 13 and the forward member. or wall-17 of the flue casing B. i

The upper shelf 26 is foraminous or of open formation, so as to freely permit the passage of heat waves or currents through the same, whereas the shelves 27 and 28 are of unbrokenformation, the shelf 27 being slightly spaced from the opening in the oven member .8, which is. closed by the door 13, and the lower shelf 28 being slightly spaced from the forward member 17 of the flue casing B.

The forward wall 17 of the flue casing B is provided with a plurality of vents 29 which are adapted to register with corresponding vents 30 in a slidable damper Patented Jan. 9, 1912.

plate 31 applied to the outer face of the member 17, and provided with a finger piece 32 for the manipulation thereof.

At one side, as 9, of the oven frame, is disposed an upright boiler or water container 33 with which communicates a heating'coil or pipe 34 which is disposed directly above the bottom member 12 of the oven frame, at both sides of the burner opening 15.

, The burner 16 is provided with a supply pipe 16 leading to any suitable fuel supply.

The door 13 is provided with double walls forming an internal flue chamber 13 terminating at the upper portion of the door in vents 13", the rearward portion of the door being provided with an elongated transverse vent 13 above which is disposed a horizontal downwardly and inwardly inclined deflector 13 The various oven frame members 7, 8, 9, 10, 11 and 12, as well as the members 17, 18, 19 and 20 of the flue casing B, are detachably connected, so as to be readily reduced gto knocked-down condition, by a species of lap joint, C, shown in detail in Fig. 6, and formed by producing a U-shaped joint member 35 upon one of the members to be joined, and a hook-shaped joint member 36 upon the other member to be joined, said joint members being coengaged and compressed into compact relation and then positively united and held in detachable condition by a suflicient number of stove bolts, or the like,

37. This form of joint 0 is carried into use throughout the entire organization of the oven frame and the frame of the flue casing B, with relation to the members and parts thereof above recited, and is clearly shown in the drawings. By withdrawing the bolts 37, the joints 0 may be opened and the parts and members relatively separated so that the six frame members of the oven, that is the four sides and top and bottom, and the four frame members of the flue casing, may all be taken apart or detached each from the others, and the entire oven as described reduced toknocked-down condition, inclusive of the lining members 21,- 22

and 23 and the shelves 26, 27 and 28, the

boiler or water container 33 being of course detached from its heating pipe 34. The heat insulating strips 24 may also be compactly disposed with the other; parts and ,;members when the oven is in knocked-down condition. The lining members 21, 22 and 23 are provided at the top and bottom with laterally directed flanges 38, as indicated in Fig. 2, which respectively bear against the rear member 7 and the side member 9 and the side member 10 of the oven frame, keeping the lining members spaced from said oven frame members, and producing dead air spaces within which the heat insulating sheets 24 are disposed. These flanges and lining members are not, however, concerned in the invention.

A number of vents 39 may be formed in the side and rear oven frame members to introduce air beneath the bottom member for supporting combustion at the burner 16. These may extend through the flanges on the bottom member 12.

The operation, method of use and advantages of the improvements in ovens constituting the invention will be readily understood from the foregoing description, taken in connection with the accompanying drawings and the following statement: It has been pointed out in what manner the entire structure may be reduced from operative form and organization to collapsed or knocked-down condition, and this will be manifest from what has gone before. Likewise, it .Wlll be manifest that the heating currents or currents of heat units produced at the'burner 16 will traverse the flue casing B upwardly, pass through the open formation of the upper shelf 26, pass forwardly of the intermediate shelf 27, pass rearwardly of the bottom shelf 28, and thence enter the hollow door 13 and be discharged upwardly through the flue 13 therein and outwardly at the vents l3 at the top thereof. The heating currents will thus traverse a to and fro course within the interior of the oven, passing into intimate contact with and directly affecting articles or utensils placed within the oven upon the shelves and upon the bottom member of the oven. The upwardly tapering form of the flue casing B enhances the movements of the heating currents, and incidentallythe heat produced at the burner gives a supply of hot Water in the container 33 by means of the heating coil or pipe 34.

The dead air spaces between the lining members and the frame members of the oven, together with the insulating sheets 24, obviate almost entirely any losses of heat units by radiation, and the efliciency of the oven as a whole, with relation to economy in fuel consumption and complete utilization of heat units, is high.

It is manifest that by a particular and peculiar formation, combination and detachable connection of parts, together with arrangement thereof, I am able to provide an oven which is of high economy and efliciency in service and at the same time may readily ciation, and relative arrangement of parts, 7

members and features shown and described; but reserve the right to vary the same, in adapting the improvements to varying con ditions of use, without departing from the spirit of the invention or the terms of the following claims:

Having thus described my invention, I claim and desire to secure by Letters Patent:

1. An oven provided with an interiorly located flue opening into the oven; in combination with means for causing heat units to traverse an irregular course within the oven; said last named means comprising spaced shelves one of which contacts with the flue and the other of which .is spaced from the flue.

2. An oven provided with a flue disposed interiorly thereof and opening into the oven, and with a door having an interior flue communicating with the interior of the oven, in combination with means for causing heat units to traverse an irregular course within the oven to and fro between the flues.

3. An oven provided with an interiorly disposed flue opening into the oven and with a door spaced therefrom, the door being provided with a flue chamber communicating with the interior of the oven, spaced shelves within the oven one of which contacts with the flue and the other of which is spaced from the flue.

4:. An oven provided with a bottom member having a transverse burner opening, a burner applied at the burner opening, an upright flue within the oven above the burner opening and opening into the oven, an oven door spaced from the flue and having a flue chamber communicating with the interior of the oven, there being vents for the flue chamber of the door at the upper and lower portions thereof, and a deflector upon the door above the vent at the lower portion of the flue chamber.

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

' RALPH P. HELMAN.

Witnesses:

RAYMOND W. BLAKnsLnn, E. G. MoisKns.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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