US1547522A - Oven - Google Patents

Description

July 2s, 1925. 1,547,522

W. E. PATCH OVEN Filed June 2, 1924 2 Sheets-Sheet 1 July 28, 1925.

1,547,522 w. E. PATCH l OVEN Filed June 2, 1924 2 Sheets-Sheet 2 BY M' Patented Julyl 28, 1925. .i

UNITED STATES PATENT oFFlCE.

WILLIAM E. PATCH, F ST. LOUIS, MISSOURI.

OVEN.

Application led .Tune 2, 1924. SerialvNo. 717,296.`

:To all whom `t may concern: i

`ment in Ovens, of which the following 1s av specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates to a certain new and useful improvement in heating ovens.

In United States Letters Patent No. 1,416,- 865, granted to me under date of May 23, 1922, I disclose a method or process for ef- .fecting under the action of heat in a closed oven the de-enameling of metal articles, and my present invention hasfor its chief ob ject theprovision of an eilicient oven es? pecially adapted, in furtherance of such process or method, for the heat treatment of enameled. ware and articles for effecting or accomplishing the de-enameling thereof.

With the above and other objects in view,

my present invention resides in the. novel features of form, construction, arrangement,

and combination of parts hereinafter described and pointed out in the claims.

In lthe accompanying drawings,

' Figure 1 is a perspective view of a heattreating oven embodying my invention;

Figure 2 is a vertical sectional view of the oven on approximately the line and looking in the direction of the arrows 2-2, Figure 1; Y

Figure 3 is a'broken plan view, partly in section, of the oven;

Figure 4 is a fragmental rear elevational view of the oven;

Figure 5 is an enlarged vertical sectional view of the oven on approximately the line and looking in the direction of the arrows vention, the oven A is preferably in the form of a generally sheet metal rectilinear shell or structure suitably supported on legsA 1 and comprising a bottom wall ,2, opposite side walls 3--3, a to wall 4, and a rear wall 5, all suitablyrigid y joined together and eachbeing of hollow or chambered formation for housing suitable heat-retaining insulation 6.A Formed in the top 'wall 4, is preferably a valve or damper controlled air and vapor vent 7.

Hinged to the top wall 4 at its forward margin, as at 8, for swingably closing the front end of the oven, is a door 9 adapted `when closed to normally flatwise abut at its margin in heat-retaining relation against the front ends of the top, side, and bottom walls of the oven. Frequentlyunder the intenso heat of the oven or fromv other causes, thel normal tight closing relation between the door 9 and the several walls of the ove-.1 proper is affected, in which event separate angle- members 10, 111l, and 12 disposed at and vhaving slot and pin and nut connection at one leg as at 13, with the front end portions of the top, side, and bottom walls, respectively, of the oven, are independently adjusted to provide vat their other leg a fiat surface for engagement with the marginal portion of the door 9 to effect a heat retaining joint between the oven and the door when the door is closed. And provided upon the inner face of the. door 9 to fit when 'the door is closed within the frame or enclosure formed by the several angles l0, 11, and 12, is a hollow compartment or cham- ,ber 14 also containing suitable insulation 6 for increasing heat retention by the door 9 when closed.

'Suitably' supported transversely upon the rear wall 5 of the oven, is an aligning pair ,pipes 15 in'suitably spaced relation and presented towards the oven, are outlet pipe-sections 18, the bores of which are each partl)T reduced, as at 19, forming substantially closing valve-seats for needle-valve members 20 seated for individual manipulation in the respective pipe-sections 18 for selectively controlling and regulating the flow of Igas from the pi es y15 to the several sections 18.

Disposed longitudinally in spaced relation within the oven and upon its lower or bottom wall 2, are burner-pipes 21 capped or otherwise preferably permanently closed at their forward end, as at 22, and each formed Within the oven with a longitudinal series of 4upwardly presented jet-orices 23. The

several pipes 21 align with lthe several'respective pipe-sections '18 and attheirV 'rear ends project exteriorly of the oven for supporting mixin v-chambers 24, which latter at their end-wa s 25 have threaded engagement with the respective ipe-sections 18, as best seen in Figure 7. T 1e end walls l25 of the several mixing-chambers '24 are formed with suitable cut-outs to provide air-entrance openings or inlets, 26, anddisposed for threaded movement upon the several respective pipe-sections 18 for adjustably o ening and closing the a ertures 26, are dlsk-valves 27. I might 1ere state that, while not specifically shown, the Vopenings in the oven end-wall `5 for the several burner-pipes 21 are by means'of gaskets or l the like made gas-tight.V

Disposed lengthwise and preferably loosely for removal and replacement Within the oven, is a series of suitably elongated substantiall inverted channel-shaped plates or so-calle burner-boxes 28 that rest at their angesor side walls upon the bottom wall 2 of the oven and bridge the several burner-pipes 21, as best seen in Figure 2,

each plate or box 28 being preferably strengthened intermediate its side flanges by a supporting longitudinal wall 29 that di-V vides its channel into substantially a pair of burner-pipe compartments. r

In use and operation, the several plates 28 perform the function, as it may be said, of a false removable oven bottom, are heated directly without loss ofl heat by the burning or ignited gas iowing from the jetorifices 23 of the several pipes 21, and are thus adapted to support the work within the made and substituted for those herein shown oven substantially directl over, yet without impingement thereupon y, the gas-flames. The oven proper is also substantially gas or vapor tight and through its novel construcand described without departing from the i nature and principle of my invention.

Having thus described my invention, what I c aim and desirevto secure by Letters lPatent is:

41. A heat-treating oven comprising a di-s osed lon itudinally `in spaced-relatlon w-it in' the c amber and upon the bottom wall of the shell, and 'a series of work-supporting plates disposed within the shell over..`

bottomvwall thereof, and a series of burnerpipes disposed upon the bottom wall ofthe shell and within the channels of the plates.

shell, a; series of perforated burner pipes .l

3. A heat-treating oven comprising a shell, a series of inverted work-supporting channel-shaped plates disposed within the shell and resting at their anges upon the bottom wall thereof, a series of burner pipes disposed upon the bottom wall of the shell and within the channels of the plates, and

means for individually controlling the low of combustible iiuid into the several pipes.

4. A heat-treating oven comprising con-4 nected top, bottom, .and side walls, a door hinged to the oven for closing an end thereof, and angle-members disposed upon said walls for forming a kheat-retaining joint with the door when the door is closed.

5. A'heat-treating oven comprising connected top, bottom, and side walls, a door hinged to the ovenv for yclosing an end thereof, and angle-members adjustably disposed upon said walls for forming a heat-retaining joint -with the door closed. v

6. A heat-treating oven comprising a shell, a plurality of separate inverted worksupporting channel-shaped plates disposed in a lon itudinal series within the shell and removaly resting upon the bottom wall thereof, and aseries of burner pipes disposed upon the bottom wall of the shell andA within the channels of the plates.

In testimony whereof, I have signed my name to this specification. y

' f WILLIAM E. PATCH.

when the door is

Images