US1140154A - Heat-retaining oven. - Google Patents

Description

A. P. HAWLEY.

HEAT RETAINING OVEN.

APPLICATION FILED JUNE 3.1914.

WTNESSES /NI/ENTOR THE NORRIS PETERS CO, PHOTO-LITHO.. WASHINGUN. D. C4

- citizenof the United States,

wm@ STATES @www ANNE i?. HAWLEY, or BRrnGEPoaT, CONNECTICUT.

HEAT-RETAINING OVEN.

Specification of Letters Patent.

Application led June 3, 1914. j* Serial No. 842,578'. Y

'An object of this invention is to'c'onvservek the heat within said oven, yet allowingitto freely flow to all portions thereof..

Another object of this invention 1s to have v a damper arrangement wherebysaid dam- I so pers are opened when in use and closed when not in use. And` still another object of this inventionis an automatic arrangement whereby the supply valves are guarded according as to whether the stove is 1n use or not."

These and further objects in view will be,

developed as the specification proceeds and I will now proceed to disclose the preferred embodiment of my invention.

I do not desire to be limited to the structure shown which is but a preferred form, but claim whatever can be included within the scope of the claimappended hereto. v

Similar characters of reference refer to similar parts throughout the several views,

in which,

Figure 1 is a sectional side elevation of my device. Fig. 2 is a bottom plan view showing position. p

1 is my oven proper showing the insulator 2 between double Awalls v3 and t thereof, said insulators beingiof any preferred material, preferably of asbestos. are positioned a number of shelves 5 which are retained'inV `position by means ofthe flanges or brackets 6 as can clearly be seen in Fig. 1 of thedrawings.V The front and rearv edges 7 and 8 respectively of these shelves are recessed or offset as'at9' and 10, the purpose of this being to allow the heat to pass from the burner flueup' around the shelves so that the heat can reach all parts of thev oven. A number vof apertures 11 are spaced at desiredpointsin the bottom of the oven while centrally vof said bottom is an vthe oven as at 16 the damper attachment in openl Within said oven ing the check valves aperture through which a bolt or other'suitable fastening means 12 is run, on which is plvotally mounted my damper device 13, this damper devicehaving a multiplicity of blades lt suitably positioned vto close the said aperturesll. The ends of the blades 11 are -guided and protected .by means of slottedv brackets 14 which n project down# wardly from the bottom VVofthe stove, the ends of the bladesl playing between the bottom of the 'stove andthe inner surface-of the'brackets forming the slot therebetween. From one of said arm l1 is extended and bent upward at right angles to playvalong the rearside` of bent outward at right angleshaving the rtree.

ratented'nay 1s, 1915- blades 114: is connected fa Vcoupling member l5 or, if it is desired, the

in Fig. 1. Theend 16'of this arm or of the couplingmember l5 is aperture 18 runningtherethrough. A dam* per attachment flange 20 is rigidly connected to the parts 17 by means of a rivet orv other suitable fastening device as can clearly be seen in Fig. l ofl the drawings. i i through a suitable slot 22 through the smoke flue 23 and is adapted to cover the vent`24fV j l inthe back of the member 19 is guided by the bracket 2.5. n

,Attached to the member 14 which covers o ven. The end of the into operative position 19 having an outturned 8o l ThisV member 19 runs the apertures 11 near the front of the bottom of the oven, is an operating arm 26 hav- 1 ing a manipulating handleV 27 thereto. To the top portion of my member 26 I attach a guard or checkk device .28. Thisl guard or check device controls the operationlof the supply valves 29 and 30 respectively.

In operation` when the oven is desired to t be used, the lhandle 27 isV grasped and@y thrown toone side thereby moving the damper 13 to open the apertures 11 in the bot` tom of the oven as `can, clearly 'be seen on perusal of Fig. 2.v This act, .at the same time throws over the 279 andV 30, allowing them to be turned'to vsupply gas to the burners 81 and 32 which are centrally placed 'i ,i y f j near'the bottom of the oven as shown in Fig. 1. lThis movement of the damper 18 vat Vthe same lmoment moves the damper member 19 at the back of the oven thereby opening the vent 24.. From its construction this damper has not a pivoted motion but a guard 28 thereby free-pV shifting` motion moving in unison with the damper 13.` These ,devices allow air to enfvalves Q9 and 80 so ter the oven, supplying the necessary oxygen to the fuel burning from the member '31 and 32, thereby suppl-ying `heat to all parts of the oven, the same passing through the offset portions 9 and l0 of the shelves '12 and then out through the vent 9A and eX- hausted through the pipe 33.

When the oven is not desired to rbe used, the supply valves Q9 and 30 are given a 90o turn thereby Cutting off the supply vof gas to the dampers from the feed pipe 34k. The manipulating handle is then ygrasped and thrown in the opposite direction. This act closes all the apertures inthe front of the oven and the vent in the back of the =oven at the same moment, and simultaneously throws the guard 28 in front of the supply thatethese can not be manipulated while thedampers are closed.

Having vdescribed my invention what I claim as new and desire to secure Letters Patent upon is:

Copies of 'this patent ymay be obtained for A device of the character described comprising a stove having a plurality of groups off apertures through Ithe lbottom thereof at widely separated points, each group consisting of a plurality of apertures positioned approximately at right angles to the edge of the bottom, a bracket having a slotted portion and two offset attaching end portions positioned adjacent each group at approximately right-angles thereto and parallel with said edge, and a plurality of oppositely disposed damper blades adapted to close .the apertures in each group, .the ends of each blade playing in said brackets.

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

CORNELIA B IIAWLEY, GEORGE W. HAWLEY.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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