US1638223A - Portable stove - Google Patents

Description

Aug. 9 1927.

T. A. TAYLOR ET AL PORTABLE STOVE Filed Dec. 27. 1921 IINVENTORS Wmdfy/w $11,: a v

A T ORXEYS Patented Aug. 9, 1927.

UNITED STATE,

5? PAT OFFICE.

THEODORE A. TAYLOR AND ANTON J", YEAGER, OF

wrsooNsI-N RAPIDS, Wisconsin,

ASSIGNORS TO PRENTISS-WABERS'STOVE COMPANY, OI WISCONSIN RAPIDS; WIS- CONSIN, A CORPORATION OF WISCONSIN.

PORTABLE STOVE.

Application filed Decemlien27, 1321. Serial m. 525,072.

This invention relates to improvements in portable stoves. a

It is an object of this invention toprovide in compact form a simple and effective gasoline stove, of such a design that the whole mechanism is self contained with in a box-like body, of about the size. and I appearance of a small suitcase, the arrangement being such that the stove may be made; ready for use simply by lifting the cover of the body or case, and, if desired, support ing the case upon a special set of detachable legs provided theretor. Y

It is a further object of this invention to provide a portable stove, in which the body; of the stove will comprise a neat carrying case with areasonabl-y smooth exterior contour, so that none of the operating mechanism of thestove will protrude in a way to catch the clothing or otherwise impedethe movements or" a person carrying theclosed stove. I

It is also an ob ect of this invention to provide a portable stove having a body adapted'to serve as'a carrying case, in which.

the disposition of the burners is such, that space is available within the case for cooking utensils, these utensils being accessible 113011 the lifting of the hin ed cookin to whereby the stove body is not weakened by the provision of doors in its walls.

"l "t l" t' 1 t ruitiei oo ec s 01 L118 inven-ion me 0 provide novel means for supporting the cover of the body portion of the stove to act as a table; to provide a stove havinga master burner, and one or more subord nate burners, particularly adapted for usev in aportable stove of this type, to provide a novel and centralized control for the burners,

of burners adapted to utilize fuel under pressure in combination with means for supplying such tuel, and a surrounding casing,

such that the existence ofstrong currents of Figure 1 is an isometric view of a portto provide a structure for the body of the stove, whereby the body may be made rigid at slight expense, and to provide a'set;

able stove. embodyingthis invention, as it appears when. closed for carrying.

' Figure.2 is an end elevation, ona smaller tatedgthru 45, from the position in which it v appears inFigures 2 and 8, thecookingftop ot the stove being liftedto expose the inte nor, 1 1

Figure 5 is a detail view of the mounting for th'e cover supporting members. V

Figure 6 is a detail view showing theinas ter; burner in end elevation.

Figure 7 is av detail, horizontal section thru the master burner in the axial plane of the-main fuel tube.

Like'parts are identified by the same reference characters thruoutthe several views.

The body 1 and coverQ, which comprise the casethat constitutes. the body of the stove are preferably made of sheet metal in the manner clearly indicated in the drawings. The side walls and ends of the body portion 1 are rolled at their upper iii-argins about a wire 3 which extends continuously. about the upper margin of the stove case, forming a re-intorcing head 4 of good ap pearance. The back wallot: the stove iscutaway adjacent'the beading wire 3at a pluralityot points. 5-to permit portion 6 of the cover. 2 to be folded-about the wire3, which is thereby constituted the pintle of. a hinge, upon which the cover 2 can swing. At its free margin the coverrQis rolled abouta re enforcing wire- 7 to for-ma head 8', similar to'the bead 4- upon the bodyv of the stove. The wire 7 also serves as a point of pivotal connection for the supporting members: 9, by means ofwh'icli the cover 2 may. be supported in a horizontal position when open. Itwill be-noted thatthe supports 9 are preterably made longer than the. height of the stove, so that they may be accommodated to inequalities in the surface UPOILWliiCli the stove rests. (See. Figure 2). The supporting members 9 are curved about tlie"1"'eeiiforcing wire 7' of the cover, in sucha man ner to permit themembers 9 to be foldedv witliin thecover when the stove is closed, in the manner shown in dotted lines in Fig ure 5. These supporting members 9 may also beemployed for supporting the cover 2 between open andcl'osed'positions to serve as a wind breaker or wind shield for the burners by engaging the lower ends of the supporting legs 9 with the inside of the front wall of the case 1 and the cooking top which will be presently described.

The cover 2 is provided with fastenings which may comprise resilient clips 10,

. brazed, riveted or otherwise secured to the margin of the cover, and adapted to be sprung into engagement with the beading at of the case.

The carrying case is provided with pressed out portions 11 in its bottom, thereby forming an opening between the portions 11 and the bottom of the case, into which may be inserted the detachable legs 12 shown in Figure 2. These legs raise the stove from the ground a sufficient distance to permit of the efiective-yentilation of the interior of the body of the stove, thru the openings 13 in its bottom. A handle 14 for carrying the stove is clearly shown in Figure 1.

The cooking top 15 may be mounted within the body 1 of the stove in anydesired manner, but is preferably hinged thereto at its back. It may, if desired, be provided with portions extended and bent into engagement with the reenforcing bead wire 3 of the box in the same manner in which the cover is fastened thereto, or it may be provided in the manner shown in the drawings,

with a separate supporting rod 16, which has a bearing in the side walls of the box. At its front margin, the cooking top is sup ported by the loop brackets 17, one of which comprises a bearing for the stems of the burner controlling valves. The cooking top, like the case of the stove may be made of sheet metal, but a set of cast iron grates 18 is preferably provided for the openings about the burners. An additional difference lies in the fact that the cooking top ispreferably galvanized, in order to withstand the heat, whereas the body of the stove is preferably painted inside and out with some suitable and characteristic color. These grates may be secured in place by any suitable devices, such as the clips 19, whereby they can be made replaceable in case of breakage.

The cooking top 15 is preferably provided witha number of openings 19 to permit the egress of air admitted to the interior of the case thru the holes 13 in its bottom, thereby encouraging the constant circulation of air thru the body of the stove, even though both of the burner openings are covered by utensils. v w

The means by which heat is supplied to the stove, of which the case or body has been described, include a fuel tank 20, a master burner 21, a set of valves 22 and 23, and one or more subordinate burners 24.

The fuel tank is preferably cylindrical and is supported at the outside of the end of the case by brackets 25. Its position insulates it from the heat developed by the burner, and also makes accessible the filling opening 26 and the gauge 27. The filling opening is preferably provided with a double cap 28, which -may be removed altogether to permit the introduction of fuel into the tank, or may be opened to a slight degree by rotating a valve 29 to permit air to be blown into the tank by any suitable pump, to provide operating pressure on the fuel. The gauge 27 is so positioned as to keep the operator constantly advised of the amount of pressure in the tank.

The fuel pipe 30 from the tank leads thru the wall of the body 1 of the stove, and the branch thereof extends upwardly thru the master burner 21, by the heat of which the fuel will be vaporized. The fuel line terminates in a T-fitting 32, at each side of which are the needle valves 22 and 23. The stems of these Valves are journalled in a bracket 17, already described and terminate in registry with openings 33 and 3 1, in the front wall of the box. The valve stems 35 are squared at their outer ends to receive a key 36, which is preferably chained to the case 1 and may be inserted thru the openings 33 or 3 1 into engagement with the desired valve stem. It will be clear that by means of this provision for operating the valves the ordinary projecting handle, which might so easily catch the clothing has been done away with.

The casings of the needle valves 22 and 23 terminate in jet-like members 33; Thus the vaporized fuel is directed from the valve 22 across an intervening air space into the interior of the master burner 21, from which it escapes thru a plurality of openings in the usual manner. The arrangement is such that the jet of fuel crossing the gap between the nozzle 28 and the burner 21 will become mixed with the proper amount of air to pro.- vide a combustible gas.

The master burner is provided at 10 with a cup into which gasoline may be poured and ignited to pro-heat the burner in the usual manner, for the initial vaporization of the fuel in that branch of the fuel pipe 30, which leads thru the burner to the valve.

The fuel vaporized within the master burner 21 may also be drawn from the T head 32 thru the valve 23, from which it is emitted in a jet which crosses an intermediate air space and is received into the pipe 41. The end of the pipe 11 may be supported by an ear 42 projecting radially from the other side of the head of the burner 21. The pipe is passed thru this car and is secured thereto by a set screw 43. The curve of this pipe is regarded as very important. The vaporized fuel mixed with suliicient air to make it properly combustible is received axially into the pipe, which almost immediately begins to curve very gradually until finally it is carried. into the subordinate burner 24, which may be of any ordinary design. It will be noted that sharp turns or angles are avoided in the' pipe 41, so that the impetus with which the vaporized fuel enters the pipe is sufficient to oause'it to travel the length of the pipe and enter the burner. Furthermore the pipe 41 is so disposed as to leave room between it and the front of the stove for the insertion of cooking utensils of considerable size beneath the burners into the bottom of the case.

We claim a 1. A portable folding stove comprising a case having an opening, a cooking top hingedly connected to the case, means within said case for supporting the cooking top in an operative position, a burner within said case, a valve associated therewith, and a valve stem for the valve positioned wholly within said case and extending through said supporting means to be aligned with" said opening in the case.

2. In a portable stove, the combination with a case and burners therein, of a cooking top within said case, a cover hingedly secured to said case and adapted when closed to protect said cooking top, a bead upon the exterior margin of said cover, a reenforcing wire core within said bead, a portion of said cover being cut away from said core, and a leg bent about said core in hinged relation thereto and movable about that portion of the core from which said cover is cut away, said leg being adapted in one position to support said cover horizontally and adapted in another position to abut part of the case to support said cover. between open and closed positions to act as a wind shield for burners within said case.

3. In a portable stove, the combination with a case and acover therefor, of means for hingedly securing together said cover and said case, and legs hingedly connected with the outer margin of the cover and arranged to support said cover horizontally from a supporting surface, said legs being longer than the vertical distance between side to said casing, a plurality of legs each hingedly secured to the opposite side of said cover and independently operable of each other, said legs being arranged to support said cover horizontally from the supporting surface and being longerthan the vertical distance between an open horizontal position of said cover and such supporting surface.

5. In a portable stove, the combination with a case, of a cover having one margin hingedly secured to said case, of a plurality of legs each hingedly secured to the opposite margin of said cover on an axis paralleling the cover axis and independently operable of each other. whereby said legs may be angularly adjusted to support said cover in a horizontal position from an irregular surface.

6. In a portable stove, the combination with a casing, of a cover having one margin hingedly secured thereto, a leg hingedly con nected to the opposite margin of said cover to swing to positions upon opposite faces of said cover whereby said leg may be adjusted to support the cover in a substantially horizontal open position, or to a position to support said cover between open and closed positions to serve as a wind shield, or to a third position to be folded within said cover, said leg being of such length as to support said cover in a substantially upright position between its said opened and closed-positions.

THEODORE A. TAYLOR. ANTON J. YEAGER.

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