US1540077A - Portable camp stove - Google Patents

Description

June 1925. 1,540,077

F. G. KLlNERT PORTABLE CAMP STOVE Filed Nov. 25,. 1924 4 Sheets-Sheet 1 F [5.1

mws/v 70/2 WITNESSES 4 1,540,077 F. G. KLINERT' ORTABLE CAMP STOVE Filed Nov. 25, 1924 4 Sheets-Sheet 2 I, 3 40 INVENTQR Z4 Mgm June 1925.-

F. G. KLINERT PORTABLE CAMP STOVE Filed Nov. 25, 1924 4 Sheets-Sheet 3 FIGEI.

R m m w June 2, 1925.

' 1,540,077 F. G. KLINERT PORTABLE CAMP STOVE Filed Nov. 25, 9 4 Sheets-Sheet 4 F 3.9. a

A5 I I FIEI'JEL IN VENTOR Patented June 2, 1925.

ES PATENT oer-ice FRED G. KLINERT, OEDULU'TH; MINNESOTA, ASSIGNQR TO HUGO MANUFACTURING COMPANY, QF-WES'D DULUTH, MINNESOTA, A CORPORATION OF -MI1\TNESOTA.

mum armsrovn ApplicationfiledNovember 25, 1-924. Serial No.. 752,139;

T all 01mm itmay concern: 7

Be it known that LFRED G. Knrivnn'na citizenof. the United States, and a resident of Dulutluinthe county offSt. Louis and State of Minnesota, have invented anew and useful. Improvement, in Portable (la-mp Stoves, of which thefollowing 1s a specification.

This invention. relates generally to port lated, and which can be manufactured at a reasonable cost.

It is a special object to provide a stove of this character in which the supporting means therefor while extremely sturdy and'adapted to position, the maincasing ata considerable height when the stove is set up for use, nevertheless nest with each other andjwith the casing when the stove is knocked-down so as to occupy the mmnnum space, in which. such means coact to protect the corners of the casing and interlock with each other when in folded condition, in which the said means coact with portions of the, casing so as to he positively and r g dly held 1n a definite position when, disposed 1n cas1ng-supporting relation, and in, which the said means are p votally attached to the casing in a manner tending; to prevent swinging movement thereofexeept. under. force positi lv Prlied y h -us r- It is also a special object to provide conenient and compact means or p sit e y holding and, supporting the lid of the casing in the desired position when the stove is set up, the functioning of which is not etfectedhy the character of the ground or other supportingsurfaoe where the stove is located.

These and; other objects Off the invention will more fully. appear hen. akeni cenjunction with the following descriptionand the appended claims.

In the. accompanying drawings illustrating the preferred embodiment of the, invention, Fig.1 is a top plan view showing the stove in its unfolded condition set up for use; Fig. 2 a front elevation of'the construction shownin Fig. 1; Fig, 8 a vertical trans verse sectional view taken substantially midway between the ends of the casing and in a plane at right angles to that of Fig. 2 Fig.v

l a fragmentary detail view showing the o nted extremity of one ofthe valve stems 'for controlling the bnrners Fig. 5 a fragmentary sectional enlarged vlew illustratmg k the. means employed for locking the lid of the casing in closed position; 6 fragmentary view, partially in sect on and partially m elevation, showing tlienieans employed for locking the supporting lo raceslfor K the legs in casing supporting position; Fig. 7 a fragmentary sectional v ew, on an enlarged scale, illustrating the nesting of the especially constructed legs both with the corners of the casing and with themselves; Fig. 8 a vertical transverse sectional view illustrating the casing in'its closed condition, or in other words when arranged for transportation, portions being omitted for the sake'of clearness; Fig. 9 a bottom plan view showing the relative positions of' the legs, the. bracing means therefor, and the means for positively holding the lid in. a definite position, when the stoveisset up for use; and Fig. is a bottom plan view of the stove. showing the relative positions which the. same parts assume when the stove tion.

Referring to the drawings, the stove case 1 is knocked-down or folded for transportav at 8, are provided. These latches preferably consist of a piece of sheet metal bent upon itself adjacent the extremity thereof opposite its hinged connection 8, as indicated at 9. The bent terminal formed by this folding or bending is adapted to project through and interlock with a suitable opening 10 provided in the side wall 3, all as clearly shown in Fig. of the drawings. In order that the entire stove structure may be readily carried when in its folded or knocked-down condition, the front side wall may also be equipped with the bent wire handle indicated at The casing is equipped with a plurality of pairs of supporting legs pivotally attached thereto. These legs are preferably attached to the bottom of the casing, and are pivotally mounted thereon by means of perforated ears 11, 11 and 11". As shown, these ears are short cylindersof sheet metal attached in any suitable way to the casing bottom. It is noted that the cars 11 and 11", positioned adjacent the side walls 2 and 3, have their axes extending at a slight angle to the end wall of the casing, and that the ear 11, dis-' posed intermediate the first mentioned ears,

is positioned slightly out of alignment therewith, all for a purpose to be subsequently described more in detail.

In the form illustrated, the casing is equipped withfour supporting legs designated by the reference numerals 12, 12, 13,

13, respectively, one being positioned at each corner of the bottom of the casing.

These le s are arran edin )airs le s 12 b b 7 Z'a 7 12 constituting one pair, and legs 13, 18 constituting the other pair. Irrespective of their-arrangement, the construction of all of the legs is identical, being preferably formed of flexible sheet metal bent to assume the angular cross-section, clearly il-' lustrated in the drawings, the angle formed by the portions of the leg corresponding to the angle formed between the bottom of the casing and the side walls thereof, and as shown is a right angle. The legs 12, 12,-

forming one pair are rigidly attached to the opposite ends of a resilient flexible bar let which is threaded through the ears 11,

V 11, and 11", the extremities of the bar being bent at an angle to its intermediate portion, as clearly indicated at 15, 15, to "facilitate attachment to the legs. These ends are preferably located within theangle formed by the legs and may be rigidly attached thereto in any desirable manner, as by soldering or brazing.

The legs 13 and 13, forming the remaining pair, are similar in all respects to the legs 12, 12, just described, being likewise rigidlyconnected to aflexible rod 16 forming a bodily movable unit with the legs to which it is attached. Each of the legs 12 and 12 is provided adjacent its free ex-' tremity with an opening or aperture 17,

while each of the legs 13 and 13 is equipped with an outwardly projecting tongue 17 formed by striking up a portion of the metal thereof, the relative disposition of these parts being such that when the legs are swung from their casing-supporting position, as illustrated in Fig. 9, to their folded position adjacent the casing, as illustrated in Fig. 10, the tongueswill project through the openings or apertures 17 to effect an iiiterlocking engagement for positively'holding: thelegs in their folded condition.

Pivotally carried by each of the pairs of legs 12,12" and 13, 13 is a bent rod serving as a supporting brace. The. brace attached to the legs ,12, 12,is indicated at 18 while that associated with the legs 13, 3 is shown at "1.9 each of these braces being bent so as to form a. comparativelyshort intermediate portion 18", 19 which isadapted to cooperate with allocking means carried by the bottom'of the casing. The bottom of the casing at its central portion is provided with an opening 20 at the opposite sides of which .is disposed the pair of curved cars 21, 21 depending from the casing bottom. Fixed to theinner face of the bottom 1 as by liveting at the point 22 is a leafspring 23 provided at the end opposite its attachment to the bottom with a bent portion 2 1 forming a retaining lug which is adapted to 'projectthrou gh the opening 20 into the space between theears 21, 21. and

isnormally urged to the position shown in Fig. 6 by the resiliency of the material of the spring 23. Sufficient space is provided between the lug 2 1 and the ears to receive the portions'18 and 1.9 of the braces 18 and 19, the parts being so shaped as to lockingly hold the braces in the position shown in Figs. 3,6 and 9, whenever the lug 24 is permitted to project through the opening 20. v

' The constructionof the braces 18 and 19 are identical-in all respectswith the exception that the limbs-of the braces 18 are off-set intermediate theirlength as at the points 25, 125: where they" over-ride the limbs :of the brace 1 9when the stove is in its knocked-down; condition,-the spaces left between the off-set portions and the bottom of the casing accommodating the limbs of the brace 19, while atthe same time permitting all of the parts to lie closely adacent the casing so as'to occupy the mini- 11111111 space. ThG- COOPGI'ZIUOII of the off-set portions 25, 25 with the ren'iainingparts is clearly illustrated in Fig. 10 of thedrawings.

Besides the latches 7, the lid 6 also carries 1 a frame designated generally by the refhas not only the resultof securing a rigid compact structure, but also serves to limit the swinging movement of the arms in one direction due to. contact between one end of the arms and the body of the frame as shown in said figure. The free ends of the arms 28, 28 are slightly'reduced so as to form the fingers 30, 30' which are adapted to project through the respective openings 31, 31 provided in the legs 12, 13 disposed at the side of the casing to which the lid (i is hinged. hen the fingers are projected through these openings, in the-manner ilhistrated in Figs and 9', the lid 6 is positively supported in the horizontal position desired when the stove is set up for use, while at the same time permitting the frame 26 to be folded so as to occupy comparatively little space and be bodily swung into the interior of the casing when the stove is in its knocked-down condition.

The side walls 2' and 3 of the casing are equipped witli the inwardly projecting ledges 2.5, 35, the former having the upturned perforated terminal ears 36, '36 which are adapted to receive the terminals of a wireygri'd 37, thus serving as a convenient means for pivot'ally mounting and supporting the grid withi'nt-he casing.-

As is usual in stovesof this character, the stove includes one or more burner jets, a vaporgenerator and a fuel supply tank, these several elements being preferably unit into a unitary structure movablefrom a posl ion entirely within the casing to a position with the tankdisposeduponthe exterior of the casing when the stove is inv use. In the embodiment illustrated, there are two burners 3S, iif'l'fa single vapor generating tube 39 arranged above the jet 38, and a fuel supply tank ll). This tanlris rovided with the usual filling openingyetl and indicating gage j to the vapor generatins tube by means of the pipe 43 and the valve controlli i'rg mechanism H. The tank 40 is rigidly connected to the remaining portions'by means of a pair of straps which are adapted to engage suitable notches 46, 46 formed in the upper edge of the side wall 3, when the burner structure is positioned for use, as indicated in I 1 of the drawings. The burner structure is also equipped with the usual mixing tube 47 and the pipes for conveying the fuel mixture to the burners inurbane lit-4S and as.

This entire burner structure may be bodily moved from its inoperativeposition in which the entirestl'uct-u're is located with.

42, and is connected in the space below the grid 37 to its opera.- tive position with the tank upon the exterior of the casing, as. illustrated in Figs. 1 and 3. In order to aid inpositively holding the burner structure'in its operative position, the bottom 1 is provided with upstanding curved retaining clip e9 which is adapted to engage one of the burner pipes, as clearly indicated'in Fig. 3', and the bottom 1 is also equipped with another retaining clip 50 between which and the side wall 3 the tank 40 is disposed when the burner structure occupies its inoperative position within the casing.

When the stove is set up for use with the b'l'irner structure in the position shown in Fig. 1, thevalve stem of the valve mechainism 44 is adapted to extend through an opening in the end wall 5 provided for that purpose. The opposite end wall 4 is also provided with an openinghl through which the jointed extremity of the valve stem for the burner 38 is adaptedflto project. This jointed end comprises a pair ofspa'ced' links 53, 53 pivoted to the stem 5'2,and a terminal thumb piece 5 pivoted between the links. l/Vhen the stove is set up for use, the parts of the jointed extremity may. be made to assume the relative positions shown in, full lines in Fig. 4: of the drawings, in which case the thumb piece 54 projects to the exterior of the casing. In the knockeddown' condition of the stove, the parts are moved to the positions shown by the dotted lines in said figure, thus permitting the entiireburner structure, including the valve stem for the valve 4A, to lie within the casing. it being understood diet in the latter position. the structure moved somewhat to the left of the position which it occupies bined warming oven and windshield. As

shown, this is formed of four members. a

bacl; 56, si-des'57 and 58 pivoted to the back, and a shelf or tray Sides 57 and 58 are provided on their nner faces with lugs 60 which cooperate with the lower edges of these sides to form slots which receive the upper edges of easing ends -1- and 5. Back- 56 of the combined windshield and warming oven rest directly upon the outer edge of thelid'G, as indicated in Fig. 3.

tl'ierprovided with lugs 61 which cooperate with the sides to form slots adapted to re- 'ceive downwardly extending flanges The inner faces of sides 57 and 58 are furon which articles which have been cooked may be placed to be kept warm.

Especial attention is directed to the con stantly flexed condition in which the rods 14; and 16, connecting the respective legs of the several pairs, are maintained both by the disposition of the axes of the apertured cars at the corners of the casing and by the arrangement of the said ears out of alignment with the intermediate ear cor responding to that designated 11; also to the nested arrangement of the legs with the corners of the casing as well as upon themselves together with their interlocking engagement as illustrated in 7 of the drawings; and in addition the positive man ner in which both the casing supporting legs and the lid of the casing is maintained in a definite fixed. position when the stove is set up for use.

The operation of the stove will be obvious from the above description. Vhen the stove is arranged for transportation, the entire burner structure, the windshield, and the frame 26, lie wholly within the casing in the manner shown in Fig. 8, the warming shelf 59 being arranged below the grid 37,. and with the windshield lying between'the grid and the casing lid 6. The casing is tightly lockedin closed position by means of the latches 7, and the casing supporting legs and.

their braces are folded closely adjacent the casing, in the manner shown in Fig. 10, in which position they are positively mamtained by the interlocking engagement afforded by the struckup tongues and openings in the legs.

To set the stove up for use, the interlocking engagement of the tongues 17 is first released by slightly flexing the legs away from the body of the casing. The legs and braces may then be readily swung under pressure to the position shown in Figs. 2 and 9, when the intermediate portions 18 and 19 of the braces are locked in the manner shown in Fig. 6 by pressing such intermediate portions against the retaining lug.

24 sufficiently to permit the intermediate portions to passinto the spaces provided between the lug and the ears 2 1, 21, in an obvious fashion.

lVith the free extremities of the legs adjusted to *asing-support-ing position, the same are placed upon any desirable support ing surface or directly .upon the ground. The lid 6 is then released, and the frame 26 swung backwardly with the arms 28. 28' adjusted to the positions shown in Fig. 9, so that the terminal fingers 30, 30 thereof may engage the openings provided therefor in the legs 12"and 13 for the purpose of positively supporting the lid in the desired horizontal position. The combined windshield and warming oven may then be arranged in operative position upon the lid and casing, in

the manner previously explained, if desired, or the burner structure may. be merely shifted from a position within the casing to a position in which the tank is located upon the exterior thereof, in the event that it is not intended to use the windshield and warming oven. The pivoted arrangement of the grid 37 permits ready shifting of the burner structure and the removal of the parts housed therebelow, without necessitating the removal of the grid or danger of its accidental displacement. The grid itself, however, may be bodily removed, if desired, merely by flexing the bent extremities engaging the ears 36, 36 to a point suflicient to' disengage the grid in an obvious manner.

The burner structure is controlled in the customary manner by means of the several instrumentalities previously described, and since this structure forms no part of the present invention, except in so far as it cooperates with the remaining parts, its operation need not be described in greater detail.

The invention, as illustrated and de scribed, provides an extremely compact, sturdy and convenient construction. When in its knocked-down condition for transportation, the arrangement of the several parts assures an extremely compact structure in which the parts are locked against accidental displacement, and the cooperation between the supporting legs not only causes them to occupy the minimum space but also serves to embrace and protect the corners of the casing. lVhen in its set-up condition, the same arrangement of legs not only provides'a very firm'support for the casing in spite of the considerableheight at which the casing is elevated, but the legs are positively held in casing-supporting position, and in turn insures a steady support for the casing llCl due to the coaction between the legs and the swinging frame carried by the lid.

Due to the constantly flexed condition in which the rods joining the legs are maintained, and regardless of the positions which the legs occupy either in their folded inoperative condition or in their unfolded casing supporting position, a. binding frictional contact exists between the rods and the several apertured ears by which they are pivoted to the casing. The parts are so arranged. that the frictional contact thus afforded is suflicient to prevent any accidental swinging movement of the leg. structure during haudling of the stove. In other words, the frictional resistance thus aft'orded is suflicient to preclude any swinging movement of the legs except under the influence of the user, thus adding greatly to the convenience in handling. The relative disposition of the axes of the pivotal ears. 11 and 11 not only function to produce the result just described, but.

also causes the supporting legs to flare outwardly away from the sides of the casing when moved to casingsupporting posit-ionv consequently increasing the supporting base for the stove when in its set up condition.

I claim:

1. A portable stove comprising a casing having a bottom and side walls, supporting legs pivotally attached to the casing, said legs being angular in cross-section and adapted to embrace the edges of the casing formed by the juncture of the bottom and side walls with, the edges lying within the angles of the legs when swung to non-sup porting position adj acent the casing, a plurality of said legs being adapted to lie upon each other in superposed nested relation, adjacent legs of the said superposed legs being equipped with interlocking portions for holding the legs in their folded condition.

2. A portable stove comprising a casing having a bottom and side walls, supporting legs pivotally attached to the casing, said legs being angular in cross-section and adapted to embrace the edges of the casing formed by the juncture of the bottom and side walls with the edges lying within the angles of the legs when swung to non-supporting position adjacent the casing, a plurality of said legs being adapted to lie upon each other in superposed nested relation, one leg of said superposed legs being provided with a struck-up tongue, the adjacent leg of such superposed legs having an opening for receiving the said tongue whereby to lock the legs in their folded non-supporting position.

3. A portable stove comprising a casing provided with a bottom and side walls, flexible sheet metal supporting legs pivotally attached thereto, said legs being angular in cross-section and adapted to nest with the edge of the casing formed by the juncture of the bottom and a side wall of the casing with said edge lying within the angle of the leg when the legs are swung towards the casing, a plurality of said legs being arranged to swing into superposed nested re lation upon each other, one of said superposed legs having a struck-up tongue projecting therefrom, and another of said superposed legs being provided with an aperture for lockingly receiving the said tongue whereby to hold the legs in nested relation upon the casing.

4. A portable stove comprising a casing having a bottom provided with an opening therethrough, spaced ears disposed at opposite sides of said opening, a yieldingly mount-ed retaining lug adapted to project through said opening into the space between the said ears, supporting legs swingingly attached to the casing, pivoted braces carried by said legs, a portion of each of said braces being adapted to be removably held between said retaining lug and one of said ears whereby to lock the legs in casing support ing position. I

5.7 A portable stove comprising .a casing having a bottom provided with an opening therethrongh, spaced ears disposed at opposite sides of said opening, a yieldingily mounted retaining lug adapted to project through said opening into the space between the said ea'ls, pairs of supporting legs swingingly fastened to the casing, a brace pivotally carried by each of said pairs,a portion of each of the braces being adapted to be removably locked between said retaining lug and one'of said ears to hold the legs in casing-supporting position.

6. A portable stove'comprising a casing having a bottom provided with an opening therethrough, spaced ears disposed at opposite sides of said opening, a yieldingly mounted retaining lug adapted to project through said opening into the space between the said ears, pairs of supporting legs swingingly fastened to the casing, a rod forming a brace pivoted at its opposite ends to each of said pairs, an intermediate portion of each of said. rods being adapted to be removably held between the said retaining lug and one of said ears whereby to lock the legs in casing-supporting position.

7. A portable stove comprising a casing, apertured ears carried by said casing, a resilient rod constantly maintained in a flexed condition threaded through said ears and supporting legs rigidly attached to the saidrod.

8. A portable stove comprising a casing, apertured ears carried by said casing, a resilient rod threaded through said ears and rotatable therein, the relative disposition of said ears constantly maintaining the said rod in a flexed condition, and casing supporting legs attached to the rod and bodily movable therewith.

9. A portable stove comprising a casing, spaced cylindrical ears carried by said casing, the axes of said ears being disposed angularly to eachother, a hinge rod threaded through the said ears, and supporting legs attached to the extremities of said rod.

10. A portable stove comprising a casing provided with supporting legs, a closure lid hinged to the casing at one side thereof, the legs adj acent said sides of the casing having openings therein, a frame pivotally carried by the lid, said frame having portions adapted to engage the said openings whereby to hold the said lid in a fixed position.

11. A portable stove comprising a casing provided with supporting legs, a closure lid hinged to the casing at one side thereof, a frame swingingly mounted on the lid, arms pivoted to said frame, said arms being adapted to lockingly engage the legs adjacent the side of the casing to which the lid is hinged whereby to support and hold the lid in a fixed position.

12. A portable stove comprising a casing provided With supporting legs, a closure lid hinged to the casing at one side thereof, a frame swingingly mounted on the lid, arms pivoted to said frame intermediate their ends, said arms being U-shaped in crosssection and embracing u portion of said frame, one extremity of each of said arms being adapted to strike the frame to limitits pivotal movement in one direction, the opposite extremity of the arm being adapted to engage cutaway portions provided in the legs disposed adjacent the side of the casing to which the lid is hinged whereby to support the lid in a fixed position.

In testimony whereof, I sign my name.

FRED G. KLINERT.

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