US2395794A - Collapsible cooking receptacle - Google Patents

Description

Feb. 26, 1 946. H FOSTER 2,395,794

COLLAPSIBLE COOKING RECEPTACLE 7 Filed Dec. 24, 1945 INVENTOR. mum [u a. fflJTfK 34,412; 3. W

A TTORIYEY Patented Feb. 26, 1946 2 395 194, COLLAPSIBLECOOKING REGERTACLE N; Y; a corporation of New Jersey I Ant nna ntents; 2 was; semi in... mear 'Ehisintention r lates to, a col psible cook n tec taele w ich particu arly well ad pted. tor enw li i i lfi 9 Qam ingee ipmeht. ecause or; the r ad n s with wh ch it. be. o ded nto mall c m ct paelseee. w en not. n use Gookine r oenta les intended for use neamnme have ee made he etoior i ht wei ht me a s'sue as a m num anduhaye b n. pro: vid q l ith ol ed hand es, b t such cooking re: ceetee eslwm e eht n. e g t are btlkyto carry.

hefpres t nvention c t mplates a non: Wetsu t; re epta e for heating water or other i nids, which is, formed of a lat sheet oi- Woven asbe tos. ic. av n he ace thereof: that is tofonn theinsideofr" the receptaple cgated with, a heat-resistant. materi l, The h t. is. provided w th re easa le means or holding theedges; of he h et ea heree teee te o o m. a ece ta l h n mQ Qn t a when. h s coo-kin receptaole is to be used to heat a liquidit may be suspended from atripod or other snppqrt the time b u ti e o tainer hat. s sa eab e o being usedover an open, fireto boil water or heat other liquids, and/when not in use may beffolded intoi a'package not much 'larger than a mans folded pockethandkerchief.

One object oi the present invention is to prode a t hee Q i b t w i a e asi y and quickly converted into a cookingreceptaclefthat Inay" be used many times to boil liquid therein without beinginjured by itsexposure to a hot fire.

Another object of the invention is to provide a fabric cooking receptacle having draw-strings as sloeiated therewith so that when the receptacle is siipported by'the draw strings in a suspended qotd ti t WillfQ m a r h ed, kin ceptacle, Another feature of the intention resides stiff reinforcing strips secured to the marginal edge portions of the fabric receptacle which strips can be readily interlo'ckedvto forth a frame adapted to impart the desired shape tethe suspended fabric receptacle.

In carrying out, the present invention the 001-. iapsible cooking receptacle is preferably, formed of aj fiat seamless sheet of, thin woven asbestos fabric that is coated on, one face to render it watertight, and has a total thicknessjof not more than a 'fewhundredths of an men so that the heat applied to theenterior, of thereceptacle will be: transmitted. rapidly through the thin wallsot the receptacle to theliquid content thereintjg b R 7 3??? :3 i g. h; fabric to a temperature high enough to cause dehydration of the as bestos or otherwise to injure the fabric or the water imnerrious coating. material at the inner; facethereofa V v r 'lhelizarious features. of the invention and novel arran ement of parts. will be more full-yr under:

stood from the iolloxyingdescrihtion whenread in connection with theaecomnanying drawing.

illustratin one ood practical embodiment oi the imzenti n. e

n the drawin F 1 is. a plan View: at a collapsible. cookin receptacle. as contemplated by-e the. present n enti n show in, its flatror-inllx entended com diti hend. withits qoated racenp.

F .21; a pnnlanview of; the c nstrnetion of F g;. shown assembled into: the form not: a

houq rlike qoo ngmeeeptacle Fi a. sie elev t on of; the; construetiornof;

E g. 1 s a oerspect ve; show ng, the eools= nner ee taeleo i L foldeduh i to asmal-l comreet p ka e; and

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o an ihle ki ia eceptacle such as here: n qo t mnl ted ma efoij various sizes and shares, In itsis inp est orm. t mi ht. comprise afthi i heet o w ven asbes o i ahr et av ne a c h nueus heat-re istin qoatinaunon the face thelj of; ha is 9 form, thei ns deho heir-ewe: tacl a id-Which is adante i qi zst pen e om it 7 mare nai d e por ehs; o. orm. a p uch-l ke et pta l t at s a a o le n ed2 im s ov r; o r il i ehqitw tet heat oth r teams he ontmt r2n lu tra ed; n he. drawin a collapsible cooking negeptacie is sh'own commie; me a seamless sheet. t hi woven, a bestos abr ihat ne. h ace he z o that s to. rm the int o f; thec ta qqntinu ils1 iqu d-im.- pervions oatin iah e esi tant. material with s n o rene which i l; no ea o on r -11 nat h .v o s o e; e p a e nd which willste e e d scn h na nd cl a in or h receptac1e. The construction. illustrated is cut frqi Me r a a vashe tesvheet. '2 H to Provide an on m mber; he inej ounded w w esh wn Fig he r c an ul i. e. ners thns-producedn aybe provided with tiizent ,-yix, o s a show ,,ther e ne r-e om mats in h e: ther imde corn s, and: two etomm t n;.. 1. v feurth, nd d o n r;- T e remote hi to; pr vide; e re eptao el-vwith a o 5:: mee may be poured. In addition heet with the rounded corto the grommets l2 located in each corner as just described, three grommets l2 are provided along each of the four marginal edge portions of the rectangular sheet where they served to secure long stiffening strips IE to two marginal sides of the sheet H), II and short stiffening strips I6 to the two marginal ends of this sheet.

The strips I5 and 16 may be formed of metal or other suitable material and are constructedv to interlock and make a rectangular frame, as shown in Fig. 2, when the receptacle is suspended to form a pouch-like container. To this end the stiffening strips and I6 are provided with the cooperating notches l1 arranged so that the ficiently fire resistant to withstand the heat to' which they are likely to be subjected and may be formed of an asbestos strand having-a central reinforcing wire. Each of these draw cords l8 and I9 has its ends threaded through the two end grommets in a short reinforcing strip l6' and then through a grommet at one end of each of the long reinforcing strips l5, and eachcord'end is finally led through the central grommet of a short strip 16 and-the knots 20 areformed' to prevent the ends of the drawstring from pulling through such grommet. This serves, when the cords are drawn up, to draw the reinforcing strips l5 and I6 together. It also serves to exert an upward pull upon the short strips ifijto keep the notches ll of these short strips engaged with the notches I! of the long strips. It will 'also be noted that three of the end portions of the cords pass back and forth from one face of the fabric to the other as they extend successively through the four corner grommets [2, but that the fourth cord end portion where there are only 'two corner grommets passes along the inner face of the fabric from one corner grommet to the other. The purpose of this is to cause three of the corners of the fabric to be gathered up as at l3 when the cords are drawn through the grommets, while the fourth corner will be permitted to extend outwardly to form the pouring spout I4 after its cord end has been drawn up. w l M It is desirable that the asbestos fabric employed to make the present collapsible cooking receptacle weigh not more than about 16 ounces perfsquare yard and that it have a thickness of not more than about .040 inch. The asbestos content should be not less than 80%dby weight of the fabric. If the fabric is much thicker or heavier than this, the heat applied to the outer surface of the'fabric receptacle may not be transmitted to the liquid in the receptacle quickly enough'to prevent injurious over-heatingiof the asbestos fabric. While a number of heat resistant materials may be employed to waterproof the inner face of the receptacle, good results have been secured by coating the inner face only of the asbestos fabric with neoprene about .010 inch thick, as this has been found sufficient to insure ruggedness and dependable water retention and is thin enough to permit rapid heattransmission therethrough. The neoprene may be applied by calendering a plastic mix directly onto the fabric.

While, as above stated, the collapsible cooking receptacle contemplated by the present invention may be made in various sizes, a receptacle having a liquid capacity of one and one-half pints is considered a desirable size for a cooking receptacle for one person. To provide a cooking receptacle of this size an asbestos sheet was made from asbestos cloth weighing 11 ounces per square yard and having a thickness of .028 inch. After this asbestos sheet was coated with neoprene, it weighed 35 ounces per square yard and had a thickness of .038 inch. The coated fabric thus produced was cut in an oblong oval shape such as shown in Fig. 1 of the drawing so that it was 13 inches long and 10 inches wide. The short stiffening strips I8 were 2 inches long and the long strips 15 were 5 inches long. Each strip was made of thin galvanized sheet metal 3; of an inch wide. 'The complete container shown in Fig.1 of the drawing weighed approximately 4%; ounces and the dimensions when folded up into the fiat package shown in Fig. 4 of the drawing were approximately 5%, inches by 3 /4 inches by inch. The receptacle of Fig. 1 of the drawing is folded up into the compact package of Fig. 4 by proceeding as follows. One end having the strip I5 is folded overtowards the center of the flat receptacle as far as the strips i5 will permit and the opposite end I6 is similarly folded over. Then one side provided with a strip I5 is folded over towards the opposite side strip along a line /3 of the distance from the side strip [5, and then the opposite side strip is similarly folded over. This produces the fiat package shown which is slightly longer than the strips i5 and slightly wider than the strips l6 and which can be conveniently carried in a pocket of the ordinary coat or trousers. 1

A container weighing approximately 4 ounces and having the construction just described has been tested over an open fire to boil water, and was found to be still usable after water had been boiled therein 250 times-furthermore the water was not contaminated throughout this test by its contact with the walls of the receptacle.

Having thus described my invention, what I claim and desire to protect by Letters Patent is:

A collapsible cooking receptacle adapted to be spread out in a fully expanded. condition when it is to be washedand suspended in the form of a pouch-like receptacle when in use, comprising a sheet of fabric having parallel opposite edges, intermediate outwardly curved corner portions and 'a heat resistant plastic coating on one face, parallel pairs of stiffening strips secured to intermediate portions ofsaid edges to provide free movement of the corner portions of the sheet for folding, one of said corner portions being shaped to provide a spout, said strips having complementary securing means to form a rectangular frame that defines the opening of'the receptacle and from which frame the sheet is suspended to provide areceptacle that bulges outwardly laterally below the frame, and'draw cords secured to theoppositely' disposedstrips and looped through the adjacent corner; portions and the interior of the receptacle for supporting the corners and the frarnein a suspended con,- dition. a BOUTWELL. ROSTER.

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