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Publication numberUS2579620 A
Publication typeGrant
Publication dateDec 25, 1951
Filing dateMay 8, 1948
Priority dateMay 8, 1948
Publication numberUS 2579620 A, US 2579620A, US-A-2579620, US2579620 A, US2579620A
InventorsSmith John W
Original AssigneeSmith John W
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hand warmer
US 2579620 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

J. W. SMITH HAND WARMER Dec. z5, 1951 Filed May 8, 1948 INVENTOR -JOHN W. SMITH Mr/ZW ATTOR Patented ec. 25, 1951 UNITED STATES PATENT 1Of" F ICE ,'579,6) nimh WARMER John W. Smith, Minneapolis, ii'ptiit'atioii niet 1948, sedative. etitt Y s claims.- (ol. @1262-2083 e My invention relates` to hand' Warnier-s andinas for an object to provide warmer Iadapted to 'produce heat at a iiicd'erate teinlratui'e.

Another object ef the intenti si'des nrovlding' a warmer in which the amount of heat 'produced iiiay be readilycontiolled; u

A still yfurti'iei 'ohj'ect ef the iiiven 'ori lresides providing we'iei which ease' to start and which 'will een'tliiiue to function without interli'itiei.- n

A 'still further bliet 'the invention "esid's iin brovidii-ig a hand warmer halvl a cept'acle for a liquid "fuel 'and in employing a burner utiliz# insl 'a iiei'tible fibrous combustion member colitaining a catalylic ge'rit and disposed in the path of thegfiimes emanating". from the fuel in said re"- ceptacl. l

object of the invention resides in providing the burner with a core and windingV the com; bustion member upon 'said corea` A feature of the invention resides in constructing'f the `core Jhelical iri` forni with the t'zoiii'relii-v tions thereof spaced froin one a-iiotlieii An object of the invention resides winding the combustion element upon the exterior of the eonvolutions of the core and in a` manner to cause the c'onvolutions of the combustion element to cross the convolutions of the core;

A still further obect of the invention resides in winding the combustion elem-ent in 'one forni of the invention directly about the convolutions of the core and in a manner so that the core is `coms-1 pletely or partly covered.`

Another object of the invention l'res'i'desin at#- taching the ends of the combustion element to the core by pinching the same in between certain of the convolutions of the core at the ends of the same. K l

` -An object of the invention resides in provid-'mg the receptacle with a, neck having an outlet there- I and through which thefumes from the liquid fuel emanate.Y i

A feature of the invention resides in providing the burner with a tubular housing `adanted to :tit over said neck and to detachably hold the burner mounted on the receptacle.

An object of the invention resides in providing said housing with an opening to permit of entry of air to said combustion element and to further provide a sleeve sli-dable along said housing for regulating the area of said opening.

Other objects of the invention reside in the novel combination and arrangement of parte and in the details 'of construction hereinafter .illustrated and/oidescribed.

lIl)

-Iii the drawifn I I Fie. `1 l is a firent elevational view of a `hand Warnier lillustratin 'an embodiment ofmy invention with a portion! thereof broken away;

Fig. 2 is a cross sectional view taken lori lline 2&2 of lFifi. 1^.

Fia. 8 is "a perspective view of the parts of the invention detached 'from oneanotlier.

Fig. 4 is 'an lenlarged elevational sectional view of 'a portion of the burner taken on line 4;-4 of Fig; 2'.

Fien 5` is a cross sectional view taken. on line 5115 of Fig. 4.

Fig; 6 is a view sim-ilito Fig. 4 "of a medidos,"-` tior of the invention. Y

Fig; 7l is a 'cross sectional view eimilar to Fig' 5 taken `on line` 1121' of Figi. 6:

The instant invention comprises a receptacle Il) for liquid fuel which-consists f a body II stamped from sheet inetal and :termed with sidet I2, ends i3 and a bottom I4; The upper end 'of the body II is open and has attached to it a top I5 which has a fla-nge I6 of the same configura;- tion as the body II but slightly smaller in dimen-y` sions and which 4is pressed into the upper endof the body. I I to irictionally holdA the parts attached to one another; The top I5 has formed on it neck` I'I which has an opening I8 the same serving as an outlet -for the fumes of the liquid fuel contained within the receptacle IU. rThe inf` terior `of the receptacle I is filled with absorbent such as cotton which is indicated at I9 and which holds the liquid fuel introduced into the recep; tacle Ill through the opening I8'. The `said absorbent prevents the Yfuel from spilli-ng and causes the same to travel by capillary attraction to the portion 2 Io the same where the `fumes. from the liquid :fuel travel outwardly from the outlet I8 in neck Il.

The invention includes a. burner 22 which cn sists of an elongated flexible combustion member or l'eni'ent 23 which is constructed of asbestos or some other similar fbrous material; This com'L bastion member er element kprovic'le'ui with a catalytic agent which is' incorporated therein in the following manner. The asbestos is immersed in a 5 to Y10% solution 'of platinic "ehlrid or palladium chl'rid. Alfter saturation the asbestos is heated to a temeratire of 'about 51200" Fahren heit which evaperates the water and 'converts the residue into a substance ordinarily known ag platinum black or 'alladiuiii black; This sub1 stance -se'ves as a catalytic agent which 'aids iii oxidation of the runes troni the liciid -fliel and causes 'combustion at a relatively 'slow rate.

The combustion member or element 23v is mounted upon a core or support 24. Core 24 is constructed of wire which is coiled to form a helix 25 having spaced convolutions 26. The ends of the helix 25 are formed with hooks 21 and by means of which the core or support is supported. Core 24 is attached to a housing or frame 28. The housing 28 is tubular in form having a tubular skirt 29 which fits over and frictionally engages. the neck |1"ofjtop.|5.toho1d the burner detachably'secured to the receptacle ID. The housing or frame 28 is formed with arms 3| at the ends of the same and which extend upwardly therefrom. These arms are,-4

sorbent and to be maintained in the portion 2| of the absorbent at the outlet of the receptacle I0 formed by the opening I8. In starting the warmer, the combustion member or element 23 is heated with a match or cigarette lighter. The heat so produced causes the liquid at the exposed surface of the portion 2| of the absorbent I9 in neck to evaporate and the fumes from the said liquid pass through the passageways 35 'about the `convolutions `.of the 'said combustion member. The `fuel then -becomes ignited and burns by combining With the oxygen of the air *entering the chamber 31 through the openings 3.9 lQombustion is assisted by means of the catalytic agent formed on the combustion member 23 and maintains combustion as long as the fuel to the combustion member or element. For the housing 28, lugs 33 are struck out of thegmetal.-

of the arms 3| and bent' inwardly into the interior of the housing. The hooks; 21 on the ends of ,thecore or support 24 ,are hooked over these lugs and the core thus supported. The combustion member orV elementr 2 3 is wound upon the exterior of the convolutions26 of core or support 24. If the helix 25 is a right hand helix, the convolutions are wound ina manner to form a left hand helixwhereby convolutions 34 are formed on thecombustion member -or element 23 and which cross the convolution 26. The convolutions 34 are also spaced from one another to provide passageways35,therebetween and. through which air may circulate about the said,..convolutions. Theends ofthe combustion member or4 element 23 are held attached to thecoreor support 24 by pinching .the same betweenthe end convolution 4| of the core 24 and-the adjoining convolution .-gf.. For controlling the rateof combustion, a sleeve 46v is employed which isof the same .shape asthe housing 28 and which encircles thev same.. .This sleeve tssnugly about said housing andmay be slid longitudinally with respect. to the same. The. said.v sleeve serves toincrease or. decrease thesize of theopenings 32 -and thus serves as adamperfor .controlling theairadmitted to the combustion.element.4 :The burner 22 and associated parts are enclosedby means of a Vcap 36-which is of similar construction to the body of-receptacle I0:V This cap .snugly-fits over the protrudingportion of the iiange i6 of top l5 and frictionallyengages saidflange to hold the capl detachably mounted on the receptacle. The said cap has a chamber 31 withinthe same which re. ceives theburner22. The parts are so propor-A tioned that. the said burner and associated parts are held in spaced relation to the Wallsof the cap 36,.whereby undue heating of the same is prevented. The cap 36 has a front wall 38 in whicha number of air inlets 39 are formed and byA means of which air maybe introduced into the chamber 3.1 .forthepurpose of supporting combustion at. the burner 22 vand by means of which theproducts of combustion may escape. ,The methodof using theinvention is as follows:

v.Cap 36 is ylrst removed; and the burner22 subsequently removed. A volatile liquid fuel such as .naphtha, high test gasoline, benzene, heptane orrelated compounds or alcohol is poured in the receptacle ll `through the opening I8 in the neck l1. The absorbent` I9 absorbs this liquid fueland prevents the same from spilling. At the; Sametime capillary attraction causes the liquidfuel to. be dispersed rthroughout the abremains in the absorbent |9. In operation, the Vcorr'lbusti'on''member or element 23 glows at a relatively low temperature without the production of any flame. The heat produced by said combustion element warms the cap- 36 and also the receptacle i0 giving off heat at a fairly low temperature so that the device can be readily held vin the hand without danger of burning `or excessive discomfort. The hand warmer may be placed in the po c ketor glove of the user and will produce suilicient heat to prevent numbness ordiscomfort to the user While out in the cold.

In Figs. 6 and 7 I have shown a modication of the invention. Due to the similarity of the construction of this form of the invention Vwith that heretofore described, the description Vof the similar parts thereof will not be repeated andthe samereferencenumerals preceded by the digit l WiILbe-usedto designate corresponding parts. 1 In this form of the invention the vconvolutions |26 of the core or support l|.24- are considerably spaced andthe combustion member or element |23 wound directlyupon these con-I Volutions. In this manner the combustion membergis formedwith convolutions 42 which conjointly form a helix 443. The end convolution |4| of the core or support |24 is brought into close proximity to rthe adjoining convolutions |26 ,permitting of pinching the Vend 4of the combustion memberor element `|23 therebetween and holding the same lattached to the core. Core |24 in this form of ,the inventionis constructed as a compression coil springand is held .attached to thehousing or frame' |28 by means of nubs 44 whichr are pressed inwardly'fromthe arms I3| The device is extremely simple inconstruction and convenient forfuse. The device will operate a number of hours on one filling of liquid fuel.4 The temperature of the devicedoes not become so great that discomfort is given to the user. At thesame timethe device maybe placed within the glove or pocket of the user Without burning or. injuring'fthe-clothing. ofthe user.- Since no name resultslin the combustion ofthe fuel, no. danger from fire kispresent in the use ofthe device. The user may adjust the temperature by controlling the amount of air reaching the combustion member bymoving the damper sleeve relative to the housing and-thusfregulating. the size of the air opening to the combustionelement. i x

`.Changes inthe specific form of my invention, asherin described, maybe made within the the spirit of my invention.

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

1. In a hand warmer, a receptacle for a volatile liquid fuel and having a discharge outlet for the fumes emanating from the fuel, a burner superimposing the outlet of said receptacle, said burner including a support and an elongated fibrous combustion promoting element mounted on said support and formed with spaced convolutions providing passageways therebetween and through which the fumes may pass.

2. In a hand warmer, a receptacle for a volatile liquid fuel and having a discharge outlet for the fumes emanating from the fuel, a burner superimposing the outlet of said receptacle, said burner including a core and an elongated flexible fibrous combustion promoting element wound on said core to form spaced convolutions providing passageways therebetween and through which the fumes may pass.

3. In a hand warmer, a receptacle for a volatile liquid fuel and having a discharge outlet for the fumes emanating from the fuel, a burner superimposing the outlet of said receptacle, said burner including a frame supported on said receptacle and having arms extending outwardly therefrom, a helical core extending between said arms and having spaced convolutions and an elongated flexible fibrous combustion promoting element wound upon the exterior of said core and forming spaced convolutions to provide passageways therebetween through which the fumes may pass.

4. fn a hand warmer, a receptacle for a volatile liquid fuel and having a discharge outlet for the fumes emanating from the fuel, a burner superimposing the outlet of said receptacle, said burner including a frame supported on said receptacle and having arms extending outwardly therefrom, a helical core extending between said arms and having spaced convolutions and an elongated flexible fibrous combustion promoting element wound upon the exterior of said core and forming spaced convolutions to provide passageways therebetween through which the fumes may pass, the ends of the combustion element being pinched in between certain of the convolutions of the core.

5. In a hand warmer, a receptacle for a volatile liquid fuel and having a discharge outlet for the fumes emanating from the fuel, a. burner volutions and providing passageways therebetween through which the fumes may pass.

6. In a hand warmer, a receptacle for a volatile liquid fuel and having a discharge outlet for the fumes emanating from the fuel, a burner superimposing the outlet of said receptacle, said burner including a frame supported on said receptacle and having spaced supports extending outwardly therefrom, a helical core extending between said supports and an elongated flexible brous combustion promoting element wound upon said core and formed with spaced convolutions to provide passageways therebetween through which the fumes may pass.

7. In a hand warmer, a receptacle for a volatile liquid fuel and having a discharge outlet for the fumes emanating from the fuel, a burner superimposing the outlet of said receptacle, said burner including a frame supported on said receptacle and having spaced supports extending outwardly therefrom, lugs extending inwardly from said supports, a coil spring having spaced convolutions disposed between said supports, the ends of said coil spring being hooked on said lugs, and an elongated flexible fibrous combustion promoting element wound upon the coil spring and forming spaced convolutions to provide passageways therebetween through which the fumes may pass.

8. In a hand warmer, a receptacle for a volatile liquid fuel and having a discharge outlet for the fumes emanating from the fuel, a burner superimposing the outlet of said receptacle, said burner including a frame supported on said receptacle and having spaced supports extending outwardly therefrom, a helical core extending between said supports and having spaced convolutions of a predetermined hand, and an elongated lexible brous combustion promoting element wound upon the exterior of said core to form spaced convolutions having a hand opposite to the hand of the convolutions of said core.

JOHN WM. SMITH.

REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 1,266,162 Rosin May 14, 1918 1,502,251 Kanazawa l- July 22, 1924 FOREIGN PATENTS Number Country Date 17,093 Great Britain of 1901 376,133 France Aug. 1, 1907 548,192 France Oct. 14, 1922 399,642 Great Britain Oct. 12, 1933

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1266162 *Dec 3, 1917May 14, 1918Alexander RosinPortable heater.
US1502251 *Jun 28, 1923Jul 22, 1924Sadanosuke KanazawaPccket stove
FR376133A * Title not available
FR548192A * Title not available
GB399642A * Title not available
GB190117093A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2627306 *Apr 15, 1949Feb 3, 1953Schreiber Raymond PaulCatalytic heater
US2670728 *Mar 28, 1952Mar 2, 1954Smith John WHand warmer
US2715400 *Feb 14, 1952Aug 16, 1955Scovill Manufacturing CoPocket warmer with heat control
US2746138 *Sep 28, 1950May 22, 1956John W SmithHand warmer construction method
US2833271 *Jun 1, 1955May 6, 1958Barber ClydeHeater for tool handles
US2942601 *Aug 1, 1957Jun 28, 1960Aladdin Mfg CompanyHand warmer
US3124416 *Apr 5, 1957Mar 10, 1964 Method of remoying oxygen from gases
US3405704 *Aug 28, 1967Oct 15, 1968Aladdin Mfg CompanyBurner for hand warmer
US3866596 *Oct 18, 1973Feb 18, 1975Gottwald AnthonyHeat control for catalytic heaters
US5302806 *Dec 8, 1992Apr 12, 1994Thermo-Cool Products Inc.Heated vest with pouches for accommodating inserted heating packets
US5605144 *Apr 8, 1994Feb 25, 1997Thermo-Cool Products IncHeating garment with pouch for accommodating inserted heating packets
US7775204 *Jan 5, 2007Aug 17, 2010Long Ho ChenWarming shoe pad
US20070082756 *Feb 15, 2006Apr 12, 2007Pose Co., Ltd.Portable case for golf ball equipped with heat generating device
US20080163861 *Jan 5, 2007Jul 10, 2008International Metrople Corp.Warming shoe pad
US20100024795 *Aug 7, 2007Feb 4, 2010Qlt Co., Ltd.Hand warmer
US20130281894 *Apr 24, 2012Oct 24, 2013A-Hot International Co., Ltd.Thermal type massage device
Classifications
U.S. Classification126/208, 431/140
International ClassificationA61F7/03, A61F7/02
Cooperative ClassificationA61F7/032
European ClassificationA61F7/03D