Footwear with self-contained heating unit

June 15, 1954

E. T. BEHNER footwear with self-contained

Filed Aug. 14, 1953

2,680,91$

HEATING unit

Sheets-Sheet 1

<img file="US2680918A_D0001.tif" />

ATTORNEY

E. T. BEHNER 2,680,918 self-contained heating unit

June 15, 1954 footwear with

Filed Aug. 14, 1952

Sheets-Sheet 2

<img file="US2680918A_D0002.tif" />

ATTORNEY

Patented June 15, 1954

2,680,918

UNITED STATES PATENT OFFICE

2,680,918

FOOTWEABWira^oNTMNnn Edward T. Behner, Cleveland, Ohio Application August 14,1952, Serial No. 304,289 (Cl. 36—2.6)

Claim.

tinnTT invention relates to footwear and par?'^ly ^®^{n S Shoes and boote}· A cavity is nroward If th¹⁶ ?^01e °^f,^the footwear, preferably forward of the shank, for insertion of a baa nmiw lratosTeat°^fTh^Chem?^{al whlch wilen wet} genfe stroia ennt? ? f^{aVlty is coyered} and the cover weight of thin? ^{SUPPOrt that portion} of the noi-SXT^ ^f00t—’ ^^bretorenT>^Vf|^tlOnb^{W111 described} with particular relates generally to^eboo^all^? ^Undei’^{St00d that H} hr tomat y SSlMB'agto”¹ wite? “aMed'toi' ‘rhe” “t™¹ “™”¹ °' toeSXXXXiSXiB toty, addlttol’U? ί?® has will be returned to the cavity™ Sweral S' ditions of water will ordinarily b_e used heat is generated over a prolonged interval ? I S m Th ^depef^{ding up}°n the amount of cheL? eratpT??^ag; ^{After the} chemical fails to generate heat when more water is added u- ,-e.

carded and a frech bag of

ΒρΤΙΐ?^0ηΤ?^{βΓ for the} chemical will ordinarily . ^de.°f cloth or other water-penetrable material. After adding the water to the container ^xt may be put m a bag or sheath of rubber or the but thteteSeS^ ^fr°^{m beC}°^{ming s}°^iledU XXdTXS¹' 'SiSSr'*?' tor through vent holes provided in the cover oTthe iTnVothf?^{1 an}Ϊ f^{thei suitable} manner. If there is no other vent for the steam, it will be vented

ThXTf ^{C0Ver and the top} edge of the cavity The cavity may be located in the ordinary sole’ narvTnte^aLT^Ief₁?^{ay be provided} above the ordisxs S St X Mu XeX ^be °' ^plaslte· th?T^gh -^{thls 18 not ne}cessary. For simplicity’ X^fcma “«rate » to with HS

Fig. 2 is _a section on the line 2—2 _Of Fig 1 g. 3 is a section on the line 3—3 of Fig 2- ’ . f⁸: ^{4 a} view in perspective of a bag of’the chemical m a rubber cover; ^{g f th} ,„?ξ,^{5 iS a}. ^yiew of an alternative arrangement with the cavity above the ordinary sole?

bSXXf⁰' “^olher ““ί.™»», f™· tt^{1S a section on} the line 9—9 of Fig 8 .rdCi’XT“« ' tot an man. The upnell T. ?θ T ^{by a W01}*the usual way The heli T ^{the sole 2 ln}The invention’is not _depe_ndSt ™on th° in which the shoe is a^emhnT ^P?L^th manner are illustrative only ^embled- and the drawings th^ole^ThetooiTe ^d°^Wn T? ^the father of the edit “XX. TfXS’S X Κΐ X X ’“'X “to the X togeX 'ThXiJXS” ghE^egg Bke feeUitatesί,Sg the SeX?⁰'*¹ “ to the cavity 5 ^g he cover to gam access

-Xi S 2X s®S’¹⁵ “ fc? ‘“to °' toieTwgg X

Xe? tSxxs»S£^e”Hf™“ ^a sss =

JO <>a ,0

2,680,918

The cover of the cavity is made of two parts 34 and 35 which are suitably united. The part 34 is a leather covering which extends clear to the toe of the shoe. The part 35 is a stiff leather which is ordinarily the same composition as the secondary sole 31. It is severed from the secondary sole along its front edge 31 and is supported by the insole or part 34 which serves as a hinge. The rear edge of the coyer is beveled and rests flat against the surface of that Ρ°^Γ£°ξ of the secondary sole 3i which is just to the rear of the cavity. As shown in Figs. 6 and 7, this cover, is wider than the cavity and is supported at the sides as well as at the rear. This make the cover very strong and it easily supports the weight of the wearer.

The structure shown in Figs. 8 and 9 provides a cavity 40 in the sole 4i. The cover 42 is removable. The central portion 43 of uhe cover . is thicker than the edges 44 and fits down into the cavity. It holds the cover, in position. The tab 45 which is fastened to the cover m any usual manner facilitates its removal from the shoe Instead of the cover being built with a thick center to fit down into the cavity, it may be provided around the edge of its under surface with a bead which fits down into a complementary groove in the. sole of the shoe; or the under surface of the cover may be formed with a g^loo^yewhich fits over a bead on the sole of the sho . Any means may be provided for holding the cover in place in the shoe.

The cavities 30 and 40 of the respective modifications shown in Figs. 5-7 and 8-9 are filled wit a- container of the moist chemical when. th. shoes are to be worn in the cold. _x

Although the cavity is shown as located foiward of the instep, this is not necessary, although it is preferably and imparts heat to the most , advantageous part of the sole of the ^{wearer a}foot. The size of the cavity will generally b. limited to holding a bag containing the retired amount of chemical, because a cavity larger tha required to hold the desired amount of chemical . will result in heat loss and will not make the ’ shoe as serviceable or the heating as as a cavity which just comfortably receives the bag of chemical.