US1568405A - Pneumatic footwear construction - Google Patents

Description

Jan. 5 1926.

J. c. KELLER PNEUMATIC FOOTWEAR CONSTRUCTION Filed August 30, 1924 a 6 I r 5 INVENTOR A (TORNEYS PatentedJan. 5, 1926. p r r U UNITED STATES PATENT orr ce.

JOHN CHARLES KELLER, OI C.' HICAGO, ILLINOIS, ASSIGNOR OF ()Ihl'llsl-HALIE T FRANK B. SMITH, OF CHICAGO, ILLINOIS.

PNEUMATIC FOOTWEAR CONSTRUCTION.

' Application filed August 30, 1924. Serial No. 735,127.

To all'whom it may concern: This heel consists in a hollow vulcanized Be it known that I, JOHN CHARLES KEL- rubber body member 3 having a valve 4 sim- LER, a citizen of the United States, and a ilar to the ordinary type of pneumatic tire resident of Chicago, in the county of Cook valve projected through one of its side and State of Illinois, have invented a new Walls 5. I and useful Improvement in Pneumatic Foot- This valve 4, unlike the ordinary type of wear Constructions, of which the following valve, however, has internal threads 6 for is a full, clear, and exact description. engaging with an air hose, in place of ex- My invention relates to improvements in ternal threadsfound on the ordinary type pneumatic footwear construction,- and it of valve. The valve 4 does not project more 1 consists in the combinations, constructions, than a fraction of an inch beyond the Wall and arrangements herein described and 5 of the body member 3. v p claimed. The lower portion 7 of the body member Anobject of my invention is to provide 3 is constructed of especially tough vulcana devi ofth h ra t r d ibedtby means ized rubber suitable to'resist wear by Tric- 7 of which a high degree of resiliency is protion upon the pavement, while the upper vided for the heelrportion of the ordinary part of the body member is constructed of type of shoe. g a soft quality of rubber, highly resilient.

A further'object of my invention is to Openings 8 (see Figure 2) are provided provide a device of the character described through the body member 3 by ea s f in which means is provided for varying the Wlnch rivets 9 may be employed to secure degree of resiliency of the heel portion of the body member to the sole 2 of the shoe, the shoe at will to suit the weight of the shown in Figure 1. person wearing the shoe. From the foregoing description of the .A further object of my invention is to Various parts of the device, the operation provide a deviceof the character described thereof may be readily understood. The which greatly decreases the weight of the ordinary type of tire pump is employe'dfor heel portion of the shoe, thereby decreasing inflating my improved pneumatic heel, and fatigue-of the wearer from continued walk when the proper pressure has been attained ing or standing. My improved footwear the shoes may be placed upon the feet of construction is especially desirable for perthe wearer, and inspected from time, totime sons who are required to stand on their 'feet so as to maintain the proper inflation thereduring most of the day, such as clerks, conof. The valve 4 is tight and pressure ought ductors, policemen, and the like. not to vary for months of wear.

A further object of'my invention is to Dueto the extreme lightness in the conprovide a device of the character described struction of the body member 3, Le, the that is extremely simple in construction, duportion thereof containing air, the person rable, and thoroughly practical commer- Wearing the shoe will note a marked ease cially. V with which walking .is accomplished, also Other objects-and advantages will appear elimination of practically all shocks and in the following specification, and the novel Vibrations ordinarily imparted to the feet features of the invention will be particularof the .person wearing shoes with the'ordily pointed out in the appended claim. may type of solid heel.

My invention is illustrated in' the accom- I claim:

panying drawings forming a part of this The combination with a shoe having application, in which: g sole, of a hollow heel member secured to Figure 1 is a sectional'view of an embodisaid sole, said heel member having its hotment of my invention, and tom wall constructed of a tough, vulcanized Figure 2 isa section along the line 22 material and vulcanized to the remain ng of Figure 1. portions, theremaining wall portions being 1 In-carrying out my invention I make use highly resilient, and a valm projected 'of the ordinary type of shoe 1 having a through one wall of said heel member, said sole 2. The solid heel, either rubber or valve being constructed to liefflush with leather, isremoved from the sole 2 and my the exterior surface of the ad acent wall. improved heel substituted therefor. JOHN CHARLES KELLER.

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