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Publication numberUS1266492 A
Publication typeGrant
Publication date14 May 1918
Filing date16 Aug 1917
Priority date16 Aug 1917
Publication numberUS 1266492 A, US 1266492A, US-A-1266492, US1266492 A, US1266492A
InventorsTheodor Kurrell, Heinrich Schneider, Julius Helms
Original AssigneeTheodor Kurrell, Heinrich Schneider, Julius Helms
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Mud-shoe.
US 1266492 A
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Description  (OCR text may contain errors)

T. KURRI-LI., H. SCHNEIDER 6L I. HELIVIS.

MUD SHOE.

APPLICATION FILED AUG.I6 1917. 1,266,492.

Patented Maty 14, 1918.

- D sin'.ritsl rATEnTi onirica.

THEODGRKURREIL, HEINRICH SCHNEIDER, AND JULIUS I-IEIMS, 0F SAN FRAN-CISCO,

` CALIFORNIA.

MUD-snort Application filed August 16, 1917.k serialfo. 18613689.

.To all zo kom t may concern.'

Be it known that we, THEoDoR KURRELL,

HEINRICH SCHNEIDER, and JULIUS HELMs, respectively a citizen of Russia, a subject of the Emperor of Austria, and a subject of the Emperor of Germany, and residents of San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Mud- Shoes, of which the following is a specification.

The object of the present invention is to' provide a shoe for walking over ground which is swampy or marshy or composed of mud too soft to support human beings with ordinary shoes.

In the accompanying drawing, Figure 1 is a plan view of our improved mud shoe; Fig. 2 is a longitudinal section of the same; Fig. 3 is a cross section of the same on the line 3 3 of Fig. 1; Figs. 4, 5, 6, 7, are side views of the shoe, showing it in various po- 1,

sitions as it is raised from ground composed of mud.

Referring to the drawing, 1 indicates a fralne composed of wood or other light and strong material and preferably, although not necessarily, of elliptical form. Secured at their ends to the under side of said frame are parallel strips 2 of similar material spaced apart at proper intervals. 3, 4, indicate front and rear transversely extending platforms or supports for the foot, secured by screws 6 through their ends to the elliptical frame 1, and to the longitudinally extending strips 2, between which strips 2 and said platforms are interposed spacing blocks 5. A heel support 7, preferably of sheet metal, is secured to the rear platform 4, and short canvas bands S are secured at their outer ends to the front platform 3, the inner edges. of said bands being secured around the ordinary shoe by laces 9 through eyelets 11 in said bands adjacent to their inner edges. The central portion of a strap 12 is secured to the two central longitudinal strips 2 by means of a superposed block 13 and by screws 14 extending through said block and strap and screwed into said strips. Said strap is adapted to surround the heel portion of the ordinary shoe and is provided at one end with a suitable buckle 16. A sheet of strong canvas 20 is provided, of form approximating that of the frame 1, and the edge of this sheet is secured all around the Specification of Letters latnt.

by the frame.

l Patentes-May14,1918.

edge ofthe frame by. nails 1or .tacks-17 Said sheet,vhowever, does not fit tightly 'against the frame, but hangs loosely therefrom., be-

ing of greater area than the area bounded At the front and rear ends of the shoe there are secured to the frame pieces 18, 19 of sheet metal, curved to conform to the curvature of the frame, and depending below the same a sufficient distance to prevent the shoe slipping on the ground by its penetration into the same.

One of the dilicu'lties to be overcome in walking upon soft mud is the difficulty of raising the shoe from the mud. Mud shoes made out of wooden boards or the like would be a failure, because of the ditliculty of raising the board from off the mud, this difficulty being occasioned by the atmospheric suction between the board and the mud when the board is lifted. When the board is pressed down upon the mud, the air is expelled from between the mud and the board, and when the board is again lifted the mud clings to the board on account of the atmospheric suction thus produced.

The way in which this dilliculty is overcome in our invention is illustrated in Figs. 4 to 7. The shoe is readily raised from the mud, for, in the irst place, there is no atmospheric vacuum between the frame and the canvas tending to oppose the lifting of the frame itself. Next, the side portions of the canvas sheet are raised easily with the frame, because of its flexibility and the fact that the air can easily enter between said side portions and the mud adhering thereto, and in a similar manner the whole of the canvas sheet is easily lifted from the mud, the air entering at all points around its sides between the canvas frame and the mud, the central portion of the sheet being the last to adhere to the mud.

We have found by actual trial that a heavy man with the aid of these mud shoes can walk without any difficulty upon mud so soft that a pole, properly guided in its descent, can sink therein to a depth of ten feet or more by its own wei ht. l

While we speak of our invention as applied to a shoe for human beings, that being the most important use of the invention, it is understood that the invention is not restricted thereto, as horses shoes may be made in the same manner, as may also the shoes or treads for Wheels of vehicles or for any other objeotewhch lit my reqnred to moven any manner upon mud.

We claim:

`Copies of this ypatent moy" be' obtained for Washington; CJ

and secure/dat its edges to the vedges of said' frame, means for securing the frame to the fnobj ect vto* loel 'supported bythe' shoe;V and zt p'eeeof sheet metal Secured to the frame and adapted to enter the ground to prevent 15 lizheehoe slipping thereon.

'IHEODOR KURRELL.` f

HEINRICH SCHNEIDER.

JULIUS HELMS.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3032897 *16 Aug 19608 May 1962Gelineau Antonio G ODuck feet cloppers
US3082548 *29 Jan 196226 Mar 1963Hartman Edward DSand shoe
US4525941 *20 Jan 19842 Jul 1985Ruth Jr George FMud walker
US4566209 *5 Jul 198428 Jan 1986Johnson James RBoot with expanding webs
US4611411 *6 Aug 198516 Sep 1986Shlomo RinglerInflatable, multicompartment, air-cushioned mine-field shoe; pressure on ground reduced
US5168643 *25 Feb 19918 Dec 1992Laurain Larry GSound absorbing shoes
US5722188 *22 Aug 19963 Mar 1998Ewing; Ronald M.Sludge drying bed shoes
US672904915 Jan 20034 May 2004The United States Of America As Represented By The Department Of The InteriorMud walking shoe
US728434127 Oct 200523 Oct 2007Moseley Marshall GSand walking sandal
DE202007015423U11 Nov 200712 Mar 2009Schreiber, Klaus G.Trainingsvorrichtung Handschuh
DE202007015427U12 Nov 200719 Mar 2009Schreiber, Klaus G.Trainingsvorrichtung Scheibe
Classifications
U.S. Classification36/7.5, 36/116
Cooperative ClassificationA43B5/18