US2000949A - Foot arch support - Google Patents

Description

y 1935- I J. HELLER 2,000,949

FOOT ARCH SUPPORT Filed Feb. 24, 1933 L/ULIUS #5445 by hrs afforneys.

Patented May 14, 1935 UNITED STATES PATENTY OFFICE 2,000,949 V V FOOT ARCH SUPPORT Julius Heller, Neunkirchen, Austria, assignor to firm Schraubenund Schmiedewaarcnfabriks- Actiengesellschaft Brevillier & Co; und A. Urban & Soehne, Vienna, Austria, a company of Austria Application February 24, 1933, Serial No. 658,395

8 In Austria March l, 1932 4 Claims. (01. 36-71) The invention relates to a foot arch support for elastically supporting the foot in which support there is a tensioning device that may be actuated by turning to bring about the adjustment of the supporting springs. These foot supports areparticularly advantageous for the reason that the aforesaid type of tensioning device to be actuated by turning for instance a screw lock, makes it possible to adjust the spring tension in the simplest manner. Nevertheless such foot supports possess a deficiency consisting in that the screw lock, although the screws are selflocking, may open automatically and unintentionally owing to the high strainsto which the lock is exposed. It has been attempted in vain up to now to remove this.

The invention does away with this deficiency by providing the tensioning device with stops which during the use of the foot support permit the tensioning device to turn in the opening di-- rection only within predetermined limits.

In the drawing is shown a constructional form of the subject matter of the invention selected by way of example. Fig. 1 shows the foot support in inverted plan view, Fig. 2 shows a section of the foot support and the screw lock.

The top plate 2 is secured to the insole 'l in a known manner and on that are secured the longitudinal bent spring 3 and the heel spring 4. 5 is the base plate and between this and the top plate 2 is interposed the tensioning device. The tensioning deviceconsists of two screw threaded screw bolts 8', l enclosed by a nut 8 in common to them. This screw lock or its rotatable part is provided, according to the invention, witha bore 9 perpendicular to the axis of the screw lock and in this bore is slidably mounted an arm I0 enlarged at both of its ends. The length of this arm is greater than the distance between the topplate 2 and the inner surface of the shoe sole l l.

The tensioning of the longitudinal bent spring 3 and of the heel spring 4 in order to adjust the curvature of the top plate 2, is effected by turning the screw lock sleeve 8 by means of the arm [0. After the proper tension of the springs has been adjusted, the foot support is brought into position in the shoe. If now owing to the great strain to which the foot support is exposed, the screw lock tends to move in the opening direction, that is to say, if the lock sleeve 8 is turned in the opening directiomthis turning cannot exceed a predetermined extent, since the arm I0 owing to its length, strikes either against the top plate 2 or against the inner surface of the shoe sole I I, or against both of them simultaneously, thus acting as a stop which prevents under any circumstances an unintentional continued turning of the screw sleeve 8 in the opening direction.

I bore.

Thus the invention provides afoot support in which the tension of the supporting springs once adjusted is permanently maintained.

. Instead of the screw lock any desired-tensioning mechanism may be used, in which byturning a tensioning element a movement of the tension varying members is brought about, for instance bolts engaging helical surfacessimilarly as in bayonet clutch or the like. In a similar manner also any otherstops on the foot support or;

on the adjacent parts of the shoe may be provided. I

What I claim is: 1. A foot arch support comprising plate means,

supporting springs connected with said plate means, means for adjusting the tension ofthe said supporting springs, said last named means including an element adapted to turn, means in permanent engagement with said element for limiting the turning of said elementinone direction to a predetermined limit by engagementwith said plate means.

2. A foot arch support comprising meansfor supporting the foot arch, supporting springs for adjusting the curvature of said means, means for adjusting the tension of the said supporting springs, said last named means including an element adapted to turn, means in permanent engagement. with said element for turning said element and serving as a stop forlimiting the turning of the said element in one direction to a predetermined limit by engagement with said supporting means.

3. A foot arch support comprising supporting springs, a screw lock comprising two coaxial screws connected with said springs, and a nut engaging both of the said.screws, a transverse bore in the said nut, an arm slidably mounted in the said bore for limiting the turning of the'said arm together with the said nut in one direction to ,a'predetermined limit, and enlargements on the arm greater in at least one transverse dimensprings resting on said sole-with said top plate uppermost, a screw lock comprising two coaxial screws and a nut engaging bothof said screws for adjusting the tension of said supporting springs, a transverse borein said nut, and an arm slidably mounted in said bore, the length of said arm being greater than the distance between said sole and said top plate, said farm being provided with enlargements at both of its ends for preventing it'from slipping outof said JULIUS

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