DE1223723B - Projection measuring device to determine the shoe mass required for each foot - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

A43d

German KL: 71c-1/02

Number: 1223 723

File number: St 23198 VII a / 71 c

Filing date: January 12, 1965

Opening day: August 25, 1966

The previously known means (tape measure or measuring devices provided with size scales) leave one anatomical Axact determination of the measurements is not possible because the process of taking measurements, under lesser or greater stress on the foot, on a flat, hard tread surface, whereby the natural position of the foot skeleton must suffer a considerable shift, since the human foot - this is part of the knowledge of the prevailing doctrine - not for hard, level, but rather- ίο which is made for soft or uneven ground.

The determination of the dimensions in this - from a clinical point of view - deformed state of the foot can therefore never form an anatomical basis for a technically perfect miss of a shoe, in which the foot to its normal function according to scientific knowledge in standing and in the movement could be enabled.

This gap is the reason why most buyers often have many different shoes Have to try on sizes and proportions before you think you've found a shoe that seems appropriate to them.

This is also one of the reasons why a relatively large number of "made-to-measure" shoes do not fit.

The fact that the position of the foot skeleton on the inner tread surface of the shoe is very special but the positional relationship between the forefoot and the rear foot, compared to the position of a foot deviating significantly from level, hard ground must lead to incorrect results for the decisive dimensions lead, which industry, craft and retail can only counter empirically and with inadequate means tries.

The above invention breaks with conventional measurement methods. Subject of the invention is a projection measuring device, by means of its technical, quite untangled arrangement of the foot when measuring is brought into exactly the same position as it is afterwards on the inner tread in the Shoe occupies.

After the short and simple process of comparative measurement, all of the required Dimensions, clearly visible, can be read on the measuring device and recorded, with the result, that the problem of the perfect fit of the shoe chosen by the buyer with the first try-on - regardless of fashion and taste - is solved.

In the drawing shows

A b b. 1 schematically the longitudinal section of the projection measuring device,

Projection measuring device to determine the for
shoe dimensions required for each foot

Applicant:

Alfred N. Stiefel, Hanover, Georgstr. 50

Named as inventor:
Alfred N. Stiefel, Hanover '

A b b. 2 the front view and

Fig. 3 the top view.

In a housing α there is a projector b which is adjustably arranged on a base c . A switch ρ is used to connect to the mains.

The film guide is arranged transversely to an objective d , which is provided with spools e at its two lateral ends and is alternately intended for receiving and unwinding the film tape, on which the latter all sizes, proportions and widths of the inner treads of the respective shoe model selected are reproduced .

Each of the coils e is connected by a flexible shaft / to a handwheel g , with which the inner tread surfaces reproduced on the film tape can be moved to the right or to the left in front of the lens d.

The images appearing on the lens d (of the inner tread surfaces of the shoes) are transmitted by the projector to the reflective mirror h , which simultaneously projects them onto the focusing screen i , where they appear exactly in their original size.

The comparative findings of the foot with the respective inner tread surfaces in question are carried out as follows:

1. One places the foot in the unloaded state on the ground glass screen i and with the handwheel g projects a tread surface that is approximately the same as the foot onto the ground glass screen.

The metatarsophalangeal joint of the big toe is then aligned with the analog joint part of the projected tread; The position of the joint is fixed with the guide rail k, which is equipped with two movable segments I as a stop for the right and left big toe joint. The guide rail k can be moved and locked with the handwheel η .

The so fixed big toe joint has basically as the starting point for the mutually independent Measurement of the hindfoot and forefoot

609 657/46

to apply in comparison with the analog parts of the projected performance surfaces.

2. Using two alignment rails m, which can be moved over them on both sides of the focusing screen ζ, one aligns the rear foot on the longitudinal axis of the rear foot part of the projected tread, which enables an exact comparative length determination, starting from the big toe joint to the rear end of the heel.

All sizes and widths of the inner tread surfaces of the selected shoe model are reproduced on the film tape, so that only a slight turn of the handwheels g is required to project the appropriate tread surface onto the ground glass for comparative determination. The alignment rails m can be moved in length and on both sides and can be locked with the handwheels η .

The fixation of the rear foot effected by means of the alignment rails m prevents the heel from deviating during the comparison process. The heel can neither move to the dorsal (rear) nor to the lateral (outer) side, so that

3. The forefoot with its toe area must stretch towards the tips of the toes, whereby a reliable length comparison with the analog part of the projected tread area, taking into account a controllable reasonable tolerance for the free movement of the toe members will.

4. The arrangement of a paragraph base r (A b b. 3), which can be displaced in all directions, is used to store the Heel at the same heel height as the shoe, whose inner tread is projected onto the screen is equipped.

So there is absolute identity between the position of the foot on the screen and the position which he must take afterwards in the shoe.

(The sales base r, Fig. 3, has not been drawn in A b b. 1 and 2 for the sake of clarity).

The execution of the measuring device shown schematically is based on that described above and in the Details given in Figs. 1, 2 and 3 are not bound. Rather, those described above can be used Achieve effects with similarly acting parts and their analogous arrangements.

The projection measuring device according to the above application unquestionably means one for consumers Simplification when buying and gives them the impression of a professional fulfillment of their legitimate Expectations.

The device offers the possibility for the relevant industries and especially for the retail trade a statistical recording of those last shapes or the shoes made over them that on the basis of the continuously carried out, comparative dimensional controls as suitable or unsuitable prove.

Claims (4)

Patent claims: 1. Projection measuring device for determining the dimensions required for shoing feet, characterized in that this determination is made on the basis of comparisons with the inner tread surfaces of footwear and that the measuring device - for projecting the inner tread surface of footwear shown on a film passed by - a Projector (b), a reflective mirror (K) and a ground glass (z), above which - to align the feet in exactly the same position that they have to assume in the footwear on the inner stepping surface - a guide rail (k), stops ( I) and alignment rails (m) are adjustable. 2. Projection measuring device according to claim 1, characterized in that the guide rail (k) for receiving the balls of the big toes is assigned the two displaceable stops (I) and a handwheel (s) for locking. 3. Projection measuring device according to claim 1 and 2, characterized in that the alignment rails (m) serving to align the rear feet can be locked by means of further handwheels (ή) . 4. Projection measuring device according to claim 1 to 3, characterized in that for storing the Heels at a heel height corresponding to the shoe, a heel base (r) displaceable on all sides is arranged (A b b. 3). Considered publications:
French Patent No. 605,599;
British Patent Specification No. 721563,750,344. 1 sheet of drawings 609 657/46 8.66 © Bundesdruckerei Berlin