US 3380123 A
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Description (OCR text may contain errors)
Apnl 30, 1968 o. SCHMIDT 3,380,123
APPARATUS FOR THE MANUFACTURE OF SHOES WITH AN INNER LEG, PARTICULARLY sKI-BooTs Filed March 3, 1966 United States Patent 3,380,123 APPARATUS FOR THE MANUFACTURE OF SHOES WITH AN INNER LEG, PARTICU- LARLY SKI-BOOTS Oskar Schmidt, Weyrgasse 6, Vienna, Austria Filed Mar. 3, 1966, Ser. No. 531,585 Claims priority, application Austria, Mar. 8, 1965,
2,052/65 7 Claims. (Cl. lit-42) The present invention relates to an apparatus for the manufacture of shoes with an inner leg, particularly skiboots.
The apparatus is adapted for the performance of a method for the manufacture of such boots, according to which an inner leg mounted on a last is provided with an outer shoe by insertion during the manufacture in a hollow mold of a liquid and paste-like, respectively, synthetic materialand rubber mass, respectively.
It is one object of the present invention to provide an apparatus for the manufacture of shoes with an inner leg, particularly ski-boots, which comprises a preferably multi-port hollow mold, into which a last carrying the inner leg of the shoe, as well as a hollow member covering the leg to a desired extent and receiving corresponding parts of the latter.
It is another object of the present invention to provide an apparatus for the manufacture of shoes with an inner leg, particularly ski-boots, wherein the hollow mold is formed of two half bowls and a bottom part equipped preferably with a receiving opening.
If the above stated method is to be performed by applying dilferent masses for the outer leg and sole, in accordance with the further development of the present invention, the bottom part can be arranged for a variation of its hollowvolume of the mold displaceably and/or exchangeably.
The last carrying the inner leg is suitably pressable to the hollow part by clamping means as, for instance, a pulling cord, a pulling rod and the like, also magnetically.
With these and other objects in view which will become apparent from the following detailed description, the present invention will be clearly understood in connection with the accompanying drawing, in which:
FIGURE 1 is a section along the lines A-B of FIG. 2; and
FIG. 2 is a section along the lines C-D of FIG. 1.
Referring now to the drawing, the apparatus comprises a last 1 on which an inner leg 2 of leather is mounted. While it is suitable to combine the leg leather with the inner sole by means of a seam, also any other known expedient can be applied. A hollow member 6 is mounted on the leg or to say more exactly, on the inner leg disposed thereon, whereby the last is pressed to the hollow member 6 by means of any tensioning means 8. Thus, a sealing point and a sealing edge 9, respectively, results up to which the leg leather is uncovered and from which further portions of the leather are covered and are received in the hollow 7. The mentioned parts are formed of two half bowls 3 and 4 and the body portion 5. The half bowl 3, shown in FIG. 1, is not cross-hatched, since the engaging face of the two half bowls 3 and 4 coincides with the section plane A-B. The hollow portion 6 and the non-covered part of the inner leg 2 are shown in elevation. The bottom portion 5 has a filling opening through which liquid and paste-like, respectively, synthetic material or rubber mass can be fed into the mold.
In accordance with the usual 'technic, the surfaces of the molds coming in contact with the penetrating synthetic material and the hollow part 6 are treated with a separating agent, in order to avoid an adhesion of the 5 synthetic material. It should be mentioned, that it is possible and advantageous by means of a proper formation of the half bowls and under certain circumstances by the arrangement of insertion wedges or the like, to form the outer shoe within the range of the instep into 10 separate, preferably overlapping parts. If, in accordance with the manufacturing process, the hollow mold is opened, the hollow part 6 can be removed from the formed shoe. The deformed shoe thus shows an inner leg which is non-removably connected in the shown embodiment up to the height of the ball with the outer leg. It is to be understood that by the formation of the hollow 7 and as a matter of fact of the hollow part 6, the connecting line between the inner leg and the outer leg of the shoe can be produced in any desired manner.
The apparatus in accordance with the present inven tion permits also the application of the method in the simplest manner with different masses from the outer leg and for the sole, respectively. If, namely the bottom portion 5 is designed displaceably and exchangeably relative to its penetration depth, the outer leg can be formed in a first process step and then after corresponding adjustment of the bottom portion 5 and the exchange of the inner sole, respectively. Furthermore, by insertionof parts and, if desirable, a stiffening for the sole in the mold, these parts can be simultaneously secured on the shoe or in the shoe during its manufacture. Even if the arrangement of the filling opening 10 in the bottom portion 5 appears particularly advantageous, one or a plurality of such openings can be of course provided at another point of the hollow mold.
While I have disclosed one embodiment of the present invention, it is to be understood that this embodiment is given by example only and not in a limiting sense, the scope of the present invention being deter- 40 mined by the objects and the claims.
1. An apparatus for the manufacture of shoes with an inner leg, particularly ski-boots, comprising a multi-part hollow mold,
a last carrying the inner leg of the shoe, and
a hollow part covering said leg to a predetermined extent and receiving corresponding parts of said last, and
said last and said hollow part being insertable into said hollow mold.
2. The apparatus, as set forth in claim 1, wherein said hollow mold comprises two half bowls and a bottom part having a filling opening.
3. The apparatus, as set forth in claim 2, which includes means for displacing said bottom part for variation of the hollow volume of said hollow mold filled by said bottom part.
4. The apparatus, as set forth in claim 2, which includes means for exchanging said bottom part for variation of the hollow volume of said hollow mold filled by said bottom part.
5. The apparatus as set forth in claim 1, which includes tensioning means for pressing said last to said hollow part. 6. The apparatus, as set forth in claim 5, wherein said tensioning means comprises a pulling cord.
3 4 7. The apparatus, as set forth in claim 5, wherein 3,160,921 12/1964 Ludwig. said tensioning means comprises a pulling rod. 3,302,244 2/1967 Ludwig.
FOREIGN PATENTS 849,917 9/1960 Great Britain.
References Cited UNITED STATES PATENTS 5 2,357,360 9/1944 Rollmann. J. HOWARD FLINT, IR., Primary Examiner.
3,067,467 12/1962 Yanush -1846X