Buckles – buttons – clasps – etc. – Button with fastener
Patent
1989-10-16
1991-08-06
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Button with fastener
24113R, 24113MP, A44B 112
Patent
active
050365665
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a clasp having coverable clasp parts, comprising a clasp upper part of approximately dish-shaped cross section and, pressable into the latter, a clasp lower part of approximately dish-shaped cross section, the open upper and lower part sides facing one another and the internal space of the dish serving to receive the ends of the covering material surrounding the clasp upper part.
Furthermore, the invention relates to an apparatus for producing the clasp described above, comprising a lower tool for receiving the clasp lower part and an upper tool for receiving the fabric-covered clasp upper part, the lower tool having a lower part in which an inner core section is mounted and an outer core section comprising a base plate and a peripheral collar which engages in a gap, which is formed between the lower part and the inner core section and into which the clasp lower part is insertable, and at least the lower part being resiliently supported against the base plate, and the upper tool comprising an inner core section and an upper part surrounding the latter such that between this there is formed a peripheral gap for receiving the clasp upper part with the fabric cutout, in which an outer core section is displaceably guided.
This known apparatus serves to produce clasps covered with fabric, whereof the upper and lower surfaces run parallel to one another. Clasps in which the upper and lower surfaces do not run parallel to one another are currently of massive construction and have to be covered by hand, which is however expensive and time-consuming from a manufacturing point of view.
The present invention is based on the object of providing coverable clasps having upper and lower surfaces not running parallel to one another, these clasps being producible by machine, and an apparatus therefor.
According to the invention, this is achieved for a clasp of the type described at the outset in which the lower and upper surfaces do not run parallel to one another, the underside of the clasp lower part forming the lower surface running parallel to the open plane of the underside of the clasp upper part and the open plane of the upper side of the clasp lower part running parallel to the upper side of the clasp upper part forming the upper surface.
Based on this embodiment according to the invention, an apparatus of the type described at the outset can be used in accordance with the invention for its production, in which a reference plane running perpendicular to the axis of tool closure and separating movement is formed in the lower tool for receiving the clasp lower part, and a receiver having a bearing surface running obliquely to the axis is constructed in the upper tool for the clasp upper part and separating and shaping surfaces are constructed in the tools, these surfaces running at the same inclination to the reference plane as the upper surface of the clasp upper part does to its underside. Alternatively, a reference plane running obliquely to the axis of tool closure and separating movement at the same inclination as the upper surface of the clasp upper part does to its underside may be constructed in the lower tool for receiving the clasp lower part and a receiver having a bearing surface running perpendicularly or obliquely to the axis X--X may be constructed in the upper tool for the clasp upper part and separating and shaping surfaces may be constructed in the tools, these surfaces running perpendicular to the axis X--X.
Based on the invention, despite the existing asymmetry in the shape of the clasp, there is provided an unambiguous reference surface running perpendicular to the axis of tool closure and separation and permitting unambiguous association of the tool parts to one another.
Further advantageous embodiments are set forth below.
With reference to the exemplary embodiment of the clasp according to the invention and the apparatus according to the invention shown in the attached drawings, the invention will now be explained in more detail.
In the drawings:
FIG. 1 shows a
REFERENCES:
patent: 1118555 (1914-11-01), Kanter
patent: 1484382 (1924-02-01), Allitt
patent: 2214030 (1940-09-01), Pereles
patent: 2643430 (1953-06-01), Koehl et al.
patent: 2654927 (1953-10-01), Tansman
patent: 4471510 (1984-09-01), De Rosa
patent: 4549331 (1985-10-01), Coley
patent: 4654934 (1987-04-01), Hasegawa
Kuhn Elmar
Timmerbeul Hans-Jurgen
Wittke Gunter
Astor-Werk Otto Berning & Co. (GmbH & Co.)
Sakran Victor N.
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