DE1969519U - KNIVES, IN PARTICULAR POCKET KNIVES OR TABLE KNIVES. - Google Patents

Description

Schwanenwerk,
Company Peter Altenbach & Sons, Solingen-OhligS9Sch.wanenstr. 26

"Knives, especially pocket or table knives"

The firing concerns a knife, in particular
Pocket or table knife, its shell or handle made of
Plastic is made of »

The known knives of the above type are distinguished from those with knife shells or handles made of metal primarily by their simpler and less expensive design
Production as well as their lower weight. However, their appearance still leaves something to be desired, especially since the plastic texture of the knife handle or shell surfaces can be seen without further ado
only appear suitable for lower quality requirements
leaves. This is also due to the fact that the knife handle or shell surfaces can only withstand external stresses, both mechanical and chemical attacks, to a limited extent, and therefore already relatively
become unsightly for a short period of use »

The innovation is based on the task of creating a knife whose plastic shell or Heft does not have the aforementioned deficiency, rather from

is much better, the known metal bowls or handles corresponding to the surface texture. That will according to the innovation essentially achieved in that the Plastic knife cup "or, the handle with a stuck on it adhesive, thin metallic coating layer is provided. As practice has shown, particularly good results are obtained here if the plastic of the knife shell or the - handle made of an aeryl nitrile butadiene styrene polymer with a chemically activated, electrically conductive surface, on which the metallic coating layer is galvanically applied is ο

The knives provided with the new, superficially metallized plastic shells or handles are externally indistinguishable from the knives with full metal shells or handles like the latter, not only a pleasing appearance, but also a correspondingly good resistance to mechanical and chemical stresses, especially against corrosion damage, as their knife shells or handles but consist mainly of plastic, they are * more economical to manufacture and lower in weight, whereby they prove to be much more advantageous and superior to the latter.

In the case of a pocket knife designed according to the innovation, there is a galvanic coating on its plastic shells advantageously made of chrome, possibly also of gold. The chrome plating layer adheres extremely firmly to the

Plastic of the knife shells and forms an effective surface protection, in particular corrosion protection. The same also applies to table knives that have been newly designed in which the galvanic coating layer their plastic booklet also from Ohrom, but also can also consist of silver or gold.

In the drawing, two exemplary embodiments of knives designed according to the innovation are shown. It shows

Figo 1 shows a pocket knife with the smaller one folded out

Blade in side view, Pig. 2 shows a section along line H-II of Pig.

and
Pig. 3 a table knife with a cut shown

Knife handle.

That in Pig. The pocket knife shown in Fig. 1 and 2 is of a conventional nature in that it has two blades 3 ₅ 4, which are hingedly accommodated between the two housing halves 1, 2, and a spring bar located between the two housing halves, holding the blades 3 and 4 in their folded-in and unfolded position and the shell halves 6, 7 that cover the housing halves on the outside. The latter can be riveted or clamped onto the housing halves 1, for example, but optionally also be connected to it by a suitable adhesive.

According to the innovation, the two shell halves 6, 7 are made of a suitable plastic, with a on it

-A-

firmly adhering, thin metallic coating layer 8 or 9 is provided. It has proven to be advantageous if the plastic of the knife shell halves 6, 7 consists of an acrylonitrile-butadiene-styrene polymer with a chemically activated, electrically conductive surface "on which the metallic coating layer 8 or 9 is applied by electroplating galvanic coating layer 8, 9 is preferably made of chrome, whereby a pleasing appearance and a very resistant surface are achieved be provided, which have been molded directly into the surfaces of the plastic shells 6, 7 during the injection or die-casting production and are correspondingly apparent in the subsequent chemical treatment in the finally applied galvanic coating layer 8, 9, but mostly from this only a few ½ millimeters thick coating layer completely are covered.

In the table knife shown in FIG. 3, the knife blade 11 with its tang 12 is also made in one suitable plastic existing knife handle 13 attached, with a firmly adhering, thin, on galvanic Ways applied metallic coating layer 14 is provided, which in this case in particular consists of chromium, Can consist of silver or gold. This gives the knife that despite its plastic knife handle Appearance of high quality table knives, although essential

simpler, cheaper and more weight-saving than the latter part of the heart.

Claims (4)

Protection claims: 1. Knives, especially pocket or table knives, whose shell or handle is made of plastic ", characterized in that that the plastic shell (6,7) or the handle (13) is provided with a thin metallic coating layer (8, 9 or 14) firmly adhering to it. 2. Knife according to claim 1, characterized in that the plastic of the knife shell (6,7) or the -heftes (13) made of an acrylonitrile-butadiene-styrene polymer with a chemically activated, electrically conductive surface on which the metallic coating layer (8, 9 or 14) is galvanically applied. 3 = Pocket knife according to claims 1 and 2, characterized in that the galvanic coating layer (8, 9) of its plastic shells (6, 7) consists of chrome _9, optionally also of gold. 4. Table knife according to claims 1 and 2, characterized in that that the galvanic coating layer (14) of its plastic handle (13) made of chrome, silver or gold consists.