DE2045027B2 - ICE PICK - Google Patents

Description

20th

The invention relates to an ice ax, consisting of a pick iron, a pick spur and a Straight handle connecting the spur and the iron, which protrudes transversely from the iron, has an oval cross-section has and consists of a light core and a plastic jacket applied to it, the is inextricably linked to the core.

A known ice ax of this type (GB-PS 9 74 599) has the advantage over other designs that the oval handle cross-section lies comfortably in the hand when you use the pick to hack out kicks in the ice used, the plastic jacket attacking warm and the stem core against the attack of the Moisture protects.

Nowadays, however, an ice ax is no longer only used by mountaineers in the ice region to hack out Steps, where the iron serves as a tool and the handle as a handle, but often the ice ax is used in the mountaineering conquering glaciers with spurs and stems pushed far into the glacier ice, to serve as an anchor and hold for the climber's rope, feet or hands. The iron is the handle and the stalk tool. The well-known ice ax, its metallic one, is suitable for this type of use Cylindrical pick handle and its plastic coating due to the high strength of the metal without Significant strength is provided, but little because of the cylindrical stem, which is thinner in outline than the Spur is, on the one hand, not being able to find a reliable hold by simply ramming into the hard snow On the other hand, it is difficult to pull Bur out of the hard snow or ice because of the protruding spur outline Cheeses. In addition, the weak plastic coating would soon be worn out due to its loose fit in the ice be disturbed.

For best results from this modern pimple use as iron anchors are achieved with tapered oval handles by tapering the handle starting from the iron ensures that the pimple sits securely in a natural or artificial opening in the glacier ice, However, thanks to the non-circular oval cross-section, it is easy to do by simply rotating the pick iron can be solved again.

Although this common type of usage is the most demanding on the pick handle, it does exist with the known pimples of this type made of wood, so as not to weigh too much as the largest component in terms of volume to fall. Wooden stems are quickly leached out by the ice water and then soon lose their smooth appearance Surface. The conical tapering is interrupted by numerous steps that prevent the ramming into the Make ice difficult. The non-circular cross-sectional shape is gradually lost by rounding and it becomes difficult to get the pimple seat in the ice by turning, - iron to loosen. In addition, the leached porous wood is soaked in ice water and in the ice frozen solid. Last but not least, the strength of the wooden handle decreases continuously. Try metal handles have only shown that because of the good thermal conductivity of the metal, there is a risk of freezing from the start!

The object of the invention is to overcome the disadvantages of the known pick handles and To create an ice ax that also perfectly does justice to the extreme type of use as an ice anchor The invention is based on an ice ax of the type described above, which with regard to Stielquerschniu and insulation has the best conditions. and consists in the fact that the stem is, as is known per se. tapered conically towards the spur and that in the plastic jacket, which is preferably made of epoxy resin consolidating fibers and / or fabrics in a random or in a certain direction and position are incorporated.

As mentioned, this stem tapering is only possible with unprotected wooden planks, in particular also known from earth staples, while the fiber reinforcement of the plastic jacket has only been known so far for tool handles that are only ever used as a handle and never as a Tool used, like a pickaxe. For example, the well-known fiber reinforcement of the plastic jacket is used of a hammer handle not to reinforce the handle surface, but only to increase the Breaking strength of the hammer handle so that it can consist of cheaper wood (US-PS 31 15 912).

So far, people have shied away from the plastic coating on pick handles known from hammer handles to be used because, due to the low coefficient of friction known from skis, many Plastic feared against ice and hard snow. the desired frictional engagement in the ice will not be achieved Come about. The invention has shown that certain plastics with a relatively high static coefficient of friction such as B. epoxy resin in conjunction with the relatively small The taper of common pimple stalks gives a firm hold in the ice.

The combination according to the invention makes it possible for the first time to pass the pimple without the risk of freezing Simply ramming the handle into the hard snow or soft ice of the high mountains over the entire length of the handle to anchor firmly, to load this anchor high without risk of wear and after use by a short Turning the pick iron to loosen it, whereupon it can be easily pulled out of the ice. The fiber-reinforced The plastic sheath of the handle can withstand even the highest levels of stress and can retain its insulating, adhesive and releasing function including a substantial solidification of the pimple handle in the long term fulfill.

Plastics generally have a high level of water resistance and low thermal conductivity, Epoxy resin also has an excellent grip and a relatively high static coefficient of friction compared to ice or hard snow, which improves the tight fit. The ones in the plastic jacket incorporated fibers or fabric ensure again

«A surface strength that is so high that the non-round conical handle shape is secured in the long term even in the toughest use of modern ice technology. Of the Protected, isolated and relieved core can be particularly easily, e.g. B. designed as a hollow tube or porous and made of wood, plastic or metal. The coat can be single or multi-colored or in Be luminescent paint. Colored3 StieL protect against unpleasant mix-ups, are in case of loss or also a! j marking easier to recognize and be able to

w ill be kept in camouflage for military purposes.

In the drawing, an exemplary embodiment of the ice ax according to the invention is shown. It shows

F i g. 1 shows an overall view of an ice ax and

F i jj. Figure 2 is an enlarged cross-section of the stem.

As can be seen from the cross section of FIG. 2 as can be seen, the stem consists of an inner core 3 and an outer epoxy resin sheath b. The core a has an oval cross-section and is tapered from the pimple iron to the pimple spur.

1 sheet of drawings

Claims (1)

Claim: Ice pick, consisting of a pick iron, a pick! S "~ rr. ^ O as a s" orn and iron connecting straight handle that protrudes transversely from the pick iron, has an oval cross-section and is made of consists of a light core and a plastic jacket applied to it, which is inseparable is connected to the core, characterized in that the stem itself, as in itself known, tapered conically towards the spur (Fig. 1) and that in the preferably made of epoxy resin existing plastic sheath solidified fibers and / or tissue in random or in certain Direction and location are incorporated.