DE886219C - Process to free installed wooden parts, in particular masts, from existing plant or animal destroyers or to protect them from attack - Google Patents

Description

Procedure to remove built-in wooden parts, especially masts, from existing ones to free plant or animal destroyers or from their "attack" It is already known to artificially protect all types of wood by means of high-frequency currents to dry. This drying can be carried out in a short time and offers over the In addition to the time savings that can be recorded compared to natural drying Possibility of stronger and very even drying.

In patent C82 375, which deals primarily with the design the electrodes between which the electric field is generated is also dealt with mentions that during drying by means of the action of electric fields too animal pests inside the wood can be destroyed.

Furthermore, in the patent 724 C84, a process for soaking of objects made of wood and other impregnating materials described in which the Soaking liquid in an existing or specially created cavity of the to be soaked introduced and this together with the housed in it Cloudy fluid is exposed to the action of alternating electrical fields. According to this process, wood, for example, is heated in the presence of the soaking liquid.

In contrast to this known procedure, the invention proposed built-in wooden parts, especially masts, from existing vegetable and to free animal destroyers or to protect them from attack by the built-in wooden parts in the endangered areas due to the effects of high frequency Currents up to a maximum of i2o ° in order to kill any fungi that may be present or insect larvae and expulsion of any moisture present are heated and immediate then with suitable wood preservatives taking advantage of those created in the wood Air dilution can be impregnated deeply.

So z. B. masts in the track in the earth-air zone in one Range from z. B. 40 cm above and below ground level or in the area of the infestation be treated in this way by insect larvae. As a result of the extensive Expulsion of the air from the wood when heated by the high-frequency currents is a particularly effective, in-depth impregnation of the wood with the Protective means guaranteed. It has been shown to suit most needs the use of a heat generator with an output of 1.5 kW is sufficient. These handy units can be easily attached to the respective Acquire places of need and often easily from an existing network Food.

In the case of standing masts, it is advisable to use the previously heated area a container for receiving the respective impregnation solution is attached. With wood lying on the ground the heated area is surrounded by a tub-like container. In the earth-air zone Chemical soil consolidation can also be used to create a container will. The wood preservatives can also be used in paste form after the wood has been heated or applied by brushing or spraying.

In the case of wooden parts installed in the ground, in particular masts, according to the invention in addition to this impregnation, the soil in the area of the endangered areas be replaced by bulking agents that are low in nutrients and low in water Aggravate the infestation of the wood by wood-destroying fungi. Depending on the location and nature of the soil is the soil replacing filler to a depth of about 40 cm and about 5o cm wide. Instead of a special filling compound a suitable, easily obtainable soil can also be used. One can also enrich the filling compound with fungicidal chemicals.

In the case of wooden parts built into the masonry, according to the invention, too the masonry that is moistened or streaked with mycelium from the heating dried out and / or sterilized by means of high-frequency currents. In this case it will especially with thick masonry a larger heat generator of io or 2o kW power required.

The new process is particularly at risk for protective treatment or locally attacked areas of built-in wooden parts in all areas suitable.

This also applies to engineering structures made of wood. According to the invention, this can new processes also for the treatment of particularly endangered areas that are not obstructed Woods such as B. beam heads are used.

Claims (3)

PATENT CLAIMS: i. Process to built-in wooden parts, in particular Masts, to be freed or removed from existing plant or animal destroyers. to protect against their attack, characterized in that the built-in wooden parts in the endangered areas in a manner known per se due to the high frequency exposure Streams to a maximum of i2o ° for the purpose of killing any fungi or insect larvae that may be present and expelling any moisture present, and immediately thereafter in a manner known per se with suitable wood preservatives taking advantage of the The air dilution created in the wood can be impregnated deeply. 2. Procedure according to claim i, characterized in that in the case of wooden parts installed in the ground, in particular masts, in addition to this impregnation, the soil in the area of the Vulnerable areas are replaced by bulking agents that are low in nutrients and low in water making it difficult for the wood to be attacked by wood-destroying fungi. 3. Procedure according to claim i, characterized in that in the case of wooden parts built into the masonry also the masonry that is moistened or permeated by the mycelium due to the action high-frequency currents is dried out and / or sterilized. Application of the procedure according to claim i for the treatment of particularly endangered areas of unused wood, such as B. beam heads. Referenced publications: German patent specification No. 682 375.