Structures and structural members made wholly or partly of wood

Details Structures and structural members made wholly or partly of wood Structures and structural members made wholly or partly of wood

B - Operations, Transporting

27

K

117/120

B27K 3/14 (2006.01) B27K 3/08 (2006.01) E04G 23/02 (2006.01)

Patent

CA 1103106

A B S T R A C T A wooden part of a structure or structural member, e.g. a telegraph pole,that is exposed to the atmosphere is impregnated with wood preservative by a vacuum impregnation process. The exposed wooden part of the pole is surrounded by a closely fitting, fluid- impermeable covering, e.g. a polythene shroud, and boundary edges of the covering are sealed to form a substantially fluid-tight enclosure. Air and any other fluid is evacuated from voids in the said wooden part of the pole and from within the fluid-tight enclosure and wood preservative in a flowable state is allowed to enter the enclosure and the voids in said wooden part of the pole until said wooden part is fully impregnated with wood preservative.

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