Arrangement for manufacturing curved wall portions of heat insulating walls

An arrangement for manufacturing curved wall portions of a heat insulating wall for a container and particularly for cutting a block for a heat-insulating synthetic foam material with a contour embracing a section of a container surface to be insulated, the arrangement comprising a chain saw having a cutting tool which runs along an outer edge of a flexible web and has turning axes in which it is driven for running, said chain saw having two spaced ends;

• means for running said cutting tool along said outer edge of said flexible web of said chain saw and including two rotary elements;
• upright guiding elements each located at a respective one of the end of the chain saw and arranged to guide the latter for upward and downward movement between a plurality of vertical positions;
• means for displacing said chain saw in a vertical direction and including two displacing elements each arranged to act upon a respective one of the end of the chain saw in synchronism with one another and being parallel to said guiding elements;
• means for allowing the turning axes of the cutting tool of the chain saw to be inclined relative to one another and about a horizontal axis extending in a cutting direction between a plurality of inclined positions;
• and means for moving the block in vertical and horizontal directions relative to said chain saw.