Evening Republican, Volume 22, Number 109, Rensselaer, Jasper County, 9 May 1919 — Aluminum Plating. [ARTICLE]

Aluminum Plating.

An aluminum plating for airplane propellers has been devised for the purpose of protecting the Wood from the Influence of the weather, which has been a serious problem heretofore. The plating is a thin leaf which is incorporated in the finish of the propellers, and the idea was developed by the forest products laboratory at Madison, Wis., and placed in production by the war department. The process Is practically 100 per cent effective in preventing absorption of water, particularly in the storage stage. -A French authority states that 80 per cent of the French propellers produced are rejected by the pilots mainly because they are out of balance. This difficulty is due largely to unequal absorption or distribution of moisture and can be greatly reduced by an effective waterproofing coating.