It is my duty to go over the bright parts on the machinery in my father's shop and give them a coat of oil late in the afternoon to prevent any rust accumulating over night. As the work took considerable time from my playing I thought of a plan that not only reduced the amount of work but applied the grease much better than with A brush or rag. I procured a sprayer, as shown in the sketch, and sprayed the oil on the bright parts. - Contributed by Waller Kaufman, Santa Ana, California.

Ill: A Sprayer Filled with Oil Makes a Good Device for Coating the Bright Parts of Machinery