Creosoting

—The proce of impregnating timber, with creosote as a preservative. The kiln or creosoter is a circular tube perhaps 100 feet long, into which four wheeled trucks are run, these being loaded L with the sleepers so as to correspond with the cro section of the kiln. he door is sealed when full, external steam he at applied and an exhausting air pump set in motion to draw all air and moisture - from the pores of the wood and the interior of the kiln. When a sufficiently high vacuum is attained, boiling creosote is forced into the kiln until a pre ure of 15 to 25 lbs. per sq. inch is reached, the pre ure being maintained until the timber can absorb no mors. The superfluous creosote is then run off, the door opened, and the cars hauled out; the sleepers being stacked in the stock yards by overhead transporters.