CLASS D, “STANDARD” BOWLING ALLEYS.

CONSTRUCTION. The beds rest on sleepers supported at their ends by sills running the entire length of the alleys. These may rest on a concrete, cement, or other solid floor, or on posts or piers set 8 ft. apart, or where the ground is firm and dry of a gravelly nature, on flat stones laid on the ground. The sills raise both sleepers and bed clear of the ground or cement, and as there is ample air space beneath them they are not liable to be affected by moisture which nearly always collects in confined places near the ground. The beds are made of strips three inches wide, tongued and grooved on the sides, (see page 14) and are built up by nailing and glueing each strip on top of the preceding one until the bed stands on edge 42 inches high: in this way the strips are firmly driven together and a solid bed secured. The bed is then laid down, screwed to the sleepers and planed.

DURABILITY. This is secured, first by the use of good well-seasoned timber. Second by the ample air space beneath the alleys. As we use large quantities of the Hard White Maple of which the beds are made, we have arranged with several of the largest mills in the country to select from their finest stock the best for our use, shipping in car-load lots. No such timber can be found in any city yards. The Sills and Sleepers are of Selected Hard Pine, known as one of the most durable woods. As none of the woodwork is bedded in cement or in any way closed up there is no tendency to dry rot, and it cannot be affected by any ordinary degree of moisture. By long experience in alley building we have ascertained the most durable materials for different parts and their best forms, features that save wear and avoid early and expensive repairs.

CROSS SECTION OF A PAIR OF CLASS C. ALLEYS.