Page:Popular Science Monthly Volume 88.djvu/367

 Popular Science Monthhf

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��Piling Lumber in Forty-Foot Monumental Stacks

A MECHANICAL lumber - stacker which has recently been placed on the market has made possible a ^reat saving in lumber yard space in our large cities. The Edison Monthly states that it is now possible to pile planks to the height of forty or more feet with a crew of four men, while in the past piles sel- dom reached a greater height than twenty-four feet.

The machine is electrically operated, and consists of a steel skeleton tower of the desired height, over which revolve two endless chains. Carriers are attached to these chains at short interxals. C)n these, planks are placed by workmen on the ground. Ten boards a minute are delivered by the carriers to the men on the top of the pile. One of these stack-

����This electric stacker will pile lumber forty feet high with perfect facility

��This round barn is made of reinforced

concrete, eight inches thick. The lofv.

has neither beams nor posts

ers is said to have piled one hundred and twenty-five thousand feet of lumber in

ten hours.

Circular Barn Built of Concrete

APIOXEER reinforced concrete, round barn, the first of its kind, and onl}' one known to exist in the United States, has been completed on the farm of Harry McDaniel, near Dover, Del.

The barn is seventy-two feet in di- ameter and sixty-four feet high, the concrete walls being twenty feet high and eight inches thick, reinforced. It has a cupola five feet high and ten feet in diameter, with eight windows. It took thirty-one thousand shingles to cover the building.

The most remarkable part of the building is the loft, which has no posts, no beams, no girders of any kind. The loft has a capacity of about three hun- dred tons of hay. There is a circular track, thirty-five feet above the floor, used in conveying the hay to the remot- est part of the loft.

The lower floor of the barn has thirty stalls for milch cows and eighteen stalls for horses, with a space in the center for twenty-five head of young stock. The building is two hundred and twenty- six feet in circumference.

ACCIDENT insurance is compulsory among the workmen in Holland, but other insurance is optional.

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