Word: tunnelling
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Dates: during 1920-1929
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...have brick masons slashing with their trowels to form a tunnel kiln, in which our raw bricks will endure a heat of approximately 2700° F., and will be fired in 72 hours instead of from six to ten weeks...
...Long Island, a plane flew straight up; dropped straight down undamaged. But it was only a tiny model plane and its flying field was a wind tunnel. So sound seemed its performance, however, that officials of the Curtiss Aeroplane & Motor Co., conservatives, reported that a life-size model will be built. The plane will have three, perhaps four, horizontal revolving wings. Its estimated rising speed will be 1,900 ft. per minute; forward speed, achieved by tilting 50 to 70 m.p.h. Dropping with motors dead, the revolving wings drag heavily; elminate landing crashes. Also eliminated are long landing fields. Mail...
...stored in a 180-foot "single wing," which is three yards thick. Two motors will be held idle for emergencies. The fuselage is long and slim, chiefly a strut to hold the tail. But before the actual ship is built, the model must be well tested in a wind tunnel, i. e.-a a stout tunnel built for aviation model tests. So terrific is the suction of the propeller set at one end to furnish air currents, that a man standing in the tunnel would be swept into the whirling blades, instantly killed...
Brick masons at East Chicago, Ind., slashed at mortar with their trowels last week, plumped bricks down to form the stringer courses of a 500-foot surface tunnel; pipe fitters twirled threads onto gas lines with their tap-&-die threader; freight gondolas dumped clay and ganister-Harbison-Walker, $36,000,000 brickmaking corporation, was having constructed a new type of kiln to burn silica brick. Corporation President J. E. Lewis had heard of the kiln operating at Dusseldorf, Germany, and after a talk with his Board Chairman H. W. Croft in their Pittsburgh offices had hurried to Dusseldorf...
Those raw bricks are to be placed on small cars and slowly passed through the 500-foot tunnel kiln which Harbison-Walker's President Lewis is having built at East Chicago. In passage they will endure a heat of 2,700° Fahrenheit. (Temperature of boiling water is 212° F.) Spoilage of bricks is expected to be trivial...