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Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .. (1899)

Boyd, James Penny, 1836-1910 · Philadelphia, Pa., A. J. Holman & Co · leaf 611

An illustration from Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .., 1899, leaf 611
whole city block. Before the middle of the century the use ofpowder and drill had largely increased, and in 1845 an attempt was madeto aid the man behind the drill with a machine which swung a hammer bysteam power. In 1865 a machine was invented using compressed air in acylinder, and this was… … INGERSOLL-SERGEANT STRAIGHT LINE AIR COMPRESSOR. back and forth by compressed air or steam. The machine has three func-tions : to strike the blow, turn the drill, and advance it, as the hole is drivendeeper and deeper. Soon after the machine drill became a success dynamite was invented, andthese…

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