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Scientific American Supplement, No. 312, December 24, 1881   By:

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[Illustration]

SCIENTIFIC AMERICAN SUPPLEMENT NO. 312

NEW YORK, DECEMBER 24, 1881.

Scientific American Supplement. Vol. XII., No. 312.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

TABLE OF CONTENTS.

I. ENGINEERING AND MECHANICS. Improved Fifteen Ton Traveling Crane. Designed for service in the construction of Port Alfred Harbor. South Africa. 3 figures. 4967

Improved Steam Boiler. 1 figure. 4968

The Elevated Railways of New York. 4968

Some of the Developments of Mechanical Engineering during the Last Half Century. British Association Paper. By SIR FREDERICK BRAMWELL. The steam engine. Evaporative condenser. Steam navigation. Marine governors. Light engines and boilers. The Perkins system. Ether engine. Quicksilver engine. Locomotive engines. Brakes. Motors. Transmission of power. Compressed air locomotives. Hydraulic transmission of power. Electric transmission of power. The manufacture of iron and steel. Bridges. Machine tools. The sewing machine. Agricultural machinery. Printing machinery. 4968

Amateur Mechanics: Metal turning, 29 figures. Rotary cutters, 12 figures. Wood working and lathe attachments, 9 figures. 4971

A New Method of Keeping Mechanical Drawings. 4978

Achard's Electric Brake for Railway Use. 2 figures. Plan and elevation. 4974

II. ELECTRICITY, ETC. Electricity. What it is and what may be expected of it. By JACOB REESE. 4974

Electric Light Apparatus for Photographic Purposes. By A.J. JARMAN. 2 figures. 4976

Desruelles's Electric Lighter. 1 figure. 4976

Solenoid Underground Wires in Philadelphia. 4976

Dr. Herz's Telephonic Systems. 2 figures. 4976

Decision of the Congress of Electricians on the Units of Electric Measures. 4977

Secondary Batteries. By J. ROUSSE. 4977

III. TECHNOLOGY AND CHEMISTRY. Domestic Sugar Production. 4980

M. Garnier's New Methods of Photo Engraving. By Major J. WATERHOUSE. Photogravure. Photograph printing by vapor. Atmography. 4982

Dangers of Pyrogallic Acid. By DR. T.L. PHIPSON. 4982

IV. ARCHITECTURE, ETC. Artists' Homes, No. 12. Wm. Emerson's house, Little Sutton, Chiswick. Full page illustration and large size longitudinal section. 4978

Memorable English Houses. 4 figures. Newton's house. Flaxman's house. Canning's house. Johnson's house. 4980

V. GEOGRAPHY. Herald Island. On the summit. A midnight observation. Plant life on Herald Island. Inhabitants of the cliffs. 4980

VI. METALLURGY. The Treatment of Quicksilver Ores in Spain. 4977

VII. AERONAUTICS. The Balloon in Aeronautics. 4977

VIII. BIOGRAPHY. Franz Liszt. Large Portrait. 4981

IMPROVED FIFTEEN TON CRANE.

[Illustration: Engraving.]

[Illustration: Side and Top View Plans. IMPROVED FIFTEEN TON TRAVELING CRANE.]

The machine illustrated on first page has been constructed for Port Alfred Harbor, this being one of several harbors now being made by Sir J. Coode in South Africa. The pier for the construction of which the crane will be employed will consist of concrete blocks laid on what is known as the "overend system... Continue reading book >>


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