The Project Gutenberg EBook of Scientific American Supplement, No. 312,
December 24, 1881, by Various

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

Author: Various

Release Date: February 22, 2006 [EBook #17817]

Language: English

Character set encoding: ASCII

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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. 49