Scientific American Magazine Vol 54 Issue 20

Scientific American Magazine

Volume 54, Issue 20

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Features

The Brush Electric Works at Cleveland, Ohio

H. C. Hovey

State Interference with Patents

The Proposed Extension of Patents

The Aladdin Cooker

Discovery of Two New Comets

White Rubber Back Square Piston Packing

Combined Chimney and Ventilator

Listed Corn Cultivator

Pressure Gauge

A Compound Lever Pinch Bar for Moving Cars

Powerful Automatic Car Coupler

A Novel Steam Engine

Centrifugal Speed Indicator

A Singular Effect of the Action of Frost

How to Carry Water in a Sieve

T. O'conor Sloane

Who Invented the Ratchet Brace?

Argus Peacocks in the Berlin Zoological Garden

Miscellaneous Inventions - May 15, 1886

Engineering Inventions - May 15, 1886

Departments

Correspondence - May 15, 1886

New Books and Publications - May 15, 1886

Business and Personal - May 15, 1886

Notes and Queries - May 15, 1886

Index of Inventions - May 15, 1886

Patents