Skip to main content


The Four-Day Liner

The Scientific American Gold Medal for Safety Devices

Theory and Practice

Three Months of Denatured Alcohol

The Current Supplement

The Evaporation of Solid Metals and their Compounds

A Great Ice Jam on the Susquehanna River

A Time-Controlled Phonograph

A Combined Sleeper and Chair Car

The Construction of a Magnetic Detector

By Edward G. Gage

A Continuous Variable-Speed System of Rapid Transit

How Church Bells are Cast

By F. P. Lotz

The Gyroscope as a Compass

By A. Frederick Collins

A Babylonian Vase Inlaid with Ivory and Precious Stones Dating from 4500 B. C

By E. J. Banks

A Lecture Room on a Railroad Train

By Katherine Louise Smith

An Unsinkable Motor Lifeboat

By L. Ramakers

A Wire Rope Railway Used in the Construction of an Italian Fortress

By Alfred Gradenwitz


  • Departments

    Recently Patented Inventions

  • Notes and Queries

  • Index of Inventions

  • Patents

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
Scroll To Top