Skip to main content


Improvements in the Cable Railway of the New York and Brooklyn Bridge

Salida Springs and Mines, Zirconia Minerals, and more

Hiram Sibley

The Projected Tunnel between France and England

A Safety Seal for Checks, Bonds, Etc.

An Improved Nut Lock for Valves

An Improved Drawing Instrument

A Waterproof Lining for Cellars

An Improved Wrench

New Chromatrope

Temminck's Chelydra

Simple Apparatus for Illustrating Newton's Second Law

Tire Furnace

Simple Experiments in Physics

By M. Hopkins

Agricultural Inventions - July 21, 1888

Miscellaneous Inventions - July 21, 1888

Engineering Invention - July 21, 1888

To Inventors - July 21, 1888


  • Letters

    Correspondence - July 21, 1888

  • Recommended

    New Books and Publications - July 21, 1888

  • Departments

    Notes and Queries - July 21, 1888

  • Business and Personal - July 21, 1888

  • Index of Inventions - July 21, 1888

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
July 21, 1888

Feeling Dead Inside?

Tear Into Our eBook