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Features

The Coal Bunkers at New Tacoma, W T

Repairing Suspension Bridge Cables

Trial of the Haskell Multicharge Gun

The American Institute Fair

Improved Vise

Hollow Auger

Cross Cut Saw Frame

Improved Grain Elevator

Adjustable Telephone Receiver

The Electro-Magnetophone

Tissandier's Electric Balloon

Trace Buckle

Hame Fastener

Hame Tug

Engineering Inventions

Financial

Agricultural Inventions

Insurance

Manufacturing Notes

Mechanical Inventions

Miscellaneous Inventions

Departments

  • Departments

    Correspondence

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

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