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Electric Launches at the Columbian Exposition

More Engineers Needed for the Navy

The Columbia, the New Commerce Destroyer

A Readily Adjustable Camera Stand

Improved Cross-Cutting Saw

An Improved Rotary Engine

An Extensible Electric Light Support

A Coin Holding and Delivering Device

New Fire Alarms

A Quick and Sure Chicken Beheader

A Metallic Bookcase

Improvements in Shapers

Four Hundred Horse Power Mill Engine

A Simple Gas Meter Connection

Securing Propeller Blades to the Hub

The Triple-Screw War Ship Columbia

To Inventors


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    Business and Personal

  • Recently Patented Inventions

  • Notes and Queries

  • Index of Inventions

  • Patents

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November 25, 1893

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