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Features

Improved Self-Acting Fire Tank

A Novel Traction Engine for Rapid Transit

Power Railway Brakes

Honor to Whom Honor is Due

Explosions Produced by High Musical Tones

The Proposed Introduction of Water Meters in Cities

The Sewing Machine Monopoly

The International Metric Commission and Its Work

The Annexation of Brooklyn to New York

Collapse from Low Water in Steam Boilers

Improvement in Safety Valves

Registering Tell Tale Clock

A New Bottle Stopper

Stilwell's Lime Extracting Heater and Filter

Self-Lighting Signal Lantern

Local Boiler Inspection

Combined Blacking Brush, Box, and Holder

A Novel Form of Key

Astronomical Notes

Scientific and Practical Information

Emerson's Diamond Stone Saw

New Method of Attaching Handles to Saws

Instrument for Measuring Fibers

The New Parliament House in Berlin

Decisions of the Courts

United States Circuit Court

Recent American and Foreign Patents

Patent Office Decisions

Answers to Correspondents

Canadian Patents

OFFICIAL LIST OF PATENTS GRANTED

Communications Received - March 8, 1873

Departments

  • Departments

    Correspondence - March 8, 1873

  • New Books and Publications - March 8, 1873

  • Notes and Queries - March 8, 1873

  • Business and Personal - March 8, 1873

  • Index of Inventions - March 8, 1873

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March 08, 1873

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