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The American Electro Magnetic Telegraph / With the Reports of Congress, and a Description of All Telegraphs Known, Employing Electricity or Galvanism cover

The American Electro Magnetic Telegraph / With the Reports of Congress, and a Description of All Telegraphs Known, Employing Electricity or Galvanism

Chapter 1: THE AMERICAN ELECTRO MAGNETIC TELEGRAPH:
By Alfred Vail
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About This Book

The volume provides a practical, step-by-step exposition of early electromagnetic telegraphy, detailing the galvanic battery, wire, electromagnet, register, and various key and circuit arrangements along with telegraphic alphabets for multiple-pen systems. It presents experimental results and technical improvements, addresses conducting media and methods for spanning waterways without wires, and suggests applications such as rapid postal transmission and longitude determination. Appendices collect official reports, technical letters, specimen transmissions, and proposals for system tests, while illustrations and measurements support replication and evaluation. Overall it combines instrument descriptions, laboratory findings, and administrative documentation to guide construction, operation, and assessment of telegraphic lines.

The Project Gutenberg eBook of The American Electro Magnetic Telegraph

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Title: The American Electro Magnetic Telegraph

Author: Alfred Vail

Release date: February 29, 2020 [eBook #61533]
Most recently updated: October 17, 2024

Language: English

Credits: Produced by Sharon Joiner, Paul Marshall, Robert Shimmin
and the Online Distributed Proofreading Team at
http://www.pgdp.net

*** START OF THE PROJECT GUTENBERG EBOOK THE AMERICAN ELECTRO MAGNETIC TELEGRAPH ***

The cover image was created by the transcriber, and is placed in the public domain.

THE AMERICAN
ELECTRO MAGNETIC
TELEGRAPH:

WITH THE

REPORTS OF CONGRESS,

AND A DESCRIPTION

OF ALL TELEGRAPHS KNOWN,

EMPLOYING ELECTRICITY OR GALVANISM.

ILLUSTRATED BY EIGHTY-ONE WOOD ENGRAVINGS.

BY ALFRED VAIL,

ASSISTANT SUPERINTENDENT OF ELEC. MAG. TEL. FOR THE U. S.

CANST THOU SEND LIGHTNINGS, THAT THEY MAY GO, AND SAY UNTO THEE, HERE WE ARE?—JOB.

“The same principle which justified and demanded the transference of the mail on many chief routes, from the horse-drawn coach on common highways to steam-impelled vehicles on land and water, is equally potent to warrant the calling of the electro magnetic telegraph—that last and most wondrous birth of this wonder-teeming age—in aid of the post office, in discharge of its great function of rapidly transmitting correspondence and intelligence.” Rep. of Com. of Ways and Means of H. R., 1845.

PHILADELPHIA:
LEA & BLANCHARD.
1845.

ENTERED, according to Act of Congress, in the year 1845,
By ALFRED VAIL,

In the Clerk’s Office of the District Court of the United States,
in and for the District of Columbia.