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Page 963 | Volume 3 | Chapter 44 | Storage Batteries

that the charging connections are properly made. If there be not sufficient resistance in the charging rheostat to reduce the current to the proper point, a water resistance should be used.

While a cell is being treated, when possible, the cover should be removed (if sealed, the compound can be loosened by using a hot putty knife).
Figs. 1,171 to 1,177. - National battery bolt connector and parts.
Figs. 1,171 to 1,177.—"National" battery bolt connector and parts. The connector is equipped with grease cups and antimonious lead washers.

Disconnecting Cells.—The best method of disconnecting cells assembled with pillar straps, for the purpose of replacing broken jars, cleaning or taking out of commission, is to use a five-eighth inch twist drill, in a carpenter's brace, boring down into the top of the pillar about one-quarter inch; then pull off the connector sleeve from the pillar. By following this method, an parts may be used again.

When cells are equipped with top straps, the straps should be cut with a sharp knife or chisel midway between the cells.

What is the Hawkins Electrical Guide?

When first published in 1914, these books were intended to explain the scientific principles of electricity (which at the time was a new and exciting technology) with "the aid of a very large number of illustrations, together with specific explanations, worded in concise and simple language".

What really makes this collection of books special today is the detailed documentation of most of the earliest inventions in electrical history including telegraphs, motors, switchboards, and high power distribution systems.

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About this project

Unfortunately, priceless material like this usually finds itself in the lost history of America. The mission of this project is to preserve that history and provide a simple yet powerful, direct means to each volume in digital form in which anyone can access while keeping as true to the original format as possible.

The project was started in July 2012 and is currently still in the developmental stages. It is projected that it could take 12+ months to get all of the material up. The good news is it's being added in order so users can begin reading while the latter material is being added. Until now, the only means of access to this material online were a few PDF, static html, and plain text versions from Google Books and Project Gutenberg.

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  • 10.29.2013 - Moved to new servers and uploaded Chapter 49: Alternators.
  • 3.1.2013 - Uploaded Chapter 47: Alternating Current Diagrams, and Chapter 48: The Power Factor.
  • 2.20.2013 - Uploaded Chapter 46: Alternating Currents
  • 12.29.2012 - Uploaded Chapters 44 and 45, check out storage battery principles and systems. This addition completes volume 3.
  • 12.23.2012 - Uploaded Chapters 42 and 43, check out sign flashers and lightning protection.
  • 12.19.2012 - Read mode has been streamlined for an enhanced user experience.
  • 9.15.2012 - NEW MOBILE SITE! - The Hawkins Electrical Guide is now available in true pocket form via our new mobile site. Check us out on your Android or iOS powered device when on the go!

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