SMALL ACCUMULATORS
How Made and Used
A Practical Handbook for Students and Young Electricians
EDITED BY PERCIVAL MARSHALL, A.I.M.E.
Contents of Chapters
I.—The Theory of the Accumulator.
II.—How to make a 4-Volt Pocket Accumulator.
III.—How to make a 32-Ampere-Hour Accumulator.
IV.—Types of Small Accumulators.
V.—How to Charge and Use Accumulators.
VI.—Applications of Small Accumulators, Electrical Novelties, etc. Useful Receipts. Glossary of Technical Terms.
80 pages, 40 illustrations, 12mo, cloth, 50c.
THE MAGNETO-TELEPHONE
ITS CONSTRUCTION,
Fitting Up and Adaptability to Every-Day Use
BY NORMAN HUGHES
CONTENTS OF CHAPTERS
Some electrical considerations: I.—Introductory. II.—Construction. III.—Lines, Indoor Lines. IV.—Signalling Apparatus. V.—Batteries. Open Circuit Batteries. Closed Circuit Batteries. VI.—Practical Operations. Circuit with Magneto Bells and Lightning Arresters. How to Test the Line. Push-Button Magneto Circuit. Two Stations with Battery Bells. VII.—Battery Telephone. Battery Telephone Circuit. Three Instruments on one Line. VIII.—General remarks. Index.
80 pages, 23 illustrations, 12mo, cloth, $1.00. In paper, 50c.
