| East Windham | New York |
COPYRIGHT, 1898,
BY THOMAS M. ST. JOHN
How Two Boys Made Their Own Electrical Apparatus.
TABLE OF CONTENTS.
| Chapter. | Page. | |
| [I.] | Cells and Batteries, | 5 |
| [II.] | Battery Fluids and Solutions, | 15 |
| [III.] | Miscellaneous Apparatus and Methods of Construction, | 20 |
| [IV.] | Switches and Cut-Outs, | 28 |
| [V.] | Binding-Posts and Connectors, | 32 |
| [VI.] | Permanent Magnets, | 37 |
| [VII.] | Magnetic Needles and Compasses, | 40 |
| [VIII.] | Yokes and Armatures, | 45 |
| [IX.] | Electro-Magnets, | 51 |
| [X.] | Wire-Winding Apparatus, | 60 |
| [XI.] | Induction Coils and Their Attachments, | 64 |
| [XII.] | Contact Breakers and Current Interrupters, | 75 |
| [XIII.] | Current Detectors and Galvanometers, | 78 |
| [XIV.] | Telegraph Keys and Sounders, | 92 |
| [XV.] | Electric Bells and Buzzers, | 104 |
| [XVI.] | Commutators and Current Reversers, | 110 |
| [XVII.] | Resistance Coils, | 114 |
| [XVIII.] | Apparatus for Static Electricity, | 117 |
| [XIX.] | Electric Motors, | 122 |
| [XX.] | Odds and Ends, | 133 |
| [XXI.] | Tools and Materials, | 137–141 |
A WORD TO BOYS.
The author is well aware that the average boy has but few tools, and he has kept this fact constantly in mind. It is a very easy matter for a skilled mechanic to make, with proper tools, very fine-looking pieces of apparatus. It is not easy to make good apparatus with few tools and a limited amount of skill, unless you follow simple methods.