An edition of The book of wireless
(1915)
The book of wireless
being a clear description of wireless telegraph sets and how to make and operate them, together with a simple explanation of how wireless works
by A. Frederick Collins
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Wireless TelegraphShowing 2 featured editions. View all 2 editions?
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Book Details
Published in
New York, USA, London, England
Table of Contents
CONTENTS
PART I
A SMALL WIRELESS OUTFIT
I. The Sender 1
II. The Receiver 12
III. A Cheap Aerial Wire 23
IV. Learning the Morse Code 34
V. How Wireless Works 42
PART II
A LONG DISTANCE WIRELESS SET
I. The Transmitter 54
II. The Receptor 81
III. A Good Aerial Wire System 110
IV. Tuning Transmitters and Receptors 134
PART III
INDUCTION COIL TRANSFORMER AND ELECTROLYTIC INTERRUPTOR
I. How to Make a Half-Inch Induction Coil 153
II. How to Make a One-Half Kilowatt Transformer 171
III. Useful Information 196
Dictionary of Words, Terms and Phrases 201
Index 215
LIST OF ILLUSTRATIONS
FIG. PAGE
41. — International Morse Code 35
42. — First aid to remembering the code 38
43. — Length of dash 39
44. — Space between two letters 39
45. — Space between two words 39
46. — Abbreviation in code 40
47. — A current of water flowing in a coil of pipe 43
48. — A current of electricity flowing in a coil of wire 43
49. — A bar of iron magnetized by current of coil 44
50. — Currents are set up in the secondary by magnetic lines 45
51. — How a rubber ball bounces 46
52. — Electric current in an aerial wire 48
53. — Electric waves around aerial 49
54. — Electric waves thrown off by aerial 49
55. — Magnet and diaphragm of telephone receiver 51
56. — A strong current pulls diaphragm to magnet 51
57. — When current stops diaphragm springs back 51
58. — The human ear showing ear-drum and auditory nerve 52
59. — Symbols used in wireless telegraphy 55
60. — Diagram of condenser, spark-gap and tuning coil 56
61. — Diagram of alternating current circuit 59
62. — Support for key 60
63. — Side view of key 61
64. — Top view of key 61
65. — Key complete 62
66. — Cross section view of water resistance 63
67. — Top view of water resistance 64
68. — Cross section of collar 65
69. — Cross section view of Leyden jar 66
70. — Spring of Leyden jar 67
71. — Leyden jar complete 67
72. — Top view of Leyden jar condenser 67
73. — Leyden jar condenser complete 68
74. — Top view of spark-gap 68
75. — Side view of spark-gap 69
76. — End view of spark-gap 69
77. — Adjusting screw support 70
78. — Adjusting handle 70
79. — Brass spark electrode 70
80. — Spark-gap complete 71
81-82. — Top and side view of tuning coil 72
83. — Top view of spring clip 73
84. — Side view of spring clip 73
85. — Tuning coil complete 74
86. — Plan view of instruments on table 75
87. — Wiring diagram of connections 75
88. — Transmitter complete and ready for sending 76
89. — Wood core of tuning coil 82
90. — Checks of coil 83
91. — End view of tuning coil 84
92. — Cross section of tuning coil 84
93. — Binding post with wood screw 85
94. — Slides for tuning coil 85
95. — Brass plate for contact spring 85
96. — Contact spring finished 85
97. — Contact spring on slider - 86
98. — Top view of tuning coil 87
99. — Receiving tuning coil complete 88
100. — Side view of crystal detector 8fr
101. — Top view of crystal detector 90"
102. — Brass holder of crystals 91
103. — Brass finger contact 91
104. — Phosphor-bronze contact spring (plate) 91
105. — Phosphor-bronze contact spring (bent) 91
106. — Brass collar 92
107. — Brass arm for adjusting screw 92
108. — Adjusting screw 92
109. - Brass spring 93
110. — Brass support rod 93
111. - Adjusting nut 93
112. — Crystal detector complete 94
113. — Tin foil laid up with mica 95
114. — Diagram showing how mica and tin foil are laid up 95
115. — Condenser with soldered ends 96
116. — Condenser complete 96
117. — Head telephone receivers 98
118. — Top view of water pontentiometer 99
119. — Side view of water potentiometer 100
120. — End view of water potentiometer 101
121. — Brass arm for water potentiometer 101
122. — Upper copper electrode 102
123. — Adjusting disk 102
124. — Lower copper electrode 102
125. — Water potentiometer complete 103
126. — Plan view of receptor table (aerial wires) 103
127. — Wiring diagram of reception with potentiometer 104
128. — Wiring diagram of receptor with potentiometer 105
129. — Receptor complete and ready for receiving 107
130. — Pole — on top of house 110
131. — The spreader for the ends 113
132. — The middle spreader 113
133. — Leading-in spreader 113
134. — Withe with two eyes 114
135. — Electrose ball insulator 114
136. — S hook 114
137. — S hook linking ball insulator with withe 114
138. — Brass spreader stop 115
139. — Thimble 115
140. — Shackle bolt 115
141. — Tackle block 115
142. — Joining the steel wire 116
143. — Insulated support for aerial wires 117
144. — Brass stops on aerial wire 118
145. — Leading-in insulator 119
146. — Leading-in insulator through window 120
147-148. — Top and side views of lighting switch 120
149. — Angle contact plate 121
150. — Top view of anchor gap 121
151. — Anchor gap complete 122
152. — Base and contact supports for aerial switch 123
153. — Contact lever for aerial switch 124
154. — Side view of aerial switch 125
155. — Aerial switch complete 126
156. The metal ground 127
157. — Plan view of transmitter, receptor and aerial switch connected together 130
158. — Wiring diagram of transmitter, receptor and aerial switch 132
159. — A pair of tuned pendulums 135
160. — A pair of tuned Leyden jars 136
161. — Non-tuned open oscillation circuit 139
162. — Strongly damped oscillations 140
163. — Tuned closed oscillation circuit 140
164. — Feebly damped oscillations 141
165. — Coupled open and closed oscillation circuits for transmitting 142
166. — Coupled open and closed oscillation circuits for receptor 143
167. — Intermittent direct current produced from electric oscillations 145
168. — Simple hot-wire ammeter — top view 147
169. — Simple hot-wire ammeter complete 148
170. — Cheap hot-wire ammeter 148
171. — Diagram of wave meter and sending tuning coil 149
172. — Fixed and movable plates of variable condenser 150
173. — The condenser complete 150
174. — The wave meter complete 151
175. — Top view of base 154
176. — Base turned upside down. Showing inside 154
177. — Base block 155
178. — Core of coil 155
179. — Cross section of induction coil 156
180. — Cheeks of induction coil 15f
181. — Cross section of winding machine 159
182. — End view of winding machine 160
183. — Testing wire of secondary coil 161
184. — Top view of induction co^L 162
185. — Parts of interruptor 164
186. — Guide for laying up condenser 166
187. — Wiring diagram for induction coil 167
188. — Magnetic lines of force in coil 170
189. — Core of transformer 171
190. — How staggered joints are made 173
191. — How transformer core is insulated 174
192. — Wood core for winding primary coil 174
193. — Cheek with hole for leg of core 175
194. — Top view of transformer in cross section 176
195. — One of disks or pies for secondary 177
196. — Side view of winding machine 178
197. — End view of winding machine 179
198. — Cheek for winding coil 180
199. — Wood core on which pies are wound 181
200. — Iron spindle for winding machine 182
201. — Taping up pie 184
202. — Insulation and pies of secondary 185
203. — Laying up secondary coil 186
204. — How pies are connected together 186
205. — One-half-kilowatt transformer complete 187
206. — Side view of electrolytic interruptor 189
207. — Top view of electrolytic interruptor 190
208. — Lead electrode 191
209. — Glass or porcelain tube 192
210. — Copper rod electrode and lead handle 193
211. — Adjusting blocks 194
212. — Electrolytic interruptor in perspective 194
213. — Brown and Sharpe wire gauge 201
214. — Vertical aerial 203
215. — Horizontal F (inverted L) aerial 203
216. — Horizontal T aerial 204
217. — Fan aerial 204
218. — Umbrella aerial 204
219: — A simple crystal detector 205
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History
- Created December 13, 2015
- 4 revisions
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| September 12, 2020 | Edited by MARC Bot | import existing book |
| July 14, 2020 | Edited by CoverBot | Added new cover |
| December 13, 2015 | Edited by ww2archive | added edition |
| December 13, 2015 | Created by ww2archive | Added new book. |