GrandDads Wonderfull Book of Electricity. 

A Battery Rheostat. GWBOE pg 191 
A Bell Ringing Mail Box. GWBOE pg 376
A Carbon Electric Water Heater. 370
A Cheap Wet Battery Cell. GWBOE pg 420
A Compact Galvanometer. GWBOE pg 340
A Concealed Loop Aerial. GWBOE pg 402
A Controller and Reverse for a Battery Motor. GWBOE pg 186 
A Cylinder Reversing Switch. GWBOE pg 368
A D'Arsonval Galvanometer. GWBOE pg 333
A Desk Cabinet fo Radio Apparatus. GWBOE pg 403
A Disk Armature Motor. GWBOE pg 281 
A Double Contact Vibrator. GWBOE pg 342
A Fifty Cent Electric Stove. GWBOE pg 365
A Floating Electromagnet. GWBOE pg 217 
A Gas Cannon. GWBOE pg 226 
A High Tone Radio Buzzer. GWBOE pg 382
A Home Made Daniell Cell. GWBOE pg 233 
A Home Made Electric Plug. GWBOE pg 261 
A Homemade Ammeter. GWBOE pg 364
A Homemade Trouble Lamp. GWBOE pg 371
A Homemade Wet Battery. GWBOE pg. 282 
A Low Voltage Arc Lamp. GWBOE pg 410
A Medical Coil and How to Make It. GWBOE pg 447
A Musical Doorbell. GWBOE pg 279 
A Novel Electric Time Alarm. GWBOE pg 262 
A Novel Use for an Electric Bell. GWBOE pg 452
A Pocket Direct Current Voltmeter. GWBOE pg 320
A Pocket Voltameter. GWBOE pg 238 
A Polarity Indicator. GWBOE pg 278 
A Printing Telegraph Instrument. GWBOE pg 408
A Quickly Made Toy Electric Motor. GWBOE pg 364
A Recording Annunciator Target. GWBOE pg 368
A Self Closing Telegraph Key. GWBOE pg 411
A Set of Electric Chimes. GWBOE pg 372
A Short Distance Wireless Telegraph. GWBOE pg 199 
A Simple Battery Rheostat. GWBOE pg 263 
A Simple Diming Switch. GWBOE pg 389
A Simple Electrical Resistance Coil. GWBOE pg 388
A Simple Motor Controller. GWBOE pg 362
A Simple Polarity Indicator. GWBOE pg 376
A Simple Radio Transmitting Set. GWBOE pg 382
A Simple Wireless Detector. GWBOE pg 377
A Small Electrically Heated Steam Boiler. GWBOE pg 384
A Small Home Made Electric Electric Motor. GWBOE pg 229 
A Small Hydroelectric Power Plant. GWBOE pg 274 
A Small Rheostat for Experiments and Testing. GWBOE pg 346
A Small Shocking Machine. GWBOE pg 301
A Small Voltmeter and How to Make It. GWBOE pg 438
A Switch for Producing Dissolving Views. GWBOE pg 401
A Toy Tractor Built with Dry Cell and Motor. GWBOE pg 338
A Wimshurst Machine - How to Make and Use It. GWBOE pg 433
A Wire Splicing Tool. GWBOE pg 399
Alarm Prevents Overflowing of Ice Box. GWBOE pg 417
Alarm, Alarm, Burglar, Circuit, GWBOE pg 390
Alarm, Burglar, GWBOE pg 250
Alarm, Door Bell and, GWBOE pg 206
Alarm, Fire, GWBOE pg 261
Alarm, GWBOE pg 197
Alarm, GWBOE pg 331
Alarm, Overflow, GWBOE pg 417
Alarm, Rain, GWBOE pg 344
Alarm, Temperature, GWBOE pg 289
Alarm, Time, GWBOE pg 262
Alternating Current, Seeing, GWBOE pg 374
Amateur Electrician, GWBOE pg 422
Ammeter, GWBOE pg 183 226 364 393
An Alarm for a Sleepwalker. GWBOE pg 271 
An Apparatus for Transmitting Pictures by Electricity. GWBOE pg 432
An Automatic Lock. GWBOE pg 202 
An Automatic Window Closer. GWBOE pg 366
An Automatic Window Closer. GWBOE pg 404
An electric Anemometer. GWBOE pg 303
An Electric Chime Clock. GWBOE pg 275 
An Electric Display for a Show Window. GWBOE pg 264 
An Electric Engine. GWBOE pg 236 
An Electric Fountain. GWBOE pg 324
An Electric Gas Lighter. GWBOE pg 310
An Electric Gun. GWBOE pg 457
An Electric Horn. GWBOE pg 330
An Electric Incubator. GWBOE pg. 288
An Electric Insect Killer. GWBOE pg 378
An Electric Lure for Fish. GWBOE pg 341
An Electric Post Card Projector. GWBOE pg 224 
An Electric Shaving Mug. GWBOE pg 314
An Electric Stirring Machine. GWBOE pg 266 
An Electric Time Light. GWBOE pg 300
An Electric Water Heater. GWBOE pg 265 
An Electric Water Heater. GWBOE pg 271 
An Electrical Dance. GWBOE pg 371
An Electrical Picture Transmitter. GWBOE pg. 128 
An Electrically Ignited Flash Light for Making Photographs. GWBOE pg 269 
An Electrically Operated Camera Shutter. GWBOE pg 268 
An Illuminated Indicating Target Box. GWBOE pg 345
An Ingenious Electric Lock for a Sliding Door. GWBOE pg 194 
An Interesting Electrical Experiment. GWBOE pg 251 
An Oscillation Transformer. GWBOE pg 386
Anaestesis, Electric, GWBOE pg 264
Anemometer, GWBOE pg 303
Annunciator, GWBOE pg 59, 177, 256
Annunciator, Recording, GWBOE pg 368
Another Electric Lamp Experiment. GWBOE pg 212 
Another Electric Lock. GWBOE pg 203 
Another Electric Motor. GWBOE pg 254 
Another Way to Renew Dry Batteries. GWBOE pg 251 
Arc Furnace, GWBOE pg 90, 174 268, 307
Arc Lamp, GWBOE pg 211
Arc, light, GWBOE pg 203 366
Arc, Low Voltage, GWBOE pg 410
Arc, Searchlight, GWBOE pg 106
Arial, GWBOE pg 381
Arial, Loop, GWBOE pg 402
Arial, Switch for, GWBOE pg 376
Arial, when grounded, GWBOE pg 377
Armature, Rack, GWBOE pg 56
Auto Motor Powers Hoist, GWBOE pg 46
Auto Motor Powers this Utility Hoist. GWBOE pg 46 
Auto Transformer Design and Construction. GWBOE pg 142 
Automatic Electric Heat Regulator. GWBOE pg 242 
Automatic Electric Light on Talking Machine Cabinet. GWBOE pg 344
Automatic Flash Light Snap Chicken Coop Marauder. 343
Automobile Direction Indicator. GWBOE pg 417
Batteries, Bichromate, Carbons, GWBOE pg 444
Batteries, Bichromate, Renewing Dry, GWBOE pg 250, 251, 255, 313, 338
Batteries, Bichromate, Repairing, GWBOE pg 391
Batteries, Bichromate, to give voltage, GWBOE pg 196
Battery Buzzer Converted into a Telegraph Sounder. GWBOE pg 342
Battery Switch. GWBOE pg 198 
Battery, Auto as B-Battery, GWBOE pg 386
Battery, Bichromate, GWBOE pg 424
Battery, Dry Cell, GWBOE pg 218 437
Battery, Gravity, Failure, GWBOE pg 206
Battery, Grenet, GWBOE pg 190
Battery, Non-polarizing, GWBOE pg 217
Battery, Small Storage, GWBOE pg 207
Battery, Switch, GWBOE pg 198
Battery, Terminals, GWBOE pg 221
Battery, Thermoelectric, GWBOE pg 179 214
Battery, Wet, GWBOE pg 282
Battery, Zincs, To Use, GWBOE pg 193
Bell Gives Two District Signals. GWBOE pg 393
Bell, Call, Connecting, GWBOE pg 297
Bell, Continuously Ringing, GWBOE pg 312
Bell, Door, Puts Light On, GWBOE pg 412
Bell, GWBOE pg 450
Bell, Mail Box Ringer, GWBOE pg 376
Bell, Musical Door, GWBOE pg 279
Bell, Novel Use For, GWBOE pg 452
Bell, Return Call, One Wire, GWBOE pg 198
Bell, Ring with Gas Jet, GWBOE pg 255
Bell, Singals, GWBOE pg 393
Block for Multiple Radiophones. GWBOE pg 381
Blue Light Experiment, GWBOE pg 118
Build a Fan with No Moving Parts. GWBOE pg 57 
Build Your Own AC Relays. GWBOE pg 153. 
Build Your Own DC Relays. GWBOE pg 150. 
Build Your Own Thermal Relays. GWBOE pg 158. 
Building a Power Transformer. GWBOE pg 52. 
Burglar Alarm Circuit. GWBOE pg 390
Buzzer, GWBOE pg 419
Cage Type Aerial Highly Recommended to Amateurs. GWBOE pg 381
Callers Approach Alarm. GWBOE pg 193 
Camera Shutter, GWBOE pg 268
Candle Sconce, GWBOE pg 421
Cannon, Gas, GWBOE pg 226
Cannon, Toy, Discharged, GWBOE pg 179
Carbon Lamp "Kick Back" Preventer. GWBOE pg 420
Card Game, Robot, GWBOE pg 129
Casting Terminal Nuts for Storage Batteries. GWBOE pg 409
Casting Terminal Nuts, GWBOE pg 409
Cats, Ridding yard of, GWBOE pg 255
Cell, Bunsen, GWBOE pg 228
Cell, Cheap Wet Battery, GWBOE pg 420
Cell, Daniell, GWBOE pg 233 440
Cell, Dry, GWBOE pg 337
Cell, Leclanche, GWBOE pg 457
Cellar Door Operates Light Switch. GWBOE pg 412
Cells, Dry, Testing, GWBOE pg 368
Cells, Prolonging Life, GWBOE pg 414
Chimes, GWBOE pg 372
Cigar Box Multi Tester. GWBOE pg. 73 
Cigar Box Tesla Coil. GWBOE pg 001 
Circuit Breaker for Inductions Coils. GWBOE pg 198 
Circuit Breaker, GWBOE pg 198
Clock, Chime, GWBOE pg 275
Clock, Homemade, GWBOE pg 233
Clock, Striker, GWBOE pg 339
Coherer, Wireless, GWBOE pg 188
Coil Demagnetizes Watches and Tools Quickly. GWBOE pg 70 
Coil, Jump Start, GWBOE pg 20
Coil, Medical Induction, GWBOE pg 132
Coil, Reisistance, GWBOE pg 388
Coil, Tuning, Rotary, GWBOE pg 307
Coil, Winding, GWBOE pg, 396, 418, 420
Combination Telegraph and Telephone Line. GWBOE pg 239 
Combined Door Bell and Electric Alarm. GWBOE pg 206 
Condenser, Bridging, GWBOE pg 389
Condensers, Making, GWBOE pg 405
Condensers, Variable, GWBOE pg 370
Connecting up Batteries to Give Any Voltage. GWBOE pg 196. 
Construction of a Small Bell Ringing Transformer. GWBOE pg 290
Controller for a Small Motor. GWBOE pg 176 
Converting Electric Clocks to Time Switches. GWBOE pg 79 
Crystal, Renewing, GWBOE pg 378
Current Reverser, GWBOE pg 202
Current Reversing switch, GWBOE pg 303
Cycle Lamp, GWBOE pg 428
DC Motor Generator Set. GWBOE pg 97 
Dead End Switch for Inductances. GWBOE pg 379
Demagnetising Coil, GWBOE pg 70
Demagnetizing a Watch. GWBOE pg 221 
Direct Connected Reverse for Small Motors. GWBOE pg 180 
Direction Indicator, GWBOE pg 417
Dogs, Kept Away, GWBOE pg 197 201
Door Opener Light Switch, GWBOE pg 412
Door Opener, GWBOE pg 189
Easily Made Wireless Coherer. GWBOE pg 188 
Easy Experiments with Electric Light Circuit. GWBOE pg 180 
Easy Method of Electroplating. GWBOE pg 193 
Efficiency, to determine, GWBOE pg 373
Electric Alarm that Rings a Bell and Turns on a Light. GWBOE pg 241. 
Electric Arc Furnace. GWBOE pg 90 
Electric Blue Light Experiment. GWBOE pg. 118 
Electric Candle Sconce. GWBOE pg 421
Electric clock oiling, GWBOE pg 83
Electric Clocks, Fixing, GWBOE pg 83
Electric Door Opener. GWBOE pg 189 
Electric engine, GWBOE pg 236
Electric experiment, GWBOE pg 118, 251
Electric Fan Repair. GWBOE pg 69 
Electric fan, no moving parts, GWBOE pg 57
Electric fans, servicing, GWBOE pg 65
Electric Fence Plans. GWBOE pg 116 
Electric fence, GWBOE pg 116
Electric fishing signal, GWBOE pg 265
Electric Gun, GWBOE pg 457
Electric Horn, GWBOE pg 228, 330
Electric Incubator, GWBOE pg 288
Electric Iron Repair, GWBOE pg 61
Electric Iron Repair. GWBOE pg 61 
Electric Light Experiment, GWBOE pg 180
Electric Light Turned On and Off from Different Places. GWBOE pg 228 
Electric Lock 194, GWBOE pg, 203
Electric Locomotive, GWBOE pg 219, 347
Electric Massage, GWBOE pg 96
Electric Rat Exterminator. GWBOE pg 249 
Electric Shaving Mug, GWBOE pg 314
Electric Spotlight for Night Hunting. GWBOE pg 400
Electric Spray Gun, GWBOE pg 56
Electric Stove, GWBOE pg 234
Electric Switch for Exposing Photographic Printing Papers. GWBOE pg 267 
Electric Temperature Indicators. Thermocouple, Pyrometers, etc. GWBOE pg 41. 
Electric Toaster, GWBOE pg 181
Electric Torch, GWBOE pg 51
Electric Torch. GWBOE pg 51 
Electric Water Heater, GWBOE pg 265
Electric Window Display, GWBOE pg 264
Electrical Contact, Rotating, GWBOE pg 37
Electrical Contacts, GWBOE pg 17
Electrical Dancer, GWBOE pg 371
Electrical Device Transmits Striking of Clock. GWBOE pg 339
Electrical Projects, GWBOE pg 7
Electrical Tester. GWBOE pg 105. 
Electrically Operated Indicator for a Wind Vane. GWBOE pg 246 
Electricians Test Light Built from Stock Parts. GWBOE pg 106 
Electricity, Two Types, GWBOE pg 109
Electricity, Writing With, GWBOE pg 82
Electrify Your Ice Cream Freezer. GWBOE pg 85 
Electromagnet, GWBOE pg Floating 217
Electromagnetism, GWBOE pg 343
Electromagnets, Make, GWBOE pg 415
Electroplating without a Tank. GWBOE pg 269 
Electroplating, Easy, GWBOE pg 193
Electroplating, without tank, GWBOE pg 269
Electroscope, Make, GWBOE pg 199
Electrotype Stamp, GWBOE pg 336
Electrotyping Course, GWBOE pg 440
Electrotyping for Amateurs. GWBOE pg 440
Eliminating Spark on Bell Contacts. GWBOE pg 399
Entertainer for Baby, GWBOE pg 338
Everyday Science. The 2 Types of Electricity. GWBOE pg 109 
Experimental Ray Tracer. GWBOE pg 133 
Experimenting with a "Souped Up" Tesla Coil. GWBOE pg 145 
Extension Cords, GWBOE pg 167
Extension Cords. GWBOE pg 167 
Finding the Horsepower of Small Motors. GWBOE pg 229 
Fish Lure, GWBOE pg 341
Fishing for Distant Earthquakes with a Homemade Seismograph. GWBOE pg 112 
Fitting Up Carbons for Bi-chromate Batteries. GWBOE pg 444
Flashing Neon Sign for your House Numbers. GWBOE pg 165 
Forming Electrolytic Rectifier Plates. GWBOE pg 389
Fountain, GWBOE pg 324
Four Way Switch Made from Old Automobile Times. GWBOE pg 392
Furnace Regulator, GWBOE pg 251
Fuse, Storage, GWBOE pg 89
Galvanometer, Cheap, GWBOE pg 445
Galvanometer, Compact, GWBOE pg 340
Galvanometer, D'Arsonoval, GWBOE pg 333
Galvanometer, Simple, GWBOE pg 316 461
Galvanometer, Tangent, GWBOE pg 215
Galvanometer, Watch case, GWBOE pg 418
Galvanoscope, GWBOE pg 187
Gas Lighter, GWBOE pg 310
Geiger Counter, GWBOE pg 131
Generators, GWBOE pg 125
Glass Plates, Piercing, GWBOE pg 260
Gyroscope, Electric. GWBOE pg 102
Hair Dryer. GWBOE pg 387
Handy Electric Alarm. GWBOE pg 197 
Handy Spools for Coil Winding. GWBOE pg 396
Heat and Electricity. GWBOE pg 126
Heat and Expansion. GWBOE pg 209
Heat and Expansion. GWBOE pg 209 
Heat Regulator. GWBOE pg 242
Heater, Make. GWBOE pg 328
Heater, Water. GWBOE pg 271, 370
High Speed Key. GWBOE pg 391
Home Made Arc Lamp. GWBOE pg 211 
Home Made Battery Voltmeter. GWBOE pg 217 
Home Made Electric Clock. GWBOE pg 233 
Home Made Shocking Machine. GWBOE pg 214 
Home Made Telephone Transmitter. GWBOE pg 254 
Homemade Annunciator. GWBOE pg 177 
Homemade Annunciator. GWBOE pg 59. 
Homemade Arc Light. GWBOE pg 366
Homemade Arc Light. GWBOE pg 203 
Homemade Electric Bed Warmer. GWBOE pg 242 
Homemade Electric Locomotive Model and Track System. GWBOE pg 347
Homemade Grenet Battery. GWBOE pg 190 
Homemade Spray Gun. GWBOE pg 56 
Homemade Telegraph Key. GWBOE pg 175 
Homemade Telegraph Key. GWBOE pg 237 
Homemade Telegraph Sounder. GWBOE pg 266 
Homemade Telephone Receiver. GWBOE pg 248 
Horsepower, Finding. GWBOE pg 229
How Heat and Electricity Affect Each Other. GWBOE pg. 126 
How to Build a Simple Electric Motor. GWBOE pg 298
How to Build a Wind Vane with an Electric Indicator. GWBOE pg 230 
How to Build a Wind Vane with an Electric Indictor. GWBOE pg 271 
How to Build an Adjustable Bridging Condenser. GWBOE pg 389
How to Build an Electronic Organ. GWBOE pg 107 
How to Build Small Electromagnets. GWBOE pg 415
How to Care for the Household Utility Motor. GWBOE pg 22. 
How to Construct a Simple Galvanometer. GWBOE pg 316
How to Construct an Agglomerate Leclanche Cell. GWBOE pg 457
How to Construct an Annunciator. GWBOE pg 256 
How to Discharge a Toy Cannon by Electricity. GWBOE pg 179 
How to Fit up a Small Intermittent Electric Light. GWBOE pg 429
How to Give an Electric Shock While Shaking Hands. GWBOE pg 212 
How to Make a 110 Volt Transformer. GWBOE pg 263 
How to Make a Bunsen Cell. GWBOE pg 228 
How to Make a Cheap Reliable Galvanometer with Bridge and Scale. GWBOE pg 445
How to Make a Continuously Ringing Bell. GWBOE pg 312
How to Make a Dry Battery Cell. GWBOE pg 218 
How to Make a Dry Battery for a Portable Electric Lamp. GWBOE pg 437
How to Make a Dry Cell. GWBOE pg 337
How to Make a Fire and Burglar Alarm. GWBOE pg 331
How to Make a Galvanoscope. GWBOE pg 187 
How to Make a Good Mineral Detector. GWBOE pg 398
How to Make a Gyroscope II. GWBOE pg 102 
How to Make a Gyroscope III. GWBOE pg 103 
How to Make a High Speed Key. GWBOE pg 391
How to Make a Hygrometer. GWBOE pg 186 
How to Make a Jump Spark Coil. GWBOE pg 204 
How to Make a Lead Pencil Rheostat. GWBOE pg 215 
How to Make a Lightning Arrester. GWBOE pg 208 
How to Make a Miniature Electric Locomotive. GWBOE pg 219 
How to Make a Non-Polarizing Battery. GWBOE pg 217 
How to Make a Simple Ammeter. GWBOE pg 393
How to Make a Simple Burglar Alarm. GWBOE pg 250 
How to Make a Simple Sensitive Galvanometer. GWBOE pg 461
How to Make a Simple Telephone. GWBOE pg 431
How to Make a Simple Water Rheostat. GWBOE pg 182 
How to Make a Simple Water Rheostat. GWBOE pg 60. 
How to Make a Simple Wireless telegraph. GWBOE pg 207 
How to Make a Small Electric Furnace. GWBOE pg 174. 
How to Make a Small Electric Furnace. GWBOE pg 268 
How to Make a Small Electric Motor. GWBOE pg 243 
How to make a Small Medical Induction Coil. GWBOE pg 132 
How to Make a Small Motor. GWBOE pg 260 
How to Make a Small Rheostat. GWBOE pg 318
How to Make a Small Searchlight. GWBOE pg 240 
How to Make a Small Series Motor. GWBOE pg 325
How to Make a Small Silver Plating Outfit. GWBOE pg 248 
How to Make a Small Single Phase Induction Motor. GWBOE pg 209 
How to Make a Small Storage Battery. GWBOE pg 207 
How to Make a Static Machine. GWBOE pg 221 
How to make a Tangent Galvanometer. GWBOE pg 215 
How to make a Telegraph Instrument and Buzzer. GWBOE pg 239 
How to Make a Telegraph Key and Sounder. GWBOE pg 187 
How to Make a Thermo Battery. GWBOE pg 179 
How to Make a Thermoelectric Battery. GWBOE pg 214 
How to Make a Very Simple Electro-Motor. GWBOE pg 449
How to Make a Water Rheostat. GWBOE pg 184 
How to Make a Wehnelt Electrolytic Interrupter. GWBOE pg 452
How to Make a Wireless Telephone. GWBOE pg 261 
How to Make an Ammeter. GWBOE pg 183 
How to Make an Ammeter. GWBOE pg 226 
How to Make an Efficient Wireless Telegraph. GWBOE pg 191 
How to Make an Electric Bell. GWBOE pg 450
How to Make an Electric Cycle Lamp. GWBOE pg 428
How to Make an Electric Fire Alarm. GWBOE pg 261 
How to Make an Electric Fishing Signal. GWBOE pg 265 
How to Make an Electric Furnace Regulator. GWBOE pg 251 
How to Make an Electric Furnace. GWBOE pg 307
How to Make an Electric Gyroscope. GWBOE pg 102 
How to Make an Electric Hair Dryer. GWBOE pg 387
How to Make an Electric Heater. GWBOE pg 328
How to Make an Electric Lamp Flasher. GWBOE pg 305
How to Make an Electric Pendant Switch. GWBOE pg 238 
How to Make an Electric Stove. GWBOE pg 234 
How to Make an Electric Toaster. GWBOE pg 181 
How to Make an Electric War Map. GWBOE pg 457
How to Make an Electrical Horn. GWBOE pg 228 
How to Make an Electrolytic Interrupter. GWBOE pg 270 
How to Make an Electrolytic Rectifier. GWBOE pg 225 
How to Make an Electroscope. GWBOE pg 199. 
How to Make an Electrotype Stamp. GWBOE pg 338
How to Make an Induction Coil. GWBOE pg 213 
How to Make an Interrupter. GWBOE pg 185 
How to Make Incandescent Electric Lamps for 1/2d. each. GWBOE pg 454
How to Make Miniature Electric Lamp Sockets. GWBOE pg 234 
How to Paraffin Wire. GWBOE pg 219 
How to Receive Wireless Telegraph. GWBOE pg 196 
How to Rid Your Yard of Cats. GWBOE pg 255 
How to Transmit Phonograph Music to a Distance. GWBOE pg 202 
How to Wind Wire on Electrical Apparatus. GWBOE pg 341
Hydrogen Generator. GWBOE pg 178
Ice Cream Freeze, Electrify. GWBOE pg 85
Improved Methods of Making Induction Coils. GWBOE pg 459
Improved Telegraph Blinker. GWBOE pg 413
Incandescent Lamps, Make. GWBOE pg 454
Induction Coil for Experimenters. GWBOE pg 30 
Induction Coil Replaced by Vacuum Tubes in Cigar Box Tesla Coil. GWBOE pg 003
Induction Coil. GWBOE pg 30
Induction Coil. Lighting. GWBOE pg 204
Induction Coil. Make, GWBOE pg 459
Induction Coil. Mercury. GWBOE pg 223
Induction Coil. Principle. GWBOE pg 124
Inexpensive Table Lamp Made of Electrical fixture Parts. GWBOE pg 341
Insect Killer. GWBOE pg 378
Insulating Cleats. GWBOE pg 246
Insulation. Removing. GWBOE pg 396
Intermittent Light. GWBOE pg 429
Intermittent Lighting. GWBOE pg 408
Interrupter, Electrolytic. GWBOE pg 270
Kick-Back Preventer. GWBOE pg 420
Lacquer Coating Protects Insulation on Car Ignition Wires. GWBOE pg 166
Lacquer Coating Wires. GWBOE pg 166
Lamp. Experiment. GWBOE pg 212
Lamp. Flasher. GWBOE pg 305
Lamp. GWBOE pg 341
Lamp. Trouble. GWBOE pg 371
Lamps, miniature. GWBOE pg 262
Leads, flexible. GWBOE pg 92
Light, Automatic. GWBOE pg 344
Light, Turn On, Off. GWBOE pg 228
Lighting an Incandescent Lamp with an Induction Coil. GWBOE pg 204 
Lighting Plant for Farm or Camp. GWBOE pg. 136 
Lighting, Miniature. GWBOE pg 199
Lighting, Plant. GWBOE pg 136
Lightning Arrester. GWBOE pg 208
Lightning Switch for Wireless Aerials. GWBOE pg 376
Lights On and Off. GWBOE pg 237
Lock, Automatic. GWBOE pg 202
Lubricating an Electric Clock. GWBOE pg 64 
Magnetized Checker Men. GWBOE pg 419
Magnetized Checkers. GWBOE pg 419
Magnetos, Oscillating. GWBOE pg 20
Magnets from nails. GWBOE pg 6
Magnets, Pepping Up. GWBOE pg 28
Magnets, Permanent. GWBOE pg 399
Make Artificial Lightning with Giant Oudin Coil. GWBOE pg 171 
Making a Motor Reversible. GWBOE pg 56 
Making Good Contacts. GWBOE pg 017 
Making High Frequency Oudin and Tesla Coils. 397
Making Molded High-Tension Condensers. GWBOE pg 405
Making Permanent Magnets by Use of Alternating Current. GWBOE pg 399
Making Your Own Broadcast Microphone. GWBOE pg 130 
Measuring Resistance with a Lead Pencil. GWBOE pg 361
Mercury Make and Break Connections for Induction Coils. GWBOE pg 223 
Microphone, Broadcast. GWBOE pg 130
Microphones and How to Make Them. GWBOE pg 426
Microphones, Make. GWBOE pg 426
Mineral Detector. GWBOE pg 398
Miniature Electric Lamps. GWBOE pg 262 
Miniature Electric Lighting. GWBOE pg 199 
Miniature Push Buttons. GWBOE pg 363
Mixers, Electric, Servicing. GWBOE pg 93
Modern Electrical Projects. GWBOE pg 007 
Motor Driven Entertainer for the Baby. GWBOE pg 338
Motor Made from Electric Bell. GWBOE pg 413
Motor. Battery, Reverse For. GWBOE pg 186
Motor. Care of. GWBOE pg 22
Motor. Controller. GWBOE pg 176. 362
Motor. D. C. Armature. GWBOE pg 281
Motor. D. C. GWBOE pg 125
Motor. From Bell. GWBOE pg 413
Motor. Generator. D. C. GWBOE pg 97
Motor. GWBOE pg 254
Motor. Induction. GWBOE pg 209
Motor. Inexpensive. GWBOE pg 437
Motor. Mounting For. GWBOE pg 384
Motor. Novel. GWBOE pg 253
Motor. Reversible. GWBOE pg 56
Motor. Simple. GWBOE pg 229, 448, 449
Motor. Small, Reverse for. GWBOE pg 180. 201
Motor. Small, Series. GWBOE pg 325
Motor. Small. GWBOE pg 229, 243, 260
Motor. Split Phase, Reversing. GWBOE pg 104
Motor. Steel Ball. GWBOE pg 406
Motor. Toy. GWBOE pg 364
Motorboat Illumination. GWBOE pg 395
Motorboat Illumination. GWBOE pg 395
Multi Voltage Transformer for the Home Workshop. GWBOE pg 47 
My Wimshurt Machine, and How I Made It. GWBOE pg 458
Nails Form Magnets of Midget Motor. GWBOE pg 008 
Neat Tips on Wires. GWBOE pg 378
Neon Sign, Flashing. GWBOE pg 165
Novel Electric Motor. GWBOE pg 253 
Novel Radio Rheostat Mounting. GWBOE pg 384
Number feet of wire in lb. GWBOE pg 404
Number of Feet in Pound of Insulated Wire. GWBOE pg 404
One Wire Telegraph Line. GWBOE pg 189 
Onlaying Script on a Trophy Cup. GWBOE pg 346
Organ, Electric. GWBOE pg 107
Oscillating Type Magnetos. GWBOE pg 020 
Oudin and Tesla Coil. GWBOE pg 397
Oudin Coil. GWBOE pg 171
Pepping up "Tired" Magnets. GWBOE pg 28 
Phone Receives Telegraph. GWBOE pg 196
Phone, Wireless. GWBOE pg 178
Photographing Electric Sparks. GWBOE pg 375
Photographing Sparks. GWBOE pg 375
Piano, Electric. GWBOE pg 232
Picture Transmitter. GWBOE pg 128
Piecing Glass Plates with a Spark Coil. GWBOE pg 260 
Plane for Display. GWBOE pg 300
Plug, Handmade. GWBOE pg 261
Pocket Geiger Counter. GWBOE pg 131 
Polarity Indicator. GWBOE pg 278. 376
Polarity Testing. GWBOE pg 372
Post Card Projector. GWBOE pg 224
Potentiometer. GWBOE pg 71
Potentiometer. GWBOE pg 71 
Powder, to Explode. GWBOE pg 177
Power Plant. GWBOE pg 274
Producing Intermittent Lightning. GWBOE pg 408
Prolonging Life of Dry Cells. GWBOE pg 414
Push Button Opener. GWBOE pg 411
Push Button Opens Furnace Draft. GWBOE pg 411
Push Buttons. GWBOE pg 363
Radio Buzzer. GWBOE pg 382
Radio Cabinet. GWBOE pg 403
Radio Grounds. GWBOE pg 394
Radio Phone Blocks. GWBOE pg 381
Radio Transmitter. GWBOE pg 382
Rain Alarm with Drop of Water Contact. GWBOE pg 344
Rat Exterminator. GWBOE pg 249
Ray Tracer, Experimental. GWBOE pg 133
Rectifier, Current. GWBOE pg 162
Rectifier, Electrolytic, Plates. GWBOE pg 382
Rectifier, Electrolytic. GWBOE pg 225
Rectifier, Lead Pencil. GWBOE pg 215
Rectifier, Small. GWBOE pg 318
Rectifier, Water. GWBOE pg 60. 182. 184. 346
Rectifier, Water. In Series. GWBOE pg 408
Relay Made from Electric Bell. GWBOE pg 197 
Relay, from Electric Bell. GWBOE pg 197
Relay, Homemade. GWBOE pg 369
Relay, Polarized. GWBOE pg 407
Relays, Building. GWBOE pg 149
Removing Enamel Insulation. GWBOE pg 396
Renewing a Radio Crystal. GWBOE pg 378
Renewing Dry Batteries with Sal Ammoniac. GWBOE pg 338
Renewing Dry Batteries. GWBOE pg 250. 
Renewing Dry Batteries. GWBOE pg 313
Repairing Storage Batteries. GWBOE pg 391. 
Resistance Units from Film Spools. GWBOE pg 383
Resistance, Measuring. GWBOE pg 361
Resistance, Units. GWBOE pg 393. 389
Restoring Old Magnets. GWBOE pg 46
Return Call Bell with One Wire. GWBOE pg 198 
Reversing a Small Motor. GWBOE pg 201 
Reversing Switch for Electrical Experiments. GWBOE pg 195 
Reversing Switch for Small Motors. GWBOE pg 311
Reversing Switch. GWBOE pg 195. 368
Revolution Counter Useful in Coil Winding. GWBOE pg 409
Revolution Counter. GWBOE pg 409
Rheostat, Battery. GWBOE pg 191. 263
Rheostat, for Radio, testing. GWBOE pg 346
Rheostat, for Radio. GWBOE pg 384
Ringing a Bell by Touching a Gas Jet. GWBOE pg 255 
Ringing the Doorbell Switches On the Porch Light. GWBOE pg 412
Robot Plays Card Games. GWBOE pg 129 
Rotating Electrical Contact Has Numerous Uses. GWBOE pg 37. 
Rubber Stamp Negatives. GWBOE pg 141
Rubber Stamp Negatives. GWBOE pg 141 
Script Onlaying. GWBOE pg 346
Searchlight, Small. GWBOE pg 240
Seeing an Alternating Current in a Mirror. GWBOE pg 374
Seismograph, Make. GWBOE pg 111
Self Lighting Arc Searchlight. GWBOE pg 106 
Servicing Electric Mixers. GWBOE pg 93 
Servicing Household Electric Fans. GWBOE pg. 65 
Shocking Handshake. GWBOE pg 212
Shocking Machine. GWBOE pg 214, 301
Short Circuit, Preventing. GWBOE pg 64
Signal for Lighted Lights in Basement. GWBOE pg 369
Signal for lights. GWBOE pg 369
Signal key for flashlights. GWBOE pg 411
Signal Key for Flashlights. GWBOE pg 411
Signal Telegraph with Green and Red Lights. GWBOE pg 345
Silver Plating Outfit. GWBOE pg 248
Simple Current Reverser. GWBOE pg 202 
Simple Electric Motor. GWBOE pg 448
Simple Experiment in Electromagnetism. GWBOE pg 343
Simple Homemade Buzzer. GWBOE pg 419
Simple Methods of Connecting Call Bells. GWBOE pg 297
Simple Mounting for Small Motor. GWBOE pg 384
Simple Open Circuit Telegraph Line. GWBOE pg 179 
Simple Switch for Reversing a Current. GWBOE pg 203 
Simplest test Set. GWBOE pg 104. 
Small Electrical Hydrogen Generator. GWBOE pg 178 
Snooperscope. GWBOE pg 119
Sockets, Miniature. GWBOE pg 234
Sounder for Wireless Telegraph Messages. GWBOE pg 314
Spacer for Coil Winding. GWBOE pg 420
Spark, Eliminating. GWBOE pg 399
Spotlight. GWBOE pg 400
Static Machine, Make. GWBOE pg 221
Steam Boiler, Electric. GWBOE pg 384
Steel Ball Motor Operated with Dry Cells. GWBOE pg 406
Stirring Machine. GWBOE pg 266
Stove. GWBOE pg 176. 365
Switch for Battery Charging on Motorboat. GWBOE pg 421
Switch on Electrode Holder Decreases Line Load. GWBOE pg. 78 
Switch to Brighten Auto Headlights. GWBOE pg 388
Switch. Dead-End. GWBOE pg 379
Switch. Decreases Line Load. GWBOE pg 78
Switch. Dimming. GWBOE pg 389
Switch. for battery charging. GWBOE pg 421
Switch. for dissolving views. GWBOE pg 401
Switch. for headlights. GWBOE pg 388
Switch. For Printing Papers. GWBOE pg 267
Switch. Four Way. GWBOE pg 392
Switch. Pendant. GWBOE pg 238
Switch. Reversing. GWBOE pg 311
Switch. Time. GWBOE pg 79
Synchronous Current Rectifier. GWBOE pg 162 
Target Box. GWBOE pg 345
Telegraph Recorder with Spool and Pencil Indicator. GWBOE pg 345
Telegraph. blinker. GWBOE pg 413
Telegraph. buzzer. GWBOE pg 239
Telegraph. codes. GWBOE pg 10. 259
Telegraph. GWBOE pg 9
Telegraph. key. and sounder. GWBOE pg 187
Telegraph. key. GWBOE pg 175. 237. 463
Telegraph. key. Lights. GWBOE pg 345
Telegraph. key. One-Wire Line. GWBOE pg 189
Telegraph. key. Open Circuit. GWBOE pg 179
Telegraph. key. Printing. GWBOE pg 428
Telegraph. key. Recorder. GWBOE pg 345
Telegraph. key. self closing. GWBOE pg 411
Telegraph. key. Short Distance. GWBOE pg 199
Telegraph. key. Sounder. GWBOE pg 266. 314. 342
Telegraph. key. Telephone Line. GWBOE pg 239
Telegraph. key. Wireless. GWBOE pg 11. 191. 207. 422
Telephone. GWBOE pg 248. 431
Telephone. Wireless. GWBOE pg 261. 283
Temperature Alarm. GWBOE pg 289
Temperature Indicators. GWBOE pg 41
Tesla Coil, Cigar Box. GWBOE pg 1
Tesla Coil, Souped Up. GWBOE pg 145
Test Board Accommodates Lamps of Various Sizes. GWBOE pg 104 
Test Board. GWBOE pg 104
Test Equipment, Keeping. GWBOE pg 92
Test Light. GWBOE pg 106
Test Prods have Self-Contained Current Supply. GWBOE pg 55. 
Test, Prods. GWBOE pg 55
Test, Simplest. GWBOE pg 104
Tester to Check Circuits in Multi-wire Cables. GWBOE pg 166 
Tester. GWBOE pg 105
Tester. multi wire cables. GWBOE pg 166
Tester. multi. GWBOE pg 73
Testing Direct Current Polarity with Litmus Paper. GWBOE pg 372
Testing Dry Cells with Light Bulb. GWBOE pg 368
Testing Lamps. GWBOE pg 238
Testing Radio Grounds. GWBOE pg 394
Testing Small Electric Lamps. GWBOE pg 238 
The Construction of a Polarized Relay. GWBOE pg 407
The Construction of a Simple Wireless Telephone Set. GWBOE pg 283
The Daniell Cell, and How to Make It. GWBOE pg 440
The Model Engineer. How to Make a Useful Bichromate Battery. GWBOE pg 424. 
The Model Engineer. The New Wireless Telegraphy. GWBOE pg 422
The Principle of Induction. GWBOE pg 124 
Thermostat, Wafer. GWBOE pg 78
Thief Catcher. GWBOE pg 343
Three Phase Variac. GWBOE pg 38 
Time Light. GWBOE pg 300
Tips on Wires. GWBOE pg 378
To Determine the Efficiency of Electrically Heated Devices. GWBOE pg 373
To Drive Away Dogs. GWBOE pg 201 
To Keep Dogs and Cats Away from the Garbage Can. GWBOE pg 197 
To Make a Watchcase Galvanometer. GWBOE pg 418
To Make an Electric Piano. GWBOE pg 232 
To Renew Old Dry Batteries. GWBOE pg 255 
To Tell When Aerial is Grounded. GWBOE pg 377
To Use Old Battery Zincs. GWBOE pg 193 
Tractor, Toy. GWBOE pg 338
Transformer Construction. GWBOE pg 32. 
Transformer, 110 Volt. GWBOE pg 263
Transformer, Auto. GWBOE pg 142
Transformer, Bell Ringing. GWBOE pg 290
Transformer, Build. GWBOE pg 23
Transformer, Construction. GWBOE pg 31
Transformer, Multi-Voltage. GWBOE pg 47
Transformer, Oscillation. GWBOE pg 386
Transformer, Power. GWBOE pg 52
Transmitter, Phone. GWBOE pg 254
Transmitting Music. GWBOE pg 202
Transmitting Pictures. GWBOE pg 432
Tricks of Fixing Electric Clocks. GWBOE pg 83 
Turning Lights On and Off from any Number of Places. GWBOE pg 237 
Using Auto Battery as B-Battery. GWBOE pg 386
V Belt Drive on Motors. GWBOE pg 165
V Pully Makes Armature Rack. GWBOE pg 56 
Variable Voltage Regulator. GWBOE pg 168 
Variac, three phase. GWBOE pg 38
Variometer Winding Form. GWBOE pg 392
Variometer, winding form. GWBOE pg 392
Vibrator for a Spark Coil. GWBOE pg 274 
Vibrator, Double Contact. GWBOE pg 342
Vibrator, for Spark Coil. GWBOE pg 274
Voltage Regulator. GWBOE pg 168
Voltameter, Pocket. GWBOE pg 238
Voltmeter. Battery. GWBOE pg 217
Voltmeter. Direct Current. GWBOE pg 320
Voltmeter. GWBOE pg 435
Wafer Thermostat Control for Electrical Devices. GWBOE pg. 78 
War Map. GWBOE pg 463
Warmer, Bed. GWBOE pg 242
Watch Those Watts. GWBOE pg 108 
Watch, Demagnetizing. GWBOE pg 221
Water Rheostat for Small Elctrical Devices. GWBOE pg 346
Water Rheostats in Series. GWBOE pg 408
Watts, Monitoring. GWBOE pg 108
Wehnelt Interrupter. GWBOE pg 452
Wheatstone Bridge for Coil Winding. GWBOE pg 380
Wheatstone Bridge. GWBOE pg 380
Why Gravity Batteries Fail to Work. GWBOE pg 206 
Wimhurst Machine. GWBOE pg 433. 438
Wind Vane Indicator. GWBOE pg 230. 246
Wind Vane. GWBOE pg 271
Winding Hollow Wireless Coils. GWBOE pg 418
Window Closer. GWBOE pg 366. 404
Wire Expansion Meter. GWBOE pg 323
Wire Expansion Meter. GWBOE pg 323
Wire splicing tool. GWBOE pg 399
Wire Terminals for Battery Connections. GWBOE pg 221 
Wire to paraffin. GWBOE pg 219
Wire winding. GWBOE pg 341
Wireless Detector. GWBOE pg 377
Wood Strip Prevents Short Circuits. GWBOE pg 64 
You can Build Your Own Transformer. GWBOE pg 23