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to use electricity only. Dash, coil and speedometer lamps are depicted at C. A combination trouble lamp and cigar lighter is shown at D. The trouble lamp at E is an easily portable form and is convenient for use around the power plant, gasoline tank, etc., deriving its current from the regular battery. A combination tail lamp, having red lens at the rear and a white glass at the side to illuminate the number plate, is shown at F. The approved construction of a variable focus electric head lamp is shown at G.

The simple attachment shown at Fig. 293, A, is intended to convert any dry cell to a convenient inexpensive and portable electric lantern. It consists of a reflector carried by a frame that attaches to the terminals of the dry cell. To take the strain from the terminals when the cell is carried, a supplementary clamping band is also secured to the handle, this being fastened to the top of the cell.

The feature of the Federal electric hand lantern shown at B, is that it casts no shadow on the ground beneath it. Instead of having the lamp at the top with a solid base beneath, it has an open foot consisting of a ring and four legs, so that the light is strong immediately under the hand of the person carrying it as well as spread all around. It is fed with current from a special dry cell that is easy to replace, and clips are supplied to fasten the lamp to the running board of the car. It is very compact when folded and the lamp bulb is well protected, while there is a space inside the dry cell where a spare bulb can be put.

For automobiles without electric lighting sets when a moderate illumination is required now and then for short periods, there is a great deal in favor of dry batteries as a source of current, as they are less trouble to look after than oil lamps. The Wireless Autolight depicted at C is a well-made case supplied with a lamp and reflector, glazed in white, green or red.

green or red. It takes a standard No. 6 cell.

Searchlights of the form shown at D are also becoming popular because these are carried on dirigible brackets attached to the windshield or any other convenient part of the car and the beam of light can be directed against sign boards, around curves, etc., at the operator's pleasure.

Novel Bulb Designs.—Combining two separate and distinct lights in one, the Tulite bulb, shown at A, Fig. 295, is designed solving the headlight glare problem. Two types of this bulb are shown, type R being inserted in the lamp with the minor filament above the major, projecting the light to the roadway at short range. This allows the focusing of a strong headlight as far ahead as desired and, when switching to the minor filament, a good driving light at 40 to 75 feet in front of the car. Type A has a minor filament, mostly surrounding the major and diffuses the light in a general way, covering eight to ten times the area of the major filament when lighted. The standard Tulite bulb is 4 candlepower on the minor and 20 candlepower on the major filament, but other combinations are furnished.

A new type of headlight bulb is the Argon depicted at B, which is filled with nitrogen gas, put into it by pressure. This gas contains a small percentage of argon, about 2 per cent., which, the maker claims, permits the use of a higher voltage for a given filament. The filament is of drawn tungsten wire and is so coiled that when properly focused the lamp does not produce dark rings.

INDEX

PAGE

29

А

PAGE
Acid and Water Carboy Stand.. 149

Battery Ignition System Hints.. 179
Action of Dry Cell....

25

Battery Ignition Systems, Trou-
Action of Dynamo.

bles in

134
49
Action of High Tension Ignition

Battery Ignition, Timing.. 181
System

24
74

Battery, Simple Primary.
Action of Low Tension Magneto 45

Baumé-Specific Gravity Equiv-
alents

140
Action of Mercury Arc Rectifier 150
Action of Splitdorf-Dixie Mag-

Bijur-Hupmobile Starting Gear-
neto

294
206

ing
Action of Storage Battery.

372

Bijur One-Unit System.
Action of Switch.....

22

Bijur-Packard System.... 383
Adjusting Bosch - Rushmore

Bijur Systems, Lighting and
Starting

372
Regulator

458
Adjusting Magneto

381
Contact

Bijur System Parts.
Breaker

Bijur Two-Unit Systems.. 373
233

374
Adjustment of Bosch-Rushmore

Bijur Voltage Regulator..
Relay

390
Bosch DeLuxe System.

458
Air Heater,

200
Electric..

Bosch D. U. 4 Magneto...
482

Bosch N. U. 4 Magneto... 202
Alternating Current Rectifiers.. 149

Bosch-Rushmore Automatic Re-
Ammeter, Delco

96
lay

458
Ampere, Definition of...

59

Bosch-Rushmore Regulator.. 458
Amperemeter, Function of. 271

Bosch-Rushmore Systems.

390
Amperemeter Indications, Delco
System

427
446

Brushes, Care of...
Brushes, For Magneto..

42
Apparatus for Battery Charg-
ing

499
148

Bulbs, Novel Designs of.
Buzzer Horns

472
Atwater-Kent Distributor.

85
Auto-Lite System...

339
Automatic Controls.

267

C
Automatic Safety Switch. 484
Automatic Spark Advance..... 227 Capacity of Storage Battery.... 30
Automatic Spark Advance,

Care and Repair of Commuta-
Delco

91
tors

429
Care of Bosch N. U. 4 Magneto 204
Care of Brushes

427
B
Care of Lamps...

436
Battery Charging Apparatus. ... 148 Chalmers-Entz System...

339
Battery Charging, Lamp Bank Charging Batteries from Alter-
for

155 nating Current Mains...... 149

[blocks in formation]

Cranking Action, Voltmeter Test
for

452
Cure for Sulphating.

147
Current Flow, Gray & Davis
System

... 352
Current Fluctuation in Magneto 40
Current Production, by Chemical
Action

23
Current Regulation by Third
Brush

327

D

94

Charging Edison Battery....... 160
Charging from Direct Current.. 153
Charging Rules..

143
Charging Storage Battery.... 141
Chemical Action Produces Elec-
tricity

23
Circuit Breaker, Delco...

94
Circuit Breaker or Cutout... 267
Circuit Breaker, Thermostatic.. 122
Circuit, Closed

22
Circuit, Open

22
Circuits, Gray and Davis Sys-
tem

352
Cleaning Spark Plugs..

166
Cleaning Vibrator Points. 169
Closed Circuit

22
Closed Circuit Distributor Sys-
tem

120
Closed Circuit, Parts of.

22
Closed Coil Winding..

56
Combination Switch, Delco.. 98
Commutators, Care of... 429
Comparing High and Low Ten-
sion Magneto

46
Comparing Two-Unit and One-
Unit Systems...

279
Compound Distributor.

208
Compound Wound Dynamo.... 54
Compressed Gas, How Ignited.. 66
Condenser, Function of.

70
Condensers, Delco...

92
Conductors,
Electrical.

22
Connecticut Ignition System,
1916 Type.....

122
Connecticut Ignition Unit..

120
Constant Speed Dynamo.

51
Construction of Storage Battery 28
Contact Breaker, Connecticut
System

120
Contact Points, Adjusting...... 232
Contact Points, Cleaning.. 232
Contacts, How Spaced in Timers 81

Defective Windings, Testing for 447
Definition of Electrical Terms.. 56
Delco Ammeter

96
Delco Ammeter Reading, Motor-
ing Generator...

... 450
Delco Automatic Spark Advance 91
Delco Circuit Breaker.
Delco Combination Switch. 98
Delco Condenser....

92
Delco Cranking Action, Test of 452
Delco Current Output Regula-
tion

326
Delco Generator Clutch.

317
Delco Generator Troubles, In-
dications

446
Delco Ignition Coil Parts.

92
Delco Ignition Distributor, 1916
Model

96
Delco Ignition System..

87
Delco Induction Coil..

92
Delco Motor Clutch.

320
Delco Motor Generator..

314
Delco Motor Generator Lubrica-
tion

320
Delco Resistance Unit..

94
Delco Starting and Lighting
Systems ..

312
Delco Starting Switch.

304
Delco System Troubles.

442
Delco Test Points..

445

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