=STEAM BOILERS.=
=Strength of Boiler Shells= 350
=Strength of Boiler Plate= 351
Explanation of pressure in steam boilers 351
=Boiler Joints or Seams= 351 to 357
Forms of rivet joints 351
Single riveted lap joint 351
Double riveted lap joint 352
Single riveted butt joint with straps 352
Double riveted butt joint with straps zigzag riveted 352
Triple riveted lap joint zigzag riveted 352
Lap joint with covering plate 352
Double riveted lap joint chain riveted 353
Double riveted butt joints with double straps 353
Treble riveted butt joint with double straps 353, 354
Rules for spacing the rivets in boiler seams 353
Rule for finding diagonal pitch of riveted joints 353
High percentage joint 353
Rivets unevenly pitched 354
Rule for calculating the percentage strength of joint with
unevenly pitched rivets 354
Strength of circumferential seams of stationary engine boilers
354, 355
Table of additions to be made to the factor of safety for
various constructions of riveted joints 355
Table of diameter of rivets for single riveted lap joints 356
Rule for making rivet and plate area equal 336
Table of rivet diameter and pitch for single riveted lap joints 356
Rule for finding the pitch for double, diagonal riveted lap
joints 356
Example in the use of rule for diagonal pitch of rivets 356
Rule for finding distance V where the diagonal pitch has been
found 357
Comparing chain with zigzag riveted joints 357
=Interior of Boilers= 358 to 364
The internally fired flue boiler 358, 359
Boiler with Field tubes 350
Vertical water tube boiler 360
Construction of field tubes 360
Arrangement of field tubes 360
Vertical boilers with external uptakes 361
Horizontal return tubular boiler 361, 362
Construction of horizontal return tubular boiler 362, 363
Various arrangements of tubes in boilers 364
=Setting Boilers= 364, 366
Ground plan of brickwork 365
Setting full arch front boilers 365
Table of measurements for setting tubular stationary boilers
with full arch front 366
Table of measurements for setting stationary boilers with half
arch front 366
=The Evaporative Efficiencies of Boilers= 366 to 368
Table of the pressure, temperature and volume of steam 367
Calculating the evaporation of a boiler 368
=Care and Management of Boilers= 368 to 371
Examining safety valves 368
Water gauge glass 368
Gauge cocks 368
Lighting boiler fires 368
The thickness of the fire for boilers 368
Managing the fire 368
Shaking grate bars 369
The slice bar 369
The hoe 369
The poker 369
The clinker hook 369
The rake 369
The quantity of water in a boiler 369
Leaving the fire for the night 369
Leaving the safety valve for the night 369
Regulating the boiler feed 369
Dirty feed water 370
Defective feed pumps 370
Scale in boilers 370
Preventing the formation of scale 370
Feed water heaters 370
Low water in boilers 370
Priming or foaming 370
The known causes of priming 370
Wastefulness of priming 370
The detection of priming 370
To prevent or stop priming 370
Surface blow off cock or mechanical boiler cleaner 370
Blowing off a boiler 370
Blowing down a boiler 370
Washing out a boiler 371
Cleaning a boiler 371
Scaling a boiler 371
Examining a boiler 371