- Project Runeberg -  Machinists' and Draftsmen's Handbook /
viii

(1910) Author: Peder Lobben - Tema: Mechanical Engineering
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BEARINGS.
Area of bearing surface 369
Allowable pressure in bearings 369
GEAR TEETH.
Circular pitch 375
To calculate diameter of gear according to circular pitch 375
Table of pitch diameter of gears 376
To calculate diameter of gears when distance between
centers and ratio of speed is given
376
Diametral pitch 377
To calculate the number of teeth when distance between
centers and ratio of speed is given
381
Cycloid teeth 382
Involute teeth 337
Approximate construction of involute teeth 388
Internal gears with involute teeth 391
Chordal pitch 391
Rim, arms and hub of spur gears 393
Width of gear wheels 397
Bevel gears 397
Cutting bevel gears 401
Worms and worm gears 403
Calculating the size of worm gears 406
Elliptical gear wheels 408
Strength of gear teeth 409
SCREWS.
Pitch, inch pitch and lead of screws and worms 417
Screw cutting by the engine lathe 417
Cutting multiple threaded screws and nuts by the engine
lathe
417
U. S. Standard screws 418
Diameter of tap drill 420
Coupling bolts 422
Fillister head screws 422
Dimensions of hexagon and square head cap screws 423
Wood screws and machine screws 423
International standard metric screw threads 433
To gear a lathe to cut metric thread when the lead
screw is in inches
436
Rivets, nails, eyebolts 438
Lag screws 439
PIPES.
Wrought iron pipes 410
Brass and copper tubes 441
Boiler tubes 442
Cold drawn steel tubing 442

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