CHAPTER XXXV.

=WOOD WORKING MACHINERY.=

=Classification= 287 =Circular Saws= 287 to 305 Gauges for circular saws 287 Table of diameters 287 Thickness 287 Size of mandrel hole 287 Shingle saw 287, 288 Concave saw 287, 288 Stretching of circular saws by heat 288 The tension of circular saws 288 Causes of alteration of tension and method of discovering the same 288 Truth of circular saws 288 Various effects of circular saws heating 288 Truing circular saws 288 Sharpening the teeth of circular saws 289, 290 The gumming, gulleting or chamfering machine 290 Inserted teeth of saws 290 Chisel teeth saws 290, 291 Inserting teeth in circular saws 290, 291 Swing frame saws 290, 292 Fence for swing frame saws 293 Examples of work done on swing frame machine 293 Swing machine with fixed table 294 Double saw machine 294, 295 Gauges for sawing machine 294 Method of employing the mitre gauge 294 Cropping and gauging gauge 296 Bevel or mitre sawing machines 296, 298 Roll feed circular saw machine 298, 300 Segmental circular saws 300 Fastening saw segments to their disks 301 Gang edging machines 301 Rack feed saw bench 301 Construction of the feed motion 301 to 304 Fibrous packing for circular saw 305 =Tubular Saw Machine= 305 =Cross Cutting or Gaining Machine= 305, 306 =Scroll Sawing Machine= 306 Construction of various scroll sawing machines 306, 307 =Band Sawing Machine= 308 to 312 Various kinds of teeth for band saws 308, 309 Pitch of teeth for band saws 309 The adjustment of the saws of band saw machines 309, 310 Filing the teeth of band saw machines 309 Re-sawing band saw machine 309, 310 To regulate the tension of band saws 310, 311 Construction of band saw guides 311 Various band saw machines 311, 312 =Reciprocating Cross Cutting Saw= 312 Construction of 312 =Horizontal Saw Frame Machine= 312 to 315 Construction of the saw driving mechanism 314 Construction of the feed motion 315 Construction of the saw 315 =Planing Machines= 315 to 341 Buzz planer 315 Construction of the work table 316 Construction of the cutter head 316 Skew knives 316 Roll feed wood planing machine 317 The construction of the feed rolls 317 Adjustment of the feed rolls 317 Construction of the pressure bars 317 Adjustment of the roll pressure 318 Adjustment of the work table 318 The roll driving mechanism 319 The cutter head 320 Three feed roll wood planing machine 322, 323 Pony planer 323 Construction of the feed mechanism 324 Balancing cutter heads and knives 324, 326 Farrar planing machine 326, 327 Planing and matching machine 328 Construction of the feed rolls 329 Construction of the upper cylinder 329 Construction of the lower cylinder 329 Construction of a matcher hanger 329 The timber planer 330, 331 Construction of parts of the timber planer 331 How the timber planer operates 331, 332 Panel planing and trying up machine 332, 334 Moulding machine 334 Double head panel raiser and double sticker 335, 336 Moulding cutters 336, 337 Cutter heads and circular cutters 337 The Shimer head 337 Head for producing match board grooves 337, 338 Jointing machine 338 Knives of jointing machine 338 Speed of cutter head or disc 338 Stroke jointers 338, 339 Machine for cutting mitre joints 339 Moulding or friezing machines 339 Important points of friezing machines 339 Construction of moulding and friezing machines 340, 341 Shape of cutters for moulding and friezing machine 341 Rotary cutters for all kinds of work, and for edge moulding and friezing machine 341 to 343 =Boring Machines= 342 Fences for 342 Augers or bits for 342 Boring machines for heavy work 343 =Mortising Machines= 344 Tools used in mortising machines 344 Motion of chisel bar and auger 344 Construction of bed 344 Adjustment of carriage 344 =Tenoning Machines= 344, 345 Construction of revolving heads 344, 345 Tenoning machine for heavy work 346 =Sand-papering Machines= 346, 349 Construction of sand-papering machines 347, 348 Movements of sand-papering machine 347 Cylinder sand-papering machines 348 Self-feeding sand-papering machine 348 Sizes of machines 348 Construction of feed rolls 348 Finishing and roughing cylinders 348 Brush attachment 348 Double wheel sanding machines 348, 349