B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
 B01 - 
B07
Subsection index
LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION
Method
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/LIQUID OR SOLID/GAS SEPARATION
Method
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/SOLID SEPARATION
Method
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB07B
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
Apparatus
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB04B, B04C
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
  
SHAPING
 B27
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
 B27B
SAWS; COMPONENTS OR ACCESSORIES THEREFOR (saws specially adapted for pruning or debranching A01G 3/00; sawing apparatus specially adapted for felling trees A01G 23/00; features not restricted to a particular type of wood saw B23D, e.g. attaching saw blades B23D 51/00; machine tool frames, beds, pillars or like members, in general B23Q 1/00)  [5]
 B27B
Subclass index
SAWS CHARACTERISED BY THE ACTIVE ELEMENT
Reciprocating 3/00, 11/00, 19/00
Circular 5/00, 7/00, 9/00
Band or strap 13/00, 15/00
Chain 17/00
Other kinds 23/00
PORTABLE OR HAND SAWS 9/00, 21/00
ACTIVE ELEMENTS 23/00, 33/00
ACCESSORIES 25/00 - 31/00
SAWING TRUNKS OR LOGS, SAWS SPECIALLY ADAPTED THEREFOR 1/00, 3/00, 7/00, 15/00
P:0 B27B 1/00
Methods for subdividing trunks or logs essentially involving sawing (features of machines used, see the relevant groups for the machines)
P:10 B27B 3/00
Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
 B27B 5/00 - 
B27B 11/00
Circular saws
P:80 B27B 5/00
Sawing machines working with circular saw blades (for length sawing of trunks B27B 7/00); Components or equipment therefor
P:70 B27B 7/00
Sawing machines working with circular saw blades, specially designed for length sawing of trunks
P:90 B27B 9/00
Portable power-driven circular saws for manual operation (details or components, e.g. handles, casings, of portable power-driven tools not particularly related to the operation performed B25F 5/00)  [4]
P:20 B27B 11/00
Cross-cut reciprocating saws with power drive; Appurtenances therefor
 B27B 13/00 - 
B27B 15/00
Band or strap sawing machines
P:60 B27B 13/00
Band or strap sawing machines (for length cutting of trunks B27B 15/00); Components or equipment therefor
P:50 B27B 15/00
Band or strap sawing machines specially designed for length cutting of trunks
   
P:40 B27B 17/00
Chain saws; Equipment therefor
P:30 B27B 19/00
Other reciprocating saws with power drive; Fret-saws (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F 5/00)  [4]
P:100 B27B 21/00
Hand saws without power drive (B27B 19/00 takes precedence); Equipment for hand sawing, e.g. saw horses
P:110 B27B 23/00
Other cutting of wood by non-rotary toothed tools; Tools therefor (cutting with hot wire B27M 1/00)
 B27B 25/00 - 
B27B 33/00
Components or accessories for saws
P:150 B27B 25/00
Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees (B27B 31/00 takes precedence)  [5]
P:160 B27B 27/00
Guide fences or stops for timber in saw mills or sawing machines; Measuring equipment thereon (safety guards or devices specially designed for wood saws B27G 19/00; constructional features of measuring devices G01B)
P:130 B27B 29/00
Gripping, clamping, or holding devices for the trunk or log in saw mills or sawing machines (safety guards or devices specially designed for wood saws B27G 19/00; for other timber, see the relevant groups for the machines); Travelling trunk or log carriages
P:140 B27B 31/00
Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines (B27B 29/00 takes precedence)
P:120 B27B 33/00
Sawing tools for saw mills, sawing machines, or sawing devices