IPC 7 English version B27L-B27L 11/08

B27L-B27L01108

SECTION B – PERFORMING OPERATIONS; TRANSPORTING

B 27

WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL

B 27 L

REMOVING BARK OR VESTIGES OF BRANCHES (forestry A01G); SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER

Debarking or removing vestiges of branches from trees or logs (debarking by chemical treatment B27L 3/00); Machines therefor [2]

Note

Tree-feeding devices are covered by group B27B 25/00. [5]

by rubbing the trunks against each other (B27L 1/04 takes precedence); Equipment for wet practice [5]

by rubbing the trunks in rotating drums [5]

Drums therefor [5]

Manually-operated or portable devices for debarking or for removing vestiges of branches

using rotating rings [5]

using rotatable tools (B27L 1/04, B27L 1/08, B27L 1/12 take precedence) [5]

using pliable tools [5]

using jets of fluid [5]

Debarking by chemical treatment

Manufacture of veneer (working veneer or plywood B27D)

Cutting strips from a rotating trunk or piece; Veneer lathes

the trunk being rotated about an axis lying outside it

Cutting strips from a stationarily-held trunk or piece by a rocking knife carrier, or from rocking trunk or piece by a stationarily-held knife carrier; Veneer-cutting machines

Severing sheets or segments from veneer strips; Shearing devices therefor; Making veneer blanks, e.g. trimming to size

Arrangements for splitting wood [6]

using rotating members [6]

Conical screws [6]

using wedges, knives or spreaders (B27L 7/02 takes precedence) [6]

using chopping blocks [6]

Manufacture of wooden sticks, e.g. toothpicks (of walking sticks, of sticks for umbrellas B27M 3/38; combined with other operations in the manufacture of matches C06F)

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Manufacture of wood shavings, chips, powder, or the like (disintegrating in general B02C; edge trimming sawing blades or sawing tools combined with means to disintegrate waste B27B 33/20; obtaining fibres for spinning D01B 1/00; wet methods D21B 1/12); Tools therefor [2]

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of wood shavings or the like

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of wood wool

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of wood powder or sawdust (grinding-stones B24D)

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of wood fibres, e.g. produced by tearing