ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS (tools for grinding B24D; sawing tools B27B33/00; tools for slotting or mortising machines B27F5/02; tools for the manufacture of wood shavings, chips, powder or the like B27L11/00); SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS

Introduced: September 1968

Description

B27G covers auxiliary equipment, hand tools, and protective mechanisms used in wood and wood-like material processing operations. This includes accessory machines that support primary woodworking processes, specialized hand tools for shaping and finishing wood, and safety devices designed to prevent injury during wood machining operations. The classification encompasses both stationary auxiliary equipment mounted to primary machines and portable tools employed in woodworking, as well as guards, brakes, and control systems that enhance operator safety.

Title

Titles differ between systems:

IPC: ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS

CPC: ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS (tools for grinding B24D; sawing tools B27B33/00; tools for slotting or mortising machines B27F5/02; tools for the manufacture of wood shavings, chips, powder or the like B27L11/00); SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS

Full Title

Full titles differ between systems:

IPC:

ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS

CPC:

ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS (tools for grinding B24D; sawing tools B27B33/00; tools for slotting or mortising machines B27F5/02; tools for the manufacture of wood shavings, chips, powder or the like B27L11/00); SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS

Additional Content IPC

Glossary

Auger Augers Wood augers are wood drills that have a screw to pull them into the wood, as a gimlet has, and a cutting lip that slices out the bottom of the hole. The auger bit (or drill) also has cutting spurs to cut a clean circle deeper than where the lips scrape out the wood Cutter block Cutter blocks Block for mounting cutters Gimlet Hand tool for drilling small holes without splitting the wood Kerf The groove or slit created by cutting a workpiece; an incision; the width of the groove made while cutting Mitre Angled cut, commonly 45 degrees Mitre joint mitre joints Joint made by bevelling each of two parts to be joined, often at a 45° angle, to form a corner, usually a 90° angle. The mitre joints can be made by sawing, planning, shearing or milling Shearing Cutting Spokeshaves Tool used to shape and smooth wooden rods and shafts such as wheel spokes and chair legs by shaving off small amounts of wood

Limiting references

Grinding tools Guide fences for timber in sawing machines Sawing tools Tools for slotting or mortising machines Tools for the manufacture of wood shavings, chips, powder, or the like

Application references

Other working of veneer or plywood specially adapted to veneer of plywood Machines or devices for making joints with tenon or like connections Machines for debarking or removing vestiges of branches from trees or logs

IPC and CPC are identically structured here. All 10 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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B27G 1/00 Machines or devices for removing knots or other irregularities or for filling-up holes IPC+CPC Available in IPC and CPC
B27G 11/00 Applying adhesives or glue to surfaces of wood to be joined +1 CPC IPC+CPC Available in IPC and CPC
B27G 13/00 Cutter blocks; Other rotary cutting tools (B27G15/00, B27G17/00 take precedence) +2 CPC IPC+CPC Available in IPC and CPC
B27G 15/00 Boring or turning tools; Augers IPC+CPC Available in IPC and CPC
B27G 17/00 Manually-operated tools −1 IPC IPC+CPC Available in IPC and CPC
B27G 19/00 Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws +3 CPC IPC+CPC Available in IPC and CPC
B27G 21/00 Safety guards or devices specially designed for other wood-working machines IPC+CPC Available in IPC and CPC
B27G 23/00 Gauging means specially designed for adjusting of tools or guides, e.g. adjusting cutting blades in cutter blocks ( for arrangement on manually operated saws B27B21/08; for guides of sawing machines B27B27/00) IPC+CPC Available in IPC and CPC
B27G 3/00 Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants IPC+CPC Available in IPC and CPC
B27G 5/00 Machines or devices for working mitre joints with even abutting ends IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B27,2013–2023, worldwide · Source: EPO PATSTAT

NANJING FORESTRY UNIVERSITY 960
ROBERT BOSCH DE 762
HOMAG DE 384
HARBIN ARTS AND CRAFTS COMPANY 350
NORTHEAST FORESTRY UNIVERSITY 343
SWISS KRONO TEC CH 304
MAKITA CORPORATION 298
DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 296
VAELINGE INNOVATION SE 287
HUSQVARNA SE 282

Top Applicants (CPC)

Class B27,2013–2023, worldwide · Source: EPO PATSTAT

ROBERT BOSCH DE 868
NANJING FORESTRY UNIVERSITY 463
HOMAG DE 437
HUSQVARNA SE 360
SWISS KRONO TEC CH 350
MAKITA CORPORATION JP 319
DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 312
VAELINGE INNOVATION SE 306
ANDREAS STIHL & COMPANY DE 275
FESTOOL DE 260