|  | B |
SECTION B — PERFORMING OPERATIONS

PRINTING

|  | B43 |
WRITING AND DRAWING APPLIANCES; BUREAU ACCESSORIES

|  | B43L |
ARTICLES FOR WRITING OR DRAWING UPON; ACCESSORIES FOR WRITING OR DRAWING (workshop equipment for marking-out work Fulltext... Hierarchy... Expanded...B25H 7/00)

|  | B43L 1/00 - B43L 5/00 |
Articles for writing or drawing upon

|  | B43L 1/00 |
Repeatedly-usable boards or tablets for writing or drawing (drawing-boards Fulltext... Hierarchy... Expanded...B43L 5/00)

|  | B43L 1/02 |
· | Slates

|  | B43L 1/04 |
· | Blackboards (easels Fulltext... Hierarchy... Expanded...A47B 97/04)

|  | B43L 1/06 |
· · | rigid

|  | B43L 1/08 |
· · | flexible

|  | B43L 1/10 |
· · | Writing surfaces thereof

|  | B43L 1/12 |
· | having translucent writing surfaces producing visual impressions by co-operation with backing members

|  | B43L 3/00 |
Writing or drawing-underlays, e.g. blotting pads (blotters Fulltext... Hierarchy... Expanded...B43L 17/00)

|  | B43L 5/00 |
Drawing-boards (drawing-desks or tables Fulltext... Hierarchy... Expanded...A47B 27/00, Fulltext... Hierarchy... Expanded...A47B 85/02; stands for drawing-boards Fulltext... Hierarchy... Expanded...A47B 97/04)

|  | B43L 5/02 |
· | having means for clamping sheets of paper thereto (drawing-pins Fulltext... Hierarchy... Expanded...B43M 15/00)

|  | B43L 7/00 - B43L 15/00 |
Writing or drawing aids

|  | B43L 7/00 |
Rulers (guides for rulers other than for T-squares Fulltext... Hierarchy... Expanded...B43L 13/04; adjustable curve rulers Fulltext... Hierarchy... Expanded...B43L 13/22; devices for measuring length Fulltext... Hierarchy... Expanded...G01B)

|  | B43L 7/02 |
· | T-squares

|  | B43L 7/04 |
· | with rollers (with interconnected rollers Fulltext... Hierarchy... Expanded...B43L 13/02)

|  | B43L 7/06 |
· | with adjustably-pivoted arms

|  | B43L 7/08 |
· | with arrangements for attaching additional drawing equipment, e.g. for hatching, dotting

|  | B43L 9/00 |
Circular curve-drawing or like instruments (curve rulers or templets Fulltext... Hierarchy... Expanded...B43L 13/20)

|  | B43L 9/02 |
· | Compasses (proportional compasses Fulltext... Hierarchy... Expanded...B43L 9/08; compasses for drawing spirals Fulltext... Hierarchy... Expanded...B43L 11/06)

|  | B43L 9/04 |
· · | Beam compasses

|  | B43L 9/06 |
· · | with legs formed by flat springs

|  | B43L 9/08 |
· | Proportional compasses or dividers

|  | B43L 9/10 |
· · | with arrangements for drawing polygons

|  | B43L 9/12 |
· | Dividers (proportional dividers Fulltext... Hierarchy... Expanded...B43L 9/08)

|  | B43L 9/14 |
· | with changeable legends for conversion into compasses, dividers, or callipers (Fulltext... Hierarchy... Expanded...B43L 9/24 takes precedence)

|  | B43L 9/16 |
· | Features common to compasses, dividers, and callipers

|  | B43L 9/18 |
· · | Legs with toggle joints

|  | B43L 9/20 |
· · | Pivots

|  | B43L 9/22 |
· · | Leg-angle adjusting-means separate from pivots

|  | B43L 9/24 |
· · | Means for mounting points or writing appliances on legs

|  | B43L 11/00 |
Non-circular-curve-drawing instruments (curve rulers or templets Fulltext... Hierarchy... Expanded...B43L 13/20)

|  | B43L 11/02 |
· | for drawing conic sections

|  | B43L 11/04 |
· · | for drawing ellipses

|  | B43L 11/06 |
· | for drawing spirals

|  | B43L 11/08 |
· | for drawing involutes

|  | B43L 13/00 |
Drawing instruments, or writing or drawing appliances, not otherwise provided for; Drawing accessories (stencils for surface decoration Fulltext... Hierarchy... Expanded...B44D)

|  | B43L 13/02 |
· | Draughting machines or drawing devices for keeping parallelism (T-squares Fulltext... Hierarchy... Expanded...B43L 7/02)

|  | B43L 13/04 |
· · | Guides for rulers

|  | B43L 13/06 |
· · · | with pivoted guide rods

|  | B43L 13/08 |
· · | Protractor heads

|  | B43L 13/10 |
· | Pantographic instruments for copying, enlarging, or diminishing

|  | B43L 13/12 |
· · | Multiple writing devices

|  | B43L 13/14 |
· | Devices for drawing in perspective

|  | B43L 13/16 |
· · | free-hand

|  | B43L 13/18 |
· · · | having optical or projecting equipment (optical systems or apparatus Fulltext... Hierarchy... Expanded...G02B; projectors Fulltext... Hierarchy... Expanded...G03B)

|  | B43L 13/20 |
· | Curve rulers or templets

|  | B43L 13/22 |
· · | Adjustable curve rulers

|  | B43L 13/24 |
· | Devices for generating stepwise movements of drawing equipment, e.g. for hatching

|  | B43L 15/00 |
Supports for attachment to hands or arms for facilitating writing or drawing

|  | B43L 17/00 - B43L 27/00 |
Writing or drawing accessories

|  | B43L 17/00 |
Blotters (blotting pads Fulltext... Hierarchy... Expanded...B43L 3/00; making blotting paper Fulltext... Hierarchy... Expanded...D21F 11/14)

|  | B43L 17/02 |
· | for blotting-paper sheets

|  | B43L 17/04 |
· · | hand-held

|  | B43L 17/06 |
· | for reeled blotting-paper

|  | B43L 17/08 |
· · | Roller blotters

|  | B43L 17/10 |
· | using blotting material other than paper

|  | B43L 19/00 |
Erasers, rubbers, or erasing devices; Holders therefor (rubbers or erasing knives combined with writing appliances Fulltext... Hierarchy... Expanded...B43K 29/02, Fulltext... Hierarchy... Expanded...B43K 29/18)

|  | B43L 19/02 |
· | Erasing knives (knives in general Fulltext... Hierarchy... Expanded...B26B)

|  | B43L 19/04 |
· | Fibrous erasers

|  | B43L 21/00 |
Blackboard or slate-cleaning devices

|  | B43L 21/02 |
· | with means for absorbing the chalk dust

|  | B43L 21/04 |
· | Wiper holders

|  | B43L 23/00 |
Sharpeners for pencils or leads (grinding or cutting tools in general Fulltext... Hierarchy... Expanded...B26, Fulltext... Hierarchy... Expanded...B24)

|  | B43L 23/02 |
· | with gearing

|  | B43L 23/04 |
· · | with cranked handles

|  | B43L 23/06 |
· | in which the pencils or leads are sharpened by only axial movement against cutting blades

|  | B43L 23/08 |
· | in which the pencils or leads are sharpened mainly by rotational movement against cutting blades (Fulltext... Hierarchy... Expanded...B43L 23/02 takes precedence)

|  | B43L 25/00 |
Ink receptacles (liquid receptacles in general Fulltext... Hierarchy... Expanded...B65D, e.g. Fulltext... Hierarchy... Expanded...B65D 1/00)

|  | B43L 25/02 |
· | with separate dipping-cups

|  | B43L 25/04 |
· · | supplied by pressure arrangements

|  | B43L 25/06 |
· · | supplied by tilting the receptacles

|  | B43L 25/08 |
· | with arrangements for dissolving ink powder

|  | B43L 25/10 |
· | with means for holding objects

|  | B43L 25/12 |
· | with pen-wiping means

|  | B43L 27/00 |
Ink stands

|  | B43L 27/02 |
· | having means for securing objects thereon

|  | B43L 27/04 |
· | securable to other objects