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
  
PRINTING
 B41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS (reproduction or duplication of pictures or patterns by scanning and converting into electrical signals H04N)  [4]
 B41L
APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING, OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES (printing presses or machines for industrial purposes B41F; stamps, stamping or numbering devices B41K)
 B41L

Note(s)

  1. This subclass does not cover constituent parts common to manifolding by means of pressure-sensitive layers or intermediaries, to apparatus or machines for duplicating or printing for office or other commercial purposes, or to addressing machines or like series-printing machines, which are covered by subclass B41F.
  2. In this subclass, as indicated by the references, groups B41L 15/00 and B41L 17/00 are intended to cover letterpress and lithographic printing apparatus only in so far as it is specially adapted for office or other commercial purposes; the general constructions or features of apparatus of these types are classified in subclass B41F. Constructions or features determining classification in these groups are, for example: ease of operation by clerical staff, cleanliness of operation in non-industrial environments, the use of printing surfaces constructed for the production of a limited number of copies.
  3. In this subclass, the following terms are used with the meanings indicated:
    • "manifolding" means the obtaining of several copies simultaneously by means of pressure-sensitive layers when making an original;
    • "duplicating" means the obtaining of successive copies from a master, e.g. a hectographic image;
    • "stencilling" involves the use of a printing surface which is perforated to form the image, the ink flowing through the perforations on the copy material.
 B41L
Subclass index
MANIFOLDING 1/00, 3/00, 5/00
DUPLICATING
From hectographic masters 7/00, 9/00, 11/00
By stencil 13/00
Otherwise 19/00
PRINTING
Letterpress apparatus 15/00
Lithographic apparatus 17/00
Other apparatus 19/00
COMMON DETAILS OR ACCESSORIES
Treatment of surfaces before printing; handling thereof 23/00; 21/00, 33/00
Impression or offset surfaces; moistening thereof 38/00; 25/00
Inking 27/00
Handling printing elements or formes 29/00 - 33/00
Cylinders; Attaching coverings or make-ready devices 35/00; 38/00
Auxiliary operations 39/00, 41/00, 43/00
SPECIAL MACHINES FOR SERIES-PRINTING 45/00, 47/00, 49/00
 B41L 1/00 - 
B41L 5/00
Manifolding by means of pressure-sensitive layers or intermediaries
P:20 B41L 1/00
Devices for performing operations in connection with manifolding by means of pressure-sensitive layers or intermediaries, e.g. carbons; Accessories for manifolding purposes
P:10 B41L 3/00
Platens or like sheet supports for manifolding using pressure-sensitive layers or intermediaries, e.g. for book-keeping purposes
P:0 B41L 5/00
Autographic registers or like manifolding apparatus using movable strips or webs (movable-strip writing or reading apparatus B42D 19/00)
 B41L 7/00 - 
B41L 19/00
Apparatus or machines for duplicating or printing for office or other commercial purposes
P:40 B41L 7/00
Apparatus for directly duplicating from hectographic originals, i.e. for obtaining copies in mirror image
P:30 B41L 9/00
Apparatus for indirectly duplicating from hectographic originals by means of hectographic intermediaries or transfer surfaces, i.e. "dry duplicators"
P:50 B41L 11/00
Apparatus for directly duplicating from hectographic masters in mirror image, i.e. "wet duplicators" for producing positive copies
P:60 B41L 13/00
Stencilling apparatus for office or other commercial use (screen printing B41F 15/00; stencils, stencil materials, carriers therefor B41N 1/24)
 B41L 13/04
·  with curved or rotary stencil carriers
P:70 B41L 15/00
Letterpress printing apparatus specially adapted for office or other commercial purposes (in general B41F; printing plates or foils, materials therefor B41N 1/00)
P:80 B41L 17/00
Lithographic printing apparatus for office or other commercial purposes (in general B41F; printing plates or foils, materials therefor B41N 1/00)
P:90 B41L 19/00
Duplicating or printing apparatus or machines for office or other commercial purposes, of special types or for particular purposes and not otherwise provided for (addressing machines B41L 45/00)
 B41L 21/00 - 
B41L 43/00
Common details of, or accessories for, apparatus or machines for manifolding, duplicating, or printing for office or other commercial purposes
P:180 B41L 21/00
Devices for conveying sheets or webs of copy material through apparatus or machines for manifolding, duplicating, or printing (mechanisms for conveying copy material through addressing machines or like series-printing machines B41L 47/00)
P:130 B41L 23/00
Devices for treating the surface of sheets, webs, or other articles in connection with printing (cleaning in general B08B, of metals C23G; as a final step in the manufacture of such articles, see the relevant places, e.g. B29C 71/00, D21H 23/00 or D21H 25/00; after-treatment of prints B41M 7/00)
P:120 B41L 25/00
Devices for damping printing surfaces, e.g. moistening printing surfaces in connection with lithographic printing (applying liquids or other fluent materials to surfaces, in general B05)
P:140 B41L 27/00
Inking arrangements or devices (inking units for stencilling apparatus B41L 13/00; applying liquids or other fluent materials to surfaces, in general B05)  [3]
P:150 B41L 29/00
Devices for attaching printing elements or formes to supports
P:160 B41L 31/00
Devices for removing flexible printing formes from forme cylinders
P:190 B41L 33/00
Pressing flexible printing formes or sheets or webs of copy material against cylinders, e.g. for smoothing purposes
P:170 B41L 35/00
Cylinders for apparatus or machines for manifolding, duplicating, or printing for office or other commercial purposes
P:110 B41L 38/00
Devices for attaching coverings or make-ready devices; Guiding devices for coverings (make-ready devices B41N 6/00; blankets or like coverings B41N 10/00)  [5]
P:100 B41L 39/00
Indicating, counting, warning, control or safety devices (ink-level control devices B41L 27/00; such devices in general, see the relevant subclasses, e.g. counting in general G06M)  [3]
P:210 B41L 41/00
Cleaning arrangements or devices
P:200 B41L 43/00
Auxiliary folding, collecting, or depositing of sheets or webs
 B41L 45/00 - 
B41L 49/00
Addressing machines or like series-printing machines
P:220 B41L 45/00
Kinds or types of addressing machines or of like series-printing machines
P:230 B41L 47/00
Details of addressing machines or like series-printing machines (common details of printing machines B41F 21/00-B41F 35/00)
P:240 B41L 49/00
Accessories or attachments for addressing machines or like series-printing machines