|  | B |
SECTION B — PERFORMING OPERATIONS

SHAPING

|  | B28 |
WORKING CEMENT, CLAY, AND STONE

|  | B28C |
PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER (preparing material for foundry moulds Fulltext... Hierarchy... Expanded...B22C 5/00)

|  | B28C |
Note(s) In this sub-class: the term "cement" and the expression "mixtures of cement with other substances" are to be understood to include plaster; the term "clay" is to be understood to include like ceramic compositions.

|  | B28C 1/00 |
Obtaining or preparing clay or shaping (chemical part Fulltext... Hierarchy... Expanded...C04B)

|  | B28C 1/00 |
Machines or methods for obtaining or processing clay (filtration in general Fulltext... Hierarchy... Expanded...B01D; separation of solids from solids Fulltext... Hierarchy... Expanded...B03, Fulltext... Hierarchy... Expanded...B07; by mining or quarrying Fulltext... Hierarchy... Expanded...E21C 41/00, Fulltext... Hierarchy... Expanded...E21C 47/00)

|  | B28C 1/02 |
· | for producing or processing clay suspensions (producing or processing suspensions in general Fulltext... Hierarchy... Expanded...B01)

|  | B28C 1/04 |
· · | Producing suspensions, e.g. by blunging

|  | B28C 1/06 |
· · | Processing suspensions

|  | B28C 1/08 |
· · · | Separating suspensions, e.g. for obtaining clay, for removing stones (filtration in general Fulltext... Hierarchy... Expanded...B01D; separation of solids from solids Fulltext... Hierarchy... Expanded...B03, Fulltext... Hierarchy... Expanded...B07)

|  | B28C 1/10 |
· | for processing clay-containing substances in non-fluid condition (clay slurries Fulltext... Hierarchy... Expanded...B28C 1/02)

|  | B28C 1/12 |
· · | Storing and conditioning in storage; Specially adapted storage spaces and devices for their filling or emptying (feeding clay to shaping apparatus Fulltext... Hierarchy... Expanded...B28B 13/00)

|  | B28C 1/14 |
· · | Apparatus specially adapted for homogenising, comminuting or conditioning clay in non-fluid condition or for separating undesired admixtures therefrom (processes involving conversion to a slurry Fulltext... Hierarchy... Expanded...B28C 1/02; conditioning in storage Fulltext... Hierarchy... Expanded...B28C 1/12; comminuting in general Fulltext... Hierarchy... Expanded...B02C; chemical features in eliminating iron or lime Fulltext... Hierarchy... Expanded...C04B)

|  | B28C 1/16 |
· · · | for homogenising, e.g. by mixing, kneading

|  | B28C 1/18 |
· · · | for comminuting

|  | B28C 1/20 |
· · · | for separating undesired admixed bodies

|  | B28C 1/22 |
· · · | combined with means for conditioning by heating, humidifying, or vacuum treatment

|  | B28C 3/00 - B28C 7/00 |
Mixing clay or cement with other materials (mixers in general Fulltext... Hierarchy... Expanded...B01F; concrete paving mixers combines with distributing devices Fulltext... Hierarchy... Expanded...E01C 19/00; machines for preparing mixtures of road-metal with bitumen Fulltext... Hierarchy... Expanded...E01C 19/10)

|  | B28C 3/00 - B28C 7/00 |
Note(s) In the following groups, the term "mixing" includes preliminary mixing, e.g. of some of the ingredients, final mixing, and agitating the mixture to prevent desegregation thereof.

|  | B28C 3/00 |
Machines or methods for mixing clay with other substances (producing clay suspensions Fulltext... Hierarchy... Expanded...B28C 1/02)

|  | B28C 5/00 |
Machines or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions (controlling the mixing apparatus and supplying the ingredients Fulltext... Hierarchy... Expanded...B28C 7/00)

|  | B28C 5/02 |
· | Apparatus without driven mechanical means effecting the mixing

|  | B28C 5/04 |
· · | Gravitational mixing; Mixing by intermingling streams of ingredients (ingredients projected by fluid pressure Fulltext... Hierarchy... Expanded...B28C 5/06)

|  | B28C 5/06 |
· · | the mixing being effected by the action of a fluid (in combination with driven mechanical means Fulltext... Hierarchy... Expanded...B28C 5/38)

|  | B28C 5/08 |
· | Apparatus with driven mechanical means affecting the mixing (in combination with the action of a fluid Fulltext... Hierarchy... Expanded...B28C 5/38)

|  | B28C 5/10 |
· · | Mixing in containers not actuated to effect the mixing

|  | B28C 5/12 |
· · · | with stirrers sweeping through the materials

|  | B28C 5/14 |
· · · · | the stirrers having motion about a horizontal or substantially horizontal axis

|  | B28C 5/16 |
· · · · | the stirrers having motion about a vertical or steeply inclined axis

|  | B28C 5/18 |
· · | Mixing in containers to which motion is imparted to effect the mixing

|  | B28C 5/20 |
· · · | rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers

|  | B28C 5/22 |
· · · · | with stirrers held stationary

|  | B28C 5/24 |
· · · · | with driven stirrers

|  | B28C 5/26 |
· · · | rotating about a vertical or steeply inclined axis during the mixing

|  | B28C 5/28 |
· · · · | without independent stirrers

|  | B28C 5/30 |
· · · · | with stirrers held stationary

|  | B28C 5/32 |
· · · · | with driven stirrers

|  | B28C 5/34 |
· · | Mixing on or by conveyers

|  | B28C 5/36 |
· · · | Endless-belt mixers

|  | B28C 5/38 |
· | Apparatus wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means

|  | B28C 5/40 |
· | Mixing apparatus specially adapted for preparing mixtures containing fibres

|  | B28C 5/42 |
· | Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport (vehicle aspects Fulltext... Hierarchy... Expanded...B60P)

|  | B28C 5/44 |
· | Apparatus specially adapted for drive by muscle power

|  | B28C 5/46 |
· | Arrangements for applying super- or sub-atmospheric pressure during mixing; Arrangements for cooling or heating during mixing

|  | B28C 7/00 |
Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture (feeding material in general Fulltext... Hierarchy... Expanded...B65G; proportioning in general Fulltext... Hierarchy... Expanded...G01F, Fulltext... Hierarchy... Expanded...G01G; controlling in general Fulltext... Hierarchy... Expanded...G05)

|  | B28C 7/02 |
· | Controlling the operation of the mixing apparatus

|  | B28C 7/04 |
· | Supplying or proportioning the ingredients

|  | B28C 7/06 |
· · | Supplying the solid ingredients, e.g. by means of endless conveyers or jigging conveyers

|  | B28C 7/08 |
· · · | by means of scrapers or skips

|  | B28C 7/10 |
· · · | by means of rotary members

|  | B28C 7/12 |
· · | Supplying or proportioning liquid ingredients

|  | B28C 7/14 |
· | Supply means incorporated in or mounted on mixers

|  | B28C 7/16 |
· | Discharge means