|  | E |
SECTION E — FIXED CONSTRUCTIONS

BUILDING

|  | E21 |
MINING

|  | E21D |
SHAFTS; SINKING SHAFTS; GALLERIES; LINING GALLERIES

|  | E21D 1/00 - E21D 7/00 |
Shafts

|  | E21D 1/00 |
Sinking shafts

|  | E21D 1/02 |
· | by hand

|  | E21D 1/03 |
· | mechanically (Fulltext... Hierarchy... Expanded...E21D 1/08 takes precedence)

|  | E21D 1/04 |
· · | with grabs

|  | E21D 1/06 |
· · | with shaft-boring cutters (drilling machines Fulltext... Hierarchy... Expanded...E21B, Fulltext... Hierarchy... Expanded...E21C)

|  | E21D 1/08 |
· | while moving the lining downwards

|  | E21D 1/10 |
· | Preparation of the ground

|  | E21D 1/12 |
· · | by freezing

|  | E21D 1/14 |
· · · | Freezing apparatus

|  | E21D 1/16 |
· · | by petrification (grouting anchoring-bolts Fulltext... Hierarchy... Expanded...E21D 20/02)

|  | E21D 3/00 |
Raising shafts, i.e. working upwards from the bottom

|  | E21D 5/00 |
Lining shafts

|  | E21D 5/01 |
· | using prefabricated lining lowered into a hole filled with liquid or viscous mass

|  | E21D 5/012 |
· | use of fluid-tight or anti-friction material on outside of, or between, lining layers

|  | E21D 5/016 |
· | Bearer curbs

|  | E21D 5/02 |
· | with wood (Fulltext... Hierarchy... Expanded...E21D 5/01, Fulltext... Hierarchy... Expanded...E21D 5/012, Fulltext... Hierarchy... Expanded...E21D 5/016 take precedence)

|  | E21D 5/04 |
· | with brick, concrete, stone, or similar building materials (Fulltext... Hierarchy... Expanded...E21D 5/01, Fulltext... Hierarchy... Expanded...E21D 5/012, Fulltext... Hierarchy... Expanded...E21D 5/016 take precedence)

|  | E21D 5/06 |
· | with iron or steel (Fulltext... Hierarchy... Expanded...E21D 5/01, Fulltext... Hierarchy... Expanded...E21D 5/012, Fulltext... Hierarchy... Expanded...E21D 5/016 take precedence)

|  | E21D 5/08 |
· · | in the form of profiled parts

|  | E21D 5/10 |
· · | in the form of tubbing

|  | E21D 5/11 |
· | with combinations of different materials, e.g. wood, metal, concrete (Fulltext... Hierarchy... Expanded...E21D 5/01, Fulltext... Hierarchy... Expanded...E21D 5/012, Fulltext... Hierarchy... Expanded...E21D 5/016 take precedence)

|  | E21D 5/12 |
· | Accessories for making shaft linings, e.g. suspended cradles, shutterings

|  | E21D 7/00 |
Shaft equipment, e.g. timbering within the shaft

|  | E21D 7/02 |
· | Arrangement of guides for cages in shafts; Connection of guides for cages to shaft walls (guides or shoes fixed on cages Fulltext... Hierarchy... Expanded...B66B)

|  | E21D 9/00 - E21D 13/00 |
Galleries

|  | E21D 9/00 |
Driving galleries, e.g. using ripping machines (driving-machines Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...E21C 25/00-E21C 35/24, especially Fulltext... Hierarchy... Expanded...E21C 27/00; drift boring Fulltext... Hierarchy... Expanded...E21C 19/00)

|  | E21D 9/02 |
· | Driving inclined galleries

|  | E21D 9/04 |
· | Driving galleries through loose materials

|  | E21D 11/00 |
Lining galleries, e.g. supporting linings

|  | E21D 11/02 |
· | with wood

|  | E21D 11/03 |
· · | using timber-setting machines

|  | E21D 11/04 |
· | with building materials

|  | E21D 11/05 |
· · | using compressible insertions

|  | E21D 11/06 |
· · | with bricks

|  | E21D 11/07 |
· · · | using brick-laying machines

|  | E21D 11/08 |
· · | preformed concrete or other lagging slabs

|  | E21D 11/10 |
· · | with concrete cast in situ; Shuttering or other equipment adapted therefor

|  | E21D 11/12 |
· · | Temporary supports for use during building; Accessories

|  | E21D 11/14 |
· | with iron or steel, e.g. with auxiliary parts of other materials, supporting rings

|  | E21D 11/16 |
· · | Linings specially shaped for galleries of irregular cross-section (road-head supports connected to working-face supports Fulltext... Hierarchy... Expanded...E21D 15/00, Fulltext... Hierarchy... Expanded...E21D 17/00, Fulltext... Hierarchy... Expanded...E21D 23/00)

|  | E21D 11/18 |
· · | Arch members

|  | E21D 11/20 |
· · · | Special cross-sections, e.g. corrugated

|  | E21D 11/22 |
· · · | Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure

|  | E21D 11/24 |
· · · | Knuckle joints or links between arch members

|  | E21D 11/26 |
· · · | Shoes for connecting arch members to longitudinal struts

|  | E21D 11/28 |
· · | Longitudinal struts

|  | E21D 11/30 |
· · | Bases for lower arch members (for props Fulltext... Hierarchy... Expanded...E21D 15/54)

|  | E21D 11/32 |
· · | Laggings

|  | E21D 11/34 |
· · | Joints between vertical props and horizontal top bars (end caps forming part of the props Fulltext... Hierarchy... Expanded...E21D 15/54)

|  | E21D 13/00 |
Driving or making large working spaces, e.g. for pumps, for loading (driving-machines Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...E21C 25/00-E21C 35/24)

|  | E21D 13/02 |
· | Methods

|  | E21D 13/04 |
· | Special equipment; Accessories

|  | E21D 15/00 - E21D 23/00 |
Working-face supports

|  | E21D 15/00 |
Props (in the building art Fulltext... Hierarchy... Expanded...E04G 25/00); Chocks

|  | E21D 15/02 |
· | Non-telescopic props

|  | E21D 15/04 |
· · | with wooden prop parts joined by double conical connectors

|  | E21D 15/06 |
· · | with parts joined by a lock, with or without slight axial adjustability

|  | E21D 15/08 |
· · · | with toggle joint connection

|  | E21D 15/10 |
· · · | with dog-clutch or pin-and-hole connection

|  | E21D 15/12 |
· · · | with locking devices located near head or foot

|  | E21D 15/14 |
· | Telescopic props (general means for fixing telescopic parts together Fulltext... Hierarchy... Expanded...F16B)

|  | E21D 15/15 |
· · | Means counteracting entry of dirt; Built-in cleaning devices

|  | E21D 15/16 |
· · | with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure

|  | E21D 15/18 |
· · · | with one part resting on a supporting medium, e.g. rubbish, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium upon excessive pressure

|  | E21D 15/20 |
· · · | with pawl, pin, cross-piece, etc. engaging with ratchet teeth, notches, holes, etc. spaced apart at intervals

|  | E21D 15/22 |
· · · | with member, pin, cross-piece, etc. ruptured, sheared through, or permanently deformed upon excessive pressure

|  | E21D 15/24 |
· · · | with axial screw-and-nut, rack-and-worm, or like mechanism

|  | E21D 15/26 |
· · · · | with screw, worm, etc. not self-locking but normally prevented from rotation by friction members which slip upon excessive pressure

|  | E21D 15/28 |
· · | with parts held relatively to each other by friction or gripping, e.g. using wedges

|  | E21D 15/30 |
· · · | by means expanded or contracted by pressure applied through the medium of a fluid or quasi-fluid, e.g. rubber

|  | E21D 15/32 |
· · · | by a deformable collar

|  | E21D 15/34 |
· · · | by axially-moving balls, rollers, etc.

|  | E21D 15/36 |
· · · | by a tiltable collar surrounding one or both parts

|  | E21D 15/38 |
· · · | with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations

|  | E21D 15/40 |
· · · | Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted

|  | E21D 15/42 |
· · · | with special parts to influence the friction

|  | E21D 15/43 |
· · · | Details of wedges (friction linings or pads Fulltext... Hierarchy... Expanded...E21D 15/42)

|  | E21D 15/44 |
· · | Hydraulic, pneumatic, or hydraulic-pneumatic props

|  | E21D 15/45 |
· · · | having closed fluid system, e.g. with built-in pumps or accumulators

|  | E21D 15/46 |
· · | with load-measuring devices; with alarm devices

|  | E21D 15/48 |
· | Chocks or the like

|  | E21D 15/50 |
· | Component parts or details of props (Fulltext... Hierarchy... Expanded...E21D 15/43, Fulltext... Hierarchy... Expanded...E21D 15/58, Fulltext... Hierarchy... Expanded...E21D 15/60 take precedence)

|  | E21D 15/502 |
· · | Prop bodies characterised by their shape, e.g. of specified cross-section

|  | E21D 15/51 |
· · | specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves

|  | E21D 15/52 |
· · | Extensible units located above or below standard props

|  | E21D 15/54 |
· · | Details of the ends of props (for permitting step-by-step movement Fulltext... Hierarchy... Expanded...E21D 23/06)

|  | E21D 15/55 |
· · · | of prop heads

|  | E21D 15/56 |
· · | Details of locks of telescopic props

|  | E21D 15/58 |
· | Devices for setting props

|  | E21D 15/582 |
· · | for mechanical props

|  | E21D 15/59 |
· · | for hydraulic, pneumatic, or hydraulic-pneumatic props

|  | E21D 15/60 |
· | Devices for withdrawing props or chocks

|  | E21D 17/00 |
Caps for supporting mine roofs

|  | E21D 17/01 |
· | characterised by the shape of the cap, e.g. of specified cross-section

|  | E21D 17/02 |
· | Cantilever extension or similar protecting devices

|  | E21D 17/022 |
· · | Auxiliary devices for temporary support of roof-supporting beams whilst assembling

|  | E21D 17/03 |
· · | Brackets for roof-supporting bars

|  | E21D 17/04 |
· · | for use in longwall working

|  | E21D 17/05 |
· · · | hydraulically extensible

|  | E21D 17/054 |
· · · | hydraulically pivotable

|  | E21D 17/06 |
· · | for use in drifting galleries

|  | E21D 17/08 |
· · | Cap joints for obtaining a coal-face free of pit-props

|  | E21D 17/082 |
· · · | of sliding type

|  | E21D 17/086 |
· · · | of articulated type

|  | E21D 17/10 |
· | Details of mine caps for engaging the tops of pit-props, with or without retaining-plates; Retaining-plates

|  | E21D 19/00 |
Working shields; Protective covers for working space

|  | E21D 19/02 |
· | for use in longwall working

|  | E21D 19/04 |
· | for use in drifting galleries

|  | E21D 20/00 |
Setting anchoring-bolts

|  | E21D 20/02 |
· | with provisions for grouting

|  | E21D 21/00 |
Anchoring-bolts for roof, floor, or shaft-lining protection

|  | E21D 21/02 |
· | having means for indicating tension (screwed connections specially modified for indicating tensile load Fulltext... Hierarchy... Expanded...F16B 31/02)

|  | E21D 23/00 |
Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyers, mining machines, or guides therefor (shifting of mine conveyers per se at the working face Fulltext... Hierarchy... Expanded...E21F 13/08)

|  | E21D 23/04 |
· | Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props, means for counteracting lateral sliding on inclined floor (Fulltext... Hierarchy... Expanded...E21D 23/14 takes precedence)

|  | E21D 23/06 |
· · | Special mine caps or special tops of pit-props for permitting step-by-step movement

|  | E21D 23/08 |
· | Advancing mechanisms (Fulltext... Hierarchy... Expanded...E21D 23/16 takes precedence)

|  | E21D 23/10 |
· · | with advancing-devices separate from the supporting construction

|  | E21D 23/12 |
· | Control, e.g. using remote control (Fulltext... Hierarchy... Expanded...E21D 23/16 takes precedence)

|  | E21D 23/14 |
· · | Effecting automatic sequential movement of supports, e.g. one behind the other

|  | E21D 23/16 |
· | Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices

|  | E21D 23/18 |
· · | of advancing mechanisms

|  | E21D 23/20 |
· · · | for sequential movement, e.g. one behind the other

|  | E21D 23/22 |
· · · | incorporated in mine caps

|  | E21D 23/24 |
· · · | the advancing mechanisms being separate from the supporting construction

|  | E21D 23/26 |
· · | Hydraulic or pneumatic control