Classroom on demand

Welcome to Classroom on demand, your source for educational materials related to the vertical transportation industry. This site represents the knowledge and expertise of the best engineers and mechanics in the elevator industry, and will help those new to the elevator industry learn about the basic workings of elevator systems, and also will serve as a reference for people with more experience.

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1 Glossary

AstragalRubber molding on the leading edge of car and hoistway doors. It is fur...
ColumnThe vertical sections of the car's entrance frame.
Door GibsDevices at the bottom of horizontal sliding door panels which stick int...
Door HangerRolling assembly fastened to the top of the door panel. Supports and...
Door HeaderA formed heavy-gauge steel member located in a horizontal position on...
Door InterlockPrevents the operation on the machine unless the hoistway door is ...
Door OperatorA machine mounted on the car directly above the opening which drive...
Door PanelA portion of the door or gate which covers the opening and moves to un...
Doors - BipartingProtective devices for hoistway openings of freight elevators c...
Doors - Center OpeningA door type which consists of two horizontal sliding panel...
Doors - Horizontal SlidingEntrance protection for both car and hoistway (usually...
Dust Covers (Hanger Cover)Sheet metal cover that protects the door hangar track ...
Entrance AssemblyCloses the hoistway enclosures openings that are normally used ...
Gate - Double Blade A vertical sliding counterweighted device used to provide en...
Gate - Slingle Blade A vertical sliding counterweighted device used to provide e...
Hanger RollersRollers (two per panel) from which horizontal door panels are susp...
Hanger TrackThe track through which the hanger rollers are guided.
Head JambThe top horizontal piece of an entrance door frame which connects the s...
HeaderFormed steel positioned horizontally in the hoistway to provide structural...
Hoistway DoorThe side of the elevator door visible in the lobby or hallway which...
InterlockA device that provides a physical lock for hoistway door and gives an e...
Sight GuardA strip of sheet metal mounted vertically on the leading edge of side...
SillThe threshold of a door opening. Most sills include grooves to guide the bo...
Single Speed DoorDoor type with one panel which slides to one side, behind the r...
Strike JambColumn against which a horizontal sliding car door closes.
TransomA panel or panels above an entrance used to close the hoistway enclosure.

2 Basic Elevator Design

OpeningsIt is important to understand the difference between openings and landin...

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