— the side of an escalator
extending above the steps. It includes skirt
panels, interior panels, decks and handrails. Brake
— an electro-mechanical
device used to prevent the elevator from moving
when the car is at rest and no power is applied
to the hoist motor. On some types of control, it
also stops the elevator when power is removed
from the hoist motor.
— moving member(s) of a
brake, lined with friction material which, when
in contact with the brake drum, holds the
elevator at floor level. On some types of
control, it will stop the elevator when power is
removed from the hoist motor.
— a device, usually of
carbon or graphite composition, used to connect
a circuit with the rotating or moving portion of
a DC motor, generator or other electrical
device. It carries current to and from the
non-moving parts of connections.
— in contract service, a
customer request which requires a check of an
elevator other than the regularly scheduled
— the load-carrying unit,
including its platform, frame, enclosure, and
car door or gate.
— a set of weights roped
directly to the elevator car of a winding-drum
type installation. In practice, this weight is
equal to approximately 70 percent of the car
— a panel mounted in the car
containing the car operating controls, such as
call register buttons, door open and close,
alarm emergency stop and whatever other buttons
or key switches are required for operation.
top inspection station
— a control panel on top of
an elevator car which, when activated, removes
the car from normal service and allows the car
to run at inspection speed from the car top
— a system of regulations
pertaining to the design, manufacture,
installation and maintenance of elevators,
dumbwaiters, escalators and moving walks. The
most widely recognized and used is
ANSI A-17.1, sponsored by the National Bureau of
Standards, the American Institute of Architects,
The American Society of Mechanical Engineers,
and published by ASME. It has been adopted by
many states. Some states and cities have written
their own codes, most of which are based on the
— a device, or group of
devices, which serves to control, in a
predetermined manner, the apparatus to which it
— a weight which
counterbalances the weight of an elevator car
plus approximately 40 percent of the capacity
— the outermost lining of a
— an electric current
flowing in one direction only and substantially
constant in value.
— any type of mechanical
lock designed to prevent the opening of a
hoistway door from the landing side.
— a motor-driven device
mounted on the car which opens and closes the
— the power unit which
applies the energy necessary to raise and lower
an elevator, material lift, or dumb waiter car
or to drive an escalator, an inclined lift or a
— the grooved wheel of a
traction-type hoisting machine over which the
hoist ropes pass, and by which motion is
imparted to the car and counterweight by the
— a power-driven, inclined,
continuous stairway used for raising or lowering
— a device or group of
devices which provide: (1) a signal for
immediate recall to a designated landing in
order to remove cars from normal use, and (2) to
permit special operation for firefighters or
other authorized emergency personnel.
— a traction machine in
which the power from the motor is transmitted to
the drive sheave through reduction gears.
— a type of elevator
hoisting machine on which the hoist ropes pass
over a traction drive sheave which is an
integral part of the armature. Called gearless
because no geared reduction unit is utilized.
— an electromechanical
device that converts mechanical energy to
electrical energy (usually direct current).
— (1) a mechanical speed
control mechanism. For elevator, it is a
wire-rope driven centrifugal device used to stop
and hold the movement of its driving rope. This
initiates the activation of the car safety
device. It opens a switch which cuts off power
to the drive motor and brake if the car travels
at a preset overspeed in the down direction.
Some types of governors will also open the
governor switch and cut off power to the drive
motor and brake if the car overspeeds in the up
direction. (2) on escalators, a direct-driven
centrifugal device which, when activated by
overspeed, cuts off power to the drive motor and
— a wire rope attached to an
elevator car frame that drives the governor and,
when stopped by the governor, initiates setting
of the car safety.
— steel T-section with
machined guiding surfaces installed vertically
in a hoistway to guide and direct the course of
travel of an elevator car and elevator
— a corridor mounted signal
light indicating than an elevator car is
approaching that landing and the direction in
which the car is to travel.
— (1) the moving handhold
provided for escalator passengers which moves
over the top of the balustrade and newels; (2) a
railing serving as a support.
— a guard, usually made of
rubber, that fits over the outside of the
handrail at a point where the handrail enters or
leaves the balustrade; it is designed to keep a
person's fingers out of the handrail opening.
— a shaftway for the travel
of one or more elevators, dumbwaiters or
material lifts. It includes the pit and
terminates at the underside of the overhead
machinery space floor or grating, or at the
underside of the roof where the hoistway does
not penetrate the roof.
— a power elevator where the
energy is applied, by means of a liquid under
pressure, in a cylinder equipped with a plunger
— a scaled mechanical
drawing showing dimensioned plan views and
elevations of an elevator hoistway and machine
room to indicate space conditions, pertinent
dimensions, sizes and location of components of
— the movement of an
elevator toward the landing sill when it is
within the leveling zone. When the word leveling
is used, the inference is that the process of
attaining a level or stop position (the platform
level with the landing sill) is performed
— the space in which the
driving machine for an elevator or group of
elevators, dumbwaiter, escalator or group of
escalators is located.
(car) guide rails
— steel T-sections with
machined guarding surfaces installed vertically
in a hoistway to guide and direct the course of
travel of an elevator car.
— a part of an escalator
machine. It is actuated by centrifugal force and
trips a switch when the motor speed has
increased 20 percent over its rated name plate
— inspections, tests,
adjustments, cleaning and similar activities
carried out on elevator and escalator equipment
with the intention of preventing malfunctions
from occurring during operation. It is designed
to keep equipment in proper operating order and
is done on a schedule basis. It is also referred
to as schedule maintenance.
— an electric device that is
designed to interpret input conditions in a
prescribed manner and after specified conditions
are met, to respond and cause contact operation
or create change in associated electric control
— guide shoes which use
rollers that rotate on guide rails rather than
sliding on the rails.
— a wheel mounted in
bearings and having one or more grooves over
which a rope or ropes may pass.
— a detailed itemized
description of the plans, materials, dimensions
and all other requirements proposed for the
installation of the equipment.
— the moving platform on
which an escalator passenger rides.
— controls on the top of the
car used by an elevator constructor to operate
the car at inspection speed. It provides a means
of operating an elevator from on top of the car
at slow speed during adjustment, inspection,
maintenance and repair.
— an electric machine in
which the friction between the hoist ropes and
the machine sheave is used to move the elevator
— a cable made up of
electric conductors which provides electrical
connection between an elevator or dumbwaiter
car, or material lift, and a fixed outlet in the
hoistway or machine room.