RAPID TRANSPORT

Dominion, Volume 28, Issue 167, 11 April 1935, Page 16

RAPID TRANSPORT

4 High-Speed Lift Service With Safety “FLYING START AND STOP” Transport between floors in a large building such as the Prudential Assurance Company’s new Wellington home is an important matter, and every provision must be made for rapid and safe transit. This has been done in the new Prudential building by the installation of two “Waygood-Otis” self-

levelling high-speed passenger lifts, each of which has a capacity of 16 persons, and will travel at a speed of 450 feet a minute. The method of control during both night and day is designed to eliminate lost time. During ordinary business hours, each lift car will be in charge of an attendant, and during these hours the lifts will operate on car switch control incorporating "flying stop” tea tore.

Iu view of the relative high speed of the ear, the driver needs ample time to perform stopping movements before the actual stopping, and to this end the driver initiates the stopping movement when the ear is within one floor of the desired stop. The use of this form of control assures accurate stops under all load conditions, and also speeds up the service by eliminating the need for slow-si>eed operation when approaching the various floors. After ordinary business hours the. traffic will be handled by one lift, which will operate on what is known as the “Collective Automatic System.” as distinct from the “Single Automatic System.” The “Collective” system is arranged to obviate the disadvantages of the “Siugle” system in that the car will stop to collect passengers at all floors at which buttons have been

pressed corresponding to the direction in which the car travelling. For instance, if the ear leaves an upper floor with passengers who have registered the ground floor it will stop during the down trip at ail floors at which intending passengers have registered dowu calls. If, during the down trip, a down call is registered from a floor above that from .which the car started the car will complete the downward journey, discharge the passengers. and then return to collect the calls registered above the starl in? point of the previous trip