Early Elevator Indicator Revisited

Sponsored

The February 2016 issue of ELEVATOR WORLD includes an article, “Paul Schuyler Van Bloem,” written by Dr. Lee Gray in response to a research request from Mark A. Goldstein of New Jersey. In addition to sounding bells, the indicator would light up on the arrival of the elevator. Goldstein installed some lights in the back of the indicator and witnessed a beautiful display of color, confirming Van Bloem’s statement in U.S. Patent No. 1,592,399 ( July 13, 1926):

“Up-and-down signals usually are differently colored, the up signal being usually white, although green frequently is used, and the down signal being usually red, although other colors are sometimes used.”

Related Tags

Since 1953, Elevator World, Inc. has been the premier publisher for the global vertical transportation industry. It employs specialists in Mobile, Alabama, and has technical and news correspondents around the world.

Sponsored

Elevator World | August 2012 Cover

Sponsored
Sponsored
Elevator-World---Fallback-Image

Parlez-Vous Français?

Elisha Otis’ “Improved Elevator”

Elisha Otis’ “Improved Elevator”

Smart Elevators Spark Innovation 

Smart Elevators Spark Innovation 

The Most Important Escalator Safety Device

The Most Important Escalator Safety Device

Mountains, City and Sea

Mountains, City and Sea

Abolishing-Pit-and-Head-room-Its-Possible-Now-More-than-Ever-Before

Abolishing Pit and Head-room: It’s Possible Now More than Ever Before

Remote-Monitoring-and-Supervision-System

Remote Monitoring and Supervision System

A Procedure To Estimate Elevator Energy Consumption Using Traffic Simulation

A Procedure To Estimate Elevator Energy Consumption Using Traffic Simulation

Elevator World | August 2012 Cover

Sponsored
Sponsored