Pulley System Speeds Data (Mar, 1937)
Pulley System Speeds Data
TO SPEED written messages and other data between buildings at Harvard University in Cambridge, Mass., Dr. Harry Rowe Mimno, assistant professor of physics, developed a mechanical carrier system operated by a motor driven rope-and-pulley.
Messages are placed in an aluminum cylinder and carried between buildings by the motivated rope-and-pulley system. Upon reaching its destination, the cylinder causes a red light to flash, informing office personnel that message is waiting.