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.
Wow; a high-speed serial data interface!
Comment by Don — December 4, 2007 @ 7:26 am
Is it like a series of tubes?
Comment by jayessell — December 4, 2007 @ 10:01 am
LOL-@ JSL
Comment by Stannous — December 4, 2007 @ 12:34 pm
No, this is a series of tubes: http://blog.modernmechanix.com.....age-tubes/
Comment by Charlie — December 4, 2007 @ 12:46 pm
No, this is a series of tubes: http://video.google.com/videop.....8132361295
Comment by jayessell — December 4, 2007 @ 1:37 pm
help needed,
we need the answer to the following,
we have a start point of 900m above sea level and a finishing point of 300m above sea level,
the start and finish are 3500m apart
we now fix a cable between
but we want to send a 250kilo weight down the cable.
to stop the weight crashing into the finishing point will need to raise the height of the finishing point so the weight will run out of steam
what height would the tower need to be ?
Comment by keith pearce — July 27, 2009 @ 6:51 am