[PRCo] SLPS/SHRT/PTC/MUNI PCC Question

[Herb Brannon]

For those who have a copy of PCC-From Coast to Coast handy. Take a look at
the section on St Louis Public Service Co.and the 1600s and 1700s in
particular. The SLPS 1600-series and 1700-series PCCs have a small device
mounted on the roof just back from the top of the destination sign. It
appears to have a bracket in the center and is made from a tube shaped piece
of metal, attached to the bracket and extending to both the right and left
sides of the car roof. I can find no mention of this device in any of my
books. When SLPS sold their cars to Shaker Heights Rapid Transit,
Philadelphia Transportation Co and the San Francisco Municipal Railway the
device was missing when the cars arrived in their new homes. Does anyone
know the purpose of this device?
-- 
Herb Brannon
In Cuyahoga Valley National Park