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A Vertical Sheave and Toothed Cogs

A Vertical Sheave and Toothed Cogs

This vertical sheave, and the toothed cogs, are part of the water brake assembly. The water brake was used to control the rate of descent when rail cars moving down the slope were heavier than the weight of rail cars moving up the slope. Engine House No. 6 is listed on the National Register of Historic Places, as part of the Allegheny Portage Railroad National Historic Site.
Galleries: Allegheny Portage Railroad, Machinery
Keywords: allegheny portage railroad, cogs, engine, engine house, gallitzin, pennsylvania, sheave, steam-powered engine, vertical sheave, water brake
Photo Location: Allegheny Portage Railroad National Historic Site, Pennsylvania
Photographer: Dr. Roy Winkelman
Date of Photo: 11/25/2011
Device Make: Canon
Device Model: Canon EOS 5D Mark II
Original Dimensions: 5467×3545
Picture Orientation: Landscape
GPS Coordinates: 40°27'22.18"N 78°33'01.88"W
Picture Number: 15810