Freight car hand brakes - 8
        
        
          32
        
        
          33
        
        
          
            Drop-shaft Hand Brakes
          
        
        
          From the earliest use of hand brakes, the need to protect the
        
        
          brake wheel on gondolas and flat cars was apparent. Both tilting-
        
        
          handle and drop-shaft types were developed, with the latter
        
        
          quickly emerging as the most practical and economical. Drop-
        
        
          shaft hand brakes continue in use today. In the early versions
        
        
          the chain was wrapped around a square sleeve through which
        
        
          the brake shaft was able to slide vertically (31 and 32). Modern
        
        
          drop-shaft hand brakes incorporate a geared mechanism such as
        
        
          those manufactured by Superior (33) and Superior (34).
        
        
          32. A Ureco “stem-
        
        
          winder” drop-brake
        
        
          shaft on a USRA flat car
        
        
          from the late teens.
        
        
          33. Superior drop-shaft
        
        
          hand brakes from the
        
        
          1940s.
        
        
          34. Universal geared
        
        
          drop-shaft hand brakes in
        
        
          use since the 1970s.
        
        
          35. Barber tilting hand
        
        
          brake staff.
        
        
          34
        
        
          35
        
        
          
            Tilting Hand Brakes
          
        
        
          Gondola cars with drop ends presented a special challenge to
        
        
          manufacturers of hand brakes. Both the Barber type manufac-
        
        
          tured by Standard Car Truck Co. (35) and the Feasible Flexible
        
        
          model manufactured by U.S. Metal Co. (36) were promoted
        
        
          prior to 1920, but may have survived on specialty equipment
        
        
          for decades. The tilting hand brake illustrated in figure 37 was
        
        
        
        
          MRH-Nov 2013