Photo provided courtesy of the United States Library of Congress.
14. VIEW OF OPERATING VALVE TO HYDRAULIC CYLINDER,...
14. VIEW OF OPERATING VALVE TO HYDRAULIC CYLINDER, SHOWING CAR OPERATING ROPE SHELVE, FIXED SHEAVES OF CYLINDER JUST VISIBLE BEHIND AIR CHAMBER PIPE; RISING THROUGH FLOOR ARE WATER DISCHARGE PIPE TO SEWER (LEFT) AND WATER SUPPLY FROM STREET MAIN (RIGHT); WATER CONSUMPTION METER MOUNTED TO WALL ABOVE OPERATING SHELVE - 72 Marlborough Street, Residential Hydraulic Elevator, Boston, Suffolk County, MA
4 x 5 in.
Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey
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