File:National Historic Mechanical Engineering Landmark plaque for Pawtucket Gatehouse hydraulic turbine; Lowell, MA; 2012-05-19.JPG

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A National Historic Mechanical Engineering Landmark plaque for the Pawtucket Gatehouse hydraulic turbine. Granted in 1983 by the American Society of Mechanical Engineers. Located on the northwest side of the Pawtucket Gatehouse near the southeast end of the O'Donnell Bridge in Lowell, Massachusetts.

The plaque reads:

NATIONAL HISTORIC MECHANICAL ENGINEERING LANDMARK PAWTUCKET GATEHOUSE HYDRAULIC TURBINE 1847

THE FIRST FRANCIS INWARD-FLOW WATER TURBINE PLACED IN SERVICE AND THE OLDEST IN EXISTENCE. THE FRANCIS TURBINE, DEVELOPED FROM THE HOWD, IS THE MOST WIDELY USED TURBINE IN SITUATIONS INVOLVING MEDIUM HEAD AND LARGE FLOW RATES. THIS TURBINE WAS DESIGNED TO LIFT, BY MEANS OF A BELT DRIVE, THE TEN HEAD GATES IN THE PAWTUCKET GATEHOUSE, WHICH CONTROL THE FLOW OF WATER FROM THE MERRIMACK RIVER INTO THE NORTHERN CANAL OF THE LOWELL HYDRAULIC CANAL SYSTEM. IT WAS USED UNTIL 1923, WHEN SUPERSEDED BY ELECTRIC-MOTOR DRIVE. 

   DESIGNER AND INVENTOR: JAMES B. FRANCIS (1815-1892), CHIEF

ENGINEER OF THE PROPRIETORS OF LOCKS AND CANALSFROM 1837 TO 1885.

THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS - 1985
Date
Source Own work
Author Emw
Camera location42° 38′ 57.81″ N, 71° 19′ 49.77″ W  Heading=135° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current04:14, 3 September 2012Thumbnail for version as of 04:14, 3 September 20124,608 × 3,456 (5.26 MB)Emw (talk | contribs)

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