Quick operating single pull hatch covers installed on Hatch No 1 on forecastle deck of USNS Pvt FrancisX.McGraw; design and engineering of installation prepared by MacGregor-Comarain, Inc, New York City; cover sections mounted on four eccentric rollers; half turn of eccentric wheel lifts covers off gaskets; two grooved balancing rollers effect bias which will cause cover to come to vertical when stowed.
MacGregor watertight steel hatch covers installed on cargo ship
Mar Eng Shipg Rev
Marine Engineering and Shipping Review ; 55 , n 10
1950
3 pages
Aufsatz (Zeitschrift)
Englisch
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