Ships – Building – Canal and ferry boats
Patent
1978-04-24
1980-07-29
Kazenske, Edward R.
Ships
Building
Canal and ferry boats
114 65R, 114 79W, B63B 300
Patent
active
042143322
ABSTRACT:
A method of constructing a welded metal skin boat hull includes forming a framework from transverse and transom frames connected to a margin plate and to a keel and stem assembly, and adjustably bolting to the frames and connecting together, as appropriate, longitudinal and transom stringers, outer surfaces of which are spaced outwardly from frame outer surfaces. Spacing of the longitudinal stringers on the frames divides the hull exterior into narrow longitudinal, non-compound curved regions, corresponding longitudinal hull skin panels being formed from flat sheets to bridge adjacent stringer pairs. Skin panel edges are clamped to corresponding stringers by external fairings adjustably bolted to the stringers, the bottom fairings being shaped as liftstrakes. A transom plate is tackwelded or clamped to the transom stringers. Frames, skin panels and fairings, are adjusted to realign the hull to specifications before welding. After tightening all such adjustable connections, longitudinal fairing-skin panel intersections are externally fillet welded and abutting skin panels and transom edges are welded together. An epoxy-aluminum compound smooths the fairing-skin panel intersection welds. To complete construction of a basic hull, the skin panels are welded to the stringers and the stringers to the frames from inside the hull. A corresponding welded metal skin boat hull is provided.
REFERENCES:
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patent: 1810097 (1931-06-01), Wheeler
patent: 2165545 (1939-07-01), Grant
patent: 2412242 (1946-12-01), Beaud
patent: 2644418 (1953-07-01), Allegro
patent: 3398496 (1968-08-01), Mischke
patent: 3429088 (1969-02-01), Katzman
patent: 3776168 (1973-12-01), Weeks
patent: 3931919 (1976-01-01), Gerber et al.
ARES, Inc.
Douglas Winston H.
Fowler Allan R.
Kazenske Edward R.
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