Occasional Electronic Publication No. 1 - Society for Industrial ...
Occasional Electronic Publication No. 1 - Society for Industrial ...
Occasional Electronic Publication No. 1 - Society for Industrial ...
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Daigle, Marcelin<br />
332,058 Dec. 8, 1885 *Sliding retractable drawbridge. Cable-stayed beams. Labeled<br />
“bridge.”<br />
Dandridge, Alexander<br />
595,906 Dec. 21, 1897 *Suspension bridge. Labeled “bridge.”<br />
Davenport, Joseph<br />
72,611 Dec. 24, 1867 *Tied arch. Latticed arch chord. Radial web suspension rods support<br />
bridge deck.<br />
82,388 Sep. 22, 1868 Bowstring truss. Latticed arch chord. Tension diagonals at third panel<br />
point supplement horizontal tie. Cross-braced radial ties.<br />
Davidson, James<br />
605,474 Jun. 14, 1898 Double-intersection Warren truss variation. Third chord at mid-height.<br />
Fish-plate connections throughout.<br />
Davies, Robert<br />
90,562 May 8, 1877 Double end-posts and end-tie diagonals to protect truss from impact.<br />
Whipple trapezoidal truss configuration shown.<br />
Davis, Benjamin<br />
143,125 May 26, 1873 Bowstring truss. Verticals plus radiating struts from mid-span<br />
of bottom chord.<br />
311,064 Jan. 20, 1885 *Cantilevered bridge. Radiating set of cables extend from top of center<br />
mast to sloping booms. Vertical cables from booms hold roadbed.<br />
Intriguing cable-stayed variation.<br />
Davis, Nathan<br />
574,887 Jan. 12, 1897 King-post truss. Deck truss created from an I-beam that has been slit<br />
longitudinally and the bottom flange heated and drawn out to create the<br />
sloped bottom chord.<br />
Denmead, Edward & Wendel Bollman (Patapsco Bridge & Iron Works, Baltimore, Md.)<br />
78,073 May 19, 1868 *Method <strong>for</strong> securing verticals to bottom chord with cushioned clamps.<br />
Labeled “truss bridge.”<br />
Dennis, John<br />
319,798 Jun. 9, 1885 Howe truss configuration. Curved upper chord. Vertical ties are radial.<br />
Single diagonal struts in each panel. Deck bridge with triangular<br />
webbing above the truss to support the deck. Labeled “railway bridge.”<br />
Densmore, Lyman<br />
188,107 Mar. 6, 1877 Howe truss configuration. Timber top chord and crossed diagonals.<br />
Number of metal rods used in successive panels of bottom chord<br />
increase toward mid-span.<br />
Derr, John<br />
198,580 Dec. 25, 1877 Heel detail <strong>for</strong> timber trusses. Labeled “through-brace bridge.”<br />
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