Occasional Electronic Publication No. 1 - Society for Industrial ...

Indefinable and One-of-a-kind Fanciful Trusses
Loomis 1892: Web of intersecting circles, plus suspension cable.
Eddy 1893: Suspension cable with superimposed bowstring with a cable top-chord.
Subgroup of Indefinable Trusses with a Missing or Discontinuous Top Chord
Lanergan 1850: Three overlapping tied arches with radial verticals.
Thayer 1854: Multiple overlapping and interlocking timber arches.
Truesdell 1856: Lattice with inlaid cross-bracing having a St. Andrew's cross pattern.
Bruce 1862: Overlapping king-post design. Cambered bottom chord.
Tracy 1871: Warren truss, with a stiffening truss, which dips down at mid-span, secured above the upper
chord.
Kersten 1884: Undulating bottom chord. Series of contiguous inverted king-posts.
Marks 1886: Crossed timber diagonals. Verticals and bottom chord are rods.
Knudson 1887: Series of overlapping king-posts. Balance scale for weighing traffic.
Webb & Haag 1890: Stacked Warren web configurations. Made from bent railroad rails.
Semmes 1897: Cambered bottom chord. Single mid-height chord. Non-symmetrical pattern of timber
diagonals. Vertical rods.
John Yandell and Joseph Johnson, Patent No. 11,818 (1854)
John Boles, Jr., Patent No. 47,920 (1865)
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