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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I<br />
Ibel, Justus<br />
250,921 Dec. 13, 1881 *Timber tied-arch set within a tied-arch. <strong>No</strong> diagonals. Inserted tied-arch<br />
attached to verticals.<br />
Irelan, William<br />
190,437 May 8, 1877 Howe truss configuration (compression diagonals). Sloped top chord.<br />
Mid-height struts parallel to sloping top chord.<br />
205,799 Jul. 9, 1878 Howe truss configuration. Redundant timber and metal-rod, crossed<br />
diagonals. Wood vertical from diagonal intersection to top chord.<br />
220,382 Oct. 7, 1879 Pratt truss configuration. Redundant compression and tension crossbracing<br />
in panels. Improvement on Jul. 9, 1878 patent.<br />
254,978 Mar. 14, 1882 Pratt truss configuration. Sloped end posts. Timber top chord. Single<br />
web diagonals. Stress-equalizing devices in top and bottom chords.<br />
307,770 <strong>No</strong>v. 11, 1884 Eccentric “self adjusting” pin connection <strong>for</strong> trusses.<br />
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