Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Side-by-side terminus shafts; e.g. – truss
Patent
1976-11-05
1978-02-21
Purser, Ernest R.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Side-by-side terminus shafts; e.g., truss
52729, 52730, E04C 302
Patent
active
040744981
ABSTRACT:
Plywood web members interconnect a pair of chord members by means of glued tongue and groove joints. There are two layers of said web members in face to face relation wherein tongues on the adjacent face veneers occupy a common intermediate groove in each chord member. Tongues on the outer face veneers are bent outward by splayed outer grooves in each chord member to form a self-locking dovetail type joint which holds the members together in assembled relation without external clamps while the glue is setting.
REFERENCES:
patent: 1377891 (1921-05-01), Knight
patent: 2981669 (1961-04-01), Brand et al.
Keller James R.
Nickerson William A.
Friedman Carl D.
Purser Ernest R.
Schermerhorn Lee R.
Wm. A. Nickerson & Co., Ltd.
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