Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Superimposed three-dimensional units
Patent
1975-11-28
1977-01-25
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Superimposed three-dimensional units
52655, 182178, 403 49, E04H 1200, E04G 700
Patent
active
040043932
ABSTRACT:
A shoring or scaffold for construction, maintenance and other work, using stacked scaffold sections of a demountable type and having a heighth adjusting construction is provided. Each section has a pair of spaced-apart end frames that are demountably cross-connected with respect to each other and the end frames of upper and lower sections have a telescopic adjustable relation to meet heighth requirements. To provide strength and support rigidity, dual-tire bracing members are utilized to extend from the end frame of a lower section across and in an interconnecting relation with an opposed end frame of an upper section. A simple adjustment of the bracing members in conformance with vertical adjustments made between upper and lower sections is accomplished by utilizing members that at one end have a gooser pivot mounting on a horizontally extending connecting member of a frame of one section and that at the other end have a latching arm which is provided with a group of spaced-apart latching hole portions whose spacing is proportioned to vertical adjustment positions between the upper and lower sections. The latching hole portions are adapted to selectively detachably latch with a single latching pin means which is carried in a protected relation on an inwardly offset, short length or secondary leg member of the opposed frame of the other section. This enables the use of a single brace member for different heighth adjustments of stacked sections.
REFERENCES:
patent: 1279299 (1918-09-01), Du Brau
patent: 1593945 (1926-07-01), Macklem
patent: 2665950 (1954-01-01), Johnson
patent: 2698552 (1955-01-01), Smith
patent: 2701167 (1955-02-01), Kirkpatrick
patent: 2811395 (1957-10-01), Jagiel
patent: 3190405 (1965-06-01), Squire
patent: 3604175 (1970-09-01), Gray
Beaver-Advance Corporation
Ridgill, Jr. James L.
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