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in subjects: "scaffolding"  
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Improvement in Painter's Scaffold-chairs.

Description: Patent for use of house-painters and others an improved scaffold-chair that may be elevated and lowered at pleasure by the person sitting on the scaffold.
Date: May 16, 1876
Creator: Crockett, John R.
Partner: UNT Libraries Government Documents Department

Improvement in Scaffold-Clamps.

Description: Patent for a reusable scaffold clamp for assembling builders' scaffolds, eliminating the need for nails or bolts.
Date: April 24, 1874
Creator: Crockett, John R.
Partner: UNT Libraries Government Documents Department

Fire-Escape.

Description: Patent for fire escapes adapted for "being carried fro one portion of a building to another to effect the escape of persons from any portion of the same and at an elevation thereof." (Lines 16-19) Includes instructions and illustrations.
Date: December 8, 1896
Creator: Sjolander, Eric O.
Partner: UNT Libraries Government Documents Department

Extensible Trestle.

Description: Patent for an improvement to extensible trestles for masonry and carpentryscaffolding and other uses, including both instructions and illustrations.
Date: January 7, 1890
Creator: Bogusch, Robert J.; Bogusch, Gustav & Zincke, August
Partner: UNT Libraries Government Documents Department
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