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in subjects: "Science and Technology - Tools"  
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Lock-Washer.

Description: Patent for "an improved lock washer especially adapted for locking nuts" (lines 10-11) that was designed to "be interposed between the nut and a member to be clamped by the nut" (lines 14-16).
Date: June 8, 1920
Creator: Medbery, Clinton A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Locomotive-Pilot Coupling

Description: Patent for new and useful improvements in locomotive-pilot couplings (lines 5-6), including illustrations and instructions.
Date: February 8, 1900
Creator: Butcher, George W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Fireproof Floor Construction.

Description: Patent for fireproofing floor construction in a durable and huge manner. The parts that support and brace the flooring with v-shaped anchors and concrete walling, assist with fireproofing the floor.
Date: September 8, 1903
Creator: Shield, Patrick T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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