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Switch Attachment.
Patent for a switch attachment that consists of a derailing guard, a side track rail, an adjustable shoe that pivots next to the rail, a vertical groove in the end of the shoe, and a swinging free arm.
Date:
April 3, 1894
Creator:
Warren, Governor D. & Casey, James
System:
The Portal to Texas History
Dynamo Electric Machine
Patent for Dynamo Electric Machine. "in our improved dynamo-electric machine we combine in the armature the advantages due to iron wire and to separated disks or flat rings, and then binding them together at equal intervals." (lines18-23)
Date:
April 3, 1888
Creator:
Crowdus, Walter A. & Sutton, Henry M.
System:
The Portal to Texas History