The correct person should be Harry L. Earle, not Harry Earle (as this person is a football player in England). Whitcomb L. Judson manufactured zippers in the United States. See this story.--Doug Coldwell talk 21:39, 7 March 2010 (UTC)
1. What does the picture show? The box of the waggon/streetcar seems not to be important as it is drawn in thin lines.
2. The structure in thicker lines seems to be a kind of suspension of the box on flat springs on 6 axles(?).
3. Wheels are not shown. 4. At the bottom there is a rail, or rather a tube? --Helium4 (talk) 07:07, 19 March 2012 (UTC)