Glass Ball Traps
Target ball traps are interesting in that there was quite a bit of innovation in the designs. The most common traps in use seem to have been the Bogardus, Card's, and Mole's, however there were several patent designs that were developed and put into use. Several other traps that were produced were probably not on the market long enough to have been patented. For anyone with a specific interest in the early glass target balls you really must check out Ralph Finch's site and the newsletter that he publishes called On Target.
NOTE: Just click on the photos for more images, patent information and advertising on that particular trap.