At some point these devices disappeared and the stapler took off. It reminds me of the VHS vs Beta Max or the 8 Track vs the Cassette tape. Doing a quick search on ebay, you can still find a few of these gems.
The one pictured above is made made from steel. It was made in La Crosse, Wisconsin. Many people people will often mistake these for metal staplers, which they certainly aren't.
Below is what happens when you use the Bump Paper Fastener on two sheets of paper. The pink sheet was the bottom sheet and the cream was the top. Notice how the the sheets were folded into the horizontal slice.
Check out our other articles on our main site Antique Outings.
Hand Held Bump Paper Fasteners
Clipless Stand Machine
Bump Paper Fastener