Posted 7 years ago
The Ideal Clipless Paper Fastener is what is known as a stapleless stapler. It uses the Bump fastening method which was patented in the U.S. in 1911. The Ideal measures 4.75" H x 3.125" W x 1.875" L and weighs 6.5 ounces. It was manufactured and sold in Japan but also exported to England. The case is made of stained wood with the fastening mechanism made of polished steel.
While the available evidence is both sparse and largely circumstantial, I believe the Ideal Clipless Paper Fastener would have been sold from 1919 until about 1923.
A more in-depth write-up about the Ideal Clipless Paper Fastener can be found at https://americanstationer.wordpress.com/2016/05/30/ideal-clipless-paper-fastener/.