All the staples he used were carefully made by hand, with the royal logo printed on them, which was used to bind the royal documents together.

1868 Charles Gould obtained a British patent for the wire stapler. He used iron wire as a material, cut the wire into a certain length, and the tip of the wire forced through the paper and then folded it off. This is the direct prototype of modern stapler.

1869, Thomas Briggs of Boston, Massachusetts invented a machine that could do the job. He set up a "Boston Wire Binding Machine Company" to manufacture and sell this machine.

His machine breaks the wire and bends it into a U-shape, then uses it to nail through the pages, and finally bends it to fix the book correctly. Briggs' original stapler was quite complicated because it had many steps.

1894, he adopted a manufacturing process. First, the iron wire was bent to make a series of U-shaped staples.

These nails can be put into a simpler machine, which can embed them into paper. This machine is the prototype of today's stapler. Early U-shaped nails were wrapped in paper or put in a stapler alone.

Staplers were widely used in the 1920s, when U-shaped nails could be glued into a long strip and put on the market.

Extended data:

The principle of stapler:

Stapler does not use lever to change the strength, but mainly reduces the pressure by increasing the stress area of palm.

The force applied to the stapler by hand is effectively transmitted to the staple, and great pressure is formed at the contact point between the tip and the paper surface to pierce the paper surface.

Staplers provide a longer arm and greater torque by lengthening the handle. The downward pressure of the hand is transmitted to the contact between the nail tip and the paper surface, which can be amplified by about twice.

When an adult presses his whole body weight on the handle, the pressure on the nail tip will exceed 1000N, which is enough to penetrate a very thick manuscript.

The stapler will compress the spring to store energy in the first half of the handle, and when you press it in the second half, it will trigger the internal lock, release the spring to store energy and push a top piece down, thus quickly firing the staple below. The staple gains a large momentum and stops by itself after penetrating the paper.

Reference source: Baidu Encyclopedia-Stapler