Robert Crichton, of Birmingham, Pa,, has taken measures to secure a patent for an improved machine for making metai bolts. There are two new improvements claimed for this machine, viz , the ...

Witness the incredible repair process of a tyre bolt machine square, expertly fixed with advanced grinding techniques. Skilled craftsmen use their precision tools to restore the machine to perfect ...

The guys from the YouTube channel How To Make Everything have been looking at one such sketch, a screw thread-cutting machine. At first glance, it seems a little flawed. Threads are hard to make ...