THE GREAT MULLARD MAGIC BLOG — ROGER BEARDSHALL

In this process, where sealed valves were passed from the last station of the sealing machine, a mechanical tri-claw hand fitted with an asbestos glove (imagine the 'elf n safety implications today!!!) transfered the valve to the first vacant position on the pumping machine. The pumping machine comprised of another rotating table which had a sequence of rubber bungs around the periphery.  Each bung was connected to a vaccuum manifold supplying a high torr vaccuum.  As the valve abutted a bung, the process of pumping commenced.  As the valve rotated around the table, the valve passed through a heated convection...