| Description | Includes papers (including specifications and drawings) relating to the following patents:
- James Robertson - Frictional Screw Gearing and Apparatus for drawing, and rolling wires, bars and tubes (October 1878)
- Samuel Walker – Improvements in the manufacture of Cast Hollow Cylinders of Copper (December 1879)
- James Robertson – Improvements in Apparatus for transmitting motive power ( September 1883)
- James Robertson – Improved constructions of housings for rolling, drawing, pressing, bending, shaping and crushing mills and machines (November 1885)
- William Edward Everitt – Improvements in the manufacture of brass, copper and other metallic tubes (November 1887)
The file also includes
- drawings of 'Robertson's Patent Hydraulic Tube Making Machine'
- a licence dated 21 April 1884 allowing Ralph Heaton the sole use of the invention in James Robertson's patent dated 22 October 1878 for frictional screw gearing and apparatus.
- an agreement dated 1 April 1887 between Ralph Heaton and Mr. Alfred Fryer for the sale and purchase of patent. |