Petrol Locomotives For Mines.

Methods Adopted in Fire-damp Workings to Prevent Explosion from the Exhaust Gases. Interesting Safety Devices. The lives of pit ponies are far from happy. They are daily put to......

The Simplex Pneumatic Hub.

A Resilient Wheel of Undoubted Merit, and Probably the Only One Which Has Received the Licence of Scotland Yard. The interposition of an air cushion between the body of a wheel......