Piston Ring Manufacture.

A Few Notes and Reflections Suggested by a Visit to the Works of the British Chuck and Piston Ring Co., Ltd. The method of specialized manufacturing of one or two details, as......

An Ingenious Paraffin Attachment.

The automatic petrol starter which we illustrate on this page by line drawing, and as fitted to an Austin van engine, is designed to enable the user to use paraffin, a mixture......