Model Engineer Index 1898 to Feb 2025

Year 1930
Date 06-Nov
Volume 63
Issue 1,539
Page 456
Category Exhibition
Part
Title What Some Inventors Have Been Doing. International Exhibition of Inventions
Author
Notes Gold Medal fog navigation compass, coin testing mechanism, combined ammeter and battery meter, method of manufacturing and repairing, aluminium articles, air cooling cylinders of petrol engines, electric clock with rate controlled by a gravity pendulum, an electric repeating transmitter, a contour driller, an improved drilling post, an extractor for removing cups from bottom brackets of cycles, a wind motor, a spring motor, ratchet screwdrivers, a device for using energy of the wind, electric heating fan, , triangle safety razor, woodworkers' saw guides, lifting machine for use in collieries, a cross-cut saw-bench