AN INTERESTING LECTURE.

Auckland Star, Volume XXI, Issue 184, 6 August 1890, Page 6

AN INTERESTING LECTURE.

Mr C. D, McDo-GAld, of Dundee, Scotland, lectured before the Dundee Mechanical Society, on " Wabch EscapementsPast and Presenb," on December 21, 1888. The lecturer showed the greab importance of Dr. Hook's invention of the balance spring, which, together with the balance wheel, consbitubed, he said, bhe true timekeeping part of bhe wabch. The chronometer, duplex, lever, cylinder and virgule escapements were minutely described wibh the aid of diagrams, and the properties of each as regards their influence on the timekeeping of the watch noted. He spoke at length of bhe duplex escapement, and expressed the opinion, from a scientific poinb of view, thab it was equal, if not superior, to the lever as an escapement suitable for first-classpocket watches. He referred bo che wonderful producbions of the Waterbury Wabch Company, and sbated that the merits of the duplex had been recognised by that company. A very large Waterbury model wa_ shown in action, as well as all the ordinary productions of the Company. The method of cutting and setting up the teeth of the Waberbury 'scape wheel, one of which was senb round the audience, was much admired, besides enlighteniug many upon the merit of Yankee productions. The meeting terminated with a hearty vote of thanks to Mr McDougald.—Extract from " Dundee Advertiser."