Here's a selection of news articles dating from 1956 around the time when Caterpillar established a factory in Scotland and also acquired the Birtley company [attachment=70894]Caterpillar Birtley PF Sept 56 (21).jpg[/attachment] [attachment=70897]Caterpillar PF Feb 56 (14).jpg[/attachment] [attachment=70895]Caterpillar Scotland PF Aug 56 (9).jpg[/attachment] [attachment=70896]Caterpillar Scotland PF Feb 56 (7).jpg[/attachment]
Great post, my cousin had a D2 in NZ that had a Birtley blade. I don't recall the balance of the system, whether the cylinders were like the ones on my D2 or were of a different manufacture. I'm also amused that even in that old ad, the copywriter was also throwing apostrophes in for plural. The editor must have been asleep that day.