We have all seen Snapon or Mac sockets designed to fit weatherhead brass fittings.
These are the same idea, but with Weatherhead logo on them.
Also note that they are for use with a female ratchet
(http://farm9.staticflickr.com/8372/8565911451_17d064ec70_z.jpg) (http://www.flickr.com/photos/skipskip/8565911451/)
MAR 158 (http://www.flickr.com/photos/skipskip/8565911451/) by skipskip (http://www.flickr.com/people/skipskip/), on Flickr
(http://farm9.staticflickr.com/8376/8565912077_69218c14cb_z.jpg) (http://www.flickr.com/photos/skipskip/8565912077/)
MAR 159 (http://www.flickr.com/photos/skipskip/8565912077/) by skipskip (http://www.flickr.com/people/skipskip/), on Flickr
Wonder who made them?
Skip
Here's a modern Cornwell version in normal square drive:
http://www.cornwelltools.com/webcat/categories.php?category=Drive-Tools/3{47}8%22-Weatherhead-Socket