OWD,
The following DGJ's have very informative articles on Lancasters written by David Baker.
DGJ Volume 13 issue 4, winter 2002
"A new slant on the wrist breaker".
This article is about a unique Rogers conversion of the wrist breaker action
DGJ Volume 9 issue 3, autumn 1998
"They call it the wrist breaker"
This article provides a wealth of info including all the pertinent patents, etc. even has pics of a cut away wrist breaker. Talks in length about the various models and design changes over the years.
Chas. Lancaster model A "wrist breaker" SLE, Circa 1894.
Chas. Lancaster body action, circa 1896, 1 of a pair. The Lancaster body action is a completely different design from the typical A&D. All of the body action guns I've ever seen have the "0" prefix serial number. Indicating that they were possibly made outside the Lancaster factory. All proof marks are London.
Sugar tongs style forend
Action compressor cams
