Dating stanley transitional planes
I converted the type study to hypertext and added the plane dating flowchart and feature timeline.
It includes links to Patrick Leach's original Plane Type Study and the Plane Feature Timeline.
The information in this Web page is derived from a type study done by Roger Smith, in his book "Patented Transitional & Metallic Planes in America." Patrick Leach reformatted the type study and added comments based on his experience with Stanley planes.
This stuff is applicable to all Stanley bench planes of the basic Bailey design (as well as those that incorporate the Bailey patents such as the Bed Rocks), and comes from my observances of thousands of these planes.
All dimensions that follow each number indicate the length of the sole, the width of the cutter, and the weight of the tool.
The 18 different models attest to this fact - all of them are different lengths and widths.