I don’t have a huge collection of Chaplin Hand Planes, but I’ll share what I have.
Here is another great site with additional information http://www.petermcbride.com/chaplin/
Chaplin Patented planes were manufactured by Towers & Lyon of New York between 1872-1900.
Here is the original Patent shown first.
Note this style doesn’t have a lateral adjustment mechanism. This style is usually seen with a hardwood knob and tote.
This next one is known as the Chaplin Improved Patented Plane.
A Chaplin Block