Recognize this tiller?

I inherited this rototiller and haven’t been able to locate the manufacturer’s nametag. I’ve been trying to determine the machine’s manufacturer and age. I’m certain that the Clinton 2-1/4 hp cast iron engine is a replacement. The engine’s drivebelt can be positioned in one of two driveshaft pulley positions to supplement the drive gears. A drive-shaft interconnects the engine with the drive wheel and tine gear boxes.

The machine has two forward speed gears and a neutral, but no reverse gear. The rubber drive treads are seated in guide channels welded onto a cylindrical steel drum. The handlebar height can be adjusted up or down and locked in position at any height. A heavy spring secured between the handlebars permits the bars to be separated, then locked in the center, right or left positions. The right and left handlebar offset positions permit the operator to avoid walking on the freshly tilled row.

Two articulated control rods run down the left handlebar. One rod disengages the machine from the neutral position and engages one of the two forward drive speeds. Pulling the drive control rod backward selects the lower speed; pushing the rod forward selects the higher speed. The second control rod engages and disengages the rear 8-tine tiller blades. An adjustable foot behind the tines controls the tilling depth.

This machine hadn’t been used for many years, but after cleaning the engine’s needle valves I was able to start it after a few pulls. It did quite a nice job of tilling the garden. If anyone could provide information as to the manufacturer and age of this machine, I would appreciate it.