Small parts.
A lasting connection.
Since 2023, we’ve been keeping true-scale couplers in the hands of model railroaders. Built on the work of Frank Sergent. Made with care in the USA.
The Sergent tradition.
Carried forward.
Frank Sergent showed what a difference a true-scale coupler could make to an HO model. When Sergent Engineering closed, we worked with Frank to bring those couplers back to modelers.
With his authorization, we use the original Sergent tooling for our die-cast couplers. We also source our balls, springs and uncoupling wands from the same suppliers Sergent Engineering used. That connection to the original designs is at the heart of Prototype Couplers.
Made here.
Finished by hand.
Our investment castings are made in-house in small batches. We start with resin-printed parts, prepare the molds, and cast them in zinc alloy. After casting, we machine, inspect and clean the parts before they’re ready to package.
Getting from a printed part to a finished casting takes several days. The work is in the details: a shank that fits its draft gear box, a ball that moves freely, and a casting that’s ready for assembly.
Our couplers, balls, springs and uncoupling wands are made in the USA.
The person behind
the couplers.
I’m Alexander Woychosky. Prototype Couplers is a family business in Vermont, and I run it myself.
There’s more I want to bring to the range. New products take time to develop, and some spend months in the works before they’re ready. I’ll keep sharing that progress, along with new releases, in our news section.
Thank you for making Prototype Couplers part of your railroad. I look forward to serving the model railroading community for years to come.
Alexander WoychoskyPrototype Couplers