hanging door hardware for sliding closet door

Two of the pictures are of the hanging fixture and the one on the right is the fixture that guides the door along a track on the floor. Some observations:

1. The hardware is composed of two parts. There are "beds" into which the hanging guide and the floor guide fit.

2. The bed is marked " Acme" with the word contained in double circles. Below the circles the number 2 is pressed into the metal of the bed. The bed on the hanging guide has a patent 1953.1966 dated (?) 1970.

3. Both beds appear to be the same.

​4. The beds fit into the door frame bypressure only.​