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2015 Spaulding RMV Patch Machine
The 2015 Spaulding RMV (Road Maintenance Vehicle) Patch Machine is a type of asphalt hot box used to repair potholes. It is available as a trailer-mounted, slip-in, or truck-mounted unit, and capacities typically range from 1 to 10 tons. A 2015 model would feature heavy-duty steel construction and an insulated hopper to keep asphalt hot and workable on the job site.

General specifications
Capacity: Varies by model, but a common trailer model is 4-ton, with chassis mounts available up to 10 tons. A specific 2015 6-ton trailer model was documented with a GVWR (Gross Vehicle Weight Rating) of 20,000 lbs.

Mounting options:
Trailer-mounted: Towed behind a vehicle.
Hopper design: Triple-walled and fully insulated to maintain heat. The floor has a gravity-feed design with a sloped front (around 48 degrees) to allow asphalt to flow easily toward the back for the operator.

Heating system:
Fuel: Models can be either diesel or propane-fired.
Burners: Uses high-BTU burners, with a 105,000 BTU burner common on diesel models.
Hopper jackets: Available in either oil-jacketed or air-jacketed versions. Oil-jacketed systems offer more even heat and can sometimes recycle asphalt with a single burner.
Controls: Features automatic temperature control with curbside digital controls for easy operation.

Common features
Hydraulic dump hopper: A scissor hoist on some models allows for easy dumping of material.
Hydraulic doors: Many units are equipped with hydraulic bi-fold top doors for loading and a hydraulic rear door for unloading.
Material reclamation: Oil-jacketed versions can also function as asphalt recyclers, allowing for the reuse of milled materials and asphalt chunks.
Optional tack tank: Many units come with or can be equipped with a heated tack tank and spray system for permanent pothole patches.
Other options: Includes a variety of features such as hydraulic tampers, overnight heating systems, and safety lighting kits.

Please come and inspect.
I am told it is in working condition but the bottom floor is badly rusted.