A paper roll assembly is provided with first and second plates and first and second arm assemblies. Each of the first and second plates defines a through-hole and includes two plate tabs spaced from one another and located on a plate inner surface. Each of the first and second arm assemblies is arranged with one of the first and second plates for rotation independent of the plate. Each arm assembly includes an arm secured to an internal shaft extending through the through-hole. Each internal shaft includes a first shaft tab and a second shaft tab extending from the internal shaft. One of the internal shafts is arranged with one of the plates so rotation of the internal shaft is constrained to facilitate mount or removal of the paper roll by contact between one of the two plate tabs and one of the first shaft tab and the second shaft tab.