what other safety equipments can you find in a chem lab (in school)?
As stated, dogs will mark their territory by urinating on convenient upright structures, including my white painted gatepost, which I scrub with bleach twice a year to get rid of the stains, so if you're reading this, lady with the blonde hair and the poodle, kindly stop your dog peeing on my gatepost! Thank you.
Drum support rollers. There are two of them. One (or both) may have lost a bearing or rubber tire and kept the drum from turning. The belt may have failed as a result of the drum roller failing. Been there, done that. Cheap and easy fix if you have the skills. Rollers are only about $10 - $20 for a set of two. Expensive if you have to call a repairman.
I'm not an expert, but it sounds like you may need to replace the belt.
