This looks like the Hobart design, not sure if WP still used it after the acquisition in '86.
I have a Hobart KA compactor we found new at a thrift store 10 years or so ago. Have it installed in the garage and we use it for recycling cans, bottles, etc. It's mostly novelty at this point, but when there's a party it comes in handy. I wouldn't use it for daily garbage, too messy and unnecessary for our needs.