The ad is at the bottom of the page, but it is for this spinning speed wrench; which is the only tool that comes up for me when I search his name. I borrowed these photos from a current ePay ad.
Got this at closing auction for local garage and towing company, in business since 1955. Marked Patrick-McDermott Co, Los Angeles CA. Never seen anything like it. It’s 3/4 drive and original owner told me he changed a lot of truck tires with it, back in the day.
www.garagejournal.com
Looks they were into aircraft and marine cabling based on the other links. So maybe not battery lugs, but seems credible
Cable splicing clamp. Designed for using a thimble to support the eye. This is a portable model, and the tab by the wing nut is designed to be held in a vise. The clamp can then be rotated by loosening the wing bolt that is screwed into the tab.
This is a diagram of a heavier-duty model, but this one works the same way: