On Mon, Jul 18, 2022 at 09:04 AM, Charles Greene wrote:

Somewhat similar to the Miner brake actuator mechanism?

Well, yes. Unfortunately, that's no clarification at all.
Miner made both the lever on vertical staff type and the lever mechanism winding the chain type. Worse yet, Miner called both "Miner Ideal Safety Hand Brake". When necessary, they were distinguished as "staff type" and "chain type", respectively.
As others have said, the brake being discussed is the staff type, in which the lever is lifted, then moved in a horizontal arc to rotate the staff, which winds chain around it's lower end.

Jack Mullen