Here the great Light-heavyweight boxer from Philadelphia Tommy Loughran gets in a quick workout while his trainer Jack Brady looks on. These two shots are especially rare as they are two different shots taken at the same moment from two different cameras. They were taken in 1929.
Wall Pulleys were one of the first commercially available pieces of training equipment and were a common sight in gyms in the later 19th and early 20th century. Pugilists used to use them for building punching power as well as developing upper body endurance.