Timely was the predecessor to Atlas which became Marvel Comics in the ’60s. Some of their superheroes survived that transition (Captain America, the Sub-Mariner, and an android Human Torch, among others). I’ve only begun to dig up their time travel, finding one issue of All Winners Comics where Captain America and the All Winners Squad do battle with a man from 1,000,000 A.D. Also, in 1948, the Timely superhuman, comical boxer, Powerhouse Pepper, visited the pilgrims via time machine (Powerhouse Pepper 4, Sep 1948).