Very heavily advertised, this style appears in ads from 1919.
The U.S. Rubber Company was a manufacturer of rubber soles to the footwear manufacturing trade. At the end of WWI they started to manufacture their own line of men’s, women’s and children’s canvas sport shoes.
The 1919 models:
(note the more bulbous toes on the womens’ styles)
Give way to the slightly curvier heel and pointier toes of the 1920 styles: