ɪn nˈaɪntiːnhˈʌndɹɪd twˈɛnti fˈoːɹ, ɹˈuːdɑːlf dʒˈɔɪnd ðə bˈɪznəs, wˌɪtʃ bɪkˌeɪm ðə dʒˈɛbɹuːdɚ dˈæslɚ ʃˈuːfɐbɹˌɪk dˈæslɚ bɹˈʌðɚz ʃˈuː fˈæktɚɹi.
In 1924, Rudolf joined the business, which became the Gebrüder Dassler Schuhfabrik (Dassler Brothers Shoe Factory).