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B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
B61C15/08—Preventing wheel slippage
B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials
B61C15/105—Preventing wheel slippage by depositing sand or like friction increasing materials with gravity activated sanding equipment
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FR49208D1937-08-091937-08-09Perfectionnements apportés à l'écoulement intermittent et automatique de matières diverses
ExpiredFR49208E
(fr)