Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ROBERT JOHN MACNAIR
Original Assignee
ROBERT JOHN MACNAIR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ROBERT JOHN MACNAIRfiledCriticalROBERT JOHN MACNAIR
Application grantedgrantedCritical
Publication of FR386565ApublicationCriticalpatent/FR386565A/en
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
Landscapes
Engineering & Computer Science
(AREA)
Transportation
(AREA)
Mechanical Engineering
(AREA)
FR386565D1908-01-251908-01-25
Sand pit for trams and other vehicles
ExpiredFR386565A
(en)