FR722317A - Improvements in sand pits - Google Patents

Improvements in sand pits

Info

Publication number
FR722317A
FR722317A FR722317DA FR722317A FR 722317 A FR722317 A FR 722317A FR 722317D A FR722317D A FR 722317DA FR 722317 A FR722317 A FR 722317A
Authority
FR
France
Prior art keywords
sand pits
pits
sand
Prior art date
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.)
Expired
Application number
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR722317A publication Critical patent/FR722317A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • 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
    • B61C15/102—Preventing wheel slippage by depositing sand or like friction increasing materials with sanding equipment of mechanical or fluid type, e.g. by means of steam

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
FR722317D 1930-11-26 1930-11-26 Improvements in sand pits Expired FR722317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR722317T 1930-11-26

Publications (1)

Publication Number Publication Date
FR722317A true FR722317A (en) 1932-03-15

Family

ID=9100881

Family Applications (1)

Application Number Title Priority Date Filing Date
FR722317D Expired FR722317A (en) 1930-11-26 1930-11-26 Improvements in sand pits

Country Status (1)

Country Link
FR (1) FR722317A (en)

Similar Documents

Publication Publication Date Title
FR723980A (en) Improvements in toys
FR722317A (en) Improvements in sand pits
FR690440A (en) Improvements in pipes
FR706290A (en) Improvements in couplings
FR706230A (en) Improvements in carburetors
FR731676A (en) Improvements in circular knitters
FR674352A (en) Improvements in drills
FR689255A (en) Improvements in locks
FR720818A (en) Improvement in locks
FR690548A (en) Improvements in faucets
FR649575A (en) Improvements in alloys
FR626096A (en) Improvements in shop windows
FR619851A (en) Improvement in pipes
FR628470A (en) Improvements in pipes
FR676706A (en) Improvements in carburetors
FR39966E (en) Improvements in carburetors
FR679633A (en) Improvement in phonographs
FR721908A (en) Improvements in automatic valves
FR612786A (en) Improvements in stylographs
FR35433E (en) Improvements in tires
FR616154A (en) Improvements in alloys
FR706104A (en) Improvements in automatic brakes
FR649574A (en) Improvements in alloys
FR632382A (en) Improvement made in removable pipes
FR708424A (en) Improvements in illuminated projectors