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FR499173A - Cric de levage - Google Patents

Cric de levage

Info

Publication number
FR499173A
FR499173A FR499173DA FR499173A FR 499173 A FR499173 A FR 499173A FR 499173D A FR499173D A FR 499173DA FR 499173 A FR499173 A FR 499173A
Authority
FR
France
Prior art keywords
lifting jack
jack
lifting
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
English (en)
Inventor
John James Culver
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.)
JOHN JAMES CULVER
Original Assignee
JOHN JAMES CULVER
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 JOHN JAMES CULVER filed Critical JOHN JAMES CULVER
Application granted granted Critical
Publication of FR499173A publication Critical patent/FR499173A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/14—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through pawl-and-ratchet mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/20—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through multiple or change-speed gearings

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
FR499173D 1919-05-08 1919-05-08 Cric de levage Expired FR499173A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR499173T 1919-05-08

Publications (1)

Publication Number Publication Date
FR499173A true FR499173A (fr) 1920-02-03

Family

ID=1534263

Family Applications (1)

Application Number Title Priority Date Filing Date
FR499173D Expired FR499173A (fr) 1919-05-08 1919-05-08 Cric de levage

Country Status (1)

Country Link
FR (1) FR499173A (fr)

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