FR58959E - Differential drum control device for automatic skips - Google Patents

Differential drum control device for automatic skips

Info

Publication number
FR58959E
FR58959E FR58959DA FR58959E FR 58959 E FR58959 E FR 58959E FR 58959D A FR58959D A FR 58959DA FR 58959 E FR58959 E FR 58959E
Authority
FR
France
Prior art keywords
skips
automatic
control device
drum control
differential drum
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)
Inventor
Jean-Joseph Geffroy
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 filed Critical
Application granted granted Critical
Publication of FR58959E publication Critical patent/FR58959E/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/12—Grabs actuated by two or more ropes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR58959D 1949-01-04 1949-01-04 Differential drum control device for automatic skips Expired FR58959E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR58959T 1949-01-04

Publications (1)

Publication Number Publication Date
FR58959E true FR58959E (en) 1954-04-22

Family

ID=8692815

Family Applications (1)

Application Number Title Priority Date Filing Date
FR58959D Expired FR58959E (en) 1949-01-04 1949-01-04 Differential drum control device for automatic skips

Country Status (1)

Country Link
FR (1) FR58959E (en)

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