FR838886A - Device for mechanical tightening and loosening of lag bolts - Google Patents

Device for mechanical tightening and loosening of lag bolts

Info

Publication number
FR838886A
FR838886A FR838886DA FR838886A FR 838886 A FR838886 A FR 838886A FR 838886D A FR838886D A FR 838886DA FR 838886 A FR838886 A FR 838886A
Authority
FR
France
Prior art keywords
loosening
lag bolts
mechanical tightening
tightening
mechanical
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.)
ALBERT COLLET FILS D
Original Assignee
ALBERT COLLET FILS D
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 ALBERT COLLET FILS D filed Critical ALBERT COLLET FILS D
Application granted granted Critical
Publication of FR838886A publication Critical patent/FR838886A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
    • E01B29/24—Fixing or removing detachable fastening means or accessories thereof; Pre-assembling track components by detachable fastening means
    • E01B29/28—Fixing or removing detachable fastening means or accessories thereof; Pre-assembling track components by detachable fastening means the fastening means being of screw-and-nut type; Apparatus therefor, adapted to additionally drilling holes

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
FR838886D 1938-06-03 1938-06-03 Device for mechanical tightening and loosening of lag bolts Expired FR838886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR838886T 1938-06-03

Publications (1)

Publication Number Publication Date
FR838886A true FR838886A (en) 1939-03-17

Family

ID=9299280

Family Applications (1)

Application Number Title Priority Date Filing Date
FR838886D Expired FR838886A (en) 1938-06-03 1938-06-03 Device for mechanical tightening and loosening of lag bolts

Country Status (1)

Country Link
FR (1) FR838886A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558407A (en) * 1947-08-08 1951-06-26 Ralph D Jenkins Power-operated portable wrench

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558407A (en) * 1947-08-08 1951-06-26 Ralph D Jenkins Power-operated portable wrench

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