CA985220A - Continuous line yarder with traction and extensible sheave assemblies - Google Patents

Continuous line yarder with traction and extensible sheave assemblies

Info

Publication number
CA985220A
CA985220A CA174,755A CA174755A CA985220A CA 985220 A CA985220 A CA 985220A CA 174755 A CA174755 A CA 174755A CA 985220 A CA985220 A CA 985220A
Authority
CA
Canada
Prior art keywords
yarder
extensible
traction
continuous line
sheave assemblies
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
CA174,755A
Other versions
CA174755S (en
Inventor
James R. Raven
Frederic E. Langford
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.)
FORMAC INTERNATIONAL AB
Original Assignee
FORMAC INTERNATIONAL AB
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 FORMAC INTERNATIONAL AB filed Critical FORMAC INTERNATIONAL AB
Application granted granted Critical
Publication of CA985220A publication Critical patent/CA985220A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C21/00Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
CA174,755A 1972-10-26 1973-06-22 Continuous line yarder with traction and extensible sheave assemblies Expired CA985220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US301128A US3874517A (en) 1972-10-26 1972-10-26 Continuous line yarder with traction and extensible sheave assemblies

Publications (1)

Publication Number Publication Date
CA985220A true CA985220A (en) 1976-03-09

Family

ID=23162072

Family Applications (1)

Application Number Title Priority Date Filing Date
CA174,755A Expired CA985220A (en) 1972-10-26 1973-06-22 Continuous line yarder with traction and extensible sheave assemblies

Country Status (2)

Country Link
US (1) US3874517A (en)
CA (1) CA985220A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136786A (en) * 1974-09-30 1979-01-30 Skagit Corporation Logging system and yarder therefor
DE2642766C2 (en) * 1976-09-23 1985-03-14 Bönninghaus, geb. Kreuser, Magdalene, 4700 Hamm Device for pulling shoring walls, panels, sheet piles or similar shoring elements for trench shoring
US4103784A (en) * 1977-04-29 1978-08-01 The United States Of America As Represented By The Secretary Of Agriculture Single line, traction driven running skyline system
US7134645B1 (en) * 2003-02-05 2006-11-14 Advanced Design Consulting Usa Winch assembly for use with synthetic ropes

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US943032A (en) * 1909-12-14 Thomas Spencer Miller Cableway.
US111188A (en) * 1871-01-24 Improvement in hoisting apparatus
US2588037A (en) * 1950-09-30 1952-03-04 Orton Crane & Shovel Company Tagline mechanism
US3378232A (en) * 1966-04-18 1968-04-16 Humboldt Company Regenerative interlocking yarder system
US3323780A (en) * 1966-07-07 1967-06-06 Smith Berger Mfg Corp Yarder
US3407942A (en) * 1967-02-23 1968-10-29 Skagit Corp Log yarding system
US3436056A (en) * 1967-09-07 1969-04-01 Washington Iron Works Drive system for yarder used in double main line logging
US3584747A (en) * 1969-07-31 1971-06-15 Georgia Pacific Corp Line shortener for grapple log-yarding apparatus

Also Published As

Publication number Publication date
US3874517A (en) 1975-04-01

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