GB191507420A - Improved Pulling Jack. - Google Patents

Improved Pulling Jack.

Info

Publication number
GB191507420A
GB191507420A GB191507420DA GB191507420A GB 191507420 A GB191507420 A GB 191507420A GB 191507420D A GB191507420D A GB 191507420DA GB 191507420 A GB191507420 A GB 191507420A
Authority
GB
United Kingdom
Prior art keywords
chain
pulling jack
blair
pulling
improved pulling
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
Inventor
John Blair
Walter Blair
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
Publication of GB191507420A publication Critical patent/GB191507420A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
    • B66D3/14—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable lever operated
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/60—Devices for withdrawing props or chocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

7420. Blair, J., and Blair, W. May 18. [Addition to 16,876/13.] Winches; driving-gear.-Pulling-jacks of the kind described in the parent Specification are provided with a hook-shaped bracket c having a curved nose c<2> projecting into the groove of the chain-wheel b to prevent fouling of the pulling-chain, and with a shackle for the anchoring-chain formed with a hinged curved member g<2> held by a hinged strap h.
GB191507420D 1913-07-23 1915-05-18 Improved Pulling Jack. Expired GB191507420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191316876T 1913-07-23

Publications (1)

Publication Number Publication Date
GB191507420A true GB191507420A (en) 1916-01-06

Family

ID=32372086

Family Applications (2)

Application Number Title Priority Date Filing Date
GB191316876D Expired GB191316876A (en) 1913-07-23 1913-07-23 Improved Pulling Jack.
GB191507420D Expired GB191507420A (en) 1913-07-23 1915-05-18 Improved Pulling Jack.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB191316876D Expired GB191316876A (en) 1913-07-23 1913-07-23 Improved Pulling Jack.

Country Status (1)

Country Link
GB (2) GB191316876A (en)

Also Published As

Publication number Publication date
GB191316876A (en) 1914-07-09

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