GB715358A - Adjustable prop or shore - Google Patents

Adjustable prop or shore

Info

Publication number
GB715358A
GB715358A GB4891/52A GB489152A GB715358A GB 715358 A GB715358 A GB 715358A GB 4891/52 A GB4891/52 A GB 4891/52A GB 489152 A GB489152 A GB 489152A GB 715358 A GB715358 A GB 715358A
Authority
GB
United Kingdom
Prior art keywords
nut
threaded
pin
prop
holes
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
GB4891/52A
Inventor
Arthur Franklin Allen
Arthur Lucien Perret
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.)
Safway Steel Products Inc
Original Assignee
Safway Steel Products Inc
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 Safway Steel Products Inc filed Critical Safway Steel Products Inc
Priority to GB4891/52A priority Critical patent/GB715358A/en
Publication of GB715358A publication Critical patent/GB715358A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E21D15/14—Telescopic props
    • E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • E04G25/063—Shores or struts; Chocks telescopic with parts held together by positive means by pins with safety devices to avoid the accidental loss or unlocking of the pin, e.g. chains attaching the pin to the prop
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
    • 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
    • E21D15/14—Telescopic props
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/24—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G2025/042—Shores or struts; Chocks telescopic with devices to avoid accidental disengagement of the telescopic elements, e.g. during transport

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)

Abstract

715,358. Props. SAFWAY STEEL PRODUCTS, Inc. Feb. 25, 1952, No, 4891/51. Class 20 (2) A prop comprises a lower tubular part 10, Fig. 2, threaded at its upper end 10a and receiving telescopically an upper part 12, a nut 20 on the threaded part 10a. carrying a thrust collar 18 having an annu'us 26 depending between the nut 20 and part 12 and providing a bearing for the upper part 12 which at its lower end is formed with bosses 28 bearing against the lower part 10, the upper part 12 having axially spaced holes 14 for selectively receiving a pin 16 adapted to rest on top of the collar 18 to support the part 12. Only the lower part of the nut 20 is threaded, the upper part having a smooth bore slightly greater than the diameter of the threads on the lower prop part 10, thus reducing thread friction but retaining stability. When not in use the pin 16 may be passed through opposed holes 32, Fig. 3, in the nut 20 and through holes 14 in the upper part 12 to lock the part 12 to the nut 20 and the pin held in position by turning the nut to bring the pin against the top of the lower part 10 as shown in Fig. 3, so preventing inadvertent telescopic action when carrying the prop. A depending sleeve may be added to the nut 20 to prevent fouling the threaded part 10a with mortar, cement &c.
GB4891/52A 1952-02-25 1952-02-25 Adjustable prop or shore Expired GB715358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4891/52A GB715358A (en) 1952-02-25 1952-02-25 Adjustable prop or shore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4891/52A GB715358A (en) 1952-02-25 1952-02-25 Adjustable prop or shore

Publications (1)

Publication Number Publication Date
GB715358A true GB715358A (en) 1954-09-15

Family

ID=9785805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4891/52A Expired GB715358A (en) 1952-02-25 1952-02-25 Adjustable prop or shore

Country Status (1)

Country Link
GB (1) GB715358A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988318A (en) * 1959-10-12 1961-06-13 Waco Porter Corp Shore attachment combination
US3822850A (en) * 1973-01-29 1974-07-09 Dell Holdings Ltd Support for construction fence
CN107331369A (en) * 2017-07-14 2017-11-07 海伦钢琴股份有限公司 A kind of semi-automatic support rod mechanism
CN113585690A (en) * 2021-08-13 2021-11-02 宁波建工建乐工程有限公司 Support frame using elevator standard knot as bearing and construction method
WO2022034493A1 (en) * 2020-08-10 2022-02-17 Peri Ag Adjustable telescopic steel prop assembly having push-pull action

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988318A (en) * 1959-10-12 1961-06-13 Waco Porter Corp Shore attachment combination
US3822850A (en) * 1973-01-29 1974-07-09 Dell Holdings Ltd Support for construction fence
CN107331369A (en) * 2017-07-14 2017-11-07 海伦钢琴股份有限公司 A kind of semi-automatic support rod mechanism
CN107331369B (en) * 2017-07-14 2023-08-11 海伦钢琴股份有限公司 Semi-automatic stay bar mechanism
WO2022034493A1 (en) * 2020-08-10 2022-02-17 Peri Ag Adjustable telescopic steel prop assembly having push-pull action
CN113585690A (en) * 2021-08-13 2021-11-02 宁波建工建乐工程有限公司 Support frame using elevator standard knot as bearing and construction method

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