GB656438A - A new or improved means for adjusting the feet of ladders, step ladders, pit props, scaffolding props, table legs, stools, and the like - Google Patents

A new or improved means for adjusting the feet of ladders, step ladders, pit props, scaffolding props, table legs, stools, and the like

Info

Publication number
GB656438A
GB656438A GB86649A GB86649A GB656438A GB 656438 A GB656438 A GB 656438A GB 86649 A GB86649 A GB 86649A GB 86649 A GB86649 A GB 86649A GB 656438 A GB656438 A GB 656438A
Authority
GB
United Kingdom
Prior art keywords
feet
props
ladders
pistons
movement
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
GB86649A
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
Priority to GB86649A priority Critical patent/GB656438A/en
Publication of GB656438A publication Critical patent/GB656438A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/44—Means for mounting ladders on uneven ground

Abstract

656,438. Levelling devices. RINK, H. L., and SPENCE, R. F. Jan. 12, 1949, Nos. 866 and 14441. [Class 52 (iii)] [Also in Group X] A mounting for the feet of a table, chair, cooker or clothes boiler to enable it to be placed on uneven ground comprises two feet 30 connected by a guided incompressible fluid medium so that movement of one foot is transferred to the other e.g. upward movement of one foot produces downward movement of the other. In the Figure the invention is shown applied to a ladder of which the feet are formed as pistons 21 in cylinders 11 connected by a conduit 18 and filled with liquid 10 which transmits the movement. The flow of liquid may be adjustable. Pneumatic means may be used instead of liquid. The bases of the pistons 21 are provided with plates 29 to prevent sinking in soft ground or rubber cups 32 for hard ground. The mounting is clamped to the sides of the ladder by clips 34 and hooks 35 screwing in the clips. Extension tubes may be provided, adapted to be fitted on the lower ends of one of the pistons 21 to compensate for large differences of level.
GB86649A 1949-01-12 1949-01-12 A new or improved means for adjusting the feet of ladders, step ladders, pit props, scaffolding props, table legs, stools, and the like Expired GB656438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB86649A GB656438A (en) 1949-01-12 1949-01-12 A new or improved means for adjusting the feet of ladders, step ladders, pit props, scaffolding props, table legs, stools, and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB86649A GB656438A (en) 1949-01-12 1949-01-12 A new or improved means for adjusting the feet of ladders, step ladders, pit props, scaffolding props, table legs, stools, and the like

Publications (1)

Publication Number Publication Date
GB656438A true GB656438A (en) 1951-08-22

Family

ID=9711851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB86649A Expired GB656438A (en) 1949-01-12 1949-01-12 A new or improved means for adjusting the feet of ladders, step ladders, pit props, scaffolding props, table legs, stools, and the like

Country Status (1)

Country Link
GB (1) GB656438A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142965A (en) * 1983-07-05 1985-01-30 Neil Arthur Burton A stair platform
US4541650A (en) * 1983-10-11 1985-09-17 Cline Jack B Motorcycle ride-off stand
GB2171746A (en) * 1985-03-01 1986-09-03 Derek Short Ladder stabiliser
GB2340529A (en) * 1998-08-01 2000-02-23 Dennis Stanley Whitehouse Hydraulic levelling apparatus for ladders and scaffolding
GB2376976A (en) * 2001-06-06 2002-12-31 Steven Ernest Harrison Ladder stabilizer
GB2440741A (en) * 2006-08-10 2008-02-13 Tuncer Mehmet Ladder Support
GB2487408A (en) * 2011-01-21 2012-07-25 Eric Burden A support apparatus with hydraulic leveling means
CN105909922A (en) * 2016-05-31 2016-08-31 万建新 Openable horizontal device based on flowing media and provided with multiple cavities communicating with one another

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142965A (en) * 1983-07-05 1985-01-30 Neil Arthur Burton A stair platform
US4541650A (en) * 1983-10-11 1985-09-17 Cline Jack B Motorcycle ride-off stand
GB2171746A (en) * 1985-03-01 1986-09-03 Derek Short Ladder stabiliser
GB2340529A (en) * 1998-08-01 2000-02-23 Dennis Stanley Whitehouse Hydraulic levelling apparatus for ladders and scaffolding
GB2376976A (en) * 2001-06-06 2002-12-31 Steven Ernest Harrison Ladder stabilizer
GB2376976B (en) * 2001-06-06 2003-08-13 Steven Ernest Harrison Ladder stabilisers
GB2440741A (en) * 2006-08-10 2008-02-13 Tuncer Mehmet Ladder Support
GB2440741B (en) * 2006-08-10 2011-05-18 Tuncer Mehmet Ladder support device
GB2487408A (en) * 2011-01-21 2012-07-25 Eric Burden A support apparatus with hydraulic leveling means
GB2487408B (en) * 2011-01-21 2014-09-17 Eric Burden Self levelling support apparatus
CN105909922A (en) * 2016-05-31 2016-08-31 万建新 Openable horizontal device based on flowing media and provided with multiple cavities communicating with one another

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