GB334283A - Improvements in and relating to lifting jacks and the like - Google Patents

Improvements in and relating to lifting jacks and the like

Info

Publication number
GB334283A
GB334283A GB1714329A GB1714329A GB334283A GB 334283 A GB334283 A GB 334283A GB 1714329 A GB1714329 A GB 1714329A GB 1714329 A GB1714329 A GB 1714329A GB 334283 A GB334283 A GB 334283A
Authority
GB
United Kingdom
Prior art keywords
base
tracks
rollers
links
linkage
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
GB1714329A
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 GB1714329A priority Critical patent/GB334283A/en
Publication of GB334283A publication Critical patent/GB334283A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/12—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated comprising toggle levers

Abstract

334,283. Hern, A. B. Fee-. June 4, 1929. Linkage load-handling appliances. - A lifting-jack of the lazytongs type has the lazytongs linkage centrally pivoted to the base, the bottom pair of links having blocks or No Patent granted (Sealing fee not paid). rollers at their ends adapted to run on tracks on the base. The bottom members 16 of the linkage have a central pivot 17 on the base 14, while the top members 19 carry the crutch 20, which has a slotted stem 23 engaging a pin on a steadying link 25. The main links 8 have downward extensions connected at their lower ends by transverse blocks fitted with rollers 13 running on tracks on the base 14. The operating screw 26 is socketed in one block and engages a nut portion in the other block or a double screw with threads of opposite hands may be used and be driven by toothed gearing. The tracks may be curved. In a modification the operating screw 47, Fig. 6, engages blocks 46 on the main links 39, while auxiliary links 42 carry the rollers 43.
GB1714329A 1929-06-04 1929-06-04 Improvements in and relating to lifting jacks and the like Expired GB334283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1714329A GB334283A (en) 1929-06-04 1929-06-04 Improvements in and relating to lifting jacks and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1714329A GB334283A (en) 1929-06-04 1929-06-04 Improvements in and relating to lifting jacks and the like

Publications (1)

Publication Number Publication Date
GB334283A true GB334283A (en) 1930-09-04

Family

ID=10090030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1714329A Expired GB334283A (en) 1929-06-04 1929-06-04 Improvements in and relating to lifting jacks and the like

Country Status (1)

Country Link
GB (1) GB334283A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463654A (en) * 1947-02-25 1949-03-08 Teague John Combination bumper and axle jack for vehicles
US2470105A (en) * 1946-02-23 1949-05-17 Marathon Mfg Co Portable lifting jack
DE952356C (en) * 1953-08-07 1956-11-15 Konrad Darius Device for moving loads vertically and horizontally, especially for rerailing rail vehicles
DE1068625B (en) * 1959-11-05
GB2117348A (en) * 1982-03-31 1983-10-12 Chuan Wu An Screw-driven jack
WO2007096714A2 (en) * 2005-11-28 2007-08-30 Quaddro Technologies (Pty) Ltd A scissor jack
EP2208675A1 (en) * 2009-01-15 2010-07-21 SSB Strapping Systeme Bayreuth GmbH Strapping machine
CN101374755B (en) * 2005-11-28 2011-04-13 夸德罗科技股份有限公司 A scissor jack
US8382068B2 (en) 2006-11-27 2013-02-26 Quaddro Technologies Pty., Ltd. Scissor jack

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068625B (en) * 1959-11-05
US2470105A (en) * 1946-02-23 1949-05-17 Marathon Mfg Co Portable lifting jack
US2463654A (en) * 1947-02-25 1949-03-08 Teague John Combination bumper and axle jack for vehicles
DE952356C (en) * 1953-08-07 1956-11-15 Konrad Darius Device for moving loads vertically and horizontally, especially for rerailing rail vehicles
GB2117348A (en) * 1982-03-31 1983-10-12 Chuan Wu An Screw-driven jack
WO2007096714A3 (en) * 2005-11-28 2008-01-03 Niekerk Norman Julius Van A scissor jack
WO2007096714A2 (en) * 2005-11-28 2007-08-30 Quaddro Technologies (Pty) Ltd A scissor jack
EA014004B1 (en) * 2005-11-28 2010-08-30 Кваддро Текнолоджиз (Пти) Лтд. A semirevolving jack
CN101374755B (en) * 2005-11-28 2011-04-13 夸德罗科技股份有限公司 A scissor jack
US8052121B2 (en) 2005-11-28 2011-11-08 Quaddro Technologies (Pty) Ltd. Scissor jack
AU2006339069B2 (en) * 2005-11-28 2012-05-10 Quaddro Technologies (Pty) Ltd A scissor jack
US8382068B2 (en) 2006-11-27 2013-02-26 Quaddro Technologies Pty., Ltd. Scissor jack
EP2208675A1 (en) * 2009-01-15 2010-07-21 SSB Strapping Systeme Bayreuth GmbH Strapping machine

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