GB501554A - Improvements for lifting jacks - Google Patents

Improvements for lifting jacks

Info

Publication number
GB501554A
GB501554A GB2877037A GB2877037A GB501554A GB 501554 A GB501554 A GB 501554A GB 2877037 A GB2877037 A GB 2877037A GB 2877037 A GB2877037 A GB 2877037A GB 501554 A GB501554 A GB 501554A
Authority
GB
United Kingdom
Prior art keywords
bracket
lever
load
friction
column
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
GB2877037A
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.)
S Smith and Sons Ltd
S Smith and Sons Motor Accesories Ltd
Original Assignee
S Smith and Sons Ltd
S Smith and Sons Motor Accesories Ltd
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 S Smith and Sons Ltd, S Smith and Sons Motor Accesories Ltd filed Critical S Smith and Sons Ltd
Priority to GB2877037A priority Critical patent/GB501554A/en
Publication of GB501554A publication Critical patent/GB501554A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F1/00Devices, e.g. jacks, for lifting loads in predetermined steps
    • B66F1/02Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Steering Controls (AREA)

Abstract

501,554. Lifting-jacks. BOWMAN, G., and SMITH & SONS (MOTOR ACCESSORIES), Ltd., S. Oct. 21, 1937, No. 28770. [Class 78 (iii)] Friction - ratchet lifting- jacks in which upper and lower friction members slide on a column and bind thereon when tilted, the upper member comprising a load-receiving abutment offset from the column and the lower member forming an abutment for the operating lever, are fitted with a bracket sliding on the column and coupling the two friction members together in spaced relationship. Fig. 1 shows an upper friction member 13 which bears against a collar 32 on a sliding load-supporting member. The latter may be adapted to tit into a bracket 34 fixed on the framework of a motor vehicle. The lower friction member 14 is connected to the coupling bracket 15 by a spring 24 and the lever 28 connects the bracket to the member 13. The operating lever 16 is pivoted to the bracket 15 and linked to the friction member 14. Depression of the lever 16 first causes the member 14 to tilt and bind on the standard 10 and then raises the bracket 15 bodily, thus causing the collar 26 to raise the upper member 14 and the load. On raising the lever 16, the member 14 tilts and supports the load, and the spring 24 raises the member 14 to the new position of bracket 15 ready for another stroke. Depression of the lever 28 rocks the member 13 into its non-gripping position and permits lowering. A ball-mounted foot 12 is fitted to the column. Fig. 2 shows a construction in which the coupling bracket encloses the two friction members 41, 47. Raising of the lever 50 causes the member 47 to tilt and grip and then raises casing 40 bodily and the load carried in the crutch 43. On lowering the lever, member 41 tilts and grips and the spring 49 restores 47 ready for another stroke. Depression of 44 tilts member 41 into non-gripping position for lowering.
GB2877037A 1937-10-21 1937-10-21 Improvements for lifting jacks Expired GB501554A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2877037A GB501554A (en) 1937-10-21 1937-10-21 Improvements for lifting jacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2877037A GB501554A (en) 1937-10-21 1937-10-21 Improvements for lifting jacks

Publications (1)

Publication Number Publication Date
GB501554A true GB501554A (en) 1939-03-01

Family

ID=10280865

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2877037A Expired GB501554A (en) 1937-10-21 1937-10-21 Improvements for lifting jacks

Country Status (1)

Country Link
GB (1) GB501554A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551896A (en) * 1947-10-22 1951-05-08 Notestein Edison Lowell Post driving apparatus
US2858094A (en) * 1955-05-11 1958-10-28 Boise D Olson Extensible prop
US3272288A (en) * 1964-09-18 1966-09-13 Sperry Rand Corp Friction brake
WO2020209731A1 (en) * 2019-04-12 2020-10-15 Viking Arm AS Lowering mechanism for hand held jacking tool
WO2024132479A1 (en) 2022-12-23 2024-06-27 Bessey Tool Gmbh & Co. Kg Lifting clamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551896A (en) * 1947-10-22 1951-05-08 Notestein Edison Lowell Post driving apparatus
US2858094A (en) * 1955-05-11 1958-10-28 Boise D Olson Extensible prop
US3272288A (en) * 1964-09-18 1966-09-13 Sperry Rand Corp Friction brake
WO2020209731A1 (en) * 2019-04-12 2020-10-15 Viking Arm AS Lowering mechanism for hand held jacking tool
US11554473B2 (en) 2019-04-12 2023-01-17 Viking Arm AS Lowering mechanism for hand held jacking tool
WO2024132479A1 (en) 2022-12-23 2024-06-27 Bessey Tool Gmbh & Co. Kg Lifting clamp
DE102022134752A1 (en) 2022-12-23 2024-07-04 Bessey Tool Gmbh & Co. Kg Lifting clamp

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