GB828631A - Improvements relating to screw operated lifting jacks - Google Patents

Improvements relating to screw operated lifting jacks

Info

Publication number
GB828631A
GB828631A GB402857A GB402857A GB828631A GB 828631 A GB828631 A GB 828631A GB 402857 A GB402857 A GB 402857A GB 402857 A GB402857 A GB 402857A GB 828631 A GB828631 A GB 828631A
Authority
GB
United Kingdom
Prior art keywords
operated lifting
improvements relating
lifting jacks
screw operated
screw
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
GB402857A
Inventor
James Webb
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.)
PRIMA IND Ltd
Original Assignee
PRIMA IND 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 PRIMA IND Ltd filed Critical PRIMA IND Ltd
Priority to GB402857A priority Critical patent/GB828631A/en
Publication of GB828631A publication Critical patent/GB828631A/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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

828,631. Lifting-jacks. PRIMA INDUSTRIES Ltd. Jan. 27, 1958 [Feb. 6, 1957], No. 4028/57. Addition to 828,341. Drawings to Specification. Class 78 (3). In the screw-operated lifting-jack of the parent Specification, the bevel gears for rotating the screw shaft are replaced by a head, formed on the top of the screw shaft and adapted to be engaged by a tool to rotate the shaft.
GB402857A 1957-02-06 1957-02-06 Improvements relating to screw operated lifting jacks Expired GB828631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB402857A GB828631A (en) 1957-02-06 1957-02-06 Improvements relating to screw operated lifting jacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB402857A GB828631A (en) 1957-02-06 1957-02-06 Improvements relating to screw operated lifting jacks

Publications (1)

Publication Number Publication Date
GB828631A true GB828631A (en) 1960-02-17

Family

ID=9769362

Family Applications (1)

Application Number Title Priority Date Filing Date
GB402857A Expired GB828631A (en) 1957-02-06 1957-02-06 Improvements relating to screw operated lifting jacks

Country Status (1)

Country Link
GB (1) GB828631A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5906356A (en) * 1996-10-22 1999-05-25 Stratman; Cletus J. Adjustable lifting apparatus
US6113044A (en) * 1998-03-30 2000-09-05 Stratman; Cletus J. Self-adjusting furniture lifting bracket assembly
US6435476B1 (en) 2000-05-16 2002-08-20 Cletus J. Stratman Self-adjusting furniture lifting bracket assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5906356A (en) * 1996-10-22 1999-05-25 Stratman; Cletus J. Adjustable lifting apparatus
US6113044A (en) * 1998-03-30 2000-09-05 Stratman; Cletus J. Self-adjusting furniture lifting bracket assembly
US6435476B1 (en) 2000-05-16 2002-08-20 Cletus J. Stratman Self-adjusting furniture lifting bracket assembly

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