GB721616A - Mechanical jacks - Google Patents

Mechanical jacks

Info

Publication number
GB721616A
GB721616A GB1228352A GB1228352A GB721616A GB 721616 A GB721616 A GB 721616A GB 1228352 A GB1228352 A GB 1228352A GB 1228352 A GB1228352 A GB 1228352A GB 721616 A GB721616 A GB 721616A
Authority
GB
United Kingdom
Prior art keywords
rack
spring
handle
pawl
arm
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
GB1228352A
Other languages
English (en)
Inventor
Theo Sherwen
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.)
Lister & Co Ltd R A
RA Lister and Co Ltd
Original Assignee
Lister & Co Ltd R A
RA Lister and Co 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 Lister & Co Ltd R A, RA Lister and Co Ltd filed Critical Lister & Co Ltd R A
Priority to GB1228352A priority Critical patent/GB721616A/en
Priority to FR1076859D priority patent/FR1076859A/fr
Priority to BE519927D priority patent/BE519927A/fr
Publication of GB721616A publication Critical patent/GB721616A/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
    • B66F1/00—Devices, e.g. jacks, for lifting loads in predetermined steps
    • B66F1/02—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts
    • B66F1/04—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts the posts being toothed
    • B66F1/06—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts the posts being toothed and the devices being actuated mechanically

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Control Devices (AREA)
  • Portable Nailing Machines And Staplers (AREA)
GB1228352A 1952-05-15 1952-05-15 Mechanical jacks Expired GB721616A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1228352A GB721616A (en) 1952-05-15 1952-05-15 Mechanical jacks
FR1076859D FR1076859A (fr) 1952-05-15 1953-05-12 Vérin mécanique à crémaillère utilisable notamment dans les travaux agricoles
BE519927D BE519927A (enrdf_load_stackoverflow) 1952-05-15 1953-05-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1228352A GB721616A (en) 1952-05-15 1952-05-15 Mechanical jacks

Publications (1)

Publication Number Publication Date
GB721616A true GB721616A (en) 1955-01-12

Family

ID=10001710

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1228352A Expired GB721616A (en) 1952-05-15 1952-05-15 Mechanical jacks

Country Status (3)

Country Link
BE (1) BE519927A (enrdf_load_stackoverflow)
FR (1) FR1076859A (enrdf_load_stackoverflow)
GB (1) GB721616A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE519927A (enrdf_load_stackoverflow) 1955-05-27
FR1076859A (fr) 1954-11-02

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