GB175514A - Improvements in lifting jacks - Google Patents

Improvements in lifting jacks

Info

Publication number
GB175514A
GB175514A GB228921A GB228921A GB175514A GB 175514 A GB175514 A GB 175514A GB 228921 A GB228921 A GB 228921A GB 228921 A GB228921 A GB 228921A GB 175514 A GB175514 A GB 175514A
Authority
GB
United Kingdom
Prior art keywords
pawl
lifting
lever
spring
notch
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
GB228921A
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 GB228921A priority Critical patent/GB175514A/en
Publication of GB175514A publication Critical patent/GB175514A/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)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

175,514. Tatton, J. Jan. 17, 1921. Jacks.-In a ratchet jack, the member carrying the lifting-pawl is acted on directly and indirectly by the actuating-lever. The pawl-carrying member 33 is slidably mounted in a recess in the jack casing and is maintained in contact with the head 42 of the lever 43 by a spring 34. A link 49 connects the member 33 to a pivoted member 47, which has a projecting part 45 bearing against the head 42. The lifting-pawl 39 and retaining-pawl 51 are provided with pins which engage the bent ends 62, 63 ,Fig. 2, of spring arms 60, 61 carried by a shaft having a laterally projecting arm 64. When the shaft is turned so that a spring pawl 66 mounted in the arm 64 engages the notch 67, the lifting pillar 23 is raised when the lever is actuated, but if the pawl is engaged with the notch 68, the pillar is lowered.
GB228921A 1921-01-17 1921-01-17 Improvements in lifting jacks Expired GB175514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB228921A GB175514A (en) 1921-01-17 1921-01-17 Improvements in lifting jacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB228921A GB175514A (en) 1921-01-17 1921-01-17 Improvements in lifting jacks

Publications (1)

Publication Number Publication Date
GB175514A true GB175514A (en) 1922-02-23

Family

ID=9736927

Family Applications (1)

Application Number Title Priority Date Filing Date
GB228921A Expired GB175514A (en) 1921-01-17 1921-01-17 Improvements in lifting jacks

Country Status (1)

Country Link
GB (1) GB175514A (en)

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