GB255674A - Improvements in or relating to lifting jacks - Google Patents
Improvements in or relating to lifting jacksInfo
- Publication number
- GB255674A GB255674A GB2276925A GB2276925A GB255674A GB 255674 A GB255674 A GB 255674A GB 2276925 A GB2276925 A GB 2276925A GB 2276925 A GB2276925 A GB 2276925A GB 255674 A GB255674 A GB 255674A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pillar
- links
- base
- crutch
- pivot
- 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
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
- B66F5/00—Mobile jacks of the garage type mounted on wheels or rollers
- B66F5/02—Mobile jacks of the garage type mounted on wheels or rollers with mechanical lifting gear
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Rehabilitation Tools (AREA)
Abstract
255,674. Bradbury, L. Sept. 11, 1925. Jacks. -A lifting-jack of the kind having an extended lift and in which the load is supported by pawl and rack mechanism, has an operating handle 4 mounted on a pivot 5 on the base 1 and having an extension provided with a pivot 6 carrying the pillar 7. The pillar has a slot 21 which guides a transverse pin 20 on a sleeve 9<1> sliding in the pillar and carrying the crutch 8 which is adjustable therein in the usual way. The transverse pin 20 is connected by links 19 to links 14 mounted on pivots 15 on the base and having a pivotal connection 16 to the pillar. The lower end of the pillar has a ratchet and pawl connection 12 with the base. In operation, the lever 4 is depressed so that the pillar 7 is raised and so raises the floating fulcrum 16, which through the mechanical advantage of the links 14 gives an additional lift to the sleeve 9<1> and crutch 8. The arrangement of the linkages and ratchet mechanism may be varied.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2276925A GB255674A (en) | 1925-09-11 | 1925-09-11 | Improvements in or relating to lifting jacks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2276925A GB255674A (en) | 1925-09-11 | 1925-09-11 | Improvements in or relating to lifting jacks |
Publications (1)
Publication Number | Publication Date |
---|---|
GB255674A true GB255674A (en) | 1926-07-29 |
Family
ID=10184772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2276925A Expired GB255674A (en) | 1925-09-11 | 1925-09-11 | Improvements in or relating to lifting jacks |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB255674A (en) |
-
1925
- 1925-09-11 GB GB2276925A patent/GB255674A/en not_active Expired
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