GB337168A - A new or improved ratchet mechanism for use in lifting jacks and other apparatus - Google Patents
A new or improved ratchet mechanism for use in lifting jacks and other apparatusInfo
- Publication number
- GB337168A GB337168A GB3058829A GB3058829A GB337168A GB 337168 A GB337168 A GB 337168A GB 3058829 A GB3058829 A GB 3058829A GB 3058829 A GB3058829 A GB 3058829A GB 337168 A GB337168 A GB 337168A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- handle
- ratchet
- jack
- pawls
- 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
- 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
- B66F3/14—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through pawl-and-ratchet mechanisms
-
- 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
- B66F3/16—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through bevel-wheel gearings
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)
Abstract
337,168. Smith, A. B., and Smith, C. R. Oct. 9, 1929. Jacks.-Ratchet gearing for operating mechanism such as a lifting-jack of the kind in which the lifting pillar is operated by screw-and-nut mechanism actuated by a hand-lever through ratchet mechanism, comprises a pair of opposed spring-pressed pawls mounted on a disc and engagable with a ratchet wheel, a handle with a projection being inserted between the pawls to disengage either pawl. As applied to a screw jack, a disc k carries a pair of spring-pressed pawls o normally engaging ratchet teeth n on a bevel wheel m which drives the usual bevel wheel nut b on the lifting pillar c. A handle s carrying a pin u can be inserted into a socket r on the disc and is partially rotated to disengage either pawl. By oscillating the handle the ratchet is driven and the jack raised. When the handle is removed and both pawls are engaged, a quick lift is obtained by rotating the disc k by hand. In a modification the handle is arranged for horizontal movement and the disc has a sleeve extension mounted on the jack casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3058829A GB337168A (en) | 1929-10-09 | 1929-10-09 | A new or improved ratchet mechanism for use in lifting jacks and other apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3058829A GB337168A (en) | 1929-10-09 | 1929-10-09 | A new or improved ratchet mechanism for use in lifting jacks and other apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB337168A true GB337168A (en) | 1930-10-30 |
Family
ID=10309980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3058829A Expired GB337168A (en) | 1929-10-09 | 1929-10-09 | A new or improved ratchet mechanism for use in lifting jacks and other apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB337168A (en) |
-
1929
- 1929-10-09 GB GB3058829A patent/GB337168A/en not_active Expired
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