GB814546A - Improvements in extensible ladders - Google Patents
Improvements in extensible laddersInfo
- Publication number
- GB814546A GB814546A GB1827656A GB1827656A GB814546A GB 814546 A GB814546 A GB 814546A GB 1827656 A GB1827656 A GB 1827656A GB 1827656 A GB1827656 A GB 1827656A GB 814546 A GB814546 A GB 814546A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cable
- channels
- lower section
- section
- hoist
- 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
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/12—Lifts or other hoisting devices on ladders
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
- E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
- E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
814,546. Ladders. RAMSEY & SONS (FORFAR) Ltd. Sept. 4, 1957 [June 13, 1956], No. 18276/56. Class 20(2) [Also in Group XXX] An extensible ladder has the stiles of the upper and lower sections (15 and 10 respectively) provided with fitting channels 18, 14 within which is a member 19 supporting a hoist 20, 21 connected to a cable which passes over a pulley at the upper end of the upper section and is wound on a drum at the foot of the lower section. (Fig. 2, not shown, illustrates the arrangement of the cable.) The channels 18, 14 may be lined with or formed of aluminium. The member 19 may consist of a spring-loaded rod 30 housing two spindles 31 carrying ball heads 29 which take up the difference between the channels 18, 14 as the platform 21 ascends from the lower to the upper section. To extend the ladder the cable is detached from the hoist 20, passed over a pulley on the top rung of the lower section and attached to an eye on the foot rung of the lower section which may be reinforced by a metal sleeve and screwed end plates (Fig. 2, not shown).
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB814546A true GB814546A (en) | 1959-06-10 |
Family
ID=1733791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1827656A Expired GB814546A (en) | 1956-06-13 | Improvements in extensible ladders |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB814546A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493079A (en) * | 1967-12-18 | 1970-02-03 | Dallas L Dudschus | Foldable,adjustable height platform assembly mountable on a vehicle |
| GB2122572A (en) * | 1982-06-05 | 1984-01-18 | Nyman Curt Lennart | Working platform for extensible ladder or ladder-like mast |
| GB2274826A (en) * | 1993-02-05 | 1994-08-10 | Scootabout Int Ltd | An apparatus for escalading. |
| BE1027407B1 (en) * | 2019-07-01 | 2021-02-05 | Gw Solution Vof | Ladder lift |
-
1956
- 1956-06-13 GB GB1827656A patent/GB814546A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493079A (en) * | 1967-12-18 | 1970-02-03 | Dallas L Dudschus | Foldable,adjustable height platform assembly mountable on a vehicle |
| GB2122572A (en) * | 1982-06-05 | 1984-01-18 | Nyman Curt Lennart | Working platform for extensible ladder or ladder-like mast |
| GB2274826A (en) * | 1993-02-05 | 1994-08-10 | Scootabout Int Ltd | An apparatus for escalading. |
| GB2274826B (en) * | 1993-02-05 | 1997-03-26 | Scootabout Int Ltd | An apparatus for escalading |
| BE1027407B1 (en) * | 2019-07-01 | 2021-02-05 | Gw Solution Vof | Ladder lift |
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