GB337587A - Improvements in or relating to safety ladders for roofing, scaffolding, trestles, and extending ladders - Google Patents
Improvements in or relating to safety ladders for roofing, scaffolding, trestles, and extending laddersInfo
- Publication number
- GB337587A GB337587A GB3214329A GB3214329A GB337587A GB 337587 A GB337587 A GB 337587A GB 3214329 A GB3214329 A GB 3214329A GB 3214329 A GB3214329 A GB 3214329A GB 337587 A GB337587 A GB 337587A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ladder
- ladders
- scaffolding
- bolts
- trestles
- 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
-
- 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
- E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like
- E06C1/345—Ladders attached to structures, such as windows, cornices, poles, or the like specially adapted to be installed parallel to the roof surface
-
- 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
- E06C1/32—Ladders with a strut which is formed as a ladder and can be secured in line with the ladder
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
- E06C7/488—Supports specially adapted to attach a ladder to a ridge of a roof
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
337,587. Mansfield, T. E. Oct. 23, 1929. Ladders; scaffolding.-A convertible long and step ladder comprises two ladder portions, one of greater width than the other, adapted to be hinged together on bolts 5 so as to provide ladder extensions to which are secured, by nuts and bolts, flat metal straps 7 acting as stays to secure the ladder portions in adjusted angular positions. The stays may fit between the extension of one ladder portion and the main portion of the other ladder, as shown at 10. When used as an extension ladder, the bolts 5 are removed and the one ladder portion slides on the rungs of the wider ladder portion in guiding brackets 15.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3214329A GB337587A (en) | 1929-10-23 | 1929-10-23 | Improvements in or relating to safety ladders for roofing, scaffolding, trestles, and extending ladders |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3214329A GB337587A (en) | 1929-10-23 | 1929-10-23 | Improvements in or relating to safety ladders for roofing, scaffolding, trestles, and extending ladders |
Publications (1)
Publication Number | Publication Date |
---|---|
GB337587A true GB337587A (en) | 1930-11-06 |
Family
ID=10333952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3214329A Expired GB337587A (en) | 1929-10-23 | 1929-10-23 | Improvements in or relating to safety ladders for roofing, scaffolding, trestles, and extending ladders |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB337587A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2450935A1 (en) * | 1979-03-08 | 1980-10-03 | Hortala Charles | Multi-purpose inter-connectable ladder section - has rung spacing to allow fitting of still ends for fixing by sprung bolts in matching apertures |
GB2190420A (en) * | 1986-05-14 | 1987-11-18 | Michael John Moore | Roof supported frame for ladders |
DE8708416U1 (en) * | 1987-06-15 | 1987-11-26 | Müller, Hans, 3569 Günterod | Ladder for bridging a roof ridge |
-
1929
- 1929-10-23 GB GB3214329A patent/GB337587A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2450935A1 (en) * | 1979-03-08 | 1980-10-03 | Hortala Charles | Multi-purpose inter-connectable ladder section - has rung spacing to allow fitting of still ends for fixing by sprung bolts in matching apertures |
GB2190420A (en) * | 1986-05-14 | 1987-11-18 | Michael John Moore | Roof supported frame for ladders |
GB2190420B (en) * | 1986-05-14 | 1990-02-07 | Michael John Moore | Roof supported frame for ladders |
DE8708416U1 (en) * | 1987-06-15 | 1987-11-26 | Müller, Hans, 3569 Günterod | Ladder for bridging a roof ridge |
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