GB857353A - Loft ladders - Google Patents
Loft laddersInfo
- Publication number
- GB857353A GB857353A GB2027558A GB2027558A GB857353A GB 857353 A GB857353 A GB 857353A GB 2027558 A GB2027558 A GB 2027558A GB 2027558 A GB2027558 A GB 2027558A GB 857353 A GB857353 A GB 857353A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- arm
- loft
- saddle
- bears
- 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
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/04—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ladders (AREA)
Abstract
857,353. Ladders. BERNER, P. Aug. 11, 1959 [June 24, 1958], No. 20275/58. Class 20(2) A loft ladder 1 is connected to a bracket 6 mounted on the loft floor 7 by two radius arms 3 pivoted at 2 and 4 and is urged upwards by a coil spring 8 one end 10 of which bears on a saddle 12 adjustably mounted on each arm 3 while the other end 9 bears on a rod 11 adjustably mounted in the bracket 6. The effect of the spring 8 may be varied by moving the rod 11 to other holes 15 and by shifting the saddles 12 along the arms 3. The pivot rod 4 also has other positions 14. In another embodiment (Fig. 2, not shown) the saddle 12 is replaced by a rod adjustably positioned between the ends of a bifurcated radius arm, two springs instead of one engaging the arm at different stages of operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2027558A GB857353A (en) | 1958-06-24 | 1958-06-24 | Loft ladders |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2027558A GB857353A (en) | 1958-06-24 | 1958-06-24 | Loft ladders |
Publications (1)
Publication Number | Publication Date |
---|---|
GB857353A true GB857353A (en) | 1960-12-29 |
Family
ID=10143285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2027558A Expired GB857353A (en) | 1958-06-24 | 1958-06-24 | Loft ladders |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB857353A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5174411A (en) * | 1990-09-28 | 1992-12-29 | Abru Aluminium Limited | Ladder improvements |
-
1958
- 1958-06-24 GB GB2027558A patent/GB857353A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5174411A (en) * | 1990-09-28 | 1992-12-29 | Abru Aluminium Limited | Ladder improvements |
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