GB190005285A - Improvements in Girders for the Construction of Bridges, Elevators, and other purposes. - Google Patents
Improvements in Girders for the Construction of Bridges, Elevators, and other purposes.Info
- Publication number
- GB190005285A GB190005285A GB190005285DA GB190005285A GB 190005285 A GB190005285 A GB 190005285A GB 190005285D A GB190005285D A GB 190005285DA GB 190005285 A GB190005285 A GB 190005285A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bars
- platform
- guides
- move
- purposes
- 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
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
5285. James, H. B. March 20. Lifts.-Relates to a lazy-tongs arrangement of pivoted bars forming an expanding girder, applicable to lifts, fireescapes, and other purposes. The form shown in elevation in Fig. 1 applied to a lift platform E, consists of bars A, A', a, a<1> pivoted together and connected by transverse rods B, D to parallel bars forming similar lazytongs. The lower ends of the bars a, a<1> are fixed to the support C and move on rollers r in guides R respectively. The upper ends of the bars A, A' are fixed to the platform E and move a slide g on the platform respectively, the slide being operated by means of the screwed rod F rotated from a hand-wheel carried on the platform. In modifications, the lower ends of all the bars a, a<1> may move on rollers in guides ou the support C and the ends may be secured to pistons controlled by springs or hydraulic power. The rods B, D may be replaced by transverse levers arranged to form lazy-tongs ; the guides for the ends of the levers a, a<1>, A, A<1> are then arranged diagonally.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190005285T | 1900-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190005285A true GB190005285A (en) | 1901-02-23 |
Family
ID=32361478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190005285D Expired GB190005285A (en) | 1900-03-20 | 1900-03-20 | Improvements in Girders for the Construction of Bridges, Elevators, and other purposes. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190005285A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3832913A1 (en) * | 1988-09-28 | 1990-04-05 | Mueller Christoph | Lifting stage |
-
1900
- 1900-03-20 GB GB190005285D patent/GB190005285A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3832913A1 (en) * | 1988-09-28 | 1990-04-05 | Mueller Christoph | Lifting stage |
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