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
Application number
Inventor
Henry Benson James
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB190005285A publication Critical patent/GB190005285A/en
Expired legal-status Critical Current

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  • 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.
GB190005285D 1900-03-20 1900-03-20 Improvements in Girders for the Construction of Bridges, Elevators, and other purposes. Expired GB190005285A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832913A1 (en) * 1988-09-28 1990-04-05 Mueller Christoph Lifting stage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832913A1 (en) * 1988-09-28 1990-04-05 Mueller Christoph Lifting stage

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