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File:Trispastos scheme.svg

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Deutsch: Darstellung eines römischen Trispastos-Krans. Der Trispastos ("3-Rollen-Zug") stellte den einfachsten römischen Krantyp dar. Er bestand aus Hebebaum, einer Haspel, einem Seil und einem Flaschenzug mit drei Rollen. Dies entspricht einer Übersetzung von 3 zu 1. Ein einzelner Arbeiter an der Haspel konnte - unter der Annahme, dass 50 kg den maximalen Krafteinsatz darstellen, den ein Mann über einen längeren Zeitraum ausüben kann - Lasten von 150 kg heben (3 Rollen x 50 kg).
English: Scheme of an ancient Roman Trispastos crane ("Three-pulley-crane"). Being the simplest Roman crane, the Trispastos consisted of a single-beam jib, a winch, a rope, and a block containing three pulleys. Having thus a mechanical advantage of 3:1, a single man working the winch could raise loads of 150 kg (3 pulleys x 50 kg), assuming that 50 kg represent the maximum effort a man can exert over a longer time period.
Français : Schéma d'une antique grue romaine du type trispastos utilisant trois poulies.
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Based upon : Dienel, Hans-Liudger & Meighörner, Wolfgang: Der Tretradkran, Publication of the Deutsches Museum (Technikgeschichte Series), 2nd ed., München 1997, p.12f.
Author Eric Gaba (Sting - fr:Sting)
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  • Pentaspastos-type crane
    Pentaspastos-type crane

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June 2008

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Date/TimeThumbnailDimensionsUserComment
current14:36, 17 November 2010Thumbnail for version as of 14:36, 17 November 20101,520 × 1,370 (117 KB)StingError correction
23:17, 9 June 2008Thumbnail for version as of 23:17, 9 June 20081,520 × 1,370 (117 KB)Sting== Summary == {{Information |Description={{en|Scheme of an Antic Roman Trispastos crane.}} {{fr|Schéma d'une antique grue romaine du type ''trispastos''.}} |Source=Own work<br/> Based upon : Hans-Liudger Diene

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