Seilklemme von Umlaufbahn

zerlegte Seilklemme, der Emmetten-Stockhütte Umlaufbahn, von Müller Gerhard Maschinenbau AG

Dating

1968, in Betrieb bis 2007

Persons

Müller Gerhard Maschinenbau AG (1947), Hersteller/in, archivalisch belegt

Gondelbahn Emmetten-Stockhütte (1968), Betreiber/in oder Benutzer/in, archivalisch belegt

Description

Zerlegte Seilklemme, der Emmetten-Stockhütte Umlaufbahn, von Müller Gerhard Maschinenbau AG Als einzige Schweizer Klemme der ersten Generation ist die Müller-Klemme nicht auf die Gravitation angewiesen und basiert ausschliesslich auf der Kraft einer integrierten Tellerfeder. Ein Zahnrad, welches in der Station über eine Zahnschiene betätigt wird, spannt bzw. entlastet die Tellerfeder. Auf diese Weise werden zwei fixe Endstellungen erreicht (Patent CH284670).

Object type

Object (three-dimensional)

Geography

Territorium: Emmetten - Stockhütte (Klewenalp, Beckenried)

Material / Technique

Metall

Inventory number

VHS-9334.01

Legend

GMD/C, Gerhard Müller Dietlikon, cup spring assembly screw clamp, 1955 On entering the terminus, the cogwheel engages with a toothed track to open the cup spring assembly of the screw clamp, which then takes up a position just above the circulating cable. On leaving the station, the cable grip's cogwheel disengages from the toothed rail below, thus allowing the grip to clamp the cable again. The previous version was deployed on the Hochstuckli in 1950 and was replaced by this later version in 1955. The cable grip innovation The device attaching the chair or gondola to the cable is the central component of any detachable-grip cableway. The invention of a device capable of gripping as well as detaching itself from the propelling cable opened up a whole new world to the cableway industry. The concept has benefited mountain tourism as well as, more latterly, mass transit systems in cities. The first chairlifts featured chairs that were permanently clamped to the circulating cable, which made getting on and off at a constant speed of around 2 m/s something of a challenge. The detachable grip system allows the vehicle (chair or gondola) to be freed from the cable at the terminus and guides it onto a separate, propelling system travelling at less than 0.8 m/s. While rows of rubber tyre wheels slow the vehicle down, the otherwise free-hanging wheels of the cable grip mechanism run on their own rails in the terminus. When the vehicle's cable grip attaches itself back onto the circulating propelling cable, the vehicle returns to its considerably higher speed of between 4 and 8 m/s. The technology underpinning the detachable grip – now capable of exerting a pressure on the cable in excess of 600 kg – and the terminus circulation system have become increasingly sophisticated. The invention of the detachable grip quickly led to a boom in the chairlift segment. The circulating cableway system, to this day, owes its success as a transportation system to its key component – the detachable cable grip.