Implements or apparatus for applying pushing or pulling force – Device or member for contacting and guiding moving cable – Including rotatable – cable contacting – pulley wheel element
Patent
1986-10-27
1988-08-30
Levy, Stuart S.
Implements or apparatus for applying pushing or pulling force
Device or member for contacting and guiding moving cable
Including rotatable, cable contacting, pulley wheel element
182 43, 182 73, 254411, A62B 108, B66D 304
Patent
active
047671017
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a cable pulley arrangement comprising a pulley which is freely rotatable on a suspension device, and a cable which passes over the pulley and which in the unwound condition hangs down on both sides of the pulley.
It is known that, for example when considering fires in multi-storey buildings, one of the difficult problems which hitherto has been only partially solved is that of rescuing people who are on the upper storeys, that is to say, removing them from the area of danger. It is only in the rarest cases that the ladders available to a fire brigade can reach the tenth storey. With regard to higher storeys, rescue is only possible from the air, for example by means of a helicopter. In that situation, apart from the high costs involved, the problem which occurs is that it is not possible for a number of helicopters to operate in a rather small air space, for safety reasons. Consequently, only a very limited number of people can be removed from the building by the helicopter and the evacuation of the people concerned takes up a very great deal of time, and in many cases, the amount of time involved is not adequate.
SUMMARY OF THE INVENTION
The object of the present invention is therefore to provide a cable pulley arrangement of the kind set forth above and which can be used in particular for rescuing people from multi-storey buildings or skyscrapers. A cable pulley arrangement of that kind is preferably fixed to the edge of the roof adjacent the facade or front of the building.
This object according to the invention is solved in that a lock means which is remotely releasable, for example by means of a release line, and which blocks the pulley, is provided on a suspension device, of the cable pulley arrangement wherein the blocked condition of the pulley the cable is wound thereon, more specifically in such a way that, of the unwound cable whose two end runs hang down over approximately equal lengths on both sides of the pulley, an end run or portion is taken in a loop to the other end run or portion and the two end runs are wound on in the same direction, and that a weight hangs on both ends of the cable.
The cable pulley arrangement according to the invention permits the release line to be actuated from below, that is to say, from the ground floor of the building, whereupon the lock means is released, and the cable is pulled to the ground by the weight which is hung thereon, and is unrolled from the pulley. Using a cable which is relatively thin, for example a nylon cable, so that it can be wound on the pulley, it is then possible for a stronger cable which is capable of carrying a load to be pulled over the pulley. When that stronger cable is secured at one end to a winch or even a vehicle, for example a lorry, then for example a basket or a cabin can be pulled up the outside wall of the building to the top storey thereof.
With such a cabin, it would be easy to evacuate people in danger, from the individual storeys of the building, without putting them at risk.
Even if, with regard to the use of the cable pulley arrangement according to the invention, consideration is given more particularly to rescue functions, it is not restricted thereto. For example the cable pulley arrangement according to the invention may be used in the above-described manner in order to carry out maintenance operations on the facade of a building. The use of the cable pulley arrangement is also not restricted to buildings. Thus the cable pulley arrangement according to the invention could also be used in relation to cable car installations, once again for carrying out maintenance operations, or also for possibly bringing passengers down from stranded cable cars or the like, by a roping-down operation.
In order to facilitate the step of winding on the cable, it is advantageously provided in accordance with the invention that a magnet is disposed at the periphery of the pulley and an iron plumb weight or the like is disposed on the cable.
An embodiment of the invention has a r
REFERENCES:
patent: 291326 (1884-01-01), French
patent: 692847 (1902-02-01), Goodfellow
patent: 996803 (1911-07-01), Schnoor
patent: 1350708 (1920-08-01), Davis
patent: 1451557 (1923-04-01), Toth et al.
patent: 2806380 (1957-09-01), Martin
patent: 2872047 (1959-02-01), Ostlund
patent: 3062477 (1962-11-01), Horning
patent: 3860092 (1975-01-01), Holmes
patent: 4492363 (1985-01-01), Niskin
Hail III Joseph J.
Innoma Innovation-Marketing Patentverwertungs Ges.m.b.H.
Levy Stuart S.
LandOfFree
Cable pulley does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cable pulley, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cable pulley will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2083532