Page 66 - Wire Rope News & Sling Technology - October2019
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         continued from previous page                         each end with a support 48. The cable 36 is configured for
                                                              use with a trolley 1, 2 having a drive wheel 50 which comes
                                                              in contact with and rides on the cable 36. On a conventional
                                                              cable trolley, the seat or device for securing its user is horizon-
                                                              tally orientated in the direction of travel as shown in figure 16
                                                              and incapable of orientation adjustment. A user 40 wishing to
                                                              look in a direction away from this fixed orientation must do so
                                                              by adjusting the user’s body posture and/or neck, making for
                                                              awkward, uncomfortable or even unsafe rides due to changes
                                                              in the user’s center of gravity especially while the trolley is on
                                                              the move. Further, as the present cable trolley is primarily
                                                              used for aerial travel in sight-seeing trips through an environ-
                                                              ment, for instance as shown in figure 16, the applicant has
                                                              discovered the benefits of providing a cable trolley capable of
                                                              horizontal orientation adjustments without significant poten-
         Figure 15: Enlarged view of part C in figure 14.     tial ill effects such as swaying of the cable trolley while the
                                                              horizontal orientation of the cable trolley is being adjusted
         mesh  21 directly facing to the backstage, to facilitate the
         animal trainers and animals to enter the fence.
           The  hoisting  mechanism  3 includes  a winch  31  fixedly
         mounted on the top of the gate and a sling device connected
         with the winch 31. The sling device includes a sling 32 con-
         nected with the winch 31, a slipknot 33 fixedly installed at
         the end of the sling 32 and a lifting ring 34 connected with
         the fence 2. The slipknot 33 is buckled on the lifting ring
         34. The above sling devices include multiple groups, which
         are uniformly arranged in the fence, to ensure the fence is
         stable when lifting. In this embodiment, 2 winches are ad-
         opted, and each winch can drive 6 groups of sling devices
         Cable trolley having evacuation aid
         Pat. 10,336,346  U.S. class 1/1  Int. class B61B 7/00  Figure 17: Diagram depicting a network of cables connecting various
         Inventor: Donald Perry, Branchport, NY.              erected structures.
         Assignee: Donald Perry, Branchport, NY.
           This patent presents a cable trolley adapted to transport a   and/or excessive angular displacement of the carrier when the
         user and allow evacuation of the user at an elevation from a   carrier is disposed substantially perpendicularly with respect
         ground level. The cable trolley includes a connecting member,   to the direction of travel.
         and a carrier configured for accommodating the user. The car-  Figure 18 is a plan view of a cable and trolleys, contrasting
         rier comprises an opening configured for access by the user and   a fixed orientation cable trolley 1 and a flexible orientation
         the connecting member is configured to connect the carrier at a   cable trolley 2. As trolley 1 travels along cable 36 between
         first end of the connecting member to a transport structure at   the two supports 48, its seat 38 is disposed in a direction
         a second end of the connecting member. There is an elongated   parallel to the cable 36, incapable of any other orientations.
         member configured to be attached to the connecting member   Trolley 2, on the other hand, is disposed at an angle 46 from
         at a first end of the elongated member, and a cable, wherein   the direction of travel along the cable 36. It is this capabil-
         a first end of the cable is configured to be attached to a second   ity of the present cable trolley 2 which sets it apart from the
         end of the elongated member and a second end of the cable is   conventional trolley 1.
         configured to substantially reach the ground level.   Figure 19 is a front orthogonal view of one embodiment
           Figure 16  is a prior art diagram depicting the use of a con-  of the present cable trolley, depicting the carrier 18 of the
         ventional cable trolley 1 on a cable 36 simply supported at   trolley  being disposed in  one  orientation.  In  this  orienta-
         its ends using a support 48 on each end. Figure 17 is a dia-
         gram depicting a network of cables connecting various erected
         structures (trees and man-made structures). The cable 36 is
         spanned between two supports 48 and simply supported at

         Figure 16: Diagram depicting the use of a cable trolley on a cable
         simply supported at its ends using a support on each end.

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