Barrier improvements

Abstract

A barrier having an upper elongate support and a lower elongate support, and a two-wire tensioning assembly with two only substantially vertical portions extending between the upper and lower elongate supports, with two wires each attached through a spreader, the spreader having a threaded aperture and a shaft threadably engaging the aperture and being positioned to either directly or indirectly engage a one of the elongate supports, where rotation of the shaft relative to the spreader will effect a change in tensioning of both substantially vertical portions of the wires at the same time.

1 . A barrier comprising:
 an upper elongate support and a lower elongate support which is parallel to the upper elongate support, and a two-wire tensioning assembly with two only substantially vertical portions extending between the upper and lower elongate supports, there being either one wire being a separate length of wire having a single length with thereby two respective ends, each end anchored at a position which is spaced apart one from the other, one end being secured directly or indirectly to a first of the elongate supports and the other end being secured to the same elongate support, one wire between its respective substantially vertical portions providing a loop portion which is inter-engaging with either a spreader which engages between the vertical portions keeping them separate, or the support oppositely positioned to the spreader, or there being two wires each being a separate length of wire with one end secured either directly or indirectly to, in each case, a one of the supports but spaced apart one from the other, and in the case of the other end in each case, with the other support either directly or indirectly, and where, by being indirectly attached, is by being attached through the spreader, the spreader in every case having a threaded aperture and a shaft threadably engaging the aperture and being positioned to either directly or indirectly engage a one of the elongate supports, where rotation of the shaft relative to the spreader will effect a change in tensioning of both substantially vertical portions of the wire or wires at the same time.   
     
     
         2 . The barrier of  claim 1 , wherein each wire at each respective end is bulbous and as such, is inter-engaging with a respective aperture either in a one or other of the supports or a one or other of ends which are oppositely positioned of the spreader. 
     
     
         3 . The barrier as in  claim 2 , wherein each wire is effected as having a bulbous end by having a ferrule swaged at or close to a respective end of the respective wire. 
     
     
         4 . A barrier as in  claim 1 , wherein at least one of the supports is comprised of a hollow tube. 
     
     
         5 . A barrier as in  claim 1 , wherein the threaded shaft includes at least at one end, a shape adapted to provide for an interlocking relationship with a rotation driver. 
     
     
         6 . A barrier as in  claim 1 , wherein such a rotation driver is, in one case, a spanner, or in another case a screwdriver. 
     
     
         7 . A barrier as in  claim 1 , wherein the lower support is a tubular member extending cross-wise to the otherwise vertical portions of the wires, and there is provided a lower most aperture through which the spreader is adapted to be located. 
     
     
         8 . A barrier as in  claim 1 , wherein there is a pad where the shaft may be expected to engage against the tube and exert pressure to maintain the tension. 
     
     
         9 . A barrier as in  claim 7 , wherein there is a guide which fits within the tube and the spreader being a rectangular member with elongate sides, has a relatively slidable fit up and down the sides of the guide. 
     
     
         10 . A barrier as in  claim 9 , wherein the guide is a member having a U-shape cross-sectional shape and having a length substantially that of the spreader and having heights of its sides sufficient that its upper end will be adapted to engage respective inner surfaces on each side of the pipe forming an either upper or lower support. 
     
     
         11 . A barrier as in  claim 10 , wherein the guide is held in position either by rotatable inter-engagement with the shaft or by an interference fit with an aperture into which it is introduced. 
     
     
         12 . A barrier as in  claim 1 , wherein ends of the wires which are themselves not inter-engaging with the spreader are effecting an interlocking engagement with an oppositely positioned support where there is at least one keyhole having a shape arranged where in one position with respect to the keyhole, the bulbous end of a wire can pass through, and in a further position within the keyhole, it is intercepted from passing there through. 
     
     
         13 . A method of effecting a barrier comprising an upper elongate support and a lower elongate support which is parallel to the upper elongate support, and a two-wire tensioning assembly with two only substantially vertical portions extending between the upper and lower elongate supports, there being either one wire being a separate length of wire having a single length with thereby two respective ends, each end anchored at a position which is spaced apart one from the other, one end being secured directly or indirectly to a first of the elongate supports and the other end being secured to the same elongate support, one wire between its respective substantially vertical portions providing a loop portion which is inter-engaging with either a spreader which engages between the vertical portions keeping them separate, or the support oppositely positioned to the spreader, or there being two wires each being a separate length of wire with one end secured either directly or indirectly to, in each case, a one of the supports but spaced apart one from the other, and in the case of the other end in each case, with the other support either directly or indirectly, and where, by being indirectly attached, is by being attached through the spreader, the spreader in every case having a threaded aperture and a shaft threadably engaging the aperture and being positioned to either directly or indirectly engage a one of the elongate supports, the method comprising:
 effecting inter-engaging of the respective ends of the respective wires with the spreader; and   rotating the shaft relative to the spreader whereby to effect an increase in tension of both substantially vertical portions of the wire at the same time.   
     
     
         14 . A barrier as in  claim 8 , wherein there is a guide which fits within the tube and the spreader being a rectangular member with elongate sides, has a relatively slidable fit up and down the sides of the guide. 
     
     
         15 . A barrier as in  claim 9 , wherein the guide is held in position either by rotatable inter-engagement with the shaft or by an interference fit with an aperture into which it is introduced.