79 which is secured in place in any customary or suitable manner such as by the illustrated hex nut 81 and washer 82 the longitudinal portion is permanently secured to the transverse portion in any suitable or customary manner in the embodiment which is illustrated in fig1 the manner by which the longitudinal portion is secured to the transverse portion is an arrangement which can provide for some limited rotation of the longitudinal portion with respect to the transverse portion to the extent such might be necessary to facilitate attachment and disattachment action in fig1 an eye bolt 83 is a primary component of the longitudinal portion of the second securement component 46 bolt 79 passes through its eye 84 which effectively secures this longitudinal portion of the t shaped assembly to its transverse portion continuing further with the embodiment illustrated in fig1 an extension nut 85 in combination with lock washer 86 secures the clamp 73 to the mounting bracket assembly 32 further details regarding the operation of the specific embodiment that is illustrated in fig1 and fig1 are found in fig1 13 and 14 these figures illustrate generally the sequence of operations by which the respective locations of various components are transformed or used to move from a storage position as shown in fig1 through a working position as shown in fig1 at the storage positions shown in fig1 the extension nut 85 and the lock washer 86 are positioned along the handle wrench 71 which is stowed on a projecting shelf 72 the storage position of illustrated quick pin 87 is within storage openings 88 89 fig1 t shaped securement component comprising transverse bolt 79 and longitudinal.