Abstract: A scissor mechanism comprises a pair of opposed jaws. The opposed jaws are defined at one end of a rigid member. At least one rigid member is pivotably engaged to a base plate. The base plate is capable of being coupled to a mobilization structure that is capable of being rolled on the ground. For example, the mobilization structure may comprise a jack or a bolt that is capable of raising and lowering the base plate. The jaws provide a strong grip on a portion of the shelving either under the influence of a strong biasing mechanism or by using a lever action to force one or more of the jaws closed onto the portion of the shelving. A bump stop may be adjusted to impinge on another portion of the shelving, which may prevent the shelving from tipping or sliding within the pair of jaws.

Abstract: A shelving mobilization assembly comprises a support adjustably retained within a channel formed in a pair of castor assemblies, the pair of castor assemblies each include an integrally formed U-shaped cross section between a plurality of castors. The support fits in the channel, and each end of the support and each of the pair of castor assemblies incorporate an interlocking tab and slots arranged such that the interlocking tab engages one of the slots, when the support fits in the channel of each of the pair of castor assemblies. The interlocking tab and corresponding slot adjustably retains the support in the channels of each of the pair of castor assemblies, such that the length between the pair of castor assemblies is defined at a fixed length, when the shelving is supported by the support.