Equipment support leg and leveler with retractable castor

Abstract

An equipment support leg providing a multiplicity of functions. Static applications are addressed through a threaded shaft and foot. The improved foot is bolted into support legs in such a way as to allow swiveling desirable for conforming to grounds. Mobile applications are addressed through a modified castor. The castor may be lowered to the ground or retracted into a safe position by use of a handle attached to a bearing. Jacking or leveling needs are met by use of the leveler handle which is attached to a bearing, located near the top of threaded shaft. Therefore, one support leg converts from stationary capabilities to mobile capacities, and converts back again into the original stationary position.

We claim  
     
         1 . A combination objection support leg and jacking device with a retractable rolling castor comprising: 
 a. a jack element which supports an object or portion of an object and of which a portion is threaded    b. an elongated threaded shaft on which the threads of the threaded portion of said jack element are meshed and supported, causing said jack element and the object of portion of object it supports to be moved along the length of said elongated threaded shaft when the threaded portion of said jack element is rotated around said elongated threaded shaft    c. a second jack element comprised of a threaded portion and a non-threaded portion, which are fixed together as a single unit, while being able to rotate independently with respect to one another around a common axis, the threads of the threaded portion of said second jack element are meshed with and supported by the threads of said threaded elongated shaft, causing the second jack element to move along the length of said threaded elongated shaft when the threaded portion of the second jack element is rotated around said threaded elongated shaft    d. a support frame which is attached to the non-threaded portion of said second jack element, both being free to rotate together with respect to said elongated threaded shaft without causing said second jack element to move along the shaft, with the result of the non-threaded portion of said second jack element being able to rotate independently with respect to the threaded portion of said second jack element; conversely the combined said support frame and said second jacking element can also be made to move together along said threaded elongated shaft without the step support from being rotated with respect to said elongated threaded shaft, this being accomplished by rotating the threaded portion of said second jacking element only.    e. a castor element attached to one end of said elongated threaded shaft, which support the shaft and which by enabling a rolling movement along a supporting surface allows the elongated shaft and all said elements it supports, including the object or the portion of object supported by said jacking element, to be moved along the support surface,    whereby said castor can rotate freely around the elongated threaded shaft, the shaft and all said elements and the object or portion of object it supports can be rolled by the castor in any direction along a supporting surface without the scaffolded object or supported portion of object being rotated with respect to the shaft,    whereby said support frame can be moved along the length of the elongated threaded shaft without rotating said elongated threaded shaft the support frame can be moved to a position where it is in contact with the supporting surface, thereby supporting the shaft and all said elements it supports, whereby said castor can be moved off and away from the supporting surface, while the support frame remains in contact with the supporting surface, by counter rotating said jack element and said second element, the support frame is made to support said elongated threaded shaft and all said elements said threaded shaft supports including the supported object, thus converting all the combined said elements into a fixed non-rolling support structure.