Patent ID: 6877942

Claim:
Apparatus for positioning oilfield drill collars at the floor of a service rig having elevators and located over a wellhead at a well site, comprising: a wheeled vehicle having a horizontal frame supporting a pair of parallel, laterally spaced-apart tracks extending lengthwise of the frame, the vehicle having front and rear ends; a horizontal carriage having front and rear rollers supported by the tracks, said carriage being operative to roll along the tracks; means, connected between the frame and the carriage, for advancing and retracting the carriage along the tracks; a flat bed carried by the carriage means for pivotally connecting and securing the front end of the bed with the front end of the carriage, whereby the front end of the bed is hinged to the front end of the carriage and the rear end of the bed is free to be raised; means, connected between the carriage and the bed, for raising the rear end of the bed; the bed having means, on its upper surface, for supporting, retaining and guiding a plurality of drill collars.