Abstract: A powered loop stand includes a frame having a base, first and second substantially parallel substantially vertical columns attached at their bottoms to the base, and at least one across support between the columns. A driven roller is supported for rotation about a substantially horizontal axis by the columns adjacent the top of each, typically between about four and five feet from the base. A number (e.g. three) of vertically spaced loop sensors are mounted by the frame between the columns so that their positions with respect to the driven roller are adjustable, e.g. mounted by vertical support with a bracket or collar frictionally engaging the support. A variable speed electric motor having an output shaft with a drive pulley is mounted within the column and a drive belt directly engages a peripheral surface of the roller and the pulley to drive the roller. The sensors are operatively connected to the motor for controlling its speed of operation.

Abstract: A mounting device for mounting a machine element to a shaft, particularly in critical timing and high torque applications, is specifically adapted to be frequently assembled and disassembled without coming apart or in any way adversely affecting the operation of the mounting device. The mounting device includes an inner tubular element, an outer segmented tubular element, and a tubular nut. A through extending radial opening is provided in each segment of the outer element, and a circumferential groove in the outer surface of the inner element with first and second axially spaced radially extending walls.