Abstract: The invention as described herein consists of a pitch-changing arrangement as may be used in a pedal steel guitar to improve the quality of the sounds emanating therefrom. The invention incorporates a tone ring for transferring the string energy from the neutral position raising lever directly into the guitar cabinet. The invention also allows for the pitch-changing device to be stopped in the raised position by the guitar cabinet slot thus imparting the string energy directly into the guitar cabinet.

Abstract: A 24-hour operable baghouse plant with on-line maintenance features. The filter cartridge, comprising a tube sheet and a plurality of vertically suspended filters, includes a skeletal framework and a plurality of retaining bars traversing the bottoms of the filters to receive a stud projecting from the end cap of each filter. The tube sheet is equipped with retractable locking bars which cooperate with guide and support members attached to the housing walls to wedge the tube sheet to sealing engagement with the housing.

Abstract: A portable self-erecting surge storage system for temporarily storing asphaltic hotmix. The system includes a cylindrical surge bin and an elongate conveyor having a roller yoke at one end thereof to ride a track affixed on the outer surface of the surge bin. The surge bin is pivotally pinned to a subframe to enable hydraulic cylinders to pivot the bin upwardly from a horizontal transit position to an erect operational position. The roller yoke simultaneously travels up the bin track, elevating one end of the conveyor to the top of the erect surge bin. Retraction of the cylinders lowers the bin and conveyor to their transport positions for movement to another construction site.