Abstract: A conveyor belt cleaner having at least one blade yieldably mounted on a blade support assembly for scraping an endless belt. The blade support assembly includes a spring support and a spring cradle pivotally mounted within and angularly adjustable upon and secured to the spring support. A helical spring is mounted within the spring cradle and has one end anchored thereon. The other end of the helical spring terminates in a spring arm for supporting the blade.

Abstract: A resiliently mounted conveyor belt cleaner is provided to serve as a mechanical cleaner for an endless conveyor belt. The cleaner includes a plurality of independently operable scraper blade assemblies for removing objectionable foreign materials from the surface of the conveyor belt. Each of the blade assemblies is resiliently mounted on a support which is fixedly positionable transversely of and adjacent to the surface of the belt. Each blade assembly includes an elongated arm having a blade mounted at one end and a resilient support-engaging assembly at its opposite end, each support-engaging assembly being individual to its arm. In a first embodiment, a block of resilient material is used to bias each arm and absorb shock.

Abstract: The conveyor belt cleaner serves as a mechanical cleaner for an endless conveyor belt entrained about a pair of pulleys and includes a vertically movable support adapted to be mounted on the frame of the conveyor transversely of the belt, with the support carrying a plurality of independently operable wiper blade assemblies for removing from the conveyor belt abrasive and other objectionable materials. A pair of manually operable jack screws are interposed between the conveyor frame and the support and which are effective upon rotation thereof to vertically move the support and wiper blade assemblies relative to the conveyor belt thus pressurizing the wiper blades of the assemblies against the belt. Each wiper blade assembly is independently mounted on the support by a mounting means including a spring interposed between the support and the corresponding wiper blade assembly for biasing the blade towards the belt.

Abstract: A scraper blade assembly for a conveyor belt cleaner mounted on a conveyor belt system having an endless belt trained about a drum and a rigid support for mounting the belt cleaner. The scraper blade assembly includes a bracket assembly having a pair of parallelly opposed upright plates. A generally L-shaped wiper arm having an arcuate mid-portion is pivotally suspended between the legs. A wiper blade is mounted at one end of the arm and a tension spring is connected between the other end of the arm and the bracket to pivotally urge the arm into scraping contact with the belt. The assembly may also include a stop member at said other end of the arm for limiting the pivotal movement of the arm in one direction to protect the assembly as the blade wears.

Abstract: The conveyor belt cleaner serves as a mechanical cleaner for an endless conveyor belt entrained about a pair of drums and includes a plurality of independently operable scraper or wiper blade assemblies for removing from the conveyor belt various types of abrasives and other objectionable foreign material. Each scraper blade assembly includes an elongated arm or lever which is pivotally mounted on a pivot pin of a bracket assembly. The scraper blade is secured to one end of the arm and is located at one side of the pivot pin. An adjustable stop is interposed between the bracket assembly and the arm at the other side of the pivot pin to limit the pivotal movement of the arm in one direction. A compression spring is interposed between the bracket assembly and the arm at said one side of the pivot pin for urging the arm in said one direction to bias the scraper blade, secured to one end of the arm, towards the belt.

Abstract: An assembly of cleaners for a conveyor belt comprising a tubular support having first and second series of mounting openings which are arranged in a staggered or offset relationship to permit cleaners having spring arms of equal length to be mounted or positioned on the support without any interference between adjacent cleaners. With such a construction, the scraper blades provided at the ends of the scraper arms overlap but do not hit each other as normally occurs when the mounting openings in the support are longitudinally aligned rather than staggered.

Abstract: The conveyor belt cleaner serves as a mechanical cleaner for an endless conveyor belt entrained about a pair of drums and includes a plurality of independently operable scraper or wiper blade assemblies for removing from the conveyor belt various types of abrasives and other objectionable foreign material. Each scraper blade assembly includes an elongated arm or lever which is pivotally mounted on a pivot pin of a bracket assembly. Adjustable stop means is interposed between the bracket assembly and the arm at one side of the pivot pin to limit the pivotal movement of the arm in one direction. An extension spring is interposed between the bracket assembly and the arm at the other side of the pivot pin for urging the arm in said one direction to bias the scraper blade, secured to one end of the arm, towards the belt. As the blade wears, the extension spring pivots the arm and continues to bias the blade towards the belt, with the pivoting of the arm being limited by the adjustable stop means.

Abstract: The switch unit, suitable for use in instances of emergency and also for a normal electrical shut-off and re-setting of a controlled system, features a snap-action electrical switch, as an example, a microswitch type control operated selectively (or jointly) by a pair of like end-anchored tension cables which have their inner ends connected to the unit's operating and re-set signal arm to trip the latter from a normal release position upon a tensioning of either cable by an attendant. The tripping of the arm causes it to operate the snap-action switch, and the arm is automatically locked in the tripped position thereof, having with said switch typically interrupted the electrical operation of the controlled system.