Abstract: A roller assembly for grain shellers, the assembly including a metal sleeve having locking lugs fixed therein, a sleeve of flexible material bonded to the exterior of the metal sleeve, the locking lugs being adapted for connection to a mounting hub, thereby to fix the metal sleeve to the mounting hub.

Abstract: A method for making a roller sleeve assembly comprising providing a metal sleeve, fixing locking lugs to an interior surface of the metal sleeve, the locking lugs extending radially inwardly of the sleeve, and bonding a flexible sleeve to the exterior of the metal sleeve. The invention further contemplates a method for making a roller assembly comprising sliding the above-described sleeve assembly onto a hub comprising a circular wall with ribs extending normally therefrom, and fixing the locking lugs to the circular wall for locking the sleeve assembly onto the hub.

Abstract: A roller assembly for grain shellers, the assembly including a metal sleeve having first and second apertures therein, a sleeve of flexible material bonded to the exterior of the metal sleeve with portions of the flexible material sleeve extending into the metal sleeve first apertures, the metal sleeve being adapted for connection to a mounting hub, and pin means extending from the mounting hub and into the second apertures of the metal sleeve.

Abstract: The present invention includes a ferrous conduit mounted over an aperture in the pipeline, launch tube, or receiver through which the pigs pass. A non-magnetic sensing rod is reciprocally mounted within the conduit with the rod extending through the aperture and into the pipeline. That end of the non-magnetic sensing rod extending into the pipeline has attached thereto a head with a lower rounded surface for engaging the pigs. A non-magnetic end cap is secured to the upper end of the conduit and a non-magnetic magnet holder with a magnet disposed therein are mounted on the upper end of the rod. A magnetically operated switch is mounted adjacent the non-magnetic cap. The conduit shields the magnetic field of the magnet from the switch until a pig is detected. Upon the engagement of the head with a pig, the magnet on the upper end of the sensing rod moves above the conduit inside the non-magnetic cap and sends a magnetic flux to the magnetically operated switch.

Abstract: According to the invention, fluid is adapted to flow through a piston and cylinder disposed in the housing of a meter prover. The cylinder is telescopingly received within the piston. The fluid is permitted to flow into the piston and cylinder through an upstream inlet and leave through exit ports in the cylinder. A poppet valve is provided for closing the exit ports whereupon the piston becomes a fluid barrier and is adapted to move in synchrony with the fluid flow from the upstream fluid inlet. A single detector is provided which is activated at the start of the proving run and at the end of the proving run. A rack is mounted on the piston for turning a gear. The gear rotates a disc having a plurality of markings indicating the incremental displacement of the piston. A photopulser transmits a pulse to a counter for each marking detected upon rotation of the disc. Sufficient piston displacement is permitted to generate a minimum of 10,000 pulses.

Abstract: A detector assembly having a movable trigger adapted to adjustably activate a signaling means is removably mounted on a fixed base attached to a pipeline. A pig passing through the pipeline displaces the detector's trigger through a certain minimum distance to activate the signaling means. A calibrated jig is provided and configured to hold the detector assembly and move its trigger through this same minimum distance. The jig thus simulates the presence of a pig.A method of calibrating a pig detector is also disclosed. A detector assembly is mounted in the jig and the signaling means is adjusted until it just activates. This adjustment is fixed and the calibrated detector replaced on its permanent mount. All similarly calibrated detectors will signal when a pig reaches the same point in the pipeline.