Abstract: A method and apparatus for the ultrasonic detection of pipe cavity in hot slabs, blooms, and billets to determine the optimum cropping length. An ultrasonic transducer surrounded by a water-jacket for circulating a cooling medium is embedded in a blade of the crop shear of a primary mill. The pressure of the shear blade against the workpiece is utilized to create the proper acoustic couple between the workpiece and the transducer.

Abstract: This invention concerns plastic lids and pails having improved resistance to leakage upon impact. Upstanding elements dissipate impact forces from the assembled pail and lid.

Abstract: A lightweight, easily-installed boot for wire rope terminations is water-tight and adaptable to a variety of wire rope terminations. The boot is placed on the surface of a wire rope and secured to the socket nose of the termination to seal the termination-wire rope interface; then, a polyolefin heat shrinkable tube is placed over the head of the boot to seal the wire rope-boot interface.

Abstract: An arrangement adapting a slatted top to a single-spot quench car. The slats are opened and closed in selected groups.

Abstract: An improved tripper beam arrangement for actuating the slats of a slatted top quench car.

Abstract: An electronic camber measuring device for hot rails utilizes the radiant energy of the rails for measuring the amount of camber imparted to the rail in a rail mill by measuring deflection in the end of the rail with respect to the centerline of the mill. Phototransistors are coupled to a readout console through digital circuitry. The readout console has a visual and audible alarm capability for indicating out-of-tolerance camber and a recorder for recording the camber and temperature of the rails.

Abstract: A core for the injection molding of plastic articles having internal threads, provides a means for readily releasing the article from the mold. The core has a non-rotating, water-cooled center section to hold the molded article against rotary motion and a driven, water-cooled ring section for molding threads in the article. Rotation of the ring section coupled with the holding action of the stationary center section releases the molded thread and ejects the article from the core by the axial force of the thread of the core bearing against the molded thread of the article.

Abstract: Apparatus is disclosed for cutting open a blow-molded container such as a refuse can. A pair of knife blades are pivotally mounted to a knife which is pivotal about an axis orthogonal to the axis of pivot of the blades. The knife has a pair of cam followers for guiding it around the container by following a cam track conforming to the shape of the article.

Abstract: A roll stand for use in the roll racks of a continuous casting machine is disclosed in which the distance between the rolls is capable of infinite adjustment and is remote-controlled. Through the use of screw jacks supporting the top rolls, infinite adjustment is attained within the upper and lower limits of the jacks. The system is remote-controlled through the use of hydraulic motors for operating the jacks. Positive locking of the rolls in position is achieved through the use of wedge-shaped tapered keys.