Abstract: An attachment is provided for a tool with a rotary cutting element. The attachment enables an operator of the tool to determine when sufficient stock is removed from the wall of a slot to obtain the proper slot width and includes a gauging element extending longitudinally and generally parallel to the rotary cutting element, said gauging element being of width slightly less than the desired slot width. A cutting edge portion of the rotary cutting element protrudes from the plane of one of the elongated surfaces of the gauging element so that stock may be removed from a slot wall while the gauging element trails behind the cutting edge in the slot. In preferred form, a guide is located 180 degrees from the gauging element so as to precede the rotary cutting element into the slot and control the depth of cut thereof along the slot wall.

Abstract: An optical gauging apparatus is provided for determining the deviation of a pipe end from squareness with respect to the pipe axis. A viewing scope is placed centrally in the pipe end to be measured so as to be directed at right angles thereto, and a graduated target is centrally located in the opposite end of the pipe. Sighting through the scope, the distance R of the intersection of the line of sight from the center of the target is determined. The deviation S from squareness may then be calculated from R, D the diameter of the pipe, and L the distance of the target from the end being measured, by the equation: S=RD/L.

Abstract: A single-spot quench car is disclosed which has an articulating bottom and back wall arrangement. The articulation of the bottom and back walls serve to increase the volume of the car and to facilitate dumping of coke from the car after quenching.

Abstract: Two elongated sealing members are provided to prevent escape of gases from between a movable wall member and an abutting wall member of a metallurgical vessel enclosure. A first elongated sealing member is mounted on the first of the wall members and has a compressible material facing the second of the wall members. A second elongated sealing member is mounted on the second of the wall members and has a blade facing the elongated receiving member. The elongated sealing members are located so that they make contact before the adjoining edges of the wall members are abutted. At least one of said elongated sealing members is movably mounted so that after the elongated sealing members make contact, the wall members may be moved to an abutting position with their adjoining edges touching so as to minimize the effect of heat on said elongated sealing members.

Abstract: An apparatus is disclosed for cleaning the movable parts of a displacement-type liquid level sensor while the sensor is maintained in continuous service. Alternatively, the sensor may be isolated from the process and cleaned without disassembly. In either use a cleaning fluid is introduced to the housing of the sensor containing the movable parts. The flow of the fluid flushes solid particles off of and away from the movable parts of sensor, thus providing reliable operation for measuring the level of chemical liquids such as Phosam solution (diammonium phosphate), that are likely to form solid materials during processing or storage.