Abstract: A method and apparatus for forging large irregular shapes in a closed-die operation, particularly for forging a blank to be machined to form a fluid end piece of a pump. The blank has a substantially rectangular parallelepiped body and a block projecting sideways from the body. The apparatus has a die opening of a shape to form the blank. In a single operation in a conventional open-die press a heated workpiece is upset and a portion squeezed sideways to form the block.

Abstract: A seal for the offtake piping of a coke oven. The piping includes two communicating parts, such as an ascension pipe and a gooseneck, which move relatively to one another. A seal between these parts prevents escape of gases. The seal includes a trough fixed to one of the parts and receiving the other. The trough contains a body of a non-coking non-flammable liquid, preferably silicone, into which the other part extends. Optionally the trough may also contain a gasket of a closed cell sponge elastomer or a layer of granular material.

Abstract: A method and die assembly for forging a rolling mill coupling, the body of which has a socket in one end and tangs extending from the other end. The assembly comprises bottom and top punches which extrude metal downwardly from the bottom portion of a workpiece and upwardly from the top portion to form walls defining the socket at one end of the workpiece and tangs extending from the other end.

Abstract: Apparatus is provided for plunging a fastener through a soft material preparatory to insertion of the fastener in a hard backing. The apparatus may be embodied as an attachment for a conventional fastener feed apparatus or as an improved form of feed apparatus itself. The improvement includes two telescoping members biased to a normal fully extended position. The members are engageable end-to-end with conventional telescoping elements of the feed apparatus and are axially movable with them. The force biasing the members apart is set so as to be substantially less than the force biasing the conventional elements to a fully extended position so that the fastener will be plunged through the soft material first upon application of a force, and then subsequently inserted into the backing upon application of additional force. Apparatus is provided for limiting the collapsed length of the members so as to control the depth of the plunge.

Abstract: This invention relates to an improvement in control apparatus which prevents formation of smoke in a combustion process. The conventional control includes apparatus for first providing the proper flow of either air or fuel to the process to satisfy the required demand for heat. A ratio device is then used to determine the flow of the remaining component necessary for obtaining proper combustion conditions. Where the BTU content of the fuel is likely to vary, a device for analyzing stack gases, typically an oxygen probe is then used to provide a signal to adjust the ratio device based on conditions indicated by the stack gases. The improvement of this invention includes a device for determining when the proportion of the exhaust gas component is outside limitations indicating smoking may occur and an emergency control device actuated when such conditions exist for rapidly adjusting the proportions of fuel and air supplied to the process in order to prevent smoking.

Abstract: A method and mechanism for forming a hole through a forged workpiece. During the forging operation an indentation is formed in the upper surface of the workpiece. While the workpiece remains in the forging press, a trepanning tool is placed in the indentation and the top die of the press is used to force the tool almost through the workpiece leaving a thin wall at the bottom of the hole. The workpiece either may be removed from the press while the wall is knocked out to complete the hole, or preferably the workpiece remains in the press and the top die is used to knock out the wall. If the workpiece remains in the press, preferably it is supported on a locating ring which aligns the workpiece and trepanning tool with the top die. Also disclosed is an improved trepanning tool which has external and internal sloping faces extending around its circumference at its lower end.

Abstract: An apparatus is provided for singly discharging laterally aligned cylindrical workpieces from the lower end of an inclined rollway. A rocker having a pivot intermediate its ends is disposed beneath the rollway and has a stop pin pivotally attached to the end of the rocker which is adjacent the lower end of the rollway and an index pin pivotally attached to the end of the rocker which is adjacent the upper end of the rollway. Sleeves are provided to receive the stop and index pins for guiding alternate advance and retract movements thereof into and out of positions projecting from the rollway in the path of the workpieces as the rocker is oscillated about its pivot.

Abstract: A reheat furnace work supporting member has a full length support bar protruding outwardly from precise locations on each of its opposite sides. The support bars extend the full length of the portion of the member which is to be insulated. A sectioned refractory barrier is suspended on the member by metal hangers which rest on the support bars. A method is also disclosed which includes providing a horizontal member having support bars positioned accurately on its opposite sides by preparation of the member outside a reheat furnace, then installing the member in the furnace where a refractory barrier having downwardly extending metal hangers can be attached quickly and easily at proper locations anywhere along the length of the member without requiring welding inside the furnace.

Abstract: A self-replenishing seal for the gas offtake piping of a coke oven and sealing method. The collector main with which the piping communicates has a trough containing a body of liquid. The end of the piping extends into the liquid to provide a seal which permits relative movement. The trough is located under a nozzle which supplies flushing liquor to the main. Flushing liquor from the nozzle automatically replenishes liquid lost from the trough.

Abstract: A hot top for an ingot mold has a plurality of sections mateable along adjoining edges. The sections include two diametrically opposed lift sections engageable by a crane for transporting the hot top and an intermediate section fitting between corresponding ends of the lift sections. A tongue and groove joint is provided along the adjoining edges of the sections to make them readily detachable and facilitate interchange of sections of different lengths. The joint is tapered in the longitudinal direction from top to bottom of the edges so as to transmit an upward force to the intermediate sections when the lift sections are raised thus preventing separation of the sections when the hot top is transported.

Abstract: A constant velocity joint having first and second rotatable bodies, at least one of the bodies being angularly and axially displaceable with respect to the other. An elongated member for transmitting torque between the bodies extends in its longitudinal direction transversely in a slot in one of the bodies and is connected to the other body. The member is slidable along and pivotable about its transverse axis in the direction of the slot length so as to provide free axial and angular movement of the bodies during their rotative movement. Apparatus is also provided for keeping the member centered in the slot, and includes a ball mounted on the center of each side of the member which rides in a semicircular longitudinal channel along the center of the slot sidewall and is freely slidable and rotatable therein.

Abstract: An apparatus for adjusting the stroke length of a crank rod includes a pair of plates having adjoining broad faces mounted on one of the faces of a flywheel. A crankpin or other means is located on the exposed part of the outer plate for connection of the crank rod. One of the plates has a spline member which is located off center with respect to the flywheel axis. The other plate has a grooved portion mateable with the spline member. The outer plate is detachably connected to the inner one and may be rotated with respect thereto, and then re-connected to provide positive change of the stroke length of the crank rod.

Abstract: A door jamb construction for a coke oven in which the vertical legs of the jamb are essentially rigid in a direction parallel with the oven wall but flexible in a direction normal to the wall. The buckstays of the oven carry spring means which force the flexible legs into contact with the oven wall.

Abstract: Apparatus is provided for support of a self-sealing door on a horizontal coke oven and for guiding installation of the door on the oven. A single pair of hangers are provided for attachment to the oven adjacent opposite vertical sides of the door opening. At least one axially rotatable member is mounted on the door for engaging the hangers and providing movement of the door therealong in a horizontal direction toward the oven. The axially rotatable member is located in a position on the door so that the door will be suspended in a completely vertical attitude on the hangers and may then be rolled into contact with the frame at repeatable, accurate positions to obtain better sealing.

Abstract: A car for carrying large vessels, such as a tundish used in continuous casting, wherein the vessel is raised and lowered while supported on the car. The car embodies a raising-and-lowering mechanism which includes only two synchronized fluid-pressure cylinders, contrasted with the usual four cylinders or screw jacks. The cylinders transmit movement to the vessel through rack and pinion means.

Abstract: A metal tying wire product has an alkali or alkaline-earth, metal-silicate coating weighing at least 110 but not more than about 470 mg/ft.sup.2 of wire surface, the coating being baked at temperatures in the range of 700.degree.-1200.degree. F. until essentially all physically adsorbed water is driven off so as to achieve a knot joint efficiency of at least 70%. A process for producing a tying wire product with such coatings is also disclosed.

Abstract: This invention relates to an improved hood for transfer of coke which prevents binding of the retractable section when it is raised or lowered. The outer surface of the fixed hood section is of circular arc-shape and has at least one track extending therealong. A wheel assembly on the retractable section engages the track so as to guide the retractable section concentrically over the fixed section and prevent binding. Preferably the wheel assembly is outboard of the upper edge of the retractable section. A device is then provided to exert force on the wheel assembly toward the track so as to retain contact between the wheel and track as the retractable section is raised.

Abstract: An improved gas barrier assembly for controlling coating thickness on a strip, has a header which comprises abutting length segments including a pair of conduit segments fixed to a frame in spaced apart position and an intermediate gas orifice segment located therebetween mating in end-to-end relationship with said conduit segments and a readily releasable connecting means for fastening the intermediate gas orifice segment to each of the conduits in gas tight relationship, said connecting means including means for supporting the intermediate gas orifice segment when the connecting means are unfastened so that it may be removed and replaced easily without removing the frame from the coating line.

Abstract: An improved apparatus for measuring the maximum pressure of gas in a system by use of the Brinell principle. In preferred form, the apparatus of the invention is mounted in a plug fitting in the end of a steel cylinder for transporting gases under pressure. The plug has a partial bore extending from the inner end outwardly. A sample is fixed in position adjacent the outer end of the bore. A penetrator is slidably mounted in the bore and has an indentor facing the sample. The penetrator is forced by pressure of the gas against the sample leaving an indentation thereon indicative of the maximum pressure attained in the cylinder over its service life. A vent from the outer end of the plug to the bore prevents buildup of gas pressure between the penetrator and the sample due to leakage of gas along the passage and prevents inaccurate readings.

Abstract: An improved strapping machine has a barrier for stopping travel of the strap at a precise location, a sensor which is activated by contact of the strap with the barrier so as to terminate operation of the strap feed means and a guide means for preventing buckling of the strap within the sealing assembly portion of the machine. In another aspect of the invention the clamping device has a first gripper located in fixed position during feeding and clamping, and a second gripper which is pivotable from a guide position to a clamping position. In a preferred form, one end of the second gripper bar serves as a shear anvil which co-acts with the blade to sever the strap. The shear anvil is adjustable so that the gap between the blade and anvil may be regulated to compensate for wear.