Abstract: In apparatus for forming and taking away packets of bags deposited on a collecting table by a rotary depositing cylinder of a bag-making machine, the table extends substantially radially to the depositing cylinder, the packets of bags are successively withdrawn by gripper units which pass through the collecting table and take them away in a direction opposite to the direction of rotation of the depositing cylinder. Long and short holding fingers engage through recesses in the collecting table from beneath the latter and project beyond same, are movable longitudinally of the collecting table, can be flexed towards the depositing cylinder and have ends projecting away from the depositing cylinder periphery. The short holding fingers are mounted for reciprocating sliding motion substantially tangentially to the depositing cylinder between their retaining position and a lowered position below the plane of the collecting table.

Abstract: An apparatus for removing polluting matter arising in flame cutting and like operations. In this apparatus a suction hood is associated with each cutter unit of a cutting assembly and connected to a suction device, an upwardly facing suction box disposed beneath the cutting table extends transversely of the width of the cutting table and is movable along it. The suction box is connected to the suction device and displaceable together with the cutting assembly with the aid of a device operable by sensing means sensing the position of the cutting assembly so that the suction box will be located beneath the working area of the cutting assembly. The movable suction box is provided with means for reducing the speed of jets directed from the flame cutters toward the interior of the suction box and laden with gases, fumes, dust, minute particles and like polluting matter.

Abstract: The invention is concerned with a horizontally closing die quenching apparatus and with a method for die quenching. The apparatus comprises a pair of relatively movable opposed substantially vertical platens each supporting a plurality of die blocks, the die blocks each having an internal cavity and generally opposed outer surfaces for receiving and substantially surrounding a plurality of first selected portions of a work piece when the platens are moved together. The die blocks also include a plurality of relatively small fluid passageways extending through the opposed surfaces thereof the passageways providing fluid communication with the cavities within the die blocks. A plurality of opposed fixtures are provided movable together relative to the platens for holding the work piece at its ends between the die blocks and means are provided for controllably pressuring the fixtures towards one another.

Abstract: An ignition rod for an oxygen flame cutting and welding apparatus comprising a plurality of individual rod elements and a device for feeding the ignition rod from storage to a point of use.

Abstract: An apparatus for the separation and collection of plasma or serum from the cellular phase of a blood sample in a blood collection tube having a piston assembly provided with a cup shaped housing with a closed rear portion having a one-way valve extending therethrough with a filter disposed in the housing and formed with an open forward portion surrounded by a flexible peripheral flange of greater diameter than the internal diameter of the collection tube.

Abstract: System for recovering at least one of gold and silver from mine run dumps or crushed ores containing at least one of gold and silver, comprising an inclined surface for supporting a heap of the mine run dumps or crushed ores, means for distributing an alkali and cyanide containing aqueous solution onto the heap, a storage zone for the resulting pregnant solution arranged to collect the run-off of the solution from the inclined surface, a plurality of activated carbon loaded ion exchange vessels mounted on mobile support means, conduit means for feeding the pregnant solution serially through the vessels thereby to strip the gold and silver values from the solution and conduit means for recycling resulting barren solution for distribution onto the heap.

Abstract: An existing basic oxygen type top-blown steel converter vessel is transformed into a bottom-blown type where gases and finely divided materials may be blown into the vessel through tuyeres in its side wall and in its bottom. The existing trunnion shafts on which the existing vessel is supported for tilting are bored at the installation site to provide a plurality of passageways for conducting finely divided materials, gases and cooling water to the various tuyeres and to the trunnion ring which supports the vessel, respectively. Special multipurpose rotary joints are used to connect the tiltable vessel to sources of the gases and finely divided materials.

Abstract: A mechanism for automatically forming and laminating flaps of individual carton blanks as the blanks are moved along a prescribed longitudinal path. The mechanism includes a hopper for supplying individual carton blanks to a conveyor that leads along the prescribed path away from the hopper. A vacuum head is movably located below the hopper to remove successive blanks therefrom. The suction head moves the individual blanks downwardly into engagement with the conveyor. Lugs on the conveyor move the successive carton blanks along the path toward a flap folding mechanism. The flaps are folded over onto the carton blank in two separate steps. Firstly, the flaps are folded upwardly to a substantially 90 degree orientation with the remainder of the blank. This is done by a pair of pivoted arms on opposite sides of the conveyor. As the carton blank continues to move along the conveyor, the upwardly folded flaps are engaged and folded on downwardly into engagement with the remainder of the blank.

Abstract: A cutting torch arrangement is disclosed, including a thermal bar having a metal burner pipe with rod-like metal elements therein and gas passageways formed between these elements. A shroud/ shield is disposed around the thermal bar, with an open shroud/shield end laterally spaced from the thermal bar. A spring-biased feeder assembly and shroud/shield biasing assembly is provided for yieldably urging the thermal bar forward within the shroud/shield and for retaining the shroud/shield against a target. A cluster arrangment of thermal bars is also provided.

Abstract: A novel apparatus for automatically heat treating ferrous work rapidly from austenite stage temperature through the martensite state and automatically slowly cooling the same thereafter to impart uniform hardness and other desired characteristics thereto, eliminating risk of warpage, cracking, distortion and variations therein. The invention includes a work holder within which the work is positioned during the automatic heat treating procedures, the work holder being provided with an upstanding vertical perforated wall such that, on positioning the work holder and work, after being preheated in a furnace, into the quenching medium, the work will be automatically quenched and cooled through the rapidly cooling initial and subsequent slow cooling time and temperature stages, achieving uniform transformation and hardness of work having varying forms and thicknesses to the martensitic transformation stage.

Abstract: Apparatus for conveying an elongated hot-rolled steel rod in off-set form on a conveyor through a series of cooling chambers. Each chamber comprises a stationary lower section and a removable cover section, the interior walls of each being heat reflective. Each chamber is also provided with tubes supported adjacent the interior walls and controlled in temperature by gas passing through said tubes, said gas being cold or hot, the hot gas being supplied from a plurality of separately controlled burners. The tubes differentially control the rate of heat radiation from the rod rings to compensate for the different rates of radiational heat loss emanating from the top and sides of the rod rings so as to cause the rod to cool uniformly. The side walls of the chamber are provided with adjustable apertures for the escape of radiant energy from the sides of the rod rings.

Abstract: A folding machine for folding the front and rear panels of a box blank prior to folding the lateral panels thereof including a pair of pull rolls for advancing successive ones of such blanks, pivotable rising fingers just beyond the pull rolls for initiating upward folding of the front panel along a transverse score line in the blank, a folding beam for intercepting the partially folded front panel of the blank and bending it backward against the body portion of the blank as it continues to advance, a second pair of pull rolls downstream from the folding beam for advancing the partially folded blank and pressing the front panel against the body of the blank, a pivotable stop downstream from the second pair of pull rolls for momentarily stopping advancement of the blank, a second folding beam just downstream from the second pair of pull rolls for supporting the rear panel of the blank to be folded, and a rotatable roller lever adjacent the second folding beam for pushing the body of the blank downwardly agains

Abstract: A guide for a cutting torch providing means for effecting circular cutouts in large vessels or large diameter pipe without the need of a lay-out other than fixing a working point and providing multiple adjustments so that cuts may be made of the desired diameter as well as having the desired bevel.

Abstract: The invention relates to an automatic cutting torch assembly for making cuts of any predetermined shape in a metallic pipe. Rollers are provided for the pipe to be processed which permit back and forth movement of the pipe. A photoelectric tracer unit and a cutting torch are mounted on a longitudinally extending bar which is also movable back and forth. The tracer unit and cutting torch are aligned with the axis of the pipe and are adjustable so as to be brought in close proximity to the pipe regardless of the size of the pipe. A pattern line is placed on the pipe and the tracking of the line by the tracer unit results in providing the correct cutting locus for the torch. A resolver unit senses the instantaneous angular position of the tracer unit and translates the sensed signal into two signals which correspond to the circumferential and angular components of the sensed angular position.

Abstract: A cutting torch apparatus comprising a cutting torch arranged to be mounted on a movable frame for movement over the workpiece with the torch comprising a torch body and support therefore integrated into a double acting hydraulic cylinder and piston device in which the torch body is equipped as a piston and is reciprocably mounted in a cylinder through which the torch body extends to dispose the torch nozzle for application to the workpiece. The torch body is equipped with a feeler or guide member mounted for a lost motion movement range axially of the nozzle and having a plurality of feeler elements in coplanar relation that ride on the workpiece in spaced apart relation about the nozzle. The piston and cylinder device are incorporated in a hydraulic system, that includes a hydraulic pressure liquid and a hydraulic pressure liquid flow orienting or directional control valve of the mechanical servo type, for supporting the torch body and moving same axially of its nozzle.

Abstract: An improved apparatus for supplying the refining gas and protective media utilized in the refining process described in U.S. Pat. No. 3,706,549 issued Dec. 19, 1972, including valves provided in the supply lines for preventing malfunctioning of the process.

Abstract: In a blast furnace installation comprising a blast furnace and a raw material charging apparatus including a hollow inverted frustum shaped rotary hopper mounted above the blast furnace, conveyor means for supplying the raw material to the rotary hopper, a hollow disc shaped impeller located beneath the rotary hopper for receiving the raw material therefrom, stationary inclined chute means including an annular chamber member surrounding the periphery of the impeller for receiving the raw material discharged from the impeller, and an electric motor for driving the impeller, the gas pressure in the furnace top is accurately controlled by detecting the gas pressure in the annular chamber member at a plurality of circumferentially spaced points, comparing the mean value of the detected gas pressure with a preset furnace top gas pressure for producing a control signal proportional to the difference therebetween, and controlling the speed of the motor by the control signal thereby reducing substantially to zero the

Abstract: A cutting torch arrangement is disclosed, including a thermal bar having a metal burner pipe with rod-like metal elements therein and gas passageways formed between these elements. A shroud/shield is disposed around the thermal bar, with an open shroud/shield end laterally spaced from the thermal bar. A spring-biased feeder assembly and shroud/shield biasing assembly is provided for yieldably urging the thermal bar forward within the shroud/shield and for retaining the shroud/shield against a target. A cluster arrangement of thermal bars is also provided.

Abstract: The mouth of a metal refining vessel has a primary gas collection hood supported over it. A duct couples the hood to a gas cleaning quencher which is serially connected by a duct to a wet scrubber. A fan draws gases and suspended particulates through the system and discharges the effluent from the scrubber to a stack which burns the gas in the atmosphere. A secondary gas collection hood is supported over the first hood. The secondary hood has a duct which connects into the gas cleaning system intermediate the quencher and the scrubber. A bell damper connects the duct from the secondary hood into the intermediate duct. When the vessel is tilted away from the primary hood, the damper is opened so that gases escaping from the mouth of the vessel may be captured by the secondary hood and passed through the gas cleaning system. The secondary hood has a chain curtain which yields to allow a ladle or scrap charging box to swing over the vessel mouth when it is tilted.

Abstract: Method and apparatus for producing light metal alloys, in particular aluminum alloys, in which the desired alloying elements are first introduced into a vacuum furnace which is then evacuated, whereafter light metal melt is introduced into the furnace chamber by suction in the form of a free-falling metal jet which is thereby subjected to a vacuum treatment for reducing the contents of impurities, such as hydrogen, sodium, oxides and other non-metallic particles, therein. The free-falling metal jet is given such a configuration with respect to composition and flow pattern, such an average length as well as such velocity and direction that the alloying elements are readily dissolved and mixed into the melt in the vacuum furnace, whereby an alloy of desired quality is ready for casting immediately after termination of the vacuum treatment and alloying process.