Abstract: A round rod is supported at its ends by the parallel runs of two sprocket chains used in a conveyer. In order to permit easy replacement of a rod when damaged, the rod is equipped with spring biased means for holding the rod captive on the conveyer chain runs during normal use and for permitting the rod to be quickly snapped out without necessity of disassembling the conveyer chains or their protective shield.

Abstract: An openable vehicle roof structure to serve as a retractable sliding roof or an air vent has a roof opening in the horizontal portion; a downwardly recessed frame surrounding the opening on at least its front and side edges, as an integral part of the roof structure; a rigid panel matching the opening and serving as a closure member for it when aligned with the edges thereof; a pivot connection between the panel and the roof frame which permits the panel to be pivoted about a horizontal axis located near its front edge, the rear edge of the panel being thereby movable upwardly out of the roof opening; two rigid, generally flat shutter members arranged adjacent to the lateral edges of the panel to extend along at least a major portion of the panel length; a connecting mechanism for movably connecting the shutter members to the panel so that, when the rigid panel is in its open, upwardly pivoted position, they extend downwardly from its lateral edges, thereby substantially covering the gap between the panel and

Abstract: A mining machine having a body portion mounted on propelling tracks includes an endless conveyor mechanism positioned on a conveyor support frame that extends longitudinally on the body portion. The conveyor support frame includes a main conveyor section connected by a link member to a conveyor boom section arranged for lateral swinging movement relative to the main conveyor section. The main conveyor section and the conveyor boom section each include an integral gear member. The gear members of the respective sections are maintained in meshing relation by pivot pins interconnecting the link member with the respective sections. A hydraulic cylinder having an extensible piston rod preferably connects the conveyor boom section to the link member. Actuation of the hydraulic cylinder extends or retracts the piston rod to laterally swing the pivot connection of the conveyor boom section in a preselected direction relative to the pivot pin connection on the main conveyor section.

Abstract: A roller unit for removing copy paper from an electrophotographic copying machine, the unit comprising a drive roller and an idler roller, each having a plurality of longitudinally extending portions where the diameter of every other portion is larger than its adjacent portions, the rollers being disposed adjacent one another so that the larger portions of the drive roller are adjacent the smaller portions of the idler roller, and a plurality of rings disposed about the rollers to establish a substantially uniform clearance not greater than 1.5 mm. therebetween so that if any of the copy paper is ignited within the copying machine, the fire will be extinguished because of the clearance between the rollers, the copy paper being delivered from the copying machine with a predetermined rigidity along its direction of movement because of the disposition of the rollers with respect to one another to thereby lessen the tendency for the copy paper to turn over as it is delivered from the copying machine.

Abstract: A catch apparatus for a loading carriage on an inclined drift elevator mounted on a stand which forms an inclined track and extends from one level to another level. The loading carriage is connected to a pulling means which moves the carriage on the track. The catch apparatus comprises a speed sensing unit coupled to a pair of carriage wheels and a locking unit provided with catch members, the locking unit being actuated by the speed sensing unit when the wheels exceed a predetermined rotary speed to pivot a catch member toward the track where it engages a reinforcing element on the track rail to arrest the carriage.

Abstract: An apparatus for the pneumatic conveyance of pulverulent or granular material, has a reservoir for the material, a fluidization barrier in the reservoir, an outlet for material flowing from above the barrier in the reservoir, an inlet conduit for fluidization gas opening below the barrier, a conveyor conduit connected to the outlet, an inlet conduit for pressurized conveying gas opening into the conveyor conduit, a first valve in the inlet conduit for fluidization gas, a second valve in the inlet conduit for conveying gas and control means for the said first and second valves arranged to control both the valves in dependence upon pressure in the conveyor conduit and to maintain said second valve partly open when said first valve is open but to open said second valve beyond a predetermined opening degree when said first valve is completely closed.

Abstract: Control means for a bar holder and feeder coupled to an automatic machine tool to hold bars for and feed bars to the machine tool and having feed means to feed a bar from the bar holder through a collet of the machine tool, the control means comprising counting means settable to a determined number; trip means operable when in a set position to trip the counting means once for each work piece machined; trigger means effective to move said trip means to the set position when a new length of bar is fed into the bar holder; and coupling means coupling the counting means to means controlling machining operation of the machine tool; said determined number being settable so that, after a number of workpieces equal to said determined number have been machined from a length of bar preceding said new length of bar, such that the remnant of said length of bar is not of sufficient length safely to permit machining of a further workpiece therefrom, the counting means cause the coupling means to stop the machine tool and

Abstract: Needle-valves to be inserted in a hot runner panel of an injection moulding machine for the distribution of the molten material to a plurality of dies fastened to the front of a hot runner panel and which are opened by the pressure of the molten material and closed by a spring by the releasing of the pressure. The construction of the valves being so that they as a unity may be easily inserted, removed and adjusted from the backside of the hot runner panel without disassembling the dies from the moulding machine. Further the valve is provided with an adjustable abutment in an enclosed space which will not be contaminated by the molten material to ensure exact position of the needle in its open and closed position.

Abstract: In an apparatus for transporting cylindrical steel articles by rolling down on inclined skid rails, a plurality of electromagnets are provided along extension of the skid rails so as to reduce the speed of rolling down of the articles repeatedly during transportation on the skid rails by applying forward and reverse excitations to each of the electromagnets at a predetermined timing thereby to transport the articles in a pitch transfer mode.

Abstract: A high volume pneumatic tank for vertical installation in a ship, or the like, having a pump, or air compressor, for selectively providing a supply of air for unloading pulverulent material aerating and pressurizing the contents of the tank including the discharge line from the tank to the point of discharge, and equalizing means for maintaining a balanced pressure in the tank, and the novel method of handling pulverulent material.

Abstract: A jet propulsion exhaust nozzle particularly useful in multi-engine installations which provides high internal/external, thrust-minus-drag, performance for transonic cruise or transonic acceleration as well as improved performance at subsonic and supersonic speeds. A two dimensional wedge/translating shroud is provided at the nozzle exit for providing the variable nozzle exit geometry needed to achieve high engine performance over a wide range of throttle power settings.

Abstract: Conveyor apparatus comprises a series of spaced rollers defining thereover a travel path for articles and an article stop located adjacent and downstream with respect to one of the rollers and movable between an extended position and a retracted position. In its extended position, the article stop extends into the travel path to obstruct passage of articles from the roller, and in its retracted position the article stop is spaced from the travel path to permit passage of articles from the roller. A roller stop is secured to the article stop and movable therewith, the roller stop being operatively disengaged from the roller when the article stop is in the retracted position and operatively engaged with the roller when the article stop is in the extended position. Operative engagement of the roller stop with the roller inhibits rotation of the roller and thus reduces the momentum with which an article engages the article stop.

Abstract: An endless conveyor having two adjacent, aligned, parallel chain loops each having two rectilinear portions. Between the loops and entrained by friction are suspended carrier members for carrying objects along the two rectilinear conveying tracks defined by the chains. A latching device comprising a spring-loaded, U-shaped member which wedges between spaced chain links thereby preventing sliding of the carrier members at the loop ends is provided to allow passage from one track to the other.

Abstract: A heat actuated valve comprises a base adapted to be mounted on a fire extinguisher container. The base includes a passsage communicable with the container interior. A pair of stop fingers extend forwardly from the base. A fusible element interconnects the stop fingers. The base, stop fingers and fusible element are of one-piece, integral construction. A plunger is slidably mounted in the passage and includes a passage-blocking portion which blocks the passage when the plunger abuts the stop fingers during a fire sensing mode of operation. The plunger is slidable rearwardly to shift the passage-blocking portion to a first passage-opening position to allow the container to be filled. The plunger is operable, in response to melting of the fuse, to spread the stop fingers apart and travel forwardly sufficiently to shift the passage-blocking portion to a second passage-opening position, enabling the container contents to be discharged.

Abstract: This vibration generator intended more particularly for impressing a vibratory motion to vibrating apparatus such as handling circuits and treatment stations for loose materials and products comprises an excitation eccentric rotatably driven from a motor and adapted, during at least one fraction of its stroke, to co-act with a roller lined with resilient material mounted in a fixed position on the apparatus, the axis of rotation of this eccentric being coupled to means controlling its movement substantially in the direction towards the apparatus. Thus, the amplitude and frequency of the vibratory motion can be modified while in operation, either manually or automatically.

Abstract: A comb plate device for a passenger conveyor comprising a longitudinally extending mounting plate for mounting transversely of a conveyor, a comb plate pivotally mounted on the mounting plate about an axis parallel to the said mounting plate and fluid-sensing means to detect pivotal movement of the comb plate when in use on a conveyor.

Abstract: A Bernouilli wafer transport system in which semiconductor wafers or similar disc-shaped work-pieces may be transported along rail sections one side of which forms a wafer suspension surface incorporating along its longitudinal symmetry thus the orifices of a number of inclined nozzles connected with a common air or gas duct in the interior of the rail section, said nozzles having an orientation in the desired direction of transportation. A rail section may be constructed in one end to be introduced to a prescribed depth into a wafer supply or receiving magazine and two such rail sections may be combined into a single continuous rail having means for stopping wafer transport in an intermediate position between two magazines. The inclination angle of nozzles relative to a plan to the suspension surfaces may be different for different nozzles along a rail section in order to provide safe control of the unloading and loading of wafers from and into magazines as well as the transportation thereof.

Abstract: The apparatus disclosed includes two posts to be installed erectly on opposite sides of a common car lift; a cantilever assembly slideable up and down on each post, means for interengaging the lift with each cantilever assembly to raise it when a car is being lifted and to drop it when the lift is being lowered, means for pinning the cantilever assemblies at selective levels on said posts, and arms on said cantilever assemblies retractably extendible to intercept a car being lowered by said lift and to retain it at an elevated position while the lift itself continues to lower to an out-of-the-way position leaving the entire underside of the car accessible for service.

Abstract: A spraying apparatus utilizes pressurized gas to spray liquid contained in a large replaceable or refillable cartridge. The cartridge is positioned within a casing which provides a pressure chamber, and a source of pressurized gas is attached to the casing to pressurize the chamber. The top of the cartridge communicates with the chamber so that the liquid is also pressurized. A tube extends from above the level of the liquid in the cartridge to the bottom of the cartridge and is attached to a valve. An opening is provided in the tube adjacent to the bottom of the cartridge, and the diameter of the tube is reduced above the opening to restrict the flow of gas through the tube and to create a pressure differential in the tube. When the valve is open, pressurized gas flows through the tube, and, since the pressure of the gas inside the tube at the opening is less than the pressure of the liquid, liquid flows through the opening, mixes with the gas within the tube, and flows through the valve.

Abstract: Milk powder, or similar powder which is liable to smear when under mechanical stress, is conveyed in sucessive plugs or batches in a suction flow which is interrupted at intervals according to the batch size. In apparatus for this purpose, an interval-controlled valve is provided in a suction conveying conduit which is connected via an inlet chamber to the outlet of a container for the powder. The container may have at its outlet a loosening floor operable with pulses of compressed air controlled synchronously with said interval-controlled valve.