Abstract: An electrolyte anion exchange sensor having a first diffusion membrane is spaced apart from an anion exchange membrane to form a cathodic cell. A second diffusion membrane is spaced apart from the anion exchange to form an anodic cell. CO.sub.2 flows through the first membrane and is ionized. The bicarbonate ions flow through the anion exchange membrane into the anodic compartment and reacts to form CO.sub.2. The current change in the electrolyte path corresponds to the amount of CO.sub.2.

Abstract: A slide plate screen changer has a housing defining a material flow passage and a transverse slide plate passage in which is mounted a movable screen plate. Seal rings on the upstream and downstream sides respectively of the screen plate prevent leakage of material from the flow passage. One of the seals is adjusted by means of a threaded bushing which surrounds the flow passage and which protrudes axially from one end of the housing where it is fully accessible to torque exerting tools.

Abstract: An apparatus for manipulating a workpiece or the like comprising a pair of inger assemblies mounted on a common support. The finger assemblies have belts with contact surfaces arranged in a confronting relationship. A first operating mechanism is provided for moving the finger assemblies along a first axis towards each other to grip a workpiece between the belt contact surfaces. A second operating mechanism is provided for rotating the belts about the first axis in order to impart a corresponding rotation to the workpiece gripped therebetween. A third operating mechanism is provided for moving the belts in either the same or opposite directions in order to impart either translational movement to the workpiece along a second axis perpendicular to the first axis or rotational movement to the workpiece about the second axis.

Abstract: A hacksaw with an improved mechanism for adjusting the tension on the blade. The mechanism includes a lever for vertically moving a rod to pivot a rocker arm to place tension on the rocker arm-held blade. The rod has a manually rotatable cross-member provided at its lower end. The rocker arm has a transversely extending seating groove provided on the lower surface of its rear portion to receive the cross-member and to retain it therein against rotational movement. The cross-member is rotatable by the user to provide a positive and replicable blade-tensioning means which is free from infinite adjustment-caused creep.

Abstract: A control system for a fume hood, wherein limit switches sense the position of the sash, and pressure and light sensors monitor pressure changes in the fume hood and ambient light. A low volume fan continously draws air through the fume hood. When the sash is opened the high volume fan is actuated. Air flow is monitored as the sash position is changed; and an alarm system is actuated when an unsafe condition exists.

Abstract: An apparatus to allow a prospective customer of articles of clothing to try on one or more articles of clothing without actually putting the articles of clothing on his or her person. This is accomplished by means of an electronically produced full figure image which is composed of the customer's head and a model's body, the model's body attired in articles of clothing to be presented. The composite image is viewed by the customer on a television screen and this gives the effect of the customer being attired in the articles of clothing presented.

Abstract: A clutch position selector valve for use with a transmission for an industrial vehicle. The selector valve selectively establishes communication between a fluid pressure source and a forward clutch chamber or a reverse clutch chamber. The selector valve comprises a valve body having an inlet port communicating with the pressure fluid source, a forward clutch port communicating with the forward clutch chamber, a reverse clutch port communicating with the reverse clutch port and a drain port communicating with a fluid reservoir, and a valve element selectively establishing communication between the inlet port and the forward or reverse clutch ports. The valve element is removably and reversibly disposed within the interior of the valve body and cooperates with a selector lever to shift the element between the forward and reverse positions. This reversible feature permits the operating lever to be located on either side of a steering column for convenience of operation.

Abstract: A fixing bridge for attachment to the goaf side of a channel section on a scraper-chain conveyor, is provided with connectors for the attachment of anchoring devices. A first connector is provided adjacent to one end of the fixing bridge, and a second connector is provided adjacent to the other end of the fixing bridge. The second connector is vertically off-set with respect to the first connector.

Abstract: A mine roof support unit has a roof bar supported on a floor sill by hydraulic props. The floor sill is constituted by a face-side floor sill part and a goaf-side floor sill part. The two floor sill parts are telescopically interconnected. Each of the floor sill parts supports a pair of hydraulic props. Hydraulic rams are provided for moving each of floor sill parts relative to the other floor sill part in the direction of roof support unit advance.

Abstract: An oxygen analyzer which measures the level of dissolved oxygen in a liquid stream. The measuring process embodies chronoamperoemetry of pulsed potential voltammetry. The signal from the electrode is real time averaged. The analyzer does not require temperature, salinity or pressure compensation circuitry and does not have to be calibrated repeatedly.

Abstract: An apparatus for detachably connecting a tool component to a frame component which is in turn adapted to be adjustably mounted on a vehicle. One of the components is provided with notched members for receiving engagement members on the other component. Contact members on one component are arranged to compressively engage resiliently compressible pads on the other component during entry of the engagement members into the notched members.

Abstract: A pattern utilized to prepare a diffraction grating, or an element of a semiconductor device, for example a silicon island, or a device isolation pattern or a semiconductor element, such as a MOS FET, is formed by the steps of forming an oxidizable region of a predetermined pattern on a substrate and oxidizing the oxidizable region for forming an oxide region pattern in at least a portion of the sidewalls of the oxidizable region. The resulting pattern, which is extremely fine and formed at a low cost, has a sufficiently large height with respect to its width. Furthermore the pattern can be formed at a relatively low temperature.

Abstract: Apparatus for controlling the position of a mineral winning machine, such as a plough, movable along a guide at the mineral face side of a scraper-chain conveyor employs a connector bracket at the goaf side of the conveyor to which a floor-engaging skid plate is pivotably linked. A beam extends from a roof support and is also pivotably connected to the skid plate remote from the conveyor. A pair of piston and cylinder units are pivotably connected at their upper ends to the bracket. One of the units is pivotably connected to the skid plate and the other is pivotably connected to the beam. By operating the units together the skid plate can be held against the floor over part or all of its lower face while the conveyor goaf side is raised or lowered accordingly.

Abstract: A conveyor chain for a dishwashing system which chain includes a plurality of pinned links and travels on a conveyor pan and supports at least in part racks to be carried. The links are pinned for movement about a vertical axis (in a horizontal plane). Paired wheels are pinned to the links and lie in planes that form acute angles with the pan. This minimizes lateral sliding friction between the wheels of the links and the pan and therefore, wear, when the chain travels through a non-linear portion of the pan.

Abstract: In a signature delivery device in which signatures of paper sheets folded by a folding machine of a rotary printing press are conveyed by an endless conveyor belt to a horizontal type stacker in a partially overlapped state and at the stacker the signatures are inverted and then sequentially inserted beneath a stack of previously stacked signatures, there are provided a first roller in contact with a lower surface of the endless conveyor belt and rotated at a peripheral speed substantially the same as a running speed of the endless belt, a second roller mounted on a shaft in parallel with the first roller for clamping the conveyor belt and the signatures conveyed thereby between the first and second rollers, and drive gears for rotating the second roller at a peripheral speed lower than that of the first roller so as to slightly lay an upper sheet of each double fold signature with respect to the lower sheet.

Abstract: A suction dewatering system for a papermaking machine has a suction device with an opening extending longitudinally in a direction transverse to the path of material travel through the machine. Elongated wear strips are supported on opposite sides of the opening to define a suction slot therebetween. A guide channel extends longitudinally through at least one of the wear strips in a direction parallel to the suction slot. An adjusting plate is shiftable longitudinally within the guide channel. Oblique cam slots in the adjusting plate coact with fixed guide members to laterally adjust the position of the one wear strip relative to the other wear strip to thereby vary the width of the suction slot.

Abstract: In a phase adjusting apparatus for use in a sheet-fed rotary printing press having a turn-over mechanism, there are provided a fixed gear meshing with a gear of a printing cylinder on the downstream side and secured to an end shaft of a turn-over cylinder in contact with two adjacent printing cylinders, an adjusting gear meshing with a gear of a printing cylinder on the upstream side and loosely mounted on the shaft, and radial two-armed levers pivotally mounted on a fixed gear and engaging an adjusting bolt coaxial with a turn-over cylinder, and pins inserted into openings of the fixed gear to engage the two-armed levers. With this construction it is possible to readily adjust the phase relationship between groups of cylinders on the upstream side and downstream side of the turn-over cylinder.

Abstract: A hydraulic ram for use in thrust-jacking of tunnel linings comprises a cylindrical outer member, a cylindrical inner member reciprocable within the outer member, and an extension member reciprocable within the inner member. A two-part clamping ring is provided for releasably locking the extension member to the inner member. An auxiliary drive is provided for retracting the extension member rapidly within the inner member. The auxiliary drive may be a mechanical spindle drive, or a hydraulic drive having an auxiliary piston reciprocable within an axial bore formed in the extension member. The clamping ring comprises spring means for urging the parts of the clamping ring in to the closed position, and piston-and-cylinder means for urging the parts of the clamping ring apart, against the biasing force of the spring means, to open the clamping ring.

Abstract: An outer body has an axially extending through hole with a frusto-conical section thereof. An inner body is coaxially disposed in the outer body hole. The inner body has a frusto-conical end portion which is spacedly received in and spaced from the frusto-conical hole section of the outer body to define therebetween a frusto-conical space which acts as an air jet opening. The inner body has therein an axially extending through hole. A weft guiding body having therein an axially extending through hole for receiving therein a weft yarn is coaxially disposed in the inner body hole. The weft guiding body has an extension which projects from the apex of the frusto-conical end portion of the inner body and terminates at a position between the apex and the exit of outer body hole. The inner body is axially movable relative to the outer body, and the weft guiding body is axially movable relative to the inner body.

Abstract: A coolant seal for use in a rolling mill wherein the neck of a roll is rotatably supported in an oil film bearing contained within a bearing chock, with a seal assembly located between the roll end face and the bearing chock to retain oil in the bearing and to exclude contaminants such as cooling water, mill scale, etc. from the bearing. The seal assembly includes a circular seal end plate fixed relative to the bearing chock at a location surrounding a circular flanged seal mounted on the roll neck for rotation therewith. The coolant seal is circular, with a radially disposed mounting flange integrally joined at its inner edge to a sealing flange extending angularly and flexibly therefrom. The mounting flange is secured to a mounting surface on the seal end plate at a location placing the sealing flange in frictional contact with the roll end face.