Abstract: A continuous web of sheet material is fed through the nip of a first pair of driven pull rolls around a series of idler rollers and through the nip of a second pair of driven pull rolls. The pairs of pull rolls are selectively rotated to exert a desired tension on the web in a tension zone formed between the pairs of rolls. One pair of pull rolls operates as feed rolls to advance a preselected length of the web to a rotating cutter mechanism so that envelope blanks of a selected length are cut from the web for each revolution of the cutter mechanism. The feed rolls are operated by a servo-controlled motor responsive to an operator initiated signal to adjust the feed length without interrupting the feed of the web to the cutter mechanism. The second pair of pull rolls operates as tension rolls and is servo-motor controlled to maintain a preselected tension on the web fed to the cutter mechanism.

Abstract: Refractory material is applied to the interior surface of a vessel by advancing a boom carriage on a frame positioned externally of the vessel through an opening in the vessel. The boom carriage supports a collapsed telescoping mast and a nozzle boom. The carriage supporting the mast and nozzle boom is advanced through the opening to an elevated position within the vessel. At the end of travel of the boom carriage, the telescoping mast is pivoted through approximately 90.degree. to a vertical position and the nozzle boom is pivoted to a position perpendicular to the mast. The mast is progressively extended as the nozzle boom is rotated and refractory material is sprayed from a nozzle assembly on the end of the boom onto the vessel interior surface. The nozzle boom is transversely and pivotally movable on the mast to adjust the position of the nozzle assembly to follow the irregular contour on the interior surface as the mast is telescopically advanced or retracted.

Abstract: A web of cardstock divided by transverse score lines includes card segments having apertures oriented with respect to an optical center point of each card segment. The web is continuously fed from a supply of cardstock by engagement of a tractor feed device with tracks of holes extending along the longitudinal edges of the web. A selected one of the holes serves to locate the optical center point of each card segment as the web is fed to a film mounting station. Film negatives cut from a strip of developed film are sequentially positioned in registry with the optical centers in the apertures of the card segments as the web advances through the film mounting station. An adhesive releasably secures the negatives in overlying relation with the apertures on one side of the cards to expose through the apertures a selected composition of the negatives.

Abstract: A battery holder for containing an electric storage battery is transported by a lift unit on a mobile vehicle. The lift unit is pivotally mounted at a rearward end portion of the vehicle to move into surrounding relation with the battery holder positioned on the ground. The lift unit is pivoted upwardly to raise the battery holder to a preselected elevation within the minimal lateral and overhead clearance available in an underground mine. The lift unit includes a pair of lifting forks extending in spaced parallel relation from the vehicle within the lateral dimensions of the vehicle. The lifting forks have a configuration adapted to permit downward movement of the forks into engagement with the ground to pick up a battery holder positioned on the ground. The lifting forks extend laterally of the battery holder and engage the holder for vertical movement to an elevated position that does not exceed the uppermost position for transportation of the battery in areas of minimal overhead clearance.

Abstract: Upon completion of dislodging and transporting mine material from an underground mine, the mine is converted to a repository for the disposal of hazardous waste. The mine includes a network of connected chambers each formed by surrounding sidewalls into which parallel spaced boreholes are drilled to dislodge mine material from a seam in the rock formation. For use as repository, each borehole is lined with a layer of water permeable material. Drums containing hazardous waste are encapsulated within spherical cement modules. The modules are positioned in spaced relation within the boreholes. Shock absorbing reinforcing material fills the voids within the boreholes surrounding the modules to protect the modules from damage due to seismic disturbances in the underground formation. Each of the cement modules is ventilated to dissipate heat through an air plenum into the central chamber.

Abstract: Exhaust gases containing oxides of nitrogen and sulfur from a fired process heater, a fossil fuel fired boiler, or a chemical process are diverted from a stack prior to admission to the atmosphere through a duct system containing heat exchangers that reduce the exhaust gas from an elevated temperature, if any, to about ambient temperature. Any heat extracted from the exhaust gas may be transferred to the boiler feed water which would serve to reduce the energy cost of operating a boiler. Once the exhaust gas is cooled to about ambient temperature, the gas is then mixed with an oxidant, such as ozone, at a preselected molar ratio to transform the oxides to higher orders of nitrogen and sulfur oxides to increase the absorbability of the nitrogen and sulfur oxides in a reagent solution. The reagent absorbs the oxidized contaminants from the exhaust gas. The oxides are transformed to dilute acids which are then neutralized to form salts that are acceptable for discharge to a municipal waste water treatment plant.

Abstract: Exhaust gases containing oxides of nitrogen and sulfur from a fired process heater, a fossil fuel fired boiler, or a chemical process are diverted from a stack prior to admission to the atmosphere through a duct system containing heat exchangers that reduce the exhaust gas from an elevated temperature, if any, to about ambient temperature. Any heat extracted from the exhaust gas may be transferred to the boiler feed water which would serve to reduce the energy cost of operating a boiler. Once the exhaust gas is cooled to about ambient temperature, the gas is then mixed with an oxidant, such as ozone, at a preselected molar ratio to transform the oxides to higher orders of nitrogen and sulfur oxides to increase the absorbability of the nitrogen and sulfur oxides in a reagent solution. The reagent absorbs the oxidized contaminants from the exhaust gas. The oxides are transformed to dilute acids which are then neutralized to form salts that are acceptable for discharge to a municipal waste water treatment plant.

Abstract: An upper carriage floats on the surface of a settling pond or tank of liquid containing sedimentation settled out to form a bed of sludge in the bottom of the tank. A scraper assembly is suspended from the upper carriage by flexible cables or chains to a preselected depth in the tank. Scraper blades supported by the scraper assembly extend downwardly into contact with the sludge bed. The carriage is propelled on a looped cable across the surface of the tank and applies a tractive force through the suspension cables to the scraper assembly. As the submerged scraper assembly advances, the scraper blades apply a shear force to dislodge the sludge from the bed and direct the sludge to a pump carried on the submerged scraper assembly. The dislodged sludge is pumped through a hose from the tank.

Abstract: An image of an out-of-scale aerial survey photograph is projected onto a reflective surface of an unstretched, flexible mirror vertically positioned in a frame. The back of the mirror is connected to a plurality of control rods arranged in a coordinate system. The control rods are horizontally, movably supported on the frame so that the mirror is supported vertically free of tension. The mirror reflects the image onto a template having key points which also appear on the photograph. The control rods are selectively moved toward or away from the mirror to deform the mirror without inducing tension in the mirror so that adjacent areas of the mirror surface are not deformed as the reflected image is brought into register with the corresponding image on the template. Once an area of the mirror is deformed, the control rods are locked in position to prevent interaction by the deformation of other areas of the mirror.

Abstract: A bullet holder for extracting a bullet from the cartridge casing that includes an elongated body portion having arm members pivotally connected at one end and movable toward one another in a pincer-type movement. Intermediate the arm members is positioned a bullet retaining portion having a plurality of oppositely positioned recesses forming holes of selected diameter corresponding to selected bullet calibers. The assemblied cartridge casing and bullet is secured in the chuck of a loading press. The chuck is moved to an initial position for engaging the bullet by the holder in a selected one of the holes formed by the recesses. The arm members are squeezed to frictionally engage the bullet so upon downward movement of the cartridge casing, the bullet is retained stationarily positioned to separate the cartridge casing from the bullet.

Abstract: A loose fitting garment for use as a costume on a doll or an adult is styled for presentation of a first selected costume design. The loose fitting garment includes, on one surface, a design corresponding to the style for the first selected costume design. The opposite or second surface of the garment includes a design representative of a second selected costume design. The garment is reversible to convert the costume from the first selected costume design to the second selected costume design. To facilitate a change in the costume, the garment includes a mask which is featured as a part of the costume for the second selected costume design. The mask is secured to the garment in a position to be concealed from view when the garment is presented to display the first selected costume design on the wearer.

Abstract: A nozzle assembly includes a sleeve, a nozzle having an interior opening and slidable within the sleeve and a plunger that enters the interior opening of the nozzle. When the nozzle is slid within the sleeve, the plunger coacts with the nozzle to clean any foreign substances present within the nozzle and remove a clog in the nozzle.

Abstract: A plurality of screening stations are arranged in a circular array around a continuous conveyor for advancing in step-by-step fashion a plurality of modules from station to station. A module is provided for each station and includes a holder for receiving and securing in place a glass panel for photoprocessing red, blue, and green pixels on each glass panel in the fabrication of a cathode ray tube. The glass panels are supported on each module for rotational and angular movement controlled by a drive mechanism housed on each module. A controller for initiating programmed motion of the glass panel operates the drive mechanism of each module in response to the actuation of selected magnetic switches corresponding to the operations to be performed at a specific station.

Abstract: A loose fitting garment for use as a costume on a doll or a adult use is styled for presentation of a first selected character in a costume. The loose fitting garment includes, on one surface, a design corresponding to the style for the first selected character. The opposite or second surface of the garment includes a design representative of a second selected character. The garment is reversible to convert the costume from the first selected character to the second selected character. To facilitate a change in the costume, the garment includes a mask which is featured as a part of the costume for the second selected character. The mask is secured to the garment in a position to be concealed from view when the garment is presented to display the first selected character on the wearer.

Abstract: A stator housing surrounds the portion of a rotor having a magnetic flux carrying member extending around the rotor within the stator housing. A plurality of electromagnets are supported by the stator around the periphery of the rotor oppositely of the magnetic flux carrying member. Each of the electromagnets includes a stacked arrangement of laminations having an E-shaped cross-sectional configuration. Each lamination includes a pole tip in close proximity to the surface of the magnetic flux carrying member to form an air gap. Magnetizing coils extend around the legs of the E-shaped laminations. When electrical current is supplied to the coils, magnetic forces are exerted upon the magnetic flux carrying member enabling the rotor to be positioned in a levitated state within the stator housing.

Abstract: A valve body includes a chamber for the flow of fluid between an inlet and an outlet thereto. The chamber includes an upper portion with an opening therethrough and a lower portion including a valve seat between the inlet and outlet. A bonnet is positioned in the chamber upper portion and is connected to the valve body and extends upwardly therefrom. The bonnet includes a passageway, and a stem is positioned in the passageway for longitudinal movement into and out of sealing relation with the valve seat. An air operator is connected to the upper end of the stem and is connected to a source of fluid under pressure, such as compressed air, which is supplied by remote control to the air operator to control reciprocation of the stem to open and close the valve. The air operator includes a base connected to the bonnet in surrounding relation with the stem and positioned in spaced relation with a piston connected to the upper end of the stem to thereby form a fluid chamber.

Abstract: A mechanical anchor including an expansion shell and a camming plug positioned in the shell is threaded onto the end of a mine roof bolt. A roof support plate is carried on the opposite end of the bolt. The mechanical anchor is inserted in a bore hole drilled in a rock formation with one or more resin cartridges advanced by upward movement of the bolt to the end of the bore hole. The cartridge is ruptured by upward thrust and rotation of the bolt to release the resin components for mixing. A stop device extending through the plug abuts the end of the bolt to prevent axial movement of the plug on the bolt when the bolt is rotated in a preselected direction to mix the resin components before the shell is expanded. Rotation of the bolt continues without expansion of the shell for a period of time to permit formation of a curable resin mixture.

Abstract: A mechanical anchor including an expansion shell and a camming plug positioned in the shell is threaded onto the end of a mine roof bolt. A roof support plate is carried on the opposite end of the bolt. The mechanical anchor is inserted in a bore hole drilled in a rock formation with one or more resin cartridges advanced by upward movement of the bolt to the end of the bore hole. The cartridge is ruptured by upward thrust and rotation of the bolt to release the resin components for mixing. A stop device extending through the plug abuts the end of the bolt to prevent axial movement of the plug on the bolt when the bolt is rotated in a preselected direction to mix the resin components before the shell is expanded. Rotation of the bolt continues without expansion of the shell for a period of time to permit formation of a curable resin mixture.

Abstract: A take-up roll is mounted transversely on the headboard or cab of a truck and a flexible tarpaulin-like cover is rolled up on the take-up roll, which is rotatably mounted on the cab. A free end portion of the cover is connected to the cross bar of a bail, which is pivotally mounted outboard the side walls of the open bed of a truck. In the forward position of the bail, the cover remains rolled up on the take-up roll. The rolled up cover on the take-up roll exerts a force overcoming a rearward spring force on the bail to maintain the bail in the forward position. A reversible motor is drivingly connected to the take-up roll to rotate the take-up roll in a first direction and unroll the cover by releasing the spring force normally applied to the bail to thereby pivot the bail on the truck side walls and unreel the cover in overlying relation with the open bed until the bail has pivoted to its rearwardmost position and the bed is covered.

Abstract: A firearm, such as a pump action shotgun, includes a barrel connected by a magazine cap to a receiver. A fore end assembly is connected to the receiver and includes a magazine tube positioned below the barrel. A tubular recoil buffer surrounds the magazine tube, and a slide bar arrangement extending from the recoil buffer connects the recoil buffer to the receiver. A cup-shaped fore end is adapted to receive the recoil buffer and is preferably fabricated of a light weight material, such as aluminum or plastic. The fore end has an internal shoulder, and a compression spring is positioned in the fore end in surrounding relation with the recoil buffer. The coil spring has opposite end portions and one end portion abuts the fore end shoulder and the opposite end abuts a spanner nut. The spanner nut is threadedly connected to the end of the recoil buffer.