Abstract: Apparatus and method for inspecting the interior surfaces of devices such as vessels having a single entry port. Laser energy is introduced into a device under test and to a time delay. Light reflected from the interior surfaces of the device under test is introduced into one end of a dye-cell and the time-delayed light is introduced into the other end. The amount of time delay is adjusted to produce two-photon fluorescence in the dye-cell so that the amount of time delay is representative of the interior surfaces of the device under test.

Abstract: Apparatus and method for inspecting the interior surfaces of devices such as vessels having a single entry port. Laser energy is launched into the vessel, and the light reflected from the interior surfaces is interfered with reference laser energy to produce an interference pattern. This interference pattern is analyzed to reveal information about the condition of the interior surfaces of the device inspected.

Abstract: A rubber tired self powered mine vehicle utilizing a low profile fork lift assembly for handling palletized materials underground. The fork lift assembly consists of a fork lift plate and a parallel spaced apart base plate. The base plate is attached to the front of a mining vehicle by bucket mounting hole. The position of the base plate relative to the mine vehicle may be adjustable. The upper part of the fork lift plate is attached to the upper part of the base plate by set of horizontally spaced apart pivot links. The lower part of the fork lift plate is attached to the lower part of the base plate by a set of spaced apart pitmans. The long arm of each pitman extends between the base plate and the fork lift plate, while the short arm extends upward from the connection to the base plate. The short arm of the pitmans are engaged by hydraulic cylinders for raising and lowering forks which extend from the fork lift plate.

Abstract: A battery plug and receptacle each of which is formed from individual cartridges for each member. The cartridges are molded in a section of a circle. When installed enough cartridges are utilized to form a full circle. A keeper is provided for containing the cartridges within the housing. Lead screws which hold the line conductors in place are put in the side of the cartridges so that when the plugs are assembled the retainers cannot back out. A polarity adapter is provided on the male plug section which also acts as the keeper for the various cartridges. Three relatively large connectors are provided for positive battery terminal, negative battery terminal and ground. Two smaller connectors are provided for fault detection and control. The male plug control prong can be made slightly smaller than the other male prongs so that the control circuit is broken first when the plug is disconnected. This construction can be used to drop out relays and prevent the power circuit from being broken at the plug.

Abstract: A scoop car particularly adaptable for handling a mineral, such as coal, after it has been loosened and piled in a mine wherein the scoop car is provided with movable support wheels. The disclosed scoop car is moved by a traction or towing vehicle. The scoop car is connected to the traction vehicle by a pin or pivot connection to provide good maneuverability when moving to the unloading area. During loading of the vehicle, however, when the scoop car is pushed into the pile of material to be transported it is necessary to prevent movement around the pivot connection so that jackknifing does not occur. Restricted movement around the pivot is accomplished by a bolster mechanism which contacts both the traction vehicle and the scoop car keeping their longitudinal axis aligned. The bolster mechanism also forces the rear of the scoop car downward so that the scoop car is not pushed upward during loading.

Abstract: A time domain filter which separates one or more recursive pulse signal trains from other signals, pulses or noise, regardless of whether those signals are recursive or not.

Abstract: A water scoop constructed for use in conjunction with the scoop bucket of a rubber tired self-powered mining vehicle for collection, transporting and discharging water. The disclosed water scoop is constructed to engage the discharge blade on the scoop bucket so that when it is to be used it can be drawn into the bucket. The water scoop is a generally closed vessel having a configuration to fit in the scoop bucket. Vents are provided in the top rear portion of the water scoop to allow trapped air to escape as the water scoop is filled. A relatively large gate is provided across the exposed end of the water scoop and it is positionable to allow the passage of water. The gate of the bucket can be operated by a hydraulic cylinder which is powered by the hydraulic power unit which operates the scoop discharge blade. During use with the water scoop drawn within the scoop bucket, the hydraulic attachments to the blade operating cylinders are disconnected and attached to the hydraulic gate cylinder.

Abstract: A combined accelerator and brake assembly is adapted to be used on self-propelled rubber tired vehicles which have accelerator and brake actuating means either side-by-side or on opposite sides of the vehicle operator. The self-propelled rubber tired vehicle or tractor is often used in underground mining operations. The combined accelerator and brake assembly means is comprised of a mounting plate which holds the assembly and can be bolted onto the tractor or vehicle chassis. Two bearing supports with accompanying bearings are attached to the mounting plate through which a shaft is supported. A coaxial member extends the length of the shaft between the bearing supports and has bearings at the opposing ends thereof for engaging the shaft.

Abstract: The mounting ends of one superimposed pair of base legs of a lazy-tongs arrangement are pivoted to fixed brackets, and the mounting ends of the other superimposed pair of base legs are mounted for both pivotal movement, and sliding movement relative to the fixed pivot brackets. The opposite ends of a bridge means are each connected with one superimposed pair of the base legs at a point between the mounting ends thereof and the scissors pivot pins connecting the central portions of the base legs, and the central portion of the bridge means is connected to the outer end of the power piston of a hydraulic cylinder. When the hydraulic cylinder is activated to move the power piston outwardly, the bridge means acts to exert force simultaneously on both superimposed pairs of base legs to thereby forcefully extend the lazy-tongs arrangement.

Abstract: A mining machine having a tiltable and forwardly open scoop has a headlight mounted on the rear wall of the scoop and positioned to project a beam of light forwardly but along side a side wall of the scoop, no part of the headlight projecting above the machine. The headlight is mounted for sliding inwardly behind the scoop when a lateral obstruction is encountered but is biased to its outer position. An obstruction-engaging bumper link pushes the headlight inwardly. A linkage keeps the headlight beam horizontal when the scoop tilts.