Abstract: A method is provided for conversion of a permanently assembled ball bearing hub and spindle having ball bearing races constructed directly in the hub and spindle to a serviceable tapered roller bearing hub and spindle assembly. Additionally, the tapered bearing assembly of this invention is provided with grease passageways and a fitting so that the hub assembly may be lubricated with a grease gun without disassembly of the hub assembly.

Abstract: This invention is an extended range communications link having a first signal conditioning network located near and coupled to a computer. The network conditions keyboard clock, keyboard data, logic ground, mouse clock, mouse data, R, G, and B analog video signals, and multiplexes HS and VS sync signals. Conditioning of the video signals includes reducing their amplitude so the video signals do not significantly cause induced crosstalk in conductors adjacent to the video conductors. An extended range cable up to about 800 feet in length and having a plurality of conductors is coupled to a signal conditioning circuit and conveys the conditioned, above-named signals, in addition to power and logic ground potentials, to a second signal conditioning network. The network restores the analog video signals to their original levels by discrete video amplifiers having constant current characteristics that do not cause power fluctuations to occur in the power conductors of the cable, also reducing induced noise.

Abstract: A device for removing water from an aqueous phase at the bottom of a hydrocarbon fuel tank has an elongated tubular frame with open areas defined by longitudinal members and circumferential ribs. A pad of cotton carrying a coating of highly water-absorbent particles on its inner surface is disposed over the frame, and the pad is enclosed on the outside by one or more layers of cotton muslin. An outside cover of a plastic mesh placed over the fabric provides a limit to outward expansion of the pad upon absorption of water and forces expansion of the particles to occur in a radially inward direction. Absorption of water is enhanced by treating the pad with an aqueous solution of a surfactant and by keeping the device enclosed so as to retain its moistened condition until being placed in use. An elongated metal rod placed inside the tube along its axis serves both as a weight to retain the device in place and as a means for grounding any static electricity.

Abstract: Apparatus for measuring the degrees of roll of the body of a longwall shearing machine and providing signals proportional to the roll angle which are used to control drum cutting positions for controlling roof and floor horizons of a coal tunnel.

Abstract: A switching circuitry for coupling the power output of one of a plurality of power supplies to a keyboard. In this disclosure, a switching transistor of the circuit is coupled to switch power from a power supply output to a common point to which a plurality of like circuits and a keyboard are coupled. A differential amplifier having one input coupled to the common point and another input coupled to the power output of the respective power supply compares voltage on the common point to the voltage of the power supply. If the power supply voltage is higher than the voltage on the common point, the amplifier provides an enabling signal to the transistor, coupling power from the power supply to the common point. Conversely, if the voltage on the common point is higher than the voltage of the power supply output, the amplifier provides a disabling signal to the transistor, decouping the power supply output from the common point.

Abstract: A receptacle for containing medical instruments for sterilization is constructed having first and second broad sides connected along side and bottom edges. These sides are in turn constructed of an outer layer of flexible, durable fabric material, an intermediate layer of a plastic film material forming a barrier to microorganisms, and, in a preferred embodiment, an inner layer of the fabric material. A cuff extends from one of the edges adjacent the opening and is invertable over the opening to close the opening.

Abstract: A signal generator for generating an F1 keyboard keystroke and a clock signal responsive to expiration of a time delay sufficient for a computer to which the generator is coupled to partially complete a "boot" process to a point where the computer has detected a "keyboard disconnected" condition and entered a "wait" state. The generated F1 keystroke provided to the computer by the signal generator indicates to the computer that a keyboard is now coupled to the computer, allowing the computer to continue the "boot" process.In the embodiment disclosed, a time delay circuit provides an enabling signal after expiration of the time delay to a latch circuit, a clock signal generator, and a coupling circuit. The output of the latch circuit initially enables loading of a 12-bit shift register with data from a plurality of switches and thereafter switches the mode of the shift register from "load" to "shift.

Abstract: A process cartridge is provided for use in an electrographic apparatus having control means therein which is actuable responsive to insertion of the process cartridge in the apparatus to control operation of selected elements in the apparatus. The process cartridge is typically provided with a rotatable photosensitive drum upon which an image to be reproduced is formed and a plurality of processing components for acting on the drum. A toner hopper assembly is provided which includes a housing provided with a cavity having toner particles therein for deposition on the drum. The toner hopper defines one of the processing components, and actuating means is secured on the toner hopper for engagement with the control means in the apparatus for actuation thereof.

Abstract: A cue tip conditioning device and method is disclosed which includes a circular array of pins surrounded by a casing which may be manually held to tap the sharpened ends of the needles against the surface of a cue tip. A beveled surface allows the rounded side circumference of the cue tip to be tapped and perforated without contacting and damaging the cue stick.

Abstract: A slidably mounted curtain support for supporting a curtain, having an intermediate portion and a pair of spaced end portions at the end edge portions thereof in overlapping relation with at least one end wall of a pair of spaced end walls, which, with a rear wall, defines an enclosure such as a shower tub enclosure. The curtain support is mounted to a support rod and includes a primary arm and a secondary arm disposed in normal relation. The primary arm supports the portions of the intermediate portion adjacent to the end edge portions, and the secondary arm supports the end edge portions of the curtain. A downwardly extending arm serves as a handle to aid in the slidable movement of the certain along the rod and also engages the inner surface of the curtain to aid in preventing the curtain from billowing.

Abstract: Chip-impalement spears for rotary cutters are provided in a rectangular shape with a single sharp bevelled edge along the top of the spears and adapted to be placed parallel to a roller of the rotary cutter. The spears are embedded in one roller and arranged so that their sharp edges will come into slight contact with an opposing roller. Properties of the spears, in particular, hardness, are selected to enable the spears to be rapidly bent over in use, forming a chip-retaining barb. Spears having this capability may be obtained by making transverse cuts across a cutting rule.

Abstract: A fixture for securely holding a member such as a knife against a grinding element such as a grinding wheel during a grinding operation. The fixture includes a blank (knife) support assembly rigidly secured to the upper plate which is slidably supported on a lower plate which is rigidly attached to the grinding device. An adjusting mechanism is interconnected between the upper and lower plate for the slidable movement of the upper plate on the lower plate to retain the blank (knife) support assembly, and thus the knife edge, against the grinding device during the grinding operation.

Abstract: A communications extension link for use between a computer and display unit (K.D.U.) has at the computer site a first interface circuit connected to it and adjacent to the keyboard and display unit a second interface circuit connected to it. The two interface circuits may then be spaced up to 300 feet for a monochrome K.D.U. and up to 150 feet for a color K.D.U. by an extension cable. The first interface circuit includes capacitors connected between keyboard data and clock lines and a positive supply terminal, and TTL buffer amplifiers coupled in single ended configuration are placed in the signal lines relating to video information transmission. The video signals (VS, HS, primary RGB and second rgb) are then each attenuated prior to being passed over the longest cable run, after which they are received by a second interface circuit.

Abstract: A lighting system for discotheques includes a motor driven lamp unit which produces a variable direction light beam. A control device is provided remote from the lamp for controlling its operation, and in order to provide a distinctive visual effect, a control device is provided so that the lamp unit can only be moved by the motor while the lamp is de-energized.

Abstract: A tool for holding tungsten electrodes for sharpening by an abrasive wheel has a generally cylindrical body with an axial bore at each end for receiving an electrode. The bores have different diameters for use with two sizes of electrodes. The bore is sized to provide a gap between the electrode and the wall of the bore so as to allow the electrode to rotate when held against the wheel. The tool enables the electrode to be held against the grinding wheel at an angle as required for producing a sharp point.

Abstract: An adjustable sound attenuating device comprised of an elongated outer main shell of a predetermined diameter, with an inlet coupling and an outlet coupling. The device has located within the shell singular or multiple independent baffle components comprised of a solid baffle plate, a perforated baffle plate, an optional perforated baffle plug, and several chambers provided by the baffle components. The solid and perforated baffle plates have a funnel shape to provide for smooth directional flow of exhaust gases. The perforated baffle plate is pierced with a plurality of openings to allow for the flow of the exhaust gases through the chambers. The perforated baffle tube is pierced with inwardly angled louvers spaced equally around the circumference and staggered to follow a spiral path lengthwise around the perimeter of the tube for routing gases through the chambers.

Abstract: Apparatus for excavating ballast from adjacent to the ends of and beneath the cross ties of a railroad bed and for cleaning the excavated ballast for return thereof to the railroad bed. The apparatus includes a vehicle for supporting a pair of excavating assemblies on opposite sides of the vehicle. Each excavating assembly includes a pair of spaced excavating wheels for excavating ballast from adjacent to the opposite sides of the cross ties and an undercutter for excavating ballast from beneath the cross ties at opposite ends thereof. A discrete cleaning station is provided for each excavating wheel to receive and clean the ballast picked up by each excavating wheel. Means are provided for conveying and discharging the cleaned ballast back onto the railroad bed.

Abstract: Seaming tape made up of a composite multilayer material of specified composition is used to form bonded seams between pieces of composite chemical barrier fabrics. The tape includes a base multilayer material made up of a stacked, laminated array including an outside layer of ethylene vinyl acetate and successive layers of polyvinylidene chloride, ethylene vinyl acetate, and chlorinated polyethylene. Tape of this composition may be bonded to a variety of polymeric materials and provides an effective seam for some applications. A second multilayer film sheet bonded to the base sheet provides a more effective seam for forming a barrier to a wide spectrum of chemicals. The second film sheet includes an interior layer of ethylene vinyl alcohol sandwiched between layers of nylon or polyethylene.

Abstract: A fluid actuator assembly comprising a plurality of modules which are secured in serial relation to form the body of the fluid actuator. A replaceable liner, common to each of the modules, extends through the bores of the modules which make up the body. Means are provided to secure the modules in serial relation.