Abstract: A lethal service header box for use in manufacturing an air cooled heat exchanger having a front and a back plate, a top and a bottom plate and a left and a right end plate, each of the six plates having a planar external surface and each having an internal surface configured such that the header box is assembled by welding together the six plates, all welding being accomplished exteriorly of the box and within a wedge shaped cross-sectional environment in which the inner terminus of each weld cross-section is at a narrow weld ledge of at least one of the plates.

Abstract: A turbine/power transmission system using pressure fluid, i.e., steam to selectively drive one of a plurality of turbine wheels depending upon the power/torque output and rotary direction required of an output shaft.

Abstract: This describes a special means for attaching an accessory such as a trailer hitch or winch to the bumper of a vehicle. It includes an accessory mount or a wedge insert insertable into a mounting frame or bracket. A tongue and groove assembly cooperates between the bracket and accessory mount for holding the accessory mount in position. Means are also provided for reinforcing the bumper.

Abstract: A guide for use in a string of sucker rods rotated in tubing in a borehole, each guide being formed of an elongated, upright, cylindrical coupling body having female threads at the upper and lower ends for attachment in a string of sucker rods, and including a plurality of at least three recesses in the body cylindrical surfaces, there being a recess in at least each 120.degree. quadrant around the body, an axle received in each recess, the axis of each axle being parallel and spaced from the body longitudinal axis, and a roller rotatably received on each axle, the periphery of each roller extending exteriorly of the external cylindrical surface of the coupling body, the rollers being conical shaped on each end, and the roller serving to contact the interior wall of tubing in which the sucker rod string is rotated to prevent wear of the tubing and the sucker rod string.

Abstract: A method of manufacturing an internally clad tubular product employing a tubular host such as steel, including the steps of plating the internal surface of the tubular host with a low melting point bonding metal alloy, inserting a tubular clad member, such as of nickel base alloy, into the plated tubular host, circumferentially welding one end of the cladding member to one end of the host member directly and welding the other ends in such a manner as to incorporate a metallic gas reservoir, thus forming a subassembly, evacuating the annular space formed in the subassembly between the exterior of the cladding member and the interior of the tubular host of water vapor and oxygen, heating the subassembly to about 1650.degree. to 2000.degree. F. thereby melting the bonding metal alloy, and hot rolling the heated subassembly to metallically bond the cladding member to the tubular host by means of the mechanism of liquid interface diffusion bonding.

Abstract: A hair working glove comprising an inner glove shell and an outer glove shell each made of material essentially non-permeable to air with the outer glove shell surrounding said inner glove shell and forming a space therebetween. A warm air supply is provided to supply air to the space between the outer and inner glove shells and out holes in the palm side of the fingers of the outer glove shell. There is also comb segments attachable to the palm side of the fingers of the outer glove shell.

Abstract: A liquid level control responsive to the level of liquid in a vessel having visual verification of fluid level including a tubular body for attachment to an opening in a vessel, the body having aligned openings in opposite sides receiving a pivot shaft, a control box mounted on one side and receiving an extension of the pivot shaft, an arm having one end attached to the pivot shaft and extending out the end of the body into the vessel and having a float on the end which is responsive to the level of liquid within the vessel, a control system within the box actuated by rotation of the pivot arm, and a transparent sight glass sealably closing the end of the tubular body so that the operator can observe the liquid level in the vessel through the sight glass.

Abstract: A tool for facilitating the cutting of carpet which has been installed on a floor surface by glueing, or the lie, the tool comprising a pair of substantially identical plates secured in planar abutting relation, each plate being provided with an angularly orientated recess on the inwardly directed surface thereof, each recess for slidably receiving a cutting blade therein, fastening members are provided for removably securing the blades within the respective recess and for facilitating longitudinal adjustment of each blade within its respective recess for exposing a selected cutting edge of a blade for accomplishing the cutting operation, and an elongated handle member pivotally secured to the plates whereby the cutting tool may be moved across the surface of the carpet during the cutting operation while the operator of the tool remains in a substantially upright position.

Abstract: An apparatus for measuring one or more parameters of the subsurface environment, and telemetering one or more parameters of the subsurface environment to the surface. Apparatus at the surface includes a source of intermediate frequency and voltage, electrical energy for transmission down one or more conductors of a power cable or separate instrument wire to a downhole instrument package. This intermediate frequency voltage is converted to a power supply voltage for generating a high frequency FM signal, in accordance with the magnitude of one or more parameters of the environment. This frequency modulated signal is sent to the surface over the conductors of the power cable and ground. At the surface the signal is demodulated to produce a signal indicative of the transmitted parameter.

Abstract: An improved frame assembly for holding radiator heat exchanger core units required for cooling engines such as the locomotive engine. There are specially designed side frames on each side of the cooling core with special push-pad units between the side rail and the core. The push-pads include fixed sections which are fixed with respect to the side frame and movable sections which are movable therewith to provide for unequal expansion of the side frame and the core.

Abstract: A liquid end for a reciprocating pump having easily removable valves and valve retainers in which the liquid end has a cylindrical valve chamber communicating with the fluid inlet and fluid outlet and the pump cylinder, the chamber having increased internal diameter portions so that the internal diameter of each portion is slightly larger than the portion just below it, the intake valve being received on an internal ledge, and intake valve retainer engaging and holding the intake valve in position and having a cylindrical ceiling surface engaging a portion of a wall of the valve chamber, an exhaust valve supported on top of the intake valve retainer and exhaust valve retainer engaging the exhaust valve and holding it in place, the exhaust valve retainer having a circumferential cylindrical portion sealably engaging a portion of the valve chamber so that the valves may be removed by removing the chamber and each chamber may be removed by a short upward pull, each retainer, upon upward pull, immediately passing

Abstract: In an acoustical speaker having a movable diaphragm responsive over a range of frequencies, an air duct having a cross-sectional area less than that of the diaphragm substantially surrounding the diaphragm and in communication with one side thereof for acoustically isolating the diaphragm, dampening low-frequency ringing and acoustically loading the diaphragm for extending the frequency range to lower frequencies to enhance the performance of the speaker with small speaker enclosures. One embodiment provides for similar ducting for passive radiator diaphragms.

Abstract: A multikey keyboard for inputting data into a computer, wherein pressing a key places in circuit the point of intersection of a row conductor and column conductor respectively connected to portions of separate row and column sequential series of capacitors whose cumulative capacitance correspond to the specific row and columns of the pressed key, thus allowing the computer to establish which key was pressed by measuring the capacitance between the events involving said completed keyboard circuits.

Abstract: This is a new slide valve arrangement. It includes a housing having a longitudinal axis and a disc valve or gate movable by an external hydraulic or mechanical actuator. The gate slides along a first surface of a guide member. There is a throat member through which the material to be regulated is directed. The throat supports a fixed wedge which is thin on the exterior and has a greater thickness on the interior. A movable wedge having an inclined surface mating with the incline surface of the fixed wedge is provided. Means are provided to position the movable wedge between the guide member and the inclined surface of the fixed wedge such that as the temperature of the valve increases, the movable wedge is forced tighter and tighter between the fixed wedge and the guide member. This give additional compressive strength to the valve.

Abstract: This concerns a snatch block for free stringing rope to a sheave supported between two side plates, one of which is movable. One of the side plates, called a swing plate, is rotatable with respect to the sheave. A removable bolt holds the two side plates together. Means are provided to prevent the bolt from falling completely out of the non-movable side plate when the other side plate is moved. Further, special means are provided for the bolt to help support the spool and further novel means are provided to aid in preventing the trunnion and hook from falling off the spool when the side plate is swung free.

Abstract: Closures for double pipe and hairpin-type heat exchangers that permits opening the tube side of the closure without losing the shell side fluids or seal. A flanged split thrust ring is positioned between the shell side flange and the tube side flange and integrally connected with the tube sheet. Each connection bolt through the flange has a shoulder or threads interconnecting with the thrust ring for applying a force to maintain the seal between the shell side flange and the tube sheet.

Abstract: A bio-medical injector apparatus comprising a base unit having a skin engaging portion disposed at an angular orientation with respect to the longitudinal axis of the base unit for supporting and maintaining a hypodermic needle at an optimum angular orientation for effecting an injection procedure, a carriage assembly reciprocally mounted on the base unit and carrying the hypodermic needle simultaneously therewith, a motor drive unit operably connected with the hypodermic needle for the preloading thereof with a suitable medication, a solenoid secured to the base unit and operably connected with the carriage assembly for a controlled reciprocation thereof for effecting the injection operation of the needle, and an electronic circuitry operably connected between a power supply and the motor drive and the solenoid for creating the logic necessary to perform the functions of the injector apparatus.

Abstract: A self-aligning and self-lubricating stuffing box for oil well polish rods, pump rods and the like, and comprising a housing disposed around the outer periphery of the rod and having an internal cooling chamber surrounding the outer periphery of the rod for retaining a fluid reservoir in engagement with the rod for an efficient lubrication thereof, at least one valved internal passageway provided in the housing for automatically directing the fluid to and/or from the cooling chamber as required during the operation of the polish rod during a well fluid production process, at least two longitudinally spaced bushing members disposed in the housing and in engagement with the outer periphery of the rod for assuring an efficient axial alignment between the housing and the rod during the reciprocation of the rod, and a swivel connection for overcoming any misalignment between the pump jack and the pumping "T" during the well production operation.