Abstract: A push-pull slipsheet handler mountable on a standard hook-type lift truck carriage compatibly with load-handling forks mounted on the carriage. The slipsheet handler comprises a push-pull assembly and split platen, both of which receive their vertical support from the load-supporting surfaces of the forks. Attachment of the push-pull assembly to the lower hook-type bar of the carriage provides resistance against fore-and-aft movement of the slipsheet handler. To convert the truck rapidly to a fork-type truck capable of handling standard rigid pallets rather than slipsheets, the platen may be quickly removed leaving the push-pull assembly in place or, alternatively, the push-pull assembly and platen may be removed as an integral unit.

Abstract: A novel apparatus for semi-automatically baiting the hooks of long-line used in commercial deep sea fishing. The apparatus includes a bait holding receptacle, a slotted separator positioned in or in association with the receptacle and extending from substantially end to end thereof, whereby ground-line with leader periodically attached to the ground-line is passed behind the separator such that a gangion portion of the leader extends through the slot in the separator and the hook of the leader secures itself to a piece of bait held in the bait holding receptacle.

Abstract: A method and apparatus for analyzing cardiac electrical activity and other life signs, and triggering a therapeutic current. A signal representative of cardiac electrical activity is analyzed by two distinct analog circuits and a logic protocol is provided to identify cardiac arrhythmia based on the outputs of the circuits and the presence or absence of respiration. One circuit employs comparison of the electrical signal with a previous peak value thereof, and is characterized by its tendency to double-count some QRS complexes. The other circuit compares the sum of the rectified and low-pass filtered signal plus the derivative of the signal to a reference level, and compares the rectified and filtered signal to a threshold level, to identify QRS complexes while largely ignoring ventricular fibrillation.

Abstract: Alternating current carried in a high voltage conductor is sensed by a toroidal coil to produce a first low level signal representative of the alternating current signal. Transmitter means operating at or near the potential of the conductor and remote from electrical ground receives the low level signal and in response produces a series of modulated pulses containing amplitude and phase angle replica information representative of the high voltage alternating current signal. Advantageously, the transmitter may be powered by a power supply deriving power from the high voltage conductor. The pulses produced by the transmitter may be transmitted to a receiver operating at or near ground potential, which receiver then converts the pulses into a second low level signal representative of the high voltage alternating current signal in both amplitude and phase angle.

Abstract: A hammer assembly for a side hammer percussion lock is comprised of a hammer which is displaceable relative to the firearm from its normal operative position to a safety position where it cannot be brought into contact with a percussion cap placed on the firearm. In one embodiment of the invention the hammer is displaced by rotating it about an axis which is perpendicular to the axis about which the hammer is rotated between its cocked and firing positions. In another embodiment of the invention the hammer is displaced to its safety position by being slidably translated relative to the firearm. In the rotating embodiment, detents are provided for fixing the hammer against inadvertent movement from its desired position. In the sliding embodiment a lock is provided to prevent movement of the hammer from either its normal or safety position without first releasing the lock. A cam is provided in both embodiments to lift the hammer slightly off of the percussion cap when it is moved out of its normal position.

Abstract: A biological signal source amplifier having a rapid overload recovery capability and an output reference level translation feature. The amplifier responds to input signals of excessive amplitude by actively decreasing the response time of a reactive input coupling circuit when the input signal crosses predetermined dynamic limits. A differential amplifier is used in such a way as to produce an output referenced to a voltage level other than power supply ground. A level translation feature is provided for translating the output signal to the input of a subsequent circuit having a different reference level without introducing a dc offset or other associated amplitude distortion, or effects of capacitive coupling on low-frequency response.

Abstract: A process is disclosed for the recovery and reuse of heat contained in the wet exhaust gases emanating from a solids dryer or liquor concentrator, particularly one in which drying or concentration is facilitated by purging the vapor with some noncondensable gas such as air or nitrogen. Water or solvent vapor in the moist exhaust mixture is separated from the noncondensable gas or gases by preferentially passing the vapor through a semipermeable membrane. The water or solvent vapor is then compressed and subsequently condensed in a heat exchanger, permitting recovery of its latent heat of vaporization for reuse in the evaporation process. In a drying process, this recovered energy is conveniently used to reheat the dry gases that exit from the membrane separator, permitting the hot, dry gases to be recirculated through the dryer. Alternatively, an indirect heat exchanger may be used to transfer this heat to the material being dried.

Abstract: A method for enhancing the recovery of oil from underground formations includes alternately using a single bore hole as an electrode well and a producing well by placing a first electrode in electrical contact with the oil-bearing formation through the bore hole and passing electrical current through the oil-bearing formation which has been infused with an aqueous electrolytic liquid to a second larger electrode in electrical contact with earth material, and creating sufficient heat and current density proximate the first electrode to precipitate a local exothermic electrochemical reaction producing hot gases which pressurize the formation, thin the oil and break the oil out of the formation matrix. After the formation has been adequately conditioned by the reaction, oil is produced from the bore hole where the beneficial aspects of the reaction are greatest. Preferably, the electrical current employed is alternating current having a substantially rectangular waveform.

Abstract: Wear-resistant and shock-resistant tools are constructed by preforming carbide-containing working parts of high wear resistance and hardness and attaching them to a softer base metal of the tool by means of a highly shock-resistant steel-to-steel fusion weld. The working part is preformed by powdered metallurgy techniques utilizing steel powders having carbide-forming constituents therein which form carbides along the grain boundaries of the steel uniformly throughout the working part as a result of sintering of the compressed powders. Thereafter the fusion welding process renders the carbide structure of the working part nonuniform for optimum shock resistance, without reducing the effective wear resistance thereof, while also forming a highly shock-resistance joint between the working part and the base metal of the tool.

Abstract: A method and apparatus for serially removing the forwardmost plate from a stack of plates comprises rotating a cylindrical carrier having a chordal segment defined on its periphery with the stack of plates oriented so that the forwardmost plate is tangentially adjacent to the periphery of the carrier. A vacuum source draws air into an air inlet located on the chordal segment thereby creating a low pressure area. Accordingly as the chordal segment becomes parallel with the stack the low pressure causes the forwardmost plate to be drawn into contact with the chordal segment and thus block the air inlet. The plate continues to rotate with the carrier until it reaches a desired location where an air valve causes the vacuum to be temporarily discontinued thus allowing the plate to drop free of the carrier. An advance mechanism causes the stack to be advanced one plate thickness during each rotation of the carrier to position the next plate into contact with the carrier after each plate has been removed.

Abstract: A multi-pane thermally insulative window has a frame assembly having side rails each including a central section, side sections pivotably connected to the central section, and splines which hold the side members in a position relative to the central members in which portions of the side members and central members exert pressure toward one another against opposite sides of the margins of each pane of the window. Gas-containing spaces defined between parallel panes communicate sealingly with the interior of expandable gas reservoirs to contain gas having a low thermal coefficient of conductivity as insulating layers between parallel panes. Infrared radiation reflective material is provided as a film contained between sheets of glass or as a coating on a pane of the window to provide additional thermal insulation with relatively low decrease of visible light transmission through the window.

Abstract: A plunger-operated magnetically actuated switch enclosed in a generally cylindrical housing which may be mounted either within a cylindrical cavity or against a flat surface. A magnetic contact reed switch is housed alongside the guide for a plunger which carries a small permanent magnet. Depressing the plunger moves the magnet sufficiently to operate the magnetic reed switch. Optional plunger length and reed switch location provide for setting the switch in either a normally open or normally closed configuration. A flange is provided for securely mounting the switch unit in a cylindrical cavity. A resilient catch and a pair of mating hooks are provided to attach a flat mounting plate to the side of the housing and permit the switch unit to be mounted against a flat surface.

Abstract: A locking, quick-detachable-type firearm sling swivel having a gate which is shiftable, under the influence of a spring-biased plunger, between open and closed positions to enable mounting, demounting and securing of the swivel on a mounting base. Provided for locking the plunger positively and selectively against manipulation to effect opening of the gate is a position-changeable locking element mounted on the plunger for adjustment into and out of effective reactive engagement with the swivel's body. The locking element is captured on the plunger to prevent its inadvertent removal.

Abstract: A security device is presented which includes a dead man member to be imbedded in a door jamb and a sleeve and slide to be mounted upon the jamb. Also presented is a chain loop for coupling a door knob to the security device.

Abstract: Process for the separation and purification of oxygen and nitrogen is disclosed which utilizes solutions of oxygen carriers to selectively absorb oxygen from a gaseous stream, leaving nitrogen as a byproduct. In the process, an oxygen carrier capable of reversibly binding molecular oxygen is dissolved in a solvent solution, which absorbs oxygen from an oxygen-containing gaseous feed stream such as atmospheric air and desorbs oxygen to a gaseous product stream. The feed stream is maintained at a sufficiently high oxygen pressure to keep the oxygen carrier in its oxygenated form during absorption, while the product stream is maintained at a sufficiently low oxygen pressure to keep the carrier in its deoxygenated form during desorption.

Abstract: A method and apparatus for analyzing cardiac electrical activity and producing a signal representative of the occurrence of a QRS complex. A signal representative of cardiac electrical activity is analyzed by an analog circuit that compares the sum of the rectified and low-pass filtered signal plus the derivative of the signal to a reference level, and compares the rectified and filtered signal to a threshold level, to identify QRS complexes while largely ignoring ventricular fibrillation, and produces an output pulse representative of the occurrence of a QRS complex.

Abstract: A rose plant of the Hybrid Tea Class obtained as a seedling from a seed parent of the Cara Mia variety and a pollen parent of the Volare variety provides classic spiral buds, and long last bright red blooms which maintain their true color from bud through leaf drop, on a continuous basis in a greenhouse.