Abstract: To enable the storage and retrieval of a plurality of different aliquot valves of blanking standards or serums for photometric comparison with plural test sample aliquots processed in a colorimeter of an automated chemistry system that does not contain a computer memory for its various operations, a blanking solution is fed into the system as if it was a test sample, plural aliquots of the blanking solution are taken and processed each with different reagents, the transmission of each processed blanking aliquot is converted to an analog measurement of absorbance and then converted into an equivalent digital value that is stored in a simple memory until subsequently needed. Thereafter, by an addressing of specific colorimetric measurements on then present test sample aliquots in the colorimeter, the blanking values are called from memory and converted back to their analog values for photometric comparison with the test sample aliquots.

Abstract: A machine for cross-cutting a web of material. A roller-mounted knife carrier is supported along its length on a bend-resistant support by supporting plates which are rotatably driven in synchronization with the knife carrier. The plates are of generally circular configuration with recesses on the circumference thereof to permit passage of the knife therethrough.

Abstract: A rotatable assembly having a plurality of groups of three outstanding finger members spaced along an elongate drum of generally rectangular cross-sectional configuration. Two of each group of finger members are located in a common plane and the third intermediate finger member lies in a plane staggered relative to the plane of the said two finger members. The assembly is caused to rotate so that the finger members will contact fruit to be picked from a tree or the like. The fruit first contacts one finger member and is wedged between it and a next adjacent finger member lying in the same plane. As the assembly continues to rotate, the fruit is pivoted by reason of being wedged between the fingers, to twist the fruit relative its stem and enhance removal from the tree.

Abstract: A particle analyzer of the Coulter type has at least first and second sensing zone arrangements, each having substantially the same dimensions and each generating a train of particle pulses in response to passage through the respective sensing zone of a sample containing a plurality of particles to be counted. A summing circuit connected to the output of each sensing zone sums together each of the trains of particle pulses to develop a summed train of pulses. Additional circuitry is connected to each sensing zone and the summing circuitry. This circuitry is operative to change mathematically at least the number of particle pulses in the summed train of particle pulses. The mathematically changed summed train of pulses and the train of pulses from the first and second sensing zones then are accumulated to produce an error corrected particle pulse count.

Abstract: A rotary type engine is modified to be used as an air compressor and the air compressor is employed in an air cooling system. In the air cooling system, the air compressor supplies compressed air to a heat exchanger which reduces the temperature of the compressed air. The cooled compressed air is allowed to expand and cool within an expansion cavity of the compressor, and the rotation of the compressor forces the cooled air to emerge from an exit port in the compressor.

Abstract: A wheeled service vehicle for manhole operation adopted for towing and comprising a chassis frame mounting a variety of equipment, the vehicle and equipment all being self-contained and including a prime mover with several pieces of equipment driven thereby. A housing for the vehicle is independently removable from the chassis frame without disturbing the equipment thereby making access and servicing of the equipment a simple matter. The equipment includes a generator driven by the prime mover to provide electrical power, a water pump driven by the prime mover and means for conditioning air supplied by a blower powered by the generator. Novel heat exchange means enables the air furnished by the blower to be warmed by the exhaust and coolant of the prime mover. The prime mover is fueled by bottled fuel and means are provided to warm the bottles for cold weather operation.

Abstract: A joint which is made up of exhaust pipes formed with beaded ends or with a beaded end on one pipe and a flared end on the other pipe, in any case either with or without suitable gasket means. A clamp having a concave groove engages the protrusions on the ends of the pipes of the joint and wedgingly forces them together as the clamp is constricted.The clamp is made out of two halves which are hingedly connected at the first end of each and which are adapted to be secured by a bolt at the second end of each, there preferably being a nut permanently welded to one of the second ends coaxial with a first perforation in that end and a second perforation in the other of the second ends to pass the bolt to the nut. The hinged connection is preferably non-separable.

Abstract: The pulse amplitude discriminating circuit is utilized in a system where particles in a fluid are caused to flow through a sensing zone and a particle pulse is generated for each particle sensed with the amplitude of each pulse being related to the size of the particle sensed. The discriminating circuit is operative to determine which pulses have an amplitude falling between predetermined upper and lower amplitude levels, for remembering each pulse while the determination is being made and for passing to a pulse analyzing circuit only the pulse heights of those remembered pulses which have an amplitude falling between the predetermined upper and lower amplitude levels.

Abstract: In both the method and system for clearing the debris from the aperture of a particle study device combinations of pulses of predetermined, waveform amplitude and frequency are developed and coupled through the conductive fluid passing through the particle study device aperture. The pulses cause the fluid in the aperture to vaporize and form a gas. The gas explodes away any debris clogging the aperture as it escapes from the aperture.

Abstract: A particle separator for separating particles suspended in a fluid according to certain characteristics, including a device for adjusting an electrical delay to be equal to the time between the emergence of a particle from a jet forming aperture to the point of break-off. The device includes a variable scale graticule coupled to a potentiometer.

Abstract: A device for determining and temporarily recording the time of occurrence an event in which a time-counter is connected to a memory and to a time-indicator. The time-indicator, time-counter and memory are connected through activator means such that when the activator means are activated, the time-indicator will indicate the time when the connection has become effective.

Abstract: An automatic diluting device draws and dispenses a volume of sample along with a volume of diluent so as to maintain a precise ratio between the volume of sample and the volume of diluent. The device includes a diluent chamber having a plunger therein which is reciprocable between a first and second position for displacing a first volume therein when moved, and at least a first sample chamber having a plunger therein reciprocable between a first and second position for displacing a second volume therein when moved. The first and second volumes are arranged to have a fixed precise ratio with respect to one another for any equal distance moved by said first and second plungers in their chambers. A coupling device couples the plungers together for simultaneously reciprocally moving the plungers an equal distance in the chambers between first and second positions.

Abstract: A multi-purpose blood diluent for use in electronic enumeration of red and white blood cells and the determination of hemoglobin concentration and other classic parameters, mean cell volume and other measurements of blood cells and particles or measurements of blood cells and particles by means of particle analysis instrumentation of the Coulter type. The blood diluent is characterized as azide free, unreactive and osmotically balanced so as to be capable of affording reproducible and accurate hematological test results. The diluent employs an antibacterial agent which prevents adverse bacterial or fungi growths capable of interference with accurate counts and sodium fluoride to achieve stable conditions in red blood celll volume and aid in the complete conversion of hemoglobin in cyanmethemoglobin for hemoglobin determinations.

Abstract: A particle analyzer for obtaining a narrow distribution of particles suspended in a liquid wherein electric pulses are produced by moving the liquid through a sensing zone. The analyzer includes elements for differentiating the pulses, short circuiting to ground pulse portions of one state and measuring the heights of pulse portions of another state as indications of particle sizes.

Abstract: Method for producing an ejector device including forming a profile rail, drilling holes in the rail to receive ejector nozzles therein and inserting the nozzles in the holes, closing the ends of the rail with end walls, and severing a desired length of the rail to produce the device.

Abstract: An alignment device for machines which, after the shut-down of the machine, keeps the rotor in rotation until it has cooled down in order to avoid damage to the machine.The device comprises a gear element which at a certain number of revolutions of the rotor of the machine engages a gear element of the machine.The device may also initiate alignment from an idle position of the machine.

Abstract: A method for the elimination of sample turbidity in blood serum samples where the turbidity is caused by the presence of chylomicrons, by forming an interface between the sample and a fat specific solvent, centrifuging the thus prepared unit and thereafter either decanting the solvent or withdrawing the cleared serum.

Abstract: A packaging machine operative to sequentially fold separate cooperating carton blanks about lading and discharge a sealed package containing the lading in an automatic operation. The packaging machine is particularly adapted to cooperate with a lading loading ram which could be provided by a conventional case packer having a discharge horn through which the ram moves a quantity of lading. The carbon blank system includes a body blank having a center panel and alternate side panels with flanges hingedly connected along the longitudinal edges of the panels and along the ends of the side panels and a cover blank having a center panel and alternate side panels.

Abstract: A method for charging an electrophotographic member which includes rotating a number of elongate corona electrodes, which are positioned parallel to and a predetermined distance from a central axis, about the central axis while simultaneously applying a corona voltage to each of the electrodes whereby each develops a corona, so that a substantially uniform corona charge is applied to the entire electrophotographic member. An additional step, performed simultaneously with production of the corona and rotation of the electrodes, can be the movement of one of the rotating electrodes and the electrophotographic member relative to the other with a predetermined distance being maintained between the member and central axis. Apparatus employed to perform this method also is disclosed.

Abstract: The joint of the invention comprises exhaust pipes formed with beaded ends providing abutting flange-like surfaces that are axially forced together by a clamp applying wedging forces on the external beads. Modified forms of the joint have pilot extensions on one pipe of the joined pair, the bead on this one pipe in each case being spaced from the free end of the pipe. The pilot extension is telescoped within the other pipe bringing the beads together side by side and the clamp is engaged over both beads. In some joints, such as those formed in pipes made of a tough metal, a gasket may be inserted between the beaded ends.The clamp for the joints is one which has a concave groove engaging over the pair of beads to apply the axial force by the wedging action produced when the clamp is constricted. The preferred clamp is made in two halves which have a hinged connection of great simplicity comprising merely a rectangular bight formed on one end of one half and a tongue formed on one end of the second half.