Abstract: The invention is a method and apparatus for substantially eliminating from a seismic signal channel an interfering hiline signal in a differential mode. Differential mode and common mode components of the interfering signal are coupled from the seismic signal channel, and are correlated with each other to obtain a correlation signal. The correlation signal and the common mode signal are multiplied to obtain a correction signal that is applied to the seismic signal channel to substantially eliminate the differential mode component of the hiline interference signal. The correlation between the differential mode and common mode signals is accomplished with both in-phase and quadrature phase components of one of them so that two correlation signals actually are produced.

Abstract: A molecular separation column for effecting the differential distribution, between two phases, of the components of a sample flowing therethrough. The column contains a substantially homogenous solid stationary phase which comprises a porous matrix of fiber having particulate immobilized therein, wherein at least one of said fiber or particulate is effective for molecular separation. The column is characterized by a reduced pressure drop, increased axial dispersion, more uniform peak shapes and better separations at high sample loading.

Abstract: An apparatus is provided for the continuous measurement of the bulk density of particulate material comprising an endless belt weighing conveyor having a compression zone and a weigh span downstream of the compression zone, means for feeding the material to said compression zone, a compression unit at said compression zone having a series of rollers an axes extending transverse to the direction of movement of the weighing conveyor, and transducer means provided at the weigh span for producing signals proportional to material weight. The rollers may be driven with a surface speed equal to the weighing conveyor belt speed and additional rollers may be mounted below the weighing conveyor to carry the load. The rollers are preferably embraced by a belt which gives a continuous surface and prevents tobacco getting between the rollers. In which case, the belt is driven with the same speed as the weighing conveyor belt, via a terminal roller and the other rollers follow.

Abstract: In the formation of the components of a jig for profile stitching of garment parts, a profile formed in one component is used to create associated profiles in a second component and subsequently one of the associated profiles of the second component is used to create a related profile in the first component.

Abstract: A linear peristaltic type pump capable of moving high viscosity material without creating an appreciable amount of heat includes a flexible conduit that is progressively compressed by a series of gear-driven compressing shoes that move linearly into and out of contact with the conduit by reciprocating motion, with a dwell time provided for each conduit compression event. A specific gear and linkage drive system is provided, including interengaged gears driving the compressing shoes via links on either side of the shoes.

Abstract: A chromatography column for effecting chromatographic separation of at least two components of a sample flowing through the column. The column comprises a housing and at least one solid stationary phase within the housing. The stationary phase has chromatographic functionality and is effective for chromatographic separation. Means are provided for radially distributing the sample through the stationary phase and for collecting the sample after the sample has flowed through the stationary phase. The stationary phase comprises:(a) a swellable fibrous matrix in sheet form having chromatographic functionality and being effective for chromatographic separation, spirally wound around the longitudinal axis of the solid stationary phase to form a plurality of layers around the axis; and(b) a spacer means between each layer for permitting controlled swelling thereof and enhancing the distribution of sample flowing radially through the stationary phase.

Abstract: A self-supporting fibrous matrix containing immobilized therein at least about 5% by weight of microparticulate, with an average diameter less than 1 micron, preferably fumed silica, or alumina, and flocculating amounts of an organic polycationic resin and an organic polyanionic resin, is useful for fluid treatment and filtration processes, especially delipidization and depyrogenation of fluids such as serum.

Abstract: A method for inactivating enzymes, particularly enzymes found in human serum. The method comprises reacting the enzyme in a suitable medium, e.g. human serum, with an inactivating amount of peracetic acid. In the preferred embodiment the treated serum is subsequently neutralized and dialyzed. Preferably, the serums are used as standards for calibration or as a control in assay kits, e.g. RIA, and EIA or enzyme kits, for the determination of specific ligands and enzymes.

Abstract: An immunoassay process for the detection of an antigen in a sample, which comprises: (a) forming a mixture of the sample with (1) a preformed complex of a primary antibody and a secondary binding macromolecule therefor, wherein the primary antibody is present at low concentrations and has substantial specificity for the antigen, the secondary binding macromolecule has substantial affinity for the Fc portion of the primary antibody, and the second binding macromolecule is affinity purified; and with (2) a detectably labeled form of the antigen; (b) incubating the mixture formed in step (a) for a time sufficient to allow the antigen and the detectably labeled antigen to competitively bind to the primary antibody of the preformed complex; (c) detecting the separated complex or the separated suspension medium.

Abstract: A folder for making Z-type folds in material as the material is fed therethrough, having a tongue creating slack in the material and a pair of folder blades cooperating to urge the slack material between the blades to form the fold as the material leaves the folder.

Abstract: An apparatus for use with a sewing machine to automatically hem the free ends of tubular portions of garments. The apparatus has a guide cylinder with a stop and a tension cylinder capable of being retracted, both of which are mounted on the sewing machine with a folding guide which is moveable between a retracted position and an operative position. A tube connected to a source of compressed air assists in removing the sewn garment from the apparatus.

Abstract: A cationic charge modified microporous membrane is provided. The membrane comrises a hydrophilic organic polymeric microporous membrane having bonded thereto, through a cross-linking agent, a charge modifying amount of a cationic charge modifying agent. The charge modifying agent is an aliphatic amine or polyamine, preferably tetraethylene pentamine, and the cross-linking agent is an aliphatic polyepoxide having a molecular weight of less than about 500, preferably 1, 4 butanediol diglycidyl ether. The microporous membrane is preferably nylon. The process for applying the charge modifying agent to the membrane, preferably comprises contacting the membrane with an aqueous solution of the charge modifying agent and then contacting the membrane with a substantially aqueous solution of the cross-linking agent. The preferred process uses high purity water, i.e.

Abstract: A natural bovine serum-derived serum which has low lipid levels and may additionally have similar globulin and albumin profile as fetal calf serum, as well as controlled levels of hemoglobin, enveloped viruses, steroid hormones, mycoplasma, cholesterol, triglycerides and pesticides, is useful for the promotion of growth of animal and plant cells in tissue culture.

Abstract: A cationic charge modified microporous membrane, process for producing said membrane and use thereof are provided. The membrane comprises a hydrophilic organic polymeric microporous membrane and a charge modifying amount of a primary cationic charge modifying agent bonded to substantially all of the wetted surfaces of the membrane. The primary charge modifying agent if a water soluble organic polymer having a molecular weight greater than about 1000 wherein each monomer thereof has at least one epoxide group capable of bonding to the surface of the membrane and at least one tertiary amine or quaternary ammonium group. Preferably, a portion of the epoxy groups on the organic polymer are bonded to a secondary charge modifying agent selected from the group consisting of:(i) aliphatic amines having at least one primary amine or at least two secondary amines; and(ii) aliphatic amines having at least one secondary amine and a carboxyl or hydroxyl substituent.

Abstract: A timing mechanism for use in an appliance such as a domestic clothes dryer, for example. The mechanism includes a synchronous motor and two output shafts. One output shaft is the conventional rotary output shaft of the speed reducing gear train associated with the synchronous motor. The second output shaft is the rotary axle of a Geneva follower gear that is driven by a Geneva driver gear that is in turn driven by a gear located intermediate the input and first output shaft of the gear train. The intermittent rotation of the second output shaft, wherein each intermittent rotation is accomplished in a relatively rapid time, permits a timing cam thereon to control a switch actuator to provide a precise and quite brief switching action of the order of five seconds, for example.

Abstract: A motor for driving a rotary drilling bit within a well through which mud is circulated during a drilling operation, with the motor being driven by a secondary fluid which is isolated from the circulating mud but derives energy therefrom to power the motor. A pressure drop in the circulating mud across a choke in the drill string is utilized to cause motion of the secondary fluid through the motor. An instrument which is within the well and develops data to be transmitted to the surface of the earth controls actuation of the motor between different operating conditions in correspondence with data signals produced by the instrument, and the resulting variations in torque in the drill string and/or the variations in circulating fluid pressure are sensed at the surface of the earth to control and produce a readout representative of the down hole data.

Abstract: A vaulting board is fastened at one end to a frame and slopes up under the action of two spaced apart, concave upwards, leaf springs carrying rollers on each end which contact the under side of the board. The spring centers are clamped in assemblies carrying transverse shafts at the bottom and the curved ends of J-bolts fit around the shafts and are connected to the frame, so that the springs pivot about the shafts axes under vaulting impact to equalize the stresses impressed in the board by the spring ends.