The sealing of void spaces, e.g. as in geological formations and/or between metal shapes is accomplished with a liquid slurry of a particulate, water-soluble organic polymer in an organosolvent The mixture of the polymer and solvent has a controlled set time to allow the emplacement of the slurry as a liquid. The slurry then sets to form a sealing cementitious material.

Hydraulic press apparatus and methods for die-forming magnetic cores from a wound circular configuration to a generally rectangular configuration are described. The press is constituted by a pair of opposed relatively movable platens, each having a pair of L-shaped die bar assemblies pivotally mounted thereon and arranged so that the horizontal legs of the bars on each platen are interdigitatable and the vertical legs of the bars on one of the platens are interdigitatable with the vertical legs ...

Insulated wire as lower thread is sewed by a sewing machine to two perforated matrices superposed on one another. The tension of the nonconductive upper thread is such as to cause the wire to extend in loops into the perforations of the matrices. After sewing, the wire is so impressed into carrier material on a board that part of its surface projects therefrom. The carrier material is then cured and the matrices are removed by displacement parallel to one another, so that the upper thread is she...

Apparatus and methods for electrostatically coating a workpiece in which a spray of atomized coating material particles is charged electrically and thereafter confined within a surrounding shroud of moving air to control dispersal of the charged particles and to increase the charge potential carried by the particles. The shroud of air issues from the spray apparatus as a multiplicity of separate airstreams that extend toward the workpiece to be coated a distance sufficient to confine the charge ...

Methods and apparatus for generating two separated fluid flows that each include direct flow components as well as alternating, out-of-phase flow components, such separated flows being transmitted into two separate cavities that have interposed between them a mass capable of periodic movement responsive to the out-of-phase alternating flows. The direct flow component is discharged from each cavity through a passageway having entrances adjacent the ends of an enlarged central portion of the mass ...

An apparatus for removably securing a cargo barrier across a doorway in a freight car, or alternatively as a bulkhead from side to side of a freight car, which can most easily and cleanly be removed to open the doorway or bulkhead in order to remove the contents of the freight car. Such apparatus comprises one or more connecting straps connected (as hereinafter defined) to the cargo barrier; an anchor bar secured to the freight car structure about which the strap or straps are looped and/or cinc...

As a preferred mode for practicing the invention disclosed herein, one or more sets of selectively-fired perforating devices are positioned in a well bore and the first of two adjacent devices is actuated for producing a first perforation extending along a selected perforating axis into an adjacent earth formation. The second perforating device is then positioned immediately adjacent to the previous position of the first perforating device and directed along a second perforating axis closely par...

Braking methods and the apparatus therefor are provided in accordance with the teachings of the present invention. According to one embodiment of this invention the rotation of a rotating device is detected and the angular disposition thereof is determined. The relative angular disposition of said rotating device is compared with the time of occurrence of a condition requiring the arrest of said rotating device. A brake signal adapted to produce hysteresis braking of the rotating device is gener...

A method of making a heat exchanger of the kind consisting of a stack of sheet metal pressings in face to face relation, adjacent pairs of pressings providing between them alternately channels for flow of coolant and spaces for flow of air, in which method the pressings are joined together by cold welding operations.

Pain removing compositions for external use on warm blooded animals. A pain removing composition is made from acetic acid, urea, ammonium hydroxide, glycerol, and water and may be used with plastiquinone A in a solvent. A binder may be used to tie the components together. A binder contains lanolin, stearic acid, water, triethanolamine and mineral oil. When rubbed on an external part of an affected area of a warm blooded animal, pain is removed in a short period of time.