Abstract: The invention relates to a measuring method for determining the zeta-potential ZP of a material suspended in a liquid medium which comprises streaming the suspension in a laminar flow, subjecting the system to the effect of D.C. voltage, and determining the electroporetic velocity from the change of a flow velocity of a selected particle.

Abstract: There is disclosed a spraying gun in which the direction of the spray can be changed to make it possible to spray onto the back side of the object being sprayed. The gun comprises a feeding unit, a spraying unit and a connecting pipeline.

Abstract: The invention is a male contact element for low-insertion-force electrical connector of the type having a cylindrical pin portion prolonged at its extremity by a tapered portion terminating in a nose of constant-radius generatrices. The tapered portion has a length L such that 1.80d.ltoreq.L.ltoreq.1.96d, d being the nominal diameter of the cylindrical portion of the male contact element, and has a first ogival surface of revolution about the longitudinal axis of the contact with generatrices of constant radius, R such as 6.4d.ltoreq.R.ltoreq.7.9d, the first ogival surface connecting tangentially to the cylindrical portion, and a second ogival surface of revolution about the longitudinal axis of the contact constituting the nose of the contact of generatrices of constant radius r, having a value of 0.42d.ltoreq.r.ltoreq.0.52d, the first and second ogival surfaces connecting tangentially.

Abstract: A complex separation process and apparatus for decreasing non-radioactive salt content of waste solutions of nuclear power stations. The process significantly decreases in non-radioactive salt-content of waste solutions arising from nuclear power stations.Process is essentially based upon a suitable combination of up-to-date separating operations, such as precipitation, filtration, ultra-filtration, reverse osmosis, ion-exchange, evaporation and crystallization. Practically total amount of components carrying radioactivity (except tritium) can be effectively separated from the non-radioactive salts. Part of inactive salts (alkali nitrates) can be handled as industrial waste and the other part (boric acid) can be recycled. In the process precipitation, ion-exchange, reverse osmosis and crystallization are operations completing or replacing each other. Reverse osmosis is used not only for separating water and soluble, but for the separation of solved components.

Abstract: Extender apparatus for a caulking gun having an axially displaceable piston, a front face having an opening therein, and a trigger mechanism for incrementally advancing the piston along a predetermined longitudinal axis, the extender including: an elongated skeletal frame for supporting a cartridge of caulking compound; the frame having a planar rear wall having an opening therein and a planar front wall having an opening therein; an adapter for connecting the frame to the front face of the caulking gun; an adjustable pivot for adjusting the relationship of the frame to the front face of the gun; a flexible shaft mounting an auxiliary piston on its forwardmost end; a connector fixed to the rearmost end of the flexible shaft for connecting the piston of the gun in a manner whereby the flexible shaft may be advanced incrementally by the incremental movement of the gun piston; and whereby the auxiliary piston is adapted to extrude caulking compound from the cartridge.

Abstract: A telescopic cutting apparatus comprising an elongated outer tubular arm of not less than four feet in length; a first handle means coaxial with and closing off the lower end of said outer tubular arm; a biased electrical on/off switch means disposed within said handle means and being normally in the "off" position and requiring constant application of force to be translated into the "on" position.

Abstract: The invention relates to linear, thermotropic crosslinkable polymers, which comprises (A) polycondensing a complex dicarboxylic dichloride having the formula ##STR1## wherein Ar.sub.1 is ##STR2## Ar.sub.2 is ##STR3## Y is H, F, Cl, CN, phenyl, C.sub.n H.sub.2n+1, or OC.sub.n H.sub.2n+1, q is a cardinal number between 1 and 2, andn is a cardinal number between 1 and 4;provided that when X.sub.1 =OCO, then X.sub.2 =COO, when X.sub.1 =COO, then X.sub.2 =OCO, when X.sub.1 =NHCO then X.sub.2 =COHN, and when X.sub.1 =CONH then X.sub.2 =NHCO;(B) with an unsaturated dihydroxy oligomeric compound of the formula (III) ##STR4## present as an oligomer, where R.sup.1 is a linear, aliphatic, saturated, C.sub.2-12 moiety, or a C.sub.4-10 oxyaliphatic moiety;R.sup.2 is H or CH.sub.3 moiety; andm is a cardinal number between 1 and 4; at a mole ratio of from about 1:5 to about 5:1, at a temperature of from about 140.degree. C. to about 240.degree. C., for a time period from about 0.

Abstract: A housing for an armored connector, in which one of the elements of the housing comprises, on its periphery, a number of thin, elastic contact blades electrically connected with one another, as well as with the housing element which carries them, these contact blades coming to rest against the other housing element at the time of connection, characterized in that each contact blade extends essentially in the direction of the relative movement of the two elements of the housing at the time of connection and is comprised of a thin metal blade bent back in the shape of a U, the free end of which rest against the housing element which carries it, in such a way as to push elastically against the outside of the utility part of the contact blade upon contact with the said other housing element, the said contact blades being connected to a counterplate which ensures that they are securely attached to the housing element.

Abstract: Apparatus including a rotary drilling cutter and a spoil removal conduit for the digging of a deep trench, characterized in that the spoil removal conduit is gradually adjustable in length during excavation and comprises: (a) a first conduit section, arranged proximate to said rotary cutter, and comprised of associated slidingly adjustable rigid male and female telescopic tube elements; (b) a second conduit section comprising a flexible tube having two ends, said flexible tube being connected to said first conduit section by one of its ends, its other end being disposed in the vicinity of the ground at a predetermined spoil discharge point, (c) a pulley supporting said flexible tube between said two ends; (d) lifting gear for suspending said pulley; and (e) a first cable associated with said lifting gear for supporting said pulley at selected adjustable heights.

Abstract: A lighting apparatus is provided having a plurality N of light sources arranged annularly around the optical axis of a reflector. The efficiency of such an apparatus and its service life are improved by providing a central mirrored column which is symmetrically disposed with respect to the light sources. The column has C.sub.N or D.sub.N symmetry and reflects light emitted by the light sources away from the light sources themselves, thereby reducing the amount of light reflected back at the light sources and reducing their thermal load. The column has peaks that extend into the notional annulus on which the light sources are arranged to shield adjacent light sources from each other.

Abstract: An apparatus for the testing of spheres for geometric exactness, which comprises a light source, a projectable image within or outside of said light source, optical means for simultaneously directing light in two different directions wherein one of said directions is onto a sphere to be tested and the other of said directions in onto an imaging means, and means for directing light onto said imaging means either as reflected from the sphere to be tested, or both from the sphere and from the light source without the optical interposition of the sphere.

Abstract: A high speed, overhead loader mechanism is disclosed, for use in connection with an automatic lathe. A simplified, versatile basic vertical positioning mechanism is provided, which mounts on the spindle housing of the lathe and accommodates a wide variety of customized loading fixtures, for parts of various sizes and shapes. Also disclosed are unique forms of part feeders and ejectors for supply and discharge of parts to and from an automatic lathe.

Abstract: An assembly of eaves fascia, comprising: a fascia board for concealing a plurality of outward ends of rafters arranged in the roof eaves of a building; an eaves soffit board, set apart under the eaves, for obstructing a view of the inside of the eaves from below, an inward end of the soffit board being fixed onto an outer wall of the building; a curtain board, caused to link the fascia board and an outward end of the soffit board, for masking a gap between the eaves and the soffit board; wherein a joint of the fascia board and the curtain board is adapted so as to enable the curtain board to move relative to and around the fascia board, whereby the curtain board can be supported even in a tilted manner by the fascia board. In addition, the above-mentioned assembly of eaves fascia is adapted to connect the curtain board with an additional curtain board so as to extend downwards.

Abstract: The invention relates to an apparatus for effecting the sweep of a beam of light stricly plane and parallel to a given axis, comprising a sweeping mirror, mounted on an axis of rotation substantially perpendicular to the said given axis, and the plane of which substantially contains the said axis of rotation, and an optical device arranged substantially in the plane containing the said given axis of rotation. It comprises a first means of adjustment for adjusting the angle of incidence of the beam of light with respect to a predetermined plane passing through the said given axis and substantially perpendicular to the said axis of rotation of the mirror, and a second means of adjustment for adjusting the inclination of the axis of rotation of the mirror with respect to the said predetermined plane.

Abstract: An improved labelling system for automatically applying labels one at a time in sequence to a series of items, such as post cards, etc., is disclosed. Post cards or other articles are conveyed one at a time to a labelling position. Separately, a carrier web, releasably carrying adhesive labels, is also conveyed to the labelling position. The carrier web is sharply reversed about a narrow edge, enabling the label to be peeled off and applied to a post card or the like being conveyed automatically underneath. A plurality of pairs of elements, including drive rollers and pressure-applying devices cooperating therewith, are utilized to controllably advance the carrier web through the labelling unit. As a feature of novelty, the labelling unit is pivotally mounted in relation to the conveying means for the post cards or the like.

Abstract: The invention relates to a process for preparing sulphonyl-ureas of the general formula (I) ##STR1## wherein Ar.sub.1 represents a phenyl, naphthyl or thienyl group, the derivatives thereof substituted by C.sub.1-4 alkyl, C.sub.1-4 haloalkyl, (halo)alkoxycarbonyl, (halo)alkyloxy, nitro, cyano groups as well as by halogen atoms,Ar.sub.2 represents a phenyl, pyridyl, pirimidinyl or triazinyl group and the derivatives thereof substituted by C.sub.1-4 (halo)alkyl, C.sub.1-4 (halo)alkyloxy, amino, O-acyl, O-arylsulphonyl, O-(substituted carbamoyl) groups as well as by halogen atoms.

Abstract: An apparatus is disclosed for the continuous and reliable measurement of the yield of oil wells. The fluid from the well, consisting of mixture of oil and gas, is directed into a two-phase separator having separate outlets for gas and liquid. Within the separator, or in direct communication therewith, is a combined liquid level and pressure regulator, which comprises a float supported by the liquid, and upper and lower pressure-compensated slide valves directly mechanically connected to the float and movable vertically therewith, simultaneously progressively closing one outlet while progressively opening the other. Downstream of the pressure-compensated slide valves there are separate yield-measuring devices for the oil and gas output, and further downstream is a mixture, where the components are recombined and thoroughly mixed. A water content meter can also be provided in the flow path for the separated liquid.

Abstract: The present invention relates to a process for preparing fruit powder from fruit or fruit by-products of industrial processing of fruits, wherein the fruit of fruit by-product is cut up, and dried in microwave apparatus at a maximum temperature of about 65.degree. C., and then comminuted.Preferred fruits processed according to the invention are apple, fruit with pits, berries, citrus fruit, and tropical fruit.The fruit powder according to the invention can be used for human consumption and fodder.

Abstract: The invention relates to a mechanism in a bin-dumping device for gripping portable bins, to empty them into a truck for collecting waste, particularly household garbage, the gripping mechanism comprising a chassis connected to the dumping device and having at its upper part one or several shaped sections, particularly in the shape of a comb, adapted to be engaged under a collar provided at the upper end of the frontal wall of the body of the bin. It comprises, at the lower part of the chassis (1), at least one support devices (7) adapted to come into contact with the frontal face (5) of the bin (4), preferably at its lower half, said one or more devices being controllable for being applied forcefully to the bin during at least part of its path of displacement, during the operation of the dumping device.

Abstract: A window grating arrangement is placed across a window opening in a building wall to keep out burglars but can be removed from the window opening alongside the wall in a required time, especially so as to enable dwellers to flee in an emergency. The window grating arrangement is so constructed that a pair of parallel stationary supports are fixed on the surrounding portions of the window opening in the wall while a mobile assembly of protective bars are sustained slidably on the supports.