Abstract: A plastics button assembly comprises an outer body component, an inner body component trapped substantially non-retrievably within a recess in the rear of the outer body component, and a cloth cover substantially covering the front of said outer body component, the edges of which are trapped securely between the engaging surfaces of said outer and inner body components. A shank extends from within the recess of the outer component and the inner component is engaged about and supported by the shank. The inner component is a specially shaped annular plastic washer having a flat inner face and a contoured outer face. An annulus of reduced thickness extends about a central aperture, and this annulus is surrounded by an annulus of maximum thickness which tapers towards the periphery of the washer. This allows the plastics button to be assembled in a conventional two piece die set as used for metal shell buttons.

Abstract: A Faraday transducer for a marine speed indicator is sealed in a cylindrical housing so that it can be mounted in a boat hull with its base flush with the hull. A horseshoe magnet sealed within the housing has its poles located against the base surface and with 4 electrodes in the base surface located one on each side of each magnetic pole. The electrodes are connected together in such a way as to cancel out stray magnetic fields and to increase the Faraday emf produced by the relative movement of water flowing across the base of the transducer.

Abstract: A fog generator comprises a duct which is preferably vertical and very tall, an air mover for moving air down through the duct, an air director which includes a spout to direct the air emerging from the duct in a substantially horizontal stream in a chosen direction away from the duct and a fog generator which generates a fog into the moving air preferably after the air has left the spout. The spout is preferably rotatable in a horizontal plane. The invention enables a generated fog to be placed where required by the air stream in which it is entrained rather than relying on natural wind drift.

Abstract: A display unit for displaying indicia such as advertising material has a light box in which there are a series of lights. The box has a reflective surface capable of passing light outwardly from inside the box but reflecting light applied exteriorly of the surface. Indicia are mounted within the box carrying translucent and washed areas. Lighting of the lights displays the indicia and extinguishing the lights results in a mirrored surface only being apparent.Modification include making the masked areas of a reflective material to give a repeated reflection effect when the lights are lit.

Abstract: An electric coil is printed onto a flexible sheet so that it can be bent into any desired shape to create a complex magnetic field. A flexible parallelogram substrate, having a two-coil pattern printed thereon, can be bent into a cylinder so that the coil pattern at the ends of the cylinder generate an axial magnetic field while the remainder of the coil pattern on the cylinder can generate a transverse field varying continuously through 90.degree..

Abstract: A Multi-Level Logic Circuit is described, with the hardware of the circuit capable of being constructed to operate in a chosen base. The circuit includes at least: (a) One input level detector which can receive one or more multi-level inputs, (b) Control switching means, and (c) An output level generator delivering a single multi-level output.Various logic gates operating in any base can be derived from the generalized circuit of this invention. Basic multi-level logic gates include an (n-1) complementer, where an output of (n-1-a) is generated from a discrete input "a" where n is the base for which the circuit is constructed. A complementary maximum gate is also described in which the circuit provides the (n-1) complement of the highest logic level detected on input lines to the input level detector. Various other multi-level logic circuits can be constructed by combining the multi-level complementer, and multi-level complementary maximum gates.

Abstract: Compounds represented by the general formula (I): ##STR1## in which R.sub.1 represents ##STR2## A and B each represent H or a lower alkane optionally substituted with amino and/or hydroxyl functions, except that A and B are not both H; R.sub.3 represents H, OCH.sub.3, CH.sub.3, halogen, NH.sub.2, NO.sub.2, NHCH.sub.3, N.sub.3 (CH.sub.3).sub.2, N.sub.3, NHCOCH.sub.3, NHCOOCH.sub.3, N(CH.sub.3)COOCH.sub.3, CONH.sub.2 or CONHCH.sub.3 ; R.sub.4 represents H, alkyl, O-alkyl, CONH.sub.2, CONHCH.sub.3 or CONHCH.sub.2 CONHCH.sub.3, except that R.sub.3 and R.sub.4 taken together can represent --C.dbd.CH--CH.dbd.N--; R.sub.5 represents H, alkyl, O-alkyl, CONH.sub.2, CONHCH.sub.3 or CONH.sub.2 CH.sub.2 CONHCH.sub.3 ; R.sub.6 represents lower alkyl; R.sub.7 represents CH.sub.3 or C.sub.6 H.sub.5 (phenyl); R.sub.8 represents lower alkyl or C.sub.6 H.sub.5 (phenyl); R.sub.9 represents H, NHCOCH.sub.3, NH.sub.2 or N.dbd.CHN(CH.sub.3).sub.2 ; and R.sub.10 represents H or NH.sub.

Abstract: A cyclic shear energy absorber for absorbing energy due to induced motion between two members by plastic cyclical deformation of a central energy absorber core. The core is surrounded by a restraining device having a rectangular cross section. Layers of the inner walls are separated by layers of resilient material. The restraining element is confined in a cylindrical aperture formed in a resilient support having alternately arranged resilient layers and stiffener layers. The absorber is confined between two end plates capable of being coupled to associated structural members, such as a bridge support column and a base.

Abstract: 4-Carboxamidoacridine compounds represented by the general formula (I), ##STR1## where R.sub.1 represents H, CH.sub.3 or NHR.sub.3, where R.sub.3 is H, COCH.sub.3, SO.sub.2 CH.sub.3, COPh, SO.sub.2 Ph or lower alkyl optionally substituted with hydroxyl and/or amino functions;R.sub.2 represents H or up to two of the groups CH.sub.3, OCH.sub.3, halogen, CF.sub.3, NO.sub.2, NH.sub.2, NHCOCH.sub.3, and NHCOOCH.sub.3 placed at positions 1-3 or 5-8;Y represents C(NH)NH.sub.2, NHC(NH)NH.sub.2, or NR.sub.4 R.sub.5, where each of R.sub.4 and R.sub.5 is H or lower alkyl optionally substituted with hydroxyl and/or amino functions; andx is from 2 to 6,and the acid addition salts thereof, possess antibacterial and antitumor properties.

Abstract: A locking member 1 in the form of a collar can provide a strong mechanical joint between a tube 5 and an apertured plate 6. The locking member 1 has an outwardly directed flange 2 and an inwardly directed flange 4 and is accommodated on the end of the tube 5 which is then inserted in the aperture in the plate 6. Axial pressure applied to the end of the tube 5 will result in the deformation of the locking member and the tube end about the plate aperture resulting in a strong mechanical joint being formed between the tube 5 and the plate 6.

Abstract: A butt hinge has a pair of tapered leaves connected together by a removable pivot pin, an outer leaf having tubular portions at each end thereof for reception of the pivot pin, and having a central cut out area for reception of an inner leaf having an inner tubular portion for the pivot pin. Locating ribs are provided on opposite sides of the tubular portions, and together with central locating notches they facilitate the location and installation of the hinge on a door and jamb. The tapered over-lapping of the leaves avoids the need to provide rebates to receive the hinge, or the need to trim or bevel the edge of the door to prevent binding when the door is closed.

Abstract: The novel class of compounds of the present invention represented by the general formula (I): ##STR1## in which R.sub.1 represents H or OCH.sub.3, R.sub.2 represents H, OCH.sub.3, CH.sub.3, halogen, NO.sub.2, NH.sub.2, NHCOCH.sub.3 or NHCOOCH.sub.3, andR.sub.3 and R.sub.4 individually represent H, CH.sub.3, OCH.sub.3 or CONHCH.sub.3,and the acid addition salts thereof, have unexpectedly high potency and activity in in vivo antitumor tests. The compounds are also bacteriostatic, and show toxicity towards mouse, hamster and human tumor cell lines in culture.

Abstract: The specification describes a dry composition and aqueous solution useful in the mineralization of dental plaque. The solution contains 0.01 to 50% W/V of a substance metabolized by bacteria in plaque (urea is exemplified) to raise the pH of said solution, a physiologically acceptable source of calcium ions and a physiologically acceptable source of phosphate ions, both in concentrations to form a stable solution with respect to a calcium phosphate salt, and optionally a fluoride ion generating compound metabolized by bacteria in plaque to release fluoride ions and/or a water soluble fluoride salt, the pH of the solution being from 1 to 9, and the pH and calcium and phosphate ion concentrations being such that the solution remains stable and with respect to the calcium phosphate salt until the substance is metabolized by bacteria in plaque. Results of some dental trials are presented.

Abstract: Electronic arrangement for detecting and identifying individual balls in a table ball game involves the use of two or more distinct code elements embedded in the balls. When applied to a pool table, the balls landing in the pockets are conveyed by inclined ducts to an electronic detector coupled to a scoring device. The detector recognizes the resonant frequency of each code element and compares the codes detected with the combination of codes assigned to the different balls. The application of the invention to Kelly Pool and Poker Pool is described.

Abstract: A cyclic shear energy absorber for absorbing energy due to induced motion between two members by plastic cyclical deformation of a central energy absorber core. The core is surrounded by a restraining device having movable inner walls, preferably in the form of a deformable cylinder wound from a strip of material having a rectangular cross section. The restraining element is confined in a cylindrical aperture formed in a resilient support having alternately arranged resilient layers and stiffener layers. The absorber is confined between two end plates capable of being coupled to associated structural members, such as a bridge support column and a base.

Abstract: The novel class of compounds of the present invention represented by the general formula (I): ##STR1## in which R.sub.1 represents H or OCH.sub.3,R.sub.2 represents H, OCH.sub.3, CH.sub.3, halogen, NO.sub.2, NH.sub.2, NHCOCH.sub.3 or NHCOOCH.sub.3, andR.sub.3 and R.sub.4 individually represent H, CH.sub.3, OCH.sub.3 or CONHCH.sub.3,and the acid addition salts thereof, have unexpectedly high potency and activity in in vivo antitumour tests. The compounds are also bacteriostatic, and show toxicity towards mouse, hamster and human tumour cell lines in culture.

Abstract: Compounds represented by the general formula (I) ##STR1## in which R represents an aniline substituted in the para position by either --NHSO.sub.2 CH.sub.3 or --NHCOOCH.sub.3 and bearing either an --H or --OCH.sub.3 in the ortho position, or an aniline substituted in the para position by --NHP(O)(OCH.sub.3).sub.2 and bearing an --H in the ortho position, and the acid addition salts thereof, have antitumor activity.

Abstract: 3,5-Disubstituted-4'-(9-acridinylamino)-methane-sulfon-m-anisidide compounds represented by the general formula ##STR1## in which R.sup.2 and R.sup.3 represent, respectively, --CH.sub.3 and --CONHCH.sub.3, --CH.sub.3 and --CONHCH.sub.2 CONH.sub.2, --Cl and --CONHCH.sub.2 CONH.sub.2, --CONHCH.sub.3 and --CH.sub.3 ; and acid addition salts thereof have unexpectedly high antitumor activity in leukemic animals and low or no direct mutagenicity.

Abstract: The invention relates to an extremely thermophilic bacterium, THERMUS T-351, and a thermophilic protease, CALDOLYSIN, derived therefrom. The bacterium cells are Gram negative, non-sporulating rods. Its natural environment is a hot pool at 79.degree..+-.4.degree. C. The protease is stable at temperatures up to 75.degree. C. at a pH range of 4 to 12. It is most active at temperatures of 65.degree. C. to 85.degree. C. but retains at least some activity at lower temperatures.