Abstract: An electroerosian wire cutting machine with a stationary workpiece in which the machining heads with wire guides are operated by two cross-slide systems along two parallel planes on either side of the machining area with the workpiece placed and clamped on pillars that are stationary with respect to the main frame of the machine including a stand which supports the pillars and which is made up of vertical elements connected together to form a space open one face with a collector fitted in a hollow space set in the stand below the machining heads to collect used electrode wire and dielectric machining fluid.

Abstract: A wire cutting electroerosion machine with upper and lower machining heads on cross slide systems for taper machining. The upper and lower machining heads spray a dielectric liquid at the machining zone. A reservoir and filter elements are used to recycle the liquid and resupply the liquid to the machining zone. An enclosed enclosure means is used to reduce temperature variations during machining by enabling dissipation of the heat given off and to facilitate uniform temperature distribution throughout the equipment by achieving thermal equilibrium.

Abstract: Adducts which are obtainable by reacting cycloaliphatic or heterocycloaliphatic polyamines containing at least two primary groups with polyfunctional epoxides containing more than two epoxy groups per molecule in such amounts as to supply 10-100 equivalents of active hydrogen atoms bound to amino nitrogen per one epoxide equivalent, are suitable hardeners for epoxy adhesives, especially adhesives for metals and thermosetting plastics.

Abstract: Machine for cutting by electrical discharge machining includes an electrode wire tensioned between and running betwee two guide heads each of which is mounted on an arm, one at least of the arms passing through a hole in one of the walls of a tank. The tank can move with respect to the arm and contains a machining liquid. A sealing plate 1 masks the hole in the tank and is linked by at least one seal 4 to the arm 5 through the wall. The wall 2 of the tank through which the arm passes slides along this plate. To prevent the forces due to friction and pressure arising between the plate 1 and the wall 2 and between the seal 4 and the arm 5 and acting asymmetrically on the arm through the wall being transmitted to the arm 5 and causing its deflection, a sheath 6 is mounted between the seal 4 and the arm 5 and encloses this arm without coming into contact with it.

Abstract: Compounds of formula I or II ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen, alkyl, cyclohexyl, phenyl, benzyl or tolyl, or are a --CH.sub.2 --CHR.sup.3 --CH.sub.2 --S--CO--R.sup.4 radical, R.sup.3 is hydrogen or methyl, R.sup.4 is alkyl, cyclohexyl, phenyl, benzyl or tolyl, X is alkylene, --S--, --SO--, --SO.sub.2 -- or substituted alkylene, in which R.sup.5 and R.sup.6 are hydrogen or alkyl, and n is an integer from 1 to 10, can be used as latent hardeners for epoxy resins.The compositions containing epoxy resins and these hardeners are particularly suitable for use as single component adhesive formulations. The cured products have good hot water resistance.

Abstract: Compounds of formula I or II ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen, alkyl, cyclohexyl, phenyl, benzyl or tolyl, or are a --CH.sub.2 --CHR.sup.3 --CH.sub.2 --S--CO--R.sup.4 radical, R.sup.3 is hydrogen or methyl, R.varies.is alkyl, cyclohexyl, phenyl, benzyl or tolyl, X is alkylene, --S--, --SO--, --SO.sub.2 -- or substituted alkylene, in which R.sup.5 and R.sup.6 are hydrogen or alkyl, and n is an integer from 1 to 10, can be used as latent hardeners for epoxy resins.The compositions containing epoxy resins and these hardeners are particularly suitable for use as single component adhesive formulations. The cured products have good hot water resistance.

Abstract: One-component systems which are stable on storage and can be converted to crosslinked epoxide resins on heating and which contain a crystalline epoxide resin with, on average, more than one epoxide group per molecule and a melting point between 40.degree. and 150.degree. C., and, homogeneous distribution, a curing catalyst.

Abstract: One-component systems which are stable on storage and can be converted to crosslinked epoxide resins on heating and which contain a crystalline epoxide resin with, on average, more than one epoxide group per molecule and a melting point between 40.degree. and 150.degree. C., and, homogeneous distribution, a curing catalyst.

Abstract: A liquid or pasty thermosetting adhesive which can be pre-gelled, which is suitable for the bonding of moulded parts or for the sealing of folded seams, and which contains (a) a liquid epoxide resin having on average more than one epoxide group in the molecule, and (b) a latent epoxide curing agent insoluble in the epoxide resin, the adhesive being characterized in that it also contains (c) in an amount of 5 to 50 percent by weight relative to the epoxide resin, at least one halogen-free thermoplast in powder form, which is insoluble in the epoxide resin at room temperature, and which has a softening point of between 60.degree. and 160.degree. C., such as a polyethylene, a polypropylene or an ethylene/acrylic acid/acrylate terpolymer.

Abstract: Curable mixtures of polyepoxide compounds which contain an amine curing agent have longer curing times, and thus, in particular, good workability when used as adhesives, when N,N-dimethylethylenediamine derivatives or N,N-dimethyl-1,3-propylenediamine derivatives are used as the curing agents. The mechanical properties are also frequently improved.

Abstract: Concrete, especially for producing concrete blocks of high compressive strength, is formed from a hydraulic binder and an improved aggregate which consists of 0.1:1 to 1:0.1 parts of a sludge to comminuted slag. The sludge is a calcium-containing product of the scrubbing of the flue gases of a fossil-fuel boiler, preferably of a power plant, while the slag can be melting-chamber slag or ash obtained from the furnace. The composition may also contain sand or gravel. It is combined with water, to be cast into cement blocks of high compressive strength. Low proportions of the hydraulic binder are required with the improved aggregate.

Abstract: A storable, rapidly hardening epoxy resin adhesive consisting ofA. a polyglycidyl compound having a softening temperature between 40.degree. and 90.degree. C,b. a 2,5-di-(.omega.-aminoalkyl-1')-pyrazine of the formula ##STR1## wherein n is an integer from 3 to 6, and C. A COPOLYMER OF ETHYLENE, ACRYLIC ACID AND ACRYLATE HAVING A MELTING RANGE FROM 70.degree. TO 110.degree. C, said epoxy resin adhesive contains, per 1 equivalent of glycidyl groups, 0.5 to 1.5 equivalents of hydrogen atoms bonded to nitrogen of the 2,5-di(.omega.-aminoalkyl-1')-pyrazine and, per 100 parts by weight of the polyglycidyl compound, contains 3 to 20 parts by weight of the copolymer of ethylene, acrylic acid and acrylate.

Abstract: A storable, rapidly hardening epoxy resin adhesive consisting essentially ofA. a polyglycidyl compound having a softening temperature between 40.degree. and 90.degree. C,b. a salt of 1 mole of ethylenediamine, 1 mole of bisphenol A and 2 g of N,N-dimethyl-1,3-diaminopropane,C. an ABS graft polymer andD. a copolymer of ethylene, acrylic acid and acrylate having a melting range from 70.degree. to 110.degree. C,said adhesive comprises, per 1 equivalent of glycidyl groups, 0.5 to 1.5 equivalents of hydrogen atoms bonded to nitrogen of ethylenediamine and of N,N-dimethyl-1,3-diaminopropane, and per 100 parts of the polyglycidyl compound contains 3 to 30 parts by weight of the ABS graft polymer and 3 to 20 parts by weight of the copolymer of ethylene, acrylic acid and acrylate, and said adhesive is in the form of a fine heterogeneous powder.

Abstract: The disclosure relates to item or document signing apparatus for imprinting a legally acceptable signature and/or date, etc., upon individual items or documents fed on demand thereto at high speed from an input to an output hopper in a stop-start operation. An adjustably positionable item stop mechanism permits the printing of the data at selectable locations along the longer dimension of the item. Both date and signature imprinting means are simply efficiently and easily demountably removable and replaceable permitting alteration and/or rapid change of the imprinted data. Novel to be automatically maintained regardless of document thickness.

Abstract: Support and guiding means for a wire electrode in an electro-erosion machining apparatus comprising a V-block support and guide having two angularly disposed guiding surfaces substantially parallel to the wire electrode longitudinal axis mounted on a base automatically orientable radially about the wire longitudinal axis such that the axis of a linear cut through the workpiece or, alternatively, the tangent of a curvilinear cut substantially bisects the angle formed by the two angularly disposed guiding surfaces.