baber/WOPTO huggingface dataset:
Patent GB-884151-A (GB)
Title: New pyrazolo-pyrimidines substituted in the pyrazole nucleus, and process for their manufacture
IPC: A61K31/00
Filed: 1958-12-05
Abstract: The invention comprises compounds of the formula <FORM:0884151/IV (b)/1> or <FORM:0884151/IV (b)/2> and acid addition salts thereof, wherein R2 is a saturated hydrocarbon radical of up to 6 carbon atoms, e.g. alkyl and R3 is an amino group optionally substituted by one or two aliphatic radicals of 1-6 carbon atoms or a heterocyclic amino group.  The compounds are prepared by reacting a 2-R3-4-halo-5-cyano-pyrimidine with a hydrazine R2NH.NH2.  The products are used pharmaceutically, suitably in the form of acid addition salts (see Group VI). Examples describe the preparation of 1- or 2-isopropyl-6-dimethylamino-;1-methyl-6-morpholino- and 1- and 2-pentyl-(21)-6-dimethylamino-, pyrazolo-[3 : 4-d]-pyrimidine.  2 - substituted - 4 - halo - 5 - cyano - pyrimidines used as starting materials, e.g. 2-dimethylamino-4-chloro-5-cyano-pyrimidine and 2-morpholino-4-chloro-5-cyanopyrimidine are made by reacting an a -ethoxymethylene-a -cyanacetic ester with an S-alkyl-isothiourea to give 2-alkyl-mercapto (e.g. methylmercapto) - 4 - hydroxy - 5 - cyano - pyrimidine which is reacted with an amine such as dimethylamine or morpholine to give a 2-substituted-4-hydroxy-5-cyano-pyrimidine which is treated with phosphorus oxychloride. S-methylisothioureido-methylene cyanoacetic ester is obtained as the initial product of the condensation of a -ethoxymethylene-a -cyanoacetic ester and S-methylisothiourea.ALSO:Pharmaceutical preparations having tumour inhibiting, diuretic, coronary-dilating, central nervous system inhibiting and anti-rheumatic effects and acting as anti-metabolites of purine comprise pyrazolo-pyrimidine compounds of the formula <FORM:0884151/VI/1> or <FORM:0884151/VI/2> or acid addition salts thereof, wherein R2 is a saturated hydrocarbon radical of up to 6 carbon atoms, e.g. alkyl and R3 is an amino group optionally substituted by one or two aliphatic radicals of 1-6 carbon atoms or a heterocyclic amino group (see Group IV (b) in admixture or association with a pharmaceutical carrier.  The preparations suitably take the form of solutions, suspensions, emulsions, tablets or dragees and may contain auxiliary substances such as stabilizing, wetting or emulsifying agents.  Specified salts are hydrohalides, sulphates, phosphates, nitrates, perchlorates, formates, acetates, propionates, oxalates, succinates, glycollates, lactates, malates, tartrates, citrates, ascorbates, mono- and di-hydroxymaleates, pyruvates, phenylacetates, benzoates, p-aminobenzoates, anthranilates, p-hydroxybenzoates, salicylates, p - aminosalicylates, methane-, ethane -, ethylene -, hydroxyethane -, toluene-and naphthalene-sulphonates, sulphanilates and salts with methionine, lysine, tryptophane and arginine.
Patent GB-1287556-A (GB)
Title: Coin-testing apparatus
IPC: G07D5/02
Filed: 1970-08-14
Abstract: 1287556 Rim testing D TRENNER [trading as W H MUNZPRUFER WALTER HANKE] 14 Aug 1970 [16 Oct 1969 3 Dec 1969] 39327/70 Heading G4V  A coin 20 is tested by a two-armed sensing lever 24 and if it has edge beads and is of acceptable dimensions, pivots around a sensing pin 26 on one arm to roll down a shoot 39. An acceptable coin 20 inserted in a slot 13 drops until an edge bead contacts the sensing pin 26 to pivot in a first direction the sensing lever 24 about an axis 23. The opposing edge of the coin 20 then contacts a ramp 30 on the second arm of the lever 24, to pivot the lever in the opposite direction and trap the coin 20 between the sensing pin 26 and a wall of the shoot 39. The coin 20 pivots around the sensing pin 26 until its edge moves away from the ramp 30, whereon the lever 24 again pivots in the first direction to free the coin 20 into the "accept" shoot 39. Rimless and too-thin coins will not pivot about the sensing pin 26, but will drop vertically into a reject shoot 100; too-thick coins will jam against the lever 24 for release by a knob (not further disclosed). The movement of lever 24 is limited by a stop 33; the sensing pin 26 and ramp 30 project through apertures into the shoot 39. In a second embodiment (Fig. 4, not reproduced) coins roll down a shoot (43) that alters its inclination adjacent the sensing lever (40). A third embodiment (Fig. 5, not reproduced) employs an inclined shoot having a projection (47) adjacent the sensing lever (40).
Patent GB-964332-A (GB)
Title: Process for the manufacture of soluble chlorination products of homo- or co-polymersof 1-olefines
IPC: C08F8/20
Filed: 1960-11-16
Abstract: Homopolymers of a 1-olefin containing 3 to 6 carbon atoms, copolymers of at least two olefins containing 3 to 6 carbon atoms and copolymers of at most 95 weight percent of ethylene and at least 5 weight per cent of at least one 1-olefin containing 3 to 6 carbon atoms, which polymers have been prepared by low pressure processes, are chlorinated at 20 to 150 DEG C. and at least during a part of the chlorination in the presence of a mixture of water and a halogenated hydrocarbon that is either inert or may be further chlorinated under the reaction conditions. Chlorination may be begun in the presence of water and the halogenated hydrocarbon subsequently added, and may be begun at a lower temperature and terminated at a higher temperature. The water may contain electrolytes, e.g. hydrogen chloride, phosphoric acid, calcium chloride or sodium chloride.  Specified halogenated hydrocarbons are carbon tetrachloride, tetrachlorethane, tetrachlorodifluoroethane, methylene chloride, chloroform and trichlorethylene; and the chlorination may be effected in the presence of catalysts, e.g. hydrogen, benzoyl and lauroyl peroxides, azo diisobutyronitrile, ultra-violet light and irradiation. Specified polymers are polypropylene and copolymers of propylene with ethylene, butene-1 or 2-methylpentene-1. The chlorinated products may be dissolved in solvents, e.g. carbon tetrachloride, methylene chloride, trichlorethylene, benzene, toluene, xylene, butyl acetate, cyclohexanone and methyl ethyl ketone; and compounded with stabilizers, e.g. epoxy resins and dibutyl tin dilaurate; and plasticizers, e.g. dialkyl phthalates, tricresyl phosphate, cresyl paraffin sulphonates and chlorinated paraffins; to give coating and impregnating compositions and adhesives.  In examples (1) polypropylene is chlorinated in the presence of water and carbon tetrachloride, and the product mixed with (a) titanium dioxide, tricresyl phosphate and toluene and (b) titanium dioxide, dibutyl phthalate and chlorinated paraffins; and the chlorination in water and carbon tetrachloride of (2) polypropylene, (3) polybutene and (4) an ethylene-butene copolymer. Specification 889,108 is referred to.
Patent GB-851480-A (GB)
Title: Improvements in or relating to electric clocks
IPC: G04C3/06
Filed: 1956-12-28
Abstract: 851,480. Electric clocks. OBERGFELL, R., and OBERGFELL, H., [trading as KIENINGER & OBERGFELL]. Dec. 28, 1956 [Dec. 28, 1955; April 13, 1956; July 2, 1956], No. 39515/56. Class 139 An electric clock comprises an oscillating member driven by interaction between a magnetic member and a motor coil, a semi-conductor device, e.g. a transistor, the output of which is fed to the motor coil, a generator coil in which impulses are generated by relative motion between the generator coil and the magnetic member, and a resistor connected in parallel with the motor coil and is characterised in that the generator coil, the motor coil, the value of said resistor and the transistor are such that the output characteristic of the transistor (collector current plotted against battery voltage) includes a comparatively flat portion on which the operating point is located. The resistor may be of the negative temperature coefficient type or an additional such resistor may be provided. In the first example, Fig. 2, the oscillating member is a balance 7 carrying a bar magnet 5 and the generator and motor coils 2 and 3 are shaped so that the air gap between them and the magnet is substantially constant. In another example, Fig. 5, the mechanical oscillator is a pendulum 15 suspended from a bi-metallic strip 19. In a modification the pendulum is supported in the usual manner but the support is acted on by a bi-metallic strip. It is suggested that temperature compensation may be effected by an aneroid cylinder.
Patent GB-911387-A (GB)
Title: Process for the production of alkali metal boron tetraalkyls
IPC: C07F5/02
Filed: 1960-11-17
Abstract: Complex alkali metal boron tetraalkyl compounds are made by heating complex alkali metal boron alkyl hydride compounds with olefines. Preferred starting materials are complexes of the formula Me[BR1R2R3H], wherein Me is an alkali metal, preferably lithium, sodium or potassium, R1 and R2, which may be the same or different, represent alkyl radicals which may be joined to form a ring, and R3 is an alkyl radical or a radical of the formula [R4BR5R6H]Me wherein R4 is a difunctional saturated aliphatic hydrocarbon radical, R5 and R6, which may be the same or different represent alkyl radicals which may also be closed to form a ring; or complexes of sodium hydride and a boron trialkyl, a borocycloalkane or an alkylene diborocycloalkane. Suitable olefines are alpha olefines and 1,1-dialkyl ethylenes, preferably olefines containing up to 20 carbon atoms, particularly those containing 2 to 12 carbon atoms. Temperatures in excess of 120 DEG C. are preferred, the best results being obtained between 160 DEG and 200 DEG C.  The process may be effected at atmospheric pressure or elevated pressure, such as 20 to 50 atmospheres when ethylene is used.  A solvent such as a saturated aliphatic or cycloaliphatic hydrocarbon may be used, and the reaction is preferably effected in an inert atmosphere such as argon or nitrogen.  The complex alkali metal boron alkyl hydride may be formed initially from an alkali metal hydride and boron alkyl and then reacted with the olefine, or the complex boron compound may be formed in situ, by reacting together the alkali metal boron hydride, the boron alkyl and the olefine.  The presence of a small excess, e.g. 0.1 to 0.2 mols, of the free boron alkyl compound may be desirable.  The products are suitable as alkylating agents or reducing agents.  Detailed examples are given.
Patent GB-948467-A (GB)
Title: Electromagnetic brake control circuit
Inventor: PRESCOTT EDWARD HORACE ALBERT
IPC: H03K17/64
Filed: 1960-11-17
Abstract: 948,467. Protecting transistor switching circuits. PYE Ltd. Nov. 15, 1961 [Nov. 17, 1960], No. 39504/60. Heading H3T. [Also in Division F2] In a circuit for controlling the coil L1 of an electromagnetic brake in order to give a controlled degree of braking, the coil L1 is connected in series with a transistor TR1, the conductance of which is controlled by a control signal applied between terminals A and B so as to give a braking effect proportional to the signal. The voltage supply is derived from a bridge rectifier circuit BR and a condenser C1 and resistors R1, R2 and R3 constitute a bias network which bottoms the transistor TR1 when no control signal is applied to it so that maximum current flows through the transistor TR1 to the brake coil L1 to apply the brake. Alternatively, in an arrangement in which the brake is on when the coil is de-energized, the bias network is disposed to cut off transistor TR1 in the absence of a control signal. Diodes D1, D2 serve to protect transistor TR1 from back E.M.F.'s developed across brake coil L1 when rapid changes in control signal occur. The sensitivity of the circuit can be increased by the provision of a further transistor in cascade with the first transistor TR1, Fig. 2 (not shown).
Patent GB-1196558-A (GB)
Title: Method and Apparatus for Winding Up Thin Delicate Webs of Material
IPC: B65H18/10
Filed: 1968-08-20
Abstract: 1,196,558. Web reels. KALLE A.G. 20 Aug., 1968 [22 Aug., 1967], No. 39717/68. Heading B8R. [Also in Division F2] A reel on which a thin web 5 is wound has resilient or elastic buffer elements 4 disposed on its surface and extending parallel to its axis. The buffer elements may consist of elastic material provided with a metal or plastics cap 7, or of sponge rubber or air-tight inflatable bags of oval or round section or plate springs. The web passes around a roller 6 rotatably mounted at the end of a pivoted lever 8 and the weight of the roller smooths out uneven tension in the web. The vertical distance between the roller 6 and the wound web 2 is maintained constant by manually or automatically moving the pivot 9 of the lever 8 or by rotating the frame 13 supporting the reel.
Patent GB-1149976-A (GB)
Title: Apparatus for the precise amplification of low-pressure measurement ranges
Inventor: SCHEFFLER PETER
IPC: F15C4/00
Filed: 1966-09-06
Abstract: 1,149,976. Fluid-pressure servomotor systems. JUNKALOR DESSAU, VEB. Sept.6, 1966, No.39746/66. Heading G3P. A fluid-pressure amplifier includes a strapmounted lever 7 urged by spring 16 into point contact with the head of a bellows 2 which receives the input signal. The bellows is adjusted axially by means of nuts 4. A loose ball 8 is supported on the lever and co-operates with a bleed orifice in a member 13. The bleed orifice is supplied via restriction 12, and the member 13 is adjusted along a slot 14 parallel to the lever to vary the amplification.
Patent GB-1070002-A (GB)
Title: Improvements in and relating to the production of ducting
Inventor: EVANS REGINALD WARNFORD
IPC: F16L9/12
Filed: 1962-10-20
Abstract: 1,070,002. Moulding ducting pipes. GOOLE PLASTIC HOMES Ltd. Jan. 20, 1964 [Oct. 20, 1962], No. 39774/62. Heading B5A. [Also in Divisions E1 and F2] A continuous length of pipe is cast between an outer former and an inflated core, liquid under pressure replacing the core when it is removed to cast a further section. The core may be covered by a film of regenerated cellulose which forms the inner lining of the pipe or the core may be covered with a film forming liquid, e.g. a polythene composition which provides the lining. In one modification the lining and the collapsible tube providing the outer former are attached at one end, to an annular plate and the outer former surrounded by a metal tube. The pipe is cast of epoxy resin and sea shells or sand or earth. The water under pressure helps to force the core out.
Patent GB-1415524-A (GB)
Title: Soil stabilisation
IPC: E02D3/11
Filed: 1972-08-25
Abstract: 1415524 Stabilising soil HOLLANDSCHE WEGENBOUW ZANEN NV and OLSTER ASPHALTFABRIEK BV 26 Nov 1973 [25 Aug 1972] 39835/72 Heading E1F Soil is stabilised by heating it and mixing the hot soil with a lesser amount of particulate or comminuted plastics material, the temperature being sufficient to soften at least part of the plastics material. The mixture is then allowed to cool, and may be compacted. About 2-30% of material, which may be a thermoplastics material such as polyethylene, P.V.C., polystyrene, polypropylene, polyesters, polyacrylates, polyamides or nylon, is used, and a hydrocarbon product such as bitumen, tar or asphalt may be mixed with the heated soil. The process may be carried out, continuously or batchwise, in a vehicle comprising a container for plastics material, means for removing soil from the ground, and means for heating it and mixing it with the material.
Patent GB-1368488-A (GB)
Title: Thermoplastic scrap recovery
IPC: B29B17/00
Filed: 1971-08-26
Abstract: 1368488 Fibre feeding and stapling EASTMAN KODAK CO 26 Aug 1971 [27 Aug 1970] 40110/71 Headings D1F and D1N [Also in Division B5] Waste continuous filament polyethylene terephthalate, or poly(1,4-cyclohexylene dimethylene terepthalate), which may contain libricant, is recovered in the form of granules by pasage of staple fibre into which it has been converted through a heated extruder (see Divisions B4-5). The continuous filament is intermittently compressed into a bale which is cut transversely into slices which are then cut into staple fibre 44, e.g. a random length staple of about three inches, by a sequential rotary cutter pair, and conveyed by a belt 36 to a storage bin 20, from which the fibre is continuously discharged onto a belt 50 feeding the extruder. The bin 20 comprises a blender in which the staple fibre 44 is received by an apron conveyor 38 having slats which are unspiked and which discharges to an apron conveyor 40 having spiked slats 43 spaced about five inches apart. Overfeeding of staple fibre by the conveyor may be prevented by a comb doffer 47, and staple fibre is removed from the conveyor 40 onto the belt 50 by another similar comb doffer 48, which oscillates for a slotted member 49 thereof to clear the spikes 42. The speed of the conveyors 38, 40 may be regulated manually, or in response from an ammeter indicating the extrusion load on the extruder. The conveyor 50 comprises flexible corrugated side walls, and its passage is beneath a metal detector which acts to stop the conveyor 50.
Patent GB-1444664-A (GB)
Title: Process and apparatus for producing polyolefin pulp
IPC: D21H13/14
Filed: 1974-09-16
Abstract: 1444664 Polymer fibres SUMITOMO CHEMICAL CO Ltd 16 Sept 1974 [14 Sept 1973 40307/74 Heading B5B Fibres of polyolefin (including polystyrene) are formed by ejecting a solution of the polymer into a gaseous region at lower pressure to flash off most of the solvent to form a fibrous structure and then passing the fibrous structure into an aqueous medium maintained at a temperature between the boiling point of the solvent (or any azeotropic mixture it forms with the water) and the melting point of the polymer, and disintegrating in the aqueous medium to form a pulp. The gaseous region may also be maintained in the same temperature range. The polymer may be polyethylene, polypropylene, butene-1 or styrene. The pulped fibres are 1 to 10 mm. long, and 5 to 10 Á in diameter. The temperature of the aqueous medium may be maintained by adding hot water continuously whilst withdrawing pulp, or by a heating jacket. The solution may be at a pressure of 5 atm., and the gaseous region at 1 to 2 atm. and 150‹ to 250‹ C. The aqueous medium may contain a surfactant. The solution may be ejected with an inert gas. The rotary blades may be set at 10 to 80 degrees to the axis of rotation, or may be vertical. The pulp may be filtered and the fibres mixed with an equal quantity of conventional material and formed into paper.
Patent GB-1268084-A (GB)
Title: Apparatus for measuring tyre pressures
Inventor: RAFFAELLI GUILIO
IPC: G01L17/00
Filed: 1969-08-13
Abstract: 1,268,084. Measuring tyre pressure. G. RAFFAELLI. Aug. 13, 1969 [Aug. 20, 1968], No.40385/69. Heading G1L. In apparatus for measuring the inflation pressure in a tyre the air is supplied from a cap c, pressed on to a tyre valve, through a hose 117 to a cylinder 104 to move a piston 105 and through a cable 106, arm 107, counterbalanced by a weight 108, bevel gears 103' and shaft 103, to rotate a graduated cylindrical scale 101 and through a galvanometer 109 having two current coils, one coil of which is connected to a pick-up responsive to ambient air temperature and the other responsive to the tyre air-pressure, rotates a pointer 102 to indicate the pressure on the scale 101 as if the air were at ambient temperature.
Patent GB-837157-A (GB)
Title: Improvements in or relating to cyclones
Inventor: GLOVER SIDNEY THOMAS
IPC: B04C5/14
Filed: 1957-12-31
Abstract: 837,157. Centrifugal separators. IMPERIAL CHEMICAL INDUSTRIES Ltd July 25, 1958 [Dec. 31, 1957], No. 40400/57. Class 23 A hydrocyclone has a flexible tube 6 attached to the underflow outlet 5. The tube is normally bent to form a U but it may be straightened to clear a blockage in the underflow. The overflow exit 4 is level with the underflow outlet. Dimensions of the apparatus are given in the Specification.
Patent GB-1212674-A (GB)
Title: Hydrostatic power transmission
Inventor: KEMPSON BERTRAM CARL
IPC: F16H61/46
Filed: 1966-09-09
Abstract: 1,212,674. Fluid-pressure servomotor systems. DOWTY HYDRAULIC UNITS Ltd. Dec.4, 1967 [Sept. 9, 1966], No.40420/66. Heading G3P. [Also in Division F2] A hydrostatic transmission for a cable winding drum comprises a fixed or variable capacity hydraulic motor 2 supplied by a pump 1 the capacity of which is adjusted by a servomotor, and the pressure in the transmission supply line 3 (for forward drive) acts, when it reaches a predetermined value, to reduce the pump displacement or even give the pump a reverse displacement in order to maintain a constant tension in the cable. As shown in Fig.1 a servopiston 7 is spring- biased to a central position giving zero pump displacement and is supplied with servo pressure by an input driven pump 12. Pump 12 supplies liquid at a pressure determined by a valve 15 to one servo chamber 11 through a restriction 18 and to the other chamber 9 through a restriction 19 and a valve 21. A rotary control valve 23 is connected to the chambers and serves to selectively provide a restricted connection between either servo chamber and a line 16 which supplies make-up liquid to the low-pressure transmission line. For forward displacement, valve 23 is manually turned in the direction F to connect chamber 11 to the line 16 and thus reduce the pressure in this chamber. The valve 21 is subject to the pressure in the transmission line 3, which is the flow line for forward drive, and below a predetermined pressure interconnects ports 32, 33 which are respectively connected to the restriction 19 and to the servo chamber 9. Above the predetermined pressure the chamber port 33 is connected to an exhaust port 34 so that the pump displacement control is shifted towards its reverse displacement position to maintain the predetermined pressure in the transmission line 3. In a modification the rotary control valve 23 is replaced by two selectively operable throttle valves shown in Fig.3 of Specification 1, 212, 673. In the embodiment of Fig. 2 a differential servopiston 42 controls the pump displacement and has a chamber 47 connected to the output of an input driven pump 48, and a chamber 46 connected, through a valve 67, to a port 63 of a control valve 59. Rotation of a handle 53 in a direction F or R to give forward or reverse shifts the valve 59 to connect port 63 with a port 62 connected to the servo chamber 47 or to an exhaust port 64 so that the piston is shifted downwardly or upwardly to give forward or reverse drive. The transmission line 3 is connected to a port 69 of the valve 67 and above a predetermined pressure, the servo chamber 46 is cut off from the control port 63 and opened to an exhaust port 78 so that the piston 42 is shifted upwardly towards its reverse displacement position.
Patent GB-1016615-A (GB)
Title: A heat curable composition
IPC: C08G75/08
Filed: 1963-10-14
Abstract: A heat curable composition comprises (1) an epoxy- or epithio-alkylester of 3,4-dihydro-1,2-pyran-2-carboxylic acid and (2) and amine containing at least two N-H bonds.  Specified esters are glycidyl 3,4-dihydro-1,2-pyran-2-carboxylate and 2,3 - epithiopropyl - 3,4 - dihydro - 1,2 - pyran - 2 carboxylate. Preferred amines are aromatic, aliphatic or cyclo-aliphatic. The two components are mixed, either with or without solvent. Suitable concentrations of amine are 0.8 to 1.5 equivalents per equivalent of heterocyclic compound. Suitable additives are fillers, dyes, plasticizers, stabilizers, vinyl resins, pitches, distillate oils and alkyd resins. Resinification is achieved by heating at 90 to 250 DEG  C., optionally in the presence of accelerators or catalysts.  The examples describe the preparation of cured compositions from glycidyl-3,4-dihydro-1,2-pyran-2-carboxylate and (1) meta-phenylene diamine; (3) triethylenetetramine, (4) 1,3-diaminocyclohexane; (5) 1,3-diamino-(methyl)cyclohexane; (6) di-(hexamethylene)triamine; (7) meta - xylylene diamine; and (2) from 2,3-epithio-propyl-3,4-dihydro - 2 - pyran - 2 - carboxylate and metaphenylene diamene. Uses:-laminates, adhesives, mouldings, surface coatings.