baber/WOPTO huggingface dataset:
Patent GB-340407-A (GB)
Title: Improvements in dynamo electric machines
IPC: H02K9/06
Filed: 1929-12-20
Abstract: 340,407. Dynamo-electric machines. JUHLIN, G. A., Redscar, Moss Lane, Timperley, Cheshire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London. Dec. 20, 1929, No. 39070. [Class 35.] Armatures and field magnets, cooling.-A dynamoelectric machine has longitudinal passages in the rotor spider communicating in the centre through a radial opening with further longitudinal passages in the rotor core so that external air enters the machine at each end of the spider, passes at the centre of the rotor to the longitudinal passages and emerges at both ends of the rotor. As shown the shaft 1. is provided with channels 10 co-operating with channels 11 in the spider to form air passages 12. The passages 12 communicate at the centre by means of radial ducts 13 with longitudinal passages 14 in the rotor core 3. These passages are bounded on one side by the inner surface of the rotor core which may be serrated to increase the cooling. The rotor carries a fan 17 at each end and the air after leaving the rotor is directed as shown by the arrows through longitudinal ducts or channels 18 in the stator core 6 whence it passes through radial holes 19 in the centre into a surrounding jacket space 9 formed with openings 20. Baffles may be located in the spaces 23 to direct air over the stator end windings and a radial space 24 may be provided in the centre of the stator core to allow the air which flows along the air gap from the ends of the machine to pass out radially.
Patent GB-1356992-A (GB)
Title: Process for recovering methyl chloride and methylene chloride
IPC: C07C17/389
Filed: 1971-08-20
Abstract: 1356992 Oxychlorination of methane; recovery of methyl chloride and methylene chloride STAUFFER CHEMICAL CO 20 Aug 1971 [31 Aug 1970] 39133/71 Heading C2C CH 3 Gl and CH 2 Cl 2 , possibly together with minor amounts of CHCl 3  and CCl 4 , are recovered from a cooled methane chlorination reactor effluent containing substantial amounts of relatively non-condensable gases by passing the latter to an adsorption stage to adsorb the said chlorohydrocarbons, then stripping the same from the adsorption stage using heated methane feed for the chlorination reactor and finally cooling the absorption stage, the process being effected at superatmospheric pressure. The recovery is preferably effected using two, three or four adsorption stages in a cyclic manner; the lean reactor effluent from each adsorption stage which is in its adsorption phase being used to cool that adsorption stage which is in its cooling phase. The cooled methane chlorination reactor effluent is preferably obtained from the oxychlorination of methane at an elevated temperature with gaseous HCl or Cl 2  in the presence of a catalyst and a free oxygen containing gas and subsequent cooling-of the effluent. The adsorption and cooling phases are preferably carried out at - 50 to +20 C. and the stripping phase preferably at 100 to 400 C. Specified adsorbents are activated carbon, zeolitic molecular sieves, silica gel and activated alumina.
Patent GB-1309829-A (GB)
Title: Moulding compositions based on bitumen and an olefin polymer
IPC: C08L23/02
Filed: 1970-08-14
Abstract: 1309829 Bituminous/polyolefine composition BADISCHE ANILIN- & SODA-FABRIK AG 14 Aug 1970 [16 Aug 1969] 39194/70 Headings C3N and C3P A moulding composition comprises (a) 10-90 parts by weight of bitumen, (b) 90-10 parts by weight of an olefin polymer; and (c) 1-10 parts by weight of sulphur; the sum of (a), (b) and (c) amounting to 100 parts by weight. The amount of sulphur used is preferably 1-10% by weight, more preferably 3-6%, based on the total weight of components (a) and (b). The moulding compositions may be formed into shaped articles and the presence of the sulphur prevents such articles from sticking together when stored for a prolonged period under pressure. The sulphur may be present on the surface of the granules of the bitumen-olefin polymer mixture. The moulding composition may be prepared by mixing the components at temperatures of 100‹ to 200‹ C., preferably 120-160‹ C. Particularly suitable olefin polymers are homopolymers of ethylene, propylene, isobutylene and butene-1, copolymers of ethylene with butene-1, 1 or copolymers of ethylene with other copolymerizable ethylenically unsaturated compounds such as acrylic and methacrylic acid esters derived from C 1-8  alcohols, wherein the copolymer contains at least 50% by weight ethylene units, e.g. copolymer of 82% ethylene and 18% n-butyl acrylate. Mixtures of olefin polymers may be used and the use of a terpolymer of ethylene, an acrylic ester and acrylic acid is also envisaged. The weight ratio of ingredients (a) to (b) is preferably 2 : 3 to 3 : 2. The bitumen may be any natural or synthetic bitumen as well as asphalt and tar. A particular suitable bitumen has a penetration of 1-200 dmm. and a softening point of 140‹ to 40‹ C. The moulding composition may also contain 5-50% by weight, based on the total weight of (a) and (b), of one or more conventional fillers such as slate powder, limestone powder, gypsum, chalk, calcium silicate, talcum, asbestos, glass powder, rock wool, slag wool, aluminas, dolomite powder, stone powder, titanium dioxide, sawdust or ground cork. The moulding compositions may be processed into shaped articles such as sheets by the use of extruders, injection moulding machines and presses. The tensile strengths and elongations at break of these sheets are specified.
Patent GB-1483225-A (GB)
Title: Nozzle for dispensing polymer products
IPC: B05B1/00
Filed: 1974-09-09
Abstract: 1483225 Nozzles W R GRACE & CO 29 Aug 1975 [9 Sept 1974] 39204/74 Heading B2F A nozzle for dispensing polymer compositions, for example for dispensing small amounts of cold polyurethane foams in the manufacture of annular gaskets in container crown closures, comprises a nozzle body constructed in three sections 1, 2 and 3 and having a bnduit 10 through which the material to be dispensed passes, an elastic tube 4 lining said conduit and a passage 11 connected to a source of pressurised fluid and communicating with a recess 12 around the tube such that when fluid is admitted into the recess the walls of the elastic tube are forced inwardly thereby forming a seal. The tube is surrounded 'by a perforated cage 9 which prevents the walls of the tube from being distended outwardly when material passes through the nozzle. The tube 4 may be made of natural or synthetic rubber such as nitrile rubber. The quantity of polymer composition delivered in each dispensing cycle can be controlled by varying the interval between release of the elastic tube from an initially inwardly deformed condition and the next instant of inward deformation at the end of the dispensing cycle. The seal formed by the elastic tube prevents material from dribbling from the nozzle between dispensing cycles.
Patent GB-1366047-A (GB)
Title: Nonflammable compositions resistor
IPC: H01B1/24
Filed: 1972-08-23
Abstract: 1366047 Resistors MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 23 Aug 1972 [23 Aug 1971 6 Dec 1971 23 Dec 1971 27 Dec 1971] 39287/72 Heading HIS A non-inflammable composition resistor comprises a finely divided conducting powder, silica powder, and an additive powder dispersed in a resin. The additive powder has a transformation temperature in the range Tg‹ C. to (Tg + 200)‹ C., where Tg‹ C. is the glass transition temperature of the resin, i.e. the temperature above which the resin attains a glassy state and the transformation temperature is defined as the temperature below which an increase in the temperature causes a small decrease (caused by vaporization, decomposition or sublimation) in the weight of the powder but above which an increase in the temperature causes a great decrease in the weight. Materials and process for making.-The conducting powder may be carbon black, graphite, metal, metal alloys or mixtures thereof. The additive powder, preferably high purity, can be selected from the group consisting of carbocyclic and heterocyclic compounds, e.g. anthracene, anthraquinone, 1 - nitroanthraquinone, terephthalic acid, p-terphenyl, phenolphthalein, carbazole, perchloropentacyclodecane, or copper phthalocyanine. A thermosetting resin, e.g. phenol, urea, melamine or epoxy resins, or mixtures, may be used. Terminal members may be made of copper-chromium alloy, copper-clad iron, brass, iron or bronze, and may be solder coated. A mixture of conducting powder, silica powder and an additive powder in resin is well mixed at 50‹ to 100‹ C., e.g. by a hot rolling method, cooled and crushed into granules. A further mixture of silica powder and resin is also prepared to form the material for an outer sleeve. A resistor body with outer sleeve can then be made by extrusion or pressing after which the terminals are applied by pressing and the resistor stabilized by heating at 130‹ to 170‹ C. from 5 to 78 hours. Numerous examples of different compositions and tests carried out on them are described. Principle of operation.-It is stated that the resistance of conventional composition resistors when passing an overcurrent decreases because of joule heating, which further increases the current and therefore the heating until the resistor burns out. If the resistor includes an additive powder and is heated the powder emits a gas, which because of the bulk of resin around the powder and the conducting particles attains a very high vapour pressure. If the temperature of the resistor body is then Tg or greater the resin loses its resilience and the conducting particles become widely separated under the high pressure of the gas. This leads to an irreversible increase in the resistance of some 5 to 100 times. The current through the resistor therefore decreases and the resistor does not burn.
Patent GB-1462597-A (GB)
Title: Process for the preparation of polyurethanes
IPC: C08L67/00
Filed: 1975-09-25
Abstract: 1462597 Polyurethanes BAYER AG 25 Sept 1975 [28 Sept 1974] 39312/75 Heading C3R Polyurethanes which contain sulphonate groups are prepared by reacting an organic polyisocyanate with a diol preferably having a m.p. of below 120‹ C. and which has the formula wherein A and B, which may be the same or different, each represents a C 1-6  divalent aliphatic hydrocarbon radical, R represents a hydrogen atom, a C 1-4  aliphatic hydrocarbon radical or a phenyl radical, X<SP>(+)</SP> represents an alkali metal cation or an ammonium ion which may be substituted, n and m each represents a number from 0 to 30, o and p are 0 or 1 and q is 0, 1 or 2, in amounts such that the polyurethane has an SO 3 <SP>(-)</SP> group content of 0À1 to 6% by weight. Optionally, at least one other active hydrogen containing compound may be included amongst the reactants. It is particularly preferred to prepare the polyurethanes with simultaneous conversion into aqueous dispersions. A suitable reaction procedure is to react the polyisocyanate, sulphonated diol and optionally an additional polyhydroxyl compound in any order to form a prepolymer, followed by chain extension of this prepolymer in water to form the preferred aqueous dispersion. The aqueous dispersion is particularly suitable for coating textile materials.
Patent GB-1113143-A (GB)
Title: Digital data transmission system for increasing information rate without increase of bandwidth
IPC: H04L27/00
Filed: 1966-09-02
Abstract: 1,113,143. Data transmission systems. BENDIX CORPORATION. 2 Sept., 1966 [14 Sept., 1965], No. 39359/66. Heading H4P. Binary data is converted to a multi-level signal for transmission, each 1 bit causing a change in level, and the receiver includes means for recovering the binary data. At the transmitter the binary data feeds a counter which counts each one bit and has a capacity equal to the number of levels in the transmitted signal. The counter reverses when it is full. Its parallel output passes to summing resistors which give the multi-level signal. This signal feeds a ring modulator, so that the transmitted wave is amplitude modulated to represent the absolute signal level and phase modulated to represent the signal polarity. At the receiver the multilevel signal is recovered by synchronous demodulation. The multi-level signal triggers the appropriate ones of a number of threshold units, each level change causing a change in the number of units triggered. Each change sets a bi-stable circuit to its 1 state, the circuit being reset half a bit period later and read out to the receiver output. The resetting pulses are derived from a retroactively controlled oscillator whose phase is compared with the level transition instants found at the threshold units.
Patent GB-394218-A (GB)
Abstract: 394,218. Interrupters. BOSCH AKT.- GES., R., 4, Militõrstrasse, Stuttgart, Germany. Oct. 28, 1932, No. 30234. Convention date, Jan. 20. [Class 38 (v).] A multiple interrupter for engines with double ignition comprises a rotating cam, one or more interrupters fixedly mounted in relation to the cam, and one or more interrupters adjustably mounted by rocking about a point o on a baseplate, the pivotal point o being situated on the same side of the cam as the interrupter lever d. In the form shown there are two pairs of interrupters A1, A2 and B1, B2, mounted on a plate a. The interrupters A1, B1, which are adjustable, are carried on plates b pivoted to the plate a at o, and are secured in the desired position by screws m passing through slots n in the plates b. Adjustment is effected by loosening the screws m and rotating an eccentric screw p.. The fixed interrupters are carried by plates b in which the pivot pin and slots are omitted.
Patent GB-941115-A (GB)
Title: Improvements in frequency to voltage converters
IPC: H03K9/06
Filed: 1959-11-23
Abstract: 941,115. Frequency detectors. G. S. BAHRS, D. W. MARTIN, and M. M. Mc- WHORTER. Nov. 23, 1959 [Dec. 3, 1958], No. 39714/59. Heading H3A. A frequency is measured by applying voltage excursions from it, between limits determined by a pair of switches 51, 52, to one side of a series capacitor 68, the other side being kept at near constant potential by feeding a low shunt impedance 69, and the output from this capacitor being amplified and directed by rectifiers 77, 78 to a smoothing capacitor 80 and output terminal 81. As shown, the input is applied to a transistor limiter 42 whose rectangular output is applied to a pair of transistors 51, 52 of opposite type connected in series (and operating in an inverted manner) to give a push-pull switching output to capacitor 68 between the supply voltage limits -V, 0 when 51, 52 alternately are fully conductive and cut off respectively, rectifiers 64, 66 preventing the limits being exceeded. The output through 68 is applied to the low impedance 69 and common base transistor 67 with high output impedance feeding the shunt and series rectifiers 77, 78 so that the output 81 is isolated from the capacitor 68.
Patent GB-973696-A (GB)
Title: Improvements in pressure vessels
IPC: F17C1/16
Filed: 1960-11-18
Abstract: 973,696. Rocket motor casings. MINNESOTA MINING & MANUFACTURING CO. Nov. 18, 1960 [Nov. 20, 1959], No. 39751/60. Heading F3A. A pressure vessel, Fig. 3, comprises segmental strips 13a, 13b, 13c retained in edge to edge abutment to form shell 13, the strips at least at one end curving inwardly to form an end wall 6b and being formed substantially entirely of resin bonded filaments extending longitudinally from one end of the shell to the other. In the embodiment of Fig. 1, a rocket motor casing 5 comprises a shell 13, an inner shell 12 of circumferentially oriented resinbonded filaments, and an outer shell 14 also of circumferentially oriented filaments. An extension of shell 13 forms boss 7 and an annular flange 15, the thickness of the shell increasing as the filaments converge to form orifice 8. A liner 19, which may be of nylon fabric impregnated with a flexible epoxy resin, is bonded to the inner surface of wall 6, a collar of circumferentially oriented filaments is formed around boss 7 and a moulded ring 18 abuts an inturned flange 17, which flange is a further extension of shell 13. A cover-plate 9 with exhaust tubes 10 is secured to the casing 5 by bolts 11. To manufacture the casing, fibre glass, for example, impregnated with an uncured resin, is wound on a suitable mandrel. The resin is cured to form shell 12, to which is added the liner 19 and ring 18, these components then being overlaid by the segmental portions of shell 13, a low temperature liquid amine curing epoxy being used as curing agent. Finally, shell 14 is wound on, its thickness increasing towards the cover-plate 9, and also collar 16, both being cured to form an integrated casing. The winding of shell 14 may be continued to merge with collar 16 and shell 12 may be continued inside wall 6, lining 19. being dispensed with. A second embodiment comprises a symmetrical casing having a boss 7 and orifice 8 at each end. Also more than one shell 13 may be used, each being sandwiched between shells of circumferentially oriented filaments.
Patent GB-924593-A (GB)
Title: Improvements in or relating to circuit arrangements for flux-sensitive magnetic pick-up devices
Inventor: RITZENTHALER HERBERT
IPC: G11B5/335
Filed: 1961-11-07
Abstract: 924,593. Flux-sensitive heads; local circuits for. WOLFGANG ASSMANN G.m.b.H. Nov. 7, 1961, No. 39824/61. Class 40 (2). The core-members 1 are joined by a pair of yoke members 1a, 1b carrying an excitation winding 2 fed with an alternating current in the range 10 to 400 kc/s., an output winding 3, enveloping both yoke members 1a, 1b being tuned to twice the excitation frequency by a capacitor 5, such winding 3 being substantially the sole inductance comprising the tuned circuit, variable damping means 4 adjusting the feedback to provide optimal output of signal and of the tuned frequency. Adjustment may also be provided by variation of the excitation frequency or its amplitude to vary the effective inductance of the winding 3. In Fig. 1, the shunt resistor 4 provides a sufficient range of adjustment ; in Fig. 2, where the initial damping is too great, a first preamplifier stage for the signal 12 is used additionally to provide feedback for the tuned frequency, the resistor 4 being adjusted to just prevent self-oscillation. The excess highfrequency output may be dissipated or used to modulate succeeding magnetic amplifiers.
Patent GB-337674-A (GB)
Title: Improvement in or relating to bowden mechanism
IPC: F16C1/14
Filed: 1929-12-31
Abstract: 337,674. Evans, F. W. Dec. 31, 1929. Brake mechanism.-The end of the inner cable b of a Bowden wire is coupled to the operated part g, which may as shown be the lever of an internal expanding cycle or motor-cycle brake by an intermediate quickly detachable part h. The cable end has attached to it, such as by soldering, a shackle c through which passes a pinned bolt d, and the part g carries a shackle f attached thereto by a pinned bolt e. The intermediate piece has an end slot h<2> engaging the bolt d, and passes through the. shackle f, its grooved end h<1> being thereafter hooked over the cable as shown.
Patent GB-332880-A (GB)
Title: Improvements in and relating to high tension submarine electric cables
IPC: H01B7/28
Filed: 1929-12-31
Abstract: 332,880. Felten & Guilleaume Carlswerk Akt.-Ges. March 16, 1929, [Convention date]. Armouring cables; insulating coverings for cables.-In a high-tension submarine cable insulated with oil-impregnated paper, the protecting sheathing is formed of rubber which has been rendered impermeable to water, a layer of oilimpermeable material being applied over the paper insulation. The sheathing may consist of rubber which has been freed of water-soluble and water-containing substances, and to which insoluble and non-hygroscopic filling materials are added. In a, modified construction, the waterimpermeable sheath is formed of a rubber which after it has been applied to the conductor has its surface impregnated with molten paraffin, in order to close the pores.
Patent GB-1285371-A (GB)
Title: Improvements in or relating to therapeutic methods using prostaglandins
IPC: A61K31/215
Filed: 1969-08-08
Abstract: 1285371 Contraceptive &c compositions UPJOHN CO 8 Aug 1969 [29 Aug 1968 12 Nov 1968] 39883/69 Heading A5B A pharmaceutical preparation for controlling the reproductive cycle in an ovulating female mammal consist of a member selected from the free acids, pharmaceutically acceptable salts, acylates wherein the acyl radical radical is that of a hydrocarbon carboxylic acid having 1 to 8 carbon atoms inclusive and carboxylate esters derived from a hydroxy compound having 1 to 8 carbon atoms of a compound represented by the formula: wherein X is -CH 2 CH 2 - or trans -CH=CH-, and both Y and Z are -CH 2 CH 2 -; X is trans -CH=CH-, Y is cis -CH=CH- and Z is -CH 2 CH 2 - or cis -CH=CH- m is 0, 1 or 2 and n is 2, 3, 4 or 5 and a pharmaceutical carrier. The compositions are suitable for systemic administration and designed to provide to said female from 0.01 mg to 20 mg/kilo of body weight of said female mammal. The compositions may also contain estrogenic substances such as estriol, estrone, estradiol, estradiol cyclopentylpropionate, ethinyl estradiol, ethinyl estradiol 3-methyl ester, piperazine estrane sulphate, benzestrol, dienestrol, diethylstilbestrol dipropionate, hexestrol and methalenstril.
Patent GB-1241832-A (GB)
Title: Cosmetic preparations
Inventor: PATEL CHAITANYA UMEDBHAI
IPC: A61K/
Filed: 1968-08-23
Abstract: 1,241,832. Hair dyeing compositions. BEECHAM GROUP Ltd. 22 Aug., 1969 [23 Aug., 1968], No. 40321/68. Heading D1B. Compositions for dyeing hair comprise an aqueous medium at pH 8 or below including at least one dye selected from acid dyes, premetallised acid dyes, direct dyes, disperse dyes, a salt which is a water-soluble electrolyte and is inorganic, an inorganic thickening agent, a detergent and a buffering agent. The detergent may be anionic, e.g. sodium lauryl ether sulphate or triethanolamine lauryl sulphate, at least 4% of salt, e.g. sodium and ammonium sulphate is preferred a levelling agent, e.g. a polypeptide may also be used the preferred buffering agents being acetic acid-sodium acetate and citric acid-sodium citrate.