baber/WOPTO huggingface dataset:
Patent GB-927671-A (GB)
Title: A container for dispensing pulverulent or granular materials
IPC: B01J8/00
Filed: 1961-03-08
Abstract: 927,671. Powder distributors. E. A. FONTANA. March 8, 1961, No. 8422/61. Class 69(3).  A container 1 has a base 3 with a filler opening 12 and a closure 13, and an upper wall 2 with discharge orifices 10 controlled by a disc 5 rotatably supported by a rivet 4. The disc has radially upstanding tongues 8 extending through the orifices 10, and a further tongue 9 extending through a slot 11. Recesses 7 or salient portions 6 adjacent the tongues are brought into coincidence with the discharge orifices to open or close them by moving the tongue 9. Clogging of the orifices is reduced by the sweeping action of the tonguse 8. Alternatively the disc may be as shown in Fig. 4 with orifices 14 or slots 15 adjacent the tongues 8, and the container may have the shape shown in Fig. 5.
Patent GB-468404-A (GB)
Title: An improvements in or relating to machines for relief-grinding hobs and like tools
IPC: B24B3/02
Filed: 1936-03-21
Abstract: 468,404. Grinding hobs &c. MONARCH TOOL CO., Ltd., and WILSON, H. March 21, 1936, No. 8452. [Class 60] A machine for relief-grinding the teeth of hobs &c. comprises a lever member c pivoted at its lower end, d to the frame of the machine and carrying at its upper end the hob b, which is rotated by mechanism carried on the head, and is ground by a grinding-wheel a rotating on a fixed axis. The head also carries a rotating cam e engaging a roller f journalled in the frame, the cam being so formed that the hob is fed slowly towards the wheel a, during grinding and is moved away quickly, when the wheel approaches the end of a hob tooth, by a shoulder e<1> on the cam. The wheel may be carried by the head, the hob then rotating on a fixed axis.
Patent GB-1088861-A (GB)
Title: Machines for producing sealed-edge articles
IPC: B21D43/02
Filed: 1965-02-26
Abstract: The subject matter is identical with that disclosed in Specifications 1,088,862, 1,088,863 and 1,088,864, but the claims differ.
Patent GB-1159774-A (GB)
Title: Improvements in or relating to Separating Devices for Sheet-Form Data Carriers in Pneumatic Transport Systems.
IPC: G06K13/107
Filed: 1968-02-22
Abstract: 1,159,774. Feeding sheets. SIEMENS A.G. 22 Feb., 1968 [23 Feb., 1967], No. 8552/68. Heading B8R. Sheets are separated from the top of a stack St, being first pulled upwards by the suction of a suction chamber SK and a suction finger SF, and then, when suction is shut off from SK and SF, moved to the right by suction of a suction roller SW, being fed under a guide plate M to rollers T, and double feed is prevented by a suction stripper roller AW rotating oppositely to the roller SW, which feeds back a second lower sheet, which is not subject to the suction of the roller SW, on to the stack. The top of the stack is maintained at a distance H below the suction chamber SK by means of a support plate P urged upwards by a spring F, the action of which is modified by the air pressure within bellows B, which pressure is controlled by a regulator R. Suction is connected to the roller AW only when double feed occurs, and is sensed by a scanning device. The suction surface of the roller AW is effective only on the side facing the feed path. A device L for reading data on the sheet may be combined with the chamber 8K.
Patent GB-1457665-A (GB)
Title: Process for the introduction of fluorine into the 21-position of 20-oxo-steroids
IPC: C07D/
Filed: 1974-02-26
Abstract: 1457665 Preparation of 21-fluorosteroids CIBA-GEIGY AG 26 Feb 1974 [28 Feb 1973] 8620/74 Heading C2U 21-Fluoro-steroids are prepared by treating steroids of the partial formula (wherein X is a reactively esterified hydroxyl group other than a fluorine atom; Y is H or a C 1-7  aliphatic radical; Z is an optionally substituted geminal hydrocarbon radical in which the C atom attached to the 16- and 17-oxygen atoms does not carry a double bond; and "st" is the remainder of the steroid) successively (a) with the product of the action of an alkali metal on a polycyclic aromatic hydrocarbon in an aprotic solvent, and (b) with perchloryl fluoride in an aprotic solvent. The preferred metal-hydrocarbon reagent is lithium biphenyl. The postulated intermediate (not isolated) contains a 17#-C( = CH 2 )OM group wherein M is the alkali metal. In the sole example, the product is 3,3 - ethylenedioxy - 16α,17α - isopropylidenedioxy - 20 - oxo - 21 - fluoro - 5 - pregnene.
Patent GB-164183-A (GB)
Title: An improvement in the purification of coal gas and like gases
IPC: C10K1/26
Filed: 1920-03-24
Abstract: Contact substances such as iron or nickel or their compounds after use for converting the carbon disulphide in coal and like gases into sulphuretted hydrogen, are revivified by being treated with a mixture of air and waste furnace gases.  The proportion of waste gases is diminished until finally air alone is used, but the quantity of oxygen passing in unit time is constant whatever the proportion of waste gases to air.
Patent GB-621685-A (GB)
Title: Smokeless powder
IPC: C06B45/02
Filed: 1946-03-20
Abstract: 621,685. Propellent explosives. NEWTON, E. P. (Hercules Powder Co.). March 20, 1946, No. 8708. [Class 9 (ii)] A large grain, smokeless powder having a web thickness greater than 0.2 inch and characterised by a heat of explosion greater than 1000 cals. per grm. comprises nitrocellulose, e.g. 45-60 per cent, an explosive and/or non-explosive non-volatile plasticizer, e.g. 38-53 per cent, and an opaqueing agent, e.g. 0.01-2.0 per cent of nigrosine dye, lampblack, graphite, or titanium dioxide, capable of rendering the powder impervious to radiant energy. The plasticizer should be 5 per cent non-explosive, such as diethyl phthalate or additional stabilizer, and the remainder explosive, such as nitroglycerine, diethylene glycol dinitrate, diethanol nitramine dinitrate, or other nitrated polyhydric alcohol. A minor percentage, say 1 per cent, of a stabilizer may be added, e.g. ethyl centralite, methyl centralite, methyl ethyl centralite, ethyl phenyl urethane, diphenyl urethane, or diphenyl urea; up to 5 per cent may be used where additional stabilizer replaces the non-explosive plasticizer. A minor percentage, say 1 per cent, of an inorganic salt of a bi- or poly-valent cation may be added as ignition aid, e.g. potassium sulphate or other potassium salts. A minor percentage, say up to 0.5 per cent, of a lubricant may also be added to assist extrusion, e.g. candelilla wax, lead stearate, or magnesium stearate. The components of the propellant are mixed and rolled into colloided sheets which are cut into strips, and these strips are wound into carpet rolls which are extruded.
Patent GB-197798-A (GB)
Title: Improved vacuum pump
IPC: F04B39/08
Filed: 1922-12-14
Abstract: 197,798. Heatly, H. Dec. 14, 1922. Valves, arrangement of.-In a vacuum pump having a sleeve valve between the piston and the cylinder, actuated by cranks or eccentrics on the crank-shaft, in order to prevent breakage of the vacuum at the beginning of the in-stroke, the usual cylinder outlet port N is connected only indirectly with the atmosphere through a passage N<1>, ports N<2>, N<3> and outlet R, the ports being controlled by ports in the sleeve and a D-shaped recess in the piston, so that outlet to atmosphere takes place only after a substantial portion of the stroke has been effected.
Patent GB-596920-A (GB)
Title: Improvements in and relating to methods of and means for passing electrical conductors through metal walls
IPC: H01B17/30
Filed: 1945-04-10
Abstract: 596,920. Metal - to - - glass seals. GENERAL ELECTRIC CO., Ltd., BREADNER, R. L., and SIMMS, C. H. April 10, 1945, No. 8839. [Class 36] In glass - sealing a conductor-lead 3 to a flanged metal eyelet 6, the latter is assembled on a die 1 profiled to fit the step 10 of the part 6. A glass tube 12 is then mounted on the step 10 and softened by heat whilst suction is applied through the aperture 5 of the die to cause the glass to collapse on to the lead 3 and into the neck 9 of the part 6. As shown, the lead 3 is pre-fitted with a glass bead 11 as, for example, described in Specification 575,084.
Patent GB-398433-A (GB)
Title: Improvements in and relating to electric measuring instruments
IPC: G01R11/48
Filed: 1933-03-23
Abstract: 398,433. Current and pressure meters. TINSLEY, H. and GALL, D. C., (trading as TINSLEY & CO., H.), Werndee Hall, Stanger Road, South Norwood, London. March 23, 1933, No. 8850. [Class 37.] For separately measuring the in-phase and quadrature components of alternating current or pressure, two systems are provided, one being connected to a reference alternating current supply and the other to the current or voltage to be measured, these circuits being so arranged as to react on one another, and means being provided for changing the phase of the current in one of the systems. As shown in Fig. 1, a fixed coil a and a moving coil c are connected respectively to a reference voltage and the current or pressure to be measured, and are arranged to have the same timeconstant so that the torque produced is a maixmum when the magnetic fields produced by the coils a, c are in phase. A switch g enables a condenser e, with or without a resistance f, to be included in series with the coil c or to be short-circuited. With the switch g closed the reading of the instrument is proportional to the in-phase component. With the switch opened, the phase of the current in the coil' c is displaced through 90‹ whilst the magnitude is unchanged, so that the quadrature component is measured. Alternatively the condenser may be inserted in the circuit of the coil a. In a modification, Fig. 2, the two fields produce a torque on a disc h turning it against spring action. The reference voltage is connected to a magnet j, and the voltage to be measured is connected either to a highly inductive winding k for measuring the quadra. ture component, or to a winding l in series with a swamp resistance l<1> for measuring the in-phase component. In a further modification, Fig. 3, the electromagnet m is provided with a winding m<1> which may be connected by a switch m3 in series with a condenser m<2>, the circuit m<1>, m<2> being of resonant frequency so as to cancel out the inductance of the winding m when it is required to measure the in-phase component. Fig. 4 shows one method by which the coil a may be supplied with currents in quadrature from a three-phase supply p, p<1>, p<2>, the coil a being connected by a switch P with either of two secondary coils n, o, the corresponding primary coils n<1>, o<1> being connected as shown, An alternative arrangement is shown in Fig. 5 in which one terminal r<7> is connected to a point r<1> on one phase winding r. r<4> such that the voltages between the terminals r<5>, r<6> and r<7>, r<8> are in quadrature. When used with a two-phase supply, the coil a is connected alternately across the two phases. An electrostatic instrument may be employed instead of an electromagnetic instrument. A valve may be employed, the grid being connected to the voltage to be measured and the anode circuit to the reference voltage, the phase of one or both being changed to measure the components.
Patent GB-1380371-A (GB)
Title: Machine having a telescopic boom
IPC: B66C23/687
Filed: 1973-02-23
Abstract: 1380371 Hydraulic control circuits HARNISCHFEGER CORP 23 Feb 1973 [24 Feb 1972] 8928/73 Heading F1P In the circuit shown, Fig. 2, when only one of the two rams 22, 24 is being extended pressure fluid is supplied from a pump 44, whereas when both rams are being extended fluid is supplied from pumps 42 and 44. Rams 22, 24 are respectively controlled by valves 54, 52 provided with operating levers 88, 82. With a valve 48 in the position shown, fluid from pump 42 returns to a reservoir 67, whilst fluid from pump 44 passes to valve manifold 50 and then either to reservoir 76 or to one of the rams for extending it, or to both rams for retraction. If the valves 52, 54, are operated to extend both rams simultaneously, the pressure rise in lines 106, 108 is sufficient when added together at inlet 62 to move the valve 48 against a spring 60 thereby connecting the output of the pump 42 to the line 68 as well as that of pump 44. Adjustable throttles 110, 112 are provided in lines 106, 108 to balance the flow therein. As described the rams are used in a telescopic boom for a crane or earth-working machine.
Patent GB-515250-A (GB)
Title: Process and apparatus for effecting metallurgical reactions regularly and rapidly
IPC: F27D27/00
Filed: 1938-03-23
Abstract: 515,250. Refining iron, &c. SOC. D'ELEC-. TRO - CHIMIE, D'ELECTRO - METALLURGIE, ET DES ACIERIES ELECTRIQUES D'UGINE. March 23, 1938, No. 8958. Convention date, March 26, 1937. [Classes 72 and 82(i)] In a process for rapidly effecting metallurgical reactions in the presence of a controlled gaseous atmosphere, part at least of the reactants being liquid, the reactants are brought together, without applying external heat, in a gas-tight apparatus which is so shaped and animated with a regular or irregular rocking or rotating movement that there is caused an intermixing and interpenetration of the reactant and agitation of the mixture so produced, the apparatus being, if desired, provided with means for introducing gas into and for removing gas from the same. If another gas is evolved in the process, the gas pressure is allowed to rise to such an extent so as to restrain this evolution and prevent it interfering with the main operation especially when the latter is concerned with the dephosphorisation and/or desulphurisation of ferrous metal. The process may be carried out in apparatus comprising a casing 3 having two chambers 1, 2 and mounted on an axis 5 so that it can be rocked to cause a violent intermixing of metal 6 and slag 7. The casing 3 is provided with a gas-tight cover 9 which is provided with a safety. valve 14 and may be provided with valved conduits for the removal or supply of gas. The apparatus may be used for the deoxidation of metals and alloys with a reducing slag, the oxygen initially present being removed or diluted by the addition of inert gas or for the decarburization of metals and alloys such as ferro-chromium, the gases produced being removed during the process. Specifications 477,083, and 499,302, and French Specification 780,125 are referred to.
Patent GB-1368598-A (GB)
Title: Light beam polarization modulator
IPC: H01S3/115
Filed: 1971-07-12
Abstract: 1368598 Modulating light WESTINGHOUSE ELECTRIC CORP 12 July 1971 [17 Aug 1970] 9139/74 Divided out of 1363885 Heading H4F [Also in Division H1] In the parent Specification 1,363,885 a birefringent crystal 2 divides an incident plane, circularly or elliptically polarized beam 1 into parallel E and O rays 8, 7, which are passed through respective birefringent crystals 11, 10, a #/2 plate 9 and are recombined by a birefringent crystal 3 complementary to crystal 2. Plate 9 serves to render the two path lengths equal so that the recombined beam 1<SP>1</SP> normally has the same polarization as beam 1. When an electric field is applied along the Z axis of at least one of the crystals 10, 11 (i.e. orthogonal to the optical path and at 0 or 90 degrees to the incident polarization vector) the optical path lengths become unequal due to the changes in refractive index and the polarization of beam 1<SP>1</SP> is altered. As particularly described in the parent, a beam 1 plane polarized at 45 degrees to the optic axes of crystal 2 may be switched to a beam 1<SP>1</SP> plane polarized at 135 degrees to the optic axes if crystals 10, 11, provide a #/2 path difference when actuated and passed or blocked by an analyser 12. In the parent Specification 1,363,585 is described a laser, Fig. 5, including a half mirror 17, active rod 16 and mirror 15, in which birefringent crystals 2, 10 and 11 act with the mirror 15 to provide an arrangement generally equivalent to that of Fig. 1, (plate 9 is absent), which may be used to Q switch the laser. If the laser rod 16 does not provide polarized light it is necessary to provide an analyser/polarizer 21. Since the light passes through crystals 10, 11 twice, the relative path difference per pass should only be 90 degrees.
Patent GB-730506-A (GB)
Title: Improvements in or relating to gas turbine engines
IPC: F01D5/08
Filed: 1953-04-02
Abstract: 730,506. Gas turbine engines. GENERAL MOTORS CORPORATION. April 2, 1953 April 22, 1952], No. 9144/53. Class 110 (3). In gas turbine engine comprising an axial flow turbine rotor having at least two stages, an annular series of passages 34 is formed in the stator structure 32 adjacent the blade roots at one end of the rotor for the supply of coolant gas such as air. The rotor comprises bladed wheels 16 and spacer discs 18, the discs 18 having oppositely-directed peripheral flanges 50, 52 to form with the adjacent faces of the wheel rim annular chambers 46, 48. Coolant air passages 42, 44 extend through the wheel rims adjacent the blade roots 38 and apertures 58, 60, 62 are formed in the spacer discs to interconnect the chambers 46, 48. Cooling air supplied from the engine compressor passes from the passages 34 and flows through the passages and chambers as shown by the arrows and finally escapes into the working fluid passage adjacent the tail-core 26. A circumferential groove is formed in the peripheral face of each wheel rim and the blade roots are centrally slotted so that an annular channel 40 is formed, the passages 42, 44 connecting the channel to the faces of the wheel rim. The passages 42, 44 may be in line or may be staggered to increase the circumferential flow of the cooling air. Radial clearance is provided between the inner portions of the flanges 50, 52 on the spacer discs and the adjacent wheel rims when cold. The fan 14 draws cooling air over the forward turbine bearing.
Patent GB-250593-A (GB)
Title: Improvements in or relating to absorption refrigerating or heating machines
IPC: F25B15/10
Filed: 1926-04-07
Abstract: 250,593. Siemens - Schuckertwerke Ges. April 8, 1925, [Convention date]. Refrigerating, absorption machines and processes for. - In continuous cycle systems a circulation of the liquor on either the low-pressure side or the high pressure side of the system is effected by the propulsive action of the vapour from the opposite side on a column of the liquid in a rising pipe. In one arrangement, shown in Fig. 1, vapour is generated from solution at high pressure in a heated vessel 24 and passes directly through a pipe 26 to a condenser 32, from which the liquid rises through a pipe 33 to an evapora. tor 34. The weak warm liquor rises from the bottom of the generator 24 through a pipe 27 and is lifted further into the absorber 30 through a riser pipe 29 by a flow of vapour through a pipe 28 from the evaporator. The strong liquor descends through a pipe 31 to the generator. The evaporator cools a medium flowing through a coil 23 and the absorber is cooled by a medium in a coil 21. The heat of condensation and absorption may be utilized elsewhere. In another system, in which water vapour is absorbed in sulphuric acid, the generator may take the form of a rising coiled pipe discharging into a separator vessel, from which vapour is led to another rising pipe to effect a circulation of liquid between the evaporator and a reabsorber at a lower level than the evaporator. In a further system shown in Fig. 3, similar to that described in Specification 251,251, a neutral gaseous medium circulates between an evaporator 61 and an absorber 60, and the liquor descending a pipe 91 from the absorber is lifted through a rising coil 63 to a separator 65 by gas from a pipe 64 leading from a separator 69. The liquor descends a pipe 67 from the separator 65, exchanges heat with weak liquor that is on its way through a pipe 73 to the absorber, and is lifted through a second coil 62 to the separator 69 by gas from the generator 71. The gas from the separator 65 is used in a device 86 for effecting a circulation of refrigerant and neutral vapour between the evaporator and absorber through pipes 76, 77, as described in Specification 229,332, and also for lifting liquid flowing down from the evaporator up through a rising coil 82 into a reabosrber 83. The evaporator 61, which is surrounded by medium to be cooled, is fitted with porous discs 79 having staggered apertures 80, and the absorber 60 is fitted with a tray 74 and a cooling coil 75. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of a rising coil as the evaporator in the sulphuric acid and water system above described. This subjectmatter does not appear in the Specification as accepted.
Patent GB-968419-A (GB)
Title: Ethylene copolymers
IPC: C08F210/00
Filed: 1962-03-09
Abstract: Gaseous ethylene is copolymerized with a reticulating comonomer in the presence of a catalyst prepared from a halide of a transition metal and an alkyl compound of a metal of Group I to III (Lange's Table) to form a thermoplastic cross-linked copolymer.  In addition to the reticulating comonomer, a monovinyl comonomer may also be present.  The reticulating comonomers are comonomers containing two ethylenically unsaturated groups which act as cross-linking agents for ethylene e.g. divinyl benzene, divinyl ether, divinyl ketone, vinyl acrylate, vinyl methacrylate, methallyl methacrylate, allyl methacrylate, ethylene diacrylate, ethylene dimethacrylate, acrylic acid anhydride and methacrylic acid anhydride may be used. The preferred monovinyl comonomers are styrene and homologues of styrene. The reticulating comonomer and monovinyl comonomer, if used, can conveniently be continuously added, together with the ethylene, preferably in an amount such that the comonomers constitute from 1 to 50% by weight, calculated on the weight of ethylene, in the copolymer produced. The catalyst is usually dissolved in a hydrocarbon solvent. According to the examples: (1) ethylene is copolymerized with divinyl ether using titanium tetrachloride and aluminium triethyl as catalyst; (2) ethylene is copolymerized with a technical divinyl benzene mixture containing divinyl benzene, ethyl vinyl benzene and diethyl benzene; (4) ethylene containing less than 0.2% acetylene is polymerized with divinyl ketone and styrene (ethyl benzene is also present) using zinc diethyl and zirconium tetrachloride as catalyst.
Patent GB-1218987-A (GB)
Title: Method of conveying castings
IPC: B22D11/128
Filed: 1968-02-26
Abstract: 1,218,987. Continuous casting. MANNESMANN A.G. 26 Feb., 1968 [24 Feb., 1967], No. 9229/68. Heading B3F. In an arcuate path continuous casting machine a casting 2 is withdrawn by powered rollers 4 from a curved mould 1. Intermediate the mould 2 and withdrawal rollers 4 are a set of guide rollers 3 some of which 3<SP>1</SP> are powered. The powered rollers lie adjacent points of inflection in the arcuate casting guideway. In operation the powered guide rollers 3<SP>1</SP> are given higher torques than the withdrawal rollers 4. The torques of all the powered guide rollers 3<SP>1</SP> may be equal, or they may decrease in the direction of casting travel.