baber/WOPTO huggingface dataset:
Patent GB-1439662-A (GB)
Title: Direct fuel injection type diesel engines
IPC: F02M61/00
Filed: 1973-08-24
Abstract: 1439662 Combustion chambers ISUZU MOTORS Ltd 24 Aug 1973 [25 Aug 1972 (3)] 40342/73 Heading F1B A direct fuel injection diesel I.C. engine comprises a combustion chamber defined by a cylinder and a piston 2 slidable therein and having a cavity 1 of generally square cross-section perpendicular to its axis, the corners Y of the cavity being arcuate with radius of curvature from 0.40 to 0.75 of the radius of a circle to which the plane portions of the cavity wall are tangential and which lies in a plane perpendicular to said axis and meets the walls in the zone where fuel jets from orifices 5 of a fuel injection nozzle 3 impinge. The angle between the diagonal of the cavity and the direction of the axes of the orifices is from 5 to 25 degrees.
Patent GB-1119987-A (GB)
Title: Reciprocating pumps
IPC: F04B7/06
Filed: 1965-09-23
Abstract: 1,119,987. Linkwork. COMPAGNIE ELECTRO-MECANIQUE. 23 Sept., 1965 [23 Sept., 1964], No. 40674/65. Heading F2K. [Also in Division F1] Pump plunger 7 is reciprocated and rotated in the pump body 1 by a metal wire or blade 8 secured to the plunger and a rotatable disc 9. The axis of the disc is offset from the plunger axis and the wire or blade is secured to the disc at a position spaced from its axis. The plunger may be actuated on its delivery stroke by a spring 12 or on both suction and delivery strokes by the wire or blade , Fig. 3 (not shown).
Patent GB-1318427-A (GB)
Title: Tablet for addition to nickel electro plating baths
IPC: C25D3/12
Filed: 1970-08-25
Abstract: 1318427 Tablet for addition to nickel electroplating baths H W DETTNER 25 Aug 1970 [13 Nov 1969] 40786/70 Heading C7B A tablet for addition to nickel baths comprises at least one nickel bath addition agent for the operation of a nickel electro-plating bath together with a total of 0À05 to 70% by weight, based on the total weight of the tablet, of talc, a fluorinated olefine polymer and/or finely dispersed silicon dioxide as a filler. Specified bath addition agents are nickel sulphate and chloride, cobalt sulphate, H 3 BO 3 , 1, 4 butinediol naphthalene sulphonic acids, coumarin, pyridine compounds, fuschin (aniline red), unsaturated alcohols, compounds of Se, derivatives of benzene sulphonic acid, paraformaldehyde, sodium vinyl sulphonate choline chloride, sodium ethyl sulphonate, and sodium lauryl sulphonate. To make the tablets, the mixed materials may be pressed between dies or be extruded and cut. To aid release of the tablets from the dies, the dies may be (a) covered with dry Ni salt and/or H 3 BO 3 , or (b) Cr plated or (c) coated with a rubbery plastic layer such as a polyurethane addition product or fluorinated hydrocarbon. A single tablet may be 50-150g and may be added to an electro-plating bath every 1000 ampere-hours.
Patent GB-1008587-A (GB)
Title: Preparation of magnesium trisilicate
IPC: C01B33/22
Filed: 1962-11-01
Abstract: Magnesium trisilicate, of probable formula Mg2Si3O8.7H2O, is prepared by continuously contacting SiO2 dissolved in an aqueous alkaline medium with a soluble Mg salt in amount sufficient to form a precipitate of magnesium trisilicate and an aqueous alkaline solution containing 0.0008-0.04 mole Mg salt per litre. The alkaline medium may be e.g. NaOH or KOH.  The weight ratio SiO2:Na2O may be 1.3-1.5, producing a product having weight ratio SiO2:MgO of 2.1:2.3.   The Mg salt may be e.g. the sulphate, nitrate, chloride, bromide, acetate, bromate or chlorate.  The temperature may be e.g. 10-50 DEG  C.  The reactants may be introduced in dry form into the medium wherein they dissolve and react. The magnesium trisilicate may form a slurry and may be recovered by filtration.
Patent GB-1078121-A (GB)
Title: Improvements in or relating to spectacle frames
IPC: G02C5/22
Filed: 1964-10-09
Abstract: 1,078,121. Spectacle hinges. ANGER WERKE G.m.b.H. [trading as WILHELM ANGER OHG]. Oct. 9, 1964 [Oct. 25, 1963], No.41379/64. Heading G2J. A spectacle hinge part 4 has a hinge eye and a base 5 provided with an externally toothed expansible sleeve 9 which enters a bore 2 in the spectacle frame 1 and is expanded into contact with the sides thereof by a screw 8 engaging an internal thread in the sleeve 9 and a locating pin 6 which enters a second bore 3 in the frame 1.
Patent GB-1397153-A (GB)
Title: Production of a catalyst for oxidising methanol
IPC: C07C45/00
Filed: 1972-09-07
Abstract: 1397153 Formaldehyde DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 7 Sept 1972 [14 Sept 1971] 41551/72 Heading C2C [Also in Division B1] Formaldehyde is produced by the oxidation of methanol with a free oxygen-containing gas at elevated temperature over a catalyst comprising oxidic compounds of molybdenum and iron in a weight ratio calculated as MoO 3  to Fe 2 O 3  of less than 10 to 1 and having a titanium dioxide content of up to 90% wt, wherein the catalyst has been prepared by a specified method of coprecipitation, shaping and calcining (see Division B1). The oxidation is effected at 275-310 C., using a methanol to air molar ratio of from 129 : 1 to 15 : 1 by passage of the gas mixture through a tubular reactor immersed in an oil bath.
Patent GB-926642-A (GB)
Title: Cutter testing mechanism
IPC: B23F23/00
Filed: 1961-11-21
Abstract: 926,642. Testing gears. FELLOWS GEAR SHAPER CO. Nov. 21, 1961 [Dec. 2, 1960], No. 41577/61. Class 106 (2). [Also in Group XXII] Apparatus for testing a cutter used in gear finishing or thread generating machines comprises a master gear X mounted on a spring- urged slide 17 on a member 7 whose position in directions perpendicular to the axis of the cutter and parallel thereto can be adjusted by screws 5, 25, respectively. Gear X is urged by spring 23 into meshing engagement with cutter and when the cutter is rotated any eccentricity therein moves gear X and causes endwise movement of slide 17 detected by a dial indicator and an electrically-operated recorder having a probe 30.
Patent GB-1167005-A (GB)
Title: Improvements relating to electric primers.
Inventor: BOSSARD ANDRE
IPC: F42B3/16
Filed: 1967-09-12
Abstract: 1,167,005. Electric primers. DAVEY BICKFORD SMITH & CIE SOC. ANON. FRANCAISE ETABS. 12 Sept., 1967 [17 March, 1967], No. 41605/67. Heading F3A. A delayed action electric primer which will not ignite ambient gas comprising a metal tube 1, e.g. of copper, containing an ignition charge 6 with electrical ignition means connected to electrical leads 8 passing through a plastics plug 7; a retarding charge 4 contained in a metal tube 5 which will withstand the effects of the explosion of the retarding charge; a primary charge 2 e.g. of tetryl; and a cylindrical component 9 formed with an axial passage having a cylindrical portion 10 and a frusto-conical portion 11 filled with a priming charge 3, e.g. of lead nitride, the component 9 being constituted by polyvinyl chloride, polyethylene or another plastics material having a plasticity sufficient to enable it to absorb the shock of the explosion of the priming and primary charges and thereby preventing the tube 5 from bursting and projecting incandescent slag to the outside.
Patent GB-911658-A (GB)
Title: Improvements in and relating to methods and apparatus for making fold lines in fibrous material
IPC: B23C3/30
Filed: 1960-12-02
Abstract: 911,658. Grooving sheet material. SVENSKA TANDSTICKS A.B. Dec. 2, 1960 [Feb. 10, 1960], No. 41618/60. Class 31 (1). [Also in Groups XXII and XXIII] Cardboard 2 which is advanced along a feed path 1 has a groove 21 cut in the surface thereof by the edge between a rifled envelope surface 9 and a plane, or concave, and preferably smooth end surface 10 of a rotating, cylindrical or conical, cutter 8, the axis of rotation of which forms an acute angle with the plane of the feed path. The apparatus shown comprises a plurality of motor-driven cutters 8 carried by holders 5 which are each adjustable laterally and vertically in relation to the feed path 1. The teeth 22 of the cutters preferably have a a negative chipping angle. The axes of the cutters are preferably situated in planes forming an angle of 90 to 110 degrees with the feed direction of the cardboard. Each cutter is given such a rotational speed that the product of the diameter in centimetres of the cutting edge of the cutter and the square of the number of revolutions per second of the cutter is at least 130,000. Preferably, the cardboard is advanced with its grain perpendicular to the feed direction of the cardboard. The end surface of the cutter may be provided with teeth. In a modification, Fig. 5 (not shown), the teeth of the cutter at their ends are bevelled angularly to the end surface of the cutter for forming a flat bottom in each of the grooves.
Patent GB-1212291-A (GB)
Title: Foamed sheets of thermoplastic polymers
Inventor: PARRISH ROBERT GUY
IPC: C08J9/14
Filed: 1968-08-30
Abstract: 1,212,291. Laminates. E. I. DU PONT DE NEMOURS & CO. 30 Aug., 1968 [31 Aug., 1967], No. 41623/68. Headings B5N. [Also in Division C3] A laminate comprises a foam sheet of a linear, thermoplastic, crystalline organic polymer of film forming molecular weight free from crosslinking, the polymer having a work-to-break value (as defined) of at least 10,000 in.-lbs./in<SP>3</SP>, the foam sheet consisting of polyhedral shaped closed cells whose median diameter (as defined) is at least 500 microns, the cell walls being characterized by a non-uniform texture, and the foam having a maximum density of 0À03 g/cc. which is laminated to a layer of paper, paper board orwood, a metal sheet, foil, plastic sheet or film, woven or non-woven fabric, other foams, glass leather or rubber sheeting. The foam sheet is made by extruding a solution of the polymer in an activating liquid (as defined) having a boiling point at least 25‹ C. below the melting point of the polymer and being a solvent for the polymer under the extrusion conditions, but dissolving less than 1% by wt. of the polymer at temperatures up to its normal boiling point, the temperature of the solution immediately before its extrusion being above its freezing point and below the temperature at which adiabatic evaporation of all the activating liquid present will produce insufficient cooling to precipitate solid polymer, and the concentration of activating liquid therein ;being between 98% by weight and a minimum amount sufficient to cause precipitation of solid polymer on adiabatic evaporation, the solution being extruded into a region of lower pressure and temperature whereby vaporization of the activating liquid rapidly ccols the solution to a temperature at which solid polymer precipitates and the polymer orientation in the cell wall acquired during extrusion is preserved, formation of the bubble nuclei during the extrusion being restricted to less than 10<SP>5</SP> per cubic centimeter by maintaining the temperature of the solution before the extrusion below the self-nucleating temperature of the activating liquid (as defined) and fibrillation being prevented by maintaining the solution below its fibrillation temperature (as defined).
Patent GB-1399016-A (GB)
Title: Film for colour radiography
IPC: G03C5/16
Filed: 1972-09-08
Abstract: 1399016 Radiographic film SPITALUL DE COPII CALARASI 8 Sept 1972 [9 Sept 1971 25 July 1972] 41893/72 Heading G2C [Also in Division H5] Colour radiographic film comprises a transparent film base d having on one side a multi-layer photographic negative coating A comprising individual coatings a, b and c and on the other a multi-layer photographic positive coating B comprising individual coatings e and f. On exposure and development, the individual layers a-f are coloured respectively cyan, magenta, yellow, yellow and cyan. A fluorescent or phosphorescent material may be included in one or more of the individual layers.
Patent GB-1248828-A (GB)
Title: Process for the manufacture of cotelomers of styrene with semi-esters of maleic acid
IPC: C08F212/08
Filed: 1969-08-22
Abstract: 1,248,828. Cotelomers of styrene with semi-esters of maleic acid. FARBWERKE HOECHST A.G. 22 Aug., 1969 [24 Aug., 1968], No. 41937/69. Heading C3P. [Also in Division C2] Cotelomers of styrene and semi-esters of maleic acid having a M.W. within the range of from 500 to 2000 are obtained by telomerizing 40 to 80 mole per cent of styrene with 60 to 20 mole per cent of at least one semi-ester of maleic acid and a (C 1 -C 10 ) aliphatic or cycloaliphatic primary or secondary alcohol, the carbon chain of which may be interrupted by 1 to 4 oxygen atoms, in the presence of a (C 1 -C 10 ) aliphatic or cycloaliphatic primary or secondary alcohol the carbon chain of which may be interrupted by 1 to 4 oxygen atoms, the molar ratio of alcohol to monomers being within the range of from 5 : 1 to 1 : 5, and 0À05 to 10% by wt., calculated on the monomers, of a free radical forming initiator at a temperature within the range of from 65‹ to 180‹ C. Examples are given for the production of the compounds.
Patent GB-1272164-A (GB)
Title: Improvements in and relating to a relief valve for a multi-circuit compressed air brake system
Inventor: BECK SIEGFRIED
IPC: B60T17/04
Filed: 1970-09-02
Abstract: 1,272,164. Fluid pressure brakes; valves. ROBERT BOSCH G.m.b.H. 2 Sept., 1970 [28 Nov., 1969], No. 41977/70. Headings F2F and F2V. A relief valve for a multi-circuit compressed air brake system comprises a housing and two individual valve assemblies, each including a valve closure member 26, 27 urged against a valve seat 24, 25 by a spring 28, 29, the loading of which can be regulated by means of an adjusting screw 28<SP>11</SP>, 29<SP>11</SP>. Each closure member 26, 27 has a disc-shaped seating surface 30, 31 and an annular sealing flange 32, 33 with a lip 36, 37 by which it can slide over the outer surface of a sleeve 40, 41, surrounding the spring 28, 29. Air is supplied through inlets 22, 23 and exhausted from a common outlet 43, the springs being adjusted so that the valves open at different pressures.
Patent GB-1107636-A (GB)
Title: Refrigeration control
Inventor: SUTTON WALTER THOMPSON
IPC: G05D23/24
Filed: 1965-10-04
Abstract: 1,107,636. Automatic temperature and defrost control. TEXAS INSTRUMENTS Inc. Oct.4, 1965, No.41987/65. Heading G3R. [Also in Division F4] A system for controlling the temperature of a refrigeration apparatus and also the frost build up therein comprises a motor M driving the compressor of the refrigerator and a heater H for defrosting the refrigerating element, a thermistor T1 being provided to sense the temperature in the refrigerator cabinet and a thermistor T2 to sense the build up of frost. The resistances of the thermistors T1, T2 control the current flowing in the windings W1, W2 of a saturable reactor S and thereby determining the coupling between a winding W3 on the reactor and either the output winding W4 or W5. A thryristor Q is triggered by the voltages developed in windings W4 or W5 whereby either a thermally operated relay R1, R2 is operated according to the phase of the voltage applied thereto by the secondary winding 15 of the supply transformer 11. Operation of relay R1 controls the compressor motor M by control R1A and operation of relay R2 - by contact R2A - disconnects the motor M and energizes the defrosting heater element. The temperature of the refrigerator cabinet is set by a resistor 21 and a temperature differential is provided by a resistor 25 and relay contact R1B. Resistor 33 sets the defrost operation initiation point whilst resistors 35, 37 and relays contact R2B controls the point at which defrosting is terminated. In a further embodiment the saturable reactor is replaced by a transistor device and the thermistors are included in bridge circuits.
Patent GB-1358420-A (GB)
Title: Method and apparatus for handling sheets
IPC: B65H39/04
Filed: 1971-09-09
Abstract: 1358420 Feeding and delivering sheets XEROX CORP 9 Sept 1971 [9 Sept 1970 (4)] 42104/71 Heading B8R Copy sheets which have been printed by a xerographic machine from a series of precollated original documents, so that the sheets are the successive pages of a booklet, are delivered from the machine on to a receiving tray between adjustable side guides 107, 109, Fig. 2, a lid 52 being in lowered position, the tray having a rising and falling front gate 207, Fig. 3, and the sheets are urged forwards and to the left against the guide 107 by a rotating paddle 209 having angularly disposed blades. In one mode of operation, with the gate in its lower, operative position, the sheets are registered against the gate and the guide 107; and when all the sheets of a booklet are assembled, a stapling device drives a staple through the assembly from below, the gate is raised, drive rollers 380, 381 are raised against idler rollers  to feed the assembly to a tray 401, and the assembly is registered to the left on the tray 401 by a further paddle wheel 415, Figs. 2 and 17. In a second mode of operation, the gate is raised and the sheets are fed directly to the tray 401, where batches of sheets are alternately registered to left and right by paddle wheels 415, 417, which are selectively moved down into contact with the assembly by swinging of a frame 435 about a pivot 439 by a solenoid SOL-4. At the end of a run, a lid 52 is released by a solenoid SOL-5 to be raised slightly by springs around rods 54, 55, and is then open fully by the operator for removal of the batches. Further solenoids control the gate, the stapling device, and the rollers 380, 381, the solenoids and drive motors for the various parts being actuated by a control logic system. The tray 401 is lowered by a motor MOT-3 as the assembly increases in height, the motor being controlled by photo-electric detectors 453, 454. According to the sheet width, the guides 107, 109 are adjusted laterally by the operator after depression of a release handle 131, the guides being mechanically linked so as to move through equal distances in opposite directions, and being also linked by a wire slidable in a sleeve to side guides 151, 153 for the tray 401, which guides 151, 153 move in unison with the guides 107, 109. A further photo-electric detector is provided to detect a sheet jam, when the xerographic machine is turned off. There is also provided a counter to count the sheets passing from the machine to the receiving tray and turn off the machine if there is an overflow condition.
Patent GB-1159344-A (GB)
Title: Improvements in or relating to Fuel Cell Electrodes
IPC: H01M4/86
Filed: 1966-09-23
Abstract: 1,159,344. Air electrodes with selectively gaspermeable layers. LEESONA CORP. 23 Sept., 1966 [30 Sept., 1965], No. 42464/66. Heading H1B. An air electrode comprises a porous metal substrate having a polymer layer at one surface which is selectively permeable to oxygen and impermeable to carbon dioxide and nitrogen. Suitable substrates include porous, particularly bi-porous, structures of Ni, Cu, Fe, Ti, Ta and Zn. Suitable polymers include polystyrene, polyethylene, P.T.F.E., polytrifluoroethylene, polytrifluorochloroethylene, polyvinyl fluoride and polyvinylidene fluoride and copolymers; normally the layer is 0.1 to 10 mils thick and has pores of diameter less than 0.1 micron. The layer may be applied as a paste or by spraying, and blocking of the substrate pores prevented by temporarily filling them with water-soluble or fusible solids. In the example a bi-porous nickel structure is sprayed with a 24 wt. per cent aqueous suspension of P.T.F.E., vacuum dried and heated at 275‹ C. for 10 minutes, then used as an air electrode in a fuel cell using 20% aqueous KOH as electrolyte.
Patent GB-1450171-A (GB)
Title: Manufacture of mosfets
IPC: H01L21/00
Filed: 1973-09-10
Abstract: 1450171 Semiconductor devices HITACHI Ltd 10 Sept 1973 [20 Sept 1972] 42522/73 Heading H1K In the manufacture of a MOSFET one doping step introduces p (or n) type impurities having a maximum concentration at or below the surface of the channel region and another doping step introduces n (or p) type impurities having a maximum concentration below the surface and a surface concentration which is low relative to that of the p(n) type impurities. The steps may be performed in either order, and whereas the first-mentioned step may be carried out by diffusion or ion implantation the other step necessarily involves ion implantation. Fig. 3 shows the application of the invention to pchannel depletion mode MOSFET. The firstmentioned doping step, comprising boron ion implantation, here introduces the p-type channel region 7, while the other doping step, comprising phosphrous ion implantation, compensates the boron impurity at depths within the substrate beyond the maximum depth at which the field effect of the gate electrode 8 can operate, thus reducing the source-drain leakage current. In the application of the invention to n-channel MOSFETs the silicon oxide gate 5 is replaced by aluminium oxide. Reference has been directed by the Comptroller to Specification 1261723.
Patent GB-1460369-A (GB)
Title: Digital filter
IPC: H03H17/06
Filed: 1974-10-01
Abstract: 1460369 Active filters INTERNATIONAL BUSINESS MACHINES CORP 1 Oct 1974 [23 Oct 1973] 42649/74 Heading H3U A digital filter having an output represented by the function where y i  are digital samples representing the filtered output signal, a k  are an ordered set of constant coefficients and z i-k  are digital signal samples comprises: means for computing the functions where p takes the values 1 to n/2, n being the number of coefficients; means for delaying each function (u i ) p  by 2(p-1) sample times; and means for summing the resulting functions (u i ) 1 , (u i-2 ) 2 , ..., {u i-n+2 ) n/2 . The method of computetion reduces the number of multipliers necessary. Fig. 1 shows the equivalent of a transversal filter employing six coefficients, i.e. n = 6. Input signal samples x i-1  are delayed in SR1 by one sample period to produce x i-2 , and the two signals are fed to adders Ad1...Ad6 in which constant coefficients a 1 ...a 6  are added. The outputs of the adders are fed to multipliers M1, M2, M3 whose outputs are combined in adders Ad7, Ad8, Ad9 with a term derived from multiplier M4 and inverter I 1  to yield The signal from Ad9 is applied to a two word shift register SR2 whose output is added to the output from Ad8 and the resulting combined signal is fed to a second two word shift register SR3 which delays the combined signal two more sampling periods. The output from this shift register is then added to the output from adder Ad7 and the resulting sum is added to a constant to yield the output expression which is the required output The filter may be combined with a second, similar one, to form a recursive filter, or equalizer, Fig. 2 (not shown).
Patent GB-1104331-A (GB)
Title: Improvements in and relating to steam boilers
Inventor: HODDINOTT PETER FROST
IPC: F22D1/36
Filed: 1964-10-20
Abstract: 1,104,331. Heating feed water. DAVEY PAXMAN & CO. Ltd. 20 May, 1965 [20 Oct., 1964], No. 42715/64. Heading F4A. The economiser 1 of a shell boiler, heated by smoke tubes 2, has a cooler 5 for continuous blow down from the boiler, disposed near its water inlet 3 in the coolest water layer. The economiser may comprise a separate vessel from the boiler or may be contained in a separate part of the same vessel separated from the boiler by a double plate baffle with a narrow water space in between.