baber/WOPTO huggingface dataset:
Patent GB-1195500-A (GB)
Title: Internal Combustion Engine Air Inlet Control Mechanism
IPC: F02D17/04
Filed: 1968-11-15
Abstract: 1,195,500. Stopping; spray carburetters; preventing unauthorized use. GENERAL MOTORS CORP. Nov. 15, 1968 [Dec. 6, 1967], No.54380/68. Headings F1B and F1K. In an I.C. engine the air inlet 16, Fig. 2, e.g. of an air cleaner and silencer assembly (14) Fig.1 (not shown), is provided with a valve 18 which is normally spring-biased into its open position. However, when the engine ignition is switched off by switch 32 a solenoid 24 is electrically connected with the engine-driven generator or alternator 30 and is thereby temporarily energized by the decaying electrical energy developed by the altenator as it runs down with the engine. This causes temporary closure of the valve 18 and thereby avoids automatic ignition after the engine has been switched off. The mechanism also prevents unauthorized operation of the engine by circumventing the ignition switch, since once the engine is started in this manner the valve 18 will close.
Patent GB-1467808-A (GB)
Title: Gas burner control system
IPC: F23N5/24
Filed: 1973-11-23
Abstract: 1467808 Ignition and control system for burners RANCO Inc 21 Nov 1974 [23 Nov 1973] 54489/73 Headings F4T and F4F An ignition and control system for a burner 1 having an electrically actuated normally-closed fuel valve 2 comprises a spark igniter 10 connected to a spark generator 8, a switch device 4 controlled by the generator and operated only upon commencement of spark generation to cause opening of the valve, a flame sensor 11 which inhibits operation of the generator upon detection of a flame and a timing circuit which, at a certain time after initiation of spark generation, operates the switch device to cause closure of the valve, but is inhibited from doing so if a flame is detected at the burner. The operation is initiated by a master switch 7 which may be manual or thermostatically controlled. The flame sensor is of the type which is sensitive to change of ionization in the flame. In a first embodiment, a solenoid 3 for the valve is connected in series with the switching device comprising a thyristor Ql. The spark generator comprises a second thyristor Q2 and the trigger line from Q2 to Q1 (marked "ON" in Fig. 1) is the line containing resistance R4 and capacitor C6. The timing circuit comprises resistors R7 and R8 and a capacitor C8 which counts pulses from thyristor Q2 clipped by a Zener diode ZD2 and the variation in resistance is detected across spark gap 10 and fed via line 18 to the spark generator. The thyristor Q2 fires, once capacitor C4 has charged up, and triggers thyristor Q1 which is held in its conducting condition by the voltage maintained across capacitor C1 by virtue of a diode between the capacitor and switch 7. The resistors R1 and R2 and capacitor C7 introduce a small delay (about 6 seconds) between closure of the master switch 7 and the triggering of Q2. Closure of the master switch also initiates operation of the timing circuit. When the capacitor C8 is charged (after about 2 minutes) sufficiently to trigger a third thyristor Q3 which, in turn, reversebiases the thyristor Q1, the thyristor Q1 ceases conducting and allows the valve to release. If, however a flame is present, capacitors C8 and C4 cannot charge up sufficiently to trigger thyristors Q3 and Q2 and the operation of the timing circuit and the spark generation are inhibited. A further embodiment incorporates a voltage doubling circuit to afford greater energy at the spark gap.
Patent GB-1471570-A (GB)
Title: High-voltage monitoring arrangements
IPC: G01R15/14
Filed: 1974-12-18
Abstract: 1471570 Measuring voltage and current SIEMENS AG 18 Dec 1974 [20 Dec 1973] 54803/74 Heading G1U The potential of a conductor 3 within a resin bush 1 is measured by embedding a metal cylinder 4 in the bush concentrically with the conductor 3, so that the conductor and the cylinder form a capacitor, by connecting the capacitor so formed to a second capacitor 5 to form a capacitor divider, and by indicating 11 the resulting voltage across the second capacitor 5. The current in the conductor 3 is also measured using a coreless transformer 18 as described in Specification 1471569.
Patent GB-1206307-A (GB)
Title: Apparatus for smoothing pressure variations in gaseous flow
IPC: F01N1/22
Filed: 1968-11-20
Abstract: 1,206,307. Silencing gaseous flow. RHONEPOULENC S.A. Nov. 20, 1968 [Nov. 21, 1967], No.55151/68. Heading F1B. Apparatus for smoothing pressure variations in gaseous flow comprises a tubular wall having an inlet and an outlet, at least a portion of the wall being elastically deformable under the influence of variations in dynamic pressure, substantially proportional to such variations, and axially spaced apart baffles extending inwardly from the deformable portion of the wall and each leaving a free passage for flow having an area equal to at least half of the cross-sectional area of the deformable portion at the location of such baffle. The I. C. engine silencer shown comprises an elasticity deformable wall 2 in the form of a conical bellows of increasing diameter in the direction of flow and having annular or helical corrugations. Helically wound springy steel wires may be embedded in helical corrugations. The wall 2 carries baffles 6, 7, 8 which may be annular with the internal diameter of successive baffles decreasing in the direction of flow but preferably are semi-circular and staggered as shown. Each baffle closes off not more than half the flow area. The baffles may be prolongations of the edges of certain corrugations or may coincide with the edges of these corrugations. The wall 2 is followed by a cylindrical part 3 and a profiled part 4, which parts may be lined with silicone foam or roughened to maintain an appropriate boundary layer or vibration damping zone. At least the wall 2 but preferably the entire assembly is made of a silicone elastomer, reinforced where necessary. Metals and natural and synthetic rubbers (which may be cloth-covered or reinforced) and fluorinated elastomers may be used. The part 3 may be a metal sleeve. In a pulsation damper for the discharge from a compressor, a cylindrical bellows may be used. To enable the bellows to withstand the internal pressure, the damper may be enclosed in a metal tube in which is set up a pressure of the same order of magnitude as that within the damper.
Patent GB-1377086-A (GB)
Title: Fluid flow control valves
IPC: F16N7/34
Filed: 1971-11-29
Abstract: 1377086 Valves; positive detents C A NORGREN CO 29 Nov 1971 [13 Sept 1971] 55213/71 Headings F2V and F2E A valve comprises an axially and rotatably movable valve member 16 serving to meter lubricant to an air stream, a knob 18 secured to the valve member and carrying splines (42, Fig. 4, not shown), a transparent valve body 12 having splines (44) on a portion (12a) of the body, and a locking ring 20 which urges the splines (42, 44) into engagement with each other when the ring is moved axially downwards to effect a camming action on the lower part of the knob. A filter 62 is provided in an inlet chamber 24.
Patent GB-1163955-A (GB)
Title: Improved method of producing Mineral Fibreboard and the Fibreboard Product
IPC: D04H1/64
Filed: 1966-12-09
Abstract: 1,163,955. Mineral fibreboard. WOOD CONVERSION CO. 9 Dec., 1966 [7 April, 1966], No. 55359/66. Heading D2B. In the manufacture of mineral fibreboard from a slurry of synthetic mineral fibres and raw and/or cooked starch, a quantity of asbestos shortened to colloidal length is included to improve the strength of the product. The asbestos may be chrysotile or amosite, and the slurry may include natural clay, e.g. bentonite, ball clay or kaolin. The slurry may be flocculated by a surface-acting agent such as polyacrylamide to prevent loss of clay in the white water.
Patent GB-1446746-A (GB)
Title: Tape tensioning tools
IPC: B65B13/02
Filed: 1973-11-30
Abstract: 1446746 Strap tensioning tool PAUL HELLERMANN GmbH 30 Nov 1973 [8 Jan 1973] 55631/73 Heading F2G A tool for tensioning a tape around an object and for cutting off surplus tape when a pre-set tension is reached and after the tape has been connected has a tensioning mechanism comprising a pull rod 9 with a recess 10, a slide member 14 movable longitudinally of the rod and carrying a runner or roller 11 which is movable transversely of the rod and is urged against the recessed edge of the rod 9 and a hand lever 4 which draws the pull rod 9 in a first portion of travel and actuates a cutter in a further portion of travel. The tape passes through a slit 6 and is gripped by a gripper 7 on a draw bar 8 linked to the pull rod 9. When the hand lever 4 is rotated towards the handle 2 about a pivot 3, a roller 28 pushes a shift lever 25 to rotate it about a pivot 41 against the force of a return spring 27. The shift lever, pivoted to the slide 14 on pins 24, moves the slide and a tensioning elbow 16 which is pivoted to the slide 15 and carries the runner 11. The runner 11 thus entrains the pull rod 9 by engagement with the recess 10 and moves it to tension the tape. The force with which the runner 11 engages the recess 10 is pre-set by an adjustable compression spring arrangement 17-21 acting against one limb of the elbow 16. When the pre-set tension is reached, after several movements of the lever 4 if necessary, the runner is displaced from the recess 10 and the pull-rod remains in position. An arm 33 is then actuated by a pin 44 in a slot 45 in a control member 32 to operate a knife 35 which cuts off surplus tape. The tape is joined by a lock member automatically and independently of the tool.
Patent GB-1237714-A (GB)
Title: Multiple function pin
IPC: F16B19/02
Filed: 1968-11-26
Abstract: 1,237,714. Gauging dimensions. DAYTON PROGRESS CORP. Nov. 26, 1968 [Dec. 13, 1967], No. 56045/68. Heading G1M. [Also in Division F2] A pin for use in gauging or locating a stack of plates having aligned holes therein comprises a cylindrical body 10 having an outer surface provided with circumferentially spaced projections 11, 12, such projections having surface portions which are arcuately curved to form segments of a circle generally concentric with the axis of the cylindrical body. The pin which may be cut from a metal rod to have two diametrically opposed projections 11, 12 which extend longitudinally of the body and which may be of different circumferential extent.
Patent GB-1404159-A (GB)
Title: Methods and apparatus for measuring the parameters of electrical devices
IPC: G01R31/26
Filed: 1972-12-12
Abstract: 1404159 Measuring transistor parameters INTERNATIONAL BUSINESS MACHINES CORP 12 Dec 1972 [30 Dec 1971] 57239/72 Heading G1U A method of measuring the transmission parameters of a device having two terminals, e.g. a transistor T, Fig. 1, is characterized in that signals are applied to both terminals, the signal at one of the terminals is adjusted (in phase and/or amplitude) so as to simulate a predetermined load (e.g. open or short circuit) at the other terminal, and then both signals are measured. The preferred circuit arrangement for performing the method is shown in Fig. 1. Every item of the arrangement is conventional, including the jig for mounting the transistor T under test, and appropriate types and manufacturers are given in the Specification. The Specification also explains, in detail, how the circuit is initially calibrated and the calculations necessary to derive the required transmission parameters.
Patent GB-1280638-A (GB)
Title: Improvements relating to articulated dump trucks
Inventor: DEARDEN BRIAN BURTON
IPC: B62D12/00
Filed: 1968-12-04
Abstract: 1280638 Articulated vehicles JOHNSON MACHINERY Ltd 13 Nov 1969 [4 Dec 1968] 57460/68 Heading B7H An articulated dump truck includes front and rear chassis parts 10, 12 pivotally interconnected by a slewing ring 20 whose disposition is such as to provide a vertical or substantially vertical steering articulation axis. Ring 20, which may be slightly inclined to the horizontal to give the two parts 10, 12 a longitudinal self-aligning effect, has two parts 18, 22 connected to respective chassis parts. Ball or roller bearings may be provided between the parts 18, 22. The chassis part 10 may also be capable of pivoting about an horizontal axis or substantially horizontal axis afforded by a bar 14 which is either attached to part 10 and rotatable in bearing blocks 16 secured to ring part 18 of which is attached to ring part 18 and on which part 10 is rotatable. Steering may be by an hydraulic ram 24 disposed between the chassis parts 10, 12. Additionally or alternatively a mechanical steering means, which may be servo assisted may be provided. The truck has four-wheel drive.
Patent GB-1207277-A (GB)
Title: Interpolymerization of acrylamide with other monomers
IPC: C08F218/08
Filed: 1968-12-05
Abstract: 1,207,277. Vinyl acetate-acrylamide copolymers. GULF OIL CANADA Ltd. 5 Dec. 1968 [6 Dec., 1967], No. 57810/68. Heading C3P. Vinyl acetate is copolymerized with 2-15% of acrylamide in aqueous emulsion to a product containing 50-70% polymer solids, the acrylamide being dissolved in the vinyl acetate to which is added a solubilizing agent, e.g. a C 1 -C 4  alkanol, formamide, dimethyl formamide, dimethyl acetamide or dimethyl sulphoxide. Batch and continuous processes are described and in one example a terpolymer containing nbutyl acrylate is produced. Hydroperoxide initiators are used in redox combinations, and in all but one example no emulsifier was used, that one employing an oxyethylene-oxypropylene copolymer.
Patent GB-1338570-A (GB)
Title: Heat-sensitive copying materials
IPC: B41M5/30
Filed: 1970-12-07
Abstract: 1338570 Thermographic materials RICOH K K 7 Dec 1970 [6 Dec 1969 (2)] 57912/70 Heading G2C A thermographic material suitable for producing projection slides comprises a transparent support and a coating thereon, the support and the coating each containing reactant(s) which react to give a colour on heating, the support also containing a thermoplastic resin, the material being 10 to 150 microns thick and transmitting at least 50% of light between 400 and 700 mÁ and the weight of the coating being between 0À1 and 1g per square metre. The coating preferably contains a thermoplastic binder. Specified colourforming reactants are (a) saccharides with dehydrating agents e.g. sulphuric acid (b) ferric soaps with tannic or gallic acid, or derivatives of thiosemicarbamide (c) noble metal organic salts with polyhydroxy alcohols or organic reducing agents, (d) lead soaps with thiourea derivatives, (e) heavy metal organic salts with alkaline earth metal sulphides or organic chelating agents or with sodium tetrathionate or thiosulphate or thiourea and (f) resorcinol and nitrose compounds. In the examples, lead stearate in polycarbonate or dimethyl glyoxine in polystyrene are extruded into films and respectively coated with thiourea in ethylcellulose and nickel stearate in ethylcellulose, imagewise exposed to produce slides for overload projection.
Patent GB-1249351-A (GB)
Title: Method for the optional production either of a large-format photograph or of a number of small-format photographs with the same total surface area and apparatus for applying the method
IPC: G03B27/52
Filed: 1968-12-06
Abstract: 1,249,351. Photographic apparatus. ELEKTRO WATT ELEKTRISCHE-UND INDUSTRIELLE UNTERNEHMUNGEN A. G. Dec. 6, 1968 [Dec. 22, 1967], No. 58003/68. Heading G2A. Apparatus which may be coin-feed is adapted for taking a single large photograph or a plurality of smaller ones. As shown, objective lenses 12a, b Fig. 2 the latter having the shorter focal length, are mounted on a rotatable plate 10. For the single photograph, a flap 14 Fig. 1 is raised and plate 10 is rotated to bring lens 12a, and a plane mirror 24 fixed thereto, into position for exposing film 2 to an object (not shown). To take four small photographs, the flap 14 is lowered, plate 10 is rotated to bring the lens 12b, into picturetaking position and the portion of film 2 not covered by flap 14 is exposed to the two images of the object produced by inclined mirrors 25, 26. Film 2 is then advanced and the previously covered portion is also exposed to the two images. Before exposure to the object as described above, film 2 from a magazine 3 is exposed by a lamp 8 through a mask 7 having a transparent portion to provide, or the film 2, a rectangular frame corresponding in size to the size of the single photograph. In the case of the multiple pictures, the film is exposed through a mask 20 having a transparent cross to complete the frame. Exposed film is severed at 18, 19 and fed to a developing station (not shown).
Patent GB-1419946-A (GB)
Title: Disintegrating devices
IPC: B01F7/16
Filed: 1971-12-17
Abstract: 1419946 Comminuting apparatus; immersion mixer SILVERSON MACHINES LTD 14 Dec 1972 [17 Dec 1971] 58880/71 Headings B1C and B2A Comminuting and mixing apparatus comprises a commuting section 1 Fig. 1 comprising a rotor 5 and surrounding stator ring 7 and a mixing section 3 with a rotor 9 formed with four blades 41 cooperating with an apertured stator 11. Both sections are mounted on a common support 15 and driven by a common shaft. The section 1 has a cylindrical shroud 17 which may be a plain or apertured cylinder or be formed by a series of mutually-spaced parallel bars or a mesh. The rotor 5 comprises a circular plate 61 with two blades 63 diametrically opposed. The surrounding stator 7 comprises elements 47 each having a base 49 Fig. 3 fitted into an annular groove 45 in a base ring 43. Each element includes angled cutting surfaces A second embodiment has stator elements 75 integral with a base ring 77, Fig. 5, and a third embodiment has sharper points on elements 81, 83, Fig. 6. The apparatus may be lowered into a tank for grinding large lumps of polymer and mixing the polymer with oil.
Patent GB-1375995-A (GB)
Title: Electron beam apparatus
IPC: H01J37/28
Filed: 1971-12-20
Abstract: 1375995 Thermionic cathodes; electron microscopes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 Dec 1971 [23 Dec 1970] 59006/71 Heading H1D An electron source, e.g. for a scanning electron microscope, comprises a wire 2 which is heated by an energy beam, such as an electron or lazer beam passing through an aperture 34 in an anode 3, the wire being held in a state of tension and being movable in its longitudinal direction between reels 25, 27. Silver blocks 29, 30 support the wire 2 and also conduct heat away. When employed in an electron microscope an elongated exit slit 33 is provided to produce a beam which has a correspondingly elongated cross-section. The movement of wire 2 can be regulated by the operating temperature of wire 2, e.g. by monitoring the non-utilized electrons collected by anode 3.
Patent GB-1413837-A (GB)
Title: Elastomers
IPC: C08K5/105
Filed: 1972-12-22
Abstract: 1413837 Vulcanizing fluoroelastomers E I DU PONT DE NEMOURS & CO 22 Dec 1972 [27 Dec 1971 28 Sept 1972] 59432/72 Heading C3P A vulcanizable fluoroelastomer composition comprises (A) a copolymer of vinylidene fluoride and at least one other fluorinated monomer and (B) an ester of an aromatic hydroxyl compound as vulcanization agent. The composition may also contain a metal oxide or hydroxide optionally mixed with a weak acid salt, and a vulcanization accelerator, including quaternary phosphorus, arsenic, antimony or aluminium compounds, triaryl phosphoranes, guanidines and amidines. In examples the polymer is a vinylidene fluoride/hexafluoropropylene copolymer; the vulcanization agent is the diacetate of hexafluoroisopropylidene-bis-(4-hydroxy benzene), 4,41 - sulphonyl - diphenol or hydroquinone; the accelerator is benzyltriphenylphosphonium bromide and the compositions also include carbon black, calcium hydroxide and magnesium oxide. The compositions are cured by heating.
Patent GB-1218476-A (GB)
Title: Preparation of citric acid by a fermentaion process
IPC: C12P7/48
Filed: 1968-12-18
Abstract: 1,218,476. Citric acid by fermentation. SHIBAURA SEITO K.K., and H. IIZUKA. 18 Dec., 1968 [19 Dec., 1967], No. 60148/68. Heading C2C. Citric acid and/or salts thereof are produced by a fermentation method wherein a strain of Candida oleophila is cultured under aerobic conditions in a nutrient medium therefor containing an assimilable carbohydrate and, if desired, a basic agent serving at least partially to neutralize the citric acid produced. The culture is preferably performed at 22-33‹ C. and at a pH 4À0-8À0 for a period of 96 hours. The carbohydrate present may be a monosaccharide e.g. glucose or fructose, an aligosaccharide or a starch hydrolysate. Hight-test molasses, beet sugar blackstrap molasses, cane sugar blackstrap molasses or raw sugar are suitable. A nitrogen source such as an ammonium salt, ammonia, urea, peptone, meat extract, yeast extract, corn steep liquor, fish meal or soybean cake may also be present. The culture preferably has as basic agent calcium carbonate. In the examples glucose and cane sugar blackstrap molasses are converted to citric acid.
Patent GB-1246585-A (GB)
Title: Mineral oil compositions containing ethylene copolymers
IPC: C10N30/00
Filed: 1969-12-11
Abstract: 1,246,585. Olefin copolymers. E. I. DU PONT DE NEMOURS & CO. 11 Dec., 1969 [19 Dec., 1968; 25 Nov., 1969], No. 60492/69. Heading C3P. [Also in Division C5] An oil-soluble, substantially linear, hydrocarbon copolymer containing, on a weight basis, 25 to 55% polymerized ethylene units and 75 to 45% polymerized comonomer units, the comonomer being a terminally unsaturated C 3 - C 12  straight chain monoolefin, a C 9 -C 10  #- phenyl-1-alkene, 2-norbornene, a terminally unsaturated C 5 -C 8  non-conjugated diolefin, dicyclopentadiene, 5-methylene-2-norbornene or a mixture of two or more thereof, the copolymer having a pendent index of 18 to 33, an average pendent size not exceeding 10 carbon atoms, an average chain length of 2700 to 8800 carbon atoms, an inherent viscosity of 0À7 to 1À8 as measured on a 0À1 weight per cent solution in tetrachloroethylene at 30 C. is used as a viscosity index improver. Specific examples describe the preparation of ethylene/propylene, ethylene/propylene/1,4-hexadiene, and ethylene/ hexene copolymers.
Patent GB-1280950-A (GB)
Title: Improvements in or relating to liquid-cooled multi-cylinder internal combustion engines
Inventor: JANTSCH ERNST
IPC: F02F1/14
Filed: 1970-12-24
Abstract: 1280950 Cooling IC engines MOTORENWERK CUNEWALDE VEB 24 Dec 1970 61357/70 Heading F1B A cooling-liquid channel 2 cast in the cylinder block 1 is open towards the cylinder head and continuously decreases in cross-sectional area from the inlet 4. The cooling liquid flows to a chamber around the cylinders 6 through passages 5, two for each cylinder, and to the cylinder head.
Patent GB-1280170-A (GB)
Title: A facing or cladding panel for facades
IPC: E04F13/18
Filed: 1969-12-17
Abstract: 1280170 Wall facing DEUTSCHE SOLVAY-WERKE GmbH 17 Dec 1969 [20 Dec 1968] 61542/69 Heading E1B A facing panel comprises a hanger portion 1 with a part 2 offset from its free end, and a panel portion with a clip 3 on its rear face. In use the panel is secured to a wall by screws through the hanger portion 1, the rear faces of offset part 2 and of clips 3 bearing against the wall. A second panel is then mounted with its lowermost clip 3 engaged over the free end of the hanger portion of the first panel, so that the lowermost panel portion of the second panel covers the hanger portion of the first.