baber/WOPTO huggingface dataset:
Patent GB-1136761-A (GB)
Title: Improvements relating to fuel control devices for internal combustion engines
IPC: F02B11/02
Filed: 1964-12-15
Abstract: 1,136,761. Engine stop gear; supplying fuel. H.A. SAPP and W.A. STAINSBY. Dec. 10, 1965 [Dec.15, 1964], No.51065/64. Headings F1B and F1K. A control device, insertable in the fuel supply means of an internal-combustion engine, includes a fuel valve 35 and abutment means extending therefrom to a diaphragm sealed chamber, resilient means 22 acting upon the valve to maintain it in engagement with the diaphragm 16 of the chamber through the abutment means. The chamber space to that side of the diaphragm further from the valve is connectible to the engine lubrication pressure, to provide a force acting against the resilient means and urging the fuel valve to an open position and the space on the other side of the diaphragm has a vent connection 13 permitting free communication to the interior of the chamber either of fuel from the outlet side of the valve or of atmospheric pressure. In an embodiment (not shown) the valve is a piston comprising a duct adapted to afford passage for fuel from an inlet port to an outlet port. The invention is applicable to petrol engines and diesel engines. In the case of a diesel engine the device may be associated with a priming reservoir. The device is also applicable to gas engines.
Patent GB-1285294-A (GB)
Title: Marking instrument
IPC: A45D34/04
Filed: 1970-10-27
Abstract: 1285294 Marking instruments G SCHWANHAUSSER and O SCHWANHAUSSER [trading as SCHWAN - BLEISTIFT - FABRIK SCHWANHAUSSER & CO] 27 Oct 1970 [19 Nov 1969] 51071/70 Heading B8P A marking instrument comprises a marking tip 2, having capillary spaces therein and being carried by a handle 1, and a sheath 3 containing a storage wick 4 which contacts the tip 2 when the sheath and handle are engaged. The storage wick 4 has a recess corresponding in shape to the tip 2 and is spring urged towards an annular abutment 6 in the sheath by a compression spring 5 supported by a closure cap 7 threadedly mounted in the sheath to vary the compression force. The marking tip may comprise a synthetic resin impregnated bundle of fibres or a body of foam material.
Patent GB-1452748-A (GB)
Title: Wedge for gripping a multi-ply cable
IPC: E04C/
Filed: 1973-11-05
Abstract: 1452748 Clamps for cables MANUFACTURAS DE ACERO Y CAUCHO SA 5 Nov 1973 [6 Nov 1972] 51183/73 Heading D1T A frustoconical wedge Fig. 1 that is split longitudinally into two or more parts a, a' and is formed with a helically grooved bore 4, is characterized in that each division 3 between the parts a, a' extends helically with the same pitch as that of the helical grooves and divides the wedge along lines that extend along the bottom of a helical groove; the wedge further having a circumferential recess 7 in its outer surface adjacent its larger end to receive a retaining ring for maintaining the parts in the assembled state. The helically grooved surface of the bore 4 may be toothed or provided with a covering of abrasive material.
Patent GB-1459885-A (GB)
Title: Direct current power converter
IPC: H02M3/338
Filed: 1974-11-27
Abstract: 1459885 DC-DC converters; battery charging systems ELTRA CORP 27 Nov 1974 [27 Nov 1973] 51474/74 Headings H2F and H2H [Also in Division H3] A D.C.-D.C. converter comprises four transistors Q1 ... Q4 connected in a bridge oscillator circuit across D.C. input terminals 11, 12 and having feedback via a saturable transformer T2 and output derived from a power transformer T1. The secondary voltage of T1 is rectified at 32, 33, the D.C. output voltage being regulated by deactivating the transistor oscillator when the output voltage rises above a predetermined value and activating said oscillator when the voltage drops below a second predetermined value. The invention is applicable to use in an electrically powered vehicle whose main battery may operate at voltages within the range 72- 156 v. and provides means for charging a 12 v. battery for lights, wipers &c. The bridge transistor oscillator has a starting circuit 26, 27, 21, the pairs of transistors Q2, Q4 and Q1, Q3 conducting alternately in each half cycle until T2 becomes saturated when the drive to the conducting transistors ceases, and the resulting collapse of flux provides turn-on drive for the other pair of transistors and turn-off drive for the previously conducting pair. The rectified D.C. output from diodes 32, 33 is monitored by a Schmitt trigger 39 comprising a pair of NAND gates which receive their power from a regulating Zener diode 48. When the voltage of the 12 v. battery connected across output terminals 31, 34 rises above a level set by potentiometer 38, the trigger 39 changes state, turning off transistor 35, releasing relay 29a and opening contacts 29 so as to deactivate the bridge transistor oscillator. The reverse action occurs when the battery voltage falls below a second value lower than the first value by an amount determined by diode 46.
Patent GB-1419664-A (GB)
Title: Disc mill
IPC: B02C7/08
Filed: 1973-11-06
Abstract: 1419664 Disc mills KRIMA MASKIN FABRIK AB 6 Nov 1973 [7 Nov 1972] 51563/ 73 Heading B2A A disc mill has a feed channel 13 which has continuously curved inner and outer surfaces (as seen in sections) and spiral vanes secured either to the inner or outer surface which is rotatable, the vanes 19 protruding into the feed channel. A screw 11 assists feed. The vanes 19 extend as tongues 20 into a precrushing zone. Both discs 17, 18 may be rotatable at different speeds or in different directions. The discs have interacting radial and/or annular bars 22.
Patent GB-1062900-A (GB)
Title: A process for the production of piperidine or its alkyl homologues by the catalytic hydrogenation of pyridine or its alkyl homologues
Inventor: SMEYKAL KARL
IPC: B01J23/70
Filed: 1965-12-06
Abstract: Piperidine and alkyl piperidines are prepared from pyridine and alkyl pyridines by hydrogenation with a molar excess of hydrogen over pyridine base at 100 DEG  to 200 DEG  C. and up to 200 At. gauge pressure in the presence of a catalyst or catalysts containing at least 30% by weight of metallic nickel on a carrier of chromium oxide and/or activated alumina.  The pyridine or alkyl pyridine may be passed together with hydrogen through a primary reactor filled with used but hydrogenation-inert catalysts of the same kind and from the same hydrogenation process as the subsequent hydrogenation prior to hydrogenation to extend the catalyst life.
Patent GB-1284398-A (GB)
Title: Manufacture of photographic materials
Inventor: PARKIN ERNEST MALCOLM LOUDON
IPC: G03C1/74
Filed: 1968-10-31
Abstract: 1284398 Coating webs KODAK Ltd 30 Oct 1969 [31 Oct 1968] 51581/68 Heading B2L [Also in Division Dl] In the coating of webs with photographic emulsion, the emulsion is stored in a heated tank which holds enough emulsion for several hours operation, at a temperature insufficiently high to cause heat-deterioration of the emulsion, and is passed to the web-coating device through a heat-exchanger which heats the emulsion without evaporation to a higher temperature which would be sufficient to cause heat-deterioration if the emulsion had been stored at this temperature. The heat-exchanger may be controlled in response to the temperature of the incoming emulsion and may be arranged to stop heating when the emulsion is not flowing. The coating device may be heated to maintain emulsion temperature. The further heating may be effected by means of a heated pipe around the supply pipe, or by addition of an additional heated component to the emulsion just prior to coating. In an example, paper is coated at 54‹C with a silver chloro-iodide emulsion which has been stored at 35‹C.
Patent GB-1248669-A (GB)
Title: Method of making apertures and/or slots in electrically conductive workpieces by spark erosion
Inventor: KHOLODNOV EVGENY VASILIEVICH
IPC: B23H7/02
Filed: 1969-10-22
Abstract: 1,248,669. Spark erosion. E. V. KHOLODNOV. 22 Oct., 1969, No. 51664/69. Heading B3V. In a spark erosion method, an additional electrode 4 is positioned initially between the workpiece 1 and an end face of a rotating electrode 2 for maintaining a desired shape of a work-performing portion 6 of the electrode 2. As the electrode 2 is fed towards the workpiece 1, the former is eroded by the electrode 4 to maintain the circular shape of the portion 6. The electrode 4 is moved through guides 7, 8 in a direction S 2  to compensate for its wear. Apertures of varying diameter or slots of varying width may be formed in the workpiece 1 by moving the electrode 4 in a direction S 3  to vary the diameter of the portion 6. The electrode 4 may have a diameter of 20-30 microns and may be positioned 50-100 microns from the workpiece 1.
Patent GB-1454288-A (GB)
Title: Shredding machines
IPC: B02C18/18
Filed: 1973-11-07
Abstract: 1454288 Shredding apparatus METAL BOX Ltd 7 Nov 1974 [7 Nov 1973] 51705/73 Heading B2A Shredding apparatus capable of reducing large tyres comprises contra-rotatable parallel cutter shafts 14, Fig. 3, supporting disc-like cutter members 21, 22 arranged in assemblies 19, 20 of cooperating pairs. The cutting edges at the periphery 30 of each cutter element 24, are such that when the assemblies 19, 20 are contra-rotated at the same speed the "included angle" A between two cooperating cutters is small enough to cause positive cutting between them. This "included angle" is the angle at any point on the periphery of a first of the cutter elements between the tangent to the periphery at that point, and the tangent to the periphery of the second of the cutter elements at a point which, during contra-rotation of the cutter assemblies, meets the said point on the first cutter element, whereby the two said points instantaneously define the rearward extremity of overlapping portions of the two respective cutter elements  The cutters may have a six point profile as in Fig. 3 or a 3-point profile Fig. 8. The apparatus includes guides 55 to guide material away from the cutting zone 23. Automatic reversal to clear jams and/or resilient mounting guides 55 is provided. A pusher is included for urging tyres into the apparatus. The modified apparatus with 3-point cutters includes extra bearing supports 82, 83 Fig. 7, and inlet guide assemblies 90 and top guides 91, Fig. 6. In alternative embodiments the cutter may have four or five teeth. In all cases material can recirculate if desired, passing more than once through the cutter assemblies.
Patent GB-521878-A (GB)
Abstract: 521,878. Ignition systems. LUCAS, Ltd., J., and WATSON, E. A. Nov. 30, 1938, No. 34863. [Class 7 (iv)] Inductances bare connected in shunt with a direct-current generator a with alternately operated interrupters c between the generator and each inductance. The primary winding e of a transformer is connected across the interrupters, and the secondary f to the distributer and the engine plugs. Specification 313,296, [Class 7 (iv)], is referred to.
Patent GB-1373100-A (GB)
Title: Heat-recoverable members
IPC: B29C65/68
Filed: 1970-11-03
Abstract: 1373100 Pipe couplings RAYCHEM Ltd 29 Oct 1971 [3 Nov 1970] 52221/70 Heading F2G A shrinkable sleeve 12 is engaged with a rigid support tube 11 to form an article, such as a junction-piece, in which a pipe end, introduced between the sleeve and the tube, may be gripped. The tube 11 may be of copper, stainless steel or plastics and may be tapered. The sleeve 12 may be of heat shrinkable polythene or metal. A high density polythene adhesive 14 containing a cross-linking agent is used to connect a polythene pipe to a polythene sleeve. The sleeve is engaged with the tube 11 by preshrinking a centre portion 13. In the junctionpieces (Figs. 2 and 3, not shown) the sleeve and the tube are not co-extensive throughout.
Patent GB-1332809-A (GB)
Title: Method and apparatus for the cooling of soot-containing gases
IPC: B01D51/10
Filed: 1970-11-09
Abstract: 1332809 Gas cooling installations SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 9 Nov 1970 [11 Nov 1969] 53149/70 Heading F4S Soot-containing gases obtained by the partial combustion of hydrocarbons, are cooled to a temperature not exceeding 1200 C. at a mass velocity of at least 100 kg/m<SP>2</SP>/sec., in a straight tube length before being further cooled by passing them through a helically coiled tube formed as a continuation of the straight tube length, In a preferred form of heat exchanger shown for cooling the gases by water, a casing 13 contains a plurality of the straight tubes 1, 2 each continuing into a helical tube length 6, 7 respectively. Gas enters the casing at 4 and leaves at 8, 9. Cooling water enters the casing through a tubular element 10 ending in a nozzle 11 from which it is diverted upwardly over the tubes to a casing outlet 12. Transverse baffles 27-30 shown only in Fig. 3, may be utilized in the straight tube zone to direct the coolant over the tubes.
Patent GB-1302428-A (GB)
IPC: A61C1/06
Filed: 1970-11-09
Abstract: 1302428 Electric couplings VYZKUMNY USTAV ZDRAVOTNICKE TECHNIKY 9 Nov 1970 [11 Nov 1969] 53161/70 Heading H2E The electric motor 1 in a dental drill is coupled to a flexible supply hose 5 by inserting a cylindrical first extension member 7 into a cylindrical second extension member 32, the first member being free to rotate inside the other while electrical contact is maintained through a slip ring 13. Relative axial movement of the members is prevented by confining a radial pin 24 on the inner member in a circumferential groove 25 in the outer member. Raising the end of a spring biased lever 3 allows the pin to be withdrawn through the gap. Electrical leads 17 are connected to spring biased pins 16, one being axial and the other offset to engage the axial contact 12 and the slip ring 13 in the motormember 30. Pipes 33 carry air and water into a mixing chamber 22 and hence to an external pipe 23, and other ducts (18, Fig. 3, not shown) carry compressed air through the space 19 and holes 20 to cool the electric motor.
Patent GB-1334695-A (GB)
Title: Phenolic resin compositions and a method for the preparation thereof
IPC: C08L61/10
Filed: 1970-11-09
Abstract: 1334695 Phenolic resin compositions; foundry mould compositions UNION CARBIDE CORP 9 Nov 1970 [10 Nov 1969] 53262/70 Headings C3R and C3N A composition containing sand coated with a phenolic resin is made by adding a Group II metal hydroxide and/or oxide, such as those of Be, Ba, Cd, Ca, Mg and Zn, to a liquid phenolic novolac resin to form a solution, then adding sand and a monobasic fatty acid with the result that the sand is coated with the phenolic resin and a Group II metal salt is precipitated and dispersed throughout the resultant composition. Optional additives include a curing agent such as hexamethylenetetramine, and fillers such as asbestos, wollastonite, mica, silica, graphite, woodflour, cotton flock, polyamide fibres, polyester fibres, graphite cloth or fibres, iron and organic dyes such as nigrosine. Suitable phenols which can be condensed with an aldehyde include those of the general formula where x = 1, 2, R<SP>1</SP> is a C 1-6  alkyl or alkoxy radical or halogen, and wherein at least 3 positions other than meta to the hydroxyl group are unsubstituted; and phenols of the general formula where Z is S, O or an alkylidene or alkylene radical. Suitable aldehydes include formaldehyde and furfural. Suitable fatty acids are those of the formula (C n H 2n+1 )-COOH where n = 10-32, and those of the formula (C n H 2n-1 )- COOH where n = 15-21, as well as linoleic and linolinic acids. In Example 1 a composition is made from a liquid phenol-formaldehyde novolac resin, calcium hydroxide, silica sand, stearic acid to which is added water and hexamethylenetetramine. Uses.-Foundry shell moulds.
Patent GB-1479339-A (GB)
Title: Paperboard container
IPC: B65D5/06
Filed: 1974-12-16
Abstract: 1479339 Cartons for liquids EX-CELL-O CORP 16 Dec 1974 [18 Dec 1973] 54214/74 Heading B8P A coated paperboard container folded to rectangular tubular form from the blank shown in Fig. 1 has a pouring spout formed of panels 42, 63, 64, 68, 69 and a flat top formed by closure panels 47, 60. The spout is released by first tearing away a strip 53 from the outer top panel. Panels 68, 69 and 78, 79 are sealed to panels 51, 62 below the top edges of panels 68, 69, 78, 79 preferably by sonic sealing to provide a liquid-tight central sealing rib 82 and subsequently the tear strip 53 and adjacent portion 54 and folded down on the container top and the portion 54 is sealed, preferably by heat sealing, to closure panel 60. In modifications, the tear strip may extend only part-way across the width of the container and may or may not be removed completely from the opened container. Means to facilitate grasping the end of the tear strip may be provided.
Patent GB-1528918-A (GB)
Title: Device for use in the testing of fluid samples on microscope slides
IPC: G02B21/34
Filed: 1974-12-17
Abstract: 1528918 Microscopic sample preparation NATIONAL RESEARCH DEVELOPMENT CORP 4 Dec 1975 [17 Dec 1974] 54438/74 Heading G2J [Also in Division C6] A device for producing a plurality of discrete samples on a microscope slide comprises a support 1 for the slide 4, a gasket 7 provided with a plurality of holes 9, and a cover-plate 10 for urging the gasket into sealing engagement with the slide surface whereby each of the holes of the gasket becomes a sample well having a portion of the slide as its base. In the embodiment shown the support 1 acommodates five slides 4, the edges of the slides being located by a template 3. The cover-plate 10 is apertured in register with the holes in the gasket 7, and is urged down by nuts 11 engaged on studs 2 secured to the support 1. Apertures 6 allow examination of samples (e.g. cell cultures) in the wells. When the culture is ready it is prepared (e.g. by immunofluorescence and staining techniques) and the apparatus dismantled to allow the slides to be microscopically examined in the usual way. The gasket is preferably of autoclavable material (e.g. silicone rubber) and may be coated with non-stick agent (e.g. P.T.F.E.). The remainder of the apparatus may be of stainless steel.
Patent GB-1509710-A (GB)
Title: Heat exchanger for condensing and evaporating fluids
IPC: F28D7/02
Filed: 1975-05-23
Abstract: 1509710 Heat exchanger; refrigeration apparatus A S CROMARTY 23 May 1975 [17 Dec 1974] 54546/74 Headings F4S and F4H A heat exchanger (e.g. for use as an evaporator or condenser in a vapour compression refrigeration plant) comprises a thermally conductive tube (e.g. of metal) formed as a helically wound coil which is flattened so that consecutive turns of the coil overlap and contact each other, the overlapping turns being secured to each other at their points of contact so as to make a rigid self-supporting construction. The figures show an example of such a coil. Fig. 2 shows a side view of the coil shown in Fig. 1. In various alternatives, the turns in the tube are regularly or irregularly spaced; a plurality of the tubes are connected in series or in parallel; the tube with the secured turns is twisted or bent; the tube has a secondary heat exchange surface; the tube may be inserted in a narrow non- cylindrical vessel.
Patent GB-1138794-A (GB)
Title: Electrical conductors having an extruded insulation coating of polyethylene terephthalate
IPC: B29C48/05
Filed: 1967-12-01
Abstract: 1,138,794. Cables. ALGEMENE KUNSTZIJDE UNIE N.V. 1 Dec., 1967 [1 Dec., 1966], No. 54878/67. Heading H1A. The extruded polyethylene terephthalate coating on an electrical conductor has a relative viscosity of at least 1À70 and a crystallinity of at least 15%. The coating is applied using molten polyethylene terephthalate having a relative viscosity of at least 1À80 containing 0À1 to 5% by weight of a crystallization promoter, cooling the coated conductor preferably not below the crystallization tempeature, and exposing the coating to a temperature of at least 100 C. until the desired crystallinity is achieved. The promoter may be inter alia a ketone, amine, or halogenated hydrocarbon, e.g. benzophenone, diphenylamine or tetraohloroethane, or tetralin or benzyl alcohol. The rate of crystallization may be increased by the addition of 0À001 to 0À5% of an undissolved solid substance having a particle size less than 3 microns, e.g. metal oxides such as magnesium oxide, finely divided metals such as copper or antimony, alkaline earth metal salts such as calcium carbonate and alkali metal salts of organic acids. As shown, conductor 2, which may already have an insulating coating of e.g. P.V.C., polythene, polyvinylidene fluoride, polysulphone, polyphenylene oxide, rubber or glass, is passed from supply reel 4 to heater 1 and extruder 8, and the coated conductor, air cooled in zone A, is passed through heating chamber 56, supplied with e.g. superheated steam at about 170 C. after crystallization. The coated conductor is cooled in chamber 16.
Patent GB-1096500-A (GB)
Title: Improvements in arc welding electrodes
Inventor: WILLIAMS MERVYN KENFIG
IPC: B23K35/30
Filed: 1965-12-29
Abstract: A manual arc welding electrode for welding cast iron comprises a ferrous core wire and a lime fluoride type flux containing C, Si, Mn, Mg and Al, the electrode containing 2.5-7.5% Si, 0.1-0.4% Mg, 0.2-5% Al and 0.5-2.2% Mn.  The flux is of low hydrogen type and may contain 0-4% Ni by weight of the electrode.  A silver steel core wire of composition .0.05-0.15%.C .0.3% max.Si .0.25-0.45.Mn .0.5% max.Cr .0.05% max.S .0.05% max.P .balance.Fe is coated in the proportion of 3 parts coating to 10 parts by weight core with the following flux compositions .10-30%.carbon black or graphite .10-30%.carborundum .18-40%.limestone .12-25%.calcium fluoride .4-13%.magnesium/aluminium ..(10% Mg) .2- 9%.ferro-manganese (50% Mn) .0-12%.nickel .0.5- 4%.extrusion aids and forms the following weld deposit .2.5-4.5%.C .2-4%.Si .0.4-1.1%.Mn .0-4%.Ni .balance.Fe The work is pre-heated to 450-600 DEG C. and postheated at 650 DEG C for 2 hours.
Patent GB-1357219-A (GB)
Title: Apparatus for feeding flat blanks from a magazine
IPC: B31B3/44
Filed: 1971-07-13
Abstract: 1357219 Feeding sheets EMHART CORP 13 July 1971 [17 July 1970] 55134/73 Divided out of 1357218 Heading B8R Blanks B separated from the bottom of a pile by a vacuum cup 80 oscillated on an arm 98 between a pile engaging position and a delivery position are presented at the delivery position to a continuously driven transport roller 108, whereupon a back-up roller 106 carried on crank arm 104, pivoted about the axis of roller 108, is brought into a blank engaging position to feed the blank on to conveyer belts 118, Fig. 5. The back-up roller is periodically brought into a blank-engaging position by a cam 88 which acts on the other arm 102 of the crank. Once on conveyer belts 118 the blanks are guided between sprung side plates 132 up to fixed end stops 120. End portions 122 of the plates are turned inwardly to deform the side edges of the blank to prevent the latter from bouncing off the end stops. Screws 134 may be provided for adjusting the inwardly turned portions of plates 132. The blank feeding mechanism may form part of the tray-forming apparatus described in U.K. Specification 1,357,218 (Division B5).