baber/WOPTO huggingface dataset:
Patent GB-993595-A (GB)
Title: 3h pyrimido-[5,4-c]-1,2,5-oxadiazine derivatives
Inventor: GOLDNER HERBERT
IPC: C07D498/04
Filed: 1963-03-26
Abstract: The invention comprises 3H - pyrimido-[5,4-c]-1,2,5-oxadiazines of the formula <FORM:0993595/C2/1> wherein R1 and R2, which may be the same or different, represent hydrogen atoms or straight or branched chain alkyl radicals and R3 and R4, which may be the same or different, are alkyl radicals or R3 and R4 may together form a cyclic radical and the preparation thereof by reaction of a compound of the formula <FORM:0993595/C2/2> with nitrous acid or an ester thereof, preferably at an elevated temperature or by a modification of the above process in which a 4-aminouracil of the formula <FORM:0993595/C2/3> is nitrosated with excess nitrosation agent to give the 5-nitrose compound which without isolation is cyclized by the action of excess nitrosation agent.  1,3 - Dimethyl - 8,8 - pentamethylene - 8H - xanthine - 7 - N - oxide is formed as an intermediate by the action of isoamyl nitrite on 1,3 - dimethyl - 4 - cyclohexylamino - 5 - nitrouracil or on 1,3-dimethyl-4-cyclohexylaminouracil.  5-Nitrosouracils of the Formula II where stable may be prepared by nitrosation of uracils of the Formula III.  Uracils of the Formula III may be prepared by reaction of the appropriately 1,3-substituted 4-chlorouracils with amines of the formula <FORM:0993595/C2/4> or by transemination of the appropriately substituted 4-aminouracils with amine hydrochlorides of the formula <FORM:0993595/C2/5>
Patent GB-855972-A (GB)
Title: Improvements in and relating to microphones
Inventor: HARWOOD HUGH DUDLEY
IPC: H04R1/08
Filed: 1958-04-15
Abstract: 855,972. Microphones. BRITISH BROADCASTING CORPORATION. April 8, 1959 [April 15, 1958], No. 12011/58. Class 40 (4). A spherical wind-shield for a microphone comprises two layers 12 of 125 mesh 42 S.W.G. gauze and a central lining 13 of 170 mesh 46 S.W.G. gauze. The relatively high-flow resistance of the central lining 13 reduces wind noise in the moving-coil pressure-type microphone 10, which noise, in the absence of the shield, is greatest when the direction of the wind is at right angles to the microphone axis 11.
Patent GB-653344-A (GB)
Title: Improvements in or relating to apparatus for filling receptacles with liquids
IPC: B67C3/16
Filed: 1948-05-03
Abstract: 653,344. Bottles, filling. CHERRY-BURRELL CORPORATION. May 3, 1948, No.  12075. Convention date, Oct. 21, 1947. [Class 125(ii)] A valve for filling containers, e.g. milk bottles, from a reservoir comprises a tubular valve stem 18, removably mounted in an opening 11 in the reservoir bottom, and having a valve head 22 which is sealed by a vertically movable e sleeve valve element 23 pressed downwardly by a resilient bellows 25 which conducts the milk to the bottle when the sleeve 23 is raised by upward pressure of the bottle mouth against a gasket 42. Venting is controlled by a valve 35 which, by the action of a spring 39, seals the end of a vent tube 34, slidable in the valve stem 18, except when the vent tube is raised from the valve 35 by rods 30 which move upwardly with, and guide, the sleeve 23 and abut against a flange 41 on the vent tube, the air from the bottle then passing through flute 36 cut in the underside of the valve 22. The underside of the gasket 42 is formed with indentations and slightly raised ribs 43 and is deformable under the pressure of the bottle to form an effective seal. When the pressure is released, however, the ribs resume their original shape and move the bottle mouth away from the surfaces of the indentations to provide an air bleed into the bottle after both the valves 22, 35 are closed. The valve stem 18 is'supported in the opening 11 by a spider 10 having upper and lower bearing parts 13, 14 which embrace enlargements on the  stem 18 and are joined by vertical ribs. .Lugs 17 on the part 14 engage the underside of the opening 11 and the upper part 13 rests upon a spring clip 12 which straddles the opening 11 and snaps into a groove 20 formed in the stem 18. The lower part of the stem 18 is provided with ,a deflector 32, shaped as a triangle with its apex upwards, and a centralizing lug 33 diametrically opposed to the deflector. The milk is thus discharged from the side of the valve opposite to the deflector. A plurality of the valves are spaced circularly  around the bottom of the reservoir which is provided with means for maintaining a uniform milk level, and a desired pressure or vacuum above the surface, of the milk. Specification 646,470 is referred to.
Patent GB-252167-A (GB)
Title: Method of transmitting electric charges through a gaseous medium
IPC: G08C23/00
Filed: 1926-05-11
Abstract: 252,167. Levy, L. May 14, 1925, [Convention date]. Converting alternating and direct currents.-A train of sound waves is set up inside a spiked barrel 1, Fig. 3, preferably at a frequency of 10,000 cycles per second, by means of a sparkgap 3, 4 fed with alternating current of that frequency, the spark being quenched magnetically. The barrel is maintained at a steady or alternating high potential relative to the earth by means of a transformer 6, which may be associated with rectifiers 12, 13. It is stated that electric charges are transferred from the charged metallic spikes inside the barrel to the molecules of air and are thus propagated with the compression wave at a velocity of the order of 300 metres per second. By applying a grid 23 and plate 24, as shown in Fig. 3, the arrangement may be used to rectify alternating currents, a control voltage being applied across the points 27, 28.
Patent GB-604422-A (GB)
Title: Yarn winding machine
IPC: B65H54/14
Filed: 1944-09-28
Abstract: 604,422. Winding yarn. CLARK, D. M. (Abbott Machine Co.). Sept. 28, 1944, No. 12180/47. Divided out of 604,354. Drawings to Specification. [Class 120(iii)] [Also in Group II] A yarn winding, machine comprises bobbin supplying mechanism, including a hopper adapted to receive empty bobbins in a mixed up state, and a bobbin-taking element movable within the interior of the hopper and through a mass of bobbins therein, a face of the element which faces in the direction of such motion having a recess wide enough to receive the body portion of a bobbin but insufficient in width to receive the enlarged base portion of a bobbin. The 'taking element preferably moves vertically through the mass of bobbins and has its upper recessed face inclined to the horizontal so that bobbins taken from the masss slide laterally therealong, supported by their enlarged base portions. The invention is particularly described as applied to the machine described in Specification 604,354. Specification 522,664 also is referred to.
Patent GB-1426427-A (GB)
Title: Kettle
IPC: A47J27/21
Filed: 1972-03-16
Abstract: 1426427 Kettles HOOVER Ltd 14 March 1973 [16 March 1972] 12403/72 Heading A4A A kettle of the lidless spout-filling type, comprises a body formed by an upper plastics moulding 20 and a stainless steel lower body portion 10 in which an electric heating element 14 is mounted, a pouring/filling spout 22 afforded by the body, bi-metallic control means for de-energizing the heating element, the control means being responsive to the presence of steam which is conveyed to the control means through a tube 18 having its upper end above the overflow level of the spout, and a generally tubular baffle 40 depending from the moulding 20, the baffle being provided with two lateral openings 68 and a rear slot 51 which enable steam to pass from within the kettle to the spout. The baffle 40 ensures that sufficient steam pressure is maintained in the kettle to cause steam to be conveyed through the tube 18 to the control means. The baffle 40 is substantially rectangular in plan and has flanges 41 secured to ribs (60), Fig.4 (not shown), depending from the moulding 20. The ribs (60) and further ribs (61), Fig. 4 (not shown), form steam guides which produce converging flows of steam from the two lateral openings 68 which combine with the flow of steam from the rear slot 51. Recesses 56 and an aperture 76 formed in the baffle assist circulation and agitation of the water. The baffle is provided with level-indicating tongues 53 and 55. The head 13 of the heating element 14 has a drain passage permitting the escape of condensed steam.
Patent GB-406374-A (GB)
Title: Resilient coupling or cushioning devices
IPC: F16D3/82
Filed: 1933-04-12
Abstract: 406,374. Flexible - - unjointed hinges. FORREST, P. W., Vine Terrace, Shields Road, Motherwell, Lanarkshire, and STEPHEN, J. H., 1783, Shettleston Road, Shettleston, Glasgow. April 12, 1933, No. 12469/32. [Class 65 (ii).] A flexible coupling or cushioning device for coupling co-axial shafts or pipes and applicable to motor-vehicle spring-shackles and shockabsorbers, comprises a resilient annular tyre 7 secured to the cylindrical-based, recessed rim 6 of a wheel 4 secured to one shaft 5 and in frictional driving-contact with a laterallycurved annular wall 3 projecting from a platemember 2 secured to the other shaft 1, the contact extending over the entire curved wall 3 from A to B over an arc of one and a half quadrants or more. In the vehicle spring- shackle shown in Fig. 5, the plate 2 is secured to the vehicle-body and the wheel 4 is secured to a pin 35 connected with the spring-shackle bolt 33 by a bracket 34. The plate 2 may be carried by the vehicle-axle and the bracket 34 be supported by a spring fixed to one of the dumb-irons. Instead of the screwed rimflange shown, the rim 6 may have integral side-flanges and be in two halves, checked into each other and secured together by axial bolts, or both the side-flanges may be separate from the rim-base, the tyre-beads being bolted between the rim-base and the side-flanges by bolts which pass through the flanges and beads and under the rim-base. The tyres shown are pneumatic and are inflated through a valve 8. One form makes use of a pneumatic tube without a cover and externally of hexagonal crosssection, the inner and outer coupled members both having one-piece tyre-engaging surfaces of semi-hexagonal cross-section. The curved outer wall 3 may be formed with holes which may be filled with rubber.
Patent GB-1255267-A (GB)
Title: Improvements in stabilisers for synthetic resins
Inventor: PEARSON DEREK GORDON
IPC: C08K7/00
Filed: 1969-03-10
Abstract: 1,255,267. PVC stabilizers. ASSOCIATED LEAD MFRS. Ltd., and D. C. PEARSON. 27 Feb., 1970 [10 March, 1969], No. 12496/69. Heading C3P. A dust-free lead stabilizer for PVC is prepared by mixing a basic lead salt of an inorganic acid with a lubricating stabilizer and a PVC plasticizer or extender heating below the melting point of the lubricating stabilizer until gelation occurs and breaking the product into lumps. The lead salt may be a basic sulphate, phosphite, or carbonate. Suitable liquid PVC plasticizers or extenders are paraffin oil, phthalate esters, or chlorinated hydrocarbons. As gelling agents are used soaps of Ca, Ba, Sr, Mg, Zn, Li, Cd, Al or Pb, including basic lead soaps which may be formed in situ e.g. from white lead and stearic acid. A wax may also be added.
Patent GB-125192-A (GB)
IPC: F16H57/10
Abstract: 125,192. Stothert & Pitt, Pitt, W., and Franklin, E. S. March 13, 918. Constan,t-tension winding and paying-out apparatus; driving- gear.-A capstan or winch is driven by a motor through gearing to maintain a constant torque at any speed and is provided with an hydraulic pump or air compressor to absorb the excess power generated by the motor. A capstan e, Fig. 1, is driven by an electric motor a through differential gearing c, d and ordinary toothed gearing. The wheel d<1> of the differential gearing is mounted on a crankshaft f actuating pumps with loaded valves i in a tank h. The loading is such that the torque required to drive the pumps or compressor is greater than that required to drive the machine, so as to give a predetermined pull. If the rotation of the head is restrained, the wheel d<1> is rotated and the pumps are actuated. In the construction shown in Fig. 2, the field magnets and casing of the electric motor may rotate and actuate a variable stroke pump g adapted to draw liquid from a tank h and return it thereto. The armature of the motor is secured to a shaft l and drives the capstan head e through worm gearing.
Patent GB-127253-A (GB)
Title: Improvements in Sparking Plugs for Internal Combustion Engines.
Inventor: CARPENTER HENRY WILSON
IPC: H01T13/14
Filed: 1919-05-19
Abstract: 127,253. Carpenter, H. W. May 17. 1918, [Convention date]. Sparking-plugs.-A loose ring 7 is positioned in the space between the insulator and casing, its motion serving to keep the surfaces clean.
Patent GB-1302441-A (GB)
IPC: C07D303/48
Filed: 1970-03-16
Abstract: 1302441 Epoxide compounds SUMITOMO CHEMICAL CO Ltd 16 March 1970 [14 March 1969 4 Sept 1969 6 Oct 1969] 12596/70 Heading C2C [Also in Division B1] Epoxides are produced by reacting an olefin, an ethylenically unsaturated alcohol or an ethylenically unsaturated or carboxylic acid with hydrogen peroxide in the presence of a catalyst comprising-(a) an organo-tin compound containing a hydroxyl group or a group hydrolysable to a hydroxyl group in the presence of water or hydrogen peroxide and (b) at least one compound containing at least one of Mo, W, V, Se or B. Specified reactants are propylene, normal but-1-ene or but-2-ene, iso-butene, 1,3- butadiene, allyl alcohol, methyl allyl-alcohol, allyl chloride, iso-octane, styrene, alpha-methyl styrene, soybean oil, oleic acid, cyclohexene, 4- cyanocyclohexene, cyclooctadiene and cyclododecatriene. Reaction conditions specified are - 20‹ to + 150‹ C., 1 to 100 atmos. pressure, a reaction time of 1 minute to 100 hours and a mole ratio of olefin to hydrogen peroxide of 1: 30 to 30 1.
Patent GB-733076-A (GB)
Title: A portable container, useful inter alia as a display or serving stand
IPC: A47F5/04
Filed: 1952-05-19
Abstract: 733,076. Picnic &c. stands. POTTER, F. N. May 19, 1953 [May 19, 1952], No. 12611/52. Class 133. [Also in Groups VI, XIII and XIV] A portable container and stand, e.g. for carrying and serving eatables at picnics comprises a base lb with a central upstanding pillar 2 having a number of spaced shelves 3 and a removable cover or shield 6 to enclose the shelves and rest upon the base, latching means 9, 10 to hold the cover in position and a carrying handle 15. The shelves are rotatably mounted on shoulders of the pillar 2 and the base and shelves have upstanding flanges 1a, 3a. Rotatable on the base 1 is a holder for slabs of cake, cheese &c. or slices of toast, comprising radial partitions 5. The cover 6 has a flange 6a mating with a step 1b on the base and its top 7 has a centre hole 8 slotted to take over a radial pin 9 projecting from the top of the pillar. The latching member 10 has a bayonet joint 11 engaging the pin 9 and a rubber bush engaging the top of the pillar, the top 7 of the cover being flexible to hold the parts tightly together. The handle has a semi-annular part 14 fixed to the top 7 and a hinged part 15 which may lie flat on the top. The cover and pillar may be made in telescopic sections for stowing away after use. The cover may be vacuum jacketted and the container may receive ice. The device may be used as a pressure cooker, a relief valve being provided. The cover may be transparent. According to the Provisional Specification the knob 10 may form part of a cigarette lighter.
Patent GB-259859-A (GB)
Title: Improvements in guards and safety devices for motor driven vehicles
IPC: B60R21/34
Filed: 1926-05-18
Abstract: 259,859. Spillner, K. May 18, 1926. Wheel-guards, obstruction-removers, and safety appliances.-A front guard for a vehicle comprising a buffer screen c carried by the vehicle frame, a fender j pivotally connected to the frame, and a support l for the forward end of the fender which is withdrawn to permit the fender to drop during the initial rearward movement of the screen when striking an obstacle is characterized by means such as the chain m which operates to check the fall of the fender and raise it during continued rearward movement of the screen. The wire screen c is supported on a frame a carried by buffer rods d, supplementary buffers f being disposed behind the buffers e to absorb reverse shocks.
Patent GB-1492472-A (GB)
Title: Cleaning appliance particularly for cleaning component parts of tube writing pens
IPC: B08B3/04
Filed: 1975-03-26
Abstract: 1492472 Cleaning pens ROTRING-WERKE RIEPE KG 26 March 1975 [27 April 1974] 12780/75 Heading B6P Pen points to be cleaned are placed in carriers in holder 3, which slides on central shafts 3 attached to lid 2, and the lid is placed on container 1 to form a liquid-tight seal. Initially the holder is kept above the level of cleaning liquid in the container by ribs 7, but when the sealed container is inverted they are immersed and cleaned.
Patent GB-139370-A (GB)
Title: Improvement in tanks for developing photographic films
IPC: G03D13/06
Filed: 1919-05-21
Abstract: 139,370. Motteram, W. C. May 21, 1919. Trays, dishes, and containers.-Apparatus for developing films in a film pack comprises a holder 10, Fig. 1, for the film-pack casing 24, which rests on inner ledges 2, 3, 4, Fig. 7, of the tank. The holder is fitted with a plate 12 formed with relatively wide slots through which the film tabs 20 are passed. A comb 17, Figs. 1 and 5, with narrow slits is engaged with the tabs and secured on the plate 12 by a lid 22. Two adjustable guides 45, 46, Fig. 7, are fitted within the tank and are brought together to engage the edges of the films and lowered to the bottom of the tank when the films have been pulled out of the pack into the tank. The casing 24 of the film pack slides in slots 5 of the lining 2, 4 and slots with inclined portions 34 are also formed in these linings which cause a hinged portion 26 of the casing to swing as shown in Fig. 1, and so open the pack. The casing is normally closed at the bottom by a roller 35 round which the films are pulled into the tank. When all the films are pulled out, the casing is lowered and the hinged portion automatically closes. The roller 35 serves to prevent light entering the tank through the casing, and an auxiliary baffle-plate 40 is also provided on the bottom of the tank. The plates 45, 46 are adjusted after the holder is adjusted in the tank and the films have been pulled into the tank. The plates are mounted on blocks 56 and can be positioned by pins 65 for films of different widths. The blocks 56 are moved inwards so that the plates 45, 46 may engage the edges of the films by pins 47, 48 mounted on the holder 10 which are normally pressed outwards by springs 52 and engage holes 55 in the blocks 56. The blocks 56 slide in a channel member 57 which moves vertically in grooves 6 in the tank and is lowered by a slide 60. In moving the blocks 56 inwards, spring pins 70 are positioned at the top of cam surfaces 71, Fig. 10, and when the slide 60 is lowered the pins 70 snap under the ends of the cam block 75. On raising the slide 60 after development, the pins 70 engage the sloping cam surfaces 75a, thereby separating the blocks 56 and bringing them into their original positions in register with the pins 47, 48.
Patent GB-256716-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B33/00
Filed: 1925-05-16
Abstract: 256,716. Armstrong Siddeley Motors, Ltd., Smith, F. R., and Viale, S. M. May 16, 1925. Pumps, centrifugal; crank-chambers and like casings.-A blower is mounted concentrically on the crank case of a radial cylinder engine at the end remote from that from which the power is taken off. The fan 4 rotates between the walls 2, 3, delivering mixture into an annular passage 6 which may be fitted with guides. The blower casing may have elbows 8 integrally cast therewith, for connecting to single or Y-shaped pipes for feeding one or a pair of cylinders. Bearings 24 in the casing and in a removable plate 14 support spur wheels 13, 15, the spur wheel 13 being in mesh with a pinion 12 fast on the blower shaft and the wheel 15 with a larger wheel 16 driven from the engine crank shaft. The plate 14 may be extended laterally in the form of a central stem to afford bearings 20, 22 for the wheel 16. It may also be fitted with bearings 28 for a spindle carrying a spur-wheel 29 bv which motion may be transmitted from the wheel 16 to a. magneto-driving shaft 30.
Patent GB-1107874-A (GB)
Title: Distribution of gases into a reaction zone
IPC: C01B13/22
Filed: 1965-03-26
Abstract: In the vapour phase production of oxides, the burner comprises an annulus to which one of the reactant gases is fed through a tube at least one foot long having an increasing cross-sectional area in the direction of flow. The tube may be at an angle of 10-170 degrees, preferably 90 degrees, to the axis of the annulus, and have a rectangular, circular or elliptical cross-section which increases uniformly or stepwise in diameter by 1.5-40 times in 1 to 20 ft.  The burner may have up to 7 annuli, with gases fed to each (see Fig. 4, not shown). The gases are introduced at 100-2500 DEG  C. Oxygen or the inert gas if used, e.g. Ar, N2, He, Kr, Xe, Cl2 or CO2, may be preheated by combustion of fuel, CO, or S containing compound, or by plasma arc.  CO may be introduced to provide auxiliary heat in the reaction zone. In the examples, oxygen is fed through the centre of the annulus and TiCl4 into the annular part, and in Example 2, Cl2 is also fed to an additional inner annulus. AlCl3 vapour and liquid SiCl4 are added to the TiCl4 stream before introduction into the annulus.  The temperatures and velocities of the gases are specified.
Patent GB-1483563-A (GB)
Title: Separation of water from aqueous mixtures
IPC: C02F1/44
Filed: 1975-03-27
Abstract: 1483563 Membrane separation MONSANTO CO 27 March 1975 [1 April 1974] 12932/75 Heading B1X Water is separated from an aqueous mixture by contacting the mixture with a first surface of an organic polymeric membrane selectively permeable to water,: permeating a portion of the water into and through the membrane, contacting a second and opposite surface of the membrane with a water-miscible sweep liquid having a thermally dependent miscibility for water within the stable temperature range of the membrane, withdrawing a water-enriched, water-miscible phase from the second membrane surface, thermally adjusting the phase removed to a temperature outside the water-miscibility temperature range of the sweep liquid and forming two liquid phases, a water-rich and sweep liquid phase. The sweep liquid may be phenol or trimethylamine.
Patent GB-560054-A (GB)
Title: A device for insertion into keyholes for obstructing same to prevent unauthorised entry
IPC: E05B67/38
Filed: 1942-09-15
Abstract: 560,054. Obstructing keyholes. LOFQWIST, O. J. Sept. 15, 1942, No. 12994. [Class 44] A device for obstructing a keyhole 4 to prevent use of a key comprises a pair of overlapping blades inserted through the keyhole and then displaced laterally, the blades being so shaped at their ends that when so displaced said ends prevent removal of the device. The blades are held-in the displaced condition by a suitable fastening such as a padlock. As shown, blades 1, 2 are pivoted together scissors-fashion at 3, the device being passed through the keyhole and then opened as shown to prevent withdrawal, the blades being retained in the engaged position by a padlock 6 passed,through registering apertures on the widened ends 1b, 2b. As shown two sets of holes 5, 7 are provided to give finer adjustment. The ends 1a, 2a are preferably flared. In a modification the blades are connected by pins on one slidably engaged in inclined slots in the other so that lateral expansion of the device is effected by endlong movement of one blade with respect to the other. At one end the blades have oppositely disposed lugs which engage over the edges of the keyhole to prevent removal, the other end being widened and provided with padlockreceiving holes similar to those described above.