baber/WOPTO huggingface dataset:
Patent GB-783487-A (GB)
Title: Improvements in or relating to the polymerization of ethylene
IPC: C08F2/00
Filed: 1955-11-23
Abstract: Catalyst complexes for the polymerization of ethylene (see Group IV (a)) are obtained by reducing a titanium compound, in hydrocarbon solution, with an organometallic or metal hydride reducing agent in the ratio of 0.4 to 1.4, the titanium in the complex being reduced to a valency below 3.  The titanium compound may be the tetrachloride or trichloride or tetrapropyl titanate, and the reducing agents specified are lithium aluminium tetra-alkyls, Grignard reagents and metal alkyls, e.g. lithium aluminium tetradecyl and hydride, phenyl magnesium bromide, lithium butyl, tin tetrabutyl and sodium borohydride.  The hydrocarbon solvent may be cyclohexane, benzene, hexane, butane, pentane or heptane.  The catalyst complex may be formed prior to or during the polymerization.ALSO:A process for the production of solid polyethylene of melt index 0.005 to 3 comprises continuously adding ethylene to a liquid hydrocarbon solvent at 150 DEG  to 230 DEG  C. and under pressure, in the presence of a catalyst complex obtained by reducing a hydrocarbon solution of a titanium compound with an organometallic or metal hydride reducing agent in the ratio of 0.4 to 1.4, whereby the valency of the titanium in the complex is reduced to below 3, the dissolved polymer being continuously separated, e.g. by precipitation, and removed.  The titanium compound may be the tetrachloride or trichloride or tetrapropyl titanate.  Reducing agents specified are lithium aluminium tetraalkyls, Grignard reagents and metal alkyls, e.g. lithium aluminium tetradecyl, lithium aluminium hydride, phenyl magnesium bromide, lithium butyl, tin tetrabutyl and sodium borohydride.  The hydrocarbon solvent may be cyclohexane, benzene, hexane, butane, pentane or heptane.  Other ethylenic monomers such as propylene and butadiene may also be included.  The catalyst complex may be formed prior to or during the polymerization and the actual melt index may be controlled by the ratio of the catalyst components or by the temperature used.  The presence of hydrogen and oxygen in small quantities may also be used to control the melt index.  In the example the ethylene and solvent are purified before use.  The products are linear and contain titanium, and find application as pipes, wire-insulation, filaments and paper coatings.
Patent GB-472015-A (GB)
Title: Improvements in or relating to means for setting up and removing the work-holding orsimilar appliances of lathes and other machine tools having a rotating head spindle
IPC: B23Q3/10
Filed: 1936-12-08
Abstract: 472,015. Work holders. MASCHINENFABRIKS-AKT.-GES. N. HEID. Dec. 8, 1936, No. 33665. Convention date, Oct. 28. [Class 83 (iii)] Work-holding and like appliances such as face-plates and chucks are set up in lathes and other machines with a rotating head spindle by means of an auxiliary device arranged upon the machine and with which the holding appliance is brought within reach of the head spindle and is held in the correct position during the establishment of the connection with the spindle, or is moved away therefrom after release. A face plate 8 and chuck 9, Figs. 1 and 2, may be carried for alternative use, on the device which comprises a rocking arm 1 pivoted to the machine bed and carrying a slidable but non-rotatable rod 5. A transverse rod 7 rotatable in a guide on a swivel plate 6, attached to the rod 5, and also slidable therein detachably carries at its ends the face plate and chuck. Thus the face plate may be disconnected while supported by the device and the latter swung backwards and the swivel plate turned through 180 to bring the chuck adjacent the spindle end for attachment thereto. In a modification, Fig. 5, an arm 16 pivoted at 15 to the machine frame carries, by means of a rod 20, and bearing 17, a rotatable and slidable support 11 for a chuck 8.
Patent GB-767782-A (GB)
Title: "improvements in and relating to automatic platen printing presses"
IPC: B41F1/40
Filed: 1954-11-22
Abstract: 767,782. Printing presses. SCHNELLPRESSENFABRIK AKT.-GES HEIDELBERG. Nov. 22, 1954 [Dec. 30, 1953], No. 33667/54. Class 100(2) In an automatic platen printing press wherein the impression movement is obtained by a crank and connecting rod 5 operating toggle levers 4 pivoted to a shaft 6 displaceable for switching the printing pressure on and off while the machine continues to run, either the shaft 6, or its eccentric bearing 7, or the device 8, 9 by which it is displaced, is connected with the inking mechanism drive or with individual ink transfer rollers by means of a connecting rod 11, whereby the ink supply is interrupted when the printing pressure is tripped The rod 11 links a pin on the bearing 7 to a collar 23 on one arm 12 of a bell-crank lever, the other arm 18 of which lies idle as shown during normal printing: when the printing pressure is switched off by lifting and pushing in the member 9, the rod 11 is raised and the arm 18 moves into the path of an arm 17 projecting from the swinging mounting of the messenger roller 16 whereby the latter is prevented from contacting the fountain roller 20. To enable ink to be supplied even when the printing pressure is tripped, e.g. for initial inking-up, the arm 18 may be manually moved clear of the arm 17 against a spring 14 on the rod 11; the bellcrank lever 12, 18 is held in this position by lifting a catch (not shown) pivoted to the collar 23 until it engages a fixed stop; when the printing pressure is again switched on, a stop 27 on the rod 11 lowers the arm 12 sufficiently to enable the catch to fall away from the fixed stup, whereby the mechanism is ready to interrupt the ink supply when the printing pressure is next tripped. In a modification the upward movement of the member 9, as the arm 8 swings to the'right, is used to lift the rod 11: two arms are fixed to a rotatable shaft, one carrying a roller which rides on the top of the member 9 and the other being pivoted to the rod 11; also the catch for holding the arm 12 down hangs from a fixed pivot and may be swung into engagement with a projection on the arm. In a further modification, the bell-crank lever 12, 18 is replaced by a straight twoarmed lever linked to the swinging mounting of one of the rollers of the ink train whereby the roller is withdrawn from the train when the printing pressure is tripped.
Patent GB-363779-A (GB)
Title: Improvements in manufacturing hinge butts
IPC: B21D53/40
Filed: 1930-11-08
Abstract: 363,779. Hinges. SOSS, J., 647, East 1st Avenue, Roselle, New Jersey, U.S.A. Nov. 8, 1930, No. 33701. [Class 65 (ii).] Two hinge butts each with a 'hood 12, Figs. 2 and 8, and walls 14, in which the pintle holes 17 are formed, are made from a blank by two stamping operations. In a modification the walls 14. may extend as flanges 26, Fig. 8, of the plate 10. The dies may be shaped to thicken the metal at the walls 14 and reduce the hood thickness towards the stop 13.
Patent GB-973921-A (GB)
Title: Organophosphorus esters
IPC: A01N57/20
Filed: 1962-09-03
Abstract: The invention comprises organophosphorus esters of formula <FORM:0973921/C1/1> where R, R1 and R2 are each C1-4 alkyl.  They may be prepared by condensing an alkyl a -haloacetoacetate with a dialkyl alkylphosphonite, e.g. at 25-150 DEG C.  A solvent is optional.  The products are pesticides (Division A5).ALSO:Organophosphorus esters of formula <FORM:0973921/A5-A6/1> where R, R1 and R2 are each C1-4 alkyl (for preparation see Division C2) are used as pesticides.  Suitable compositions include dusts, solutions, and emulsions.  Adhesive, spreaders, activators and fertilizers may be present.
Patent GB-755199-A (GB)
Title: Improvements in low pressure casting resins
IPC: C08F283/01
Filed: 1954-11-23
Abstract: A low-pressure casting resin consists of a mixture of 5 to 50 per cent of an unsaturated polyester and 95 to 50 per cent of a mixture containing 30 to 95 per cent of a styrene and 70 to 5 per cent of an acrylonitrile.  Components specified are styrene, halogen substituted styrenes, vinyl toluene, acrylonitrile, methacrylonitrile and modified or unmodified polyesters derived from ingredients such as maleic and phthalic acids, propylene glycol and unspecified unsaturated dihydric alcohols.  The resins are polymerized by the use of catalysts such as cyclohexanone peroxide, peracids, unspecified Redox systems and cobalt naphthenate.  Reinforcement such as glass fibres, glass fabrics and other fillers may be included.  The examples also disclose the use of hydroquinone as inhibitor for the polyester.
Patent GB-1106803-A (GB)
Title: Aircraft power plant
Inventor: MULLINS JOHN ALBERT
IPC: B64C29/00
Filed: 1965-08-06
Abstract: 1,106,803. Aircraft vertical lift engine arrangements. ROLLS-ROYCE Ltd. 29 July, 1966 [6 Aug., 1965], No. 33871/65. Heading B7G. Aircraft vertical lift engines 15 are arranged one behind another within a housing 14, the engines being pivotable from an inoperative position when the engine axis is horizontal to operative positions (e.g. as shown dotted in Fig. 2) the engine thrust being directed mainly vertically with a forward and/or rearward component. In this inoperative position the housing 14 is closed, a smooth outline being formed by the engine portions 25 and spacer portions 26 of the housing. Before turning the engines 15 to an operative position the spacer portions 26 are moved, these may be split into two parts 30, 31, which are separated and slid forward over the engine portions 26 to move with the engines when they are pivoted. There may be two rows of engines side by side, Fig. 1 (not shown). Each engine 15 may comprise an air intake 20, a compressor 21 possibly made largely of plastics, combustion equipment 22, a turbine 23, and a variable area nozzle 24. The main forward propulsion jet engines may be mounted adjacent the tail plane.
Patent GB-882140-A (GB)
Title: Phenol modified melamine resin and process of producing same
IPC: C08G14/10
Filed: 1959-10-08
Abstract: A process of preparing a resin comprises heat reacting melamine and formaldehyde in the presence of from about 0,2% to 10% by weight based on the weight of melamine of a tertiary amine having a boiling point below 100 DEG C., at a temperature from about 70 DEG C. to reflux until a water tolerance between about 300% and 5,000% is attained, adding a phenol and reacting until the resin produced becomes hydrophobic, wherein the mol ratio of melamine to formaldehyde is between 1:1 and 1:6 and the mol ratio of melamine to the phenol is between 1:9 and 9:1, respectively.  Preferably the mol ratio of melamine to formaldehyde is in the range of 1:1,5 to 1:2,5. With the phenol there can also be added further formaldehyde. Specified amines are trimethylamine, triethylamine, diethylmethylamine, and dimethylethylamine. Phenol itself, cresols, xylenols, resorcinol and bisphenol A are specified phenols.  In a typical example (1) a mixture of melamine, aqueous formaldehyde and triethylamine is refluxed until the product has a water tolerance of 1,000%.  Phenol, more formaldehyde and aqueous ammonia are then added and the mixture is refluxed until it becomes hydrophobic.  Ethyl alcohol is then added and the mixture is cooled.
Patent GB-994323-A (GB)
Title: An improved method and machine for moulding
IPC: B28B7/18
Filed: 1962-09-06
Abstract: 994,323. Moulding refractory bodies. G. M. GRITTI. Sept. 6, 1962 [June 12, 1962], No. 34161/62. Heading B5A. [Also in Division B3] In a method of forming hollow or solid refractory bodies, a preformed uncompressed body is placed in a forming die and axially pressed by means of a pneumatic fly press acting on the die parts with an instantaneous impulse obtained by actuating at least one of the die parts pneumatically with cylinders having a very fast inlet and outlet of the fluid. The preformed body is placed in a housing 14 over a mandrel 19 to form an axial cavity and is compressed by a top die member 10 supported by a table 5 moved vertically by pneumatic rapid-action cylinders 7, 7<SP>1</SP>. The lower die member 13 is supported from the table by tie bars 8, 8<SP>1</SP> so that it acts as an ejector. In a modification for making bodies with recesses at right angles, Fig. 7, lateral mould parts 14, 14<SP>1</SP> are actuated by pneumatic units 44, 44<SP>1</SP> and carry hollow die members 51. The top die part 10 carries a hollow mandrel 40 the bore of which is closed by a poppet valve through which compressed air flows during retraction of the mandrel to discharge excess refractory through the axial bores of the lateral die member 51.
Patent GB-641275-A (GB)
Title: Clamping device for sail sheets and the like
IPC: B63B21/08
Filed: 1947-12-29
Abstract: 641,275. Clamps. JORSTAD, S. S. Dec. 29, 1947, No. 34388. Convention date, Sept. 2, 1946. [Class 44] [Also in Group XXX] A clamping device for sail sheets and the like comprises two clamping members 14, 15 pivotally connected with each other and provided with opposed grooves acting as clamping surfaces and is characterized in that one clamping member 14 is stationary and is provided with a clamping groove 17 substantially concentric with the pivot axis as well as with guiding members 18 for the sheet; whereas the other clamping member 15 comprises a substantially cylindrical disc provided with a clamping groove 16 which is eccentric to the pivot axis. As shown, the clamping member 15 is provided with a handle 21 by which it is turned to the left so that the rope. which is threaded through guides 18, cannot be pulled to the right. The pivot is shown as open but may be fixed within member 14.
Patent GB-829888-A (GB)
Title: Improvements in and relating to the cleaning of baffle or trickle plates in fluid treatment apparatus
IPC: B03C3/76
Filed: 1957-11-04
Abstract: 829,888. Cleaning heat-exchangers. ANCIENS ETABLISSEMENTS R. VELUT. Nov. 4, 1957 [Nov. 5, 1956], No. 34399/57. Class 99 (2). In apparatus of the type wherein water or other liquid or a solution is trickled over the surfaces of plates 1 which may be walls of tubular elements or walls of thin plates, one or more vibration generating devices 13 are coupled to the plates to impart vibrations thereto. As shown, the spaced, vertical, baffle plates 1 between which circulates air aspirated by a fan are supported on a frame 2 by rods 4, 41 extending through the plates and resting on elastic elements 6. Rubber discs 9 are interposed between tubular spacers 7 and the plates. The rods 41 are fixed to transverse bars 11 connecting adjacent stacks of plates and each secured to unbalanced rotary mechanisms 13. The latter are run synchronously and the unbalance of the mechanisms is adjusted so that the rods are vibrated backwards and forwards in a direction perpendicular to the plates. In a modification, the plates are connected by spacer rods 15, Fig. 4, and rest on a base 16, and a plate 17 carrying a vibrator 18 bears on the upper ends of the plates; when operating the vibrator produces alternating vertical forces in the plane of the plates so that the latter are subjected to elastic buckling. The periodic deformations of the plates are facilitated by horizontal grooves 19 in the plates, and the air flow takes place horizontally.
Patent GB-827116-A (GB)
Title: Improvements relating to the axle gearing of motor vehicles
IPC: F16H3/64
Filed: 1957-11-05
Abstract: 827,116. Variable-speed gear; positive clutches. DAIMLER-BENZ A.G. Nov. 5, 1957 [Nov. 8, 1956], No. 34427/57. Class 80 (2). A motor vehicle axle gear having a bevel gear differential combined with a two-speed sun-planets-ring gearing controlled by an axially slidable selector sleeve to give the different speeds, has sets of clutch teeth on the selector sleeve engageable with corresponding sets of clutch teeth on associated gearing elements, at least one of the sets of clutch teeth being rounded with their centres of curvature offset with respect to lines through the centres of the teeth. As shown, a driving crownwheel 6 has internal teeth 12 meshed by planet pinions 9 supported in a carrier 14 also supporting bevel planet gears of a differential gear, the planet pinions 9 meshing a sun-gear 17 slidden leftwards of Fig. 1 to engage its teeth with an internally toothed stationary reaction ring 21 for reduced drive or rightwards to the position shown to engage internal teeth 20 in the planet carrier 14 for direct drive. The ends of the clutch teeth on the members are rounded, for example as shown in Fig. 3, the rounded ends of the sun-gear teeth 17 having their centres of curvature offset as at 24 with respect to lines through the centres of the teeth, while the rounded ends of the teeth on the reaction ring 21 and the direct drive teeth 20 on the planet carrier have their centres of curvature located at 23 on the lines through the centres of the teeth. In a modified form, Fig. 2 (not shown), the centres of curvature of all the rounded teeth ends are offset with respect to the centre lines of the teeth. In modifications, Figs. 4-6 (not shown), the sleeve 16 fast with the sun-gear 17 is formed with separate clutch teeth for engagement with either or both the reaction member 21 and the solid drive teeth 20.
Patent GB-1122181-A (GB)
Title: Apparatus and method for electrically treating materials
IPC: H01J37/32
Filed: 1965-08-11
Abstract: A slurry of starch granules in water is passed with a swirling motion through a spark gap in a reaction chamber (see Division H1) having means for continually purging the gap with a gas stream and is treated by spark discharges which liberate electrons, ions and free radicals and generate electromagnetic radiation and sound energy to break up the granules and cause chain scission with production of ferricyanide reducing groups.  The starch granules comprise from 0.5% to 40% by weight of the slurry which has a pH value from 1 to 9 and a temperature in the range from ambient to 140 DEG  F.  An acid, e.g. HCl, may be added to produce a pH value in the range from 1 to 6, and a buffering agent may be present, e.g. an amine or ammonium ions for pH values from 1.5 to 3.0, or a borate for pH values from 7.5 to 9.0. The time of exposure to the sparks may be from 0.01 to 0.3 sec. and the purging gas may be air at a velocity of 1 to 5 ft./sec.
Patent GB-1391310-A (GB)
Title: Gas generating compositions
IPC: C06B35/00
Filed: 1972-07-24
Abstract: 1391310 Gas-generating compositions CANADIAN INDUSTRIES Ltd 12 July 1973 [24 July 1972] 34481/72 Heading C1D A gas-generating composition comprises an azide of an alkali metal or alkaline earth metal and an oxidizing compound in an amount sufficient to react completely with the azide to liberate nitrogen, and contains as an additive silica or an oxide of Al, Ti, Sn, or Zn, with or without elemental Si, Al, Ti, Sn, or Zn. The additive reacts with the toxic and corrosive residue of the reaction between the azide and the oxidizing compound. The oxidizing compound may be an inorganic peroxide, perchlorate, or nitrate, many of which are specified. In order to reduce the impact sensitivity of the composition, fumed silica coated with a silane may be added. In examples, the ingredients present are sodium azide, SiO 2 , Al 2 O 3 , Si, Al, potassium perchlorate and chlorate, and coated fumed silica.
Patent GB-739505-A (GB)
Title: Improvements in filters, particularly for liquid fuels
IPC: B01D29/00
Filed: 1953-12-14
Abstract: 739,505. Filters. BOSCH.GES., R. Dec. 14, 1953 [Dec. 15, 1952], No. 34686/53. Class 46. An inward flow filter, particularly for liquid fuels, is characterized in that the filtering element of the insert consists solely of a seamless, cylindrical tube of fulled felt held with sealing effect at each end, the thickness of the tube in relation to its length being such that the tube is sufficiently rigid to be self-sustaining. Liquid fuel flows inwards through a preliminary filter comprising a perforate sheet metal jacket 10 held between flanges 8, 9 of sheet metal end plates 3, 4 and then through a felt tube 2 held by the end plates, which latter are secured, e.g. by soldering, to a perforate supporting tube 1. An annular bead 5 in each end plate engages an end face of the tube 2. The end plates have perforations 6, 7 enabling the cartridge to be slipped over a compressing bolt holding a filter housing (not shown) together. The wall thickness of the tube 2 is preferably from “ to 1/6 the outer diameter. The space between the tubes 2 and 10 serves for collection of residue.
Patent GB-793727-A (GB)
Title: Detection of sulfur dioxide
Inventor: MCCONNAUGHEY PAUL WILLIS
IPC: G01N31/22
Filed: 1955-12-05
Abstract: A colorimetric reagent for sulphur dioxide comprises a chemically inert granular solid carrying the blue reaction product of tetramethyldiaminodiphenylmethane (TDD) and a dilute iodine, bromine, or nitric acid solution.  On contact with a gas containing sulphur dioxide, the blue colour of the reagent is bleached.  The carrier solid is preferably an adsorbent, e.g. silica gel or diatomaceous earth.  The reagent may be prepared by mixing the TDD with the granular solid impregnated with a solution of iodine, bromine, or nitric acid in water, ethanol, or glycerine.  In use, the ends of a transparent sealed tube containing the reagent may be opened and air or other gas passed through the tube; if a known volume of gas is passed, the length over which bleaching occurs affords a quantitative measure of the sulphur dioxide.  The reagent may be supplied as an ampoule containing silica gel impregnated with the solution of iodine, bromine, or nitric acid and a second ampoule containing a non-adsorbent carrier coated with TDD, suitable non-adsorbent carriers being sand, small glass beads, glass powder and talc; the two carriers are thoroughly mixed before use.  The testing method may be used for the detection of leaks in refrigerator coils, for controlling the concentration of sulphur dioxide used in bleaching wool or straw, or in the control of organic syntheses, e.g. the preparation of hydroxylamine.
Patent GB-1498179-A (GB)
Title: Electrolytic graining of aluminium
IPC: B41N3/03
Filed: 1974-08-07
Abstract: 1498179 Electrolytically graining aluminium KODAK Ltd 31 July 1975 [7 Aug 1974] 34844/74 Heading C7B A shaped object, sheet, foil or continuous web of Al metal or alloy is electrolytically grained with AC at a current density greater than 10 A/dm<SP>2</SP> in an aqueous solution containing HCl e.g. 2 to 2.5% by volume and H 3 BO 3  e.g. 1.5 to 4% by volume to obtain pit-free graining. An Al alloy foil for lithographic printing is specified containing 1 to 1.5% Mn, À1% max Cu, À6% max Si, À7% max Fe, À2% max each of Zn and Ti, balance Al, and may be pre-treated in NaOH solution to remove mill oil.
Patent GB-391397-A (GB)
Title: Nozzle holder for internal-combustion engines of the injection type
IPC: F02M59/10
Filed: 1932-12-09
Abstract: 391,397. Fuel injectors. HESSELMAN MOTOR CORPORATION, Ltd., 56, Kingsway, London.-(Hesselman Motor Corporation Aktiebolaget ; Henriksdal, Stockholm.) Dec. 9, 1932, No. 34968. [Class 7 (iii).] The fuel nozzle 9 is attached to a holder 3 by a nipple 10; the holder is fixed in a bore in the cylinder wall 1 by a nut 6 bearing on a shoulder on the holder. A plate 17 fixed to the holder by a set-screw 18 has a gap 20 to engage a pin 19 on the wall and position the holder ; when it is desired to remove the injector, the nut 6 is screwed out of the wall and, bearing against the plate 17, draws the injector out. The fuel-supply pipe 16 is attached to the top of the holder by a nipple 21, and the fuel passes through a bore 15 to a number of non-return valves 13 in a wide bore of the holder. A distance or filler piece 14 is placed between the nozzle and the last valve.