baber/WOPTO huggingface dataset:
Patent GB-1512522-A (GB)
Title: Abrasive material
IPC: C09C1/68
Filed: 1975-05-20
Abstract: 1512522 Abrasive material TREIBACHER CHEMISCHE WERKE AG 20 May 1975 [29 May 1974 (2) 25 June 1974] 21430/75 Heading C4V An abrasive material comprised essentially of corundum and zirconium, has a grain tenacity index of at least 2À05 by a described method, is correspondingly substantially free of tension and tension cracks, and finely crystallized, at least 90% by weight of the corundum and zirconia being in an eutectic mixture, and the average diameter of zirconia in the eutectic mixture being between 2,000Š and 10,000Š. The material is obtained from the molten oxide by casting into a molten salt, the salt being separated from the cold and solidified oxide. In addition to the corundum and zirconia there may be present in amounts not more than 5% an oxide, carbide, carbonitride or nitride of chromium, iron, silicone, titanium, vanadium, calcium, magnesium or a rare earth.
Patent GB-960195-A (GB)
Title: Improvements in or relating to the preparation of carbonyl compounds from unsaturated hydrocarbons
IPC: B01J27/06
Filed: 1962-06-04
Abstract: An olefin is converted to at least one carbonyl compound containing the same number of carbon atoms, by contacting with an aqueous solution containing (a) a chloride or bromide of platinum or palladium, (b) a chloride or bromide of copper and/or of iron, (c) hydrogen chloride or bromide and (d) a sulphate and/or a nitrate of magnesium, calcium, strontium, barium, zinc, cadmium, aluminium or tin, and/or a double salt containing such a sulphate, at 20 to 150 DEG C., 1 to 50 atmosphere absolute, preferably in the presence of molecular oxygen.  Specified olefins are styrene, ethylene, propylene, butylene and butadiene. In the examples propylene is converted to acetone and propionaldehyde, ethylene to acetaldehyde, and styrene to aceto-phenone, and the improvement obtained by the use of the sulphate and/or nitrate additions is shown.  Specification 876,024, German Specifications 1,059,435, 1,061,767, and Japanese Specification 36-1475 are referred to.ALSO:An aqueous catalyst for use in oxidizing olefins to carbonyl compounds (see Division C2) consists of an aqueous solution containing (a) a chloride or bromide of platinum or palladium, (b) a chloride or bromide of copper and/or a chloride or bromide of iron, (c) hydrogen chloride or bromide, and (d) a sulphate and/or a nitrate of magnesium, calcium, strontium, barium, zinc, aluminium, or tin, and/or a double salt containing such a sulphate or nitrate, e.g. caesium alums.  Specification 876,024, German Specifications 1,059,435, 1,061,767, and Japanese Specification 36-1475 are referred to.
Patent GB-478443-A (GB)
Title: An improved method of tanning hides and skins
IPC: C14C3/06
Filed: 1936-08-05
Abstract: 478,443. Tanning. CHEMISCHE FABRIK J. A. BENCKISER GES. Aug. 5, 1936, No. 21532. Convention date, March 31. [Class 76] Hides &c. are tanned by treatment with polymeric metaphosphoric acids or their watersoluble salts with uni- or poly-valent metals, ammonia or organic bases either alone or together with other mineral or vegetable tanning agents, the pH values of the solutions being adjusted to not more than 5À5. Hexa-, octo-, or dodecametaphosphoric acids may be employed and they or their alkali or ammonium compounds form complex salts with metals such as calcium, magnesium, zinc, aluminium, iron, chromium, manganese, copper, nickel, &c. suitable for the process. Examples : (1) kid skins are tanned with a solution of sodium hexametaphosphate acidified with formic acid, followed by greasing with sulphonated neat'sfoot oil; (2) skins are tanned with a solution of iron ammonium alum and sodium hexametaphosphate ; (3) skins are tanned with a solution of potassium chrome alum and sodium hexametaphosphate ; (4) skins are tanned first with a solution of sodium hexametaphosphate and calcium chloride and finished by a sumach tanning. A tanning with acid polymetaphosphate liquor may be followed by normal chrome tanning. Specification 445,612 is referred to.
Patent GB-1376832-A (GB)
Title: Electro-acoustic transducers
IPC: H04R31/00
Filed: 1972-05-09
Abstract: 1376832 Electroacoustic transducers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 9 May 1972 [12 May 1971] 21533/72 Heading H4J  In assembling an electroacoustic transducer (Fig. 1) of the type having a non-magnetic diaphragm 5 secured to a magnetic diaphragm 4 and to a support 1, an electromagnet 2 which cooperates with the magnetic diaphragm 4 is firstly rigidly secured to the support 1, and subsequently part of the non-magnetic diaphragm 5 is disposed with a slight clearance adjacent a cylindrical guide member 7 to which it is then secured. Application is to a microphone capsule for a handset. The guide member 7 is a disc-shaped projection on the magnetic diaphragm 4, which is made of sheet steel and rests on a supporting rim 3. The non-magnetic diaphragm 5 is made of aluminium. In manufacture, its edge 6 is glued to the support 1, after which the rim 8 is glued to the projection. In a second embodiment (Fig. 2) a pin 9 is spot welded to the magnetic diaphragm 4. Then the rim 6 of the magnetic diaphragm 5 is glued to the support 1 and a tubular central portion 10 is glued to the pin 9. Alternatively, a flat portion 14 (Fig. 3) of the non-magnetic diaphragm 5 is spot welded to the magnetic diaphragm 4 and the resulting assembly is slipped in the rim 11 of the support 1 until the magnetic diaphragm 4 abuts the supporting rim 3. The rim 12 of the non-magnetic diaphragm 5 is then glued to the rim 11.
Patent GB-1311241-A (GB)
Title: Process for producing hydrohalides of dicarboxylic amino acid anhydrides
IPC: C07D307/66
Filed: 1971-04-19
Abstract: 1311241 Aspartic and glutamic anhydride hydrohalides AJINOMOTO CO Inc 19 April 1971 [16 Feb 1970 30 March 1970] 21594/71 Heading C2C A hydrohalide of aspartic or glutamic anhydride is prepared by reacting aspartic or glutamic acid with a halogen-containing dehydrating agent in an inert organic medium. Suitable dehydrating agents are phosphorus halides and halides of oxyacids of carbon, sulphur or phosphorus. α-Methyl-L-aspartate was obtained by dissolving L-aspartic anhydride hydrochloride in methanol.
Patent GB-653980-A (GB)
Title: Ceramic compositions
IPC: C04B35/486
Filed: 1948-08-16
Abstract: 5 to 20 per cent of an entectic mixture of equal parts magnesium zirconate and kaolin is added to a ceramic containing as principal constituent, alumina, zirconium oxide, zircon or titanic acid, to reduce the firing temperature.  The magnesium zirconate may be replaced by a double zirconate of magnesium and another metal of Group II.  When used for coatings the composition is baked, ground, mixed with 25 to 30 per cent of an electrolyte (e.g. 2 to 3 per cent solution of aluminium chloride), to form a slip into which the parts to be coated are dipped or with which they are sprayed.  The Specification as open to inspection under Sect. 91 includes also the use of aluminous clay as a binder.  This subject-matter does not appear in the Specification as accepted.
Patent GB-949009-A (GB)
Title: Centrifugal governor, more especially for a cine camera
IPC: G03B19/18
Filed: 1962-06-05
Abstract: 949,009. Centrifugal governors. AGFA A. G. June 5,1962 [June 7, 1961], No. 21727/62. Heading G3B. An adjustable centrifugal governor e.g. a braking governor for a cinÚ camera, comprises governing elements including blade springs 8 supporting counterweights 13 and extending substantially parallel to the governor shaft 1, the adjustment means comprising a bushing 16<SP>1</SP> displaceable along the shaft 1 and along the blade springs to vary the effective length of the springs, the bushing having a guide passage for the blade springs, and itself being provided with means for adjusting the dimension of the guide passage corresponding to the thickness of the springs 8. The blade springs of which there are two are secured to a block 7 on the shaft 1 and on rotation of the shaft the weights 13 engage with a fixed brake drum (not shown). In Fig. 2 the blade springs are held in the guide passage in the bushing 16<SP>1</SP> by a set screw 22 which engages with a pressure shoe 21 to clamp the springs in the bushing. In Fig. 3, compression springs 26 act on the pressure shoes 21, the springs 26 being held in place by a recessed support ring 24. In Fig. 4 a part annular spring clip 28 is used having pins which engage the shoes 21 through holes 27 in the bushing 16<SP>11</SP>. In Fig. 5 the spring clip is modified by having bent over lugs 30 which engage the blade springs directly, without the use of the shoes 21 and pins 29<SP>1</SP> merely locate the clip on the bushing.
Patent GB-890303-A (GB)
Title: Improvements in or relating to scraper conveyors
IPC: F23J1/00
Filed: 1959-06-25
Abstract: 890,303. Ash removal. MARTIN, W. J. June 25, 1959 [July 15, 1958], No. 21788/59. Class 51(1). [Also in Group XXX] A shoot 5 leading ash from a furnace 2 to a scraper conveyer 3, 4 operating in a water trough, has a hinged or removable bottom so that, if the scraper conveyer breaks down, the ash can be directed to a scavenging trough 6 or a cinder track. As shown, the bottom of the shoot shields the conveyer from the heat of the furnace so that it can be repaired in situ.
Patent GB-252946-A (GB)
Title: Improved lamp for benzine or other easily volatilized fuel
IPC: F23D3/00
Filed: 1925-09-01
Abstract: 252,946. Hansen, C. V. Sept. 1, 1925. Fuel reservoirs; wick burners.-The reservoirs of lamps for burning benzine and other easily vaporizable fuels are divided into two chambers by a wire-gauze or perforated partition 9 separating the lower chamber which is filled with cotton or other porous absorbent material 6 from the upper chamber 8 which becomes heated by the flame. A vent tube 7 of the same height as the wick tube 4 allows the gases collecting in the chamber 8 to pass to the flame and air to pass into the reservoir. Fig. 2 shows one form of lamp in which the tube 7 is arranged adjacent to the wick tube 4. Fig. 3 shows another form of lamp in which a comparatively long perforated tube 12 which extends through the partition 9 into the cotton 6 is divided at its upper part by a partition 14 into a wick tube 4 and vent tube 7. The wick 5 in the tube 4 passes into a thicker wick 16 which extends through the tube 12 to the bottom of the reservoir 1. A perforated cylinder 11 which may be of the form shown in Fig. 7 surrounds the cotton in the lower chamber of the reservoir so as to form an annular air-space 17 or vertical channels 17<a>. The air space 17 may communicate directly with the expansion chamber 8, but if the lamp is exposed to variations of temperature a cotton layer 6a extending to the reservoir walls is preferably arranged between the cylinder 11 and the partition 9. Alternatively a perforated partition may be used instead of the cotton 6a or the edge of the cylinder 11 may be bent over and perforated. The tube 7 communicates by an aperture 15 with the chamber 8 and by one or more holes 18 in the partition 14 with the wick tube 4. The upper part of the wick tube 4 is cut obliquely so as to give an even flame. In lamps having wide reservoirs perforated air tubes or lumps of porous material such as pumice having comparatively large pores are arranged in the cotton 6. The bottom of the reservoir 1 is formed with a raised part 10 having a filling aperture 10a and adapted to receive a cork 3 so that benzine collecting at the bottom of the reservoir cannot overflow. An ignition device emitting sparks which strike the wick may be provided on the top of the reservoir, and the reservoir or the wick and vent tubes may be covered by a cap when not in use to prevent evaporation of the fuel.
Patent GB-1237322-A (GB)
Title: Fluidic fuel injection apparatus
IPC: G05D7/03
Filed: 1969-04-30
Abstract: 1,237,322. Spray carburetters. BENDIX CORP. April 30, 1969 [May 29, 1968], No. 21982/69. Heading F1B. [Also in Division G3] A fluidic fuel injection apparatus for a combustion engine comprises a source 12, 14 of pressurized fuel, an input device 30 developing a variable air differential pressure, fluidic amplifier means 36, 80, 110 connected, on the one hand, to receive the pressurized fuel for generating a fluid jet and, on the other hand, to receive the variable air differential pressure for controlling the fluid jet to operate a fuel output flow, and variable control means 140, 154, 158, 164, 168 to control the output in such a manner as to maintain a constant fuel/air ratio. Fuel for an internal combustion engine 136 is introduced to a first fluidic device 36 and directed to the outputs 52, 54 in accordance with the differance between the static and dynamic pressures of the air. The outputs 52, 54 are applied to a second fluidic device, also having a fuel input 84. The fuel input 84 is also directed by feedback 94, 96 from a third device 110 and the variable control means 140, 154, 158, 164, 168. The outputs 102, 104 are applied to the third device 110 which has a fuel input 114. The fuel directed to the output 128 is fed to the engine 136 whilst that in output 130 returns to a tank 12. The variable control means are so adjusted that the feedback pressures to the second device are equal and opposed to the input pressures 90, 92, in which case the system maintains a constant fuel/air ratio. Reference has been directed by the Comptroller to Specifications 1,113, 587 and 1,119,106.
Patent GB-642239-A (GB)
Title: Improvements relating to fishing devices
IPC: A01K97/02
Filed: 1948-08-20
Abstract: 642,239. Fishing. MASLEN, R. A., and WILES, F. E. Aug. 20, 1948, No. 22027. [Class 48] A perforated container 10 filled with ground bait is attached to the fishing line 18 so as to lie behind the hook bait. The container is an open-ended cylinder of celluloid weighted by a lead strip.
Patent GB-379490-A (GB)
Title: Improvements in or relating to brackets for use in display racks
IPC: A47B57/42
Filed: 1931-08-05
Abstract: 379,490. Wall brackets. TACOMA, J., 10, Laanweg, Amsterdam. Aug. 4, 1931, No. 22063. Convention date, Aug. 5, 1930. [Class 52 (v).] In a bracket of the type provided with downwardly directed hooks 3 for engagement with apertures in a supporting upright 15, the bracket consists of a base part 2 formed by folding a blank upon itself to form a housing for the bracket arm proper 1. In the construction shown in Figs. 1 and 2, the base part 2 and the bracket arm 1 are connected by rivets 14 and each part is formed with one hook 3. In a modification two hooks 3 are formed on the base part and the arm is detachably secured in the housing by a removable pin. In a further modification the base part is formed with two hooks and the housing for the bracket arm is situated between the hooks. The upper edge of the bracket arm may be notched. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a bracket arm consisting of two parallel members to receive a shelf &c. between them, a set-screw being provided in the upper member. In a further modification shown in Fig. 13 (Cancelled) the bracket arm 1 is pivoted at 30 to the base member 2 and is angularly adjusted by means of a slidable pawl 32 operated by a cam lever 34 against the action of a spring 35. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1330056-A (GB)
Title: Process for the manufacture of impact resistant styrene  polymers
IPC: C08F279/00
Filed: 1971-04-19
Abstract: 1330056 Graft polymers CHEMISCHE WERKE HULS AG 19 April 1971 [21 Feb 1970] 22243/71 Heading C3G A process for the manufacture of an impact resistant polymer by polymerization of a solution of rubber in styrene or mixture of styrene and up to 50% by weight of at least one copolymerizable monomer in aqueous dispersion, optionally in the presence of one or more radicalforming catalysts, pre-polymerization being carried out in a water-in-oil emulsion and polymerization being subsequently completed in suspension after converting the water-in-oil suspension into an oil-in-water emulsion, comprises introducing a solution of 2-20% by weight of rubber in styrene or mixture with up to 50% by weight of at least one copolymerizable monomer and adding thereto an 0À05-1% by weight aqueous solution of an organic colloid in an amount such that the phase ratio of the rubber solution to water is 1 : 0À4 to 1 : 1À5 by weight, the mixture being vigorously stirred to achieve a water-in-oil emulsion, partially polymerizing the resulting water-in-oil emulsion at 50-150‹ C. up to a monomer conversion of 10-50%, and finally completing the polymerization at 100-180‹ C. after conversion of the water-in-oil emulsion to an oil-in-water emulsion optimally in the presence of an oil-inwater emulsifier. The copolymerizable monomer may be acrylonitrile or a substituted styrene such as α-methylstyrene or chlorostyrene. The rubber may be natural rubber, polybutadiene, butadiene - styrene copolymers, butadieneacrylonitrile copolymers, ethylene-propylene rubber or synthetic polyisoprene. The organic colloid may be hydroxyethylcellulose, polyvinyl alcohol or alkali metal salts of copolymers of styrene with acrylic acid, methacrylic acid, maleic acid or maleic anhydrides or mixtures thereof. The polymerization may be carried out in the presence of a free radical catalyst which may be used in an amount 0À01-0À5% by weight.
Patent GB-305107-A (GB)
Title: Improvements in drilling jigs
IPC: B23B47/28
Filed: 1927-08-25
Abstract: 305,107. Atalanta, Ltd., and Adamson, J. P. Aug. 25, 1927. Drilling.-A drilling-jig comprises a pair of blocks 1<a>, 1<b> which are adapted to be secured together and are provided with intersecting grooves 2, 3. The work to be drilled is placed between one pair of grooves and the drill is guided by a button 4 which is of the same diameter as the work and is located between the other pairs of grooves. The button is bored centrally with a drill guiding hole of the required size, the shoulder 5 of the button resting on the sides of the blocks while the lower end just clears the work.
Patent GB-461068-A (GB)
Title: Improvements in and relating to cores for dynamo-electric machines
IPC: H02K1/18
Filed: 1936-08-13
Abstract: 461,068. Casting dynamo-electric cores. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 13, 1936, No. 22342. Convention date, Aug. 14, 1935. [Class 83 (i)] In casting a frame 13 about the assembled laminations 10 of the core of a dynamo-electric machine, the laminations are clamped by rings 17 remote from their outer edges so that these, being free, spread axially. The inner surfaces of the cast frame are defined by mould parts 21 of sand so that shrinkage of the frame axially and radially is permitted. The rest of the mould 20 may be of sand, &c. or of permanent material, provided with a runner 27 and held by boards 23, 24 and clamps 25.
Patent GB-698378-A (GB)
Title: Improvements in machines for bending tubing
IPC: B21D11/07
Filed: 1951-09-27
Abstract: 698,378. Angular bending. GENERAL MOTORS CORPORATION. Sept. 27, 1951 [Oct. 30, 1950], No. 22556/51. Class 83 (iv). Corrugating.-In a machine for making serpentine bends in tubing, lengths of tubing Tu are fed against a stop 170, Fig. 24, through rolls 127, 128, clamps 125, 150, fixed and movable bending shoes 48, 46, clamps 125<SP>1</SP>, 1501 and rolls 127<SP>1</SP>, 1281. The clamps 150, 1501 are moved to hold the tube and the shoes 46 are moved towards the fixed shoe 48 and simultaneously arms supporting the clamps 150, 1501 are swung to bend the tubes to the shape shown in Fig. 25. The rolls 128, 1281 respectively are turned about the rolls 127, 1271, Fig. 26, to produce reverse bends and the clamps 150, 1501, are released. The shoes 46 are then moved towards the shoe 38 to bend the tube to the shape shown in Fig. 27 and the shoe 48 is then lowered. The tube is ejected by a rod 42 and passed through rolls 180 to form the final shape. A cylinder C7 operates the ejector-bar 42. A member 43 carries the shoes 46 cooperating with the shoe 48 on a support 50 moved vertically by a cylinder C6. The member 43 is actuated by a toggle 61, 63, operated by a cam 67 moved by a cylinder C3 against the urge of a spring 72. A lug 73 on the cam actuates through a spring 77 a block 75 connected by links 81 to arms 83r, 83l carrying wings 90r supporting cylinders C4, C4 for swinging the clamps to the position shown in Fig. 26. The clamps 150, 1501 are controlled by cylinders Cl, C2, Fig. 15, not shown. The tubes are positioned as in Fig. 24, and oil pressure from a pump Pu is admitted to cylinder C3 to move shoes 46 and to swing the wings 90l, 90r to bend the tubes to the shape shown in Fig. 25. The movement of the wings controls admission of pressure to the cylinders C4, C5 to move rolls 128, 128<SP>1</SP> to positions 128a, 128a<SP>1</SP>, Fig. 26, to form the return bends. The closing of switch LS2 relieves the pressure on the cylinder C3 for a time and the clamps 150, 150<SP>1</SP> are retracted to permit further movement of the wings. After retraction of the clamps pressure in cylinders C4, C5 is relieved to reduce the pressure exerted by rolls 128, 1281. After completion of the centre bend the shoe 48 is lowered and the bar 42 ejects the tubing, Fig. 28.
Patent GB-694631-A (GB)
Title: Improvements in or relating to a method and device for controlling yarn
IPC: D04B15/38
Filed: 1948-08-27
Abstract: 694,631. Knitting. HEMPHILL CO. Aug. 27, 1948 [Dec. 11, 1947], No. 22588/48. Class 74 (ii). To prevent the pigtailing of twisted nylon yarn 1 running from a source of supply 2 to a, point of progressive use, the yarn is drawn through a tensioning device 12 and is thereafter led completely around a freely rotatable pulley 6, or halfway round such a pulley 13, i.e. through an angle of at least 180 degrees, being held taut thereabout in a substantially unvarying loop. Specifications 416,719, [Group IX], 473,924 and 502,292 are referred to.
Patent GB-759372-A (GB)
Title: Heat exchange process
Inventor: GUCKY STEFAN
IPC: F28F19/00
Filed: 1953-08-17
Abstract: 759,372. Centrifugal separators. WAAGNER. BIRO AKT.-GES. Aug. 17, 1953, No. 22640/53. Class 23. [Also in Group XIII] In apparatus comprising a plurality of concentric annular heat exchangers 6 between which a heat exchange medium (e.g. hot gas) flows with several changes of direction, the said medium is caused e.g. by guide means 4, 5, to flow through the apparatus with a rotary or twisting motion so that solid particles or other heavy components in the medium are separated out, the separated particles being extracted from the apparatus at a point or points 11 where the direction of flow of the medium is changed. The separated solids may be recirculated to clean the heat transfer surfaces. The apparatus may be of the recuperative type in which case the heat exchangers 6 comprise heat accumulators containing steam or electric heating elements or hollow members in which air and water are heated by the hot gases; or the apparatus may be in the form of a regenerator, the heat exchangers 6 then comprising solid material which absorbs heat from the hot gas and subsequently gives up this heat to air passed thereover. It is stated that the heat exchange surfaces may be maintained clean by circulating solid particles which may be then removed by known electromagnetic method.