baber/WOPTO huggingface dataset:
Patent GB-604902-A (GB)
Title: Insolubilization of n-alkenoxymethyl polyamides
IPC: C08G69/50
Filed: 1945-12-10
Abstract: N-Alkenoxymethyl polyamides are insolubilised either by incorporating a substance thermally or photolytically decomposable to free radicals below 200 DEG  C. and then subjecting the mixture to a photolytic treatment or heating it below 200 DEG  C., or by incorporating a conventional rubber curing agent and heating the mixture below 200 DEG  C.  Suitable free radical producing compounds are described in Chem. Rev. 21, 169.  A list in the Specification includes peroxides, persulphates, percarbonates and perborates, organo-metallic compounds, e.g. phenyl lithium, butyl lithium, ethyl mercuric bromide, phenyl magnesium bromide, azo compounds, alkyl halides, aldehydes, ketones, acyloins, and metallic compounds, e.g. cobalt naphthenate.  Rubber curing agents mentioned are sulphur, mercaptobenzthiazole and tetraethylthuiramdisulphide.  The N-alkenoxymethyl polyamide may be dissolved in alcohol, mixed with the curing agent, formed to shape and insolubilised, or the materials may be compounded on mixing rolls in which case an anti-oxidant, e.g. a phenol, ethers of phenols, and substituted aromatic amines are preferably incorporated first.  In the examples: (1) N-allyloxymethyl polyhexamethylenadipamide is dissolved in methanol, benzoyl peroxide added and the solution air dried to form a film which is baked at 105 DEG  C.  Example (2) is similar.  Example (3) employs benzoin as the catalyst and insolubilises by exposure to ultra-violet light.  In example (4), a mix containing N-methallyloxymethylpolyhexamethylene - adipamide, channel black, zinc oxide, stearic acid, sulphur and mercaptobenzothiazole is vulcanized in sheet form in a mould at 140-150 DEG  C.  (5) Tetraethylthiuramdisulphide is added to a methanol solution of N-allyloxymethyl polyhexamethylene adipamide, a film formed and baked for 3 hours at 100-140 DEG  C.  (6) A mixture of N-allyloxymethyl- and N-methoxymethylpolyhexamethylene adipamide is compounded with palm oil, monobenzylether of hydroquinone (anti-oxidant), barium sulphate, black iron oxide and a dispersion of benzoyl peroxide on calcium sulphate, and the sheet from the mill is moulded for 5 minutes at 120 DEG  C.  The oxymethylpolyamides may be obtained by heating a solution of the polyamide in formic acid with paraformaldehyde and the appropriate alcohol, and precipitating the product with water or other non-solvent, or by treating the solid polyamide with the alcohol and formaldehyde and a small amount of phosphoric or other oxygen-containing acid catalyst.  Unsaturated alcohols mentioned are allyl, methallyl, crotyl, furfuryl, cyclohexenyl, cinnamyl, oleyl, sorbyl, propargyl and ricinoleyl.  The proportion of alkenoxymethyl groups introduced may vary widely. Suitable polyamide starting materials are described in Specifications 461,236 and 461,237. The products may be used for yarns, fibres, films, moulded objects, adhesives, coatings or interliners for fabrics, safety glass or plywood.
Patent GB-372336-A (GB)
Title: Improved manufacture of carbon
IPC: D01F9/17
Filed: 1930-11-06
Abstract: Ash-free carbon is obtained from purified lignin by carbonizing it by a wet method either before treatment with an alkali or after treatment first with an acid and then with an alkali.  The lignin may be precipitated from waste cellulose lye by an acid, preferably hydrochloric acid, or produced from cellulosic material from which colophony may be removed by turpentine, the lignin being then washed with warm water.  In an example, purified lignin is carbonized by heating with sulphuric acid of 65 DEG  Baum<\>ae for about 12 hours at 165-200 DEG  C.  After removal of excess sulphuric acid, the mass is treated with a solution containing 4 parts of sodium carbonate and 1 of potassium carbonate until the silicates are removed, washed with warm water, treated with concentrated hydrochloric acid for 8-12 hours and then washed with warm water. In a second example, treatment with gaseous hydrofluoric acid and caustic soda is carried out prior to carbonization with hydrochloric acid.  After washing and drying the carbon is ground, further treated with sulphuric acid, washed and dried.  The Specification as open to inspection under Sect. 91 (3) (a) states also that the carbonization of the lignin may be effected by dry distillation.  This subject-matter does not appear in the Specification as accepted.
Patent GB-339074-A (GB)
Title: Improvements relating to record-controlled statistical apparatus
Filed: 1929-11-02
Abstract: 339,074. Tauschek, G. Nov. 3, 1928, [Convention date]. Statistical cards; sorting cards.-In statistical apparatus wherein a number is represented in a column by a differential number of holes, these holes differentially control the amount of current through an ammeter. In other constructions only one hole is used for each denomination, the size of the hole being proportional to the number represented and controlling counters &c. through mechanical, electrical, pneumatic or chemical means. In Fig. 1 the number of holes 2a, 2b, 2c &c on a column is equal to the number of the digit, and when read bring the appropriate number of resistances 4a, 4b, 4c, &c. into series with the ammeter 6, which controls counting, sorting, or other mechanism. The ammeter may be replaced by a solenoid with a cone moved differentially against spring means according to the amount of the current. In a modification the holes 2a, 2b &c. in each column are replaced by a slot of differential length. In Figs. 3-5 there is only one hole for each denomination, the size of the hole being according to the number it represents. In Fig. 3 the hole is read by a tapered rod 9 and sets the wheel 8 the correct amount. In Fig. 4 the hole 11 determines the amount of light transmitted from a, light source 10 to a photo-electric cell 12 in series with ammeter 6. In Fig. 5 a metal plate is used. After this plate 1 has been placed between receiving tubes 15 and tubes 13a, 13b, 13c &c. containing fluid or gas at pressure, the valves 16 of tubes 13a &c. are opened for a fixed time. The amount of fluid passing into the receiving tubes 15 will be according to the sizes of the holes in plate 1. Pistons 17 are thus lowered differentially to actuate counters &c. In Fig. 6 a number is represented by a piece of electrically conductive substance 18 set in a non-conducting paper 1. Each piece 18 has a differential electrical resistance corresponding to the number it represents, so as differentially to affect the ammeter 6.
Patent GB-834852-A (GB)
Title: Improvements in diamond wheel-dressing or truing-tools
IPC: B24B53/12
Filed: 1957-10-28
Abstract: 834,852. Trueing grinding wheels. CORONEL, M. S. Dec. 30. 1958 [Oct. 28, 1957], No. 33476/57. Class 60. A diamond tool for trueing a grinding wheel comprises a shank with one or two transverse pins at one end, a threaded portion at the other end adjacent where the diamond is mounted, and an intermediate unthreaded portion between the pin or pins and unthreaded portion for the purpose of receiving a bush. Cross slots on the bush engage the pins and a nut on the threaded portion fixes the shank in the bush which can then be placed on a tool post for use. When a flat is worn on the tool, the nut is slackened to permit the shank to rotate 90 degrees until the pins engage the next slots and the nut retightened.
Patent GB-1117600-A (GB)
Title: Improved pour point meter
IPC: G01N33/28
Filed: 1966-07-26
Abstract: 1,117,600. Determining the pour point. ESSO RESEARCH & ENG. CO. July 26, 1966 [ Oct. 5, 1965], No. 33632/66. Heading G1S. In a method for determining the pour point of a liquid e.g. oil, a conduit 21 is filled with a sample of the liquid and cooled to a temperature below its pour point, whereupon a pressure is applied to one end of the conduit and the temperature raised until the pressure applied to the one end of the conduit is transmitted to the other end. As shown in Fig. 2, the conduit 21 is surrounded by a thermo-electric cooling unit 58 and connected to pressure lines 24, 36. In use, the sample is fed from a pipe line 10 see Fig. 1 (not shown) to the conduit 21 and cooled to a predetermined temperature below the pour point of the sample which is detected by thermo-couples 52. Subsequently air pressure is directed at one end of the sample and the temperature raised until a pressure signal is detected at switch 40, the temperature detected by thermo-couple 52 being recorded.
Patent GB-635867-A (GB)
Title: Improvements in or relating to propelling pencils
IPC: B43K21/16
Filed: 1948-01-19
Abstract: 635,867. Propelling-pencils..MURRAY, F. L. Jan. 19, 1948, No. 33645. [Class 146 (iii)] A propelling pencil comprises a tubular casing carrying a point section 3 provided with slits 5 at its front end and a spring ring 9 at its rear end, which ring frictionally engages the bore of a tubular  casing 11 to prevent undesired relative movement between the casings 1 and 11. In operation, the writing end is pressed against a surface by applying pressure to the knob 15, thus causing an ejector rod 23 slidable in a tube 10 to press the lead against the surface. Further pressure compresses a spring 21 positioned between a member 20 carrying the rod 23 and the base of a spare lead receptacle 17. When the knob 15 is released the ejector rod under the action of the spring 21 projects the lead beyond the end of the point section 3.
Patent GB-176117-A (GB)
Title: Recovery of varnish and other ingredients from waste micanite and the like
IPC: C08J11/08
Filed: 1920-11-29
Abstract: 176,117. Whalley, H. C. S. de, and Micanite & Insulators Co., Ltd. Nov. 29, 1920. Addition to 155,318. Varnishes, removing; resins. - In the process for the recovery of varnish and other ingredients from scrap micanite described in the parent Specification, a bath of liquid having a higher boiling-point than that of water, such as a high flash point naphtha, and at atmospheric pressure is substituted for a bath of water or alkaline solution under pressure. The softened material is then stirred into a bath of alcohol or other solvent of the varnish.
Patent GB-1113938-A (GB)
Title: Pouring chamber assembly for a liquid pouring machine
IPC: B05C5/00
Filed: 1965-08-06
Abstract: 1,113,938. Coating apparatus. R. BUERKLE [trading as ROBERT BUERKLE & CO.] 6 Aug., 1965 [14 Aug., 1964], No. 33701/ 65. Heading B2L. Curtain liquid pouring apparatus has a pouring chamber casing in two parts 1'. 1", one part being hinged to the other at 2 to provide access to the interior thereof, a pouring slit 29 at the lower end of the pouring chamber for pouring a curtain of liquid therefrom. a connecting chamber 21 above the pouring chamber for receiving liquid therefrom. a ventilating valve 26 for sealing a ventilating passage from the connecting chamber 21 and means 8, 9, 10 for passing a sufficient flow of liquid to the pouring chamber other than through the connecting chamber to maintain a curtain of liquid flowing from the pouring slit whilst the ventilating valve 26 is closed. The arrangement. is such that in use. liquid in the pouring chamber is under slight vacuum by creating a vacuum in chamber 21 by adjustment of the delivery from reservoir 6 with the ventilating valve 26 closed. The width of slot 29 is adjustable by eccentric device 30.
Patent GB-1477683-A (GB)
Title: Ignition systems for internal combustion engines
IPC: F02P15/12
Filed: 1974-07-31
Abstract: 1477683 Ignition systems ROBERT BOSCH GmbH 31 July 1974 [1 Aug 1973] 33726/74 Heading F1B An ignition system comprises a primary ignition circuit including the ignition coil primary winding 1 and a second ignition circuit including a capacitor 2, both circuits being inductively coupled to the ignition coil secondary winding, and a monitoring circuit 4 adapted to monitor the insulation resistance R of a spark plug 19 to render the second ignition circuit operative in addition, or as shown, as an alternative to the primary ignition circuit when the insulation resistance falls below a predetermined value, e.g. due to soiling of the spark plug. As shown, the primary ignition circuit is controlled by a circuit breaker 21 controlling the base current of a switching transistor 11. The breaker similarly controls a thyristor 14 in the second ignition circuit. A voltage convertor 12 ensures that the capacitor is charged to 500 volts. The monitory circuit is effective automatically to close a switch 40 in the second circuit to render it operative when the insulation resistance falls below the predetermined value. A switch 41 may be provided in the primary ignition circuit to open automatically when switch 40 closes. The bridging switches 51, 52 are closed at engine starting e.g. by being actuated in dependence on actuation of the engine starter switch, to ensure that both circuits are operative at starting.
Patent GB-369587-A (GB)
Title: An improved joint for split shaft collars, pulleys, pipe couplings and the like
IPC: F16B21/16
Filed: 1930-11-10
Abstract: 369,587. Pipe couplings. PRIME, E., 213, Winchester Road, Highams Park, Ching- ford, Essex. Nov. 10, 1930, No. 33767. [Class 99 (i).] A joint for split collars for coupling pipes comprises forming each half of the collar with an identical pair of lugs A, B, which interlock in the manner of a hinge, so that the halves cannot be separated until they have been opened beyond an angle of, say, 30‹. The opposite ends are connected by a screw or bolt passed through apertures D. To couple pipes the collar is clamped over their abutting ends,
Patent GB-1089210-A (GB)
Title: Improvements in vehicle windscreen wipers
IPC: B60S1/38
Filed: 1966-07-28
Abstract: 1,089,210. Windscreen wipers. ROBERT BOSCH G.m.b.H. July 28, 1966 [Aug. 13, 1965], No. 33917/66. Heading A4F. In a windscreen wiper harness a yoke 3 carries a coupling member 20, e.g. of plastics material, a portion 22 of which fits snugly between the side walls 12 of a yoke 4. The member 20 is formed with a head 25 for engaging the rear web portion 11 of the yoke 3, and with knife-edge shoulders 21 engaging the rear web portion 13 of the yoke 4. A member 15 surrounding the member 20 fits between the side walls 10 of the yoke 3 and is formed with knife edge shoulders 14 for transmitting pressure from the yoke 3 to the yoke 4. In another embodiment the coupling member is carried by a yoke of wind guide vane form and has projecting pivots engaging in holes in the side walls of a second yoke. In a further construction the coupling member carried by a yoke is of generally U-shape and has arms formed with knife-edge shoulders for engaging opposite sides of the rear web portion of a second yoke. In a further embodiment the coupling member is secured to the shanks of a member carried by a yoke, the shanks passing through apertures in a second yoke.
Patent GB-339765-A (GB)
Abstract: 339,765. Friden, C. M. F. Dec. 12, 1928, [Convention date]. Multiplying-apparatus. - In a machine for the four rules means are provided for introducing the decimal equivalent of fractional values directly into a plurality of differential actuating units. As shown in Figs. 2 and 3, applied to a machine of the type described in Specification 229,642, wherein the key stems co-operate with one or other of a pair of duplex levers 13, 21 pivoted on brackets 14, 19 respectively, a row of fraction keys 7 is provided and so arranged that the depression of a key differentially positions the last three actuating units at the right of the machine. Secured to each key stem is a cross bar 25 guided at its other end in a slotted plate 26 and provided with depending projections 27, 28 overlying the duplex levers 13<a>, 13b of the adjacent denominations, the projections being of different lengths to contact, on depression, with the appropriate part of the levers. Recesses 31, 32 in the lever 21 underlie the fraction keys for ¢ and “ to prevent operation of the lever by the said keys. The numeral keys of the last two rows may be used to introduce whole numbers when the fraction keys are not employed. Each actuator unit is associated with a sector 34 to display the decimal equivalent of the fraction entered.
Patent GB-176138-A (GB)
Title: Improvements in liquid fuel burners
IPC: F23D11/10
Filed: 1920-12-01
Abstract: 176,138. Quinn, W. R. Dec. 1, 1920. Spray burners.-In a liquid-fuel burner of the type in which oil is broken up and mixed with steam or air in a casing preparatory to burning at the tip, oil is discharged so as to pass tangentially over a distributing-surface in a substantially uniform film and to enter the path of the steam or air. Oil passing through an inlet passage 26 and a pipe in a head 1 to a passage 17 in a plug 15 arranged in the burner casing 2 is discharged through inclined passages 20 in line with a conical surface 22 and enters the path of the steam, which is delivered through an inlet passage 28 in the head 1 and passes through holes 16 in the plug 15. The surface 22 is of reverse conical form so as to be shielded from the direct action of the steam. The holes 16 are preferabl inclined so as to direct the steam outwardly and to impart to it a whirling motion. The casing 2 is preferably formed with an enlarged portion 30 to accommodate the plug 15 and its head 18 and tapers to a reduced neck portion 32, beyond which are expansion and contraction chambers 33, 34 and a burner tip 51. The enlarged portion 30 and the head 18 are corrugated to assist in the atomization of the oil, and conical baffles 35 may be provided in the chambers 33, 34. The burner tip is formed with openings 54 preferably separated by an air space 55. In order to allow steam to be blown through the oil-passages for cleaning purposes, a needle-valve 10 may be provided in the oil-passage 26.
Patent GB-199674-A (GB)
Title: Improvements relating to sliding windows for vehicles
IPC: B60J10/04
Filed: 1922-03-17
Abstract: 199,674. Garner, H., and Garner, J. P. March 17, 1922. Vehicle windows.-Windows, particularly of motor vehicles, are slidably mounted in a cavity in the door &c., and the L- shaped hinged upper part 5 of the inner wall closes over the window when down and under it when raised. The part 5 is spring-pressed against the window and can hold it in any position. Pivoted channel guides 16 for the window may be housed in the door cavity, and are engaged by recesses in the hinged part. When the guides are extended to take the raised window the recesses are closed by sliding blocks 17 having handles 19. Specifications 180,115 and 199,145 are referred to.
Patent GB-915688-A (GB)
Title: Improvements in semiconductor devices
Inventor: FULLER DENNIS QUINTRELL
IPC: H01L29/66
Filed: 1959-10-07
Abstract: 915,688. Semi-conductor devices. PYE Ltd. Sept. 28, 1960 [Oct. 7, 1959], No. 33996/59. Class 37. A two-terminal semi-conductor device comprises a wafer of one conductivity type with a series of spaced zones of opposite type extending into it such that the space charge zone around one PN junction can influence the next adjacent junction region, and over ohmic contacts to the zone at one end and to the wafer at the other. Fig. 1 shows an N-type silicon or germanium wafer 1 with P-type zones 2. When a reverse bias potential is applied between ohmic electrode 4 on one end P-type zone and ohmic electrode 3 on the wafer adjacent the opposite end P-type zone, the current increases in steps as the space charge region around each P-type zone reaches the adjacent junction whereupon the current suddenly increases. If A.C. is applied a staircase waveform results. The successive P-zones may lie on opposite sides of the wafer.
Patent GB-861604-A (GB)
Title: Improvements in or relating to reinforced concrete piles
IPC: E02D5/66
Filed: 1957-10-31
Abstract: 861,604. Preparatory tubes for cast-in-situ concrete piles. HOLMES, A. B. Oct. 21, 1958 [Oct. 31, 1957], No. 34092/57. Class 68(2). [Also in Group XXVIII] A preparatory tube 5 for a cast-in-situ reinforced concrete pile has internal projectious 6 which centralize a cage of reinforcement material 8 while the concrete is poured. The projections consist of ribs secured to the inner wall of the tube 5 and may be continuous or arranged in circumferential groups and have tapered ends 6a. Where the ribs are in groups the length of the parallel part of each rib is greater than the pitch of the hoops 8a of the reinforcement cage, and preferred dimensions are given as: length, not exceeding one tenth of length of tube; radial depth, one tenth to one twentieth of the length of the rib; and thickness not exceeding one quarter of the depth.
Patent GB-744451-A (GB)
Title: Improved purging gas generator
IPC: B64D37/32
Filed: 1953-12-08
Abstract: 744,451. Generating combustion products under pressure. STEWART-WARNER CORPORATION. Dec. 8, 1953 [Dec. 9, 1952], No. 34174/53. Class 51 (1). [Also in Group XIII] The invention relates to apparatus for generating purge gas to be supplied to compartments, for example in an aircraft, in which inflammable vapour may collect. The apparatus comprises essentially the combination of a combustion chamber in which combustion products are generated by the combustion of fuel in air under pressure, and a heat-exchanger in which the combustion products are cooled before passing to the compartments. The combustion apparatus comprises a flame tube 118 to which combustion air is supplied from the duct 24 through the tube 130 to a chamber formed by the walls 112,114, the air entering the flame tube through slits 126 in the conical end wall 120. Fuel is supplied from the injector 136 and ignition is caused by a sparking plug 86, these two components being mounted on a spider 122 mounted on a ring 124. The downstream end of the flame tube is open but the surrounding shell 108 is closed by a plate 110. Gases pass from the open end of the flame tube and through the opening 128 into the annular space around the flame tube within the shell 108. The gases then pass successively into the two annular spaces formed by the shells 104, 106 'and 98, 100 and finally discharge through the outlet 40. The gases are caused to travel circumferentially within the annular spaces by the positioning of the interconnecting passages. Cooling air flows around the shells 98, 100 and 104, 106 in an upstream direction, these shells constituting a primary heat-exchanger. Air is supplied, for example, from the compressor of a gas turbine jet propulsion engine through the inlet valve 97, the air passing through an automatic pressure regulator 18, through the venturi 22, 24 where the mass flow is measured by means of tappings 28, 30 which are connected to the fuel-air ratio controller 26. Fuel is supplied through the supply line 32, filter 34, an electricallyoperated on-off fuel valve 36, an automatic pressure regulator 37 and thence to the fuel-air ratio controller which modulates the flow so that an amount of fuel proportionate to the rate of air flow will be supplied to the injector 86. The combustion products after passing the primary heat-exchanger 98, 100, 104, 106 pass through the duct 40 to the secondary heat-exchanger 44, 46 48, 50 and are delivered through the duct 52 through a carbon and water separator 54, through a pressure relief valve 56 to a three-way starting valve 93. The cooled gases may then pass through the duct 95 to mix with the cooling air flow, during starting and until the gases become of a satisfactory quality. Once the gases are satisfactory they pass through the duct 64 to the compartments that are to be purged. The electrical control circuit is described with reference to Fig. 8 (not shown).