baber/WOPTO huggingface dataset:
Patent GB-582713-A (GB)
Title: Improvements in or relating to the separation and segregation of diolefins from hydrocarbon mixtures
IPC: C07C7/148
Filed: 1943-05-31
Abstract: Diolefins are separated from mixtures of hydrocarbons of from 4-6 carbon atoms containing diolefins and acetylenes by contacting with a cuprous salt solution containing at least 2 mols. per litre of copper and at least 0.5 mols. per litre of ammonia in excess of that required to solubilize the cuprous hydroxide present, separating the solution, and heating it to recover the diolefins and polymerize the acetylenes.  A cracked C4 cut may be treated with an ammoniacal cuprous acetate solution of 3 molar cuprous content, 4 molar ammonium acetate and 7 molar free ammonia content at 10 DEG  C. to dissolve butadiene and acetylenes.  The solution is then heated to 60-85 DEG C. when butadiene and some acetylenes are desorbed, the remainder being polymerized.  The absorption is generally effected at -10 DEG to 25 DEG  C. and 19-25 p.s.i. gauge, and may be performed in stages with separation of solution from unreacted gas after each stage, gas from the last settler being treated with fresh cuprous solution and discharged.  Solution from the first settler may be heated to 10-30 DEG  C. at 80 p.s.i. and then desorbed.  Side streams are taken from the desorber, the upper one being cooled and returned to the top, the lower being heated and returned to the bottom to maintain a top temperature of 70-85 DEG  C.  Pure butadiene is taken overhead. The hot lean solution passes to a soaking drum where its temperature is maintained to polymerize residual acetylenes.  The solution then passes to a second desorber where allenes may be recovered if present.  Examples illustrate the effect of high excess ammonia on the solubility of copper acetylides in cuprous solutions, and the polymerizing of ethyl and vinyl acetylenes and allenes such as propadiene by heating in high ammonia cuprous solutions.  Solutions specified have a molarity of 3 cuprous copper, 4-8 ammonium acetate and 3-8 free ammonia.
Patent GB-378355-A (GB)
Title: Improvements in or relating to the manufacture of records for phonographs and like sound reproducing machines
Filed: 1932-03-24
Abstract: 378,355. Depositing substances by electric discharge. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Harrison, H. C. ; 94, Bayview Avenue, Port Washington, New York, and Russell, A. G. ; 47, Rector Place, Red Bank, New Jersey, both in U.S.A.) March 24, 1932, No. 8762. Convention date, May 29, 1931. [Class 41.] In the process of coating wax or like surface bearing a sound record with metal by means of an electric discharge as a step in the duplication thereof, the record material is maintained within predetermined temperature limits by the action of a cooling medium. In the apparatus shown, the record comprises a metal disc having one surface slightly recessed and covered with a thin layer of recording wax. This is mounted face downwards beneath a metal plate carrying a jointless cooling coil 24 the ends of which 25, 26 assist to support the assembly from the glass cover 13. The cover 13 may be hinged to the chamber, the top of which is ground to form an airtight joint. The cathode consists of a glass plate 18 supported by rubber legs 19 and covered with a thin sheet 20 of gold. The anode consists of an aluminium disc 21. Current is supplied at 3500 volts from a transformer and rectifier through a resistance 32. The chamber is evacuated by a mercury pump and an oil pump working in series, the vacuum being regulated by a leak valve. The exhaust passage 35 is located centrally in the chamber to equalize flow effects. The degree of vacuum, voltage and other conditions should be such that the dark space of the discharge is at 2/3 of the distance from the cathode to the record.
Patent GB-1121031-A (GB)
Title: Improvements relating to planing water craft
IPC: B63B35/73
Filed: 1966-03-01
Abstract: 1,121,031. Planing craft. T. J. BEDFORD. 16 Dec., 1966 [1 March, 1966], No. 8810/66 Headings B7A, B7S and B7V. A planing water craft comprises a hull 10 of such shape and buoyancy as to provide a surface on which the craft planes on an aft portion only and the steerable rudder 27 extends below a portion of the surface forward of the aft portion. The embodiment described is steered like a cycle or motor-cycle. The rudder may be retractable and the hull may be packed with expanded polystyrene at 35, 36 and 37 which gives sufficient buoyancy to prevent the craft from sinking in the event of mishap.
Patent GB-1085212-A (GB)
Title: Braking systems
Inventor: PORTAS DONALD
IPC: B64C25/44
Filed: 1964-03-03
Abstract: 1,085,212. Fluid-pressure brakes. DUNLOP RUBBER CO. Ltd. Feb. 18, 1965 [March 3, 1964], No. 8817/64. Heading F2F. In an hydraulic braking system for an aircraft, electrically-operated control valves 3c-10c are fed with variable current by a circuit comprising inductive transducers 11, 12, 11a, 12a which when supplied with alternating current by lines 13, 14 give output currents depending on the degree of depression of pedals 15, 16 and 17, 18 by the pilot and co-pilot, respectively, the outputs from the transducers being applied to A.C. amplifiers 20 and 21 and thence to D.C. amplifiers 23-26 and 27-30 which supply the control valves 3c-10c. The D.C. amplifiers also have signals applied to them by skid-sensing units 3a-10a associated with wheels 3-10 of undercarriages 1 and 2, so that valves 3c-10c control the hydraulic pressure applied to respective wheel brakes 3b-10b progressively in accordance with the degree of depression of the pedals 15-18, and also relieve the pressure applied to the brake of any wheel which tends to skid. In a modification (Fig. 2, not shown) a separate set of D.C. amplifiers (43-(50) is provided for amplifying the signals from the skid-sensing units, the amplified signals being then fed to the second coils of double coil control valves (3d)-(10d) which replace the valves 3c-10c.
Patent GB-981184-A (GB)
Title: Improvements in or relating to frequency converter arrangements for multi-channel modulated carrier communication systems
IPC: H04J1/04
Filed: 1961-03-10
Abstract: 981,184. Multiplex systems; frequency changing. TELEFUNKEN A.G. March 10, 1961 [March 16, 1960], No. 8837/61. Headings H3F, H4L and H4R. In a frequency-division multiplex carrier wave transmission system the twelve speech channels LF (one shown) are each converted into a common frequency range of 20-24 kc/s. by means of an oscillator producing an output having a frequency of 20 kc/s. cooperating with a respective modulator 3, a filter 4 selecting the upper sideband in each case. The upper sidebands in the range 20-24 kc/s. are fed to respective modulators 5 of which there are twelve arranged in groups of four and supplied with carrier oscillators 112, 116, 120 and 124 kc/s. respectively in each group. The outputs of each group are combined as at 6 and after amplification at 7 a filter 8 selects the upper sidebands in each case producing three outputs in the range 132-148 kc/s. The three signal groups thus formed are fed to respective modulators 9 supplied with carrier oscillations of 208, 224 and 240 kc/s. respectively, and the outputs of these three modulators are combined at 10 and a common filter 11 selects the three lower sidebands providing an output in the range 60-108 kc/s. The receiver 13 to 24 is the inverse of the transmitting arrangement. The system permits the use of common filters 8 and 11 with consequent economy.
Patent GB-684259-A (GB)
Title: Improvements in or relating to wrapping machines
IPC: B65C1/02
Filed: 1950-04-11
Abstract: 684,259. Labelling machines. FORGROVE MACHINERY CO., Ltd., RUSSELL, A., HOPTON, A., and CARTER, A. F. April 10, 1951. [April 11, 1950] No. 8876/50. Drawings to Specification. Class 73. [Also in Group XVII] A wrapping and labelling machine comprises a discharge platform fitted with side plates, means for feeding wrapped articles in succession along the platform to a sealing station, a reel carrying a web of end-seal material, intermittently-operating mechanism for feeding the web forward step-by-step to present its leading edge opposite an aperture in one of the side plates at the sealing station, and a member carrying a knife and presser which is periodically reciprocated transversely of the platform to sever an end-seal from the web and press it through the aperture against the end of the package. The end-seals may be caused to adhere by gum applied to the end of the package or to the web. Preferably, a web coated on its inner face with a thermoplastic material is used and the presser is heated. The machine described is identical with that described in Specification 684,252.
Patent GB-1260753-A (GB)
Title: A fluid-pressure control system for dual motors
IPC: F15B13/06
Filed: 1969-02-19
Abstract: 1,260,753. Fluid-pressure servomotor systems. CATERPILLAR TRACTOR CO. Feb. 19, 1969 [May 22, 1968], No.8903/69. Heading G3P. A pair of hydraulic motors 13, 14 controlling a single implement are operated simultaneously by a system comprising a separate main source 16, 17 of fluid under pressure for each motor, a separate control valve 22, 28 between each fluid source and its motor, actuator means 33 connected between the control valves, and means 136, 143 associated with the actuator means and both control valves for positioning the latter to provide equal fluid-flows to both motors. In the preferred embodiment, the motors 13, 14 lift and lower the bucket of an articulated bucket loader while a further pair of motors 11, 12 controlled by valves 21, 27 coupled by linkage 77, 81 to each other and to an actuator 31 regulate the tilting of the bucket. Manuallyoperated valves 37 and 38 control the actuators 31 and 33, respectively, and have passages 73, 87 and 131, 157 to provide a follow-up so that the valve positions determine the speeds of the lift and tilt motors, equal pressures being maintained between the motors of each pair by cross conduits 52, 53 and 54, 56. When the pump 16 is not running and the valve 38 is moved to the position for retracting the lift motors, a valve 169 is moved by a spring to connect a conduit 168 to drain through conduits 171 and 158. A valve 164 is now lifted by the pressure of the fluid beneath the motor pistons to allow them to retract. The inlets to the control valves 21, 22 and 27, 28 are arranged to give operating priority to the tilt motors and are provided with check valves 84, 153 which open when return lines 151, 152 are closed by movement of the valve spools.
Patent GB-870364-A (GB)
Title: Improvements in or relating to hand tools
IPC: B25B27/14
Filed: 1959-03-16
Abstract: 870,364. Extracting internally threaded tubes. JEFFS, J. W. April 4, 1960 [March 16, 1959], No. 8926/59. Class 61. A tube extractor for unthreading a length 9 of internally threaded tube from another part, comprises a cylindrical body 1 formed with a male thread 2 and having a handle 7 for screwing the body into the tube, and a locking ring 4 having a handle 8 and formed with a female thread 5 for engagement with the male thread 2 on the body 1 for screwing up against the end of the tube to lock the body in position.
Patent GB-1382102-A (GB)
Title: Pad-dyeing of cellulose and synthetic polyamide fibre blends
IPC: D06P3/66
Filed: 1972-02-25
Abstract: 1382102 Pad-dyeing blends of cellulose and polyamides HOECHST AG 25 Feb 1972 [25 Feb 1971] 8928/72 Heading D1B Blends of cellulose and synthetic polyamide fibres are continuously or semi-continuously pad-dyed by applying an aqueous liquor comprising a reactive dye, a non-reactive metalcomplex dye and an alkaline agent, the dyes then being fixed on the material, e.g. by moist dwelling processes or by steaming, thermosoling or drying at an elevated temperature. The reactive dyes preferably contain a vinylsulphone group or a group which forms a vinyl sulphone group in alkali. The ratio of cellulose to polyamide fibres is preferably 50:50 to 85:15, conventional dyeing assistants may also be employed in the padding liquors.
Patent GB-717618-A (GB)
Title: Improvements relating to cooling food cabinets or safes
Inventor: MAY JACK
IPC: F25D7/00
Filed: 1952-04-08
Abstract: 717,618. Refrigerators. BERKEFELD FILTERS &. WATER SOFTENERS, Ltd. March 27, 1953 [April 8, 1952], No. 8971/52. Class 29 [Also in Group V] In cooling cabinets the walls of which are cast of porous material, e.g. plaster of Paris, from the surface of which water is evaporated, a hydrolyzed solution of ethyl silicate in aqueous medium free from organic solvents is incorporated in the porous material before casting to harden it and prolong its life. The solution is added to the water used to make the plaster in the proportion of 50 parts plaster to 1 part ethyl silicate solution by weight. When the cast has dried it may be treated with a water repellant substance, e.g. a silicone or the vapour of dimethylchlorosilane to a depth of not more than 1/16 inch. The cooling cabinet comprises an open-fronted box 1 of plaster of Paris cast in one piece with a lining 2 of aluminium or stainless steel, and water is placed in a depression 4 at the top, the surface of which is not treated with the water repellant substance. Feet 3 are cast at the bottom and a door 6 also cast of plaster of Paris is hinged to the open front and provided with a plastic or metal handle 11. The door is sloped backwards so as to be self-closing. Gypsum powder may be placed in the reservoir 4 to avoid solution of the plaster wall.
Patent GB-674393-A (GB)
Title: Apparatus for deep fat cooking
Inventor: HUNTER HERBERT THOMAS
IPC: A21B5/00
Filed: 1950-04-12
Abstract: 674,393. Frying-apparatus for doughnuts and the like. DOUGHNUT CORPORATION. April 12, 1950, No. 8983/50. Class 28 (i). [Also in Group V] Frying - apparatus for doughnuts, &c., camprises a tray conveyer which carries dough rings into a prover and thence into a deep fat fryer where they leave the trays and are directed towards moving carrier elements within the fryer. As shown, a dough cutter 22, (see Group V), deposits dough rings on trays 52 suspended from a conveyer 50 which carries them through a closed proofing chamber, along a sinuous path defined by rollers 68, 70 and then into a fryer 82 where the dough rings are left in the liquid fat. The dough rings are then propelled forwardly by air blower 110 towards a conveyer 100 which moves the rings through the fat to a turnover mechanism 106 and thence to the discharge end of the fryer.
Patent GB-483415-A (GB)
Title: Improvements in or relating to upholstery padding
IPC: A47C27/12
Filed: 1937-03-30
Abstract: 483,415. Compound sheet materials. FOWLER, D. R. F. March 30, 1937, No. 9031. [Class 140] [Also in Group IX] Upholstery padding comprises sheets, films, or veils A of dry carded stiff fibre such as sisal, Spanish moss, or Tampico fibre interspersed as shown. in perspective view in Fig. 5 with veils &c. B of a dry carded more flexible and resilient fibre such as cotton, soft jute or flax. Each veil has overlapping portions, which may be produced by a folding operation, in which the fibres lie at an angle to each other. The padding may be built up in part of a series of composite layers, each made up of a sheet of sisal and a sheet of cotton folded backwards and forward upon themselves so that the fibres in overlying folds lie at an angle to the fibres in the underlying folds. The layers may be united by lines of stitching C formed by thread or by lengths of fibre needled therethrough and the padding may have a backing of burlap. Portions of the padding for example the parts contacting with supporting springs may be composed of layers of the stiffer fibres only The padding may be made in continuous belts or webs, the film &c. from the carding machine being folded at such an angle as to form a layer twice the thickness of the film, or in part the thickness of one or of more than two films.
Patent GB-1495426-A (GB)
Title: Time division multiplexed data transmission system
IPC: H03K3/84
Filed: 1975-03-05
Abstract: 1495426 Pseudo random number generators WESTERN ELECTRIC CO Inc 5 March 1975 [11 March 1974] 9068/75 Heading G4D [Also in Division H4] In a time division multiplex data transmission system, data at a plurality m of parallel inputs is scrambled before multiplexing by bits at respective word bit outputs of a pseudo random word generator providing a pseudo random sequence of parallel word bit outputs. The generator comprises bi-stable cells interconnected with a plurality of modulo 2 adders. The modified data received at the demultiplexing end of the system is treated similarly. In the prior art it is normal to scramble multiplexed data with serial pseudo random words in order to avoid D.C. drift in idle conditions. However at high transmission rates (e.g. around 274 mb/s.) the design of error free pseudo random generators becomes-critical and expensive. The present invention avoids this problem by modulo 2 adding the input data on each channel before multiplexing with respective bits of parallel pseudo random words, so that the pseudo random word rate should be the same as the individual channel bit rates. At the multiplexer terminal, data from sources 1-6 (Fig. 2) is passed to scramblers 22-1, 22- 6 respectively in the form of modulo 2 adders each of which receives a respective bit from the parallel words produced by the pseudo random word generator 26. The modulo 2 adder outputs pass to a multiplexer 20 where they are stored until called by the multiplex cycle control inputs. In the multiplex operation, signalling bits must be sent periodically in the multiplex frame and it is necessary for the pseudo random generators to skip when these pulses are sent. Pseudo-random parallel word generator (Fig. 5).-In normal operation the AND gates N are enabled by a signal on the "Normal" Mode input line. The arrangement makes use of seven D type flipÀflops, the 3 bit parallel word outputs being derived from flip-flop DEF (44-46). These flip-flops respond to the outputs from the flip-flops A-C (41-43) which are themselves activated by outputs from the modulo 2 adders 56-54. These receive as inputs signals from different pairs of the flip-flops D-G. The configuration is such that output words are obtained in correspondence with those which would have been obtained from a conventional series 7 cell maximal length feedback register pseudo random generator clocked at a three times greater rate (Fig. 4, not shown). In order to inhibit the generator when control bits are transmitted through the multiplex, a skip command is applied to the mode input in such a way that signals are redirected within the arrangement and 3 "1"s are produced at the outputs of the flip flops DEF; thus the control signals will pass in clear.
Patent GB-982265-A (GB)
Title: Improvements in or relating to the production of 16ª-alkylthio-17ª-hydroxy-steroids
IPC: C07J75/00
Filed: 1963-03-07
Abstract: The invention comprises a steroid having the D-ring represented by the partial formula <FORM:0982265/C2/1> wherein R is an alkyl radical having 1-8 carbon atoms and R11 is a hydrogen atom or an alkanoyl group having 2-9 carbon atoms and a process for the preparation thereof by reacting a 16b -alkylthio-17-oxo steroid with a reducing agent to produce a 16b -alkylthio-17-hydroxy steroid, if necessary followed by acylating the latter to a 16b -alkylthio-17-alkanoyloxy-steroid. There may be present in the products so obtained a substituent(s) which may be hydroxyl, alknoyloxy having 2-9 carbon atoms, oxo, alkylenedioxy having 2-3 carbon atoms, alkyl having 1-8 carbon atoms and alkoxy having 1-8 carbon atoms and less than 4 double bond(s) at any positions on the A-ring and the A- and B-rings respectively. As reducing agent there may be used lithium aluminium hydride, sodium borohydride, or a combination of sodium or potassium with an alkanol, e.g. methanol or ethanol. Specification 978,540 is referred to.
Patent GB-915731-A (GB)
Title: A device for producing drawings and the like
IPC: B43L1/12
Filed: 1960-03-15
Abstract: 915,731. Repeatedly usable writing tablets; writing-machines. CHAZE, P. March 15, 1960 [May 28, 1959], No. 9182/60. Classes 146 (2) and 146 (3). A device for producing lines, drawings, or the like on a translucent surface comprises a casing 1 provided with an upper surface 4 of glass and partly filled with a powdery metallic material such as aluminium powder, capable of adhering to the glass and rendering it opaque, and a movable stylus 10 frictionally engaging the inner surface of the glass, so as by its movement to remove material adhering thereto to form lines visible from the outside of the casing, the lines being wiped out upon inverting and shaking the casing. Small balls of glass 9 are mixed in with the powdery material to facilitate a uniform adherence between the material and the glass. The stylus is slidable along two rods 11, 12 disposed at right-angles and movable in orthogonal directions by means of two endless cables passing around pulleys 15, 16 rotated by two knobs projecting externally of the casing. Several arrangements of cables for actuating the stylus are described.
Patent GB-1440878-A (GB)
Title: Cleaning apparatus for exhaust gas from an internal combustion engiane
IPC: F01N3/02
Filed: 1974-02-28
Abstract: 1440878 Purifying I.C. engine exhaust gas K AOI 28 Feb 1974 [25 June 1973 28 Sept 1973] 9208/74 Heading B1W I.C. engine exhaust gas purifying apparatus comprises a cleaning chamber 1 containing at least one means 5a, 6a, for subjecting the gas to adiabatic expansion whereby its temperature is reduced, a further chamber 7a in which condensation occurs and a collection chamber 8a separated from the preceding chamber by heat-resistant multi-apertured walls 9a and containing a mass of heat resistant filter material 10, for separating from condensed moisture, solid material entrained therein, an auxiliary treatment means 14 disposed bellow the cleaning chamber comprises an expansion chamber 15, a condensation chamber 16a, 16b, a gas outlet 20 and a waste liquid outlet 22, and a waste liquid pipe 13, connecting the cleaning chamber 1 with the expansion chamber 16a. The filter 10 may be glass wool. Three similar expansion stages are provided before, the gas leaves cleaning chamber 1 via a chamber 11 containing a baffle. A filter 21 is provided at outlet 20 from the auxiliary treatment means 14. In a modification, Fig. 2, tube 22, the tank 19 in which waste liquid accummulates contains a filter layer 23 containing a neutralising substance e.g. calcium hydroxide or sodium hydroxide. Waste liquid can be withdrawn from tank 19 through pipe 24 fitted with ionexchange resin 25. A duct 2 for cooling air is provided.
Patent GB-1092932-A (GB)
Title: Platform bodies for vehicles
Inventor: CRAMER ERNST WILHELM GUSTAV
IPC: B60P7/13
Filed: 1965-03-04
Abstract: 1,092,932. Vehicle platforms. BRITISH PETROLEUM CO. Ltd. March 4, 1965 [March 18, 1964], No. 9233/65. Heading B7B. A vehicle platform comprises a number of pallets 4 having tubular slides 6 along their undersides to engage the flanges of top-hat section rails 3 secured to the chassis longitudinals 2. The pallets may have integral upstanding panels 7 to form side walls or these panels may be detachably secured to uprights 8 secured to the ends of the rails 3. Stops 15 on the rails co-operate with hinged plates on the rail ends to secure the pallets in position.