baber/WOPTO huggingface dataset:
Patent GB-1188748-A (GB)
Title: Crystal-Controlled Transistorized Oscillator
IPC: H03B5/36
Filed: 1968-09-25
Abstract: 1,188,748. Transistor oscillator circuits; frequency modulation. SIEMENS A.G. 25 Sept., 1968 [26 Sept., 1967], No. 45429/68. Headings H3R and H3T. In a crystal controlled oscillator the crystal, whose resonance frequency is selectable within a wide frequency band, for the purposes of compensation has its parallel capacitance incorporated into a bridge circuit arranged between two transistors, and the output of the second transistor is fed back to the input of the first via a network producing a phase-shifted voltage which is substantially constant in phase-angle and amplitude over the range of frequency determined by the crystal. Transistor Ts1, in common emitter connection is coupled to transistor Ts2, in common base connection via crystal CQ and step-down transformer U3, the parallel capacitance of the crystal being tuned out by means of inductance L3. The crystal is connected in a bridge neutralizing circuit comprising transformer U2 and capacitor C2 which is parallel resonated with inductance L2; the turns ratio of transformer U2 are chosen so that capacitor C2 is of much lower value than the parallel capacitance of the crystal. The primary inductance of transformer U3 is made parallel resonant, at the centre of the frequency range, with the stray capacitance Cp, while the leakage inductance is series resonated by means of capacitor C3. The collector circuit of transistor Tsl is loaded by means of resistor R4, in series with a circuit comprising inductance L4 and capacitor C4 series resonant at the centre of the frequency range. Ferrite beads surround the collector leads of the two transistors to prevent spurious oscillations. The collector load of transistor Ts2 comprises step-down transformer U4, the secondary of which feeds transistor Ts3 via series circuit L5, C5, R6, also resonant at the centre of the frequency range, the transistor Ts3 providing an output via step-down transformer U5. Transistor Ts2 is back-coupled to the base of transistor Ts1 via a feedback circuit comprising resistor R3 and a phase-shifting network comprising transformer U1, resistor R1 and inductance L1 and capacitor C1. A temperature-dependent resistor R2 shunting the resistor R1 provides temperature compensation for the circuit. Oscillation occurs at the frequency at which the phase-shift produced by the crystal is equal and opposite to the phase shift produced by the phase-shifting network, and this may be varied by variation of capacitor C1. To provide frequency modulation, capacitor Cl may be replaced by a varactor diode CV to which is applied the modulating signal U mod  via capacitor C km  and also a standing D.C. bias from potentiometer P m .
Patent GB-1202740-A (GB)
Title: Film circuits
Inventor: ABRAMS HALLE
IPC: H01L49/02
Filed: 1967-10-06
Abstract: 1,202,740. Glass, glass-metal mixtures; coating with glass. WESTERN ELECTRIC CO. Inc. 6 Oct., 1967 [6 Oct., 1966], No. 45746/67. Heading C1M. [Also in Divisions C3 and H1] In a combined thick and thin film circuit (see Division H1), a cross-over region between a thick film glass frit conductor and a thin film circuit element is provided by a glass dielectric. An alumina, glass or ceramic substrate has screen printed on it a frit mixture of 15% platinum, 55% gold, 10% ethyl cellulose, 10% butyl cellusolve acetate and 10% of a mixture of glass forming oxides such as lead oxide, bismuth oxide and titanium dioxide to form contact pads and the same mixture except that the gold and platinum are replaced by 70% gold to form conductors. The frit patterns are then fired at 1000 C. for 75 seconds. A frit mixture for forming insulating cross-over regions between conductors of the thick film and/or thin film resistors is screen printed on to the appropriate portions of the thick film circuit and comprises 32% silicon dioxide, 14% barium oxide, 20% lead oxide, 2% aluminium oxide, 5% calcium oxide, 5% boron oxide, 1% potassium oxide, 1% sodium oxide, 2% ethyl cellulose, 10% α-terpineol, 5% #-terpineol, 1% terpene hydrocarbons and 2% of other tertiary alcohols boiling in the α-terpineol range. The frit is then fired at 1000 C. for 5 minutes. A film of tantalum nitride is deposited on the substrate and photo-etched to provide the required thin film circuit.
Patent GB-1241240-A (GB)
Title: New phthalocyanine dyestuffs and processes for their manufacture and use
IPC: C09B62/537
Filed: 1969-09-18
Abstract: 1,241,240. N - phenyl - N, #-sulphatoethylamine. CIBA-GEIGY Ltd. 18 Sept., 1969 [24 Sept., 1968], No. 46063/69. Heading C2C. [Also in Division C4] In Example 6 N-phenyl-N, #-sulphatoethylamine is prepared by reacting N-phenyl-N; #-hydroxyethylaxnine with chlorosulphonic acid in presence of carbon tetrachloride. The product recrystallizes from alcohol m.p. 203- 205‹ C.
Patent GB-1101189-A (GB)
Title: Improvements in or relating to display units
Inventor: BANNISTER BRIAN CHARLES
IPC: A47F5/13
Filed: 1963-11-21
Abstract: 1,101,189. Releasable fastenings. MARLER HALEY (BARNET) Ltd. 22, Feb., 1965 [21, Nov., 1963], No. 46091/63. Headings E2A and E2B. [Also in Division A4] A display stand or bracket arrangement has support tubes 1, 2, 3 threadalbly connected to anchor members 4, 5, 6 which are secured to a ceiling, wall or floor, shelves 7, 8 or panels being supported between the tubes by clamps such as clamps 9, 10. Clamps 12 are mounted on arms pivoted to the lower ends of the tubes. In a modification Fig. 8 a shelf is supported by a square block with support arms 34.
Patent GB-998404-A (GB)
Title: Treatment of cellulosic materials
IPC: D06M13/207
Filed: 1961-12-06
Abstract: Cellulosic materials, e.g. cotton gauze and viscose rayon, are stabilized against yellowing when subjecting them to storage, hot air drying or sterilization employing steam or high energy radiation from an electron beam, Roentgen ray machine or cobalt 60, by treating them with a combination of treating agents including citrate ions, calcium ions and nitrate ions, the treating agents being applied to the cellulosic materials in amounts sufficient to improve the stability of the cellulosic materials against discolouration.  The cellulosic materials may be treated with a combination of treating agents in aqueous solution including citrate ions, calcium ions and nitrate ions, each in a concentration of 0.001-1% by weight of aqueous solution, the preferred treating agents being calcium nitrate and citric acid.
Patent GB-1010893-A (GB)
Title: Improvements in or relating to root crop harvesting implements
IPC: A01D15/02
Filed: 1961-12-27
Abstract: 1,010,893. Root crop harvesters. C. M. ANNETT. Dec. 21, 1962 [Dec. 27, 1961], No. 46247/61. Heading A1F. A rootcrop harvester is mounted on the lift links 14, 15 of a tractor and comprises a frame 10 supporting a share 18 which has tines 22 diverging rearwardly from it, further tines 23 being provided and emanating from a point behind the share. Side members 25 consisting of a number of projecting tines 27 converge rearwardly and are adjustable for height and for pivotal movement laterally.
Patent GB-1329713-A (GB)
Title: Process for the manufacture of organopolysiloxanes
IPC: C08F283/12
Filed: 1970-09-29
Abstract: 1329713 Grafted organopolysiloxanes STAUFFER-WACKER SILICONE CORP 29 Sept 1970 [29 Sept 1969] 46262/70 Heading C3G A modified organopolysiloxane is obtained by graft polymerization of at least one ethylenically unsaturated monomer on to an organopolysiloxane by a free radical mechanism. The monomer being added to a preformed mixture of the organopolysiloxane and a free-radical initiator at such a rate that the polymerization temperature remains substantially constant. Specified organopolysiloxanes include polymers and copolymers containing dimethylpolysiloxane, diphenylpolysiloxane and/or methylphenylpolysiloxane units and cyclic siloxanes e.g. octamethylcyclotetrasiloxane. The modified organopolysiloxanes may be cured using crosslinking agents e.g. polyalkoxysilanes, and polyalkoxysiloxanes and catalysts. In the example, a hydroxyl-terminated dimethylpolysiloxane is grafted with styrene using tert.-butyl peroctoate as initiator.
Patent GB-1216647-A (GB)
Title: Motor driven tow for swimmers
Inventor: BOTTGER BERNARD
IPC: B63H5/14
Filed: 1969-09-22
Abstract: 1,216,647. Motor-driven tow for swimmers. B. BOTTGER. 22 Sept., 1969 [23 Sept., 1968], No. 46543/69. Heading B7A. In a tow for swimmers comprising a float 13, an internal combustion engine 1 carried by the float, a propeller 6 driven by the engine and a fuel tank 15, the engine is suspended from below the float. Intake pipe 17 supplies combustion air to the engine from the interior of the float which is connected to the atmosphere by snorkel 16. In the embodiment shown, the float 13 and fuel tank 15 consist of chambers formed within hollow member 12 which is subdivided by partition 14.
Patent GB-1486605-A (GB)
Title: Removal of sulphur dioxide from gaseous carriers
IPC: B03C3/013
Filed: 1974-10-29
Abstract: 1486605 Electrostatic precipitaters US FILTER CORP 29 Oct 1974 [29 Oct 1973] 46849/74 Heading B2J [Also in Division C1] In a wet type of electrostatic precipitator the thin film of liquid which passes over surfaces of the collector electrodes, downstream of the charging elements, to remove charged particulate contaminants from waste gas passing through the apparatus comprises a solution of a mono-ammonium phosphate and a di-ammonium phosphate, in which the ratio of monoto di-ammonium phosphate is in the range of 4:1 to 10:1. This phosphate mixture removes SO 2  from the waste gas by absorbent contact therewith, and in order to assist this the collector electrodes may be so disposed as to produce a serpentine gas flow therepast.
Patent GB-1195768-A (GB)
Title: Power Supply Arrangements for Electron Beam Furnaces
IPC: H02M3/315
Filed: 1968-10-03
Abstract: 1,195,768. Converting and supply systems for electron beam furnaces. AIR REDUCTION CO. Inc. 3 Oct., 1968 [17 Oct., 1967], No. 46994/68. Headings H2F and H2H. A supply system for the electron gun of an electron beam furnace is provided with means for removing the supply to the gun should arcing occur in the furnace. An electron beam furnace 42 includes a crucible 43, an electron gun 14 comprising a cathode 46, an accelerating anode 47 and a beam deflecting magnet 50. The cathode 46 is supplied from a three phase A.C. source 12 by way of a full wave rectifier 17, an inverter and frequency multiplier 25, a step up single phase transformer 30 and a second full wave rectifier 35. The inverter 25 includes two back-to-back connected thyristors 15, 16 which are triggered alternately by a trigger circuit 27 to give the required frequency at the primary winding 28 of the transformer 30. Should arcing develop in the furnace 42 a potential will develop across a resistor 41 and this voltage, when applied to the trigger circuit 27 inhibits the development of firing pulses for the thyristors 15, 16 thus cutting off the supply to the furnace. In a second embodiment a parallel type inverter is used and the rectifier 17 may comprise controlled rectifiers the operation of which is inhibited by the signal developed across resistor 41 when arcing occurs in the furnace.
Patent GB-1357437-A (GB)
Title: Oxazolodinone-containing epoxy resins and process for their pre paration
IPC: C08G59/26
Filed: 1971-10-11
Abstract: 1357437 Epoxy resins DOW CHEMICAL CO 11 Oct 1971 [12 Oct 1970] 47250/71 Heading C3B Oxazolidinone modified epoxy resins have the formula  in which Z is the residue after removal of glycidyl groups of a polyglycidyl ether (II) of a polyhydric compound; X is O or S; n = 1-10. I may be prepared by reacting II, e.g. of a dihydric phenol, polyoxyalkylene glycol or of a novolac resin with (thio)cyanuric acid (III) at 130-180 C. in the presence of a catalyst which is an alkali metal halide or alkoxide, tertiary amine, quaternary ammonium compound or a phosphonium compound using a molar ratio of II : III of 3À1 : 1 to 9À7 : 1. I may be cured by conventional epoxy resin curing agents, e.g. methylenedianiline or dicyandiamide.
Patent GB-1092859-A (GB)
Title: Battery cages
Inventor: BROWN ALAN MAXWELL
IPC: A01K31/17
Filed: 1965-11-09
Abstract: 1,092,859. Battery cages; feeding troughs. THORNBER BROS. Ltd. Nov. 7, 1966 [Nov. 9, 1965], No. 47539/65. Heading A1M. In a battery cage assembly in which a food trough extends alongside a row of cages the back wall of the trough comprises two plates 16, 17 the plate 17 being manually movable so as to vary the effective height of the back wall and means being provided for retaining the plate 17 in adjusted position. The plate 17 preferably slides between plate 16 and the front of the cages and has a horizontal flange 18 over which engages a lip 23 of a deflector plate 22, the lip 23 being supported on upright posts 21 secured to the front of the cage aseembly. The wall of the cage assembly adjacent the trough comprises two parts, a lower part in which the spacing of the bars is sufficient to allow chicks to poke their heads through and which can be shut off from the food trough by means of plate 17, and an upper part in which the bars are spaced further apart to allow older chickens to reach food in the trough. A removable barrier is provided for the upper part.
Patent GB-1354947-A (GB)
Title: Identification systems and identification transmitters therefor
IPC: G01S13/75
Filed: 1971-10-15
Abstract: 1354947 Transponders STIFTELSEN INSTITUTET FOR MIKROVAGSTEKNIK VIO TEKNISKA HOGSKOLAN I STOCKHOLM 15 Oct 1971 [15 Oct 1970] 48168/71 Heading H4L  A mobile transmitter 26, 27 receives a signal from a monitor station 20, multiplies it with a non-linear device 26, applies a coding modulation, and retransmits to a receiver 23 at the monitor station which decodes at 24 and thereby identifies the mobile transmitter. The system is used for traffic identification purposes (Fig. 1, not shown). The frequency multiplier 26 employs a varactor diode, which doubles the frequency in the example given. The coding involves selected separations of pulses in a train; and the received and transmitted frequencies are 10 and 20 GHz respectively. The mobile transmitter may be passive (Fig. 3, not shown), the received signal from the monitor station having its frequency cyclically varied over a given range, for example, 9 to 10 GHz, the doubled frequency of the transmitted frequency consequently varying cyclically between 18 and 20 GHz. The coding is effected by parallel-connected series resonant circuits using unterminated transmission lines (Fig. 4, not shown) arranged 37 to reduce the amplitude of either the received or the transmitted signals at the resonant frequencies, these being selected to be within the appropriate range of cyclic variation. The signal received at the monitor (Fig. 6, not shown) is supplied to a registration unit 24 which identifies the coding.
Patent GB-1474380-A (GB)
Title: Loader vehicles
IPC: E02F9/22
Filed: 1973-10-17
Abstract: 1474380 Shovelling machines MASSEYFERGUSON-PERKINS Ltd 14 Oct 1974 [17 Oct 1973 14 Nov 1973] 48254/73 and 52944/73 Heading E1F In the hydraulic actuating system of a shovelling machine is provided an auxiliary valve 31 that is operative to interconnect the hydraulic boom lift motor 8 to a bucket motor 11 so as to cause the motor 8 to urge the boom in a lowering direction upon actuation of the motor 11 to urge the bucket to roll backwards. Preferably the motors are rams. In the embodiment shown the auiliary valve 31 is operated, as are control valves 36, 37 of the motors 11, 8, manually and the control lever 19 of the auxiliary valve is located adjacent the control lever 18 of the bucket motor control valve 36 so that one handed operation of both valves is possible by the operator of the machine. In another embodiment the desired actuation of the valve 31 is obtained by lost motion connection between the valve 31 and the independently manually operated control levers 18, 19.
Patent GB-1381313-A (GB)
Title: Fuel element for nuclear reactors
IPC: G21C3/62
Filed: 1972-10-23
Abstract: 1381313 Nuclear fuel elements EUROPEAN ATOMIC ENERGY COMMUNITY 23 Oct 1972 [28 Oct 1971] 48734/72 Heading G6C A nuclear fuel element for a fast reactor comprises fissile material and breeder material in oxide, carbide, or nitride form, the breeder material containing not more than 10% by weight of an aotinide metal and being disposed centrally in the element and surrounded by fissile material. The element may comprise a stainless steel can in which is arranged a central rod or stack of tablets of sintered U-UO 2  breeder material surrounded by particulate fissile material. The actinide metal acts as a " getter " for oxygen and carbon released during fission.
Patent GB-1490108-A (GB)
Title: Sawing machines
IPC: B27B29/08
Filed: 1974-11-12
Abstract: 1490108 Band saws WILLIAM GILLET-GUILLIET-RENNEPONT 12 Nov 1974 [13 Nov 1973] 48804/74 Heading B5L In a machine for cutting timber using a band saw 1 a carriage 5 is movable parallel to a lateral stop 3 for regulating the thickness of the cut timber and parallel to a device 4 for ejecting the cut timber, and at least one element 9a or 9b movable transversely of the carriage may be raised or lowered above or below the upper surface of the carriage, and transverse arms 11 on a shaft 12 may be retracted below the carriage upper surface into a horizontal position or rotated to a vertical position. The carriage 5 is slidably mounted on two guides 6, being coupled by a cable 7 to a motor unit, and carries, as shown, two elements 9a, 9b which comprise endless chain devices. Each chain 20, Fig. 2, passes over a pair of sprockets 21, 22, the sprocket 21 being driven by motor units 10a, 106 and the sprockets 21, 22 of each chain are mounted on a pivoted arm 23 which can be raised and lowered by a jack 24 so that the chain may be raised into an operative position and lowered into an inoperative position. Arms 11 are secured to the shaft 12 which is rotatable by a device 13. A suction cup 14 and transverse arms 15 are provided on the carriage, the arms carrying rollers 15a and being positioned by levers 16 to positions below the upper surface of the carriage or positions above that surface. In operation a plank is delivered from a storage area to the carriage and the raised chains 20 are operated to draw the plank on to the carriage, the plank is held thereon by the suction cup 14 or by clamps and the carriage is moved along the guides 6 to cause the saw to remove the rough edge 25a, Fig. 2 of the plank. The plank is then cut by applying the plank against the abutment 3 by the chains 20 and feeding the carriage past the saw. The waste piece remaining after sawing is removed by arranging the carriage opposite the device 4 and raising the arms 11 to move the waste on to the device 4. A flitch may be applied temporarily against the abutment 3 by the arms 11 and then by a roller, the flitch then being sawn as the carriage moved along its guides 6. The or each chain device may be positioned on the carriage to suit the length of timber to be sawn.
Patent GB-1002882-A (GB)
Title: Halo-aryl sulphides
IPC: C08G75/14
Filed: 1962-12-28
Abstract: A lubricating oil contains in solution a resinous haloaryl polysulphide having a softening point instead of a melting point and if possible formula <FORM:1002882/C4-C5/1> wherein X is halogen, m and p are each 1-5 or one of them may be 0 and n is variable but may be e.g. 2 or 3.  The resinous polysulphide may have been prepared previously or it may be made in situ from a non-resinous haloaryl polysulphide by heating at 85-230 DEG  C. until a stable solution is formed after cooling. Specified oils are petroleum oils, naphthenic oils, diphenyl, diphenyl oxide, trichlorobenzenes or their mixtures with tetrachlorobenzenes, chlorinated diphenyls, dodecylbenzenes, terphenyls, decalin and higher alkylbenzenes. There may be used also additives such as triethylamine, ethanolamines (e.g. triethanolamine), dimethyl- or diethyl-anilines and cyclohexylamine.ALSO:The invention comprises resinous haloaryl polysulphides having softening-points instead of melting-points and which are soluble in aliphatic hydrocarbon oils.  The polysulphides may have the formula <FORM:1002882/C2/1> wherein X is halogen, m and p are each 1-5 or one of them may be O and n is variable but may be, e.g., 2 or 3; they are prepared by heating a haloaryl polysulphide at above 80 DEG  C. until it ceases to be crystallizable.  The starting material may be prepared by reacting a sulphur-halide (in examples, S2Cl2) with a polyhaloaryl compound (e.g. trichlorobenzene such as a 1,2,3- and 1,2,4-isomer mixture) in presence of a Friedel-Crafts catalyst (e.g. AlCl3).  In examples, (a) the specified trichlorobenzene mixture containing optionally tetrachloro- or dichloro-benzenes is used initially; (b) the specified trichlorobenzene mixture containing both tetrachlorobenzenes and pentachlorobenzene is used; (c) crystalline hexachlorodiphenyltrisulphide was converted to resinous product by heating for 10 hours at 200 DEG  C.; (d) polybromobenzenes or polychlorotoluenes were used initially.
Patent GB-1510919-A (GB)
Title: Potters' wheel
IPC: B28B1/02
Filed: 1976-11-24
Abstract: 1510919 Potters' wheels GABRIEL INDUSTRIES Inc 24 Nov 1976 [4 May 1976] 48906/76 Heading C1J A potter's wheel has (i) a turnable assembly 14 which comprises a turntable 18, having a peripheral rim 62 and a bearing assembly 46 disposed beneath it, and which is detachably mounted on a casing 12 and (ii) a motor housing 64 having a motor mounted therein having a drive shaft 58; a knob 66 serves as a cam which moves the housing 64 with respect to the casing 12 against a spring 90 so that the drive shaft 58 or a drive sleeve 60 can be either engaged with or disengaged from the peripheral rim 62 and the turntable assembly is detachably mounted on the casing 12 by a spindle 26 which is seated in the turntable hub 24 and rotatably and removably seated in the sleeve bearing 32 mounted in the casing hub 30. The trough 20 of the turntable 18 rests on ball bearings 34 which are held in bearing holder 36 (Fig. 3, not shown) and run in the raceway 44 of a bearing race 42 which rests on the casing 12. The race 42 is held on the hub 24 by a retaining nut 56. The casing, turntable, bearing holder and bearing race can be made of polystyrene and the ball bearings can be of polypropylene.
Patent GB-1024100-A (GB)
Title: P-xylene recovery
Inventor: STRAND CARL PALMER
IPC: B01D9/00
Filed: 1964-12-02
Abstract: p-Xylene is recovered from liquid mixtures containing 9-98% weight of p-xylene together with lower melting materials by (a) cooling to form a slurry of crystals of p-xylene in a liquid comprising the other feed components and some p-xylene; (b) separating into liquid and crystals containing some residual liquid; (c) introducing the crystals into a washing zone; (d) introducing a wash liquid countercurrently to the flow of crystals; (e) intimately contacting the crystals as separate and distinct particles with the wash liquid in a toroidal flow pattern; and (f) separately recovering wash liquid and high purity p-xylene.  The wash liquid is preferably liquefied and recycled product p-xylene in which case the wash liquor is recycled to the crystallization or may be a C2-C5 alkane or alkene which is separated from other materials by distillation.  The washing step is effected in a rotating disc contactor.