baber/WOPTO huggingface dataset:
Patent GB-1430367-A (GB)
Title: Vacuum chamber
IPC: B01L1/02
Filed: 1972-08-04
Abstract: 1430367 Vacuum chambers DEFENCE SECRETARY OF STATE FOR 7 Aug 1973 [4 Aug 1972] 36446/72 Heading FIX A vacuum chamber 1 communicates with a prevacuum chamber 2 into which articles may be fed through an opening 8 while the chamber 1 is sealed by a valve-member 3. The articles in a holder 18 are placed on the member 3 and when the chamber 2 has been evacuated the member 3 is partially lowered so that the holder 18 can be engaged by a fork member 15 and transferred into the chamber 1 where the holder 18 can be further engaged by a manoeuvring fork 11 after rotation of the member 15 through 90 degrees by magnetic means co-operating with an end 17. The holder 18 has a slot 23 for engagement by a key 24 so that the forks can be withdrawn.
Patent GB-825957-A (GB)
Title: Improvements in devices for increasing or augmenting the momentum of a fluid especially applicable as a lifting or propulsion device
Inventor: BERTIN JEAN HENRI
IPC: B64C23/00
Filed: 1956-11-29
Abstract: 825,957. Jet propulsion nozzles. SOC. BERTIN ET CIE. Nov. 29, 1956 [Nov. 29, 1955; May 3, 1956], No. 36510/56. Class 110(3). [Also in Group XXXIII] A device for direct lift and propulsion of an aircraft comprising a convergent-divergent passage through which ambient air is induced is characterized in that the divergent part of the passage is at least partly bounded by a fluid wall which forms a smooth extension of a mainly convergent physical wall, the divergent fluid wall being constituted by a thin sheet-like jet issuing from a slot-shaped nozzle extending along at least a part of the downstream end of said physical wall and pointing in a direction which diverges substantially from the axis of said passage and is substantially tangential to said physical wall. A convergent duct 1 is surrounded by an annular duet 4 fed with pressure gas from a conduit 5 which issues as a divergent annular jet of gas from a nozzle 3 to form a smooth continuation of convergent duct 1. A flow of ambient air is induced through duct 1 by a jet nozzle 9 or a fan (not shown) or it may be induced by the action of the divergent jet alone. In a further embodiment the duct may be rectangular and bounded on two opposite sides by parallel plates, opposed divergent jets issuing between the inner faces of the plates. Still further, a series of convergent annular ducts are arranged in cascade formation, the divergent jet of one discharging into the adjacent downstream duct.
Patent GB-1380669-A (GB)
Title: Capsule manufacture
IPC: A61J3/07
Filed: 1973-08-01
Abstract: 1380669 Dip-moulding PARKE DAVIS & CO 1 Aug 1973 [2 Aug 1972] 36685/73 Heading B5A Capsules are dip-moulded at A by immersion of pins 20 mounted on bars 21 in gel solution 13 and the coated pins are cooled at B by an air stream from conduit 50 before inversion to position C to stabilize the coating against uneven flow during inversion. The dipping dish 11 containing aqueous gelatine is surrounded by a reservoir 12 and a constant temperature jacket 14. The pin bars 21 enter grooves 34 in inverter discs 33 of an elevator 30 and are retained by flanged rings 35. A pair of pinions 32 connected to the discs 33 engage racks 31 to rotate the discs 2¢ times during elevation. The bars 21 slide out of the grooves 34 on to the platform 4 of the first of a series of driers. The conduit 50 may be flared and contain baffles 53 (Fig. 2, not shown) to ensure even distribution of air flow over the pins 20. Alternatively (Fig. 3, not shown) air may be drawn over the pins 20 by suction applied through a duct (50a) surrounding the elevator.
Patent GB-619570-A (GB)
Title: Improvements in electric resistance welding machines
IPC: B23K11/31
Filed: 1946-12-12
Abstract: 619,570. Hydraulic presses. RESISTANCE WELDERS, Ltd., and GORDON, S. H. Dec. 12, 1946, No. 36768. [Class 69 (ii)] [Also in Group XXII] In an electric resistancewelding machine operated by muscular effort, a hydraulic intensifier 10 between operating and electrode members 38, 53, is inoperative during unopposed electrode motion and is automatically operative when the electrode member 56 encounters mechanical resistance. The intensifier comprises a pedal operated plunger 14 passing through a fixed, pivoted piston 12 working in a fluid cylinder 10 pivoted by a reservoir 20 to an arm 52 of a spot welder. A cage 26 in the cylinder 10 is urged upwardly by a spring 34 overcome by external springs 62 secured to the cylinder 10 to hold a spring-pressed ball 22 clear of a valve seat 24. With the pedal 38 free, lost motion is taken up by the plunger 14 engaging a lower flange 32 on the cage 26 and abutting a further upper cage flange 28 against a cylinder recess 30. In operation the plunger 14 rises and the springs 62 lift the cylinder 10 to lower the electrode 56 ; when the arm 52 and cylinder 10 are retarded by the work the plunger 14, still rising releases the ball 22 to close the valve, automatically operating the intensifier to provide the necessary work force as the pedal 38 is further depressed.
Patent GB-1170384-A (GB)
Title: Combating Pest Insects
Filed: 1968-08-01
Abstract: 1,170,384. Pentaftuorothiotrifiuoroethylene. ALLIED CHEMICAL CORP. 1 Aug., 1968 [15 Aug., 1967], No. 36789/68. Heading A5E. A method of combating pest insects at a locus comprises contacting the locus with an effective amount of pentafluorothiotrifluoroethylene. The active agent is preferably used as a fumigant and may be admixed with a diluent gas.
Patent GB-1535247-A (GB)
Title: Engine ventilation system
IPC: B60K11/00
Filed: 1976-09-06
Abstract: 1535247 Cooling vehicle radiators MOTOREN-UND TURBINEN-UNION FRIEDRICHSHAFEN GmbH 6 Sept 1976 [9 Sept 1975] 36861/76 Heading B7H A ventilation system for a liquid-cooled engine 12 in an endless track vehicle comprises an annular radiator 15 disposed in a separate casing 16 in an engine compartment 11, and a fan 20 driven from a transmission 13 for delivering to the radiator 15 air drawn in from the atmosphere through an intake 21, the casing 16 being shaped so that it is divided by the radiator 15 into two chambers 17, 18 which receive air from the radiator, one chamber 18 communicating with the engine compartment 11 through an aperture 22, and the other chamber 17 communicating with the atmosphere through an outlet 23. Between one-third and one-half of the circumference of the radiator 15 communicates with the engine compartment 11, and air leaves the engine compartment 11 through a second outlet 24 below the outlet 23.
Patent GB-1101951-A (GB)
Title: Improvements in or relating to automatic operators for gas-making plant
Inventor: TAYLOR CLIVE HENRY
IPC: G05B19/06
Filed: 1963-09-20
Abstract: A control system for a cyclic catalytic reforming plant comprises electric motor 1 driving cam-shaft 2, the cams CV2/V -CV15/V operating solenoid valves CV2-CV15 for regulating the discharge of heat gases into the atmosphere, the supply of air for burning the fuel, the flow of fuel, the purging of the plant by steam, and for admitting constituents to react during the gas-making part of the cycle. Additional valves may control the supply of gas and steam to shift conversion vessels or be used for by-passing the boiler.  Cams CV2/S-CV15/D operate a series of monitor switches in a safety circuit whereby the cam-shaft is driven to a position corresponding to a safe condition of the plant in the event of a valve failing to complete its movement satisfactorily. When the safety circuit is broken, relays ER1, ER3, respond and the valves are de-energized to purge the plant. The motor rotates until contacts YY are opened, relays 6 enabling a faulty valve to be indicated by a signal lamp. The relay ER1 is also de-energized by opening of contacts AM1-AM7 due to fault conditions such as low temperature.  A push-button 9 must be actuated to re-start the system after failure.  A multi-pole change-over switch allows selective operation of the plant in several modes.  In the first of these, the plant is brought up to temperature prior to gas-making whilst in a second mode, the plant is kept in a safe stand-by condition.  In another position of the selector switch, the plant is adapted for manual control by switches <PICT:1101951/C4-C5/1> M2-M15.  During heat-up the low steam pressure and low temperature safety alarms are by-passed.  Units A/RT1, A/RT2, time the heating and gas-making parts up the cycle, a switch Q changing the system from time control to temperature control whereby the motor is controlled by relays ER4, ER5, subject to actuation of high-temperature and low-temperature switches.  The shaft has three stopping positions, namely those corresponding to the purging, heating, and gas-making operation.  If two reforming plants are used with one shift conversion unit, simultaneous operation in the gas-making phase is prevented. The cams may be replaced by discs associated with magnetic, optical, or magnetic pick-ups. The relays may be replace by static switches.
Patent GB-1241898-A (GB)
Title: Improvements in or relating to cylinder locks
Inventor: TIBBE GUNTER
IPC: E05B29/00
Filed: 1969-07-24
Abstract: 1,241,898. Locks. G. TTBBE. 24 July, 1969, No. 37243/69. Heading E2A. A set of cylinder locks for an automobile, for example for an anti-theft device, the doors, the glove compartment and the trunk of the automobile, includes at least one cylinder look 1 which has both single tumblers 2 and pairs of tumblers 3, the latter having notches of the same depth, the set of locks having a master key for locking and unlocking all the locks, the key channel of at least the said one cylinder lock being so formed that the master key even if rotated about its axis through 180 degrees, can be inserted in the said cylinder lock, and the set of locks also having an auxiliary key formed with a key profile different from that of the master key so that the auxiliary key cannot lock and unlock all the cylinder locks of the set. The master and auxiliary keys may both have a longitudinal rib, the rib on the auxiliary key extending the full length thereof to prevent the key being fully inserted into trunk and glove compartment locks. The key channel in a lock may have grooves on either side to receive the key rib one of the grooves being formed with a rib receivable in a corresponding groove in the rib of the master key, and the boss of the auxiliary key for fitting in the recess of a lock cylinder may be wider than that of the master key.
Patent GB-766148-A (GB)
Title: Improvements in or relating to reinforced urea-amine-formaldehyde compositions
IPC: C08L61/22
Filed: 1954-12-29
Abstract: A resinous composition comprising an N-methylol primary amine, a water-soluble ureaformaldehyde condensate and 10-60 per cent by weight of a non-reactive fibrous reinforcement can be cured at a pressure of 20 to 100 lbs. per square inch at a temperature of 110 DEG  to 145 DEG  C.  The composition contains 0.25 to 0.65 parts by weight of formaldehyde, 0.25 to 0.65 parts by weight of urea and 0.003 to 0.25 parts by weight of amine, an added acid component, and has a pH of from 6.0 to 9.5.  Specified amines are: (1) aminoalkanes having not more than four carbon atoms per NH2 group; (2) bis (amino-alkyl) ethers having not more than 4 carbon atoms per NH2 group, e.g. bis (3-aminopropyl) ether; (3) a primary amine containing 2 NH2 groups, e.g. hexamethylene diamine.  Specified fibres are glass fibres and other inorganic fibrous material, fibrous polytetrafluoroethylene, fibrous polyhexamethylene adipamide and other nylon polyamides, fibrous polyacrylonitrile and fibrous polyesters.  In Example 3, bis-(3-aminopropyl) ether was added to formalin (pH = 7.3).  Urea was added (pH 7.8) and then sulphuric acid to adjust the pH to 7.2; glass mats were impregnated with the solution at room temperature, air dried overnight and then at 70 DEG to 90 DEG  C. for 45 minutes.  Curing was then effected at 110 DEG C. and 30 lbs. per square inch for 20 minutes.  Specifications 572,245, [Group IV], 688,794 and 695,148, [Group VIII], are referred to.
Patent GB-361151-A (GB)
Title: Lithopone manufacture
IPC: C09C1/06
Filed: 1930-12-13
Abstract: <PICT:0361151/III/1> In order to ensure greater uniformity in the sizes of the particles of barium sulphate and of zinc sulphide in the crude lithopone, precipitation is effected by a continuous process under substantially constant conditions as regards concentration and agitation.  The sizes of the particles are increased during the usual process of calcination, but if the particles of barium sulphate in the crude lithopone are of the same size as those of the zinc sulphide, they cannot be brought up to the optimum size for good covering power without overtreating the zinc sulphide. The conditions of precipitation are selected after preliminary tests and are maintained so that the crude lithopone yields by calcination a product in which the particles of barium sulphate are as large or larger than those of zinc sulphide, e.g. "average particle size" of barium sulphate 0,5-0,8 micron, and of zinc sulphide 0,2-0,5 micron. In an example, the sizes are 0,322 and 0,292 microns after calcination at 835 DEG  C.  In one method of precipitation, the solutions of zinc sulphate and of barium sulphide are run at 11, 10 into a horizontal, cylindrical vessel 5 fitted with stirrers 8 of the propeller type, the rate of flow being such that precipitation is complete when the liquid reaches the outlet.  The lithopone pulp is withdrawn continuously at 12, and the outlet is controlled so as to maintain a constant level. The covering power and the tinting strength of the finished lithopone vary according to the concentrations of the solutions, the rate of flow through the vessel 5, the degree of agitation, the size of the vessel, and the temperature.  Curves are given illustrating the variation in tinting strength as a function of (a) the concentration of the zinc sulphate or of the barium sulphide solution, (b) the rate of flow, and (c) the speed of rotation of the stirrer, and in each case there is an optimum value of the variable in question.  In carrying out the process, any two of these three variables may be kept constant and the third controlled.  The volume of liquor treated per minute may be three times the volume in the vessel 5, and the temperature may be 65 DEG  F.  The end-point of the precipitation may be adjusted in a separate tank.  Specifications 263,119 and 263,120, [Class 95, Paints &c.], are referred to.
Patent GB-377226-A (GB)
Abstract: 377,226. Preventing corrosion. LEWIS W. E., 71, Ashley Street, Charing Cross, Glasgow. April 22, 1931, No. 11894. Drawings to Specification. [Class 123 (i).] Corrosion of oil tanks in ships, due to subsequent filling with sea water, is decreased by dissolving a ferrous salt such as copperas in the water and passing a direct current from an iron or steel anode in the tank to the tank as cathode. The anode is soluble under these conditions. The anode may pass through an insulating bush in the tank wall and may rest on an insulating support within the tank.
Patent GB-1520296-A (GB)
Title: Process for the docomposition of polyurethane resin
IPC: C08J11/18
Filed: 1975-09-15
Abstract: 1520296 Decomposing polyurethanes DAIICHI KOGYO SEIYAKU CO Ltd 15 Sept 1975 [14 Sept 1974 11 Oct 1974 25 July 1975 12 Aug 1975 13 Aug 1975] 37777/75 Heading C3R Polyetherurethane resins are decomposed by heating at a temperature of 50 C. to 180 C. in the presence of (1) an alkali metal alcoholate obtained by alcoholating some or all of the OH groups of an alcohol or of an alkylene oxide adduct of an alcohol or amine with an alkali metal or alkali hydroxide, or (2) the alcoholate (1) and an alkali hydroxide, or (3) a combination of (1) or (2) with a decomposition accelerator selected from: (a) straight or branched chain aliphatic amines, alicyclic amines, heterocyclic amines and aromatic amines, (b) compounds prepared by cyanoethylating the amines (a) or by adding alkylene oxide to partially alkoxylate the amines (a) and (c) compounds containing amide or urea groups. The resins may be in the form of foams or elastomers. The decomposition products after separation and for addition polymerization with an alkylene oxide may be re-used in the preparation of polyurethanes.
Patent GB-1340159-A (GB)
Title: Mortar mixture
IPC: C04B24/38
Filed: 1972-08-14
Abstract: 1340159 Mortars SUDDEUTSCHE KALKSTICKSTOFF-WERKE AG 14 Aug 1972 [18 Sept 1971] 37851/72 Heading C1H A mortar comprises, in per cent b.w., cement 25-85; methylcellulose of 1000-3000 cP 0À5-0À15; HSO 3  group containing melamine- HCHO condensate of 40-500 cP, 1À5-6À0; water soluble nonionic polyacrylamide 0À02- 0À10, the remainder sand and/or limestone, and optionally asbestos fibres.
Patent GB-831359-A (GB)
Title: Process for the production of silicon
IPC: C01B33/02
Filed: 1957-12-05
Abstract: Pure silicon is prepared by depositing a layer of solid silicon of substantial thickness on a hot tantalum carrier, e.g. a wire, from a gaseous or vaporous silicon compound, and cooling the coated carrier, the strength of the carrier, the shape and size of the coated surface, and the extent of cooling being such that some or all of the silicon splits off spontaneously from the carrier. Silicon compounds specified are silane, methylsilane and di-, tri-, and tetra-chloro silane.  A chloro-silane may be decomposed in the presence of hydrogen.  The diameter of a wire may be as low as 1.5 mm. but is preferably at least 2.5 mm.  A wire of rectangular cross-section may have cross-sectional dimensions of e.g. 2 mm. x 3mm. or 2mm. x 5mm. The carrier may be heated by the passage of an electric current, or in the case of a tube by the passage therethrough of a hot fluid. Part of the heat necessary for the decomposition may be provided by a surrounding furnace. The process may be repeated a number of times. A mixture of trichlorosilane and hydrogen in a mol. ratio of 1:3 may be passed over a wire having a diameter of 2.5 mm. (Example 1), or a cross-section of 2 mm. x 5 mm. (Example 2), and glowing at a temperature of 1150 DEG  C.
Patent GB-844891-A (GB)
Title: Improvements in error signal developing means for position programming control system
IPC: G05B19/425
Filed: 1957-12-06
Abstract: 844,891. Electric correspondence control systems. GENERAL ELECTRIC CO. Dec. 6, 1957 [Dec. 11, 1956], No. 38009/57. Class 38 (6). In a servo system for positioning a member in accordance with a control signal derived from a record wherein the phase of the control signal is compared with that in the rotor of a selsyn mechanically linked with the member, and energized from a recorded reference signal, provision is made for stopping the system when the error voltage is excessive, and ignoring error voltages below a predetermined value to avoid hunting due to backlash. As shown (Fig. 1), a reference signal from a magnetic tape 2 is converted to a 3-phase signal at 12 and fed to a selsyn 20 mechanically linked to e.g. the table and head of a machine tool being programmed. A control signal from the tape 2 is fed to a discriminator 34 which also receives a signal from the rotor of selsyn 20. The discriminator 34 produces a square wave A.C. signal with equal positive and negative half-cycles when the two input signals are exactly 180 degrees out of phase, and unequal positive and negative half-cycles when the phase difference is other than 180 degrees, having an average D.C. value whose polarity and magnitude are determined by the direction and extent of the phase difference, and is used to energize one of the windings 26, 28 of the amplidyne 24. The A.C. component of the error signal from the discriminator 34 is separately amplified by a valve 188 (Fig. 3) and rectified at 200, 202 to bias a valve 208 so that it is normally cut off while a valve 210 conducts and energizes a relay 70. If the A.C. component of the error signal is too low or is lost, which occurs when the discriminator 34 receives only one signal instead of two, the negative bias on valve 208 is reduced so that it conducts and valve 210 is cut off, relay 70 is de-energized, and the power supply to the system is cut off. To avoid this occurring when the system is initially switched on a time delay relay 74 allows an A.C. signal to be fed to valve 188 for a predetermined time. Before reaching the amplidyne windings, the D.C. error signal is fed via line 62 (Fig. 4), through a " neutral zone device " 64 wherein two back-to-back diodes 168, 172, biased to an amount determined by potentiometer 164, suppress signals below the level of the bias.
Patent GB-641596-A (GB)
Title: Improvements in or relating to vehicle wheel assembly
IPC: B60B3/14
Filed: 1946-12-31
Abstract: 641,596. Vehicle wheels. TITAN ABRASIVES CO. Dec. 31, 1946, No. 38125. Convention date, April 8. [Class 144 (i)] A detachable wheel has key-hole slots 14 for co-operation with bolts 19 permanently carried by the fixed brake-drum &c. 12, each slot having an enlarged end 14a through which the bolt-head 19c may be passed, the other end of the slot having an enlarged portion 14c, of lesser diameter than the bolt-head, engaged by the neck 19b of the bolt to lock the wheel in its position of use. Preferably, the slots are so arranged that the braking-torque acts in the direction of the locked position of the wheel.
Patent GB-1047158-A (GB)
Title: Improvements in or relating to liquid fuel burners
IPC: F23D5/04
Filed: 1964-09-18
Abstract: 1,047,158. Liquid fuel burners. CONTROLS CO. OF AMERICA. Sept. 18, 1964 [Sept. 25, 1963], No. 38132/64. Heading F4T. A liquid fuel burner comprises a rotatable disc 40 for atomizing the fuel, a first fan 86 for supplying combustion air to a combustion pot 20 and a second fan 90 for recirculating combustion products. The recirculated combustion products are drawn from an upper combustion chamber 21 through a passage 24 between a burner casing 18 and a heater casing 14 and pass through an opening 88 in the bottom of the burner casing 18 and through a deflector 82 to the second fan 90 which moves them outwardly into a feed chamber 28 formed between the pot 20 and the burner casing 18. The combustion air is drawn in through an opening 76 and is directed by a cowling 80 and a flange 84 on the deflector 82 to the first fan 86 which moves the air outwardly into the feed chamber 28. The air and combustion products combine in the feed chamber 28 and then pass through rows of inlets 70, 72, 74 in the cylindrical wall of the combustion pot. The combined mass entering the lowest rows of inlets 70 has a higher concentration of combustion products than the mass entering the highest rows of inlets 74. The two fans are constructed as a unit supported by a closed upper wall 92 mounted on a hub 94 carried by the hollow shaft 42 of the constant speed electric motor driving the atomising disc 40. Each fan has six straight radial blades in vertical alignment but separated by a partition 98 with a central opening. The bottom of the lower fan 86 has a wall 100 with an inlet opening 101. The pot includes a flame spreader 106, upper and lower flame propagators 30, 32, and a pan 34 spaced from the bottom and sides of the pot. The burner is ignited by a spark igniter 38 when a thermostat (not shown) calls for heat. The hollow drive shaft of the motor extends downwardly into a well formed in the lower end of the motor housing and supplied with oil by a float type control. An oil pump impeller is mounted on the motor shaft within the well and has an upwardly facing slot which forces the oil outwardly and downwardly through a ball bearing and up the hollow shaft. The heater casing 14 is connected to an outlet flue.