baber/WOPTO huggingface dataset:
Patent GB-200028-A (GB)
Title: Improvements in geysers for heating water
IPC: F24H1/10
Filed: 1922-12-15
Abstract: 200,028. Owens, C. W. Dec. 15, 1922. Geysers.-Alternate annular and circular trays are supported upon the lowermost tray 2 which is secured to the sides of the casing 1 and provided with an outlet 4. Each of the other trays 5, 9, 13 has legs, resting on the floor of the tray beneath, one or more of which legs being hollow, and extending to receive water from the surface level in the higher tray and having apertures 8 at or near the lower end to deliver on to the lower tray. The circular trays 5, 13, are held centrally in the casing by means of projecting loops on their sides which rest against the wall of the casing 1.
Patent GB-745770-A (GB)
Title: A device for stabilising the voltage of a synchronous electricity generator
IPC: H02P9/38
Filed: 1953-12-10
Abstract: 745,770. Alternators. LICENTIA PATENTVERWALTUNGS-GES. Dec. 10, 1953 [Dec. 11, 1952], No. 34429/53. Class 35. An alternator is compound excited by means of rectifiers G in series with air-gap chokes D canying voltage windings W1 and current windings W4 carrying load currents of the same phase. In a modification a further winding carrying the current of an adjacent phase is added. The output voltage may be further stabilized by means of a saturable reactor in each phase feeding additional current to the field winding, the control of the reactors comprising two windings in opposition, whose currents are regulated by a saturated choke and resistance respectively so that balance only occurs at the required voltage. The airgap chokes D may be short-circuited for initiating excitation.
Patent GB-1065498-A (GB)
Title: Improved speed regulator for gas turbine plant operated with fluid fuel
IPC: H02P23/16
Filed: 1964-08-24
Abstract: 1,065,498. Automatic speed control. ADOLPH SAURER Ltd. Aug. 24, 1964 [Oct. 31, 1963], No. 34459/64. Addition to 955,457. Heading G3R. A speed regulator for a gas turbine as described in Specification 955,457 is modified by the inclusion of a frequency-sensitive control member 24 between generator 10 and solenoid 15, this member replacing the variable resistor of the prior arrangement. The member 24 may be fed directly with the generator current or by a battery simultaneously with the generator current. The frequency of the generator is thus compared with a reference value, any deviation being transformed into variable impedance in circuit with the solenoid 15.
Patent GB-1096600-A (GB)
Title: Fluoro-aromatic substituted heterocyclic compounds
Inventor: LYNCH ERIC ROYLE
IPC: C07D271/107
Filed: 1965-08-12
Abstract: The invention comprises compounds of the formula <FORM:1096600/C2/1> where X is O, S, = NH or = NR11 and R, R1 and R11 are each an aromatic or fluoroaromatic group provided that at least one of R, R1 and R11 is a fluoroaromatic group.  Each group R, R1 and R11 may be phenyl, fluorophenyl, naphthyl, fluoronaphthyl, a phenyl or fluorophenyl group having a second phenyl or fluorophenyl group linked to the first directly or through an oxygen or sulphur atom or through an alkylene, carbonyl or sulphonyl group; or a phenyl or fluorophenyl group having a chlorine or bromine atom as a nuclear substituent and processes for the preparation of an oxadiazole as defined above wherein a hydrazine derivative of the formula R.CO. NHNHCO.R1 is dehydrated; of a thiadiazole as defined above wherein a hydrazine derivative of the formula R.CO.NHNHCO.R1 is reacted with a phosphorus sulphide; of a 3,5-disubstituted 1,2,4-triazole as defined above wherein a hydrazide of the formula R.CO.NHNH2 or R1.CO.NHNH2 is reacted with an aromatic nitrile of the formula R1.CN or RCN in the presence of an acid that forms an acid addition salt with the hydrazide and of a 3,4,5-trisubstituted-1,2,4-triazole as defined above in which a hydrazine derivative of the formula R.CO. NHNH.CO.R1 is reacted with an N-R11-substituted amide of an aromatic sulphonic acid.  The examples describe the preparation of 2,5 - bis(pentafluorophenyl) - 1,3,4- oxadiazole and -thiadiazole, 3,5-bis(pentafluorophenyl) - 1,2,4 - triazole - 3,5 - bis(pentafluorophenyl) - 4 - phenyl - 1,2,4 - triazole, 3,4,5-tris(pentafluorophenyl)-1,2,4-triazole and 2,5-bis(2,3,5,6 - tetrafluorophenyl) - 1,3,4 - oxadiazole.
Patent GB-190912-A (GB)
Title: Improvements relating to fire extinguishing apparatus
IPC: A62C13/00
Filed: 1921-12-22
Abstract: 190,912. Minimax, Ltd., and Gregory, G. A. Dec. 22, 1921. Extincteurs. - Chemical fire-engines and fireextinguishers are provided with a glass acid bottle b encased and bedded in a sheet-metal protecting- casing d and having a narrow sealed neck c, which protrudes from the casing d and is adapted to be broken by means of a screw spindle q or a plunger &c., so as to form a small opening, through which the acid slowly trickles when the bottle and casing are inverted, thus ensuring a slow and steady generation of pressure. The bottle b and casing d are mounted in a holder i having an apertured cover-plate and mounted on pivot spindles carried by standards m, one of the pivot spindles passing through the wall of the outer container a, so that the bottle can be inverted by means of an external handle.
Patent GB-696471-A (GB)
Title: Process for the production of 3.6-dihydro-1.2 oxazines
IPC: C07D265/02
Filed: 1947-12-30
Abstract: 3,6 - Dihydro - 1,2 - oxazines of the general formula <FORM:0696471/IV (b)/1> wherein alkyl groups may be present attached to the carbon atoms of the ring and R represents a hydrocarbon radical, are prepared by reacting butadiene-1 : 3 or an alkyl-substituted butadiene-1 : 3 with a compound of the general formula RNO, where R has the above significance.  In the examples: (1) N-phenyl-3,6-dihydro-1,2-oxazine is prepared and is then treated with hydrogen chloride or hydrogen bromide to give a chloro or bromo derivative in which the exact position of the chloro or bromo substituent in the ring is not known; (2) 1-phenyl-3 : 4-dimethyl-3 : 6-dihydro-1 : 2-oxazine is prepared.  The Specification as open to inspection under Sect. 91 states that the products of the above process are pyrolline-oxides of the formula <FORM:0696471/IV (b)/2> which on being dehydrated yield substituted pyrroles <FORM:0696471/IV (b)/3> or the process may proceed direct to the pyrrole stage.  3 : 4-Oxido-pyrollidinium chloride is obtained by reacting butadiene-1 : 3 and 2-chloro-2-nitrosopropane (prepared by chlorinating acetoxime), and is converted to 3 : 3-oxidopyrrolidine with potassium hydroxide. This subject-matter does not appear in the Specification as accepted.
Patent GB-1527606-A (GB)
Title: Automatic electric battery charging apparatus
IPC: H02J7/00
Filed: 1975-08-20
Abstract: 1527606 Battery charging systems CHLORIDE GROUP Ltd 20 Aug 1976 [20 Aug 1975 (2)] 34611/75 and 34612/75 Heading H2H Battery charging apparatus comprises means for providing a control signal which varies with the battery terminal voltage, a pulse generator controlled by the control signal so as to produce a train of pulses, the average repetition rate of which varies as the control signal and means for initiating the termination of the battery charging process when the rate of change of the average repetition rate falls below a predetermined value. The pulse generator may be of the type producing continuous trains of pulses or of the type producing groups of pulses. A battery is charged from an A.C. source by way of a contactor and a transformer rectifier device, the contactor being controlled according to the average repetition rate of the pulses. The apparatus includes an UP/DOWN counter and two further counters, one of which counts a period in the order of 30 minutes and the other a period of the order of 2 minutes. Whilst the battery is being charged, the pulses are applied during the counting period of two minutes separated by intervals of 30 minutes, the pulses being applied in the up mode and the down mode alternately. If at the end of a pair of counting periods the counter has not returned to the count it had before the first counting period, charging of the battery is terminated. The counting periods are so arranged that the second and subsequent counting periods have durations of about 4% less than the first counting period. Means are also provided such that if the battery terminal voltage is less than a predetermined value at the beginning of a charging period the charger is rendered inoperative. Furthermore if the output voltage of the charger rises above a second predetermined value the charger is switched off. Mains voltage compensation is provided together with lamps to indicate operation of the apparatus.
Patent GB-920652-A (GB)
Title: Suction roll shell and method of making same
IPC: D21F3/10
Filed: 1961-09-27
Abstract: 920,652. Suction rolls of paper-making machines. SANDUSKY FOUNDRY & MACHINE CO. Sept. 27, 1961 [May 29, 1961], No. 34627/61. Class 96. [Also in Groups XIII and XXII] A suction roll shell for a paper-making machine has a tubular metal body which may be made by centrifugal casting in a sand-lined mould and machining externally, and which is drilled with holes 11 which are countersunk at 13 and preferably have a rounded shoulder 14, and are machined after drilling so that they are smooth; the resilient covering C being bonded to the metal at the outer cylindrical surface and at the countersunk surfaces 13. The smoothness &c. of the holes 11 enables the slugs 15, which are formed by drilling the cover C, to be blown out as by an air hose.
Patent GB-893341-A (GB)
Title: Polyhydroxy compounds
IPC: C08G59/06
Filed: 1958-10-29
Abstract: Flame resistant epoxy resins, unsaturated polyesters which combined with monomers containing CH2 = C < groups give polymerizable materials, alkyd resins and saturated polyesters for reaction with diisocyanates to produce cellular foams and surface coatings are prepared from compounds of the formula (Aro)m - R(OH)y wherein Ar is a pentahalophenyl radical, R is a hydrocarbon radical optionally containing an ether linkage, m is a whole number from 1 to 7 and y is a whole number from 2 to 7 (see Group IV(b)).  The above polyhydroxy compounds are reacted with such unsaturated acids as maleic acid or anhydrides thereof and combined with such monomers as styrene, vinyl toluene or diallyl phthalate to obtain polymerizable materials or with epihalohydrins such as epichlorhydrin to obtain epoxy resins. In examples: An epoxy resin is obtained by reacting 2-pentachlorophenoxymethyl-2-ethyl-1,3-propane diol with epichlorohydrin in the presence of sodium hydroxide and heating the product with p,p1-methylene dianiline as catalyst (III) and the same diol is esterified with maleic anhydride, the product p  is mixed with styrene, hydroquinone and benzoyl peroxide and heated to obtain a resin.ALSO:The invention comprises a compound of the formula (ArO)m-R(OH)y wherein Ar is a pentahalophenyl radical, R is a hydrocarbon radical optionally containing an internal ether linkage, m is a whole number from 1 to 7 and y is a whole number from 2 to 7 and a process for the preparation thereof which comprises reacting a hexahalo-benzene and a polyol having the formula R(OH)n wherein R has the meaning given above and n is a whole number equal to the sum of n and y in a proportion of at least n mols of hexahalobenzene per mol of polyol.  The products are employed in the preparation of epoxy resins and polyesters (see Group IV (a)).  The halogen in the hexahalobenzene may be chlorine, bromine, iodine or fluorine, chlorine being preferred.  Polyols specified include trimethylol-ethane-, propane, -hexane and -heptane, 1,2,6-hexanetriol, glycerol, sorbitol, pentaerythritol, di- and tripentaerythritol, dihydroxydurene, ethylene-, diethylene and propylene glycols, hydroquinone, pyrogallol and catechols.  The reactants are preferably heated together in the presence of a solvent and hydrogen halide acceptors such as hydroxides and carbonates of sodium, potassium and lithium and pyridine. Solvents specified include dimethoxy-methane and ethane, acetals such as diethyl and dipropyl acetal and amides such as dimethyl and diethyl formamides. Examples I and II relate to the preparation of 2-pentachlorophenoxymethyl-2-ethyl-1,3-propane diol.ALSO:Cellular foams are produced by reacting diisocyanates with saturated polyesters of compounds of the formula (ArO)m-R (OH)y wherein Ar is a pentaholophenyl radical, R is a hydrocarbon radical optionally containing an ether linkage, m is a whole number from 1 to 7 and y is a whole number from 2 to 7 (see Group IV(b)).
Patent GB-900672-A (GB)
Title: Improved fastening assembly
IPC: F16B37/12
Filed: 1959-10-13
Abstract: 900,672. Screw-sockets &c. YOKOHAMA RUBBER CO. Ltd. Oct. 13, 1959 [April 16, 1959], No. 34721/59. Class 89 (1). A fastening assembly comprises a helical-coil insert 20, Fig. 4, between internally and externally screwed members 16, 19, respectively, and substantially conforming to the threads thereof, a counterbore 17 being formed in member 16 leaving at least one turn of the insert free to be expanded radially against the counterbore-wall and also axially against the face of a workpiece 18 as member 19 is tightened, thus frictionally-locking the assembly. The insert is locked in member 16 by a pin 14, Fig. 1, inserted in opposed slots 11, 13 in the member and insert, respectively. The member 16 may be die-cast around the insert.
Patent GB-290932-A (GB)
Title: Improvements in and relating to robber traps
IPC: E05G5/02
Filed: 1927-12-23
Abstract: 290,932. Rocha, E. M. Dec. 23, 1927. Man-traps.-A hopper-like opening 12 closed by a trap-door 5 is made in front of the usual openings 7, 8, for the tellers &c. of a bank or similar building. The opening leads to a vertical passage 13 beneath which is placed a receptacle 14 having a hinged cover 16 that may be held in an open position by a latch 21. A vertically movable ring 19 maintains the receptacle in alignment with the passage 13. Should an attempt be made to rob the teller he can operate a switch 36 by his knee, closing a circuit that causes the latch 11 holding up the trap door to be withdrawn, thus precipitating any one standing on the trap door into the receptacle 14. At the same time a second circuit permits a shield 41 to fall, closing the windows 7, 8. The bottom of the receptacle 14 is provided with a false bottom 23 which on being depressed closes an electrical circuit that releases the latch holding the lid of the receptacle open, permitting the lid to fall and to be automatically latched. The closed receptacle can be removed after lifting the ring 19.
Patent GB-1278646-A (GB)
Title: Protective barrier
Inventor: SHORROCK STANLEY
IPC: G08B13/12
Filed: 1969-06-19
Abstract: 1278646 Intruder alarms SHORROCK DEVELOPMENTS Ltd 12 June 1970 [19 June 1969 11 July 1969] 31013/69 and 35002/69 Heading G4N A protective barrier or fence comprises a meshed netting, the strands of which include at least two conductors formed by a conductive coating protected by an insulating coating and a continuous current alarm device arranged to respond to interruption of any of said conductors. The ends of the conductors are located in terminal boxes so that the connections may be interchanged at random times. The fence may be formed of PVC- or polythene-coated steel wire with a conductive layer painted on some of the wires and a further protective coating applied to all the wires so that those having a conductive coating are indistinguishable from the others. In the circuit shown, wires 53 and 54 are formed into a loop arranged to operate an alarm device 50, if interrupted; whilst wires 59, 60 are formed into a further loop monitored by alarm device 51. A further alarm device 52 operates if the loops are short-circuited to each other. Alternatively, the current may be passed through the steel cores. The netting may form a self-contained fence or may be buried in a wall and may be used in conjunction with a standing-wave or rotating-beam detector.
Patent GB-1148968-A (GB)
Title: Apparatus for bending glass sheets
IPC: C03B23/031
Filed: 1967-08-01
Abstract: 1,148,968. Binding glass sheets. LIBBEYOWENS-FORD GLASS CO. 1 Aug., 1967 [18 Aug., 1966], No. 35172/67. Heading C1M. Glass sheets are heated, bent and then tempered. The bending is done between complementary mould parts, one having a continuous surface and one being of ring-type. The mould parts are covered with a porous mass of felted metal fibres which contacts the glass and protects the surface.
Patent GB-1006087-A (GB)
Title: Transducer device
IPC: G01D5/18
Filed: 1961-09-29
Abstract: 1,006,087. Multiplying arrangements. HOKUSHIN SEISAKUSHO KABUSHIKI KAISHA. Sept. 29, 1961 [Nov. 11, 1960], No. 32567/61. Heading G4G. [Also in Division G1] A device for forming the product of two currents comprises a thermistor 12 (Fig. 3) having one of the currents fed through it, the other current being fed to a heater coil 11, whereby the voltage drop across the thermistor is proportional to the product of the two currents
Patent GB-1379065-A (GB)
Title: Respiratory appliance
IPC: A63B23/18
Filed: 1972-07-28
Abstract: 1379065 Respiratory appliances M J O'CONNOR 28 July 1972 [28 July 1971] 35469/72 Headings A5K and A5T A breathing device comprises a closed container 2 having a volume of at least 500 cc, a mouthpiece 8 through which air can be inhaled from the container and exhaled into the container, and an end cap 10 closing one end of the container 2 and having openings 12, 14, 14', and (14"), see Fig. 4 (not shown), the openings 14, 14' and (14") being closed by a flap valve 16 so that air can leave the container 10 through the opening 12, but not through the openings 14, 14' and 14". The container 2 can be made from cardboard or rigid plastics. The mouthpiece 8 may consist of a tube of flexible polyethylene fitted into an opening 6 of -a metal end cap 4 of the container. The flap 16 may be made from polyethylene and may be attached to the end cap 10 by a piece of tape 18. The volume of the container may be between 500cc and 3500cc. In Fig. 6 (not shown) the opening (13), corresponding to the opening 12, is fitted with a further flap (19) made from, for example, flexible steel, which prevents exhaled air from leaving the container until, for example, there is a pressure of 15cm. of water above atmospheric in the container. The appliance prevents collapse of the lung (otelactosis) by increasing the force resisting exhalation thereby increasing the pressure in the lungs, and by increasing the percentage of CO 2  in the inhaled air so causing the alveoli of the patient's lungs to dilate.
Patent GB-1454395-A (GB)
Title: Power supply voltage control circuit
IPC: H02M3/28
Filed: 1973-07-26
Abstract: 1454395 Automatic current control VOLSTATIC COATINGS Ltd 19 July 1974 [26 July 1973] 35589/73 Heading G3R [Also in Division H2]  A high-tension supply circuit for an electrostatic spray gun includes an RF oscillator driving a pushpull amplifier connected to a voltage multiplier and rectifier through a transformer. The current delivered to the voltage multiplier is sensed and regulated by controlling a transistor connected in the amplifier supply line. As shown in Fig. 2, mains voltage is connected through a transformer T1, rectifier BR, series transistor TR1, a class D push-pull amplifier G and a rectifier/voltage multiplier of the Cockcroft- Walton type ChR to a spray gun. The amplifier G is driven by an RF oscillator DR which may be formed as a plug-in unit. A control board CB has terminals 2, 3, 5, 9, 14 into which a current-sensing circuit and an overload detecting circuit may be plugged. The current-sensing circuit, Fig. 3 (not shown), is connected to the output winding WS2 of the amplifier G by way of terminal 3. The circuit includes a DC amplifier with an output transistor (TR15) supplying a current at terminal 5 varying inversely with the sensed current and controlling series transistor TR1 so as to adjust the voltage supplied to the spray gun during normal working. The overload circuit, Fig. 4 (not shown), responds to excessive current increase, e.g. due to earthing of the gun electrode, to energize a relay which removes energizing voltage supplied by way of terminal 14 to the oscillator DR. The voltage is automatically restored after a time determined by the charging of a capacitor (C6) in the overload circuit. The system may be used without the current-sensing and overload circuits if the terminals of the control board CB are suitably connected by a plug-in device, Fig. 5 (not shown).
Patent GB-173962-A (GB)
Title: Improvements in stair rods and the like
IPC: A47G27/06
Filed: 1920-12-18
Abstract: 173,962. Williams Bros. & Piggott, Ltd., and Williams, W. R. Dec. 18, 1920. Stair rods. - A stair rod comprises a solid core 1 of segmental or elliptical section having a longitudinal groove 3, which may have inclined sides, provided substantially in the centre of the curved surface and in which the edges 7 of a sheet-metal casing 6 are forced. The slight opening 8 remaining may be closed by rolling.
Patent GB-411770-A (GB)
Title: Improvements in indicating apparatus used in conjunction with apparatus for the remote control of switches, valves or other switching members
IPC: H02B15/02
Filed: 1933-12-19
Abstract: 411,770. Electric signalling systems. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Dec. 19, 1933, No. 35755. Convention date, Nov. 16. [Class 40 (i).] In a mimic circuit diagram type indicator the ends of the lines connected with the representation of a remote switch are made to indicate the position or condition of the remote switch and the control switch is located on the diagram in the position of the remote unit. As shown in Figs. 1 and 2 the switch 3 in the mimic diagram controls a remote oil switch which joins parts of the remote network indi. cated by 1 and 2. The ends 5 of 1 and 2 are formed as indicators and are provided with green lamps 6, 8 and red lamps 7, 9. When the oil switch is in, the green lamps are lit and when the switch is " out " the red lamps are illuminated. Instead of red and green lamps, dim and bright illumination may be provided. The switch 3 may be provided with tapered channels 12 to reflect the light from 6, 7, 8, 9 onto the surface of the switch. The lamps may be arranged to flash when the remote unit and the switch 3 are out of agreement and control from switch 3 may be performed by overturning or by pressing. Instead of being illuminated from the rear, the diagram may be lit by reflected light, or the lighting may be replaced by mechanical devices such as drop indicators and rotary crosses.