baber/WOPTO huggingface dataset:
Patent GB-581685-A (GB)
Title: Improvements in and relating to cooling systems for the lubricating oil of aircraft engines
IPC: F01P7/12
Filed: 1941-09-24
Abstract: 581,685. Automatic control systems for cooling systems. CLARKE ENGINEERING CO., Ltd., H. B., and BUTT, A. G. Sept. 24, 1941, No. 12368. [Class 38 (iv)] Temperature. Two thermostatically controlled devices responsive respectively to the temperatures of oil and cooling air issuing from a lubricating oil cooling system maintain the oil temperature between defined limits and the air temperature above a desired value with a view to the avoidance of " coring " in the oil due to the low air temperature. A reversible motor d, adjusting shutters controlling the passage of air over the cooler, is operated by relays 42, 43, shown in their normal positions in which a mean value of heating current is being supplied to mercury column thermal switches a, b. If the oil temperature falls below 60‹ 'a short circuit on relay coil 42, which includes contacts on the air temperature switch a, is opened at one contact 10 of the switch b and relay contact 27 is energized to give the motor d one impulse in the shutterclosing direction, and also to apply full heating current to the thermal switches, thereby causing intermittent impulses to the motor which become progressively shortened as the oil temperature rises. At an oil temperature of 70‹ the contacts 10, 11 short circuit the relay coil 43, whereupon contact 19 is energized to apply an opening impulse to the shutter motor, and contact 18 is de-energized to cut off the thermostat heating current to cause diminishing intermittent opening impulses. Limit switches 44, 45 are operated by the motor. Should the air temperature fall below 10‹ the short circuit on relay coil 42 is opened at contact 7 and closing impulses are given to the motor in any temperature condition of the oil. The relays may control selector valves for a pulsometer or hydraulic servomotor. The invention may be applied to radiator shutters. Specification 535,494 is referred to. The Provisional Specification describes a similar arrangement adapted to maintain the oil at a constant temperature and employing a single relay.
Patent GB-1368641-A (GB)
Title: Concrete delivery equipment
IPC: B28C5/42
Filed: 1971-04-30
Abstract: 1368641 Concrete delivery equipment SIMON ENG DUDLEY Ltd 10 April 1972 [30 April 1971] 12383/71 Heading B7B A vehicle has a concrete storage tank 11 mounted thereon and a concrete pump 14 of the reciprocating piston type is adapted to draw concrete from the base of the tank and return same to the upper region of the tank, whereby the concrete can be circulated during transport thereof. The pump is preferably operable from an hydraulic pump driven from the vehicle transmission. A flexible hose carried on the vehicle may be connected to an outlet 18 and the concrete conveyed therethrough by the pump 14. An hydraulic ram 19 is used to tip the tank 11 after removal of the rear wall. Also, the vehicle may be equipped with an hydraulically extendible boom structure along which the delivery hose may run for delivering concrete to an elevated site. The tank 11 is equipped with a lid 12 which is provided with hatches for loading and for cleaning purposes.
Patent GB-1349731-A (GB)
Title: Information recording systems employing amorphous materials
IPC: H01L45/00
Filed: 1971-04-30
Abstract: 1349731 Digital data stores ENERGY CONVERSION DEVICES Inc 30 April 1971 [8 June 1970] 12472/71 Heading G4C [Also in Division C7] A store comprises an amorphous film in which bubbles are formed by a modulated beam of electromagnetic energy. The stored data is erasable by heating the film to cause the bubbles to collapse. The beam may be a laser beam, for example. In one embodiment, Fig. 1 (not shown), the beam is directed to successive areas of the film to record each bit. The beam is pulsed, the width and power of each pulse being selected according to the action, Write, Erase, or Read, required. In the Write and Erase modes the laser frequency is such that the beam is substantially absorbed in the film. In the Write mode the power is sufficient to cause local internal vaporization of the film to represent a bit of one state, the resulting bubbles being frozen in as the beam leaves their locality. In the Read mode the laser frequency is such that the beam is not absorbed by the film. A detector senses the radiation passing through the film, the detector output decreasing when the beam passes through an area of bubbles. In the Erase mode the beam energy is sufficient to soften the film but insufficient to cause bubble formation. The store may be Read simultaneously with Writein. The bit read out may be compared with the bit just read in to check for error. In a second embodiment, Fig. 6 (not shown), the detector senses radiation reflected from the film. In a third embodiment, Fig. 6 (not shown), a broad beam of radiation passes through a negative, carrying information to be recorded, and on to the film. In this case the store is erased by an associated heating element. It is stated that analog data may be stored instead of digital data.
Patent GB-737036-A (GB)
Title: Improvements in phosphonation of aromatic compounds
IPC: F04B43/02
Filed: 1953-05-05
Abstract: A process for the preparation of an aromatic phosphonic anhydride capable of hydrolysis to form the corresponding aromatic phosphonic acid comprises heating to a temperature of 250 DEG  to 325 DEG  C. a substantial excess of hexagonal phosphoric anhydride having the formula P4H10 with a carbocyclic aromatic compound free from polar groups capable of reacting with the phosphoric anhydride.  It also comprises organophosphorus compounds of the formula <FORM:0737036/IV (b)/1> in which Ar stands for a carbocyclic aromatic radical united to phosphorus by a carbon to phosphorus bond and being free p substituent groups reactive with phosphoric anhydride.  The primary reaction product from the above process is a brittle solid or viscous liquid of the formula given above, and when benzene, for example, is the aromatic compound.  When substituted benzenes, e.g. chlorobenzene or o-xylene or polycyclic compounds such as naphthalene are used, there is also formed a product which is soluble in the aromatic compound and is believed to be a polymer of a phosphonic acid anhydride ArPO2, where Ar is the aromatic radical.  The primary reaction products are then hydrolysed to phosphonic acids by heating with an aqueous hydrolysing medium.  To yield mono-phosphonic acids at least five molecules of the aromatic compound for each molecule of P4H10 should be used.  After hydrolysis of the pitch or the steam distillation or addition of alkali to the whole reaction mixture the aromatic phosphonic acids separate on cooling their aqueous solutions.  In some cases alkali metal or ammonium salts of the formula ArPO3HM,ArPO3H2, where M is the cation, can be isolated by acidification of alkaline solutions of the phosphonic acids.  Other aromatic compounds to which the invention can be applied are toluene, ethylbenzene, xylenes, biphenyl, diphenyl-methane, naphthalene, tetrahydronaphthalene, phenanthrene, anthracene, fluoranthene, acenaphthene, perylene, pyrene and chrysene, and also halogen compounds such as fluorobenzene, chlorobenzene, di- and trichlorobenzenes and bromobenzene.  In examples: (1) benzene and phosphoric anhydride in the molecular ratio of 20.7 : 1 are reacted at 275 DEG  C.  The product obtained is heated with boiling water to give phenylphosphonic acid.  A table showing the yields for various times of heating, and temperatures between 200 DEG  and 350 DEG  C. is given; (2) using a molecular ratio of 2 : 1 a product containing phenylphosphonic acid and probably diphosphonic acid is obtained. Similarly prepared, from various molecular ratios of reactants are (3) o- and p-tolyl-phosphonic acids; (4) 2 - naphthyl phosphonic acid (molecular ratio of reactants 20 : 1); (5) naphthylene di-(beta-phosphonic) acid (molecular ratio of reactants 5.5 : 1); (6) pyryl-phosphonic acid; (7) chrysylphosphonic acid; (8) phenanthryl-phosphonic acid; (9) o- and p-chlorophenyl-phosphonic acids; (10) 1,2 - dimethylphenyl - phosphonic acids.  The products may be used as starting materials for synthetic resins, drugs, pesticides and lubricant additives.
Patent GB-738336-A (GB)
Title: Improvements in auriscopes and other illuminable magnifiers
IPC: A61B1/227
Filed: 1953-05-06
Abstract: 738,336. Magnifying appliances. BARRADA, H. June 3, 1954 [May 6, 1953], No. 12540/53. Class 97 (1). [Also in Group VI] An illuminated magnifier has a battery-operated lamp projecting into a hollow viewing head, the head having a magnifying lens at one end and a speculum or viewing aperture at the other, and a screening hood, for preventing direct light reaching the user, projects into the head but is mounted in the branch tube which engages the handle carrying the battery. A handle 5 encloses the battery and carries a lamp bulb 9 which is illuminated by operating a thumb switch 11. The upper end of the handle is a push fit in a tube 4 so that the bulb 9 lies within the hood 12 and light is directed through the speculum 3. A viewing lens 2 is mounted at the other end of the head 1. The hood 12 is formed with an annular part 14 so as to be a push fit in the tube 4, independently of the handle 5.
Patent GB-1170221-A (GB)
Title: Dielectric Element
IPC: H01G4/20
Filed: 1968-03-14
Abstract: 1,170,221. Coated films. CHAS. PFIZER & CO. Inc. 14 March, 1968 [15 Jan., 1968], No. 12565/68. Heading B2E. [Also in Division H1] A capacitor dielectric comprises an organic film base 10 up to 0.01 inch in thickness have on one or, as shown, both surfaces coating 14, 22 comprising water insoluble resin matrix 16 up to 0.01 inches in thickness containing particulate ceramic 18 of under 10 microns particle size uniformly dispersed therein. The resin matrix material may be p.t.f.e., p.c.t.f.e., a cellulose derivative, polyamide, polyimide, polyethylene, polypropylene, polystyrene, polyurethane, p.v.c., vinyl chloride-vinyl acetate copolymer, polysulphone, polyphenylene oxide or preferably a polyester or polycarbonate, or the addition polymer of an unsaturated polyester, or copolymers thereof with styrene. The coating composition may include solvents, e.g. dioxan, tetrahydrofuran, methylene chloride, chloroform, 1:1 toluene-dioxan or 1:3 dioxanmethyl ethyl ketone, or alternatively plasticisers, e.g. dioylctphthalate, tricresyl phosphate, trioctyl phosphate and dibutyl sebacate, crosslinking agents, e.g. polyisocyanates, organic peroxides and azo-compounds, or ionic or non- ionic wetting or dispersing agents. The ceramic may be the titanate tantalate or niobate of barium, strontium, calcium or cadmium or mixtures thereof. The composition may be applied, in several layers, by a knife-coating technique. The base film material may be chosen from the same materials as the resin matrix. The coated film may be calendered with heat and pressure. Capacitors are formed by metallising the film or winding two such films with metal foils.
Patent GB-1390677-A (GB)
Title: Fluoropolymer compositions
IPC: C08K5/14
Filed: 1972-03-17
Abstract: 1390677 Fluorine containing polymers E I DU PONT DE NEMOURS & CO 17 March 1972 [18 March 1971] 12580/72 Heading C3P A polymer of (a) vinyl or vinylidene fluoride, (b) up to 0À5 moles per mole of (a) of tetrafluoroethylene and (c) from 0À05 to 0À3 moles per mole of (a) of CH 2  = CAB where A is H or C 1  or C 2  alkyl and B is -O 2 CR, -OR or CO 2 R where R is C 1-18  alkyl is cross-linked with ultra-violet light in the presence of a cross-linking agent which is an organic 'normal' carbonyl compound which has a triplet-excitation energy of at least 50À0 kcal/mole, a solubility of at least 0À1% in the fluoropolymer and a sensitizer gel value greater than 2. Copolymers exemplified are formed from two or more of vinyl fluoride, vinylidene fluoride, vinyl butyrate, propionate or pivalate, vinyl ester of Versatic acid (Registered Trade Mark), tetrafluoroethylene, hexafluoropropylene, chlorotrifluoroethylene, itaconic acid, cetyl vinyl ether, n-decyl acrylate and bis-(2-chloroethyl)vinyl phosphonate. The cross-linking agent used was benzophenone, benzoin, 2-methylanthraquinone, p-hydroxybenzophenone, 9,10 - phenanthrenequinone, benzil, 2-chlorocarbonylanthraquinone, acetophenone, and p-benzoquinone. The polymer and cross-linking agent dissolved in methylethyl ketone were coated on substrates and exposed to sunlight to effect cross-linking. In one example, a methyl methacrylate copolymer was included in the composition.
Patent GB-1164418-A (GB)
Title: Improvements in or relating to the Production of a Protective Layer on the Surface of a Semiconductor Body
IPC: H01L23/29
Filed: 1968-03-15
Abstract: 1,164,418. Semi-conductor devices. SIEMENS A.G. 15 March, 1968 [16 March, 1967; 26 July, 1967], No. 12619/68. Heading H1K. [Also in Division C1] A semi-conductor device is produced by depositing a layer of Si 3 N 4  from the gas phase on to the surface of a semi-conductor body, adding an oxygen-containing gas to the reaction gas so as to deposit a layer of SiO 2 , covering the SiO 2  with a layer of photolacquer, locally exposing this layer to light and developing it so as to expose the SiO 2 , etching the SiO 2  in these areas, then etching the Si 3 N 4  with hot H 3 PO 4 , and finally introducing the desired dopants, e.g. using B or P vapour. The reaction gas may be a silazane or aminosilane or a mixture of a silane e.g. SiH 4 , a halogenated silane, e.g. SiCl 4 , an alkyl silane, or an aryl silane, with NH 3  or an amine. The oxygen containing gas may be O 2 , H 2 O, or CO 2 . The semi-conductor body may be of Si.
Patent GB-615404-A (GB)
Title: A process for the preparation of unsaturated derivatives of 2-methyl-2-hydroxy-3-halogen-teterahydrofurane and for their conversion to vitamin b and the like
IPC: C07D307/20
Filed: 1941-09-30
Abstract: Unsaturated derivatives of 2 - methyl - 2 - hydroxy-3-halogen-tetrahydrofuranes containing one molecule of water less than the parent compound are prepared and converted to Vitamin B1 by a process which comprises subjecting 2-methyl-2,3-dihalogen-tetrahydrofuranes or reaction mixtures containing these compounds to the action of reagents which are capable of splitting of halide acid, e.g. pyridine and, if desired, subjecting to the action of 2-alkyl-4-amino-5-(thioformanidoalkyl)-pyrimidine to produce Vitamin B1.  The unsaturated derivatives of 2-methyl-2-hydroxy-3-halogen-tetrahydrofuranes containing one molecule of water less than the parent compound may also be prepared by treating aceto-chloro-propyl alcohol with phosphorous halogenides and treating the reaction mixture with agents capable of splitting off a halide acid.  Detailed examples are given. Specification 609,803 is referred to.
Patent GB-744011-A (GB)
Title: Production of unsaturated aliphatic nitriles and catalysts therefor
Inventor: HADLEY DAVID JAMES
IPC: B01J23/28
Filed: 1953-05-07
Abstract: Unsaturated aliphatic nitriles are produced by the reaction between unsaturated aliphatic aldehydes, ammonia and oxygen in the presence of a catalyst containing molybdenum on activated alumina containing up to 10 per cent by weight of sodium or up to 20 per cent by weight of potassium.  Starting materials may be either unsaturated aldehydes such as acrolein, alpha-methacrolein, crotonaldehyde and alpha-ethyl-beta-propyl acrolein or compounds which by oxidation or de-alcoholization give unsaturated aldehydes such as allyl alcohol, alpha-methyl allyl alcohol, beta-alkoxy propionaldehyde, diallyl ether, acrolein acetal, trialkoxy propane and beta-alkoxy isobutyraldehyde.  The known methods of vapour phase catalysis may be employed but in view of the high heat output a fluidised bed may be of advantage.  Alternatively the control of temperature in the catalyst bed may be facilitated by the use of less active catalysts in combination with the pretreated molybdenum/alumina catalyst. Suitable conditions for the reaction are:-temperatures between 330 DEG  and 500 DEG  C. and contact times of the order of 0.1-20 seconds.  The concentration of the organic compound in the reactants should be below 10 per cent, and preferably below 3 per cent and the pressure may be above or below atmospheric.  Basic constituents, such as ammonia, are removed from the reaction product by quenching with acid.  The recovery of nitriles depends on the volatility and solubility of the nitrile.  The lower nitriles are removed by scrubbing with suitable solvents, such as water, alcohol, glycols, removing impurities by treatment with alkali as described in Specification 719,635.  Specification 709,337 also is referred to.ALSO:A catalyst, used in the production of unsaturated nitriles from ab  unsaturated aliphatic aldehydes ammonia and oxygen, comprises molybdenum or a molybdenum compound deposited on alumina, characterized in that the alumina is heated to an elevated temperature before deposition of molybdenum and in that the catalyst contains 0.5-10 per cent by weight of sodium or 0.5-20 per cent by weight of potassium, based on the weight of alumina. Specifications 709,337 and 719,635, [Group IV(b)], are referred to
Patent GB-991864-A (GB)
Title: Elliptical roller device with closely spaced ribs
Inventor: CONWAY ROBERT DANIEL
IPC: B02C23/08
Filed: 1962-04-03
Abstract: 991,864. Separating loose material. PETTIBONE MULLIKEN CORPORATION. April 3, 1962, No. 12722/62. Heading B2H. Apparatus for separating loose material by sizes, e.g. gravel, includes a bed of parallel rollers 11 of elliptical cross-section, with adjacent rollers disposed 90 degrees out of phase, the rollers being driven with their tops moving towards the discharge end of the bed, and the rollers having elliptical ribs 14 which prevent jamming of the loose material between adjacent rollers, the spacing between adjacent ribs on a roller being slightly less than the spacing between two adjacent rollers. To prevent the loose material jamming between the rollers 11 and the side plates of the roller bed circular ribs 21 are provided near the ends of each roller. Circular ribs 22 are also provided in the planes of the side plates and these may extend out towards the ribs 21. In an alternative embodiment, Fig. 2 (not shown), the ribs 14 may be in the form of a spiral on each roller. The roller 11 at the discharge end of the bed is driven through a hub 26 and the other rollers are driven by chains (not shown) passing round sprockets 28, 30 fixed to the shafts carrying the rollers. The chain is supported at its upper and lower runs by guides, Fig. 4 (not shown), to prevent slack in the chain and consequent loss of phase between the rollers in the event of reversal of the direction of rotation of the rollers to clear a jam. U.S.A. Specification 2,743,813 is referred to.
Patent GB-236173-A (GB)
Title: Improvements relating to elastic couplings for use in centrifugal machines
IPC: B04B9/12
Filed: 1925-05-15
Abstract: 236,173. Glanzfõden-Akt.-Ges. June 28, 1924, [Convention date]. Addition to 235,166, [Class 12 (i), Bearings &c.]. Universal joints.-In an underdriven centrifugal machine, particularly for spinning artificial silk, the divided spindle having its upper part elastically mounted as in the parent application, the two parts a, b are each provided with a cup-shaped or dished enlargement, and elastic material such as a rubber cylinder c is secured therein by pins d. Specification 2944/83 is referred to.
Patent GB-1446426-A (GB)
Title: Space heating means
IPC: F24H9/02
Filed: 1973-03-16
Abstract: 1446426 Electric space heaters HEATWAY INDUSTRIES Ltd 7 Aug 1973 [7 Aug 1972 16 March 1973] 36841/72 and 12793/73 Heading F4S [Also in Division H5] In an electric space heater comprising a finned heating tube assembly disposed within a casing 7, internal baffles or partition walls 16 and 24 are provided to divert incoming air to cool the front and rear walls 13 and 12 of the casing 7. A pair of spaced apart brackets 31 and associated members 30 are provided to support the finned tube assembly. Each bracket 31 has a number of lugs 34a, 35 and 36 which extend through apertures in the baffle 16, the outer lugs 34a and 36 being suitably bent over to secure the bracket to the baffle 16. Notches 38 and 40 formed in the front portions of lower and upper arms 33 and 34 of the brackets serve to support the baffle 24 in position. The casing is adapted to be mounted on a wall X through bracket means Z. The heating tube assembly comprises an aluminium tube 1 containing a plurality of longitudinally aligned ceramic rods (2a, 2b, 2c &c. Fig. 6, not shown) each having a pair of longitudinally extending bores 3a, 3b housing a coiled heating element 4. The upright edges of all the parallel spaced apart fins 5 are bent in the same direction to form upright walls 5a. A modified form of bracket for supporting the heating tube assembly is described (see Figs. 7-9, not shown).
Patent GB-353514-A (GB)
Title: Synchronising in signalling circuits
IPC: H04M11/06
Filed: 1930-04-25
Abstract: 353,514. Superposed telephony and telegraphy. STANDARD TELEPHONES & CABLES, Ltd. and SANDEMAN, E. K., Columbia House, Aldwych, London. April 25, 1930, No. 12833. [Class 40 (iv).] In a system for the simultaneous transmission of two kinds of message, one of which involves synchronously-operating apparatus at the terminal stations, e.g. telephony and telegraphy, and in which the direction of transmission of both messages is always the same and is controlled by one message, synchronism is controlled from the transmitting station for the time being. In addition, one of the oscillators controlling synchronism may be controlled by a master oscillator while it is not being controlled from the distant station. The Figure shows the terminal apparatus of a submarine cable. When speech arrives from the land-line 24, relays H, B, K are operated by the rectifier 55 and relays L, M, N co-operate to send a short impulse of direct current over the cable. H unlocks F, G and B completes the sending channel. Synchronizing currents pass to the cable from the apparatus 1 over back contacts of relav O. At the distant end the courier current energizes E which is followed by F, G, which lock up and energize C, J and O, the last passing the synchronizing currents to the coil 19 of a dynamometer relay which in case of lack of synchronism energizes one of the coils Q, P to press one of two flexible discs 10, 11 against a rotating roller 64 thus varying the value of a condenser 2 and the frequency of the oscillator 1. Speech arriving over the cable 23 passes in part to rectifier 54 to energize A and so connect the receiving channel to the land-line 24. A common delay network 62 is provided for both directions. If a master oscillator is provided it will feed currents to the coil 19 at such times as the coil is not receiving currents from the distant oscillator.
Patent GB-867551-A (GB)
Title: Improvements relating to oscillators incorporating transistors
Inventor: REID ERIC ROBERT MCEWAN
IPC: H03C3/40
Filed: 1959-04-15
Abstract: 867,551. Frequency shift telegraphy. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 26, 1960 [April 15, 1959], No. 12841/59. Class 40(5) In an oscillator comprising a wideband transistor amplifier A across which two transistor phase shifting and amplifying circuits 1A and 2 provide a feedback connection to promote oscillation at a desired frequency, one of the circuits 1A has a modulator SM connected thereacross through a combining network R10- R13 whereby the phase-shift against frequency characteristic of the circuit 1A is modified to effect frequency modulation of the amplifier output. Resistors R10-R13 are such that the output circuit 1A and the output circuit of the modulator are in conjugate relation. With double current telegraph signals applied at TG the output from the modulator is either in phase or in anti-phase with the feedback circuit input, and with no signal there is no transmission path through the modulator. The phase shifts in circuits 1A and 2 may be aiding or opposing according to the number of stages in the main amplifier.