baber/WOPTO huggingface dataset:
Patent GB-1471332-A (GB)
Title: Light controlled circuit
IPC: H03K17/795
Filed: 1974-03-27
Abstract: 1471332 Photo-electric presence or absence detector AMERICAN Mfg CO Inc 27 March 1974 [29 March 1973] 13619/74 Heading G1A [Also in Division H3] A light controlled circuit comprises a light source 6, whose light is emitted through a lens 4a to impringe on a retro reflective target 3, a mirror 4b mounted to reflect light reflected by such a target 3 and which has passed back through the lens 4a on to a phototransistor 8 whose output is connected to a threshold device 7, a two position mode switch 9 connected to the threshold device where by its operation can be switched to give an output either when the output of the phototransistor exceeds a predetermined value, or when it falls below a predetermined value and a relay driver circuit 11 operative on receipt of an output signal from the threshold device to drive a relay 15. A fine delay 10 may be included. The circuit in Fig. 2 (not shown) releases a relay RL when the illumination of a phototransistor Q1 changes from light to dark or dark to light depending upon the position of switch A B. The change cuts off transistor Q4 via a Schmitt trigger Q2, Q3 allowing a capacitor C4 to charge. After a time delay the capacitor voltage causes the voltage at point K to render a uni-junction transistor Q7 conducting allowing Q6 to operate the relay RL.
Patent GB-680805-A (GB)
Title: Improved apparatus for pressure moulding articles of plastic material of edible material, and of non-ferrous metals
IPC: B29B13/02
Filed: 1949-05-24
Abstract: 680,805. Injection-moulding. DESCHAMPS, L. May 24, 1949 [May 24, 1948; July 15, 1948], Nos. 13881/49 and 13882/49. Class 87 (ii). [Also in Group XXII] In casting articles of vinyl acetate or other plastic material, of edible material or of non-ferrous metals, the fluid material is drawn from a container by a pump which then forces it through piping into a mould and the whole apparatus except the mould is kept at desired temperature by being arranged in a bath 11. This may be heated by a thermostatically-controlled burner 5 or electrically and be surrounded by a casing 1 with or without a heat-conserving jacket. The container 12 is connected to the lower end of the pump 14 by a pipe 13 having a non-return valve 18 and may have also a hand-operated valve 15. The pump delivery pipe 24 has a hand-operated valve 26 and may have a non-return valve 25 in the nozzle 27 which engages the mould. When a hollow article is desired the valve 25 is omitted and after filling a mould the valve 15 is closed and the plunger raised to withdraw the stillmolten material while leaving a shell of solidified material. An extra burner may be connected by a flexible pipe at 28 for applying extra heat where required. The casing 1 may have an external shelf for heating reserve moulds and extra material. In a modification the valve 15 is replaced by a four-way valve 30, Fig. 4, which, in the position shown, will cause material to be drawn into the pump 14 via passages 34, 35, 36 and 13 and forced into the mould via passages 39, 43, 31, 43a and 24 and a non-return valve 42. When it is desired to withdraw material from the mould the valve 30 is turned through 90 degrees and the material passes to the pump via passages 24, 38a, 33, 38 and 13 and to the container 12 from the pump via passages 39, 32 and 40a and non-return valves 44, 45. 46 is an air bell and 47 a relief valve. In another modification a gear pump 49, Fig. 5, is used in place of the plunger pump and a four-way valve 52, in the position shown, causes material to be drawn from the container 12 and forced into the mould but, when turned through 90 degrees, to be drawn from the mould and returned to the container. The parts submerged in the molten material may be of non- oxidizing steel. The bath 11 may be cooled in any known manner and it may be filled with oil, fused salts, or water according to the temperature required. For making articles of thermosetting plastic material, biscuit dough &c. the bath 11 is kept cool by circulating cold water and the moulds are heated by electrical resistances or by preheating in an oven &c. For hollow articles of such material the solid layer is formed by the heat of the mould and the unheated liquid interior is withdrawn.
Patent GB-1313772-A (GB)
Title: Sulphur and peroxide-curable polyester resins
IPC: C08G63/668
Filed: 1970-03-24
Abstract: 1313772 Unsaturated polyesters ARMSTRONG CORK CO 24 March 1970 [26 March 1969] 14125/70 Heading C3R An unsaturated polyester of minimum No. Av. M. wt. of 2500 is derived from (a) about 50 mol. per cent of iso-, ortho- or terephthalic acid (anhydride or C 1 -C 3  ester), (b) 2-40 mol. per cent of a glycol of formula wherein the hydroxyl groups are primary or secondary, R is H or an alkyl group containing 1-5 C atoms, R<SP>1</SP>, R<SP>11</SP>, and R<SP>111</SP> are alkylene groups of from 1-5 C atoms, m is 0 or 1 and n is 0 or 1, (c) 2-40 mol. per cent of a polyether diol of maximum No. Av. M. wt. of 2000 (or mixtures thereof) and (d) 0-40 mol. per cent of an alkylene glycol HO-R-OH or mixture thereof wherein R is an alkylene radical of 2-6 C atoms, where the mixture of glycols (b) plus (c) plus (d) represents about 50 mol. per cent of the polyester forming reactants, and has a No. Av. M. wt. of 115-300. The polyester may be (1) chain extended with up to 1À0 equivalents of an organic diisocyanate per equivalent of acid plus hydroxyl groups, e.g. toluene - 2,4 - diisocyanate to a minimum M. wt. of 20,000, (2) cross-linked with a peroxide and mixed with uncross-linked resin or (3) chain extended with an organic diisocyanate to a M. wt. of 3000 or more, cross-linked with a peroxide catalyst and mixed with uncrosslinked resin. The modified resin is then cured with sulphur or a peroxide in the presence of the usual additives. In the examples the resins were derived from phthalic anhydride, trimethylol propane monoallyl ether and polyethylene glycol 400 or tetraethylene glycol (or mixtures thereof with ethylene glycol).
Patent GB-881689-A (GB)
Title: Improvements relating to envelopes for postal purposes
Inventor: WELLS GORDON NEWTON
IPC: B65D27/12
Filed: 1959-04-24
Abstract: 881,689. Envelopes. THORBURN, BAIN & CO. Ltd. April 21, 1960 [April 24, 1959], No. 14127/59. Class 146(2) An envelope of the kind for mailing "printed matter" has a tuck-in flap 11 which is positioned in a closed inner end pocket formed by side folds 2, 6 glued together at 7, 9, 10; the edge 12 of the flap extends parallel to the longitudinal axis of the envelope and lies close to the closed edge 8a of the pocket, whilst the other edge 13 of the flap is curved or otherwise non-parallel with the longitudinal axis of the envelope.
Patent GB-188693-A (GB)
Title: Improvements in or relating to furnaces for the utilization of bituminous shale and the like, by distillation and subsequent combustion
IPC: C10B47/40
Filed: 1921-05-20
Abstract: 188,693. Bergh, S. V., and Larsson, K. E. May 20, 1921. Air supply, heating; steam-generator and like furnaces; stoking -In apparatus of the kind in which coke is discharged from retorts on to a chain or other mechanical grate and burnt beneath a boiler or the like, the retorts are heated independently of the products of combustion of the coke residue. As shown vertical retorts 1, arranged in a block 2 adapted to move on rollers 3 and heated by burners 5 located in passages between the. retorts, discharge coke on to a chain grate 7 which passes beneath a boiler 8. The clinker and ashes from the combustion of the coke are dumped through a hopper 14 into a shaft 13, closed at the bottom and supplied through a pipe 17 with air which, ascending the shaft, becomes heated and passing through the outlet pipe 18 is forced by a fan or steam jet 19 into a pipe 20 and thence to flues 11 having outlets 12 arranged beneath the upper run of the chain grate. The products of distillation are withdrawn from the retorts through pipes 6 and passed either to the burners 5 or to a purifying plant. Steam or inert gas is supplied to the lower end of the retorts to form a seal.
Patent GB-716265-A (GB)
Title: Mullite refractories
IPC: C04B35/185
Filed: 1952-06-05
Abstract: In a method of making refractory shapes by mixing a refractory grog in a crushed condition with a bond, moulding the mixture into shapes, drying and firing to, e.g. 2850-3250 DEG F. and for a predetermined time, e.g. 1 to 30 hours, the refractory grog is mullite, having a well-developed interlocked mullite crystal structure and containing over 1 per cent. by weight of iron and titanium impurities, the bond consisting of finely-divided high purity alumina bauxite and pulverized raw clay, e.g. kaolin, with at least 50 per cent. of the bonding alumina of 325-mesh fineness. In one embodiment raw bauxite high-alumina content, e.g. Dutch Guiana bauxite, and pulverized raw kaolinic clay preferably in proportions giving a slight excess of alumina over the theoretical mullite composition in the final grog product, i.e. 73 to 77 per cent., preferably 75 per cent., by weight when the silica content will be from 18 to 22 per cent., preferably about 20 per cent., by weight, are mixed in a dry spiral conveyer, discharged into a pug mill where water is added to give a consistency to allow the mix to be extruded through a die open auger machine, cut into slugs and conveyed to a separately fired rotary kiln where the slugs are preheated to a uniform temperature as high as possible but below the sticking temperature, e.g. 3000 DEG  F, and then periodically charged into an electric melting furnace where they are melted at about 3400 to 3500 DEG  F., the molten charge runs into moulds, cooled and the solidified ingots crushed, preferably to pass a 4-mesh standard Tyler screen.  The mullite grog is mechanically mixed with 5 to 35 per cent. of an alumina-silica bonding material preferably a very finely divided pure alumina of which preferably more than 95 per cent. passes a 325-mesh standard Tyler screen and pulverized kaolin in which the alumina is slightly in excess of the theoretical mullite ratio similar to the preferred grog composition, i.e. in the range of 73-77 per cent. by weight, and water is added to the mixture in an amount dependent on the type of moulding to be employed.  The moulded shapes are then dried and fired at 3000 to 3200 DEG  F. for sufficient time to develop the desired mullite crystallization in the bond interlocked with and attached to the mullite in the grog.
Patent GB-438415-A (GB)
Title: Process for increasing the viscosity of tars
IPC: C10C3/02
Filed: 1935-05-15
Abstract: 438,415. Tar. AGTHE, C. A., 12, Mommsenstrasse, Zurich, Switzerland.-(Assignee of Geigy Akt.-Ges., J. R.; 215, Schwarzwaldallee, Basle, Switzerland) May 15, 1935, No. 14243. Convention date, May 16, 1934. Addition to 438,413. [Class 55 (ii)] The viscosity of tars is increased by heating during or after distillation with less than 5 per cent of an organic nitrosulphochloride. The compound is added in one example before distillation of the tar and in others to distilled tars when the mixture is stirred for 24 hours in a reflux apparatus at 110-120‹ C. Orthonitrochlorobenzene sulphochloride, nitrochlorotoluene sulphochloride, and nitro-naphthalene sulphochloride in amounts of 1 or 2 per cent are referred to.
Patent GB-581138-A (GB)
Title: Improvements in or relating to variable frequency electric oscillators
IPC: H03L7/20
Filed: 1942-10-13
Abstract: 581,138. Automatic control systems for electric oscillators. COOKE, D. Oct. 13, 1942, No.. 14317. Drawings to Specification. [Class 38 (iv)] Frequency.-An electronic circuit arrangement for stabilizing a variable frequency oscillator comprises a stable constant frequency oscillator, such as a crystal oscillator and a device developing from it multiple frequencies, means for selecting one of these and applying it to a frequency mixer together with a part of the output of the variable oscillator, a discriminator circuit tunable to the heterodyne frequency of the mixed output and a frequency control device attached to the variable oscillator to correct its frequency, wherein the discriminator is tunable over a range of frequencies at least equal to the difference between the frequency multiples. The discrete frequencies obtained from the stable oscillator may be spaced by 100 k.c. or multiples or fractions thereof so that the selector dial may be calibrated to represent the first two digits in a four-figure value for oscillator frequency and the tuning dial of the discriminator may be likewise calibrated to represent the last two digits of such value.
Patent GB-1147136-A (GB)
Title: Cephalosporins
Inventor: CRAST LEONARD BRUCE
IPC: A23K20/195
Filed: 1967-03-29
Abstract: 1,147,136. Cephalosporins. BRISTOLMYERS CO. 29 March, 1967 [30 March, 1966], No. 14354/67. Heading C2A. The invention relates to 7-(3<SP>1</SP>-methyl 4<SP>1</SP>- furazanacetamido) cephalosporanic acid derivatives of formula wherein A is hydrogen, OH, C 2-8  alkanoyloxy, benzyloxy, a quaternary ammonium radical or, when taken together with M, a monovalent C-O bond; and M is H, a pharmaceutically acceptable nontoxic cation, an anionic charge when A is a quaternary ammonium radical or, when taken together with A, is a monovalent C-O bond. The salts may be sodium, potassium, calcium, aluminium or amine salts. The cephalosporins are produced by acylating a compound of formula wherein A and M have the above meanings, with at least about an equimolar amount of an acylating derivative of an acid of formula in an inert solvent at a temperature of from -50 C. to 50 C. and, if desired, when A is an alkanoyloxy group containing 2 to 8 carbon atoms, further reacting the resulting compound with about an equimolecular amount of a tertiary amine to form the corresponding quaternary ammonium inner salt. The starting 7-amino cephalosporanic acid and its derivatives are prepared by the processes of Specifications 953,695, 957,569 and 966,222. 3-Methyl- 4-furazanacetic acid is prepared by known methods. The cephalosporins are antibacterials and nutritional supplements. A pharmaceutical composition comprises a 7 - (3<SP>1</SP> - methyl - 4<SP>1</SP>- furazanacetamido) cephalosporanic acid derivative as above and a carrier. They may be used for treating mastitis in cattle.
Patent GB-1468640-A (GB)
Title: Reflecting plates containing glass balls and method of making  the same
IPC: B29D11/00
Filed: 1975-04-08
Abstract: 1468640 Reflective coated products TOYO SEIKAN KAISHA Ltd 8 April 1975 [8 April 1974] 14419/75 Heading B2E [Also in Divisions E1 G2 and G5] A reflective plate for use as a number plate on a vehicle, or as a road sign, consists of a mirror-finish metal substrate 1 coated with a prime layer 2 of a transparent thermosetting resin which is dried and coated with a further layer 3 of a transparent thermo-setting resin into which are dropped glass balls 4 of an average radius greater than the thickness of layer 3. Excess balls 4 are removed by suction, the remainder being uniformly disposed in mutual contact with each other, and layer 3 is then dried and coated with a transparent layer of a fusible polymer 5, such as an acrylic polymer, which is heated, melted. and dried. Finally, a transparent coating of a polyvinyl plastisol is applied and heat dried. Layer 2 is preferably equal in thickness to the focal length of each ball 4, and control of the thickness of layer 3, as above, ensures that only those balls resting on layer 2 remain after suction is applied. This gives maximum reflectivity for the plate, and gives sufficient strength to permit stamping out raised letters and numbers 7 on the finished plate without damaging the coatings. A coloured thermosetting resin 8 may be applied to the raised portions 7.
Patent GB-109511-A (GB)
Title: Making Carbon Dioxide and Sodium Sulphate.
Inventor: MACKEY WILLIAM THOMPSON
IPC: C01B32/50
Filed: 1916-10-11
Abstract: 109,511. Mackey, W. T., and Carroll, J. S. Oct. 11, 1916. Drawings to Specification. Production of metal.-The residue, consisting of a mixture of sodium sulphate and calcium sulphate, obtained in treating a mixture of nitre cake and calcium carbonate with cold or warm water or carbon dioxide saturated with moisture, is used as a flux in glass-making.
Patent GB-636877-A (GB)
Title: Improvements in or relating to electronic valves of the velocity modulated type operating on very short waves
IPC: H01J25/12
Filed: 1946-05-13
Abstract: 636,877. Velocity-modulated tubes. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. May 13, 1946, No. 14452. Convention date, Sept. 19, 1942. [Class 39 (i)] A high-frequency electron discharge device of the velocity modulated type comprises a buncher including resonant circuits tuned to a frequency f/2 and to harmonics thereof, for producing a non-sinusoidal modulating field acting transversely of the beam, a drift space, and a catcher including a resonant circuit tuned to a frequency f. It is stated that the beam is velocity modulated at double the frequency of the control frequency owing to the longitudinal action of the boundary fields of the transverse control field, the length of the control field being such as to correspond to an odd number of half cycles of the control frequency. As shown, the buncher comprises two pairs of electrodes B1, B2. The quarterwave line L1 connected to electrodes B1, resonates at a frequency f/2, and the quarterwave line L2 connected to electrodes B2 resonates at a frequency f. The catcher field is bounded by grids G1, G2 which together with elements L<1>3, L"3 form a transmission line circuit resonant at frequency f. Feedback is provided between the resonant circuit L"3 and the resonant circuit L2. The Specification as open to inspection under Sect. 91 comprises also arrangements in which the buncher modulating field is wholly longitudinal, and comprises a number of harmonic sinusoidal fields in superposition or juxtaposition. In one arrangement the buncher and catcher each comprises two rhumbatrons, one resonant at frequency f and the other resonant at frequency 2f. As shown in Fig. 6 (Cancelled), the beam is deflected in the drift space by the electrode H. In another arrangement the velocity-modulated tube is of the reflex type. This subject-matter does not appear in the Specification as accepted.
Patent GB-151678-A (GB)
Title: A coin-freed amusement machine
IPC: G07F17/38
Filed: 1919-06-06
Abstract: 151,678. Maynard, R. June 6, 1919. Tivoli billiards and the like.-A coin-freed apparatus of the Tivoli-billiards type comprises a spring- controlled arm which is actuated by the player to project either the prepayment coin or a ball obtained thereby into one of a number of slots. In the form shown in Fig. 1, a coin inserted in the slot 8 drops into a pocket 4 mounted on an arm 1 which is turned by the player so as to discharge the coin into one of the slots 5. If the slot is reached, the coin is returned through a shoot 13 and slot 9. In the form shown in Fig. 3, a ball is released by a hand-actuated separator 16 to roll into a bucket 4 on the spring-controlled arm 1. A number of balls are released for delivery by the separator by the lifting of a gate 25 by spring action on the engagement of a catch 24 by a coin inserted in a shoot 23. The catch releases a pin 26<a> on a lever 26 which is moved to the right by a spring and allows a lever 27 carrying the gate to be moved upwards by a spring. The coin is retained in the shoot by a stop 26<d> against a slide 32<1> which prevents the return of the coin through the return money shoot, the member 26 carrying the stop and the gate 25 being reset through a lever 29 by the operation of actuating the separator 16. The slide 32<1> is connected to a lever 33 projecting into a shoot 34 so that it may be moved by a ball projected into this shoot to withdraw the slide and return the coin. Balls projected into the shoots 37 are returned in front of the gate and may be used again, and balls missing these shoots are directed into a receptacle for " lost balls."
Patent GB-751478-A (GB)
Title: Improvements in or relating to electro-magnetic relays
IPC: H01H51/22
Filed: 1953-05-22
Abstract: 751,478. Electromagnetic relays. ELREMA SOC. ANON PER LO SFUTTAMENTO DI BREVETTI. May 22, 1953 [May 28, 1952], No. 14474/53. Class 38(5) An electromagnetic relay comprises a magnetic core 1 around which is wound an energizing winding 2 which when energized causes two armatures 3, 4 to move to engage the core 1, the core and armatures preferably forming the contact members, the armatures 3, 4 being polarized by the provision of supplementary windings 14, 15 respectively. The polarizing windings 14, 15 may assist or oppose the energizing winding 2 and are designed to be able to maintain the relay operated by themselves but not to be capable of operation of the relay. All three windings must be de-energized to allow the relay to return to its normal position. The polarizing windings may be situated elsewhere in the magnetic circuit; for example around the, armatures themselves or around the air gaps between the core and armatures. A number of such relays may be mounted to form a unit, in which case the polarization windings 14, 15 may be common to all the relays. The armatures may be arranged to operate spring sets instead of forming contact members.
Patent GB-1344285-A (GB)
Title: Bogies for rolling stock
IPC: B61F5/38
Filed: 1971-05-12
Abstract: 1344285 Rail vehicle suspensions CREUSOTLOIRE 12 May 1971 [19 May 1970] 14512/71 Heading B7L A bogie comprises pairs of axles 1, 2 and 3, 4 and 5, 6, the end axles 1, 6 of the end pairs being steering axles, with a T-shaped draught bar at each end pivotally mounted at one end on the bogie longitudinal axis by a ball joint O, the ends of the arms of the T being pivoted in bearings 14 on pins 15 in axle boxes 23 on the respective steering axle, two beams 10 also being provided at each end of the bogie, the beams carrying springs 9 to support the load on the bogie and each resting at one end between curved abutments 24 on the associated non- steering axle box 23a, on the axles 2 or 5 so as to allow movement of the beam about horizontal and vertical transverse axes, the other end of each beam 10 resting on a cylindrical surface (not shown) of the associated axle box 23, each beam 10 being connected to its associated axle box 23 by two beams 19 by way of pivots 20 on the beam and pivots 21 on the axle box.
Patent GB-1273075-A (GB)
Title: An aquarium purification device
IPC: A01K63/04
Filed: 1970-03-25
Abstract: 1,273,075. Water purification device. PRECISION VALVE CORP. 25 March, 1970 [26 March, 1969], No. 14541/70. Heading B1C. [Also in Divisions A1 and Fl] In a water purification tower 10 for an aquarium 44 bubbles of air, oxygen or ozone from a porous aerator 36 connected by conduit 34 to a gas inlet 24 at the top of the tower move upwardly through water flowing downwardly in the tower and remove solid materials from the water to form foam which is removed through outlet 22. Aerator 36 comprises a block of porous wood. As shown water to be purified is raised to the top of the tower from beneath gravel 58 by air-lift pump 38. Alternatively the outlet of a circulating' pump may be connected to the base of pipe 40 or directly to the top of the tower. Water outlet passages are formed between the periphery of tube 12 of the tower and bottom cap portion 16.