baber/WOPTO huggingface dataset:
Patent GB-1329078-A (GB)
Title: Tacan antenna system
IPC: G01S19/11
Filed: 1971-08-13
Abstract: 1329078 Aerials INTERNATIONAL STANDARD ELECTRIC CORP 13 Aug 1971 [14 Aug 1970] 38110/71 Heading H4A A TACAN aerial system comprises a plurality of aerials each providing a TACAN radiation pattern. The aerials are disposed in an empirically selected spaced relationship which is such that when their radiation patterns are rotated synchronously and inphase, unwanted nulls and lobes in the composite radiation pattern are reduced. As described, two TACAN aerials 2, 3 are vertically spaced and their radiation patterns are rotated by an arrangement 4, for example, a pair of synchronous motors. The aerials are sequentially excited by a TACAN transmitter 5 under control of an electronic switch 6, operated by a timing source 7. Interleaved pulse pairs are produced (Fig. 2, not shown) and, with a suitably selected distance between the aerials, the nulls and lobes in the vertical plane radiation pattern of the one, due, for example to a tree 1, coincide with the lobes and nulls in the other (Fig. 3, not shown). Separate TACAN transmitters 17, 18 for the aerials 2, 3 may be brought into use by de-activating the switch 6, and changing over switches 13, 14. When switches 15, 16 are closed the transmitters 17, 18 excite the aerials 2, 3 sequentially under control of the tuning source 7. In a second embodiment three TACAN aerials are disposed in a horizontal formation, to reduce unwanted nulls and lobes in the horizontal radiation pattern (Fig. 4, not shown). In a third embodiment two TACAN aerials are spaced apart both horizontally and vertically, to reduce unwanted nulls and lobes in the hirozontal and the vertical radiation patterns (Fig. 5, not shown).
Patent GB-905711-A (GB)
Title: Improved compositions based on chlorine-containing polymers, cured products obtained therefrom and a process for the manufacture of such products
Inventor: PETTIT MAURICE RAYMOND
IPC: C08F259/04
Filed: 1958-11-26
Abstract: Chlorine-containing polymeric products are made by mixing a chlorine-containing polymer with an allyl or methallyl monomer that is non-volatile under conditions of use and has a plasticizing action on the polymer and curing the mixture by means of heat-treatment in the presence of a free-radical polymerization catalyst of a defined type (see below), the product being a graft copolymer and, when an allyl or methallyl monomer having a functionality greater than 2 is used, being also cross-linked.  The free-radical catalysts used are those which, at a concentration of 0,01% by weight, will not accelerate the initial rate of polymerization of pure styrene at 120 DEG C. by more than 50%, but are effective as free-radical catalysts for styrene at some temperature within the range of 120 DEG  to 250 DEG C., which will initiate the polymerization of allyl and methallyl compounds and are substantially non-volatile at room temperature. Specified catalysts are dicumyl peroxide and the diphenyl ethanes of Specification 864,675.  Chlorine-containing polymers specified are polyvinyl chloride and vinyl-vinylidene chloride copolymers. Allyl and methallyl compounds specified are monoallylmono-octyl sebacate, diallyl phthalate, diallyl adipate, diallyl maleate, triallyl trimellitate, triallyl cyanurate, allyl crotonate, allyl acrylate, allyl phosphate, allyl carbonate, triallyl citrate, methallyl ethers and esters and low molecular weight polyesters containing allyl and maleic groups. Also present during polymerization may be plasticizers, e.g. esters of phthalic, adipic, sebacic, glycollic and phosphoric acids, stabilizers, e.g. dibutyl tin bis (monobutyl maleate), dibutyl tin dilaurate and dibutyl tin maleate, and pigments and fillers, e.g. carbon black and glass fibre. If desired the monomer-polymer mix may be given a partial cure prior to the heat-treatment either by storing the mix at room temperature or by exposing it to ultra-violet light in the presence of a photocatalyst such as p-chlorobenzophenone.  In a modification of the process the heat-treatment may be dispensed with altogether and curing effected by storage at room temperature for several days.
Patent GB-1421284-A (GB)
Title: Seal
IPC: C09K3/10
Filed: 1973-08-14
Abstract: 1421284 Joint making packing MASCHINENFABRIK AUGSBURG NURNBERG AG 14 Aug 1973 [16 Aug 1972] 38345/73 Heading F2B [Also in Division F1] Joint sealing means between a wet cylinder liner 1 and an engine block 2, comprises a layer of fluorine elastomer 9 applied to at least one of the surfaces, the total thickness of the layer or layers having a thickness not exceeding the sum of the maximum roughness depth of both surfaces. The preferred compound for the layer 9 is a vinyl fluoride hexafluorine propylene copolymer which is preferably applied by printing. In the embodiment shown, the liner 1 has a circumferential surface 3 engaging a corresponding surface 4 of the block and also a flange surface 7 abutting a surface 8 of the block. The surfaces 3 and 7 are coated with a 0À015 mm. layer 9 of vinylidene fluoride hexafluoropropylene copolymer which, in use, fills up the roughness depressions 10, 11, Fig. 2, in the surfaces 7, 8 and allows the projections 12, 13 to contact each other.
Patent GB-1262463-A (GB)
Title: Vacuum operable ignition timing units and systems
Inventor: COOKSEY WILLIAM HAROLD
IPC: F02P5/10
Filed: 1968-08-12
Abstract: 1,262,463. Timing ignition. JOSEPH LUCAS (INDUSTRIES) Ltd. July 23, 1969 [Aug. 12, 1968], No.38426/68. Heading F1B . A vacuum operable unit 11 for use with an ignition distributer (not shown) includes a casing 12 a diaphram 13 dividing the casing into first and second chambers 14, 15, a plunger 21 slidably received in the first chamber, the plunger being secured at one end to the diaphram and extending at its other end from the first chamber for connection to the distributer so that axial movement of the plunger varies the ignition timing of the distributer, a vent in the wall of the first chamber opening the first chamber to atmosphere, a conduit 18 communicating with the second chamber and through which vacuum can be applied to the second chamber and a spring arrangement 34, 35 urging the diaphram from a first position wherein in use the ignition timing of the distributer is advanced to a second position wherein the ignition timing of the distributer is in a minimum advance position for normal operation and capable of urging the diaphram from the second position to a third position wherein the ignition timing of the distributer is retarded beyond the minimum advance position when opposite sides of the diaphram are subjected to equal pressures. The unit is associated with a two position valve (not shown) operated in response to movement of an engine throttle pedal.
Patent GB-1403255-A (GB)
Title: Building structures
IPC: E04B1/35
Filed: 1972-08-17
Abstract: 1403255 Prefabricated buildings; panelled walls SOUTH SEAS INTERNATIONAL (NZ) Ltd 17 Aug 1972 [23 Aug 1971] 38465/72 Headings E1A and E1W A building is constructed from a peripheral base plate 10, 11, 12 mounted on a foundation 37, 42, wall posts 20, 25 and wall panels 29 mounted on the base plate and a wall joining member 38 mounted on the posts and wall panels; the members 10, 11, 12, 38 being apertured to locate the posts therebetween by means of top and bottom studs 24 which are also secured to the foundation and the roof joists respectively. The wall panels are each provided with a peripheral groove to accommodate the associated posts, to locate the member 38 thereon and to seat on the apertured upper flange of the base plate. For configuration of posts, base plate components, a wall joining member for securing a partition wall to the post and other minor constructional details such as materials employed, the Specification and remaining drawings, (not shown), should be referred to.
Patent GB-865753-A (GB)
Title: Improvements relating to devices for use with ventilation bores in masonry
IPC: E04B1/70
Filed: 1959-11-13
Abstract: 865,753. Ventilators. VOGLER, K. and UHLIG, R., [trading as VOGLER & CO. oH G., K]. Nov. 13, 1959 [Nov. 13, 1958], No. 38577/59. Class 137 An insert for a ventilation bore 9 in a wall comprises a tube 1 having apertures 2 in its walls and a transverse web 3 extending longitudinally not more than half the length of the tube and which divides the tube into two ducts 5, 6. The end face 11 of the tube is cut obliquely with respect to the longitudinal axis and a decorative end plate 15 is held to this face by pins 12. The tube and plate may be made of a synthetic plastic material.
Patent GB-369932-A (GB)
Title: A new sweetmeat
IPC: A23G3/00
Filed: 1930-12-23
Abstract: 369,932. Confectionery ; packing. WHITE, S. M. and WHITE, HUDSON, & CO., Ltd., Globe Works, Shakespeare Street, Southport. Dec. 23, 1930, No. 38647. [Class 28 (i).] Sweetmeats 1 of boiled, sugar are moulded. in the striated and curled shape of shrimps or prawns, each sweetmeat is wrapped in glace or waxed paper to simulate the glossy shell of a natural shrimp and a number of such wrapped sweetmeats are packed in a net or openwork bag 4. The sweetmeats may be made the usual red colour of a cooked shrimp. The bag may be enclosed by a binding string 5 carrying a label 6 bearing any suitable advertising matter.
Patent GB-345267-A (GB)
Title: Improvements in or relating to automatic or semi-automatic telephone exchange systems
IPC: H04Q3/42
Filed: 1929-12-18
Abstract: 345,267. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. and WRIGHT, E. P. G., Columbia House, Aldwych, London. Dec. 18, 1929, No. 38780. [Class 40 (iv).] A register-translator sends out different routing digits for calls to be extended over the same tandem junction, the outgoing selector acting in response to any of these digits to select the same group of outlets but the value of the digit serving to determine the selection of an appropriate metering cam. Fig. 1 shows an outgoing selector stage in a byepath system of the kind described in Specification 324,982, [Class 40 (iv), Telephones &c.], and Fig. 2 shows zone-metering apparatus common to a plurality of selectors. Switch RM1 is set by impulses repeated by relay A from a preceding byepath and serves to mark a group of contacts in the bank of wiper rm21 of switch RM2. In the arrangement shown the same group is marked by any of three different digits. When wiper rm21 reaches the beginning of the marked group relay M operates and on the relapse of relay C relay E energizes and locks up one or other or both of two metering relays MA, MB as determined by special metering wipers rm13, rm14 of switch RM1. This switch is then further advanced to engage the particular conversational selector in use, and the condition of relays MA, MB is transferred over wipers rm13, rm14 to similar relays AM, BM individual to the conversational selector. When the called party replies, relay MR operates completing a circuit for the starting relay of the finder SM associated with the common metering-circuit. When the selector in question is reached, relays P and/or Q operate and at the beginning of the next cycle an impulse over lead a operates relays SH and/or SJ which select one of the leads b, c, d, causing one, two, or three metering impulses to be transmitted over wiper sm3 and conductor M. At the end of the cycle relay SZ operates over lead e and shortcircuits relays AM, BM, releasing the common equipment. If relays AM, BM fail to release, an alarm will be operated during the next cycle over front contact sz1 and one of the leads b, c, d.
Patent GB-1195044-A (GB)
Title: Improvements in or relating to Wave Guide Arrangements.
IPC: H01P1/16
Filed: 1967-08-23
Abstract: 1,195,044. Waveguides. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 23 Aug., 1967 [23 Sept., 1966], No. 38905/67. Heading H1W. Two different wave modes respectively originating from waveguide 1 and coupling arrangement 13 are propagated to the left in waveguide 3. As shown, a coaxial line feeder 5, 6 has symmetrical branches which terminate in probes extending into waveguide 3 from opposite points in the transverse coupling plane A. A H 11  wave launched by the probes is reflected by a septum 7 and propagates from right to left in waveguide 3. A H 10  originating in waveguide 1 is not affected by the septum 7 and also propagates from right to left in waveguide 3. Waveguide 3 is substantially square in section and waveguide 1 has a rectangular section dimensioned to prevent propagation of the H 11  mode. The arrangement may use two circular waveguides in which ease the propagated modes are H 11  and H 21 .
Patent GB-345660-A (GB)
Title: Improvements in or relating to indicating scales such as are used with the tuning controls of wireless receivers
IPC: H03J1/04
Filed: 1929-12-21
Abstract: 345,660. Indicating-apparatus. GRAMOPHONE CO., Ltd., Hayes, Middlesex, COOPER, A. H., 104, Sarsfeld Road, Balham, London, and WEST, A. G. D., 34, Elwell Way, Beckenham, Kent. Dec. 21, 1929, No. 39178. Addition to 337,112, [Class 106 (iv), Indicating &c.). [Class 106 (iv).] Indicators according to the parent Specification comprise two or more separate scales corresponding to two or more alternative ranges of operation, any one of the scales being selectively illuminated while the others remain substantially unilluminated. As shown, translucent scale members 3 form a wall of a light-tight box 1 divided into compartments by a partition 2, each compartment being illuminated by a lamp 9. As applied to radio wavechanging apparatus the cursor 6 is rotatable with the tuning elements, and the lamps are selectively connected with the wave-range switches. The light devices may be arranged in front of the scales, and may be mounted upon the cursor which in this case is fixed. When the radio receiver is inoperative the light source may illuminate the cone and the loud-speaker.
Patent GB-1193854-A (GB)
Title: Photographic Apparatus having a Hinged Cover Provided with a Latching Device
Inventor: SIMON HORST
IPC: G03B17/02
Filed: 1967-08-25
Abstract: 1,193,854. Hinged covers. EASTMAN KODAK CO. 25 Aug., 1967 [26 Aug., 1966], No. 39262/67. Heading B8P. [Also in Divisions E2 and G2] Photographic apparatus is provided with a cover having pins 1b movable in slots 2c for sliding and pivotal movement, the edge 1a of the lid being engaged by a spring 8 which urges the cover to a closed position where a detent 1c engages under a portion 6a. A finger recess 1# is provided so that the cover can be opened by moving it manually against the spring 8, the spring abutting against a portion 1d to hold the lid partially open. The cover may be moved so that the spring abuts against the top surface of the cover to hold it in a fully open position.
Patent GB-937164-A (GB)
Title: Polymerization of alkylene oxides
IPC: C08F4/50
Filed: 1959-11-20
Abstract: A catalyst mixture for polymerizing alkylene oxides (see Group IV(a)) comprises (1) at least one compound of the formula ZnRR1, where R is alkyl and R1 is alkyl or halogen, and (2) water or an alcohol.  The amount of cocatalyst (2) is preferably from 10 to 150 mol. per cent of the organozinc compound in the case of water, and 150 to 250 mol. per cent in the case of alcohols.  The examples describe the use of the following mixtures: (1) zinc diethyl and water; (2) water and a mixture of zinc diethyl, zinc ethyl chloride and zinc chloride, prepared by reacting zinc diethyl with HCl in heptane; (3) zinc diethyl and methanol; (4) zinc diethyl and ethanol.  Specifications 785,229, 793,065 and 799,955 are referred to.ALSO:Alkylene oxides are polymerized by contacting in a closed vessel at a temperature of 0 DEG  to 100 DEG C. with a catalyst mixture comprising (1) at least one compound of the formula ZnRR1, where R is alkyl and R1 is alkyl or halogen, and (2) water or an alcohol, the amount of catalyst being 0,1 to 100% by weight of the monomer.  The amount of cocatalyst is preferably 10 to 150 mol. per cent of the organozinc compound in the case of water, and 150 to 250 mol. per cent in the case of alcohols. The alkylene oxide may be a compound containing a ring of 2 or 3 carbon atoms and an oxygen atom.  Examples are ethylene and propylene oxides and butadiene monoxide.  Solvents may be employed, e.g. hydrocarbons and ethers.  In the examples: (1) propylene oxide is polymerized in hexane using diethyl zinc and water; (2) zinc diethyl in heptane is reacted with HCl to give a mixture of EtZnCl, ZnEt2 and ZnCl2, water and propylene oxide are added and polymerization effected at 80 DEG C.; (3) propylene oxide is polymerized by zinc diethyl and methanol in hexane and after purification yields an elastic polymer; (4) as in (3) using ethanol instead of methanol. Uses: Thickeners for oils and lubricants; rubbery compounds for manufacturing tyres, belts &c., vulcanization being possible by sulphur and certain peroxides.  Specifications 785,229, 793,065 and 799,955 are referred to.
Patent GB-1082739-A (GB)
Title: Compensating circuit for use with d.c. amplifiers
Inventor: PROCHNOW HORST
IPC: H03F3/36
Filed: 1965-09-16
Abstract: 1,082,739. Amplifying circuits. INSTITUT FUR REGELUNGSTECHNIK. Sept. 16, 1965, No. 39561/65. Headings H3T and H3W. In an arrangement comprising a number of identical D.C. amplifiers having a common supply source an auxiliary amplifier provided with negative feedback is used to generate a correction voltage proportional to the drift or spurious signals and this is fed to the input stages of each of the other amplifiers so as to provide compensation. As applied to valve amplifiers, the screen grid of the input valve 1 of each of the main amplifiers, e.g. V 1  is fed from the screen grid of the first valve 1 of a similar auxiliary amplifier V n+1 , the input of which is earthed. This screen grid is fed over series resistor 6 and has 100% negative feedback applied to it from the output of succeeding stages 5 via Zener diode 7. Overall negative feedback is also applied to each of the main amplifiers by means of resistors 8, 9. Resistors 3, 4 the latter being variable, are provided, in each cathode circuit and permit adjustment of the static conditions. In an arrangement using transistors (Fig. 5, not shown), D.C. feedback is provided between amplifier output and the base of the input transistor in both main and auxiliary amplifiers and the output of the latter is fed via series resistors (19) so as to vary the base bias of the input transistor in each main amplifier.
Patent GB-851205-A (GB)
Title: Lubricants comprising esters of polycarboxylic aromatic acids
Filed: 1958-12-09
Abstract: The invention comprises alkyl esters of aromatic tetracarboxylic acids having 3-20 carbon atoms per alkyl group. The esters may be partial or full esters of mellophanic, pyromellitic or prehnitic acid and primary, secondary or tertiary alkanols.  They may be prepared by refluxing the acid and alkanol together, in the presence, if desired, of a water-entraining agent (e.g. heptane or toluene) or an esterification catalyst (e.g. sodium bisulphate, sulphuric acid, toluene sulphonic acid, sodium methylate or calcium oxide).  In the examples, (a) tetra(C8 oxo alkyl) pyromellitate is prepared by refluxing the oxo alcohol and pyromellitic acid in the presence of heptane and sodium hydrogen sulphate, (b) di (C8 oxo alkyl) pyromellitate is prepared by refluxing together the oxo alcohol and pyromellitic di-anhydride, (c) tetra (C8, C10 or C13 oxo alkyl or amyl) pyromellitates are prepared by refluxing together the alcohol and pyromellitic di-anhydride, p-toluene sulphonic acid being employed as esterification catalyst in preparing the amyl ester, and sodium hydrogen sulphate being employed as the catalyst in the case of the oxo alcohol esters, and (d) mono (C8 oxo alkyl) pyromellitate is prepared by refluxing together the oxo alcohol and pyromellitic di-anhydride.ALSO:A lubricating oil composition comprises a major proportion of lubricating oil and a minor proportion of an ester derived from a C3-C20 alkanol and an aromatic tetracarboxylic acid. The lubricating oil may be mineral or synthetic or a mixture of both. Synthetic oils mentioned are dialkyl esters of alkane dicarboxylic acids, alkyl esters of moncarboxylic esters, polyglycols and their esters, complex esters, phosphate, sulphite or carbonate esters, halocarbon oils, silicone oils and formals. The ester of an aromatic tetracarboxylic acid may be a partial or full ester, and may be derived from mellophanic, pyromellitic or prehnitic acid.  The lubricating oil composition may also contain detergents (e.g. calcium petroleum sulphonate), oxidation inhibitors (e.g. phenyl alpha naphthylamine or phenothiazine), corrosion inhibitors (e.g. sorbitan mono-oleate), pour point depressants, dyes, grease thickeners or load-carrying agents.  In the examples, lubricating compositions are described consisting of (a) mineral oil and tetra-amyl or tetra (C8 oxoalkyl) pyromellitate, (b) di (C8 and C10 oxo alkyl) adipates, phenothiazine and di (C8 oxo alkyl) pyromellitate, and (c) di (C8 oxo alkyl) azelate, a complex ester (derived from polyethylene glycol 200, C8 oxo alcohol and adipic acid), dimethyl silicone oil, tricresyl phosphate, phenothiazine, an antifoaming agent and mono (C8 oxo alkyl) pyromellitate. Some of the esters of the aromatic tetracarboxylic acids may be used as lubricating oils per se, and a lubricating composition is described consisting of tetra (C8 oxo alkyl) pyromellitate and phenothiazine.
Patent GB-1056977-A (GB)
Title: A hearth furnace
IPC: F27B3/00
Filed: 1964-09-29
Abstract: 1,056,977. Open-hearth furnaces. MAERZ OFENBAU A.G. Sept. 29, 1964 [Sept. 30. 1963], No. 39692/64. Heading F4B. An open hearth furnace having oxy-fuel burners disposed vertically in the roof has a rectangular hearth and the ratio roof height/#both surface areas lies between 0À5/1À0-0À7/1À0. In a typical example, the hearth has a length of 7.6 m. and a width of 3À3 m., the height being 3À0 m.
Patent GB-1002702-A (GB)
Title: Improvements in continuous extrusion devices
IPC: B29C48/67
Filed: 1963-10-09
Abstract: 1,002,702. Screw conveyer for plastics. BUSS A.G. Oct. 9, 1963 [Oct. 12, 1962], No. 39721/63. Heading B8A. [Also in Division B5] Plastic is extruded by screw 2 through an extrusion aperture 20, the screw being formed with an opposing counter screw 4 so that the plastic issues through holes 13 formed in the casing 11 enters the chamber 14 and returns to the counter screw through apertures 16 before finally issuing again through holes 13 and being extruded at 20. The screws 2 and 4 are reciprocated axially as well as rotated and the effect of the apertures 13 and 16 is to render the output more continuous.
Patent GB-1363903-A (GB)
Title: Arrangement for providing a ventilated zone in a part of a room partitioned by an air curtain
IPC: A61G13/00
Filed: 1971-08-25
Abstract: 1363903 Air curtains C G ALLANDER 25 Aug 1971 [4 Sept 1970] 39928/71 Heading F4V In a room 3, a zone 1 is screened by an air curtain 2 and supplied with ventilating air through apertures 11, air is delivered to the room outside the air curtain 2 through an inlet 5 to replace air drawn off by the curtain 2, and air outlets 6 are provided in the floor of the room or at the foot of the walls of the room, the volumes of air supplied through inlets 5 and 11 being equal. An inlet 10 for the curtain 2 and the inlet 5 are formed as single slots in annular channels which may be polygonal, e.g. triangular, rectangular, square or circular or elliptical in plan. The room may be a hospital operating theatre or a space for making precision instruments.