baber/WOPTO huggingface dataset:
Patent GB-467515-A (GB)
Title: Improvements in or relating to explosion rivets
IPC: F16B19/12
Filed: 1935-12-17
Abstract: 467,515. Rivets. HEINKEL, E. Dec, 17, 1935, No. 35029. Convention date, May 25, 1935. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 18, 1936.] [Class 89 (i)] [Also in Group XXII] Rivets are expanded by an explosive charge carried in or on the shank. The cavity or bore 5 is closed by an easily frangible cap or cover 7 so that the gases resulting from the explosion can escape readily. In a modification, the cavity is open at the shank end, the charge being retained by contracting the free end of the bore. Specification 467,514 is referred to. The charge is exploded by electrical or mechanical means.
Patent GB-1112992-A (GB)
Title: Three-dimensional integrated circuits and methods of making same
IPC: H01L25/16
Filed: 1965-08-16
Abstract: 1,112,992. Solid circuits having printed circuits formed thereon. TEXAS INSTRUMENTS Inc. 16 Aug., 1965 [18 Aug., 1964], No. 35049/65. Headings H1K and H1R. A solid circuit comprises a crystalline body containing semi-conductor circuit components arranged in at least two superposed laminar regions electrically isolated by an intervening layer of intrinsic material. Interconnection between components in the respective regions is effected by means of conductive tracks extending through the intrinsic material and/or by optical coupling through the intrinsic material between a light-emitting component in one region and a light-responsive component in the other. The embodiment, which comprises four such mutually isolated laminar regions, is made as follows: a layer of N-type gallium arsenide is first epitaxially deposited on one face of a wafer of semi-insulating gallium arsenide. Resistors and interconnecting conductive tracks are next formed in or on this layer by successive vapour depositions either through masks, or overall followed by selective etching, or by diffusing impurity into the layer. Other components are formed by planar diffusion techniques and the surface covered with silicon oxide by reactive sputtering. The opposite face of the intrinsic wafer is next masked and a pattern of resistors and conductors is then formed by epitaxial deposition of gallium arsenide or impurity diffusion. A further oxide layer is provided over the components to expose only the parts to be connected to an adjacent layer, and pillars of low-resistivity gallium arsenide or germanium built up on these parts by vapour deposition. Connections to components in the N-type layer may previously have been made by diffusion or by drilling holes with an electron beam between connection pads formed of gold. The gold melts and passes into the holes by capillary action to form the connection. After removing the oxide layer and providing another only on the pillars semi-insulating gallium arsenide is deposited to fill the space between the pillars. Resistors and conductive tracks are deposited on the resulting layer as before and connect with the pillars which have been exposed for the purpose. The zones of transistors are similarly formed by epitaxial deposition and any desired connections to components in any of the previously formed layers provided as before. Pillar connectors and a further semiinsulating layer are grown over the components thus formed. Resistors are formed on this layer as before and make connection with light-emitting diodes of gallium arsenide or arsenophosphide. An optical output is thus provided, and if desired the input may be in the form of an optical or thermal signal directed on to a suitably responsive element in the circuit. The use of internal optical links between silicon photo-sensitive elements in one layer responsive to light emitted by gallium indium arsenide diodes in another is also envisaged.
Patent GB-758536-A (GB)
Title: Machine for mixing and metering a plurality of liquids
IPC: B67D7/74
Filed: 1953-12-16
Abstract: 758,536. Mixing liquids in proportionate quantities. CHIANTELASSA, A. Dec. 16, 1953 [Dec. 16, 1952], No. 35062/53. Class 86. [Also in Groups XXIV and XXIX] A mixing and metering machine for a quantity of liquids comprises a metering unit for each liquid having a plurality of pistons and cylinders mechanically coupled by a swash plate whilst the swash plates are coupled by a common drive, and means for adjusting the inclination of a swash plate for varying the delivery of the associated metering unit. Each of a pair of meters 1, 2, Fig. 1, contains a set of four pistons 6-9 and 29-32 respectively, the piston rods of which are engaged by swash plates 10 and 34 respectively, on rotatable shafts 14 and 38 respectively which are rigidly connected together. Petrol and oil under pressure are admitted into inlets 3 and 26 respectively and under the control of rotary distributors 4, 27 respectively are admitted into and exhausted from the cylinders whereby metered quantities of petrol and oil are delivered from outlets 22, 46 respectively, as the pistons reciprocate under the influence of incoming pressure liquid. The relative proportions of the delivered liquids depends upon the relative dimensions and lengths of stroke of the pistons. The inclination of the swash plate 34 is adjustable by means of mechanism, Fig. 2 (not shown) which may be operated externally to axially displace a pivot 42 to one end of which a swivel linkage 35, 40, supporting the swash plate 34 is secured, thereby providing control over the length of stroke of the pistons 29-32 and consequently, over the mixture proportions. Similar means may be provided for varying the delivery of the meter 1. Stops may be provided to limit the stroke of the pistons in order to give them a period of rest to avoid inlet and outlet pulsations at high operating speed. The output of the meter 1 is recorded by a totalizer operated by a shaft, Fig. 2 (not shown) driven from a gear wheel 23 on the shaft 14. The output of the meter 2 is recorded by mechanism wherein the swash plate 34 imparts reciprocation to a rod 55, Fig. 6, carrying a rack 59, Fig. 7, which by means of a ratchet drive and reduction gearing, imparts unidirectional rotation to a totalizing shaft 66. A duplicate of this mechanism (rod 551, rack 59<SP>1</SP>) is mounted at 90 degrees to the first one and is also coupled to the shaft 66, the shaft 66 actually being driven at any given instant by the mechanism which is operating at the highest speed whereby substantially constant rotation of the shaft 66 is obtained.
Patent GB-352612-A (GB)
Abstract: 352,612. Interrupters for internalcombustion engines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and HEWITT, W., 3, Paxton Road, Coventry. May 5, 1930, No. 13790. [Class 38 (v).] An ignitioncontact - breaker for use with an induction coil has a spring restrained cam engaging member of relatively large mass which is actuated by a cam giving rapid acceleration in such a manner that for high speeds the " flinging of the movable contact which co-operates with a resilientlymounted fixed contact may cause the ignition circuit to be closed for an increasing angle of movement of the operating cam so ensuring an appreciable time to permit the growth of flux in the coil. The retarding action on the moment of break which is produced by this arrangement may be compensated by the provision of a known centrifugally-operated automatic cam-advancing mechanism. As shown in the Figure, the movable contact 5 is secured in a relatively massive holder 4 slidable within a fixed sleeve 6 and anchored to the mid-point of a blade spring 7 which is secured at its ends in fibre blocks 8, current being led to the movable contact through a flexible connecting spring 10. The cam 1 is provided with sharply rising projections which engage the tip 3 of the holder 4 to move the contact 5 into engagement with the relatively fixed contact 9 secured to the centre of a blade spring 13 adjustably anchored at both ends below blocks 14. As the speed of operation increases the relatively massive contact carrier 4 is flung towards the fixed contacts in such a manner that the contacts dwell together for an increasing angular rotation of the shaft 2 so as to permit sufficient time for building up of the sparking voltage. The consequent retardation of the spark due to this action may be compensated by an automatic centrifugallyproduced advance of the cam 1 in relation to the driving shaft 2.
Patent GB-438297-A (GB)
Title: Improvements in or relating to compositions suitable for use as filling or coating material for paper and textiles
IPC: D21H17/69
Filed: 1934-12-07
Abstract: A composition, e.g. for filling or coating paper and textiles, or as a pigment &c. for rubber, oil paints &c. or as a cold water paint, comprises a finely divided mixture of clay, lime, and alum, which is added to water to form the reaction products of alum and lime, containing suspended clay particles.  The lime and alum may together comprise up to 40 per cent of the mixture, and may be in the proportion 1 : 1 or 1 : 4 or more, and \ba1/10\be--2 per cent of trisodium phosphate may be used.  The lime may in part be replaced by calcium carbonate.  In an example, the proportions of clay, alum, hydrated lime, calcium carbonate and trisodium phosphate are respectively 1300, 120, 50, 25 and 15.ALSO:A composition e.g. as a pigment or filler for rubber &c comprises a finely divided mixture of clay, lime, and alum, which is added to water to form the reaction products of alum and lime, containing suspended clay particles.  The lime and alum may together comprise up to 40 per cent of the mixture, and may be in the proportion 1 : 1 or 1 : 4 or more, and 1/10 -2 per cent of trisodium phosphate may be used.  The lime may in part be replaced by calcium carbonate.  In an example, the proportions of clay, alum, hydrated lime, calcium carbonate and trisodium phosphate are respectively 1300, 120, 50, 25 and 15.
Patent GB-507846-A (GB)
Title: Improvements in or relating to heating elements for electric furnaces
IPC: H05B3/66
Filed: 1937-12-20
Abstract: 507,846. Couplings; uniting metal and ceramic material by heat. SIEMENS SCHUCKERTWERKE AKT.-GES. Dec. 20, 1937, No. 35269. Convention date, Dec. 28, 1936. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 20, 1938.] [Classes 36 and 38 (i)] [Also in Group XI] In a furnace heating-element comprising a resistance rod 1 enclosed in a ceramic tube 4, each end of which is gas-tightly closed by an annular jointing strip 5 projecting from a connecting head 2 and soldered to the tube, an intermediate member 3, which may be of metal and integral with the head, is arranged between the latter and the end of the resistance and is of sufficient length or diameter to serve as a heat screen for the soldered joint. The intermediate member may be of less diameter than the rod. In a modificfation, the head and the intermediate member are provided with a cooling passage.
Patent GB-1008597-A (GB)
Title: Improvements in slip ring seals
IPC: F16J15/36
Filed: 1963-09-06
Abstract: 1,008,597. Mechanical seals. G. VOLLAND. Sept. 6, 1963 [March 22, 1963], No. 35343/63. Heading F2B. In a mechanical seal for a rotary shaft 1 and comprising an axially movable and rotary sealing ring 11 urged into contact with a stationary sealing ring 10 by a rubber &c. bellows 16 which is connected at one end to the ring 11 and at the other end to the shaft, and is surrounded by a rigid bush 21, the space 24 between the bellows and the shaft is filled with an incompressible plastic medium, e.g. water or grease, whereby the sealing contact pressure between the rings 10 and 11 is substantially independent of variations in the pressure differential across the seal. A bead 15 on one end of the bellows tightly engages the shaft and is reinforced by a metal ring 18 and a flange 19 on the other end engages a groove 20 in the ring 11 and is secured therein by the stiff fabric bush 21 that forms an axially tapering gap 23 with the bellows 16 and prevents it bulging outwardly to any extent due to the effects of centrifugal force. The ring 10 is sealed by a ring 9 to the housing 5 which is sealed to the shaft by a ring 8. The plastic medium, e.g. water or grease, is supplied to the space 24 through a stop valve (not shown), fitted to a bore 28.
Patent GB-847815-A (GB)
Title: Improved adhesive tapes
IPC: C09J7/38
Filed: 1956-11-19
Abstract: 847,815. Pressure-sensitive adhesive tape. MINNESOTA MINING & MANUFACTURING CO. Nov. 19, 1956 [Nov. 18, 1955], No. 35379/56. Class 140. A normally tacky pressure-sensitive adhesive tape comprises a thin flexible backing member coated with a copolymer of monomers consisting essentially of (a) monomeric acrylic acid ester or esters of one or more non-tertiary alkyl alcohols the molecules of which have from one to 14 carbon atoms and including an alcohol having at least 6 carbon atoms, the average being 4 to 12 carbon atoms, a major proportion of the said molecules having a carbon chain of at least four carbon atoms terminating at the hydroxyl oxygen atom, said chain containing at least half the total number of carbon atoms in the molecule, the said acrylic acid ester or esters being per se polymerizable to a stretchable, elastic adhesive mass; and (b) at least one monomer copolymerizable with the said acrylic acid esters or esters, and selected from acrylic acid, methacrylic acid, itaconic acid, acrylamide, methacrylamide, acrylonitrile and methacrylonitrile in an amount by weight within the range of 3 to 12% of the total of monomers (a) and (b). Preferred copolymers contain 92 to 96 parts by weight iso-octyl acrylate and 8 to 4 parts acrylic acid; and 94 to 97 parts by weight iso-octyl acrylate and 6 to 3 parts acrylamide. Non-tertiary alkyl alcohols specified are methyl, ethyl, propyl, tetradecyl, 1-methyl pentanol, 2- methyl pentanol, 3-methyl pentanol, 2-ethyl butanol, 3,5,5 - trimethylhexanol, heptanol - 3, iso-octanol, n-decanol, and dodecanol Specified backing members are " Cellophane" (Registered Trade Mark), cellulose acetate, ethyl cellulose, plasticizedvinyl acetate-vinyl chloride, ethylene glycol-terephthalic acid poly-. ester, which may be given a primer coating, treated or untreated paper, cloth and wadding. The adhesive composition may also contain copolymerizable ethylenically unsaturated monomers such as ethylacrylate, vinyl chloride, various methacrylate esters, butadiene, isoprene and diallyl phthalate.
Patent GB-844378-A (GB)
Title: Dixylyl phosphoramidates and process for preparing same
IPC: C07F9/24
Filed: 1956-11-20
Abstract: The invention comprises dixylyl phosphoramidates and a composition consisting of diaryl phosphoramidates containing at least 50 per cent by weight of a dixylyl phosphoramidate or of a mixture of dixylyl phosphoramidates.  The dixylyl phosphoramidates have the formula <FORM:0844378/IV(b)/1> and may be obtained by reacting dixylyl halophosphates with ammonia and removing the hydrogen halide formed. Aqueous ammonia may be used or gaseous ammonia may be bubbled through the halophosphate, e.g. chlorophosphate, preferably in the presence of an organic solvent, until the reaction is complete.  The compositions referred to may be obtained by using an appropriate commercial xylenol in the preparation of the dixylyl halophosphate used in the above reaction.  A suitable dixylyl chlorophosphate may be obtained by reacting commercially available mixed xylenols with POCl3 with or without the addition of a catalyst, e.g. MgCl2 or AlCl3.  Examples are given for the production of chlorophosphates and dixylyl phosphoramidates from commercial xylenols of various compositions including a commercial xylenol compounded to contain 46,7% mixed cresols and 2,6% phenol. The products are useful as gasoline additives (see Group III).ALSO:A dixylyl phosphoramidate having the formula <FORM:0844378/III/1> (see Group IV(b)) is used as an additive for gasoline.  It may be used in admixture with dicresyl phosphoramidate.  A specified composition comprises a commercial gasoline containing tetraethyl lead, small amounts of ethylene dibromide and ethylene dichloride and sufficient of a dixylyl phosphoramidate derived from a mixed commercial xylenol to give a phosphorus lead atom ratio of about 4:3.
Patent GB-976608-A (GB)
Title: Swash-plate mechanism for internal combustion engines
IPC: F01B3/02
Filed: 1963-09-09
Abstract: 976,608. Linkwork; valves. H. PAPST. Sept. 9, 1963 [Sept. 10, 1962; March 14, 1963], No. 35461/63. Headings F2K and F2V. In a swash-plate mechanism for internal combustion engines, a wobble ring 14 is mounted on the inner race 13 of a ball-bearing whose outer race is supported on a swash plate 3, and the wobble ring 14 is prevented from rotation by a bevel gear 16. The wobble ring 14 is provided with connecting-rod pivots 17 which are fed with oil under pressure. The outer race is in two parts which are mounted on the swash plate 3 by a housing ring 6, aligning shims 11 and screws 9. In a modification, shown in Fig. 2, the wobble ring is supported by an angular contact bearing 12 and rollers 35. Secured to the wobble ring 14 are threaded rings 38 in which are screwed bearing bushes 39. In another modification, the rollers 35 are replaced by a plain bearing, and the wobble ring 14 may be made of titanium alloy or aluminium alloy. In the arrangement shown in Fig. 5, two angular contact ball-bearings are used, the outer races being secured together by a compression ring 68 and the race 65 being constructed so as to be resiliently yielding. Angle # is at least 15 degrees, preferably 25 degrees, and angle γ is at least 40 degrees, preferably 65 degrees. A similar arrangement may be applied to a single angular contact ballbearing. In a further modification, taper rollers are employed. A valve in the lubricating system comprises a U-shaped leaf spring 73, Fig. 7, inserted in a slot 72, transverse to an oil channel 21, and having one end located in a recess 74.
Patent GB-362653-A (GB)
Title: Improvements in or relating to splash protectors for trousers
IPC: A41D27/14
Filed: 1930-11-26
Abstract: 362,653. Trouser protectors. SKELTON, R. F., Brook Lodge, Cheadle, Cheshire. Nov. 26, 1930, No. 35531. [Class 141.] A splash guard for trousers comprises a piece of flexible material 4 for attachment at the back of the trousers. As shown, the guard is of triangular formation reaching in use at the base of the trousers from one side seam to the other and upwardly to some convenient point such as the calf of the leg or the knee. A clip hook or the like 6 serves for attachment to the trousers.
Patent GB-1507749-A (GB)
Title: Manually operated jack for use in tree felling
IPC: A01G23/099
Filed: 1975-08-29
Abstract: 1507749 Tree felling guider V A DUSHKU 29 Aug 1975 35810/75 Heading A1E A manually operated mechanical jack for use in tree - felling comprises three plates 4, 5, 10 pivotally connected to and pivotally interconnected by three sets of spaced apart levers (6), 7, 8, respectively, the first plate 4 being hingedly joined to the second plate 5 at one end and secured at the other end to a manually operated lever 1. The device is used as indicated in Fig. 1, either in a partially actuated position to take the weight of the tree off a saw cutting through the trunk, or in a fully actuated position, Fig. 5 to effect the directional felling of sawn trees. Locking means (not shown) may be used to keep the jack in a partially actuated position. Teeth 18, 18' are provided to prevent slipping. To help in fitting and positioning the device in a saw cut, a spring 12 acting on the third set of lever members 8 and a spring 14, travelling on a guide 15, to align the face of plate 5, may be provided.
Patent GB-484332-A (GB)
Title: Improvements in or relating to electrical amplifier circuits employing negative reaction
IPC: H03F1/36
Filed: 1936-12-31
Abstract: 484,332. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and FARREN, L. I. Dec. 31, 1936, Nos 35830/36 and 2643/37. [Class 40 (v)] In a negative reaction amplifier having elements Z 1 .. Z5 producing feedback and a load impedance Z varying considerably with frequency over the operating range, one of the elements is of the form aZ +b, where a and b are independent of frequency and are positive or in the case of b may be zero. The values of a and b are so chosen that the current or the voltage in the load is stabilized and the output impedance is stabilized, or matched to the load, or is less than Ra the impedance of the output stage. The Specification gives a mathematical analysis and the circuit arrangement for obtaining each of the above conditions which involve one or more of the impedances Z 1 .. Z being reactive and in some cases the use of zero and infinite impedances. In some cases for current stabilization an impedance having a negative resistance component may be required, but the conditions will be substantially satisfied if the resistance is in these cases made zero.
Patent GB-1056558-A (GB)
Title: Production of ammonia
IPC: C07C273/10
Filed: 1964-09-02
Abstract: Urea and ammonia are produced by compressing a gaseous mixture of H2, N2 and CO2, resulting from reformation of a hydrocarbon with steam and air, to the pressure required for NH3 synthesis, reacting the mixture with liquid NH3 to form urea from the CO2, separating the urea and passing the residual gas to catalytic NH3 synthesis.ALSO:<PICT:1056558/C1/1> Ammonia and urea are produced by compressing a gaseous mixture of M2, N2 and CO2, resulting from reformation of a hydrocarbon with steam and air, to the pressure required for NH3 synthesis, reacting the mixture with liquid NH3 to form urea from the CO2, separating the urea and passing the residual gas to catalytic NH3 synthesis.  Gas feed stream 1 is compressed in 2 and combined with liquid NH3 stream 4 in elevated pressure vessel 5, in which ownflowing ammonium carbamate solution is admitted to the lower, liquid-retaining section via pipe 6.  CO2 from stream 3 combines with NH3 to form ammonium carbamate which is dehydrated under the prevailing conditions of pressure and temperature, e.g. 150 DEG  to 200 DEG  C., to form urea.  A liquid stream containing urea, NH3, water, ammonium carbamate and inerts passes by line 7 to processing in unit 14, from which an aqueous urea product solution leaves through 16.  An NH3 gas stream free of CO2 is withdrawn via 26 and condensed in 27, whence inerts are discharged from 29 and liquid NH3 is recycled to line 4.  Ammonium carbamate solution is withdrawn by 19 and recycled partly to unit 14 and partly to unit 5.  The residual gases from the latter, mainly H2, N2 and NH3, pass to cooler 37, the liquid NH3 produced therein being recycled through line 10. The gases are combined with stream 45 of effluent gases from catalytic NH3 synthesizer 60 and the combined stream is cooled in 49, where liquid NH3 passes through 54 to line 10 or 33.  The gaseous stream, after purging of inerts through 58, is passed to 60, from which effluent gas stream 61 passes to cooler 62. Outlet stream 65 is separated in 66 into gas stream 45 and liquid NH3 which is recycled to unit 5 via 56.  Stream 43 may be omitted, thus producing a greater excess of NH3 in the lower part of 5 and allowing a major portion of the NH3 from stream 4 to be removed via liquid phase 7 and subsequently withdrawn as liquid NH3 from 30.