baber/WOPTO huggingface dataset:
Patent GB-1536877-A (GB)
Title: Machine for forming plastic bags
IPC: B31B155/00
Filed: 1975-12-19
Abstract: 1536877 Stacking sheets PRINTEX 19 Dec 1975 [20 Dec 1974] 52014/75 Heading B8R [Also in Division B5] In a machine for forming and stacking plastics bags having a device 7 for blowing air over both sides of a web 1 of bag forming material to ensure that the web is moved beyond transverse sealing and cutting elements 2, 5 and 3, 6 a baffle 36 is provided to shield bags in a stack on a discharge conveyer 12 from being displaced by air from the blowing device. The baffle 36 is pivotally mounted and movable from a lowered, shielding position to a raised position to a raised position which permits movement of the stacks by the conveyer 12. The stacks also pass below a roller 35 which is movable between a raised position and a lowered position whereat it contacts the top of the stack and is driven at the same speed as the conveyer 12. A bag stacking arrangement comprises a plurality of upstanding pins 17 and a vertically reciprocable apertured member 18 for pushing successive bags on to the pins as the web is transversely sealed and cut. A vertically reciprocable element 20 supports the bags during stacking and pushes the completed stack off the pins 17 in response to a counter for counting the bags. The discharge conveyer 12 comprises an intermittently movable endless belt, the stepwise movement of which is adjustable to suit bags of different lengths.
Patent GB-1529920-A (GB)
Title: Electric batteries
IPC: H01M50/529
Filed: 1976-12-14
Abstract: 1529920 Storage batteries OLDHAM & SON Ltd R G ACTON and H MORTON 18 Nov 1977 [14 Dec 1976] 52154/76 Heading H1B An electric storage (e.g. lead acid) battery has a plurality of cell compartments 10 separated from each other by at least one wall 12 of thermoplastic resin, e.g. polypropylene, each compartment containing a plurality of plates 13 electrically connected together (e.g. by lugs 14 to lead alloy connecting rod 16), the plates of one compartment being directly electrically connected to the plates in an adjacent compartment by an intercell connecting rod 16 embedded through the wall(s) by deformation thereof when the thermoplastic resin was softened by heat.
Patent GB-1495295-A (GB)
Title: Thyristor combined with monolithically integrated diode and method for producing it
IPC: H01L29/74
Filed: 1974-12-03
Abstract: 1495295 Semi-conductor devices LICENTIA PATENT VERWALTUNGS GmbH 3 Dec 1974 [3 Dec 1973] 52228/74 Heading H1K A thyristor is combined with a diode in a monolithic structure which includes a layer 1 common to the thyristor and diode to form the thyristor base and, in the diode region, lying adjacent a more highly doped layer 7 of the same conductivity type. The thickness of the common layer 1 is different at the thyristor and diode regions. The common layer 1 is preferably an N-type base of the thyristor. In a method of making one embodiment of the structure, as shown, a portion 6 of oxide layers 2, 3 on a Si N-type chip 1 is removed and phosphorus is diffused-in from a phosphorus nitride source to form N + region 7 of the diode. This is followed by the formation of P layers 8, 9 by diffusing in Ga from GaP through the oxide layers 2, 3 followed by removal of an area 10 from layer 2 and in diffusion of phosphorus from a GaP source, to form N+ region 11 in the thyristor portion of the structure. A final diffusion of Au is produced from a deposited Au layer after removal of the oxide layers 2, 3. In a second method, the N+ layer 7 is produced by doping with As. The N+ layer 11 and P layers 8, 9 are produced in a double diffusion from a GaAs source. In another arrangement, the small dimension y of layer 1 is offset by a widening of the P layer 8 which is effected by an initial indiffusion of boron (Figs. 6-8, not shown) through an opening in the oxide layer. This opening is then closed and another is made in the oxide layer 3. A single diffusion from a GaP source produces P layers (8, 9) wherein Ga passes through the oxide layers and an N+ region (7) is formed as phosphorus diffuses into the unmasked chip. A further N+ layer (11) is produced as before.
Patent GB-524010-A (GB)
Abstract: 524,010. Gun sights. WASSILIEFF, V. Sept. 20, 1938, No. 27359. Convention date, Sept. 20, 1937. [Class 92 (ii)] Relates to sight-correction devices, for use in firing at rapidly moving targets, which set up automatically, as the target is followed, the angle of separation between the sight axis 12 and the axis of the gun, this angle being dependent upon the instantaneous angular speed of the target and the,time of flight of the shell. According to the invention, the angular speed is imparted to the sight from a constant-speed motor the transmission ratio being dependent on the position of the gun's axis with reference to the sight axis and being proportional to the size of the angle of separation of these axes. The device may be used to apply corrections both in azimuth and elevation. In the apparatus shown, a disc 2 rotated at constant speed drives a roller 5 feathered on a shaft 4 carrying a pinion 6 engaging a fixed circular rack 1. The roller is mounted on a slotted bar 8 also sliding on the shaft 4 under the control of a block 10 engaging the slot in the bar. To suit the range, the block is adjustable on a screw 9a which turns bodily about the axis of the disc as the gun is turned in following the target. The eccentricity x of the roller 5, which is proportional to sin # determines the speed of axial rotation of the shaft 4 which also moves bodily round the fixed rack to position the sight axis 12. Reference has been directed by the Comptroller to Specification 494,288.
Patent GB-1211215-A (GB)
Title: A photodetector cell
Inventor: POUBEAU PIERRE
IPC: H01J47/08
Filed: 1967-11-17
Abstract: 1,211,215. Photo-electric detectors. NORD AVIATION SOC. NATIONALE DE CONSTRUTIONS AERONAUTIQUES. 17 Nov., 1967 [21 Nov., 1966], No.52528/67. Heading H1D. A photo-detector cell comprises a gas-filled chamber m, which is parallelepipedic or has a highly flattened rectangular cross-section, one face with maximum surface area comprising a photo-cathode p, and said chamber containing a grid electrode l and a filiform anode a parallel thereto. A coating r of plastics material surrounds the mica chamber m and connectors ca, cl and cp. The gas may be argon at a pressure of 3-20 cm. Hg., and the cathode may be a single alkali metal, e.g. caesium, or a mixture of three alkali metals, and may be cooled by liquid nitrogen. The cell may be used in an artificial satellite to detect light from stars.
Patent GB-1535442-A (GB)
Title: Process of producing carbon fibres
IPC: D01F9/22
Filed: 1976-12-17
Abstract: 1535442 Carbon fibres TORAY INDUSTRIES Inc 17 Dec 1976 52915/76 Heading C1A Carbon fibres are made by surface-treating a precursor fibre of artificial organic material with potassium or sodium permanganate or dichromate in order to coat the surface of the precursor fibre with an oxide of manganese or chromium, heattreating the coated precursor fibre in an oxidizing atmosphere substantially without tension and then carbonizing the heat treated fibre in an inert atmosphere. The preferred fibre is polyacrylonitrile, and the preferred treatment is with an aqueous potassium permanganate solution, so that the treated fibre contains 0.2 to 1À5% by weight of manganese calculated on the weight of the dry precursor fibre, which may be in the form of a fabric, filament yarn or tow, or may be made into a fabric after surface treatment with the oxidizing agent. Carbonization may be effected substantially without tension, and may be followed by graphitization at at least 2000 C. in an inert atmosphere. Fibres so made typically show a tensile strength of at least 250 Kg per sq mm and a Young's modulus of at least 23,000 Kg per sq mm.
Patent GB-1447744-A (GB)
Title: Method for producing isopentene
IPC: C07C67/00
Filed: 1974-12-12
Abstract: 1447744 Disproportionation catalysts U B E INDUSTRIES Ltd 12 Dec 1974 [28 Dec 1973] 53698/74 Heading B1E [Also in Division C5] A catalyst is prepared by depositing 0.5-5 parts by weight of a Ba or Sr compound (calculated as oxide) and 1-20 parts by weight of an Ag compounds (calculated as metal) onto 100 parts by weight of an activated high purity alumina, and calcining the composite catalyst at 300-900‹C. The Ba or Sr compounds may be salts of inorganic or organic acids, oxides and/or hydroxides. The silver compound be the nitrate, sulphate, carbonate, halides, cyanide and/or thiocyanate. The alumina is preferably in the form of grains of diameter 2-10 mm or fine particles of 10-50 mesh size, and should contain less than 0.5 wt % alkali metals, if present, and less than 5 wt % silica, if present.
Patent GB-1413153-A (GB)
Title: Method and control circuit for liquid level control system
IPC: G01F23/00
Filed: 1972-11-22
Abstract: 1413153 Liquid level control; indicating liquid level T H CREEARS CORP 22 Nov 1972 [22 Nov 1971] 53908/72 Heading G1H and GIN [Also in Division H3]  In a liquid level control system in which the liquid level is sensed by completing an A.C. circuit to ground through a probe 16, the arrangement is such that a gate circuit 38, 40, 42 biases an S.C.R. device 34 when the probe 16 contacts the liquid 20 to energize a pump control 22. If long lines 14 are used, a large stray capacitance occurs and switches 46, 47 may be operated to include a resistance to limit the discharge current. In a further embodiment, Fig, 4 (not shown), a diode rectifies the A.C. current and a capacitor smoothes the D.C. voltage and, when the circuit is open, biases current flow through a uni-directional device 50 and resistors 38, 58 to create a reverse bias and prevent the gate triggering.
Patent GB-1140411-A (GB)
Title: Methods of manufacturing magnetic recording media
IPC: C23C16/06
Filed: 1966-12-06
Abstract: 1,140,411. Magnetic structures. INTERNATIONAL BUSINESS MACHINES CORP. 6 Dec., 1966 [17 Jan., 1966], No. 54442/66. Heading H1H. [Also in Division C7] Magnetic recording medium having a coercivity greater than 100 oersteds is formed by depositing a ferromagnetic alloy on a substrate at a temperature not greater than 260‹ F. from an atmosphere containing a compound of a ferromagnetic metal and at least one other compound containing no ferromagnetic element. The first compound may be iron pentacarbonyl, dicobalt octacarbonyl, and nickel tetracarbonyl or metal nitrosyl carbonyls, carbonyl hydrides or carbonyl halides. The second compound may be hydrogen sulphide, phosphine, selenides or tellurides. A carrier gas may be used, e.g. He, Ar, CO, CO 2 , N 2 , or H 2 . The substrate may be a metal, organic polymeric material, e.g. polyethylene terephthalate, paper, glass, or ceramic. The energy to decompose the compound may be: heating by conduction, radiation of microwave, or radio frequency, or by using a glow discharge. The product may be Fe, Ni, Co, Fe-Ni, or Co-Ni, containing P or S, and is said to be isotropic.
Patent GB-1166039-A (GB)
Title: Percussion Fuze
IPC: F42C15/184
Filed: 1966-12-06
Abstract: 1,166,039. Projectile fuzes. OERLIKONBUHRLE HOLDING Ltd. 6 Dec., 1966 [6 Dec., 1965], No. 54587/66. Heading F3A. Projectile fuze for use at direct or oblique angles of impact, comprising a spring loaded striker 22 held against displacement under the action of a spring 23 by balls 24 which extend through apertures in a guide 6 and are retained in a recess 26 in the striker by a displaceable sleeve 25 which, during transport, is locked against displacement under the action of a laterally and axially movable inertia element 27 by a locking element 30 which is pressed by a spring 34 against a slide 9 carrying a primer 10. A ball 33 co-operates with the locking element and sleeve 25, and a pin 16 locks the slide in a safety position. On launching a projectile fitted with the fuze, the pin 16 sets back and frees the slide which, after the projectile has left the barrel of the weapon from which it is fired, is moved by springs surrounding pins in the slide, to a position in which the primer is aligned with the striker. The locking element 30, thus freed, is then displaced by the spring 34, so that the ball 33 can move outwardly to unlock the sleeve 25. On impact the element 27 is thrown forwardly and lifts the sleeve 25 so that the balls 24 move outwardly and release the striker which is driven against the primer by spring 23. At oblique angles of impact the element 27 moves laterally up the surface 27a to lift the sleeve 25 If the fuze has not been armed during flight, then on impact the flange 6a is sheared off, so that the striker and associated elements can be displaced by the spring 23. In a modification (Figs. 5 and 6, not shown) where the fuze is used as a base fuze, the ball 33 is omitted and the locking element bears directly on the sleeve 25. In another modification the striker is displaceable in a sleeve (39, Fig. 4, not shown) locked by the balls 24, so that the striker can act directly on impact or be driven against the primer by a spring (40) when the sleeve (39) is freed. The striker is also arranged to set back into a bore in the slide to lock the slide until the projectile has left the barrel of the weapon.
Patent GB-1243983-A (GB)
Title: Adjustable hinges
Inventor: BLUM JULIUS
IPC: E05D7/04
Filed: 1968-11-19
Abstract: 1,243,983. Adjustable hinges. J. BLUM. 19 Nov., 1968 [20 Nov., 1967], No. 54912/68. Heading E2F. In an adjustable hinge at least one of the hinge members comprises a base plate 1 for attachment to an article and having projections 2 which extend into an aperture in the plate. In this aperture is slidably mounted a shim 4 with a tapped bore 6 and projections 5 complementary to those on the base plate. A mounting plate 7 carrying the hinge pin 8 at one end and having a projection 12 at the other engages with the tapped bore 6 in the shim by means of a screw 10 engaged in a slot 11 in the mounting plate. The slot 11 allows relative adjustment of the plates at right angles to the hinge pin. The relative inclination of the two plates can be adjusted by screw 9.
Patent GB-1142280-A (GB)
Title: Lubricating composition
Inventor: HENDERSON BENNETT MORRIS
Filed: 1967-12-07
Abstract: 1,142,280. Lubricants. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 7 Dec., 1967, No. 55753/67. Heading C5F. A lubricant comprises a mineral lubricating oil, 0À1-10 wt. per cent of a copolymer of a vinyl pyridine and at least one alkyl methacrylate, 0À1-10 wt. per cent of a reaction product of a polyalkylene polyamine and either a mono- (polyolefin) succinic anhydride or a polyolefin monocarboxylic acid, and 0À1-15 wt. per cent of a basic alkaline earth metal salt of an organic acid. The composition may also contain a zinc dialkyl dithiophosphate or a zinc bis-(alkylphenyl) dithiophosphate; phenols: arylamines; dibenzyl and dialkyl sulphides; esters and metal salts of organic phosphates, phosphites, phosphonates or their thio-derivatives; phosphosulphurized terpenes and their potassium salts; and silicones (examples are given). The basic salts may be sulphonates or alkyl salicylates (examples are given).
Patent GB-1419810-A (GB)
Title: Flue sections
IPC: F16L59/14
Filed: 1973-11-30
Abstract: 1419810 Pipe couplings; insulated pipes PARK SECTIONAL INSULATING CO Ltd 30 Nov 1973 55765/73 Headings F2G and F2P [Also in Divisions F3-F4] A flue section comprises an inner tube liner 11 and an outer tube sleeve 12 defining an annular gap 13 filled with particles of insulating material impregnated but not saturated with a binder and hardened so as to form a layer of insulating material bonded to the liner and the sleeve. Each end of the annular gap is closed by a collar 14 of insulating material in mat form which may be impregnated with the same binder. One end of the section is formed with a socket 15 with grooves 18 engaging protuberances 17 on the opposite spigot end 16. The insulation may be mineral or glass wool or vermiculite in mat form shredded into particles of between #-“ inch size. The binder is a sodium silicate solution containing about 50% water and having a Twaddell reading of 44 or it could be a resin or high alumina cement. The liner 11 may be ceramic or stainless steel, and the sleeve 12 galvanized steel, aluminium or stainless steel.
Patent GB-1474720-A (GB)
Title: Storage batteries
IPC: H01M50/457
Filed: 1974-12-24
Abstract: 1474720 Ni-Zn alkaline batteries MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 24 Dec 1974 55786/74 Heading H1B In a nickel zinc alkaline storage battery, separators comprise an electrolyte-absorbent layer 18, 19 of non-woven cellulose cloth next to the negative electrode 12, a cellulose membrane 20, 21 permeable to H<SP>+</SP> and OH<SP>-</SP> ions but not to Zn(OH) 4 <SP>--</SP> ions, and a microporous polyethylene or polypropylene film 22, 23; and the alkaline electrolyte is held in the separator, there being no excess electrolyte. 5-15 wt. per cent fine powder Ca(OH) 2  is preferably dispersed in the microporous film 22, 23. The cell is sealed and may include a gas phase reaction catalyst 24 for recombining oxygen and hydrogen evolved during charging (examples given), a pressure release safety valve 26, and an auxiliary electrode 28 for suppressing excess oxygen evolution towards the end of charging (examples given). The electrolyte is preferably 1À7-2À1 ml per Ah of negative electrode active material of 5-7 mol/l aqueous KOH; negative electrode; paste of ZnO powder and aqueous polyvinyl alcohol on a copper net.
Patent GB-561358-A (GB)
Abstract: 561,358. Calculating-apparatus. POOLE, G. H. Nov. 24, 1942, No. 16598. [Class 106 (i)] A device for indicating trigonometrical ratios comprises a disc 1 having-peripheral markings 7 and two concentric lines of indications 9, 10. The disc 1 is rotatable relatively to a smaller disc 2 having a slot 13 in which may be read from the disc 1 the length of the perpendicular and hypotenuse of a right-angled triangle of unit base and having a base angle equal to that shown by the peripheral marking 6 adjacent the slot 13. Two slots or apertures, one on each side of the centre, may be provided. A second smaller disc may be arranged to cooperate similarly with indications on the back of the disc 1.
Patent GB-1186040-A (GB)
Title: Manufacture of Unwoven Sheet Material
Inventor: COUSIN JEAN-CLAUDE
IPC: D04H3/12
Filed: 1967-12-12
Abstract: 1,186,040. Non-woven sheet. J. C. COUSIN. 12 Dec., 1967 [12 Dec., 1966], No. 56509/67. Heading D1R. Non-woven fabrics are made on a machine comprising a guide means for supporting and guiding a series of thread guides 18 along an endless serpentine path, means for advancing the guide means (and thus the sepentine path) along a closed path, and a means for restraining the series of thread guides 18 against movement in the closed path whilst permitting relative movement of the thread guides relative to the serpentine path. The movement of the paths results in reciprocation of the thread guides with respect to the annular path. There are also a bobbin carrier 19 to supply threads 21 to the guides 18 and a pair of parallel rollers positioned to receive the threads after they have left the guides .18. As shown, the serpentine path comprises a plurality of segments 7 mounted on a set of parallel slats 1 which are advanced around the closed path by a chain 2 fastened to their ends. The thread guides 18 are mounted on a chain 10 and the means retraining movement of the thread guides may be bars 14, 17 as shown, or driven sprockets mounted at the ends of the slats (see Fig. 6, not shown). In alternative embodiments the chain 10 may be replaced by a flexible device, and the chain may be moved in a serpentine path by sprockets mounted on cylinder or large radius. An additional stationary bobbin carrier (26), see Fig. 7 not shown may be provided to lead threads across the others so as to form triangular meshes. The non-woven fabric formed may be bonded by adhesive supplied from roll 23 or by a sheet of thermoplastic material applied to the sheet and heated and pressed thereto. In the latter embodiment, the roller 23 carries an endless belt (31) which carries perpendicular pins to receive the threads. The non-woven fabric may also be used to reinforce cellulose padding.
Patent GB-1206190-A (GB)
Title: Improvements in or relating to vehicle windscreen wipers
IPC: B60S1/08
Filed: 1967-12-13
Abstract: 1,206,190. Windscreen wipers. ROBERT BOSCH G.m.b.H. 13 Dec., 1967 [14 Dec., 1966], No. 56576/67. Heading A4F. A windscreen wiper driving system includes means for moving two wipers to parking positions beyond the wiping area, and comprises a double crank having rigidly connected spaced crank webs 44, 45 rotatable by a motor (not shown) having a drive shaft 32 and actuating two wipers (not shown) via connecting rods 22, 23, a first rotary eccentric device, including an eccentric 35, for radially displacing, when the switching off operation of the system is initiated, the two crank webs 44, 45 and a crank pin 47, and a second rotary eccentric device, including an eccentric 36, for displacing another crank pin 48 in an opposite direction, the crank pin 48 being hollow and embracing a bolt 46 interconnecting the crank webs 44, 45 so as to be displaceable relatively to said webs. During normal wiper operation the eccentric 35 is prevented from rotating relatively to the crank web 44 by the engagement of a pawl 53, carried by the web 44, against a peripheral shoulder on a plate 34 secured to the drive shaft 32. On opening a switch 90 to de-actuate the wiper system an electromagnet 66 is deenergized to release an armature lever 62. A spring 64 then actuates the lever 62 to disengage the pawl 53 from the plate 34 and lock the crank webs 44, 45 relatively to the rotating eccentrics 35, 36 so that the crank pins 47, 48 are each moved further from the drive shaft 32. When the wipers have reached their parking positions a pin 60 carried by the pawl 53 operates a slide 79 to disengage contacts 76, 77, and engage contacts 75, 76 to interrupt the circuit of the wiper motor and connect a brake winding 80 in parallel with the motor winding 81 thereby rapidly arresting the motor.
Patent GB-1373912-A (GB)
Title: Manganese compounds
IPC: C01G45/02
Filed: 1970-11-30
Abstract: 1373912 Recovering manganese compounds from liquors KODAK Ltd 28 Feb 1972 [30 Nov 1970] 56792/70 Addition to 1312252 Heading C1A Mn(OH)2 is precipitated from liquors containing a manganese salt, e.g. MnSO4, by adding to the liquor an aq. soln. of NH3 or a substituted NH3 having a pKa greater than 9, the soln. having a pH of at least 10, until the pH falls to a value exceeding 9À5 and then separating the hydroxide. The hydroxide may be converted into Mn3O4, manganese acetate, hydrate or dehydrate. The substituted NH3 may be a monodi or tri-alkyl (or aryl), amine or a nitrogenous heterocyclic base. Mn3O4 may be prepared by heating the hydroxide in deionized water with air or O2 at elevated temp and pressure Mn acetate tetrahydrate may be formed by dissolving the hydroxide in acetic acid and evaporating the liquor. The tetrahydrate may then be dehydrated by spray drying. The Mn liquor prior to precipitation of Mn(OH)2 may be treated (a) at a pH of 6À6 with Na2S to ppt. Cu, Co, Pb, Ni and Mo sulphides, and (b) with NaF or NaHF2 to solubilize SiO2. The Mn salt may be in an amount of 5% by wt. The Mn(OH)2 precipitation may be carried out at a temp. of 25-35‹ C. with the exclusion of air.