baber/WOPTO huggingface dataset:
Patent GB-1431842-A (GB)
Title: Resilient padded items
IPC: A47C27/15
Filed: 1973-01-31
Abstract: 1431842 Upholstery STOREY BROS & CO Ltd 30 Jan 1974 [31 Jan 1973] 4930/73 Heading A4M [Also in Division B5] A method of making an upholstered article, e.g. a car seat comprises making a face part cover 16, e.g. by vacuum forming, and then filling it with a resilient foam 18 e.g. by foam casting, and then similarly making a rear part 24, before joining the two parts together after foaming has completed, e.g. by adhesive, so that the covers for the two parts completely enclose the item. Springs 28 and a seat frame 26 can be incorporated into the rear part. The face part foam can be softer than the rear part foam.
Patent GB-539524-A (GB)
Title: Improvements in grinding or pulverising devices
IPC: B02C13/284
Filed: 1940-03-18
Abstract: 539,524. Impact pulverizers. KING, A., and SIZER, A. W. March 18, 1940, No. 4968. [Class 59] A screen comprises impact bars 1 having sharp rectangular or acute edges mounted on a perforated screen and spaced similarly to the perforations 4 so that the edges of the bars lie substantially coincident with the peripheries of the perforations.
Patent GB-426442-A (GB)
Title: Improvements in or relating to fire-alarm systems
IPC: G01K5/16
Filed: 1934-02-16
Abstract: 426,442. Fire-alarms and fire-extinguishing. FARMER, F. L., 472, Bordesley Green, Birmingham. Feb. 16, 1934, No. 5107. [Classes 47 (i) and 47 (ii)] An operating device for fire or temperature alarms or extinguishing apparatus, preferably connected in parallel with the pushes of a house bell system, comprises a mercury tube 8 having sealed-in contacts 10, 11 and housed in a casing 17, the contact 11 being connected to the bottom 14 of the casing. A contact strip 21 connected to the contact 10 extends inside the casing 17 to a point adjacent the contact 11. A fusible ring 16 is secured within the casing. When the temperature rises, the mercury expands, and bridges the contacts 10, 11, closing the circuit of the bell 3 and indicator board 6, Fig. 4, at 1. If it continues to rise, so that the mercury bursts the tube 8 and falls into the bottom 14, the contacts 11 and 21 are bridged. If a temperature is reached at which the mercury volatilizes, the ring 16 melts and bridges the contacts 11, 21. The pushes of the bell system may be incorporated in the device, as at 23, and the tube 8 may be graduated. Preferably, an extension bell, not shown, is provided for a bedroom or the like. In a modification, Fig. 3, adapted to close at 29, Fig. 4, the circuit of a double pole relay 27 for energizing a solenoid 28 which controls a sprinkler valve 30, the contact 29 is constituted by the end 34 of an expansion tube 32. If the tube 8 bursts, the mercury closes the relay circuit at 11, 34. At the same time, the air in the tube 32 expands. On subsequent cooling, contraction of the air remaining in tube 32 sucks out the mercury from the bottom 14, so that the relay circuit is broken at 11, 34, the solenoid 28 is de-energized, and the supply of water to the sprinkler is cut off.
Patent GB-488735-A (GB)
Title: Improvements in or relating to boxes or cans
IPC: B65D81/20
Filed: 1937-02-20
Abstract: 488,735. Cans or boxes; vacuum closures. BARLOW, R. Feb. 20, 1937, No. 5162. [Classes 66 and 125 (iii)] The lid of a metal can or box capable of being vacuumized comprises a shallow dished portion 6, fitting loosely within the mouth of the body portion, and an outwardly extending flange 7 on the underside of which is provided a sealing compound 10 adapted to engage the edge of the body, the flange overhanging a bead or shoulder 4 formed in the body wall so that an opening implement may be disposed on the shoulder and hoisted to lever off the lid. A jointed locking ring 11, Fig. 2, engaging the underside of the bead and the upper surface of the flange, may be provided. Specification 457,459, [Group XXII], is referred to.
Patent GB-1248801-A (GB)
Title: Film-strip supporting device
IPC: G03B27/62
Filed: 1969-01-30
Abstract: 1,248,801. Photographic printing apparatus. AGFA GEVAERT A.G. Jan.30, 1969 [Jan.31, 1968 No. 5206/ 69, Heading G2A. Photographic printing apparatus has a support device for a film strip 1 containing originals 2 to be printed comprising guide means 3, 4 for locating a film strip and masking means 5, 5a, 6, 6a, for defining an exposure window bounding the original to be printed, the mask edges being arranged for movement in the direction of the path of the film strip by a rotary cam drum 9 which has axially extending cams 9a, 9b at either end of the drum which co-operate with projections 5c, 6c of the mask plates to adjust the area of the exposure window. The mask plates are urged together by an inter-connecting spring 10. The rear border of the exposure window is defined by a plate 18 slidable through pin-and-slot arrangement 18a, b, 19, 20 in a direction normal to the film movement, a pin 21 attached to plate 18 engaging a slot 22a provided in a plate 22 which is moved parallel to the film direction by a pin 24 attached thereto cooperating with a further cam surface 9c. The cam drum is rotated by a motor 12 through gearing 13, a commutator 15 attached to shaft 11 having contacts 17a, e, and continuous contact 16 bridged by sliding contact 14 permitting push-button selection of a standard film format. A negative pre-viewing device consisting of lamp 26, reflector 27, condenser 28 and a wedge-shaped hollow reflector 25 which is longitudinally movable and is coupled by arm 29 to mask 5. The masks and drive assembly are mounted together on a spindle 31 so as to be hinged upwards to allow cleaning of the assembly.
Patent GB-595153-A (GB)
Title: Magnetic amplifiers
IPC: G05B11/01
Filed: 1945-03-03
Abstract: 595,153. Non-contact-making relays. WOOD, N. R., BELL, J., and WOODHOUSE, C. H. L. March 3, 1945, No. 5386. [Class 40 (iv)] In a magnetic amplifier a direct current proportional to the rate of change of the rectified output is superimposed on the input to accelerate the change of input current. Two magnetic amplifiers 1a, 1b, Fig. 3, supplied with A.C. at terminals 4 and controlling D.C. at terminals 8a, 8b have their loads 5a, 5b connected across their rectified outputs. A signal causes one input to rise and the other to fall, so producing a correspondingly increased change in the voltages across loads 5a, 5b. The difference in potential across these loads causes a current to flow through primary windings of transformers 9a, 9b whose secondaries are connected in the respective input circuits, and consequently the input receives an impulse proportional to the rate of change of the output Normal feedback is provided through the coils 7a. 7b. In another embodiment, as applied to a servomotor, Fig. 4 (not shown), the field coils form the loads 5a, 5b and the voltage for the transformers 9a, 9b is obtained from a generator driven by the servomotor spindle. An arrangement in which the impedance across each output rectifier is maintained constant irrespective of loading is described with reference to Fig. 5 (not shown). In this, the two loads are connected as opposite arms in a bridge, the other arms of which are formed by equal resistances of the same magnitude as the load windings. Two such arrangements may be used in cascade.
Patent GB-1048734-A (GB)
Title: Abrasive blasting apparatus
Inventor: POWELL GEORGE WILKINS
IPC: B24C3/30
Filed: 1964-02-10
Abstract: 1,048,734. Blasting; tumbling. PANGBORN CORPORATION. Feb. 10, 1964, No. 5415/64. Addition to 939,331. Heading B3D. [Also in Division B2] In apparatus as described in Specification 939,331 a recirculating spout 205 leads off from the supply hopper 120 and connects with the hopper overflow 139. When the valve 35 is closed, the supply of abrasive to the blast wheel is terminated; a valve 206 in the hopper overflow 139 is opened, and abrasive accumulated in the hopper passes through the spout 205 and overflow 139 to the screw conveyer 108 and thence to the elevator for returning it to the separator. A surge tank may be installed in the overflow 139.
Patent GB-594318-A (GB)
Title: Improvements in and relating to vertically sliding windows
IPC: E05F11/44
Filed: 1945-03-05
Abstract: 594,318. Window-operating apparatus. YOUNG, W. March 5, 1945, No. 5483. [Class 20(iii)] A vertically sliding window, e.g., for vehicles, provided with spring balancing means as described in Specification 497,453, is manually operated by a transversely moving member connected to a lever arm of the balancing device. In the form shown, this member comprises a pulley m, on a lever o pivoted to the lever arm e of the balancing mechanism j, and moved along a fixed guide rail l by a handle n. Alternatively the member may comprise a carriage having rollers, or a slide. The rail l may be slightly inclined or curved.
Patent GB-539938-A (GB)
Title: Manufacture of 17-vinyl-testosterone or enol derivatives thereof
IPC: C07J1/00
Filed: 1940-03-27
Abstract: 539,938. 17-Vinyl-testosterone. SOC. OF CHEMICAL INDUSTRY IN BASLE. March 27, 1940, Nos. 5505 and 5506. Convention dates, April 1, 1939 and Feb. 27, 1940. [Class 2 (iii)] 17-Vinyl-testosterone is prepared by the partial reduction by catalytic hydrogenation of 17-ethinyl-testosterone under mild conditions until one molecular proportion of hydrogen has been adsorbed. It is stated that if the reduction methods are carefully controlled no reduction of the #<SP>4À3</SP>-linkage takes place. The preferred catalysts mentioned include iron, nickel, cobalt, palladium and platinum. In this type of reduction the presence of a material which reduces the activity of the catalyst is desirable. Compounds mentioned for this purpose include bases such as pyridine, quinoline and dimethylaniline. Other reduction methods specified include electrolytic and biochemical methods. In place of the 17-ethinyl testosterone itself there may be used as starting material an enol derivative thereof with the formation of the corresponding enol derivative of 17-vinyl-testosterone. In examples (1) 17-Ethinyl-testosterone is reduced by hydrogen in presence of pyridine using a palladium-calcium carbonate catalyst. (2) 17-Ethinyl-testosterone is reduced in alcohol solution using a Raney iron catalyst. (3) 17- Ethinyl-testosterone is reduced under similar conditions to those used in example (1). Specification 519,233 is referred to.
Patent GB-844803-A (GB)
Title: Improvements in or relating to feeding troughs for poultry
IPC: A01K39/014
Filed: 1958-02-20
Abstract: 844,803. Animal-feeding appliances. GROSSMITH, N. Feb. 12, 1959 [Feb. 20, 1958], No. 5544/58. Class 5(2). A feeding trough, which can be used, for example, in conjunction with the poultry cages described in Specifications 844,804 and 844,805, comprises two wooden end pieces 10, spaced apart by wooden bars 12 and 13, a wooden top 11, and a metal portion 15. Casement pins 20 are provided on the end pieces 10, whereby the trough may be pivotally mounted on, for example, a poultry cage, such pivotal movement being restricted by stops 18 and 21. The stop 18 also serves as a handle for pivoting the trough from a position in which the contents are accessible to the poultry in the cage, via the opening between the top 11 and an edge strip 14, to a second position in which the trough may be recharged. An inclined ledge 19 on the top 11 ensures that little or no rain enters the trough, and an internal baffle 16 serves to limit the amount of food flicked out of the trough by the birds.
Patent GB-1469395-A (GB)
Title: Agglomerated vanadium oxides
IPC: C01G31/02
Filed: 1976-02-12
Abstract: 1469395 Agglomerated vanadium oxide TREIBACHER CHEMISCHE WERKE AG 12 Feb 1976 [21 Feb 1975] 05595/76 Heading C1A Agglomerated V 2 O x  wherein x = 3À8-4À6 is made by decomposing ammonium polyvanadate in a reaction zone at 600-900 C. to obtain solid decomposition products and reducing gases and permitting the solid products to react with said reducing gases, the reducing gases displacing the ambient atmosphere in the reaction zone. The ambient atmosphere may be air or other oxidizing gas. Decomposition is preferably effected at 650-800 C., especially 680-800 C. The reducing gases and solid decomposition products are preferably passed through the reaction zone in the same direction in a continuous process and are preferably agitated during reaction. An inert gas may be added. The agglomerated V 2 O x  is particularly useful for the manufacture of ferrovanadium.
Patent GB-939349-A (GB)
Title: Steroids
Inventor: NATHANSOHN GIANGIACOMO
IPC: C07J75/00
Filed: 1961-02-16
Abstract: The invention comprises 16b -methyl-5a -pregnane-3b ,17a -diol-11,20-dione and 16b -methyl-5a -pregnane- 17a ,21-diol-3,11,20-trione 12-acetate, and the preparation thereof by epoxidising 16-methyl-5a -preg-16-ene-3b -ol-11,20-dione 3b -acetate, for example, with hydrogen peroxide, heating the resulting 16b -methyl-16a ,17a - epoxy-5a -pregnane- 3b -ol-11, 20-dione, for example, with p-toluenesulphonic acid in an anhydrous inert solvent, to form 16-methylene-5a -pregnane-3b ,17a -diol-11,20-dione, and subjecting this compound to hydrogenation, to form the first compound above, and by acetyloxylating 16b -methyl-5a -pregnane- 3b ,17a -diol- 11,20-dione (which may be prepared by the previous process) to form 16b -methyl-5a -pregnane-3b , 17a ,21-triol-11,20-dione 21-acetate and oxidising this compound to form the second compound above. The latter process may be extended by brominating the 16b -methyl-17a , 21-diol-3,11,20-trione 21 acetate product to form the corresponding 2,4-dibromo compound and dehydrobrominating the dibromo compound to form 16b -methyl-prednisone 21-acetate and, if required, hydrolysing this compound to the corresponding 21-hydroxy compound. The acetyloxylating process referred to above may be carried out by adding bromine to a solution of the 16b -methyl-5a -pregnane-3b ,17a -diol-11,20-dione in an inert solvent to form the corresponding 21-bromo compound, and refluxing this compound with potassium acetate in aqueous actone.
Patent GB-123217-A (GB)
Title: Improvements in or relating to Domestic Stoves.
Inventor: BRAVIN GEORGE ALBERT
IPC: F24B1/18
Filed: 1918-04-05
Abstract: 123,217. Bravin, G. A. April 5, 1918. Open fire-places.-A tube of concrete or clay A, domed at the top and having an opening in the lower portion thereof with bars D, stands on a base or slab B of concrete or clay. A horizontal grate C is arranged over a central opening in the base, which has radial air passages B<3>, and an ashpit extending to the front.
Patent GB-1535268-A (GB)
Title: Process for preparing olefin polymerisation catalysts
IPC: C08F10/00
Filed: 1976-02-16
Abstract: 1535268 Preparation of Ziegler olefin polymerization catalyst BATTELLE MEMORIAL INSTITUTE 16 Feb 1976 [17 Feb 1975] 05916/76 Heading C3P An olefin polymerization catalyst is obtained by (1) bringing a transition metal (including Ib and IIb metals) compound into contact with acetic acid, a chloro- or fluoroacetic acid, or an anhydride or mixture thereof and heating the mixture to at least 70‹ C. for at least 10 hours, (2) eliminating the excess acid reagent and drying the solid residue, (3) dispersing the residue in a first inert, anhydrous non-polar organic diluent, (4) introducing part of the dispersion so-formed into an identical or different diluent of this type, in such manner that a homogeneous liquid medium is obtained, and (5) introducing at least one organoaluminium compound into the medium to obtain the final catalyst. Typical examples refer to the polymerization of ethylene, propylene and ethylene - propylene using catalysts obtained by reacting, in step (1), ZrCl 4 , VCl 3 , NbCl 5 , TaCl 5 , MoCl 5 , WCl 6 , zirconium acetylacetonate, CrCl 2  or TiCl 4 , with acetic acid or anhydride or mixtures thereof, or trifluoro- or trichloro-acetic acid, dispersing in benzene, toluene, xylene, heptane or hexane in steps (3) and (4), and mixing with Et 2 AlCl, Et 3 Al 2 Cl 3  or iBu 3 Al in step (5).
Patent GB-924347-A (GB)
Title: A direct-current miniature motor
IPC: H02K1/17
Filed: 1962-02-16
Abstract: 924,347. Cores for electric motors. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. Feb. 16, 1962 [Feb. 23, 1961], No. 6042/62. Class 35. The performances of miniature motors are made consistent in spite of manufacturing tolerances by adjusting the reluctance of the permanent magnet stator core. The stator comprises endshields (not shown) joined by longitudinal stays 5 to permanent magnet polepieces 9, 10. The flux return yoke 11 consists of a magnetically soft cylinder which is obliquely gapped either longitudinally or peripherally, so that its physical position determines the reluctance. Alternatively the yoke 11 may consist of turns of magnetic wire round the stator, the number of turns being selected to give the desired reluctance. In addition, an inner soft magnetic sleeve 13 is obliquely cut off at C at one end and may be rotated to vary the pole-face reluctance.
Patent GB-1382120-A (GB)
Title: Production of plasticising compositions
IPC: C08J3/22
Filed: 1972-02-09
Abstract: 1382120 Plasticizing compositions ICI AUSTRALIA Ltd 9 Feb 1972 [25 Feb 1971] 6046/72 Heading C3P A solid composition comprises a thermoplastic polymer and a major proportion by weight of a liquid plasticizer the composition being in particulate form prepared by cooling a hot monogeneous blend of the components. Plasticized polymer compositions are prepared by blending an appropriate amount of this solid plasticizer composition with the polymer. It may be formed in granules or pellets or powder and the particles may be coated to prevent agglomeration on storage. In examples, the polymer used was polyvinyl chloride or a vinyl chloride/vinyl acetate copolymer and plasticizers included di-isooctyl phthalate, diisooctyl adipate, and chlorinated paraffin wax. A mixture of organic compounds of barium, cadmium and zinc and a phosphite chelating agent was added as a stabilizer and the composition was formed into pellets coated with polyvinyl chloride powder, talc, calcined kaolin or calcium carbonate. Polyvinyl chloride compositions were prepared by mixing polyvinyl chloride with a plasticizer composition and optionally with a pigment mixed with further plasticizer.
Patent GB-525582-A (GB)
Title: Improvements in or relating to traversing devices for yarn and like winding machines
IPC: B65H54/50
Filed: 1939-02-23
Abstract: 525,582. Winding yarns &c. UNIVERSAL WINDING CO. Feb. 23, 1939, No. 6063. Convention date, Feb. 24, 1938. [Class 120 (ii)] In a yarn or like winding machine having a roller or drum with oppositely arranged crossing and connecting helical paths, e.g., as described in Specifications 339,679, [Class 120 (ii)], and 378,964, for traversing the yarn, the roller or drum is built up from a number of sections, the divisions between which extend through the roller across the axis thereof and the peripheral portions of which present the helical paths for the yarn. As shown the roller is formed of sections 3 ... 8, which are preferably moulded from a plastic material, and the end faces of the sections are. of complementary form to co-operate with the faces of the adjacent sections and provide the traversing grooves when the sections are assembled on a shaft 15; the end sections 3, 4 are provided with metal hubs, 9, 10 by which they are secured to the shaft 15 by screws 16 and the sections are held together by screws 25 passing longitudinally through holes in the hub 10 and screwing into bores in the hub 9. The sections 5 ... 8 are formed with projecting cylindrical sleeves coaxial with the roller and of outside diameter equal to that of the hubs 9, 10 ; the sleeves may interlock to prevent relative movement between the sections or the sleeves may be formed with interlocking tongue and slot formations. The end faces of the sections are helically formed and when the sections are assembled the sleeves 20, 21, 23 on the sections 5, 6, 8 and a corresponding sleeve on the section 7 form the bottom walls'of the grooves while the end faces of the sleeves engage with end faces of the recesses with which they interchange to space the boundaries of the end faces of the section apart to form the helical grooves. The base of the groove is raised at or near the points where the paths of the groove cross to prevent undesired diversion of the yarn, a lateral projection on one section, e.g., a lug 45 overlying the sleeve of an adjacent section and projecting under the pointed portion 46 of the adjacent section.
Patent GB-581826-A (GB)
Title: Improvements in or relating to high frequency converter circuits
IPC: H03D9/06
Filed: 1944-04-03
Abstract: 581,826. Superheterodyne circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 3, 1944, No. 6132. Convention date, April 3, 1943. [Class 40 (v)] In an ultra-high-frequency converter stage, the cathode circuit is maintained at a predetermined inductive value in order to increase the signal to noise ratio, thus providing optimum sensitivity. The converter tube 1 shown has a frequency range of from 225 to 400 megacycles per second, the cathode inductance L, to which the local oscillator 15 is coupled, being chosen of such a value that the signal to noise ratio is increased two-fold. For values of the inductance below this critical value, the sensitivity decreases, and for values above, it again decreases rapidly. Reference has been directed by the Comproller to Specifications 478,194. 534,104 and 554,371.
Patent GB-1181021-A (GB)
Title: Improvements in or relating to laser Structures
IPC: H01S3/06
Filed: 1967-02-09
Abstract: 1,181,021. Lasers. AMERICAN OPTICAL CORP. 9 Feb., 1967 [31 March, 1966], No. 6250/67. Heading H1C. In a laser structure a doped glass active medium rod is disposed within a main body of glass provided with a bore parallel to the rod and filled with an ionizable gas forming the pumping source. The plan view of Fig. 1, shows a cylindrical elongated glass member 12 and a laser rod or fibre 14 of trivalent neodymiumdoped barium crown glass, an erbium-ytterbium-neodymium doped laser glass or an ytterbium-neodymium doped laser glass, extending therethrough. The refractive indices of member 12 and rod 14 are such as to form a substantially zero refractive index difference therebetween. A polished bore 16 running parallel to the laser rod 14 is filled with xenon, argon or helium which gas or gases are pulsed by sealed electrodes 20, 22. The laser optical cavity is formed by coatings 25, 27 or separate mirrors may be employed. In order to reflect the pumping light on to the laser rod the external surface of the glass body 12 is coated with a first layer 30 of silver and on the outer surface of this coating is deposited a copper coating 32 which latter coating dissipates heat produced during operation. In the arrangement of Fig. 3, the main body 12<SP>1</SP> is elliptical in shape with the laser rod or fibre 14<SP>1</SP> positioned at one face and the flash tube chamber at the other. Further cooling is provided in this arrangement by a plurality of radially extending cooling fins 38 running lengthwise or transversely of the structure, and a further jacket 42 encloses the whole structure and through which a coolant fluid may be pumped. The laser rod or fibre may in an alternative arrangement be provided with a doped glass cladding prior to insertion in the structure, Fig. 4 (not shown). The laser may operate as a generator or amplifier.
Patent GB-118812-A (GB)
Title: Improvements in or relating to Mechanical Roasting Furnaces.
Inventor: RAMEN ARTHUR
IPC: F27B3/24
Filed: 1918-04-12
Abstract: 118,812. Ramen, A. April 12, 1918. Charges, agitating.-Relates to means for conducting cooling-water to the hollow stirring or rabble arms of mechanical roasting-furnaces. In one form, Fig. 1, the connexion between the watersupply pipe e and the rabble arm is made through a passage f in a movable block g, which is pressed closely into contact with the inlet port in the arm by a sector h and wedge rod i situated within the central shaft. In another form, Fig. 2, the block is pressed into contact with the port by a bolt k adjustable by means within the rabble arm. In a modification, Fig. 3, the body g of the block is free to turn slightly round an internal liner n carried by the water-supply pipe.