baber/WOPTO huggingface dataset:
Patent GB-1260526-A (GB)
Title: Field effect transistor
IPC: H01L27/02
Filed: 1969-04-21
Abstract: 1,260,526. Transistor amplifier and saw tooth wave generators. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 21 April, 1969 [23 April, 1968; 25 March, 1969], No. 20261/69. Heading H3T. [Also in Division H1] An IGFET with diffused source and drain regions of one conductivity type has formed in one of these regions a further diffused region, of the opposite conductivity type. The further region is directly connected to the gate electrode. In use as a Miller integrator with square wave input and saw tooth output the (reverse-biased) junction provided by the further region and the region (drain) containing it is used as the feedback capacitor. In use as an amplifier the region containing the further region is the source and the reverse-biased junction formed by the further region acts as a protective diode in a parallel with the gate insulation.
Patent GB-1301716-A (GB)
IPC: H01J19/36
Filed: 1970-04-28
Abstract: 1301716 Cooling semi-conductors BROWN BOVERI & CO Ltd 28 April 1970 [30 April 1969] 20330/70 Heading F4U Two semi-conductor disc cells 2 are cooled by the evaporation of liquid in an annular chamber 6, vapour being condensed in tubes 7 for return to the chamber. The tubes 7 are cooled by a stream of air and the cells 2 are thermally connected to the chamber 6 by a member 1 which, together with a sleeve 5, defines the chamber. The member has fins 9 in the chamber to promote the dissipation of heat. The tubes are arranged in upper and lower sets which are angularly staggered relative to each other, Fig. 2 (not shown), so that all the tubes have the same exposure to the air stream. One of the tubes has a coolant filling aperture 8. The tubes may be of aerofoil section and may have a wire mesh capillary lining. In another embodiment, Figs. 3 and 4 (not shown), each pair of tubes whose inner ends are vertically aligned has its outer ends joined to form a U-shaped tube. The ends of the U-shaped tube may have different crosssectional areas to encourage a circulatory coolant flow through the tube.
Patent GB-148406-A (GB)
Title: Safety razor
IPC: B26B21/18
Filed: 1920-07-09
Abstract: 148,406. M³ller, E. L. July 19, 1919, [Convention date]. Razors, safety. The double-edged blade 2 has the section of a segment of a circle and is provided with a central opening into which the handle 1 is screwed. The lower face of the blade is provided with a cavity so that both edges lie freely on the hone during sharpening.
Patent GB-1082167-A (GB)
Title: Improvements in the treating of cellulose textiles
IPC: D06M15/423
Filed: 1965-05-14
Abstract: Cellulose textiles are rendered wrinkle-resistant by impregnating them with an aqueous solution containing a lower alkyl (i.e. 1-6 carbon atoms) carbamate-formaldehyde condensate and a magnesium chloride catalyst and having a pH lowered to 2 to 4 and curing the impregnated textiles at an elevated temperature for a time sufficient to cross-link the cellulose with the carbamate-formaldehyde condensate, the curing is effected under less severe conditions than are required when the pH of the impregnating solution is not lowered to 2 to 4.  The pH of the solution may be lowered by the addition of hydrochloric, phosphoric, formic, acetic, chloroacetic, hydroxy acetic, propionic, butyric, isobutyric, crotonic, oxalic, succinic, maleic, tartaric, itaconic, gluconic, citric, lactic, nitric or sulphuric acid.  The solution may contain 2-20% by weight of the condensate and 10-100% by weight of magnesium chloride hexahydrate based on the condensate.  The textile may be impregnated with the solution by dipping, padding, spraying, brushing or coating, optionally dried to a moisture content of 0-10% by weight or up to 50% by weight if the textile is to be subjected to a mechanical finishing process, e.g. pleating, polishing or embossing, and then cured preferably at 290 DEG -320 DEG F for 60-90 seconds.  Textiles comprising cotton, linen, hemp, flax, ramie, sisal, jute, straw or viscose, cuprammonium or high tenacity-modified viscose rayon, alone or in admixture with other natural or synthetic fibres which may be in the form of fibres, filaments, yarns or cloth made by weaving, felting, knitting, knotting, bonding or crocheting, may be treated.
Patent GB-1338150-A (GB)
Title: Polymer composition for curing under radiations
IPC: C08F2/02
Filed: 1971-04-19
Abstract: 1338150 Compositions cured by radiation COMMISSARIAT A L'ENERGIE ATOMIQUE 19 April 1971 [30 Jan 1970] 20448/71 Addition to 1302515 Heading C3P Articles other than surface coatings are manufactured by preparing a composition consisting of an acrylic saturated resin in solution in at least one ethylenically unsaturated monomer, the resin being a copolymer of acrylic and methacrylic acids or the esters of these acids, shaping the composition thus obtained or causing it to impregnate a porous material, and  curing the composition under the action of ionizing radiation in the presence of air, whereby the copolymer is cross-linked with the ethylenically unsaturated monomer. In the examples the compositions comprise a copolymer of methyl methacrylate and butyl or ethyl acrylate, methyl methacrylate, butyl acrylate, ethylene glycol dimethacrylate, diallyl phthalate and 1,3-butane dimethacrylate and they are cured in moulds or impregnated into plaster using γ-irradiation from cobalt-60, an electron beam and azobisisobutyronitrile.
Patent GB-318234-A (GB)
Title: Improvements in or relating to conveyor installations
IPC: B65G51/42
Filed: 1929-07-03
Abstract: 318,234. Telephon-Apparat-Fabrik E. Zwietusch & Co. Ges. Aug. 31, 1928, [Convention date]. Electrically operated and controlled from or by vehicle.-In tube conveying systems or electrical conveyers with individually driven carriers, the carrier P, Fig. 2, has a drum T with members N<1> - - N<5>, the setting of which controls the operation of the junctions V, V<2>, Z' - - Z<4> , Fig. 1. The setting shown, with the members N<1>, N<3>, N<5> turned to bear against stop pins n<1>, n<3>, n<5>, enables the carrier to travel from X to C<2>. When the carrier reaches the point S' a magnetic field acts to turn a soft iron bar W into the dotted-line position and through ratchet gearing turn the drum T one step, the member N<1> expanding a contact ring R to bridge contacts F, F<1> and complete a circuit to operate the junction member V<1>, which is returned when contact is made at a<1>. At point such as S<2> where the junction member is not to be operated, the movement of the drum T brings a non-effective member such as N<2> into position, the ring R is not expanded and the contact therefore not made.
Patent GB-662902-A (GB)
Title: Switch arrangement for systems including single-anode mercury vapour rectifiers
IPC: H02H7/12
Filed: 1949-08-05
Abstract: 662,902. Rectifying. MASCHINENFABRIK OERLIKON. Aug. 5, 1949 [Sept. 14, 1948], No. 20460/49. Class 38 (ii). In a rectifier system comprising single anode mercury vapour rectifiers operating in conjunction with a transformer providing more than one neutral point comprising one pole of the D.C. supply a high speed D.C. circuitbreaker is included between the neutral point of each rectifier transformer and the interphase transformer connected to the common neutral point (negative pole) of the system to effect economy in the switches required for the protection of the system but to avoid complete shut down in the event of a faulty rectifier, e.g. back fire. In the case of double three phase and triple single phase systems respectively connected to six anodes the former system is provided with two such switches and the latter with three switches.
Patent GB-920871-A (GB)
Title: Brassiere
IPC: A41C3/00
Filed: 1959-06-15
Abstract: 920,871. Brassieres. TEENFORMFOUNDATIONS Inc. June 15, 1959 [Aug. 4, 1958], No. 20502/59. Class 141. Brassiere cups 11, 12 each comprise coextensive outer and inner plies 23, 22 of stretchable fabric and an intermediate ply 24 of non- stretchable fabric, the intermediate ply being formed with an opening 25. The plies are independent of one another apart from their peripheral connections. The outer and inner plies are seamless. A horizontally stretchable insert 17 separates the cups.
Patent GB-208492-A (GB)
Title: Improvements in and connected with calorimetric bombs
IPC: G01N25/26
Filed: 1923-08-13
Abstract: 208,492. Darroch, J. Aug. 13, 1923. Calorimeters.-A bomb calorimeter comprises a cylinder A closed by a cap B formed with a recess in which is seated a rubber ring D of round section. The cap is held down by a nut C screwed over the cylinder, holes C<1> being formed in the nut for the insertion of tommy pins. The rim of the cylinder A is bevelled at P so that the cover will fall into its proper position. The ring F' for supporting the crucible is formed on the end of a rod F screwed into a plug F<2> which is screwed into the cover. The electrode G is screwed into a plug G' which is screwed into a tapered member O passing through the cover B from which it is insulated, and screwed into a terminal J. The oxygen supply is controlled by a needle valve K screwed into an extension B<2> of the cover B and having a passage K<2> communicating with an annular space B<2> from which the oxygen passes into the cylinder through an orifice M the end M<1> of which is bent round at right angles. The valve carries the second terminal H. The ring D is in such a position that the products of combustion cannot affect it, and the screw threads in the cover are protected by the plugs F<2>, G<2>. The calorimeter is placed in a reversible, stand E, Fig. 4, so constructed as to facilitate circulation of water under the cylinder and having slotted upturned' parts E<1>. The cylinder is formed with flats A' to prevent it from rotating in its stand'.
Patent GB-833671-A (GB)
Title: Improvements relating to power lift systems for tractors
IPC: B62D49/06
Filed: 1956-07-03
Abstract: 833,671. Tractor power-lift mechanisms. ALLIS-CHALMERS MANUFACTURING CO. July 3, 1956 [July 11, 1955], No. 20549/56. Class 79(1) [Also in Group XXIX] A power lift system for transferring a part of the downward load of a towed implement, such as a combine harvester 41, to the rear driving wheels 3 of a tractor to increase adhesion automatically in respance to increase in draught load, has automatic lift-responsive means for preventing the lifting force from attaining such a value as to cause complete loss of weight on the front wheels 4 of the tractor. The implement 41 rolls on wheels 44 and is towed through a rigid draught bar 38 universally hitched to the tractor at 33. The power lift comprises hydraulic rams 21 on each side of the tractor, oscillating bellcranks 18, connected by a lift-chain or cable 92 looped at its centre through an eye 91 on the draught bar 38. Fuid pressure for the rams is supplied by multiple pumps P 1 ...P 4 , controlled by a piston valve 93, operated through a floating lever 156 conjointly by a manual lever 169 and a draught-responsive lever 29 all of which items are identical with those described in Specification 833,670 . The present invention adds an adjustable relief valve 200 which automatically connects the ram pressure line 143 to exhaust 241 when lift pressure rises to such a value as would result in lifting the front wheels 4 of the tractor. This relief valve 200 comprises a valve-piston 202 load rightwards by ram pressure 143 and leftwards by a spring 231, adjustably compressed by a thimble and screw 223, which latter can be screwed fully down to lock the valve permanently closed when towing light implements. Specifications 672,701 and 833,672 also are referred to.
Patent GB-646115-A (GB)
Title: Improvements in means for joining pipes together or for joining pipes to containers
IPC: F16L49/04
Filed: 1948-08-04
Abstract: 646,115. Pipe joints. THERMAL SYNDICATE, Ltd., MILLER R. B., and IRVING, R. Aug. 4, 1948, No. 20553. [Class 99(i)] The end 1 of a rigid pipe or vessel of vitreous or refractory material, such as fused silica, glass, earthenware or porcelain, or of ebonite or plastic has moulded thereon a resilient flange 3 of material such as rubber or plastic, so that by pressing the flange against the resilient flange 4 of another pipe end 2, or around an orifice 46 in a vessel wall 47, a joint is provided. The flanges may be clamped in abutting relationship by plates 6, 7 drawn together by bolts 8. In a modification, a flange 10, Fig. 2, is received within a recess 13 of a flange 12, and clamping pressure is applied by external bands 14. In further modifications, a spigot portion of one flange is received in a complementary recess of the other flange extending inwardly of the pipe end, Fig. 4 (not shown); alternatively, the spigot and recess portions may be tapered, Fig. 5 (not shown), or spherical. The flanges may be formed by introducing a rubber mix or plastic moulding powder into a mould surrounding the pipe or vessel end to which the flange is adhered by vulcanizing the rubber or treating the powder, and may have embedded in them inserts such as plain or flanged metal rings, spirals of wire or metal strip, rings of zig-zag wire or metal strip or rings of canvas or wire gauze.
Patent GB-647900-A (GB)
Title: Improvements in or relating to refrigeration
IPC: F28F1/26
Filed: 1947-07-30
Abstract: <PICT:0647900/III/1> The evaporator 13 of a refrigerating apparatus comprises a shell-and-tube structure, the tubes 26 having external extruded fins which make the ratio between the outside and inside areas of the tubes more than three to one, the cross-sectional area of that portion of the shell in which the tube bundle is located being at least 40 per cent of the total inside cross-sectional area of the shell.  The compressor 11 draws vaporized refrigerant from the evaporator 13 through eliminators 19 where entrained liquid is removed, and discharges the compressed refrigerant through a pipe 22 to the condenser 12 which has inclined baffles 23, 31. Condensed refrigerant passes to the lower part of the evaporator through spaced openings in a plate 16.  The fins are extruded on the tubes by the apparatus described in U.S.A.  Specification 1,865,575.
Patent GB-121482-A (GB)
Title: Improvements relating to Electric Induction Motor Meters.
IPC: G01R11/36
Filed: 1918-12-11
Abstract: 121,482. Landis & Gyr Akt.-Ges. Dec. 11, 1917, [Convention date]. Induction motor meters. - In meters of the kind des c r i b e d in Specification 17480/13, having a U-shaped core f for the current coils and a counterpole e between them, a correspondingly-shaped plate i of stout iron with bent-over ends is attached to the core f to reduce the magnetic reluctance to the active flux of the pressure coil. A similar plate may be attached on the other side of the core.
Patent GB-1336284-A (GB)
Title: Weapon having a cartridge feed and loading device
Inventor: RIEKE W
IPC: F41A9/38
Filed: 1972-05-04
Abstract: 1336284 Cartridge feed device RHEINSTAHL AG 4 May 1972 [7 May 1971] 20768/72 Heading F3C A cartridge feed and loading device for weapons comprises a fixed delivery passage 1 extending upwardly from a magazine and having ' adjacent its upper end a rotatable disc 6 having an aperture 10 for the passage of cartridges 4. Cartridges, in use, are urged along the passage 1 by an intermittently operated driver 3 and when in succession reach the upper end of the passage, they are urged into the aperture 10 of the disc 6 by an intermittently movable slide 5, the disc ' then being rotated to change the loaded cartridge 4 from the feeding position to a position in which the longitudinal axis of the cartridge is parallel to the axis of the gun with which the device is to be used. The cartridge 4 is then urged out of the aperture 10 by a further ' movement of the slide 5 whereupon the apertured disc 6, the slide, 5, and the driver 3 are then returned to their starting positions for a new cycle, the aforesaid disc 6, slide 5 and driver 3 being operated by a driving means. In the construction disclosed the driving means comprises a motor 20 having gears mounted on its shaft, the gears, which have gaps between sets of teeth to provide the intermittent movements, drive the disc 6, slide 5 and driver 3 through crank 33, 32, 34 and rod 36, 35, 37, couplings. The rod 36 comprises two telescopic spring- loaded parts so that the disc rotates only through the required angle to bring its aperture into correct alignment with the weapon even though the crank 33 is driven through 90 degrees. The feed position of the disc 6 and the position of the disc 6 when a cartridge is fed into the weapon are determined by a stop 6<SP>1</SP> on the disc 6 and a fixed stop (not shown) or a stop 18 on the weapon respectively.
Patent GB-1467435-A (GB)
Title: Electrical insulation
IPC: H01B3/44
Filed: 1973-05-02
Abstract: 1467435 Hydrogenated diene/aromatic copolymers; electrical insulators DUNLOP Ltd and INDUSTRIE PIRELLI SpA 25 April 1974 [2 May 1973] 20823/73 Heading C3P Hydrogenated conjugated diene/aromatic copolymers having a maximum iodine equivalent of 200 mg./g., a maximum heat of fusion (measured as defined) of 20 cal./g., and a maximum vinyl content prior to hydrogenation of 25%, are used as electrical insulators, either alone or compounded, and preferably cross-linked. In Examples, hydrogenation of butadiene/styrene copolymer is effected in solution in cyclohexane in the presence of a nickel diisopropyl salicylate/ aluminium triethyl catalyst, and the products are compounded with a calcined clay, a commercial antioxidant, dicumyl peroxide and triallyl cyanurate.
Patent GB-480949-A (GB)
Title: Improvements in and relating to stiffened fabrics and articles such as collars made therefrom
IPC: D06M17/06
Filed: 1936-07-28
Abstract: A laminated fabric for collars &c. is made by securing between two layers of fabric not impregnated with thermoplastic material a fabric interlining stiffened by impregnation or coating with a thermoplastic resin composition including polyacrylic acid or its derivatives and adapted to soften on washing and to become stiff again on ironing. Preferably, the resin composition is a mixture of a polymerized derivative of acrylic acid or a -methyl or a -ethyl acrylic acid such as the ethyl or methyl ester and a polyvinyl resin or mixture of polyvinyl resins of low softening point such as polyvinyl acetate or a polyvinyl acetate-aldehyde condensation product.  The example describes the use of a cotton fabric impregnated with a mixture of (a) polyvinyl acetate dissolved in benzene and toluene and emulsified with an aqueous solution of methyl cellulose, and (b) an emulsion of polymerized methyl acrylate, as an interlining between two layers of cotton poplin.
Patent GB-492921-A (GB)
Title: Improvements in welding apparatus
IPC: B23K11/31
Filed: 1937-07-28
Abstract: 492,921. Welding. BRIGGS MANUFACTURING CO. July 28, 1937, No. 20886. Convention date, Aug. 10, 1936. [Class 83 (iv)] A repeat welding-apparatus is provided with fluid-pressure means for moving the electrode forward and away from the work, a fluidpressure-actuated switch for controlling the current to the electrode, and a reversing valve actuated by fluid pressure to control the switch and the electrode operating means. The welding gun A has a fixed electrode C and an electrode B moved in contact with the work by a fluid-pressure piston D. The reversing valve comprises a cylinder G with piston valves S, S<1>, O, O<1>. On depressing a trigger I a valve H is opened and admits pressure to a passage J, K. The valve O<1> closes one end of the passage K and fluid, through a throttle valve L flows to an accumulator P which builds up a pressure on the back of the valve O, and through a pipe 22 moves the piston D to force the electrode B into contact with the work. Fluid also flows along a channel V through a throttle valve Y to a switch cylinder W and closes the switch to complete circuit through the electrodes. At the same time fluid flows through a throttle valve Z to an accumulator X communicating with the back of the switch piston. The valve Y controls the closing of the circuit in timed relation to the movement of the electrode B, and the valve Z controls the rise in pressure in the accumulator X and the length of time of the closing of the switch. After the switch W is opened, the pressure in a cylinder M, controlled by the valve L, moves the pistons S, S<1> to the left, Fig. 11. Pressure is exhausted by the parts X, W through a port A<1> to allow a spring to open the switch. The exhaustion through a port B<1> is greater from the front of the valve O than from the back and the valve is moved to the left to close the end of the channel K. If the valve H is retained in the open position, fluid flows through a throttle valve L<1> and a pressure is built up at the back of the piston S<1>. The welding gun A and the parts X, W are then exhausting through a channel A<1>. When the pressure in the accumulator P<1> overcomes the pressure of a spacing C<1> the plungers are returned to the position shown in Fig. 11. The accumulator p<1> then exhausts through a port B<11> and the valve O<1> closes the end of the passage K and the cycle of operations is repeated as long as the valve H is open. If the valve H is closed whilst the cylinder E is under pressure exhaustion is effected through a port in the gun.
Patent GB-1011854-A (GB)
Title: Improvements in gas sampling apparatus
IPC: B01L5/04
Filed: 1961-06-09
Abstract: A composition for controlling plant-parasitic nematodes comprises as an active ingredient at least one oxazoline or thiazoline derivatives of the general formula <FORM:1011854/A5-A6/1> wherein X is oxygen or sulphur, in admixture with suitable carrier substances and/or distributing agents optionally with the addition of at least one other fungicidally, herbicidally, insecticidally or nematocidally active ingredient.  The compositions may be in the form of powder for sprinkling, or in the form of liquids such as emulsions suspensions or solutions, and may also contain synthetic fertilisers such as calcium phosphate or other calcium potassium and/or ammonium salts-particularly the phosphates and nitrates.
Patent GB-221511-A (GB)
Title: Improved steel alloy
IPC: C22C38/40
Filed: 1924-09-05
Abstract: 221,511. Poldihutte [Firm of]. Sept. 5, 1923, [Convention date]. Alloys.-Acid-resisting steel alloys contain 9- 27 per cent of chromium and 20-25 per cent of nickel, together with over 0.35 per cent of carbon and not over 0.5 per cent each of silicon and manganese. An example contains 15 per cent of chromium, 22 per cent of nickel, 0.5 per cent of carbon, 0.3 per cent of silicon, and 0.5 per cent of manganese. According to the Specification as open to inspection under Sect. 91 (3) (a), the alloys contain 20-36 per cent of nickel, over 0.2 per cent of carbon, and not over 1 per cent of silicon or manganese or both. This subject-matter does not appear in the Specification as accepted.
Patent GB-361340-A (GB)
Title: Improvements in metallic piston packings
IPC: F16J9/20
Filed: 1930-07-11
Abstract: 361,340. Piston rings. HARDY, H. M., R.F.D. No. 3, Muskegon, Michigan, U.S.A. July 11, 1930, No. 21023. [Class 122 (i).] In piston-rings of the type comprising a split bearing ring 26 housed in a circumferential groove in a split carrier ring 25, the internal diameter of the bearing ring is greater than the least external diameter of the carrier ring when both rings are fully compressed. Recesses 28, 30 may be provided in one or both rings. Lubricating oil collects in the chamber between the rings during the power stroke of the engine and assists expansion of the bearing ring. On the exhaust stroke the oil is expelled by the carrier ring and lubricates the cylinder wall. Reference has been directed by the Comptroller to Specifications 123,336 and 221,410, [both in Class 122 (i), Engine and like cylinders &c.].