baber/WOPTO huggingface dataset:
Patent GB-919182-A (GB)
Title: Process for the production of polyolefins
IPC: F02B47/00
Filed: 1959-04-30
Abstract: A polyolefin (e.g. polyethylene) produced according to the process of the parent Specification, is treated, after separation from the polymerization mixture, with an organic peroxide, whereby cross-linking is effected and the physical properties of the polyolefin are improved.  Of the many peroxides specified those claimed and exemplified are t-butyl, di-t-butyl, t-cumyl-t-butyl and dicumyl peroxides.  The treated polyolefins may be subsequently moulded.
Patent GB-1412852-A (GB)
Title: Alternating current power supply circuit
Inventor: VAN CLEAVE G W
IPC: G05F1/445
Filed: 1973-03-28
Abstract: 1412852 Automatic voltage control INTERNATIONAL BUSINESS MACHINES CORP 28 March 1973 [13 April 1972] 14836/73 Heading G3R An A.C. power supply circuit includes a switch connected in series with a load and operated to pass current for a controllable interval during each supply half-cycle. A switch control signal is formed by summing a load voltage representing feedback current and a further current representing the duration of the switching interval. As shown in Fig. 2, a lamp 23 in a copying machine is supplied from an A.C. source 37 over a triac 21 which is turned on for a part of each half-cycle. The lamp voltage is detected and fed over leads 27, 29 to a bridge rectifier 31 which, through a transistor 33, supplies a current indicative of the lamp voltage to a summing capacitor 13. A transistor 35 biased by a Zener diode 39 supplies a continuous reference current to the capacitor 13, while a third current signal is received from a transistor 55 only when a switch 53 is closed by current flowing in the lamp circuit. The resultant charge on capacitor 13 determines the rate of charging of a capacitor 43 which is reset by devices 51, 49 at the beginning of each half-cycle. When the voltage on capacitor 43 reaches a pre-set value, a detector 45 causes a  circuit 47 to supply a firing pulse to the triac 21. The addition of a firing-angle dependent current to the summing junction by way of transistor 55  is stated to achieve regulation of the RMS load voltage. In a modification, Fig. 3 (not shown), switch 53 is omitted and transistor 55 is connected directly to the bridge 31. In this way, current from transistor 55 flows to earth except when feedback current flows from the lamp circuit, when the two current signals will oppose each other.
Patent GB-1093795-A (GB)
Title: Microwave heating device
Inventor: HILTON KENNETH
IPC: H05B6/78
Filed: 1965-04-07
Abstract: 1,093,795. Microwave heating. HIRST (MICROWAVE HEATING) Ltd. Feb. 10, 1966 [April 7, 1965], No. 14848/65. Heading H5H. A microwave heating apparatus is of the type utilizing a serpentine waveguide formed by two trays, each comprising parallel channelsection members. According to the invention, each tray consists of two side bars 14, 15 and a number of channel members 12, 13 &c. arranged to extend in parallel formation between the side bars with their adjacent side walls in contact with each other and their bases in a common plane. Alternate pairs of contacting side walls stop short of opposite side bars to leave gaps 20 which form irises between adjacent waveguide sections. At the ends opposite gaps 20 the pairs of side walls are received in notches 16 formed in the side bars. The bases of the channels extend for a short distance under the side bars and are fastened thereto by clamping plates (17, Fig. 2, not shown). Further channels 21, 22 extend beyond the side bars 14, 15 and are provided with flanges 23, 24 for connection to a source and a load. Opposite the flanges 23, 24, the channels 21, 22 are clamped to one of the clamping plates (17) by blocks 25, 26. Side bars 14, 15 and blocks 25, 26 stand proud of the plane defined by the free edges of the channels whereby, when one tray is inverted and placed above the other, a gap containing the median plane of the serpentine waveguide is formed. To facilitate insertion in the gap of material to be heated, the trays are hinged to each other by hinges (31, Fig. 2), attached to the flanges 23, 24 of the upper tray and to apertured plates (30) which cover the flanges on the lower tray. The fastening means is provided with a safety switch. The bases of the channels may be provided with inlet and exhaust apertures for ventilation. The inlet apertures may be specially shaped to provide an " air knife " and may communicate with inlet manifolds containing infra-red heating elements.
Patent GB-232076-A (GB)
Title: Improvements in, or relating to, bag envelopes and the like
IPC: B65D27/04
Filed: 1924-06-19
Abstract: 232,076. Mac Fisheries, Ltd., and Honey, W. J. June 19, 1924. Paper bags.-A bag for fish is provided at one end with a hole d through which the tail of the fish protrudes, and at the other with a flap b, which may be gummed. The corners e may be turned down and sealed at f, so that the sloping sides g provide a support for the fish A transparent window c, preferably of cellulose ester, is provided on one side of the bag.
Patent GB-108948-A (GB)
Title: Mud Guards for Vehicle Wheels.
Inventor: GUISE CHARLES
IPC: B60B7/00
Filed: 1916-12-16
Abstract: 108,948. Guise, C., and Southall, T. J. Dec. 16, 1916. Mud-guards rotating with wheels. - The outer part of a sidesplash guard is formed of bristles a or other flexible material carried on a wood or like base b to which spring clips d are secured for attachment to the wheel spokes c, means being provided for adjusting the diameter of the guard to accommodate for wear &c. of the tyre. In the form shown, the base b is formed in sections to which slotted plates k, k<1> are fitted, the plates being locked in adjusted positions by means of bolts and nuts m, m<1>.
Patent GB-825492-A (GB)
Title: An improved attachment for the lifting carriage of a masted lift truck
IPC: B66F9/18
Filed: 1957-05-10
Abstract: 825,492. Masked lift trucks with gripping devices. REGISTERED PROJECTS Ltd. (Jungheinrich & Co. Maschinenfabrik, H.). March 13, 1958 [May 10, 1957], No. 14889/57. Classes 78 (3) and 78 (4). A drum-carrying attachment for a masked lift truck comprises a pair of jaws a, c, pivoted at d and f respectively, to a frame i mounted on the lifting carriage of the truck, and interconnected by a link g. In operation, the lower jaw a is brought against the underside of a rim b of the drum and on raising the frame i the jaw a pivots against the action of a spring h and brings the upper jaw c down to hook into the drum top. The drum is also engaged by a support member (not shown) secured to the carriage below the jaws.
Patent GB-863642-A (GB)
Title: Improvements in or relating to telephone sub-sets
Inventor: BEADLE ANTHONY CRISP
IPC: H04M1/58
Filed: 1957-05-10
Abstract: 863,642. Substation circuits. STANDARD TELEPHONES & CABLES Ltd. April 3, 1958 [May 10, 1957], No. 14921/57. Addition to 706,785. Class 40 (4). A substation having a non-linear shunt 10, 11 for the receiver 12 as described in the parent Specification has a blocking capacitor 4 connected between the line terminals, and a linebalancing network 1, 2, 3 connected across the blocking capacitor 4. The receiver 12 is connected across a balanced bridge 5, 8, 10, 11, Fig. 1, or a simplified version 15, 10, 11, Fig. 2, in series with a limiting resistor 16. A ringer 14 is connected across the line terminals in series with the blocking capacitor 4.
Patent GB-272235-A (GB)
Title: Process and apparatus for washing coal, schlamms and the like
IPC: B03B5/62
Filed: 1927-06-07
Abstract: 272,235. Delplan, V., and Quairiaux, A. June, 4, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Upward-current classifiers. -In apparatus for washing coal, slimes, and other minerals, the material to be treated is fed with a stream of water along a launder 12 to which an upward-current is admitted through a screen 10, whereby classification is effected. The materials then pass to perforated compartments 15 of a rotary drum 1, to the interior of which water is admitted through a pipe 6; the light materials pass over a weir 17, while the heavy are carried round by the drum and are discharged through an adjustable outlet 5. The rotation of the drum 1 may be intermittent; or the water supply thereto may be made to pulsate by means of valves 7, 8 which may be operated by means of cams 3 on a flywheel 2.
Patent GB-543005-A (GB)
Title: Improvements relative to the protection of fuel and like tanks
IPC: B64D37/06
Filed: 1940-10-09
Abstract: 543,005. Fuel &c. tanks. FIREPROOF TANKS, Ltd., and DANIELS, L. S. Oct. 9, 1940, No. 15060. [Class 69 (i)] Tanks, such as fuel and oil tanks for aircraft, are protected against damage, as by a bullet, by means of a layer of sponge rubber 3 to which is affixed a thin layer 4 of vulcanized rubber which is placed between the sponge rubber and the wall 1 of the tank and on puncture tends to bend towards said wall against the pressure of the fuel &c. in the tank. Further covering, such as inner and outer layers 2, 5, of tough rubber, may also be provided. The protective coating may be quilted into oil-tight areas as in Specification 538,580.
Patent GB-137748-A (GB)
Title: Improvements in electric chain-welding machines
IPC: B21L3/02
Filed: 1919-06-16
Abstract: 137,748. Armstrong, G. J. June 16, 1919. Welding.-In an electric chain-welding machine of the type in which pairs of electrodes of opposite polarity engage opposite sides of the joint in the links, the electrodes are carried by swinging arms instead of slides, so as to avoid damage due to pieces of metal engaging between the slides and slideways. As shown, each electrode of the two pairs a, band c, d is carried by an insulated block 23 on a separate arm 26, the arms being mounted on pivots 27 below the welding point so as to facilitate access to the link being welded. Each pair of arms is operated by a single lever 31 through a cylindrical yoke 33 capable of rocking in the lever and yieldingly connected by lugs 34 and springs 37 to links 35 connected to the arms 26 or blocks 23, so that the electrodes may accommodate themselves to any variations in the engaged portions of the link. The arms have guiding-pieces engaging guides on the framing and also engaging flanges 42, so that the electrodes may move in accurate relation to the work. The levers 31 are operated by cams 29 on a shaft 19 rotated by spiral or worm gear from a shaft 9 which is rotated by spur gear from the main shaft 3. The chain is fed by a grooved block 15 mounted on a shaft 14, which is rotated by an arm 18 on the shaft 19 engaging a peg-wheel 16. The weld is completed by pressure plungers 44 operated by levers 45 from cams 49 on the shaft 9. Several pairs of electrodes may be used. Specification 135,136 is referred to.
Patent GB-668598-A (GB)
Title: Method for dyeing wool
IPC: D06P1/673
Filed: 1950-06-16
Abstract: Wool is dyed by a single bath process wherein the bath contains a chrome dyestuff, a chromate, a non-ionic surface-active compound of the polyglycol ether type, and a magnesium or alkaline-earth metal salt which is not precipitated by the ingredients of the dye-bath. Suitable wetting agents are alkylphenol-, alkylxylenol-, alkyl- or dialkylnaphthol-polyglycol ether with an alkyl radical which contains 4 to 20 carbon atoms and a polyglycol ether chain formed from 6 to 30 molecules of glycol; polyglycol ethers of aromatic hydroxy compounds containing at least three benzene nuclei which may be linked directly or by an aliphatic bridge whilst two of the said nuclei may be fused together; polyglycol ethers of aromatic hydroxy compounds substituted in the nucleus by at least two hydroaromatic, aromatic or araliphatic radicals so that at least one of the radicals is a hydroaromatic radical; halogen- or methyl-substituted aryl or aralkyl derivatives of phenol polyglycol ethers; and products of the reaction of ethylene oxide on an alcohol, aliphatic carboxylic acid or aliphatic carboxylic amide.  Examples are given of the dyeing of wool from baths containing various azo dyestuffs, potassium chromate, magnesium sulphate, sodium sulphate and the non-ionic wetting agents alkylxylenyl-polyglycol ether, oleyl polyglycol ether, oleic acid amide polyglycol ether and benzyl-p-hydroxydiphenyl-polyglycol ether.
Patent GB-515122-A (GB)
Title: Improvements in or relating to thermal electric switches
IPC: H01H37/56
Filed: 1938-05-23
Abstract: 515,122. Thermal switches. HALLOWELL, E. May 23, 1938, No. 15316. [Class 38 (v)] A thermally-operated switch adapted to be moved in one direction as the result of a current impulse and to return to its original position after a time interval of the order of 15-60 minutes comprises two bimetallic coils 11, 12 which carry co-operat- 'mg contacts 17, 18 and move in the same direction but at slightly different rates in response to variations of ambient temperature, the coil 11 being also subject to heat from a heater 23 which is put into operation by the current impulse. The contacts normally engage each other with a certain pressure. When a current impulse in, for example, a tuned circuit, operates a relay and causes the closing of heater circuit 23 for a few seconds, a difference in temperature is produced between the coils 11, 12 sufficient to separate the contacts 17, 18, and owing to masses of metal 15, 16 and to heat lagging 32, the coils are slow in returning to their original position to cause re-engagement of the contacts. The time of break is greater if the ambient temperature is high. The strip 12 is shorter and thinner than the strip 11 and so becomes hotter when heated by current passing through the strips. This causes a decisive "make" and "break." The casing 10 may be mounted on the side of a water heater, which is then controlled by the contacts 17, 18. Specification 420,405, [Group XXXV], is referred to.
Patent GB-311778-A (GB)
Title: Improvements in electrical condensers
IPC: H01G9/022
Filed: 1929-05-16
Abstract: 311,778. Dubilier Condenser Co. (1925), Ltd., (Assignees of Davidson, J. C.). May 16, 1928, [Convention date]. Electrolytic condensers are made according to a process in which a dielectric is formed on the surfaces of at least one of a number of conducting elements, spacing means is interposed between the elememts, and the assembly is immersed in a solution comprising a plurality of chemicals adapted to harden on removal of the solution. The hard mass contains water in combination therewith and the chemicals used neither are hygroscopic nor readily yield up water. Foil strips 1, 2 of the film-forming class, such as aluminium or magnesium, are wound up with strips 3, 4 of porous or fibrous material, such as cotton cloth, muslin, silk, linen, or paper, brought through a solution 6 in a tank 5, and led on to a mandrel 9. A source of current is applied to the rollers and tank as shown to form a film 20 on each side of the strips as they pass through the solution, which may be heated. When sufficient material has been wound on the mandrel 9 the condenser may be dipped in wax to prevent loss of the impregnating substance before it hardens. The films can be formed after the condenser is wound, but this causes some of the impregnating material to be used up and lost, or the forming can be done by heating in an oxidizing atmosphere. Both foils should be coated if the condenser is to be used on A.C. circuits, but only one need be coated if the condenser is to be used on D.C. circuits, the forming current in this case being applied between the two rollers carrying the foil strips (Fig. 3, not shown). Suitable chemicals which are not hygroscopic and do not give up water can be provided by mixing two or more substances into a resultant substance having the requisite properties, such properties being chemical neutrality to acids and alkalis, adhesiveness, abundance of free ions, and small current leakage. Preferably an inorganic alkaline salt neutralized by an organic acid is used, examples of which are given in the Specification. Fig. 6 shows a finished condenser embedded in suitable material 12 such as sand, gravel, or pulverized cork, the roll being secured by, for example, elastic bands 16, and the foil strips being cut and turned up to form terminals 14, 15.
Patent GB-119921-A (GB)
Title: Improvements in Planing Machines for Wood, more particularly for Working Parts of Disused Boxes.
Inventor: MELBOURNE ROBERT
IPC: B27B5/04
Filed: 1917-10-25
Abstract: 119,921. Melbourne, R. Oct. 25, 1917. Planing; tools.-In a wood-planing machine more particularly for working parts of disused boxes, the bottom cutter block H carries adjustable saw teeth d. in addition to adzing irons a, whereby the wood has one or both edges removed simultaneously with planing. Plates j<1> are adjustably fixed on each side of the bottom cutter block and are slotted to allow passage of the saw teeth. The boards are fed by rollers B and prevented from rising by a plate D secured to the fence E and supported on the opposite side of the boards by a further plate. After passing the bottom cutter block, the boards are engaged by slippers S carried by a laterally-adjustable pivoted lever b which is pressed by an adjustable spring j; the severed edges of the boards are engaged by rollers 0, l, and removed from the bedplate. The roller l is carried by a nut r held against rotation by a lever s and adjusted by a screw m. A laterally and vertically adjustable box P carries the slippers S and rollers 0, l. After passing the box P, the boards are grooved, tongued, or planed by cutters U and planed by cutters V. Adjustable fences W, X are provided
Patent GB-630609-A (GB)
Title: Improvements in writing instruments
IPC: B43K7/00
Filed: 1945-06-19
Abstract: 630,609. Fountain pens. WICKS, E. A., and FEHLING, H., R. June 19, 1945, No. 15519. [Class 146 (iii)] In a fountain pen of the ball-point type, the ball is so mounted as to be capable of yielding resiliently both in the direction of the pen axis and in a direction normal to the axis. In one form, Fig. 1, the ball housing 1 fits in a rubber sleeve 2 secured to the barrel 4, and is attached to the reservoir 6 by a flexible connection 7. A rubber sleeve 8 is fitted between the reservoir and the casing. In a modification, the housing 1 and reservoir 6 are rigidly connected, the reservoir abutting at its inner end against a hollow rubber or other resilient block 9. An enlarged part 11 between the members 1, 6 is spaced from the end of the barrel 4 by a rubber washer 12 and bears on its other face against a rubber bush 10 through which the reservoir 6 passes. Clearance 13 is provided in the outer end of the barrel 4 to allow lateral movement of the housing 1. The reservoir 6 may be a capillary tube as described in Specification 573,747. Specifications 571,698 and 629,226 also are referred to. The Provisional Specification describes a construction similar to that shown in Fig. 3, but wherein the parts 10, 12 are omitted and only axial movement of the members 1, 6 is permitted.. In this construction, the block 9 may be replaced by a spring.
Patent GB-539888-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B19/04
Filed: 1940-10-21
Abstract: 539,888. Photographic camera bodies. KODAK, Ltd. Oct. 21, 1940, No. 15524. Convention date, Feb. 17, 1940. [Class 98 (i)] A camera has a body comprising front and rear members connected by tongue and groove joints and forming the front, rear, and side walls, and caps closing the upper and lower ends to form the top and bottom walls, the front and rear members having formed in them grooves parallel to the top and bottom walls in which are held frame members carrying the elements of a view finder. The twin-lens rollfilm camera shown comprises front and rear body members 2, 3 forming the front and side walls and connected by tongue and groove connections 4. The top wall is formed by a cap 6 having flanges 7 engaging over flanges 9 on the members 2, 3, and the bottom wall by a removable cap 61 carrying the roll film, spool holder 60 and exposure frame 71. The body members 2, 3 are formed at their upper parts with abutting partitions 'forming a pair of parallel vertical walls 38 which are connected bv transverse walls 40 to the sides. Grooves 30 in the walls 38 receive flanges 26 on the side walls of a frame 20 which carries the inclined mirror of a reflex finder giving a large, and preferably full-size, image. The viewing lens 35 of the finder is mounted in a frame carried in grooves 36 in the walls 38. The finder hood is formed by a pair of members 42, 44 hinged to the cap 6 and having side wings 47, 48 which, when the hood is closed, are housed in the side compartments formed by the walls 58, 40. The finder lens 13 is carried by a spring ring which is held in place by lugs 18 on it which engage lugs 19 on the mirror frame 20.. The lower cap 61 is held by a latch 65 pivoted at 66 and engaging under a latch element 68 carried by a wall 69 at the top of the roll-film holder, which, together with the exposure frame 74, forms part of a structure carried by with the cap. The lower trunnions of the film supply and take-up spools are held respectively in a socket 79 and a holder 83 rotated by a winding knob 86, the upper trunnions being held in notches 80 in the ends of a spring strip 81.
Patent GB-1045744-A (GB)
Title: Charging device for worm presses
IPC: B30B9/12
Filed: 1963-04-19
Abstract: 1,045,744. Worm presses. LANG GEPGYAR. April 19, 1963 [April 20, 1962], No. 15567/63. Heading B1D. In a vertical screw extrusion press where material from a hopper passes downwardly through a spoked driving wheel connected to the upper end of the screw, a cylindrical casing surrounds the start of the screw. As shown in Fig. 1, material from a hopper 9 passes through a hollow wheel journalled at 7 which has a cylindrical wall 14 held by vertical or oblique spokes 13. A cylindrical casing 4, surrounding the start of the screw carries, via spokes 3, the upper bearing 2 of the screw.
Patent GB-139387-A (GB)
Title: Means for the production of combined induced and forced draught in furnaces
IPC: F23L17/00
Filed: 1919-06-20
Abstract: 139,387. Prat, E. April 19, 1919, [Convention date]. Chimneys. - The sheet-iron chimney 2 of a furnace is provided with an outer casing 3 which acts as a strengthening and stabilising member, whilst air for combustion is heated in the intervening space between the chimney and casing. A portion of the combustion products is delivered by a fan, which, as shown, may be situated in the chimney, to a nozzle 15 where it exerts an aspirating action on the remainder of the gases.
Patent GB-760273-A (GB)
Title: An improved method of heating gas by means of a heat-insulator furnace and apparatus therefor
IPC: F28D17/04
Filed: 1954-05-27
Abstract: 760,273. Heat-accumulator gas-heating furnaces. HOLMBERG, T. F. May 27, 1954 [May 13, 1954], No. 15672/54. Class 64(1) In a gas heater in which two heat-accumulator chambers 1, 2, or groups of such chambers, are used one at a time to heat the gas, e.g. chlorine-containing gas, while the other chamber or group of chambers is being heated, more gas than is needed at the place of consumption is supplied to and heated in one chamber 1 or group of chambers, and the surplus flows through a pipe 12 to the other chamber 2 or group of chambers and helps to heat it or them. Thus reversing valves are not needed in the heated gas outlets of the chambers 1, 2, where they are liable to corrosion. Valves 4, 5 and 8, 9 control the supply of combustion gas and air to the chamber being heated, and a reversing valve 14 connects the supply pipe 13 of the gas to be heated to one heat-accumulator chamber, and the other chamber to the flue pipe 15.