baber/WOPTO huggingface dataset:
Patent GB-1379506-A (GB)
Title: Receptacle having a distendable sidewall
IPC: C12M1/26
Filed: 1972-05-23
Abstract: 1379506 Micro-organism sampling device BAXTER LABORATORIES Inc 23 May 1972 [25 May 1971] 24158/72 Heading C6F A test device useful for determining the presence of micro-organisms on a flat surface includes a shallow plastics receptacle 15, Fig.3, containing gelled culture medium, and a resiliently flexible side wall 18 permitting distension thereof when the top of the side wall is pressed against the flat surface so that the medium is brought into contact with the flat surface. The top portion may be formed as an out-turned rolled rim, as shown in Fig.3, or include upwardly extending and distendible tabs. Alternatively, the side wall itself may be provided with convolutions which yield under stress. The device may have a cover with depending lugs or a downwardly depressed skirt 20, Fig.5.
Patent GB-296093-A (GB)
Title: Improvements in the photochemical production of vitamin d from ergosterol
IPC: A61K31/592
Filed: 1928-08-22
Abstract: 296,093. I. G. Farbenindustrie AktÀ- Ges. Aug. 2t). 1927, [Convention ½(tfc]. Vitamins.-In the 'production of vitamin D by the irradiation of ergcsterol by ultra-violet rays, the exposure is interrupted before, all the ergosterol has been transformed, the interruption being determined at a point such that the ab. sorption of light between the wave lengths A = 250 and A. = 230 is. at, or approximately at, a maximum. The progress of the reaction is checked by passing a solution of ergosterol which has been subjected to ultraviolet rays through an apparatus wherein absorptive power is tested. The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of a range of wave lengths between # = 300 and A =' 230. This subject-matter does not appear in the Specification as accepted.
Patent GB-249033-A (GB)
Title: Improvements relating to worm, spiral, helical and similar gears
IPC: F16H1/16
Filed: 1925-09-30
Abstract: 249,033. Shillito, B. J. Sept. 30, 1925. Toothed gearing.-Single ball race thrust bearings for worm, spiral, helical or similar gears have one race pressed against the balls by a number of springs arranged annularly. The Figure shows worm wheel and worm shafts 1, 17 each provided with two single ball race thrust bearings oi which the worm wheel thrust bearings 11 each nave one race 6 abutting against an inner race 3 of a load bearing 5, while the other race 7 of the thrust bearing is housed slidably in the cover 8 and pressed by helical springs 10. The worm shaft thrust bearings 13 are similarly mounted and are spaced from load bearings 20 by loose collars 22.
Patent GB-615775-A (GB)
Title: Improvements in or relating to liquid dispensing apparatus
IPC: G01F15/06
Filed: 1946-08-15
Abstract: 615,775. Counting-apparatus. AVERYHARDOLL, Ltd., and FRASER, J. Aug. 15, 1946, No. 24348. [Class 106 (i)] Mechanism for showing the cost of a quantity of liquid delivered by a liquid dispensing apparatus is driven in common with quantity indicating mechanism and comprises a band on which is marked in sequence the cost of increasing numbers of unit quantities of the liquid and which is traversed past a window at such a rate that it moves one step for each unit quantity delivered, and a masking band interposed between the first band and the window is traversed past the window at such a rate that an aperture in the masking band registers with the window only at the completion of the delivery of each successive unit quantity of liquid. A gear 45, driven together with indicating pointers 12, 13 from the meter of the dispensing apparatus, drives a pinion 44 which via a bevel pinion 42 drives a flange 34 of a tubular shaft 21 mounted on a sleeve 18 which is rotatably mounted on a shaft 19. The tubular shaft 21 is connected by a train of gears 46, 47, 48, 49 to the shaft 19, the gearing being such that the shaft 21 rotates once for each revolution of the pointer 12 and the shaft 19 once for each revolution of the pointer 13. On the shaft 19 is a flange 22 on which is a friction washer 26 and a disc 27, the washer being secured to the flange and the disc. Located on a boss 28 on the disc is a drum 31, the rim 32 of which carries a band 50 or markings showing cost markings corresponding to the quantity markings on dial 11. Resting on a friction washer 39 on the flange 34 is a drum 35 having a rim 36 which surrounds the rim 32, the drum being urged into frictional contact with the flange by a spring 37. An aperture 51 in the rim 36 registers with the window 14 once per revolution, whenever the pointer 12 reads zero, so that the cost of the quantity of liquid shown by the pointer 13 is visible through the window on the inner drum 31. To duplicate the reading at the rear of the apparatus the drum 31 has an upper and a lower set of markings and the drum 35 has upper and lower 'apertures spaced 180‹ apart. Catches (Figs. 3, 4, not shown) on the drums engage stop pawls when the drums are at zero so that when the readings are being returned to zero the drums cannot turn too far. Also, the disc 27 carries a pawl 63 urged into contact with ratchet teeth 64 on the shaft 21, the ratchet slipping during forward movement of the drums but engaging during reverse movement so that the disc 27 turns on the shaft 19 and turns the drum 31 with the drum 35 for zeroising.
Patent GB-1134245-A (GB)
Title: Improvements in or relating to the control of thermal expansion of generally circular cross-section bodies
IPC: B22D19/00
Filed: 1966-06-01
Abstract: 1,134,245. Pistons. HEPWORTH & GRANDAGE Ltd. 1 June, 1966 [4 Feb., 1966], No. 24372/66. Heading F2T. A light metal piston 1 has a cast-in expansion controlling ring 2 of a material having a thermal expansion rate different from that of the piston material, the ring being elliptical or oval and being disposed adjacent the external surface of the piston over two first circumferentially extending zones A normal to the gudgeon pin axis and adjacent the internal surface of the piston over two second circumferentially extending zones B extending between the first zones on the gudgeon pin axis. There may be two or more axially spaced rings. The ring or rings may be of steel.
Patent GB-277178-A (GB)
Title: Improvements in or relating to refuse or dust bins
IPC: B65F1/12
Filed: 1926-10-02
Abstract: 277,178. Tucker, G. M. Oct. 2, 1926. Refuse-bins are provided with bottoms 2 slidably mounted so as to close either end, the edges of the bodies having inwardly projecting beads 4, with or without beads 6 on the bottoms. The bottom may have one or more drainage holes, and the body may have vertical strengthening members.
Patent GB-654006-A (GB)
Title: Improvements in or relating to radio receivers having automatic frequency control
IPC: H03J7/02
Filed: 1948-09-17
Abstract: 654,006. Radio receiving sets. PHILCO CORPORATION. Sept. 17, 1948, No. 24430. Convention date, Oct. 3, 1947. [Class 40 (v)] In a radio receiver having an automatic frequency control system and a manual control element, and intended for use in the vicinity of electric power circuits, during manual contact of the control element a voltage derived from the electrostatic field surrounding the electric power circuits is developed within the receiver, to render the automatic frequency control system automatically ineffective. As shown, a radio receiver comprises R.F. amplifier 13, mixer stage 15, local oscillator 16, I.F. amplifier 19, and detector and frequency discriminator 20, the A.F.C. being applied via a reactance valve 18 to the local oscillator. On the operator touching the manual tuning control 22, which is constructed of conductive material but insulated from the chassis, an alternating voltage 50 is applied to the grid of valve 33, the output of the valve being coupled through capacitor 43 to point p of a doublediode limiter 52, 53 and the A.F.C. bias also being applied through network 47, 48, 58, to the point p. The magnitude of the potentials E + and E - applied to the limiter are arranged to exceed the excursions of the A.F.C. bias but to be substantially less than the amplitude of the output from the valve 33. The point p is coupled through a filter 54 having a time constant which is long relative to one cycle of input voltage 50 so that only the D.C. component, normally zero in value is developed across capacitor 56, the limiter preventing variation due to the A.F.C. of the zero bias developed across capacitor 56 during manual tuning, but permitting operation of the A.F.C. when the operator's hand is removed from the control 22. The time constant of filter 54 may be sufficiently long to maintain the zero potential across capacitor 56 during momentary release of the knob 22. In an alternative arrangement, Fig. 1 (not shown), the output from the valve 33 operates an electromagnetic relay which removes the A.F.C. bias.
Patent GB-171788-A (GB)
Title: Improvements in or relating to buffing or polishing wheels
IPC: B24D13/08
Filed: 1920-08-24
Abstract: Abrasive for application to the surface of a buffing or polishing wheel is composed of decomposed silica, pulverized flint, stearic acid, mutton tallow, and petrolatum.
Patent GB-787094-A (GB)
Title: Thermostatic electric control device
Inventor: WEBER VICTOR
IPC: H05B1/02
Filed: 1955-08-26
Abstract: 787,094. Thermal switches; switches held set and freed mechanically. ROBERTSHAWFULTON CONTROLS CO. Aug. 26, 1955 [Jan. 3, 1955], No. 24602/55. Class 38 (5). A switch has contacts movable with a snapaction by a thermal element via an actuating lever, one end of which is pivoted on a differential adjustment lever which has one end pivoted about a fixed point and the other end biased against an adjustable stop. The thermal element comprises a diaphragm 20, as shown, which is adjustable by a screw 16 and has an operating button 22 acting on a snap-action mechanism comprising levers 30, 40 and a tension spring 38. Expansion and contraction of the thermal element thus causes closing and opening of contacts 52, 56, 58. In order that the temperature differential may be varied by reducing the contact opening temperature, the actuating lever 30 is pivoted at 32 to the differential adjustment lever 70 which is pivoted at 72 and biased to the right by an adjustable spring 75. Thus on contraction of the thermal element, the pivot 32 and lever 30 are moved to the right to an extent determined by the adjustable stop 88 so that the spring 38 has to move further before passing over-centre, i.e. the element 20 has to cool to a lower temperature. The contacts may be closed manually by rotating a knob 96 so that a projection 100 on a rod 94 connected thereto is forced to the left by a cam 102 to move the snap-action mechanism over-centre.
Patent GB-890913-A (GB)
Title: Improved process for the polymerisation of alpha-olefins
IPC: C08F10/00
Filed: 1958-07-31
Abstract: In the polymerization of a -olefins in hydrocarbon solvents to obtain prevailingly isotactic polymers using catalysts produced by contacting organometallic compounds with transition metal compounds of Group IVa, Va or VIa metals in a valency state lower than the maximum, the molecular weight of the polymer is reduced by the introduction into the reaction system of one or more hydrogen halides such as hydrogen chloride, e.g. in 0,5 to 100 mols. per 100 of organometallic compound.  A complex with the catalyst is said to be formed.  In the example propylene is polymerized in heptane using TiCl3+AlEt3+HCl with purification and extraction of product being effected with heptane, water, conc. HCl, ether and heptane. Specification 850,585 is referred to.
Patent GB-683444-A (GB)
Title: Improvements in or relating to the harvesting of potatoes and other tuberous vegetables
IPC: A01D33/08
Filed: 1950-10-10
Abstract: 683,444. Potato harvesters. WESTER, P. Oct. 10; 1950, No. 24726/50: Class 6(iii) [Also in Group XXX] A machine for harvesting potatoes: comprises rows of digging members 15 rigidly attached to a conveyer 13, a vibrating sieve 19 pivoted at the rear of the machine and a suction tube 30 communicating with the sieve for withdrawing and separating the potatoes from the waste material. As shown the tube 30 is mounted on a separate vehicle 24 detachably connected to the front vehicle 1, the vehicle 34- comprising a motor-driven fan 28 which creates a suction in the tube 30. The potatoes and waste material strike against a grating 31 and the waste material passes through the grating and is discharged though an opening 32. The potatoes are collected in a box 33 provided with a hinged rubber covered bottom 34 which is held closed by the suction in the tube until it is opened by a predetermined weight of potatoes which are discharged into a container 35. The conveyer 13 and sieve 19 are driven by chain and sprocket gearing from a transverse shaft 6 geared to a shaft 4 driven by the tractor which is connected to a drawbar 3 which may be raised or lowered by a hydraulic device on the tractor.
Patent GB-954369-A (GB)
Title: Drum-type fan rotor with forwardly curved blades
IPC: F04D29/30
Filed: 1960-07-15
Abstract: 954,369. Centrifugal fans. B. ECK. July 15, 1960 [July 24, 1959], No. 24793/60. Heading F1C. In a drum-type fan rotor with forwardly curved blades 6, Fig. 2, and having two annular discs 2, 3 to the inner surfaces of which the ends of the blades are secured, each blade outlet part deviates from the preceding arcuate part of the blade by the radius of curvature R<SP>1</SP>, Fig. 4, being either larger (as shown) or smaller than the radius of curvature R of the preceding arcuate part. The outlet angle of the blades may differ by 15 to 20 degrees from the tangential direction. Short intermediate blades may be provided between the blades 6. As shown in Fig. 7, the radius of curvature of the outlet part may be infinite.
Patent GB-1494608-A (GB)
Title: Method for the manufacture of soil modifiers from waste materials of the manufacture of titanium dioxide
IPC: C09K17/00
Filed: 1976-06-15
Abstract: 1494608 Ferric oxide-ferric sulphate soil modifier SOC ITALIANA RESINE SIR SpA 15 June 1976 [8 July 1975] 24809/76 Heading C1A A mixture comprising from 80 to 95 weight per cent of ferric oxide and ferric sulphate in an oxide to sulphate weight ratio of from 0À2:1 to 2:1, is prepared by calcining a material substantially consisting of partially dehydrated ferrous sulphate heptahydrate obtained as a waste material in the production of TiO 2  from ilmenite or slags thereof by the sulphate process; the partially dehydrated ferrous sulphate hydrate which has an average of from 1 to 5 moles of water of crystallization per mole of ferrous sulphate being calcined in an oxidizing gas at from 500 to 600 C. to convert from 80 to 95 weight per cent of the material into ferric oxide and ferric sulphate. The mixture may contain other components such as compounds of magnesium silicon, aluminium and titanium. The mixture as obtained is used as a soil modifier in treating compact soils, e.g. clays.
Patent GB-319897-A (GB)
Title: Improvements in or relating to machines for grinding ores minerals stones and the like
IPC: B02C17/18
Filed: 1928-08-29
Abstract: 319,897. Broadley, J. R. Aug. 29, 1928. Ball and like mills.-A tube mill a is provided with a decantation vessel or classifier c rotatable with the mill and provided with a port d at or near its periphery giving outward egress through a passage e and pipe or pipes g devised to lead tailings back to a central axial pipe h passing through the classifier c and grids b thereby providing for the return of the tailings to the mill a for further grinding. The ground material overflows at the outlet l and the tailings are assisted back to the mill by a water jet from the cock i. A circular or conical baffle u is provided in the classifier around which the pulp and tailings must flow. The classifier may extend beyond the trunnions k supporting the mill or it may form an extension of the mill casing. The port d may be formed in, and the passage e outside of, the front wall of the classifier. Specifications 116,583, 152,724, and 154,434 are referred to.
Patent GB-798565-A (GB)
Title: Improvements in the production of aqueous dispersions of ethylene polymers
IPC: C08F10/00
Filed: 1956-08-15
Abstract: Ethylene polymers are made by polymerizing ethylene alone or admixed with one or more ethylenically unsaturated monomers soluble in water to 10 per cent, in aqueous emulsion and in the presence of a catalyst mixture comprising an azo compound and a water-soluble persulphate. The polymerization is effected at a temperature at which the azo compound decomposes and the process may be carried out continuously or batchwise.  The other monomer may be methyl, ethyl, or butyl acrylate, vinyl propionate, vinyl caprolactam, vinyl chloride, vinylidene chloride, diethyl maleate, or mixtures.  Suitable azo compounds are alpha, alpha1 - azo - bis - isobutyronitrile, alpha, alpha1 - azo - bis - alpha, gamma - dimethylvaleronitrile, alpha, alpha1-azo-bis-cyclohexanecarbonitrile, alpha, alpha1 - azo - bis - alphamethyl - gamma - diethyl - aminobutyronitrile, alpha, alpha - azo - bis - alpha - methyl - delta-piperidino - valeronitrile, alpha, alpha1 - azo-bis - alpha - methyl - gamma - ethoxy - butyronitrile, and the methyl, ethyl, or butyl esters of alpha, alpha1 - azo - bis - isobutyric acid.  The persulphates may be of sodium, potassium, ammonium, or magnesium. Emulsifiers mentioned are the alkali metal salts of isopropyl naphthalene sulphonic acid, sulphonated castor oil, or aliphatic sulphonic or carboxylic acids or soaps such as sodium or potassium palmitate, stearate, or oleate.
Patent GB-1502837-A (GB)
Title: Terminal for threaded post
IPC: H01R11/28
Filed: 1975-06-11
Abstract: 1502837 Two-part couplings; terminals AMP Inc 11 June 1975 [9 July 1974] 24947/75 Heading H2E An electrical terminal 24 for engagement with an externally threaded post comprises a socket 19 with an open seam allowing resilient expansion and steps 26 formed on the inner surface of the ferrule opposite the seam. The terminal may be readily pressed on to a threaded post of appropriate size but is difficult to withdraw without unscrewing, due to the steps being formed with free faces 25 directed rearwardly to engage the threads. A lead is crimped within the arms 27 the tang on the floor of this portion aiding retention of the lead. The terminal shown is suitable for connection of an ignition lead to a sparking plug suppressor cap. The crimping portion may engage insulation and conductor of the lead.
Patent GB-760914-A (GB)
Title: Process for the catalytic conversion of gases containing carbon monoxide
IPC: C07C1/04
Filed: 1952-10-06
Abstract: Carbon monoxide-containing gas is treated with steam to oxidize catalytically part of the carbon monoxide, and the whole of the gas mixture obtained is contacted with a hydrogenation catalyst, e.g. iron or cobalt, at substantially the same pressure as that used for the oxidation and at a temperature yielding hydrocarbons and/or oxygenated derivatives.  Pressures are preferably above 5 kg./sq. cm. The oxidation may be effected at 200-300 and the hydrogenation at 300-350 DEG  C., although lower temperature of 170-300 DEG  C. are effective with some synthesis catalysts.  The two catalysts may be superposed or arranged side by side in the same reactor.  Fluidized catalysts may be used.  The same or independent cooling systems may be employed for the two zones. Two or more synthesis stages or gas recycling can be used.
Patent GB-387029-A (GB)
Title: Improvements in tables
IPC: A47B3/12
Filed: 1931-09-07
Abstract: 387,029. Tables. FREEDLAND, I., Earlston House, Upper Park Road, Broughton Park, Manchester. Sept. 7, 1931, No. 25033. [Class 52 (iii).] A dismountable table comprises one or more cross stays C detachably connected to the end members A, which are con. nected to the top B by angleirons b, and screws and bolts. The stays C are secured by cotters c<1>, or by angle-iron joints like that shown, and two stays C may be inclined to each other to form a book trough. The table may have two hinged end leaves and a cupboard formed beneath the table-top by parts which replace the stays C, and by two front doors.
Patent GB-285105-A (GB)
Title: Improvements relating to shoes for personal wear
IPC: A43C11/00
Filed: 1926-10-08
Abstract: 285,105. Taylor, J. M., and McLaren, R. Oct. 8, 1926. Fastening. - To improve the fit of a shoe round the ankle, it is provided with straps 4, Fig. 3, sewn at 4<a> to the back of the shoe. and passing between the lining and upper to the front opening, where their front ends, which are eyeletted, pass through slits in the lining and ara engaged by the shoe lace. A single strap at one side only of the shoe may be used, or a single strap passing round the shoe and sewn at its centre to the back of the shoe. In a modification, Fig. 5, the front ends of the straps pass through slits in the upper to the ouside of the shoe, being engaged by the shoe lace, or being secured together by a buckle; guide bands 10 may be provided. To avoid any ridge due to the straps, the shoe is fitted with a filling strip or strips 11 of leather applied to the inside of the shoe below the strap 4.
Patent GB-481536-A (GB)
Title: Improvements in or relating to rock drills and like tools
IPC: B25D17/08
Filed: 1936-09-14
Abstract: 481,536. Percussive drill steel retainer. HOLMAN, A. T., HOLMAN, P. M., COCK, B., and HOLMAN BROS., Ltd. Sept. 14, 1936. No. 25077. [Class 124] The tool-retaining stirrup 6 is pivoted on bolts 9 which are supported by retaining springs 12 and buffer springs 14, the latter being enclosed in cylindrical recesses 11. Lugs 15 on the drill body hold the retainer in its operative position. Specification 330,316, [Class 124], is referred to.
Patent GB-302971-A (GB)
Title: Improvements in weather blinds
IPC: E04F10/10
Filed: 1927-09-23
Abstract: 302,971. Boaz, P. J. Sept. 23, 1927. Lath blinds.-A. sun-blind of the awning type consists of a number of overlapping metal slats 1 attached at each end.to a chain or metal band 2 which passes over a sprocket wheel 3 on the usual roller 4. Intermediate chains &c. may be provided. According to the Provisional Specification, the slats are pivotally mounted upon the chains.
Patent GB-241544-A (GB)
Title: Improvements in and relating to methods and apparatus for making elongated articles of vitreous silica, such as tubes and rods
IPC: C03B23/047
Filed: 1925-10-08
Abstract: 241,544. British Thomson-Houston Co., Ltd., (Assignees of Niedergesass, B. F.). Oct. 20, 1924, [Convention date]. Forming silica - glass articles.-A method of forming rods, tubes, or other elongated articles of silica consists in feeding a slug of vitreous silica into a heating zone at a constant rate, and in drawing the silica as it becomes plastic. Fig. 1 shows a machine for drawing a rod 13 from a slug or blank 12 of clear fused quartz which has been prepared by fusion in a vacuum. The slug is mounted in a chuck 15 and is rotated on its axis. At the same time, it is fed forwards into a heater consisting of a casing 40, of refractory material, into which a number of burners 41 project. The motor 16 which rotates the chuck also drives two shafts 44, 45. The holder 46 for gripping and drawing the rod 13 is carried by a platform 14 which is moved upwards by pinions 63 driven by the shaft 44. A friction gear 66, 67 enables the speed of the platform or its direction to be varied in relation to the movement of the slug 12. The holder 46 is rotated by the shaft 45, the speed of rotation being the same as that of the slug. When tubing is to be made, a tubular slug is used and air is fed to the interior of the slug through a tube 31.