baber/WOPTO huggingface dataset:
Patent GB-351976-A (GB)
Title: Improved method of and apparatus for drying materials
IPC: A23F3/08
Filed: 1929-12-24
Abstract: 351,976. Withering tea etc.; bascules. LLOYD, L. N., Red Gables, Elgood Avenue, Northwood, Middlesex, and PHILLIPS ENGINEERING CO., Ltd., Evelyn Road, Sparkhill, Birmingham. Dec. 24, 1929, No. 39472. [Class 34 (ii).] Apparatus for drying materials, including withering tea, comprises a drying chamber through which the drying medium is passed with automatic periodic reversal of direction by the operation of a single valve, means also being provided whereby drying medium exhausted from the chamber may be mixed with fresh medium and recirculated. Atmospheric air is drawn in through adjustable louvres 18 into a mixing chamber 1 and heating chamber 2 by a fan 5 and passed to a butterfly-valve 4 directing it through a side-duct to the drying-chamber (not shown), whence it returns by another duct to the other side of the valve 4 being then drawn through a duct 7 by another fan 8 and passed to an underground conduit 9. By means of a flap valve 10, which may be connected to the louvres 18, part of the exhaust air is passed to atmosphere, and part to the mixing chamber 1, this part being divided into a plurality of streams by an arrangement of vanes in order to facilitate mixing. Valves controlling the proportions of exhaust and fresh air may be automatically operated by means depending on the temperature and humidity of the constituents. To ensure uniform distribution. flow and collection, the air entering and leaving the drying chamber is divided into separate streams of equal volume by guide vanes such as 13, 14, Fig. 6, other vanes being provided in planes at right-angles. The heater 2 may comprise steam tubes, or an electric radiator, under control of a thermostat. The valve 4 may be hydraulically operated from a shaft 23 by the means shown in Fig. 9. An automatic flushing cistern 29 periodically fills the upper of two tanks 20 connected by a chain 21 over a pulley 22. Each tank is emptied at the bottom of its fall by a poppet valve 27 operated by a stop 28, and the oscillating feed tube 30 is carried over the ascending tank by a cam 32 on the shaft 23, or by means on the ascending tank.
Patent GB-833688-A (GB)
Title: Improvements in and relating to electrical contact rectifiers
IPC: H01L25/07
Filed: 1956-12-28
Abstract: 833,688. Sealed plate rectifiers. GENERAL ELECTRIC CO. Dec. 28, 1956 [Dec. 30, 1955], No. 39480/56. Class 37. A method of potting a selenium rectifying cell in an organic casting material comprises the step of first coating the cell with a thin film of a silicone polymer. It is stated that this enables the cell when potted to retain the well known self-healing properties of unpotted cells. As shown, a rectifier is made by applying a layer of selenium on an aluminium baseplate and then spraying the selenium with a counter electrode material. The cells are stacked in the manner indicated in Fig. 2 with washers contacting the counter electrodes and with terminals 7 projecting from the stack along one side. The stack is then dipped into a silicone oil in emulsified form after which it is air dried for 30 minutes and then baked for 30 minutes at 100‹ C. The stack is then placed in a mould and this arrangement is then heated to 100‹ C. for not more than 2 hours. A prepared, suitable resin is poured into the mould at this stage. This resin which may be a polyester or an epoxy resin is prepared by first mixing with a filler material such that its temperature coefficient of expansion will be comparable with that of the cell. The filler may be silica flour, clay, talc, or certain carbonates. An anti-foaming agent is added to the mixture which is then heated to about 60‹ C. and de-aerated under vacuum. An amine or anhydride hardener is then added in the case of epoxy resins and a catalyst in the case of polyester resins and the mixture is again heated this time to about 55‹ C. It is now suitable for casting in the mould. The stack and moulded resin are then cured by heating for 2 hours at 100‹ C. and 4 hours at 80‹ C. after which time the potted rectifier may be removed from the mould. The invention is equally applicable to copper oxide rectifiers. The completed rectifier may be attached to mounting brackets.
Patent GB-1400545-A (GB)
Title: Process for separating polynuclear aromatic compounds from  petroleum fractions
IPC: C10G25/00
Filed: 1972-08-25
Abstract: 1400545 Purifying hydrocarbons by adsorption BRITISH PETROLEUM CO Ltd 28 Aug 1973 [25 Aug 1972] 39645/72 Addition to 1334226 Heading C5E Polynuclear aromatic compounds are removed from gasoline or from catalytic reformate by contact, e.g. at 20-50‹ C., with adsorbent pellets comprising a vacuum or gas ground graphite having a B.E.T. surface area of 50 to 200 m.<SP>2</SP>/gm. and a finely divided alumina binder. In examples benzo alpha pyrene is removed from motor gasoline and from catalytic reformate and the graphite/alumina pellets are regenerated by washing with hot toluene.
Patent GB-1404227-A (GB)
Title: Hydrostatic load cell
IPC: G01G5/00
Filed: 1972-08-26
Abstract: 1404227 Load cell D EYRE 26 Nov 1973 [26 Aug 1972 23 Aug 1973] 39885/72 and 40098/73 Heading G1W A hydrostatic load cell comprises a piston 25, a cylinder 26, a liquid filled bag 29 situated therebetween, and a pressure member 40 pivotally connected to the piston for applying the load to the piston, the piston being able to tilt to a limited extent within the cylinder. The piston may be of annular Fig. 3 and Fig. 6 (not shown) or circular Fig. 7 and Fig. 8 (not shown) crosssection, and is sealed to the cylinder by means of land or lands 42 which are of a sufficiently short axial length and have a sufficient clearance with the cylinder to permit the piston to tilt to the limited extent. The pressure member may be pivoted to the piston by means of a single pin 34 Fig. 3 within the piston or a pair of pins (Fig. 8) mounted outside the cylinder, and the axis of pivoting is arranged to be in or below the plane 36 of the lands 42. Alternatively the end of the pressure member may co-operate with a recess in the piston to form a ball and socket joint (Fig. 6) and Fig. 7, and the centre of pressure 53 in the joint is arranged to be in or below the plane 36 of lands 42. The load cell may be mounted on a base, and a load platform may be pivoted to the base and rest on the pressure member Fig. 1 (not shown).
Patent GB-1022436-A (GB)
Title: Process for the production of fine-grain and equi-axial crystallisation ingots
Inventor: DEVILLARD JACQUES
IPC: B22D23/06
Filed: 1964-10-02
Abstract: 1,022,436. Casting processes. COMMISSARIAT A L'ENERGIE ATOMIQUE. Oct. 2, 1964 [Oct. 10, 1963; Aug. 27, 1964], No. 40287/64. Heading B3F. Ingots, e.g. of uranium carbide, with equiaxial crystallization and fine grains are made by melting and casting granules of the material concerned which are less than 1 mm. in diameter and have been made by melting and solidification. The granules 12 are melted in an electron beam furnace 1 and the continuous casting mould assembly is rotated by drive 22 through gears 18, 20, Fig. 1 (not shown).
Patent GB-1438287-A (GB)
Title: Mechanical conveyor systems
IPC: B61B10/02
Filed: 1972-08-31
Abstract: 1438287 Conveyer systems PRESSED STEEL FISHER Ltd 28 Aug 1973 [31 Aug 1972] 40380/72 Heading B7L A mechanical conveyer system comprises a drive dog 14 of a sequence of such dogs carried by wheeled trolleys 13 joined by chain links passing along a first track 11 to engage and thereafter drive a wheeled sling trolley 16 along a second track 12 formed by opposed inwardly facing channel section members and juxtaposed with and vertically beneath the first track 11, a switchable section 17 pivotally attached to the second track 12 by a hinge 18 and switching means in the form of a compressed air operated cylinder 21 connected to a cam wedge 20 cooperating with a lift arm 19 pivoted to the section 17, so that the section 17 may be moved from an aligned position with the track 12 to the position shown in Fig. 1 or vice versa by admitting air to one or other end of the cylinder 21. A keeper plate is pivotally mounted at 23 on the section 17 and is movable from a horizontal inoperative position to the upward inclined position shown in Figs. 1 and 3 in which is retained by L-shaped arms 24 pivoted to the section 17 at 25a under the urge of springs 26. The arms 24 are operable to release the plate 22 by arms 30 pivoted by spindles 28 carried by the section 17 and having stub arms 27 secured thereon. The arms 30 are engageable in the raised position of the section 17 by a trolley dog 14 which can also then engage a sling trolley abutment 10. The arrangement of the switching means is such in response to a first signal from a remote control station the section 17 is displaced to the position shown in Fig. 1 so that a trolley 16 driven along the track 12 by a dog 14 is displaced out of engagement with that dog on to, or by, the section 17 and thereafter in response to a second signal from the or some other remote station, the section 17 is again aligned with the track 12 so that any trolley 16 displaced on to, or by the section 17 is restored for engagement with a dog 14 subsequently passing along the first track 11. When the section 17 is lowered the keep plate 22 is caused to rise and when the section 17 is aligned again with the track 12 the plate 22 remains raised until the arms 24 are released by an oncoming dog 14.
Patent GB-1175685-A (GB)
Title: Improvements in or relating to Induction Machines
Inventor: EASTHAM JOHN FREDERICK
IPC: H02K3/28
Filed: 1966-09-09
Abstract: 1,175,685. Change-pole induction motors. NATIONAL RESEARCH DEVELOPMENT CORP. 6 Sept., 1967 [9 Sept., 1966], No. 40483/66. Heading H2A. The present invention is a two-phase, e.g. split-phase, modification of the three-phase variable-speed induction motor described in Specification 1,033,084. The motor in that Specification employed the principle of" stretching " and " shrinking" the poles by the reversal of alternate coil-sets (referred to as " blocks ") as described in Specification 978,211 except that the voltage balance and harmonic content were improved by interleaving subblocks instead of by grading the blocks. The winding was constructed from an even number of blocks, each of which consisted of at least one sub-block and each sub-block was voltage balanced on at least one pole-number by adjustment of the phase band lengths. The sub-blocks were then interleaved into a block togive a complete or partial balance on the second pole-number. These blocks were then assembled into a complete winding, and alternate ones were reversible to obtain two speeds. Now, according to the present invention, the machine is adapted for two phase operation by forming each block of two sub-blocks each of which is approximately voltage-balanced on at least one pole number by adjustment of the phase-band lengths. The sub-blocks are interleaved to form a block, the degree of interleave being such that the block is balanced on the second pole number. The blocks are interleaved to form the complete winding. One of the phases may be used for starting only.
Patent GB-1107380-A (GB)
Title: Improvements in or relating to butterfly valves
Inventor: FELTON GEORGE AUBREY
IPC: F16K15/18
Filed: 1964-10-05
Abstract: 1,107,380. Valves. LOEWY ROBERTSON ENGINEERING CO. 7 Dec., 1965 [5 Oct., 1964], No. 40496/64. Heading F2V. A butterfly valve has a lost-motion connection with its actuating mechanism whereby it can also function as a check valve. As shown, the valve member has a pivotal axis along its diameter, the axis being parallel to, but spaced downstream from, the sealing edge of the valve member. A first stub shaft 15 carries a key 20 that co-operates with opposite ends 24a, 24b of a slot in a pinion driven via a worm by hand wheel 27. A second stub shaft (14, Fig. 5, not shown) carries a lever 25 having a weight 26 adjustably mounted thereon. The weight may be located on a bent outer part of the lever. To open the valve, the pinion is first rotated to bring end 24a of its slot into contact with key 20 and then rotated further to open the valve. When the valve is open, the weight 26 lies almost vertically above the axis. To allow the valve to act as a check valve, the pinion is now rotated to bring end 24b of the slot into contact with the key, whereby flow stoppage or reversal allows the weight to close the valve.
Patent GB-1525259-A (GB)
Title: Radio transmitter pressure and speed measuring writing pe
IPC: G06V10/12
Filed: 1975-10-03
Abstract: 1525259 Writing pen pressure transducers for determining stress R M SMITH 3 Oct 1975 40525/75 Heading G1N A ball point pen incorporates a pressure capsule and produces a frequency trace when writing a standard phrase or sentence. A reference trace is obtained under normal circumstances, when the writer is not under stress, and compared with subsequent frequency traces obtained under different conditions. The frequency signal is radio coupled to a receiver and recorded on a chart running at a known speed whereby the chart indicates both pressure and speed of writing.
Patent GB-1319837-A (GB)
Title: Vacuum moulding machine for webs of synthetic thermoplastic material
IPC: B29C51/22
Filed: 1970-08-24
Abstract: 1319837 Rotary vacuum moulds COMPAGNIA ITALIANA NEST-PACK SpA 24 Aug 1970 [25 Aug 1969] 40595/70 Heading B5A A moulding machine comprises a driven drum 1 with suction moulds 9 connected to a vacuum distributer 8, which receives a web 13 of thermoplastic, e.g. expanded material, from a drum 14 via a pre-heater 17, the formed mouldings 22 being cut from the web by an endless cutting band 48 disposed transversely to the web with its edge facing the direction of movement of the web. The web is moved by endless chains 24 having spikes (124), Figs. 5 and 6, not shown, which ensure that the sides of the webs are sealingly located in grooves (25) of the drum. In the moulding position, each mould 9 co-operates with a reciprocable plunger 26 driven by a fluid cylinder 28. The web with the formed mouldings is conveyed to a supporting conveyer and plate 42 below the cutter 48 and pressed into contact therewith by spring-loaded rollers (71), Fig. 8, not shown. The cutter 48 is adjustably disposed in a plane askew to a plane normal to the direction of movement of the web and its lower flight moves in guides (57), (58), Fig. 11, not shown, whilst its upper flight continuously contacts a sharpener 61. The waste portion 113 of the web passes to a shreading machine (79), Fig. 15, not shown, where it is passed to a heater (81) and then preferably to an extruder (82). The cut mouldings are passed by a shoot 83 to a stacking and packing device (86), (87). The waste web (113) can be moved to a reel (72), by the spiked chain 24, Fig. 13, not shown, or by spiked rollers (77), Fig. 14, not shown. The drum 1 can be fed directly from a foil extruder.
Patent GB-1523148-A (GB)
Title: Reactive polyurethane coatings
IPC: C08G18/08
Filed: 1975-10-06
Abstract: 1523148 Polyurethane coated substrates BAYER AG 6 Oct 1975 [9 Oct 1974] 40747/75 Heading B2E [Also in Divisions C3 and D1] Leather, split leather and textiles, e.g. roughened cotton, are coated with a reactant mixture which forms a polyurethane coating. Coating may be by spraying. The substrate may be initially coated with polyvinyl chloride or a polyurethane. Microporous coatings may be formed under suitable conditions.
Patent GB-1525819-A (GB)
Title: Microwave tunnel oven
IPC: H05B6/78
Filed: 1976-10-01
Abstract: 1525819 Microwave tunnel ovens N MEISEL I Oct 1976 [9 Oct 1975] 40772/76 Heading H5H A microwave tunnel oven comprises a microwave processing area capable of being opened from one side. The oven comprises a plurality of modules 12 arranged in series, each module having a thermally insulated cavity lined with a heatresistant non-toxic material e.g. PTFE or polypropylene 16 contained within a microwave cavity and at least substantially transparent to microwave radiation, means such as a conveyer belt 9 for advancing material 10 to be heated through the modules in series, an entrance and an exit shield (2, Fig. 1, not shown) at opposite ends of the oven to resist the escape of microwaves, at least one of the modules being a microwave module supported cantilever fashion (Fig. 2, not shown) and housing at least one magnetron 13 transmitting into a pair of horizontal wave-guides 11 mounted above and below the microwave cavity to extend transversely of the tunnel, and at least one antenna or slot 14 extending from each of the wave-guides through the microwave cavity wall with antennas or slots spaced lengthwise of the tunnel being separated from each other by a reflector (19, Fig. 7, not shown) and a mode stirrer (31), and a lateral side closure for the oven comprising a plurality of adjacent doors, 20, one for each module, and a protective flap 28 covering the juncture between each pair of doors, the doors and the flaps both comprising material for resisting the escape of microwaves. Hot or cold air or inert gas can be passed through the oven via ducts (5, 6).
Patent GB-987305-A (GB)
Title: Improvements relating to railways
IPC: B61J1/12
Filed: 1962-10-30
Abstract: 987,305. Transporting road vehicles by rail. J. R. HARDING. Oct. 10, 1963 [Oct. 30, 1962; Nov. 6, 1962], Nos. 40907/62 and 41875/62. Headings B7H and B7L. Bogies for carrying a road vehicle on railways each comprise one or more pairs of flanged wheels 13, rollers 17 for supporting the road vehicle wheels 20 directly or by means of a belt 18 as shown, and gearing 19 transmitting drive from the driven wheels of the road vehicle to at least one flanged wheel 13. Each bogie supports the road wheels on the axle or axles at one end of the vehicle only. Vertical rollers 21 disposed on the bogie between the road wheels 20 secure the road vehicle laterally. The rollers 17 are carried at each end of transverse shaft 16 adjustable longitudinally of the bogie to accommodate different road wheel sizes, and project through an opening 15 in a well formed in the bogie frame to receive the road wheels. The transmission gearing 19 is arranged such that the peripheral speeds of the road wheels 20 and the flanged wheels 13 are equal, and includes a clutch whereby the drive between the flanged wheels and the rollers supporting the non- driven wheels of the road vehicle may be disconnected. Couplings 22 enable the bogies to be connected together to form trains, and a ramp 24 facilitates the loading of road vehicles on to the bogies.
Patent GB-1163880-A (GB)
Title: Precipitation of Particulate Suspensions in Hydrocarbon Systems
IPC: C10L1/224
Filed: 1968-08-28
Abstract: 1,163,880. Liquid fuels. ARMOUR INDUSTRIAL CHEMICAL CO. 28 Aug., 1968 [28 Aug., 1967], No. 41131/68. Heading C5G. Gasoline, kerosene, jet fuel, diesel fuel or fuel oil contains a #-aliphaticaminopropionamide RNHCH 2 CH 2 CONH 2  wherein R is n - or sec-alkyl, n-alkenyl, n- or sec-alkyl or n-alkenyl -NH(CH 2 ) n -, in which the alkyl or alkenyl is C 6-22  and n is 2-4, to precipitate suspended particles. The additive is used in an amount 0À1-100 p.p.m. of the fuel.
Patent GB-1469505-A (GB)
Title: Testing of cigarettes
IPC: A24C5/34
Filed: 1974-05-06
Abstract: 1469505 Testing cigarettes MOLINS Ltd 6 May 1974 [8 May 1973] 41178/76 Divided out of 1469504 Heading A2C A cigarette testing device for the pneumatic testing of the wrappers of cigarettes comprises a rotary conveyor 30 for carrying the cigarettes 32 sideways through the testing station, and a belt 60 arranged to pass around the conveyor in the region of the testing station, the belt having seal portions which co-operate with parts on the conveyor to form a seal around the cigarette during testing, and having driving teeth which engage in recesses in the conveyor whereby the belt is driven by the conveyor. Specifications 1469504 and 1469506 are referred to.
Patent GB-1411500-A (GB)
Title: Preparation of a catalytic material
IPC: H01M4/90
Filed: 1973-09-03
Abstract: 1411500 Electrode compositions SEIMENS AG 3 Sept 1973 [12 Sept 1972 41285/73 Heading B1E [Also in Divisions C7 and H1] A silver or tungsten carbide catalyst for use as a component of an electrode is formed by depositing silver onto tungsten carbide particles by reduction of a silver salt so that the tungsten carbide particles upon which the silver is deposited are united to form particles having a larger particle size. The silver may be deposited by reduction of a silver salt, e.g. acetate, nitrate or fluoride, with an aqueous reducing agent, e.g. formaldehyde, hydrazine or hydroxylamine. Suitably, the initial carbide particles are of an average size less than 1 micron and the resulting particles of catalyst have an average particle size of 10 to 80 microns. The catalyst may contain 10-20% wt silver. The catalyst may be composited into an electrode by mixing with an organic binder and a pore former or porous additive, e.g. active carbon. In the example, the catalyst is deposited on an asbestos cloth and covered on the gas side by a carbon cloth. The electrolyte side of the asbestos is supported by a perforated sheet of tantalum.
Patent GB-932333-A (GB)
Title: Improvements relating to trolleys
Inventor: TOWNSEND CLAUDE MORTIMER
IPC: B60P3/07
Filed: 1961-11-18
Abstract: 932,333. Hand trucks. AUTOSET (PRODUCTION) Ltd. May 18, 1962 [Nov. 18, 1961], No. 41355/61. Class 108(1). A trolley for manipulating road vehicles comprises an angle-iron frame 11 having a plate 10 secured to it and being mounted for movement on castors 15. A removable bar 19 engages slots 18 to restrict movement of the vehicle wheel. The trolley may be in two parts hinged together across a transverse centre line.