baber/WOPTO huggingface dataset:
Patent GB-464502-A (GB)
Title: Atmospheric pressure de-equalizer or mechanical balloon for use in giving buoyancy and lateral propulsion to air and under-water vehicles
IPC: B64C23/00
Filed: 1935-07-16
Abstract: 464,502. Propelling aircraft and ships. QUAST, O. K. July 16,1935, No. 20251. Void. Convention date, March 2. [Class 4] A propelling device for air and underwater craft comprises a casing having circular sides g joined by a lower, semicircular, peripheral portion f having a variable orifice l, the upper space between the sides, when the invention is applied to aircraft, being open to atmosphere, and a member having radial blades c being rotatably mounted centrally in the casing with the sides of the blades in close proximity to the inner faces of the sides g of the casing. As shown in Fig. 2, the blades c extend between discs e secured to a hub b fixed to the driving- shaft a, and the orifice l is varied by means of a sliding shutter k to control the speed of the craft when moving vertically. In a modification, the vanes are secured on either side of a single disc centrally secured on the hub
Patent GB-1158352-A (GB)
Title: Electrical Circuit Interrupters.
Inventor: LOGAN ROBERT JAMES
IPC: H01H9/34
Filed: 1967-05-02
Abstract: 1,158,352. Arc-rupturing in switches. BALDWIN & FRANCIS (HOLDINGS) Ltd. 6 June. 1968 [2 May, 1967], No. 20299/67. Heading H1N. An air-break circuit interrupter has the or each pair of contacts 5, 9, the respective arc runners 20, 19, and the respective arc-chute 15 located within a casing 10 which is totally enclosed except for exhaust outlets 11, 12, located adjacent the outer metal arc splitter plates of the arc-chute 15 and out of alignment with the path of the arcs through the arcchute. Any arcing products which try to escape through the outlets 11, 12, arc de-ionized by metal grids 13, 14, although the effective crosssectional area A of the outlets is such as to retain substantially all the arcing products within the casing 10 without the pressure therein increasing appreciably above atmospheric pressure. The contactor described is identical to that of Specification 1,158,351, and comprises three identical double-break switching units, one for each phase, under the control of a common operating mechanism. A vertically slidable shutter 6 surrounds the movable contact carrying bar 4 to help enclose casing 10 and each pair of contacts 5, 9. A formula is given for the area A, relating energy and duration of the arc and volume of casing 10.
Patent GB-1504308-A (GB)
Title: Solvent extraction
IPC: C10G21/12
Filed: 1975-05-14
Abstract: 1504308 Solvent extraction BRITISH PETROLEUM CO Ltd 22 April 1976 [14 May 1975] 20319/75 Heading C5E [Also in Division C2] A solvent for the extraction of aromatics from hydrocarbons boiling above the boiling point of furfural (e.g. petroleum lubricating oil fractions boiling in the range 350-650 F.) compnses furfural together with 0À001-5 wt. per cent of a N,N-di(C 1 -C 5 )alkyl aniline such as N,N-diethylaniline and N,N-dimethylaniline. The furfuraldialkylaniline mixture can also contain 1-1000 p.p.m. of triethanolamine. Oil 2 is extracted in a tower 1 to produce a raffinate 5 and an extract 4. The raffinate is subjected to flash distillation at 15 and a vacuum distillation with steam stripping at 16. The extract is passed through flash towers 7 and 8 and a vacuum tower 9 with steam stripping. Water phase 13 is separated from the overheads from the towers 7, 8, 9, 15 and 16 and the dry furfural 3 is recycled to the tower 1. Make up dialkylaniline is added at 19; diethanolamine can be added at 20 but remains with the extract 11.
Patent GB-201578-A (GB)
Title: Improvements in steering gear for vehicles
IPC: B62D5/06
Filed: 1919-08-19
Abstract: 201,578. Clark, H. C., and Huddart, A. H. Aug. 19, 1919. Hydraulic transmission.- Hydraulic steering-gear comprises a fixed cylinder a, a hollow ram b connected to the lever c to be operated, and a hand-controlled valve d inside the ram. A piston e is formed on the ram. Fluid is supplied by a pump n to a pressure-chamber o communicating through ports p with the interior of the ram. An exhaust chamber k is in connection with the valve through a central passage i in the latter. When the valve d is moved to the right ports f, g, in the ram are opened to pressure and exhaust respectively, and the ram is thereby forced also to the right, following the valve until the latter stops and the ports are again covered. The fluid works in a closed circuit, the chamber k being connected by a pipe l to a tank m supplying the pump n. The pump is of variable-stroke driven from the engine, and its stroke is automatically governed by a pressure-operated device comprising a piston q controlled by a spring s.
Patent GB-1317025-A (GB)
Title: Method for producing tablets by direct compression
IPC: A61K9/26
Filed: 1970-04-28
Abstract: 1317025 Tablets SUCREST CORP 28 April 1970 [29 April 1969] 20394/70 Heading A2B [Also in Division A5] Colouring, flavouring, sweetening confectionary and like tablets are prepared by a process comprising mixing together a hydratable polymer, water and a water-soluble or water-dispersable, edible diluent and removing sufficient water so that there remains a matrix of hydrated polymer in which is dispersed the carrier as fine particles. The vehicle may be mixed with active material and, optionally, a lubricant, and formed directly into tablets by compression. Suitable polymers are starch, agar, locust bean gum, carrageen, dextrin and cereal flour. The diluent is preferably a mono- or di-saccharide but may also be a polyol of the formula HOCH 2 (CHOH) x CH 2 OH where X is an integer from 1-4 or an edible inorganic salt, e.g. sodium citrate or chloride, calcium carbonate, sulphate or phosphate.
Patent GB-860173-A (GB)
Title: Improvements in and relating to the cooling of hot viscous liquids
Inventor: CRESPIN GEORGE THEODORE FLOR
IPC: F28D11/08
Filed: 1959-06-15
Abstract: 860,173. Film type coolers for liquids. SHELL RESEARCH Ltd. June 15, 1959, No. 20412/59. Class 64(3) A continuous process for cooling a hot viscous liquid comprises maintaining a pool of the liquid in the space 7 immediately above two internally cooled rolls 8, 9 rotating away from each other (when viewed from above) and in surface contact, maintained e.g. by spring pressure, such that there is substantially no clearance between said rolls, carrying the liquid in the form of a layer of regulated thickness adhering to the surface of the rolls, to the space 12 immediately below the rolls and removing cooled viscous liquid falling under gravity therefrom. In the apparatus shown for carrying out the process, hot liquid resin flows from a storage or reactor vessel 5 through a line 6 to the pool, and the thickness of the resin layer being carried around the rolls is regulated by two adjustable spreader blades 13, 14 which serve also to contain the liquid in the pool. Cooled resin still in liquid form, collects at the space 12 below the rolls and falls therefrom on a "sheet" of liquid into a storage tank 17. The cooling effect of the rolls may be controlled by regulating the quantity and temperature of cooling liquid passed therethrough. The coolant may comprise water, ammonia, brine or oil.
Patent GB-929488-A (GB)
Title: Improvements in or relating to electrical pulse generators
IPC: H03K7/06
Filed: 1958-06-25
Abstract: 929,488. Valve pulse generating circuits. GENERAL PRECISION SYSTEMS Ltd. June 25, 1959 [June 25, 1958], No. 20459/58. Classes 40 (5) and 40 (6). A pulse generator comprises a D.C. amplifier connected as an integrator with a by-pass circuit connected across the feed-back capacitor and having a switch in the by-pass circuit to discharge the capacitor, pulse transmitting means connected in the integrator output circuit and arranged to be triggered by the integrator output, and a relay which closes the switch each time the pulse is delivered to discharge the capacitor and reduce the integrator output voltage. The pulse repetition frequency of the output signal is proportional to the level of the signal applied to the input of the D.C. amplifier. The output from the D.C. amplifier (not shown) is connected to the junction of resistors R2, R3 and the amplifier feed-back capacitor 19 is shunted by resistor 18 and contacts 16 of a relay 15 in the anode circuit of a gas discharge tube 14. When the output potential of the D.C. amplifier rises sufficiently to trigger the tube 14, the relay 15 operates. Contact 16 closes to discharge capacitor 19 thus reducing the potential at the trigger, and contacts 26 open to extinguish the tube, release of the relay being delayed by shunt capacitors 27. A third set of contacts 21 on relay 15 close to energize a second relay 20 which is held in by self-hold contacts 32, a second set of contacts 33 connected across resistor 34 opening to reduce the current to its holding value. Release of this relay is delayed until the charge on capacitor 37 builds up sufficiently to the tube 35 to strike, and reduce the potential across relay 20 sufficiently for it to release. Further contacts sets 40, 41 on relay 20 provide output pulses which may be used to operate counters.
Patent GB-976255-A (GB)
Title: Improvements relating to the manufacture of brushes
IPC: B29C45/26
Filed: 1962-05-28
Abstract: 976,255. Moulding brushes, combs &c. E. DENT, and J. VALLIS, [trading as VALDEN CO.]. May 28, 1962 [April 17, 1962], No. 20463/62. Heading B5A. Brushes, combs &c. are injection moulded in a mould having a series of grooved die plates which co-operate during the moulding operation to define closed bristle forming cavities, but which may be subsequently separated to facilitate easy removal of the moulded bristles therefrom. In an embodiment shown in Fig. 1 the mould comprises a base member 19, side walls 18 and a stack of die plates 10 each having a uniformly thick portion, a tapered portion, and bristle forming grooves 11. Prior to moulding the untapered ends of the die plates are clamped together by bolts 13, 13a passing through holes 10d, whilst the upper ends of the plates are separated by a gap 12 by virtue of their taper. During the moulding a member 22 is lowered so as to deform the plates in the direction indicated by the arrows 23, this forcing the plates together to form closed mould cavities. Upon removal of the member 22 the plates elastically reassume their original open position thus facilitating easy removal of the brush from the mould. In a modification, Fig. 6 (not shown), the die plates may be deformed by the side walls of the mould which are adapted to be movable. In a further modification as in Fig. 7 the die plates 410 are unstrained during the moulding operation and are subsequently strained to an open position by pressure from the curved member 423.
Patent GB-722561-A (GB)
Title: Improvements in feed hoppers
Inventor: CLARK PETER
IPC: B65D88/72
Filed: 1952-08-14
Abstract: 722,561. Unloading material from storage chambers by fluidization. EONIT ENGINEERING CO., Ltd. Aug. 12, 1953 [Aug. 14, 1952], No. 20482/52. Classes 78 (1) and 78 (4). In a shallow hopper 1, Fig. 1, for cement and other finely-ground materials provided with a bottom inclined at an angle of about seven degrees to the horizontal towards an outlet 3, the bottom is composed of four panels 4, Fig. 2, each of which comprises a steel plate 4 and supports a. canvas or like flexible porous diaphragm 7, Fig. 6. Each plate has holes 11 through which low-pressure air is supplied to the space below the canvas to aerate the cement and facilitate its flow to the outlet. The canvas is stretched over a wire frame 5 to which wire mesh 6 is secured.
Patent GB-1085835-A (GB)
Title: Improvements in or relating to apparatus for cutting stone or the like
IPC: B28D1/06
Filed: 1963-05-23
Abstract: 1,085,835. Sawing stone. J. SANDERSON and F. L. ROSENDALE. May 8, 1964 [May 23, 1963], No. 20577/63. Heading B5L. Apparatus for cutting stone and the like comprises means 15 for carrying a plurality of blades 16 in cutting relation to a block 17 to be cut, means 19 . . . 25 for reciprocating the blades, and means for moving the blades and block relative to each other as the block is cut. The means 15 consists of a rectangular frame supporting the plurality of blades 16 which may have diamond inserts 16a in their cutting edges. The frame is formed with upstanding brackets 14 securely retaining rods 13 slidable in bearing 12 longitudinally adjustable on a pair of beams 14. The ends of the beams are provided with saddles 6 in screw-threaded engagement with vertical screws 5 which are supported in uprights 3 and connected by bevel gearing and a shaft 9 to reduction gearing 11 and a variable geared electric motor 10. The frame 15 is reciprocated in the bearings 12 by a connecting rod 21 connected to a crank 22 belt-driven by an electric motor 25. In operation, the block to be cut is positioned by means of a bogie 26 beneath the saw blades 16, and the bearings 12 are adjusted on the beams 4 to be within the dimensions of the block. The saws are then reciprocated by the crank mechanism at the same time as they are fed downwardly by the drive from the motor 10 to the beams 4. During cutting water is fed to the blades through perforated pipes disposed above the blades. In an alternative embodiment, the block is raised relative to the blades. The relative movement between the block and blades may be effected by hydraulic or other mechanical means.
Patent GB-148857-A (GB)
Title: Improvements in and relating to chill-moulds for the casting of metals and alloys
IPC: B22C9/06
Filed: 1920-07-10
Abstract: 148,857. Mansfeld'sche Kupferschiefer Bauende Gewerkechaft. Jan. 18, 1918, [Convention date]. Moulds.-The vertical walls a, b of a chillmould have a projection c<1>, d<1> determining the thickness of the cavity e, on both sides so that they can be reversed. The walls rest on a flat base-plate, which may have a rib to enter the bottom of the cavity e, and are clamped by stirrups and bolts.
Patent GB-842407-A (GB)
Title: Device for mooring a boat or vessel
IPC: B63B21/04
Filed: 1958-06-27
Abstract: 842,407. Mooring shackles. WHITE, E. J. N. Sept. 12, 1958 [June 27, 1958], No. 20620/58. Classes 24 and 44. The shackle is secured at b to an anchorage and the mooring rope of a boat is passed through ring B so that the tension of the rope causes member A to pivot at a to clamp the rope between the ring and the member.
Patent GB-206348-A (GB)
Abstract: 206,348. Royce, F. H., and Rolls- Royce, Ltd. Oct. 26, 1922. Rotary distributors; timing-devices. - In an ignition system for multicylinder engines of the type employing an induction coil, there being no trembler in the low tension circuit and the spark being caused by breaking this circuit, in order to enable the engine to be re-started in the correct direction after it has been stopped by switching off the ignition and not by throttling, the shape or shapes of the rotating contact blade of the high-tension distributor of the co-operating fixed contacts or of both fixed and movable contact members is such that on retarding the ignition, when a break occurs in the primary circuit the distributor contact blade is nearer the fixed contact it had passed than to the one it was approaching during normal running, so ensuring that cylinders on the explosion stroke are fired and at the same time preventing explosions in cylinders on the compression stroke which would cause back running. As applied to a sixcylinder engine, the blade e<2> secured to the halftime shaft c<2> in a spark-pump distributor is provided with a trailing extension e<4> extending for 30‹. Assuming the periods of make and break of the primary to be equal and the engine to have stopped with two cylinders at equal distances from their topmost positions, both being full of unigited gas, if the timing lever is first advanced, the ignition circuit closed and the timing lever smartly retarded, a break of the primary circuit occurs when the lever e<2> is midwav between the fixed contacts g<1> connected to the cylinders in question. The extension e<4>, however, ensures that a spark passes only in the cylinder on its explosion stroke, so initiating each rotation in the correct direction. In an alternative form of distributor the fixed contacts g<1> may be constructed with forward-projections for the same purpose.
Patent GB-879257-A (GB)
Title: Apparatus for controlling temperature in fluid heating systems
Inventor: DAVIDSON DAVID MCBRIDE JOHNSTO
IPC: G05D23/185
Filed: 1957-07-01
Abstract: 879,257. Fluid-pressure servomotor-control systems. MIDLAND INDUSTRIES Ltd. June 2, 1958 [July 1, 1957; Nov. 30, 1957], Nos. 20735/57 and 37384/57. Class 135. Apparatus for controlling temperature in a heating system 33 supplied with hot fluid at 39 has the fluid controlled by a valve 14 actuated by a bellows 17, fluid from the inlet 11 passing through an orifice 15 in the valve to the inside of the bellows, through a pilot valve 19 actuated by a piston, diaphragm or bellows 20 and through a conduit 22 controlled by a ball valve 28 actuated by a corrugated bimetal element 34 and thence by a conduit 27 to the outlet side of the valve. On the temperature in the sterilizer 33 reaching a certain value the thermal element pushes the ball 28 on its seat 30 and pressure is built up outside the bellows 20 to close pilot valve 19 so that pressure builds up within bellows 17 and closes valve 14. On opening lid 40 of the sterilizer an arm 42 depresses a rod 41 which forces the ball valve on a seat 31 to close valve 14. Specifications 734,832 and 768,720 are referred to.
Patent GB-744547-A (GB)
Title: Improvements in or relating to aerosols
IPC: A01M13/00
Filed: 1953-07-27
Abstract: 744,547. Aerosols. HURST, H. July 27, 1954 [July 27, 1953; July 30, 1953], Nos. 20768/53 and 21158/53. Class 81(1). In a method for the thermal production of an aerosol of an insecticide, bactericide or like active material, a solution or dispersion of the active material in a more volatile liquid is caused to impinge onto a surface, heated to a temperature above the boiling point of the vehicle, of an enclosed chamber having one or more outlets for the aerosol. The cross section of the heating chamber may be restricted so that the outlet or outlets or the chamber itself are periodically blocked by droplets of liquid and the aerosol is ejected periodically in pulses. In one modification of the apparatus for carrying out the invention an aluminium container 10 is filled with a solution of pyrethrins in a mixture of methyl and ethyl alcohols which passes by gravity through a copper tube 15, sweated into a thicker horizontal copper tube 17 acting as a heating chamber within which is a bimetallic strip 20, which restricts the entry of insecticide into the chamber by means of a conical plug valve 21, and surrounded by a heating element 13. When the current is switched on the chamber is heated and the bimetallic strip 20 is deformed so that at a critical temperature the plug 21 moves downwards and insecticide descends into the heating chamber, where the volatile alcohol components vaporise and build up a pressure within the chamber so that the resultant aerosol is emitted in a series of puffs through an orifice or nozzle 22 at the end of the chamber. When the heating current is switched off the plug 21 gradually closes and restricts the flow of insecticides.
Patent GB-571961-A (GB)
Title: Improvements in or relating to the dyeing of films possessing low water imbibition
IPC: D06P3/60
Filed: 1943-12-13
Abstract: Films of water-insoluble organic derivatives of cellulose or of water-insoluble resinous polymerisation products are dyed in a jig dyeing machine by association, throughout their lengths, with fabric capable of taking up the dye liquor.  In the examples, a film made from cellulose acetate, dimethyl phthalate and triphenyl phosphate is jig-dyed between two lengths of cotton fabric in an aqueous bath containing turkey red oil, sodium hexametaphosphate and Duranol violet or a mixture of Dispersol fast yellow and Duranol red.  Dyeing is preferably conducted at 65 DEG  to 70 DEG  C. and the film immediately dried at 80 DEG  to 110 DEG  C. Films made from cellulose propionate, butyrate, acetate-butyrate or acetate-propionate, ethyl cellulose acetate, ethyl or benzyl cellulose, polymerized vinyl acetate, polyvinyl chloracetate or polymerised alkyl substituted acrylic esters such as polymerised methyl methacrylate, with or without the addition of plasticising or softening agents such as dimethyl, diethyl, dimethoxyethyl or dibutyl phthalate, methyl or ethyl phthalyl-ethyl glycollate, dimethyl or diethyl tartrate, triphenyl or tricresyl phosphate, di- or tri-acetin or trichlorethyl phosphate are also specified.  In addition to cotton, viscose rayon fabric is also specified as being suitable for association with the film.
Patent GB-1506800-A (GB)
Title: Heat-exchanger and a method of heat exchange
IPC: F28F13/00
Filed: 1976-05-20
Abstract: 1506800 Maintaining uniformity of the bed G A PIEPER 20 May 1976 [20 May 1975] 20854/76 Heading B1F [Also in Division F4] In a heat exchanger of the kind comprising a plurality of vertically disposed tubes 2 extending between inlet and outlet chambers 6 and 5 and containing particulate material 4 maintained in a fluidized state by liquid medium flowing upwardly through said tubes, particles enlarged by material precipitated from the liquid medium are periodically removed by temporarily increasing the liquid flow rate through the tubes, whereby said. particles are flushed upwardly into the outlet chamber 5 wherein the enlarged particles separate from the remainder by gravity and are removed from adjacent the bottom of the chamber through one or more closable outlets 17. Make-up particles are introduced into said chamber 5 through a supply conduit 18 and the liquid flow rate reduced to readmit the particles into the tubes and maintain them in a fluidized state. As shown the increase in liquid flow rate through the tubes is achieved by closing valves 10 and 15 in the supply and discharge lines 8 and 14 respectively and circulating the liquid in the heat exchanger through a closed circuit including a by pass 13 incorporating valves 12 and 16 and a pump 21 which augments pump 9 in the supply line 8. In an alternative arrangement (not shown) the bypass 13 is omitted and particulate material of two different types is used, of which, in the fluidized state, only the type forming the upper layer is subjected to enlargement due to precipitation from the liquid; a small increase in the rate of liquid flow is then sufficient to transport these particles into the outlet chamber 5 for removal. The liquid medium, which enters the lower ends of the tubes 1 through narrow openings 7, takes up heat from a second medium flowing crosswise through separate compartments 1. The side walls of .the chamber 5 may include convergent and/or divergent portions.
Patent GB-445852-A (GB)
Title: Improvements in and relating to the manufacture of engine, hydraulic and other packings
IPC: B29C48/475
Filed: 1934-07-17
Abstract: 445,852. Stuffing - box packing. HALL, F. R., 35, Victoria Road, Falling Park, Wolverhampton, and HOMOGENE PERMANENT PACKING, Ltd., Great West Road, Hounslow West, Middlesex. July 17, 1934, No. 20890. [Class 122 (v)] [See also Group V] Engine &c. packings are manufactured from compounds of materials, e.g. asbestos, flax, cotton, duck, &c. mixed with rubber, whitening barytes, sulphur, zinc, litharge and suitable accelerators, which are comminuted, compressed into billets, passed through an extrusion press and vulcanized. Where endless packings are required the material is vulcanized in moulds. A steam heated chamber h<1> is provided in the press for reception of the compressed billets prior to extrusion through the die f. The latter may be in two parts l, m, Fig. 6, provided with helical passages l<1>, m<1> to form helical packing which is supported after extrusion on a mandrel l<2>.