baber/WOPTO huggingface dataset:
Patent GB-1087225-A (GB)
Title: Improvements in steering arrangements of invalid chalrs
IPC: A61G5/04
Filed: 1963-10-08
Abstract: 1,087,225. Power steering. MOLINS ORGANISATION Ltd., and G. C. LEIGH. Sept. 22, 1964 [Oct. 8, 1963], No. 39656/63. Heading B7H. A power steering system for an invalid chair comprises a pump 21 driven through a flexible cable 22 from an electric motor 23 operated by the vehicle battery 6, the pump having an output line 27 leading to a line 24 supplying one end of a power cylinder 19 and to a line 17 leading to a control valve 9 which is connected by a line 16 to the other end of the cylinder 19 and by a line 18 to the reservoir 20. In the mid position of the valve, Fig. 4, throttle apertures 29, 29A between the valve spool and control edges allow for a reduced pressure in the lines 17 and 24 and a small build-up of pressure in line 16, such that, these pressures acting upon the faces of the piston of unequal area, a dynamic balance is achieved. By moving the valve spool 8 to the left, the pressure will increase in line 17 to move the piston, and by moving the spool 8 to the right, the pressure in line 16 will increase, and, acting upon the piston face of greater area, will move the piston in the opposite direction. The piston rod is connected to a rack 32 which acts upon a pinion 33 connected to a shaft 34 for steering the wheel 4 which is also the driving wheel of the vehicle. The valve 9 may be contained within a housing 35 and is operated by a lever 7, very small movements of which produce the required steering. A contact arm may be fixed to the shaft 34 and co-operate with a series of electrical contacts so as to register the direction of steering upon a dial mounted adjacent the housing 35.
Patent GB-854224-A (GB)
Title: Cooling systems for electrical apparatus
Inventor: FAWKES JOHN EDWARD
IPC: B23K9/28
Filed: 1957-12-23
Abstract: 854,224. Protective cut-out arrangements. BRITISH OXYGEN CO. Ltd. Dec. 15, 1958 [Dec. 23, 1957], No. 39978/57. Class 38 (5). [Also in Groups XXII and XXXV] A protective device for fluid-cooled electrical apparatus comprises a conductive member heated by the current flowing through the apparatus and cooled by the flow of fluid, which member is associated with a resettable heatresponsive device which energizes an alarm or controls the current when the temperature of the conductive device exceeds a determined value. A welding gun or other apparatus is fed with current through a conductor 8 and the conductive member 10, heat from the latter acting on a thermostatic switch 11 which disconnects the supply 13 through a contactor 12. The thermostatic switch may be of the manually or automatic resetting type. The conductive member should preferably have a resistance per unit length 20% greater than that of the conductors supplying the apparatus. The system may be employed with oil-cooled cable systems.
Patent GB-923968-A (GB)
Title: Improvements in or relating to valves for use in circuits or containers for liquids
Inventor: BUSWELL ROBERT EDMUND
IPC: F16K24/04
Filed: 1959-11-26
Abstract: 923,968. Valves. WESTERN THOMSON CONTROLS Ltd. Nov. 28, 1960 [Nov. 26, 1959], No. 40176/59. Class 135. [Also in Group XIII] An air escape valve for a liquid system such as the cooling circuit of an internalcombustion engine, comprises a valve seating 22 affording an air escape passage from the system and a buoyancy-operated closure device 23 comprising a buoyant valve head 24 made of synthetic resin material and connected by a stem 25 through the passage to an enlarged retainer head or disc 26, so as to permit the valve head to move to and from the seating as the liquid level rises or falls. This air escape valve may be associated with a water-flow valve, as disclosed in Specification 792,771 and comprising a spring-loaded valve member 13 adjustable by a thermostat 15 which may be made according to any of Specifications 757,429, 792,771, 792,797, 801,881 and 801,882.
Patent GB-957749-A (GB)
Title: Improvements in or relating to the manufacture of extruded plastic netting
IPC: B29C48/09
Filed: 1961-11-13
Abstract: 957,749. Extruding netting. PLASTIC TEXTILE ACCESSORIES Ltd. Nov. 13, 1961 [Nov. 25, 1960], No. 40472/61. Heading B5A. [Also in Division D1] In the extrusion of tubular plastic netting composed of two adjacent layers of parallel strands in intersecting relation, the strands of a third layer which are parallel to the axis of the extruded tube are arranged to contact and adhere to the strands of at least the adjacent of the other two layers in intersecting relation thereto while the said two layers are still in the molten state. Intersecting diagonal strands 1, 2 (Fig. 2) are extruded through orifices 8, 7 in contra-rotating die members 10, 9 respectively, preformed filaments 3 being simultaneously introduced through a hollow shaft 11 and guided by rings 12, 13 to contact and bond with the strands 1 in their molten state prior to cooling in a water bath. The filaments 3 may be of plastic, cotton, glass or metal and may be of circular, square, oval or D-shaped cross-section as may be the strands 1, 2. Alternatively (Fig. 4) the filaments 3 may be extruded through orifices 17 in a fixed die member 14, formed with an annular groove 15 communicating with a cavity 6 for molten plastic via holes 16 in the member 10, and united with the strands 1, 2 over a cylindrical former 18. Alternatively, filaments 3 may be applied exteriorly and may be extruded from a different plastic supply. Specification 836,555 is referred to.
Patent GB-955154-A (GB)
Title: Improvements in and relating to finned tubes and method for the production thereof
IPC: B21C37/26
Filed: 1960-11-24
Abstract: 955,154. Making helically-finned tubing; coiling; angular bending; corrugating; soldering. HALBERGERHUTTE G.m.b.H. Nov. 24, 1960 [Nov. 27. 1959; Oct. 7, 1960], No. 40491/60. Headings B3A, B3E and B3R. A finned tube is made by forming a strip into channel section with a web and two side flanges, then winding it helically on the tube with the flanges extending outwardly and bonding the web portion to the tube. Copper strip 1 is guided by rollers 2, engaging its edges, to a pair of rollers 3, which bend the edge portions of the strip obliquely up relative to the centre portion, then to rollers 4, which transversely corrugate the centre portion, then to rollers 5 and 6 which form the strip into channel section. The centre web of the channel section strip may then be heated by a gas heater 11 before passing through a pickling bath 7, where the side flanges or fins of the channel are cooled by an air jet 12, through a solder tank 8 which coats the underside of the centre web of the channel with solder. The channel strip is then wound helically on to a tube 13, rotated and moved axially, by pressure rolls 15, 16, 17. The flange edges of the channel are stretched, so that the channel will remain coiled on the tube 13, by a tool 18 between the rolls 16 and 17. The tool 18 comprises, Fig. 7, four hard needles 19, 20, 21, 22 between which the channel flange edges pass to be deflected, and thus stretched, and then straightened. The free end portions of the needles are of conical shape. Separate flange straightening means may be provided on the roller 17 by forming the roller of a flat central disc and two outer sections each defining a groove 24, Fig. 9, with the central disc. The channel strip is secured to the tube 13 by heating with a gas burner, at a point along the tube beyond the coiling point, so as to melt the solder. In modified coiling means, Fig. 10, the first roller 16 is spaced an angle B from the point on the tube 13 to which the path of the strip 1 is tangential, a spring 35 urging the strip into contact with the tube. The roller 16, and if desired the roller 17, may comprise a centre section 36, Fig. 11, and two outer discs 37 urged together by springs 38. Alternatively, the rollers 16, 17 may comprise three discs 41, 42, Fig. 12, inclined to one another. A modified stretching tool 18<SP>1</SP> may be used and comprise a rod adjustable in a sleeve pivoted at 43 and have two grooves, Fig. 13, or a single broad groove, Fig. 14 (not showh), at its end to accommodate the channel flanges. Welding by pressure.-To equip a steel tube with aluminium fins the tube is first coated with an alloy of 95% aluminium and 5% magnesium, sprayed thereon after sand-blasting, and the fin secured by pressure-welding.
Patent GB-1088993-A (GB)
Title: Improvements relating to swing-up cylinder devices and roof support systems including such cylinders
IPC: E21D17/02
Filed: 1964-10-05
Abstract: 1,088,993. Mine roof supports. RHEINSTAHL WANHEIM G.m.b.H.- Oct. 5, 1964 [Oct. 8, 1963]. No. 40503/64. Heading E1E. [Also in Division F2] In a roof support system a swing-up cylinder device for moving a cantilevered bar 3 pivoted to a support bar 2 comprises a pressure-fluid cylinder 7, connected pivotally to the bar 2 at 2a, in which works a piston 8 having a rod 10 connected pivotally to the bar 3 at 24 a fluid chamber 26 connected by a valve system to the cylinder 7 so that on movement of.. the piston .8 .into the cylinder. 7 fluid passes therefrom into the chamber 26 and on opposite movement of the piston 8 the fluid passes from the chamber 26 into cylinder 7 and a compression spring 19 biasing the piston 8 to its fully-extended position. A further piston 14 works in the chamber 26 and is biased by a spring 16 to eject fluid from it into the cylinder 7. The spring 19 thus lifts the bar 3 connected to the device at 24 the ends of it being connected to the rod 10 and cylinder 7. The valve system comprises two oppositely-acting non- return valves 20, 21 in passages through the piston 8. The system may include more than one bar 2, each associated with a bar 3 and a device as above. The bar 3 has a roof support plate 4 pivoted to it at 4a. On full extension of the piston 8 the plate 4 is slightly higher than the top of the bar 2.
Patent GB-974775-A (GB)
Title: Improved arrangement of a retractible nose-wheel and a vertical thrust power unit
Inventor: MESSERSCHMITT WILLY
IPC: B64C29/00
Filed: 1962-10-29
Abstract: 974,775. Retractable undercarriages on VTOL aircraft. MESSERSCHMITT A.G. Oct. 29, 1962, No. 40739/62. Heading B7G. To reduce frontal area, the nosewheel of an aeroplane having a vertical thrust turbojet engine is arranged to retract to a position beneath the engine. The Figure shows an aircraft having two lifting jet engines 1, beneath which a wheel 3 may be retracted about pivot 4, the engine and undercarriage bay being closable by doors 2, operable only in conjunction with the undercarriage. When the fuselage cross-section leaves no space for the retracted undercarriage, it may lie outside the section, being faired by doors 2.
Patent GB-1513196-A (GB)
Title: Process for the digestion of the hemi-celluloses of xylan-containing natural products to obtain xylose therefrom
IPC: C07C29/141
Filed: 1976-10-04
Abstract: 1513196 Extracting xylose from xylancontaining material SUD-CHEMIE AG 4 Oct 1976 [8 Oct 1975] 41050/76 Heading C2S A process for the two-stage digestion of hemicelluloses of xylan-containing natural products to obtain xylose comprises (i) treating the starting material in a first stage at standard pressure or elevated pressure and elevated temperature with an alkali hydroxide solution in sufficient amount to split off and neutralize the acetic acid linked in the starting material, filtering off the alkaline solution from the reaction vessel, (ii) extracting the residue whilst in the same vessel at 20-120 C. with at least one liquid surge and (iii) subjecting the solid residue to an acid treatment in a second stage in the same vessel at elevated pressure and temperature, filtering off the acid solution from the reaction vessel and extracting the residue obtained with at least one liquid surge and processing the solution and extract from stage (iii) for the recovery of xylose and xylitol and optionally processing the solution and extract from the first stage for the recovery of organic acids and lignin.
Patent GB-865605-A (GB)
Title: Improvement in gland seals for gas-filled electrical machines
IPC: F16J15/40
Filed: 1959-12-07
Abstract: 865,605. Stuffing-box substitutes. ALLMANNA SVENSKA ELEKTRISKA A.B. Dec. 7, 1959 [Dec. 8, 1958], No. 41431/59. Class 122 (5). A shaft seal for a gas-filled electrical machine, such as a hydrogen-cooled turbo-generator, comprises a seal-ring 5 which surrounds the shaft 1 with a small clearance, is freely housed in a groove in a seal housing 2 and forms therewith an annular chamber 8 supplied through a passage 9 with pressurized sealing liquid which flows through passages 10 in the ring 3 to the rear ends, in relation to the direction of rotation of the shaft, of circumferential viscosity pumping grooves 12, 121, 12<SP>11</SP>, in the inner peripheral surface 11 of the ring. The pumping effect of the grooves increases the sealing liquid pressure towards their front ends. Sealing liquid from the chamber 8 is fed to the side wall clearances between the ring and the groove, as indicated by arrows 13, 13<SP>1</SP> and the sealing liquid pressure in one or both of those clearances may be increased by connecting the front ends of the grooves through passages 15 with recesses 16 in the side walls 4, 5 of the ring. In a modification, two parallel groups of pumping grooves are fed from a common distribution groove in the surface 11. In a further modi. fication, Figs. 5 and 6, also using two parallel groups of pumping grooves 25 and 26, the grooves 25 are fed with sealing liquid from the chamber 8 through distribution groove 33 and communicate through passages 27 with grooves 28 in one side wall of the ring whilst the other grooves 26 are fed with sealing liquid through passages 31, 32 in the housing 2 and 29 and 30 in the seal-ring and distribution groove 34 and communicate through passages 35 with grooves 36 in the other side wall of the ring.
Patent GB-1127980-A (GB)
Title: Improvements in electric timing devices
IPC: G04C10/02
Filed: 1967-09-11
Abstract: 1,127,980. Electric watches. UNITED STATES TIME CORP. Sept. 11, 1967 [Sept. 29, 1966], No. 41454/67. Heading G3T. [Also in Division H2] An electric watch includes a transducer connectable by means of a magnetic switch 10 to a rechargeable battery 20, the magnetic switch being actuated by a coil which is energized when the potential generated by the transducer exceeds the potential of the battery. The transducer consists of a solar cell forming all or part of the watch dial 5 and is connected in series with the switch 10, a resistor 19 and the battery 20. A driving circuit 6 for the gears 29 is connected in parallel with the battery 20 and supplies a coil 7 mounted on a balance wheel 8, the coil co-operating with a magnet 9 to drive the balance wheel. In the presence of light the output potential of the solar cell exceeds the potential of the battery 20, the coil of the switch 10 thus being energized and closing the switch contacts to supply a charging current to the battery. In the absence of light the switch contacts open and the charging circuit is disconnected from the battery to prevent drain on the battery.
Patent GB-1011375-A (GB)
Title: Improvements in and relating to regulating transformers
IPC: H01F29/02
Filed: 1963-10-21
Abstract: 1,011,375. Transformers. WILLEM SMIT & CO.'S TRANSFORMATORENFABRIEK N.V. Oct. 21, 1963 [Nov. 28, 1962], No. 41535/63. Heading H1T. A regulating transformer includes a tapped winding portion B, Fig. 1, or a number of parallel connected coaxial parts I, II, Fig. 3, formed by winding together a plurality b 1 , b 2  of individual conductors which are connected in series in said winding portion or in each part I, II thereof, the number of tappings (1, 2, 3, 4) being greater than the number of the said conductors b 1 , b 2 . Any electromagnetic forces upon the turns are thus distributed over an appreciable part of the length of the core irrespective of the tapping point selected, this part of the length being, for example, ¢, Fig. 1, 2/5, Fig. 2 (not shown), or ¢ of each of two parallel connected parts, Fig. 3. With two cylindrical layer windings B 1 , B 2  having four conductors b 1 <SP>1</SP> to b 4 <SP>1</SP> and three conductors b 1 <SP>11</SP> to b 3 11 respectively, Fig. 4 (not shown), each voltage step 1, 2, 3, 4 may occupy one complete conductor wound on B 1  and ¥ of a conductor wound on B 2 . Six disc coils, Fig. 5 (not shown), each comprising two conductors may provide six voltage steps.
Patent GB-1478374-A (GB)
Title: Piperidyl-methylenedioxybenzene derivatives
IPC: C07D211/46
Filed: 1974-09-24
Abstract: 1478374 Piperidyl - methylenedioxybenzenes WANDER Ltd 24 Sept 1974 [25 Sept 1973] 41577/74 Heading C2C Novel compounds I in which each of R 1  and R 2  is H, halogen, OH, C 1-4  alkyl or C 1-4  alkoxy, R 3  is H or C 1-4  acyl and A is -CR 5 R 6 -(CH 2 ) n -or where each of R 5  and R 6  is H or CH 3  and n is 0, 1 or 2, and acid addition salts thereof, are prepared by (a) condensing acompound II with a compound XII in which Z is Li or MgX, where X is Cl, Br or I, to form compounds I in which R 3  is H, or (b) reacting a compound VI with a compound VII in which Y is a reactive ester of an alcohol, or (c) acylating a compound I in which R 3  is H to form a compound I in which R 3  is acyl. Compounds VI are prepared by hydrogenolysis of corresponding N-benzyl compounds. Pharmaceutical compositions having analgesic activity, for oral administration, comprise a compound I of a pharmaceutically acceptable acid addition salt thereof, together with a pharmaceutical carrier.
Patent GB-886443-A (GB)
Title: Improvements in or relating to curing agents for epoxy resins
IPC: C08L63/00
Filed: 1959-12-08
Abstract: A curing agent for epoxy resins derived from polyhydric phenols comprises a blend of an alkyl ester of an aliphatic alpha-beta unsaturated carboxylic acid and an amino polyamide resin, said amino polyamide resin being derived from the reaction of a polymeric fat acid with an excess of a polyalkylene polyamine having the general formula H2NR(NHR)nNH2 where R is an alkylene radical and n is an integer from 1 to 6.  Specified polyhydric phenols are resorcinol and bis-phenols made by condensing phenol with formaldehyde, acetaldehyde, acetone and methyl ethyl ketone.  Specified polyamines are diethylene triamine, triethylene tetramine, tetraethylene pentamine, di-1,3-propanetriamine, tri-1,3-propane tetramine and di-1,2-propanetriamine.  Specified alkyl esters are dioctyl maleate, dioctyl fumarate, dibutyl maleate, dibutyl fumarate, 2-ethyl hexyl acrylate and hexyl methacrylate.  The Specification describes the curing of an epoxy resin derived from bis-phenol A and epichlorhydrin with blends of an amino-polyamide derived from a polymeric fat acid and triethylene tetramine with: (a) dioctyl maleate, (b) diocytl fumarate, (c) dibutyl maleate, (d) dibutyl fumarate, (e) 2-ethyl hexyl acrylate and (f) hexyl methacrylate.
Patent GB-1503173-A (GB)
Title: Current source including transistors
IPC: H03D5/00
Filed: 1975-01-22
Abstract: 1503173 Transistor current sources GENERAL ELECTRIC CO 22 Jan 1975 [22 Jan 1974] 41909/77 Divided out of 1503171 Heading H3T The subject-matter of this Specification is the same as that described in parent Specification 1,503,071, but the claims are concerned with a current source including an output transistor (Q27, Fig. 2, not shown) having an emitter resistor (57) connected to a power supply line (B+), a semiconductor diode (Q25) and a resistor (51) series connected between the base of the output transistor and the supply line and a direct current amplifier including two transistors (Q24, Q26) of opposite conductivity type to the output transistor having their collectors connected together and to the base of the output transistor and having two inputs controlling the static and dynamic output current of the output transistor. Specification 1,503,172 is referred to.
Patent GB-1439383-A (GB)
Title: Activity and respiration monitor
IPC: F02N99/00
Filed: 1973-09-06
Abstract: 1439383 Monitoring respiration activity electrically SPEARHEAD Inc 6 Sept 1973 [11 Sept 1872] 42052/73 Heading G1N A capacitive pressure transducer is associated with the mattress of a child's cot to provide signals primarily measuring the child's breathing rate and also associated with alarm systems for indicating excessive movements or zero movement. A transducer incorporated in the mattress comprises two wire mesh electrodes 15, 16, Fig. 3 sandwiched between layers 17, 18, 19 of polyurethane foam inside a conductive plastics covering 14. In one embodiment the transducer capacitance is charged by a D.C. supply and its voltage fed via amplifier 21 Fig. 5 and low pass filter 22 to high level comparator 24 to energize alarm 26 when excessive activity is sensed, and low level comparator 25 to energize alarm 30 when no movement is sensed for an interval pre-set on delay unit 29. In an A.C. energized embodiment Fig. 10, the transducer 11 consisting of electrodes 15, 16a, 16b is A.C.-fed from oscillator 35, the pressure signal being amplified at 32 and demodulated at 37 to produce a D.C. signal E3 which is integrated at 38 to form a feedback signal which continuously balances the 2F component of the output El from amplifier 32. The signal E3 is, as before, fed to a high level and low level comparator 43, 44 associated with alarms 46, 52. The high level comparator 43 also controls a counter 47 and a switch 45 which reduces the time constant of integrator 38 when large signals are occurring. The breathing rate is measured at 48, shown on meter 13b and fed to a rate comparator 49 to energize an alarm 50 if the breating rate is too high or too low.
Patent GB-942934-A (GB)
Title: Photographic silver halide emulsions of increased sensitivity containing colour couplers
IPC: C08G75/00
Filed: 1959-12-11
Abstract: 942,934. Photographic colour materials. KODAK Ltd. Dec. 11, 1959 [Dec. 12, 1958],  No. 42128/59. Heading G2C. A photographic silver halide emulsion containing a colour coupler is sensitized with a linear polymer containing thioether and/or ternary sulphonium salt groups in the linear chain, said polymer having a molecular weight of at least 250 and being substantially free from disulphide linkages. The polymeric sensitizer may be one of those described in Specification 942, 932 or one of the polyesters described in Specification 942,935. The emulsion also may contain a gold sensitizer and a sensitizer containing a labile sulphur atom. Application 25246/1911, Specifications 235,211, 541,589, 545,448, 627,814, 636,140, 649,660, 660,012, 680,488, 711,488, 736,922, 739,913, 791,219, 800,108, 873,198, 942,936, 942,938, U.S.A. Specifications 2,347,182 and 2,948,614 also are referred to.
Patent GB-983021-A (GB)
Title: Process for embedding a coil in a mixture of thermoplastic synthetic material and a winding obtained by this process
IPC: H01F41/12
Filed: 1962-11-08
Abstract: 983,021. Injection moulding electrical windings. LUCIFER S.A. Nov. 8, 1962 [Nov. 20, 1961], No. 42207/62. Heading B5A. Thermoplastic synthetic material, preferably of the polyamide type, is injection moulded around an electrical insulated coil 4 on a bobbin 1, 2 in a mould 11, 12. The material is injected from the nozzle 19 of an injection machine through conduits 17, 16 in the mould and a small orifice 15 into the mould cavity 13 so that its temperature is lowered before it contacts the insulation of the coil. Ejectors 14 are provided for removing the moulded winding from the mould and an ejector 25 is provided for the material in the conduit 16. A washer 5 of insulating material may be provided between one end of the coil and the cheek 2 of the bobbin and terminals 6, 7 introduced therebetween. The cheek 2 may have bores 8 to receive tubular parts 9 on the terminals which is filled and covered by the plastic material. If desired the coil may be covered prior to moulding with a protective foil of P.T.F.E. to protect it against the heat.