baber/WOPTO huggingface dataset:
Patent GB-1362009-A (GB)
Title: Electro-magnetic support system for supporting and/or guiding a vehicle relative to a track by means of magnetic forces provided by a plurality of electro-magnets
IPC: B60L13/06
Filed: 1971-10-22
Abstract: 1362009 Electromagnetic support for vehicle MESSERSCHMITT - BOLKOW - BLOHM GmbH 22 Oct 1971 [27 Oct 1970] 49210/71 Heading B7L An electromagnetic support system comprises electromagnets, e.g. 1, for supporting and/or guiding a vehicle relative to a track by means of magnetic forces, and at least two different voltage electrical energy supply sources 2, 3 for the electromagnets. The sources 2, 3 may, as shown, be supplied from a common main source 6, fed from a three-phase generator 5, and one source 3 supplied via a step-down transformer 4. Each electromagnet 1 is normally supplied by the lower voltage source 3 via a gate 8 such as a thyristor. A regulator 9 is responsive to external thrusts acting on the vehicle to momentarily couple higher voltage source 2 to the electromagnet 1 by closing gate 8 and opening a gate 7 such as another thyristor. The entire system in use is mounted on the vehicle to be supported and/or guided. Although only a single electromagnet 1 is shown, others are similarly connected to the sources 2 and 3 and each have gates 7 and 8 and a regulator 9. Main voltage source 6 has a power rating to provide only vehicle support and/or guidance, and power supplied to counteract the effect of thrusts is derived by exceeding the power rating of the source 6.
Patent GB-1391225-A (GB)
Title: Device for preventing foaming of oil being by-passed in an automobile hydraulic power unit
IPC: F15B21/047
Filed: 1972-10-27
Abstract: 1391225 Rotary positive-displacement pumps ATSUGI JIDOSHA BUHIN KK 27 Oct 1972 [26 April 1972] 49621/72 Heading F1F Foaming of oil by-passed to a tank 10 from the discharge port 7 of a vane-type oil pump is prevented by by-passing the oil via an intermediate chamber 30. This reduces the pressure of the oil in two steps so that the pressure differential across orifice 30a leading from chamber 30 to tank 10 is in the range 0À5 kg/cm<SP>2</SP> to 3À0 kg/cm<SP>2</SP> which does not produce foaming. Increased pressure at port 7 lifts valve 25 to increase the by-pass flow through annular groove 28 and passage 29. A sudden increase in line pressure downstream of orifice 17a is communicated via passages 37, 38 to the other side of valve 25 and lifts a ball valve 34 off its seat against spring 31 so that the oil can pass to chamber 30 and tank 10. Chamber 30 is closed by cover 8 which is held fast against the end of the chamber by a stay bolt 39 and nuts thereon which co-operate with a mounting bracket 18 retained in position by nipple 17 leading to the load. Cover 8 is spaced from the oil pump to define tank 10.
Patent GB-1023743-A (GB)
Title: Improvements in or relating to the treatment of tea leaf
Inventor: PICKERING WILLIAM
IPC: A23F3/08
Filed: 1963-12-17
Abstract: 1,023,743. Fermenting tea leaf. DAVIDSON & CO. Ltd. Dec. 4, 1964 [Dec. 17, 1963], No. 49727/63. Heading A2B. Withered and rolled tea leaf is fermented by feeding it to the higher end of a rotating axially inclined drum 11 through an opening 22 and feeding air conditioned to preferably at least 95% relative humidity and at a temperature between 70‹ and 80‹F. into the drum 11 either through an opening 26 at the lower end of the drum 11 or by means of a conduit (not shown) passing through the opening 26 and extending to a perforated length of conduit in the upper half of the drum 11. The tea leaf is fed in continuously and is withdrawn through a discharge orifice 30 at a rate controlled by the degree of opening of a door 31. The drum is driven by conventional means.
Patent GB-1195870-A (GB)
Title: Ventilated Disc Brake Assembly.
IPC: B61H5/00
Filed: 1967-11-02
Abstract: 1,195,870. Disc brakes. BUDD CO. 2 Nov., 1967 [9 Nov., 1966], No. 49880/67. Heading F2E. In a ventilated disc brake having air passages 27 extending outwardly from a central opening in the disc 17 a flanged mounting member 33 is attached to one side of the disc over the control opening and two closure members 43, 45 which have apertures 44, 46 are mounted over the other side of the central opening, one of the members 43 is prevented from rotating by a means 57 and the other member 45 is rotatable relative to the member 43 by an actuator 61 which allows the apertures 44, 46 to be aligned to allow air flow or to be out of alignment to close the central opening. On braking air is supplied to the actuator 61 via air line 63 and rod 67 is moved by piston 65 so as to rotate the outer plate member 45. The apertures 44, 46 are then aligned and cooling air passes through the brake disc 17. When the brakes are released return of the plate 45 to close the central opening is delayed by a delay valve (72, Fig. 1, not shown). Movement of the plate 45 relative to the plate member 43 is allowed by slot 41. The brake may be for a rail car (Fig. 1, not shown) in which the brake pads (21), 22 are actuated from a brake actuator (25) via levers (23, 24). In a modified arrangement the plates 43, 45 may be cone or drum shape.
Patent GB-1429546-A (GB)
Title: Method and device for lowering the temperature in tunnel kilns
IPC: F27B9/12
Filed: 1973-10-26
Abstract: 1429546 Valves M LEISENBERG 26 Oct 1973 [8 Nov 1972] 50026/73 Heading F2V [Also in Division F4] An electromagnetically operated valve, Fig. 2, forming a pulse generator for feeding cooling water in bursts to a tunnel furnace comprises a coil 42 acting on an armature 43. When the coil is not energized, a spring 48 urges a head 44 on the armature against the housing to close the outlet. Passages 47 for the cooling water ensure the rapid closing of the valve when the coil 42 is de-energized. A valve 29, Fig. 3, connected to the outlet of the pulse generator has a plunger 53 moving in a cylinder 52 against spring 54. A tapered spigot 56 projects into the outlet 55, the face of the plunger 53 engaging the face of the cylinder at 62 to close the valve. By adjusting the set screw 60, the flow through the valve for a given water supply pressure is controlled.
Patent GB-1091347-A (GB)
Title: Alloys and the production thereof
Inventor: HOFFMAN LEWIS CHARLES
IPC: C01G5/00
Filed: 1966-11-09
Abstract: Powdered alloys of Pd-Au, Pt-Au, Ag-Au, Ag-Pt or Pd-Pt are prepared by co-reduction of a solution of compound of the metals by the addition of a reducing agent.  The soluble compounds of the metals may be bromides, chlorides (except in the case of silver containing alloys) cyanides or nitrates and the solvent may be water or another polar solvent (e.g. chlorinated hydrocarbons for chloride salts). Suitable reducing agents are hydrazine, zinc dust, hypophosphorus acid, sodium hydrosulphite, hydroquinone, sulphurous acid, sodium sulphite, ferrous sulphate or sodium borohydride. Pairs of reducing agents, more efficacious for the different metals, may be used in combination. The pH of the solution is preferably adjusted to between 4.5 and 6.5 prior to precipitation.  The average particle size of the powder is preferably 0.1 - 0.5 microns.
Patent GB-1470108-A (GB)
Title: Printing machine
IPC: B41J13/12
Filed: 1974-11-20
Abstract: 1470108 Selective printing INTERNATIONAL BUSINESS MACHINES CORP 20 Nov 1974 50345/74 Addition to 1431742 Heading B6F To facilitate front insertion of documents in a printer having a print head carriage 10 traversing platen 12, a strip is attached to the carriage 10 so as to be held taut across the face of the platen 12. The document is inserted between the strip and the platen. The strip has an aperture 30 through which the head 40 can print. As shown, the strip may be of polyester resin and attached to a frame-mounted spool 23 urged by spring 24 in the direction of the arrow. Alternatively the strip may be attached to a spool at either end so as to extend across the platen at all times. The front edge of apron 13 may be adjustable to position the front-inserted document.
Patent GB-1480740-A (GB)
Title: Manufacture of solid metal spherical articles
IPC: B21K1/02
Filed: 1973-10-31
Abstract: 1480740 Making metal spherical articles; tumbling IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 14 Oct 1974 [31 Oct 1973] 50607/73 Headings B3A and B3D A method of making solid metal spherical articles comprises tumbling a charge of initially non-spherical preforms with a quantity of liquid coolant in a rotating barrel 12. the liquid having an evaporation temperature below the softening temperature of the metal of the preforms so that the liquid is heated to its evaporation temperature by the tumbling action, allowing the distillate to condense and return to the preforms and continuing the process until the preforms are spherical in shape. The preforms are cut from lead or lead/antimony wire and placed in the barrel 12, which is of steel and has an internal shot-blast finish to promote tumbling, the coolant being either water or ethylene glycol. The barrel is closed by an aluminium alloy end cap 18 on which are formed cooling fins 21. Four barrels are mounted on a base (10), Fig. 2 (not shown), which rotates about its own axis (11) and simultaneously the barrel rotate about their own axes (13). The tumbling action in each barrel causes evaporation of the coolant which condenses in the end cap 18 and falls back on to the preforms. The end cap is provided with a vent 22, but this is omitted in barrels operating under internal pressure. The apparatus is used for making lead shot for cartridges or weights for fishing tackle. Instead of shot blasting fins may be mounted internally of the barrel which may be mounted for rotation about a horizontal, vertical or intermediate axis.
Patent GB-1485423-A (GB)
Title: Treatment of waste water to remove water-soluble organic anionic substances
IPC: G04G17/00
Filed: 1974-11-25
Abstract: Organic effluents (waste waters) which contain water-soluble organic anionic substances and/or phenols are treated. For this purpose, the acidic effluent is first brought into contact with a solution of at least one amine of the formula: <IMAGE> in a water-insoluble organic solvent. In formula (1), R1 and R2, which can be identical or different, denote hydrogen atoms or halogen atoms or alkyl groups having 1 to 4 carbon atoms and R signifies an alkyl or alkenyl group having 8 to 18 carbon atoms. The aqueous layer is then separated off from the organic layer. Finally, the organic layer is brought into contact with an aqueous alkaline solution. As a result, the anionic substances and/or phenols are transferred into the aqueous alkaline layer and the amine is recovered in the form of a solution in the organic solvent.
Patent GB-1528680-A (GB)
Title: Dry cells
IPC: H01M6/06
Filed: 1976-12-10
Abstract: 1528680 Fe/Cr cathode collector MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 10 Dec 1976 [18 Dec 1975 29 Dec 1975] 51592/76 Heading H1B A dry cell comprises (a) a depolarizing mix of MnO 2  and carbon black, a neutral salt electrolyte, a Zn anode and a cathode collector of an alloy containing a major proportion of Fe and more than 10% by wt. Cr. The alloy may also contain 0À5 to 3% by wt. Mo and/or 2 to 15% by wt. Ni. Suitable alloys listed are austenitic, ferritic and martensitic stainless steels. The electrolyte may be zinc perchlorate or
Patent GB-1124990-A (GB)
Title: Transistor threshold detector circuit
Inventor: BEZDEL WINCENTY
IPC: H03K3/282
Filed: 1965-12-07
Abstract: 1,124,990. Transistor circuits. STANDARD TELEPHONES & CABLES Ltd. 7 Dec., 1965, No. 51807/65. Heading H3T. [Also in Division G4] Complementary transistors T1, T2 have their emitters coupled together and the collector of T1 connected for D.C. to the base of T2 to form a regenerative loop, the base of T2 being connected to a reference potential and the base of T1 to a capacitor whereby, when the capacitor voltage exceeds the reference by a predetermined amount the transistors conduct. As shown the capacitor voltage may be clamped through D4 but if released may increase until the transistors conduct to discharge the capacitor and produce an output pulse. Repeated pulses will be produced in like manner if the constants are suitably chosen. Charging may be effected from a separate capacitor C7 which, when unclamped through D3 or D5, progressively charges or discharges to a b level through R10 as that the output pulse repetition frequency progressively increases or decreases. Clamping or alternatively gating of the input signal may be effected by a transistor instead of a diode and the basic circuit may be used as a pulse counter by stepwise charging the capacitor (Fig. 4, not shown).
Patent GB-1080609-A (GB)
Title: An improved billet-piercing press
IPC: B21J9/04
Filed: 1965-12-08
Abstract: 1,080,609. Billet piercing. SCHLOEMANN A.G. Dec. 8, 1965 [Dec. 16, 1964], No. 52000/65. Heading B3H. A billet piercing press comprises an ejector head 22 having a bore 28 corresponding to a punch core 26, which is sheared from the end of the pierced billet 13. The billet is located in a punching pot 12 and pierced by lowering a mandrel 19 which is surrounded by an upsetting ram 20. During the piercing operation the bore 28 is filled by a filling piece 23 which is supported on a surface 25 of a crossbeam 1 of the press. When the billet has been pierced the punch core 26 is removed by applying fluid pressure to a cylinder 6 which acts against a fixed piston 4 to raise a thrust rod 7 and the ejector head 22. The ejector head acts against the stationary mandrel 19 to shear off the punch core which falls into a chamber in the thrust rod from which it may be removed laterally. The mandrel 19 is then raised and the billet ejected by a further movement of the ejector head. The shearing of the punch core may alternatively be carried out by supplying fluid pressure to cylinders 18, which raise the punching pot 12 through rods 16. This raises a bearing ring 21 and hence the ejector head 22 to shear the punch core. The mandrel is then raised and the billet ejected from the punching pot by supplying fluid pressure to the cylinder 6. After ejection of the billet the cylinder 6 is retracted to its original position by supplying fluid pressure to a bore 11 in the stationary piston 4, this causing downward movement of a piston 10 which draws down the cylinder 6.
Patent GB-1286836-A (GB)
Title: Improvements in or relating to differential pressure gauges of manometers
Inventor: KONARD WALTER J
IPC: G01L7/00
Filed: 1969-10-24
Abstract: 1286836 Pressure gauges W J KONRAD 24 Oct 1969 [24 Oct 1968] 52188/69 Heading G1L In a piston type monometer 1 in which a cylindrical bouyant member 2 is disposed in a limb 6, of the "U" shaped monometer at atmospheric pressure or within a gas light enclosure, and the other limb 7 is connected to a pressure source the arrangement is such that the pressure difference between the limbs 6, 7 causes the level of mercury in limb 6 to raise or lower the position of the member 2, connected to weights 8 to lower the centre of gravity, which member 2 is suspended from a portion of a balance arm 4, to the right of pivot 19 on a frame 9, an electric motor 10, continuously rotates a bevelled friction wheel 12 to drive one or the other of friction wheels 14 to move a counter weight 5 backwards or forwards along the balance arm 4 to an equilibrium position and to drive an indicating device such as a drum counting member 15.
Patent GB-1413476-A (GB)
Title: Speed control for dc motors
IPC: A61G5/04
Filed: 1971-11-10
Abstract: 1413476 Motor controllers CAV Ltd 30 Oct 1972 [10 Nov 1971] 52202/71 Heading HIS [Also in Division H2] Two motor speed controls each including a potentiometer 14 (see Division H2) are incorporated in a single bar and coupled through gearing 15, 16 to a single control lever 17 which is biased to a central position by cams 18 and spring-loaded followers 20. When the lever is moved to left or right, the potentiometer sliders are moved in opposite directions so that the motors rotate in opposite directions, and when the lever is moved into or out of the plane of the drawing, both motors drive in the same direction. Switches 19 actuated by cams 18 control the polarity connections to the motors.
Patent GB-1269737-A (GB)
Title: A rotary heating device
IPC: D02J13/00
Filed: 1969-10-27
Abstract: 1,269,737. Rollers. MITSUBISHI JUKOGYO K.K. 27 Oct., 1969 [25 Oct., 1968], No. 52604/69. Addition to 1,237,308. Heading F2U. The electrically heated roller of the parent Specification is modified by providing longitudinal lands 138 in the outer surface of the fluidcontaining annular space 114, these lands being continuous (Figs. 1 and 2) or discontinuous and formed in a series of juxtaposed rings (Figs. 3 and 4). Reference has been directed by the Comptroller to Specification 1,215,270.
Patent GB-1098475-A (GB)
Title: Polyether/urethane/amide copolymer elastomers
Inventor: WITSIEPE WILLIAM KENNETH
IPC: C08L75/00
Filed: 1964-12-29
Abstract: An elastomer consists essentially of 40 to 60 wt. per cent units (a) -O-G-O-, 5 to 25% units (b) -O-B-O-  and 2 to 5 wt. per cent units (c) -D- all connected through the radical (d) -CO-Z-CO- and includes a polyamide segment (-D-CO-Z-CO-)n, where n>1.  G and B are radicals obtained by removing the OH groups from (G) a polyether glycol of M.W. 800 to 3000 and (B) a glycol of M.W.<200; D is -CH2-CH2- or -(CH2)4-; and Z is a bivalent radical resulting from removal of amine hydrogens from piperazine or 2-methyl, 2,5-dimethyl or 2,3,5,6-tetra methyl piperazine.  They may be prepared by reacting a diamine H-Z-H with the bishaloformates of the glycols HO-G-OH and HO-B-OH and the halide of the acid D-(COOH)2, e.g. by a solution/interfacial technique employing an aqueous solution of an acid acceptor and an inert water-immiscable solvent capable of dissolving the reaction product such as a halo-alkane. The elastomers may be compound with various conventional compounding ingredients, e.g. antioxidants, light stabilizers, pigments, fillers and plasticizers, and may be mixed with other polymers, e.g. polyamides, vinyl polymers and fluorocarbon polymers and telomers and may be shaped by various processes.  They may also be used in the melt or solution as textile-treating materials or adhesives.  Polyisocyanates are incorporated in the solvent adhesives.  Various moulded and other articles which may be made from the elastomers are mentioned.
Patent GB-1116586-A (GB)
Title: Iodinated derivatives of amino-isobutyric acid and rontgen contrast compositions containing them
IPC: C07C231/02
Filed: 1966-11-25
Abstract: The invention comprises N-acetyl-N-(2,4,6-triiodo - 3 - aminophenyl) - b  - aminoisobutyric acid, its diastereoisomers having the formulae <FORM:1116586/C2/1> or <FORM:1116586/C2/2> and the esters and salts thereof.  The diastereoisomers may be separated by fractional crystallization, for example by crystallizing one isomer from an alcoholic solution of the mixture of ammonium salts by acidification with acetic acid.  The mixture of isomers is prepared by coupling m-nitroaniline with methacrylic acid to form N - (3 - nitrophenyl) - b  - aminoisobutyric acid, acetylating the coupling product forming N - acetyl - N - (3 - nitrophenyl) - b  - aminoisobutyric acid, reducing the acetyl derivative and iodinating the reduction product. The diastereoisomers can be esterified with absolute ethanol and H2SO4 or converted to sodium or calcium salts.  The both isomers can be diazotized and de-aminated to yield the same N-acetyl -N(2,4,6 - triiodophenyl) - b  - amino - isobutyric acid.ALSO:X-ray contrast compositions comprise a diasterioisomer of formul : <FORM:1116586/A5-A6/1> and <FORM:1116586/A5-A6/2> an ester or salt thereof, or a mixture of such compounds, in admixture with a suitable carrier, for example in the form of tablets or fruit jelly lozenges.
Patent GB-1386367-A (GB)
Title: Process for the preparation of thermoplastic polymers
IPC: C08F2/20
Filed: 1972-11-16
Abstract: 1386367 Graft polymerization process DENKI KAGAKU KOGYO KK 16 Nov 1972 [16 Nov 1971] 52998/72 Heading C3G A graft polymer is made by a process in which a feed comprising an elastomer, acrylonitrile and an aromatic vinyl or vinylidene monomer is polymerized in a first step until the degree of polymerization is in the range of 10 to 40%, an organic peroxide catalyst in an amount of from 0À01 to 0À15% by weight, based on the feed, being incorporated at any time when the degree of polymerization is in the range of 0 to 15%, and polymerization is continued in a second stage, an azo-compound catalyst in an amount of at least 0À01% being incorporated at any time when the degree of polymerization is greater than 15% but not greater than 40%, during said second stage. The feed may comprise an additional monomer. Sheets and moulded products prepared from the resultant graft polymers are free from odour and fish eyes and preferably comprise 4 to 8% of elastomer, 10 to 35% of acrylonitrile units, methyl methacrylate units in an amount of up to 15% and a balance of aromatic vinyl or vinylidene units. Examples are given in which (a) polybutadiene is grafted with styrene and acrylonitrile in bulk using benzoyl peroxide as catalyst, azobiscyclohexane-carbonitrile and beta-bromostyrene are added and the mixture is kneaded before polymerization is continued in aqueous suspension; (b) as method (a) except that 2,5-dimethylhexane - 2,5 - dihydroperoxide or lauroyl peroxide is used in the first stage; (c) butadienestyrene rubber is grafted with acrylonitrile, styrene and methyl methacrylate by method (a); (d) butadiene-styrene rubber is grafted as in method (a), except that azobisisobutyronitrile is used together with azobiscyclohexanecarbonitrile; (e) polybutadiene is grafted with acrylonitrile and styrene by a continuous bulk polymerization process in three autoclaves, dibutyl peroxide being present in the feed mixture and an azobiscyclohexane-carbonitrile/ styrene/acrylonitrile solution being fed to the second autoclave; (f) as method (e), except that toluene is present in the feed mixture; (g) butadiene-styrene rubber is grafted in bulk with acrylonitrile, styrene and n-butyl acrylate, or methyl methacrylate, tertiary butyl perpenzoate being added when the degree of polymerization was 14% and azobisvaleronitrile being present in the second stage, which is carried out in aqueous suspension.
Patent GB-531333-A (GB)
Abstract: 531,333. Door-operating appliances. EDUCATIONAL SUPPLY ASSOCIATION, Ltd., and LEONARD, J. W. July 18, 1939, No. 20860. [Class 65 (i)] A sliding and folding door operated by an electric motor 2 mounted on the movable end post 3 of the door, has a covered feed cable 1 mounted on the door so that it extends therewith when the door is moved to closed position. The cable may be attached to the linked stays 4 on the door leaves and pass through loops 6 on the posts. In another form, it extends along the door to a spring drum which takes it up as the door is moved to open position. Specifications 120,977, 5828/13, [both in Class 20 (iii)], and 462,868 are referred to.
Patent GB-1451292-A (GB)
Title: Process for the production of polyethylene
IPC: C08F4/60
Filed: 1974-12-09
Abstract: 1451292 Polyethylene production using Ziegler catalyst RUHRCHEMIE AG 9 Dec 1974 [11 Dec 1973] 53141/74 Heading C3P Polyethylene having a molecular weight above 500,000 is obtained by polymerizing ethylene at 30 to 130 C. in the presence of a Ziegler catalyst comprising (A) a titanium III halide, (B) an organoaluminium compound and (C) an alcohol, the molar raio of (A) to (B) being between 5 : 1 and 1 : 5, the proportion of (C) being 2 to 10 moles per kg. of (A) + (B), and the ethylene monomer containing less than 5 p.p.m. oxygen. Component (C) may be mono- or polyhydric alcohol. The examples refer to batch or continuous ethylene polymerization using a suitably pure monomer, a purified hydrocarbon fraction as diluent, and a catalyst comprising (A) TiCl 3  obtained from TiCl 4  + Et 2 AlCl, (B) Et 2 AlCl and (C) butanol. The minimal oxygen content in the monomer feed ensures that films and deposits on the polymerization vessels and stirrers are largely eliminated.