baber/WOPTO huggingface dataset:
Patent GB-1489055-A (GB)
Title: Magnetic coupling
IPC: H02K49/10
Filed: 1973-08-17
Abstract: 1489055 Magnetic couplings R E DUPONT RESEARCH & INVESTMENT SERVICES Ltd 12 Nov 1974 [17 Aug 1973] 38988/73 Heading H2A A rotary magnetic coupling comprises two soft magnetic rotors 6, 8 in which poles are respectively induced by two polarized stators 1, 4. The stators shown each comprise a series of annular radially magnetized permanent magnets, e.g. I<SP>1</SP>, I<SP>11</SP>. Each rotor comprises a set of bars, e.g. 6<SP>1</SP>, 6<SP>11</SP>, resembling a squirrel cage, the bars being matched as shown so that adjacent bars in each rotor interact with opposite poles of the associated stator. Thus each of the two rotors present, at their facing surfaces on opposite sides of a non-magnetic partition 10, an annular array of induced poles of alternate polarity. In a modification, Fig. 2 (not shown), the stator magnets are axially magnetized and co-operate with soft magnetic inserts providing poles interacting with circumferentially extending soft magnetic inserts on the rotor bars. The permanent magnets may be replaced by coils.
Patent GB-1363278-A (GB)
Title: Latex compositions
IPC: C09D133/04
Filed: 1971-08-20
Abstract: 1363278 Polymer latex DOW CHEMICAL CO 20 Aug 1971 39141/71 Heading C3P A polymer latex is formed by polymerizing in an aqueous medium at a pH below 7 in the presence of a non-ionic surfactant a monomer mixture comprising (a) monomer or monomers providing carboxylic acid groups in an amount of 0À26-5À2% and ester groups derived from an amino alcohol having at least one covalently bonded hydrogen on the nitrogen in an amount to provide 0À0085-0À85% of nitrogen based on the weight of total monomers and (b) at least one water insoluble comonomer, and increasing the pH of the latex to above 8. The amino alcohol ester and acid groups may be provided in the same monomer as a maleate or similar half ester but in the examples are used mixtures of an acid, e.g. methacrylic, acrylic, fumaric, itaconic or maleic acid, and an amino alcohol ester, e.g. 2-aminoethyl methacrylate hydrochloride which may be used in combination with dimethylaminoethyl methacrylate hydrochloride. Comonomers used are combinations of nbutyl acrylate, methyl methacrylate, ethyl acrylate, styrene and butadiene. Polymerization is effected with redox catalysts using a non- ionic surfactant and optionally a cationic surfactant. The latex may be made alkaline and into the salt form by adding ammonium hydroxide and further non-ionic surfactant and formed into a paint by adding pigment.
Patent GB-363515-A (GB)
Title: Improvements in or relating to drawing instruments
IPC: B43L13/24
Filed: 1930-12-31
Abstract: 363,515. Drawing-instruments. GESS. NER, E. A., 4, Wettinerstrasse, Aue, Erzgebirge, Germany. Dec. 31, 1930, No. 39271. Convention date, Dec. 31, 1929. [Class 97 (iii).] In a section-lining apparatus comprising a slide carrying an angularly adjustable rule and adapted to move along a T-square either in steps by means of a swinging lever coupled with a rack drive or freely by hand, the slide runs between two U -shaped guides on the T-square and is guided by the two free flanges of the guides. A T-square blade 20 carries parallel guides 21 along which slides a channel-shaped sheet-metal member 25. An arm 30 secured to one side of the member 25 carries a protractor disc 32 having pivoted thereto at 35 a rule 34 which may be secured in any desired position by a clamping screw passing through the slot 33. Two racks 40 on the T-square blade 20 engage toothed wheels 42 rigidly connected with one another by the sleeve 43 and rotatably mounted on the pivot 44 in the member 25. Upon the sleeve 42 a wheel 50 is mounted fast and a fork 52 carrying a handle 54 is mounted loose. Displacement of the member 25 is effected by rotating the handle 54 against the action of the spring 63 in the direction of the arrow, Fig. 4. A resilient locking lever 55 on the handle 54 engages a groove in the wheel 50, causing the latter and the toothed wheels 42 to rotate with the handle. To adjust the amount of displacement the freedom of movement of the handle 54 is controred by adjustable stops 60, 61. The locking lever 55 may be pivotally mounted to enable it to be permanently swung out of action. In a modification the handle 54 connects with the wheel 50 by pawl and ratchet mechanism.
Patent GB-811536-A (GB)
Title: Butyl rubber co-vulcanizates
IPC: C08L23/22
Filed: 1956-12-27
Abstract: A rubbery copolymer of a major proportion of a C4 to C8 mono-iso olefin and a minor proportion of a C4 to C10 multi-olefin and a more highly unsaturated natural or synthetic rubber are co-vulcanized by sulphur in the presence of bismuth oxide and/or cuprous oxide.  The highly unsaturated synthetic rubber may consist of a polymer obtained by the polymerization in aqueous emulsion of a conjugated diolefin, e.g. butadiene, isoprene, piperylene, dimethyl butadiene, and 2-chlorobutadiene-1,3, singly or in combination, or by the emulsion copolymerization of such diolefins with styrene, a -methyl styrene, p-methyl styrene, a -methyl p-methyl styrene, acrylonitrile, methacrylonitrile, chloroacrylonitrile, methyl acrylate or methacrylate, or methyl vinyl ketone or mixtures thereof. Alternatively, the synthetic rubber may consist of polymers of 3-chloro-butadiene-1,3, 3-bromo butdiene-1,3; 3-cyano butadiene-1,3; chloro isoprene, bromo isoprene or cyano isoprene, or copolymers of butadiene-1,3 or 3-chloro-buatdiene-1,2 with vinylidene chloride, p-chloro styrene, or methyl a -chloro acrylate; copolymers of 3-chloro butadiene-1,2 with acrylonitrile or methacrylonitrile; and copolymers of 2,3-dimethyl butadiene with either 3-chloro butadiene-1,3 or 3-cyano butadiene-1,3.  The vulcanizable mix preferably contains 2 to 30 parts by weight of bismuth or cuprous oxide or mixture thereof, 100 parts total rubber, 0 to 50 parts zinc oxide, 2 to 50 parts sulphur, and 0 to 2 parts of sulphur-containing accelerator such as tetramethyl thiuram disulphide or tellurium diethyl dithiocarbamate.
Patent GB-868141-A (GB)
Title: Improvements in and relating to combined lighting and air conditioning systems
IPC: F21V33/00
Filed: 1957-12-19
Abstract: 868,141. Lighting fittings. BENJAMIN ELECTRIC Ltd., and CAMPBELL, H. G. March 19, 1959 [Dec. 19, 1957], No. 39473/57. Addition to 864,894. Class 75(3). [Also in Group X] In a combined lighting and air conditioning apparatus comprising a concave reflector having means for supporting a light source and an air duct communicating with the interior of the reflector as in the parent Specification, a light transmitting panel substantially completely closes the open part of the reflector leaving a narrow marginal gap for the passage of air from the interior. In the form shown, reflector 11 has an upper portion in the form of an inverted channel 12 and is mounted in an opening in a false sealing 16. The mouth of the reflector 11 is almost completely closed by a translucent panel 17 carried by a frame 18 supported by hangers 20 from the reflector 11, apertures 21 being provided in the frame 18 for passage of air. A closure member 24 is supported at the top of the reflector. An air duct 22 is connected to the space above, the member 24 by a union 23 in which is a transverse support strip 27 carrying two vertical supports 30 on which is supported a rod 31 hinged to which are two semicircular plates 32 controlled by an adjusting screw 34 so that the air flow can be varied by altering the position of the plates.
Patent GB-883051-A (GB)
Title: Improvements relating to processes for rendering oil bearing materials
IPC: C11B1/12
Filed: 1956-12-28
Abstract: <PICT:0883051/III/1> Oil-bearing material, e.g. animal bone, meat or fish material, fish, and fish offal, are reduced to small lumps and rendered within the interior of a trough-like or tubular casing containing at least one helical rotor revolving at a controlled rate in peripheral proximity to the wall of the casing, both the wall of the casing and also at least the thread portion of the rotor being internally heated at a controlled temperature.  As shown, in a preferred embodiment, two prebreakers of the hammer mill type, A and B, are used, A being employed for bone and B for meat or fat. Disintegrated material from the prebreakers is fed into inlet 3 of a device known as a "Thermascrew", which consists of a casing within which rotates a series of helical rotors, the shaft and thread of the rotors and the casing being steam heated.  The rotor threads are of the same hand throughout.  The rendered material and fat leaving outlet 4 pass on to screen 5, the fat collecting in pan 6, and the rendered material passing into a receiver.  If required, the rendering step may be performed under superatmospheric pressure with a suitably modified "Thermascrew".
Patent GB-1188247-A (GB)
Title: Process for the Vulcanisation of Fluorinated Polymers
Inventor: BARNEY ARTHUR LIVINGSTON
IPC: C08L27/00
Filed: 1968-08-19
Abstract: 1,188,247. Oxygen-containing heterocyclic compounds. E. I. DU PONT DE NEMOURS & CO. 19Aug., 1968 [17 Aug., 1967], No. 39635/68. Heading C2C. [Also in Division C3] 2,5,8,11 - Tetraoxabicyclo[10.4.0]hexadecane is prepared by hydrogenating 2, 3-benzo-1,4, 7,10- tetraoxacyclododeca - 2 - ene. A barium complex of 2,5,8,15,18,21-hexaoxatricyclo[20.4.0.0<SP>9,14</SP>]hexacosane is prepared by treating the compound with Ba(OH) 2 .8H 2 O or Ba(OH) 2 .H 2 O in methanol.
Patent GB-1457053-A (GB)
Title: Process for preparation of anionic polyurethane emulsions
IPC: C08G18/00
Filed: 1974-09-12
Abstract: 1457053 Polyurethane emulsions KAO SOAP CO Ltd 12 Sept 1974 [18 Sept 1973] 39843/74 Heading C3R An aqueous anionic polyurethane emulsion is made by (1) reacting in liquid phase, and in a ketone solvent, at - 20 to + 70 C., isocyanateterminated urethane prepolymer (A) may be reacting a polyol of MW 200-10,000 with excess polyisocyanate in the absence of a solvent or in the presence of an inert solvent, with excess of a polyalkylene polyamine (B) which has #2 primary or secondary amine groups (G), (B) being where A is a secondary or tertiary amino group, and R is alkyl substituted with #1 primary or secondary amino group, and X is Cl or Br, the ratio of the number (b) of amine groups (G) to the number (a) of polyisocyanate groups in (A) being in the range 1 <b/a#5, the reaction being carried out till -NCO groups cannot be detected, thus forming a polyurethane-ureapolyamine (P), (2) reacting (P) in the liquid phase at 5-70 C. with a cyclic dicarboxylic acid anhydride in amount equimolar to the amino groups of (P), (3) adding an aq. solution of a base to adjust pH to 6-9, and (4) removing the organic solvent. The anhydride may be maleic, succinic, phthalic, di-, tetra-, or hexa-hydrophthalic, trimellitic, or itaconic anhydride. The base may be an alkali metal hydroxide, carbonate, or bicarbonate, or R<SP>11</SP>NH 2 , R<SP>11</SP> 2 NH, or R<SP>11</SP> 3 N, where R<SP>11</SP> is C 1-4  alkyl, hydroxyethyl, or hydroxypropyl. 50% moles of (B) may be replaced by diamine(s) or adducts thereof with alkylene oxide, acrylonitrile, or acrylate. The ketone solvent may be mixed with other solvent(s). The OH groups derived from (B) remain unreacted, in the polyurethane. An emulsifier may be added. The emulsion may be moulded and thermally crosslinked. Or it may be used to impregnate or coat fibrous materials, non-woven fabrics, paper, leather, rubber, wood, metals, glass or plastics, followed by drying. It may be used as an adhesive, or to form films.
Patent GB-400653-A (GB)
Abstract: 400,653. Electrostatic meters. DRYSDALE, C. V., Derek Corner, Kingsway, Hove, Sussex. April 28, 1932, No. 12254. [Class 37.] For measuring high voltages, an electrostatic voltmeter is used in combination with a series condenser consisting of two spaced conductors 5, 6, Fig. 1, one of which encloses the other, the outer being connected to the high voltage supply 4, and the inner to the voltmeter, or to the inner conductor of a similar condenser shunting the voltmeter, by means of a wire passing through an insulator 7. For measuring the voltage between two high tension lines, two spherical condensers may be used, the outer spheres being connected to the lines and the inner spheres to the plates of a third condenser in shunt with the voltmeter. The fixed and moving elements of the voltmeter may be shaped to give any desired form of scale in accordance with mathematical formulµ set out in the Specification. In the construction of voltmeter shown in Fig. 4, the fixed elements 2 and moving elements 1 are so shaped that the gaps between them progressively increase with increasing deflection, so that the dielectric strength of the instrument rises as the voltage increases. In another construction, Fig. 5, suitable for giving angular deflections up to about 270‹, the moving element 1 is of small angular breadth, and the fixed element 2 is of such a form as to give an increasing area of overlap as the deflection increases. Alternatively, the moving element 1 may be in the form of a cylindrical segment, moving in the gap between two fixed plates 2, which may either be in the form of spirals, Fig. 8, or of concentric cylinders of variable axial length, Fig. 9. Instead of spring control, a variable magnetic control of the kind described in Specification 400,654 may be used, in order to obtain constant periodic time and damping over different parts of the scale. The casings, both of the electrostatic voltmeters and of the series condensers, may be filled with air under high pressure or with oil or other liquid of high dielectric strength.
Patent GB-1148213-A (GB)
Title: Improvements in or relating to control mechanism for internal combustion engines andautomatic transmissions
Inventor: ATKINS ALAN JOHN
IPC: F02D11/04
Filed: 1965-09-21
Abstract: 1,148,213. Change-speed control. AUTOMOTIVE PRODUCTS CO. Ltd. 21 Sept., 1966 [21 Sept., 1965], No. 40165/65. Heading F2D. [Also in Division F1] Depression of an I.C. engine throttle pedal 18 beyond its fully open throttle position, as allowed by a pre-loaded spring 42, operates an automatic transmission kick-down device which may comprise an electrical switch 45 actuated by a spring-loaded plunger 46 engageable with a bulkhead-mounted abutment 47.
Patent GB-1214179-A (GB)
Title: Low-pressure gas discharge lamp for producing resonance radiation
IPC: H01J61/68
Filed: 1968-08-22
Abstract: 1,214,179. Discharge lamps; electrode materials. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 22 Aug., 1968 [25 Aug., 1967], No. 40216/68. Heading H1D. The intensity of resonance radiation in a low-pressure gas discharge lamp is increased and the band-width reduced by a collar 6 surrounding the path of a positive-column discharge between electrodes 3 or 4 and located between an atom source 5 containing an element of which the resonance radiation is desired and a window 2. The gas filling is one or more of Ne, A, Kr, Xe, He, at a pressure of not more than 5 mm. Hg. e.g. A at a pressure of 3 mm. Hg. The collar 6 may be of glass or ceramic. The atom source 5 is preferably a sputtering electrode made from a plate, wire gauze or bars formed into a cylinder. Alternatively, the sputtering electrode may be designed in the manner known for storage cathodes, or may be a coil heated by an electric current. Suitable materials are Cu or sintered Ni, W or Mo containing the desired elements or compounds thereof. In an alternative embodiment (Fig. 2, not shown) the cathode 3 and anode 4 are located on the axis of the lamp, the anode being in the form of an apertured disc. A further alternative embodiment (Fig. 3, not shown) contains two atom sources, one for Ca and the other for Mg.
Patent GB-1109481-A (GB)
Title: Flame spraying of powdered materials
Inventor: PENSON HAROLD ARTHUR
IPC: B05B7/14
Filed: 1963-10-11
Abstract: 1,109,481. Coating by flame spraying. BRITISH OXYGEN CO Ltd. 9 Oct., 1964 [11 Oct., 1963], No. 40245/63. Heading B2F. Powdered material is flame sprayed by a burner supplied separately with h.p. oxidising gas, fuel gas and powder carried by an oxidising gas at a lower pressure than the h.p. gas. The apparatus shown comprises a powder dispenser 1 and a burner 2 having a nozzle 21 with three concentric tubes and a combustion chamber both being water cooled. Powder in the dispenser rests on a porous disc 6 and is maintained in a fluidised state by oxygen at 5 p.s.i. supplied through pipe 8 and is drawn up through pipe 14 by oxygen supplied at 60- 80 p.s.i. to an injector 15 before being carried to the inner most tube 22 of the nozzle, the flow 6f powder being regulated by adjustment of the pressure within the dispenser between 2-10 p.s.i. indicated by gauge 19. Propane is supplied through tube 23 of the nozzle and the main oxygen supply (75-95%) to the outer tube 28. at 50-100 p.s.i. supplied from a source 11 at 2000 p.s.i.; pressure reducing valves, flow meters being in the various gas circuits.
Patent GB-409539-A (GB)
Abstract: 409,539. Plugging furnace tapholes. VEREINIGTE STAHLWERKE AKT.- GES., 67, Breitestrasse, D³sseldorf, Germany. July 25, 1933, No. 20930. Convention date, July 25, 1932. Addition to 368,010. [Class 51 (ii).] In the clay gun for plugging furnace tapholes according to the parent Specification, the beam 15 from which the gun 8 is suspended by arms 19, 20, is pivoted to the lower end of a vertical pin 9 carrying a slidable sleeve 10 which is connected by a link 16 to the beam 15 and by a pair of links 14 to members 12 fast on the shaft 2. The latter is rotatable in bearings carried by the swinging framework of the gun mounting and has a crank 3 fitted with rollers 4 engaging the upper and lower surfaces of a guide rail 7 which may be adjusted in inclination by a screwed spindle 6. In operation, the rotation of the shaft 2, as the gun mounting is swung into operative position about the vertical axis 1, effects a downward movement of the sleeve 10 and a consequent tilting of the gun to the required angle. The parallel motion linkwork I .. IV of the parent Specification is modified by connecting the member IV rigidly to the upper end of the pin 9; the linkwork may be adjusted by a screwed spindle 18.
Patent GB-1411418-A (GB)
Title: Signal generators
IPC: H04L27/26
Filed: 1972-09-06
Abstract: 1411418 Voice frequency signal generator; oscillators WESTERN ELECTRIC CO Inc 6 Sept 1972 [7 Sept 1971] 41248/72 Headings H4K and H3T A signal generator includes a frequency determining circuit which comprises a plurality of resistive elements and a plurality of frequency-selecting switches which are arranged in a ladder network such that when any one of said switches is actuated at least two of the resistive elements are operatively connected in series and when any two of said switches are actuated at least one of the resistive elements is operatively connected in series with two of the resistive elements connected in parallel. Such an arrangement is used in one of the T notch filter feedback networks of the signal generator disclosed in U.S. Specification 3,424,870 and two such signal generators are employed in a subscriber's sub-set of the pushbutton, two tone voice frequency signalling type. The arrangement allows 49 different two tone signals to be supplied at the output R, T for signalling to an exchange, 16 produced by the selection of single push-buttons and 33 produced by the selection of pairs of adjacent pushbuttons (horizontally, vertically or diagonally adjacent). As is well known each signal generator produces frequency tones in a frequency band which differs from that of the other and apart from component values the circuitry of the two signal generators is the same. Each signal generator comprises a pair of interconnected transistor oscillators each having a twin- T notch filter feedback network, and as shown the signal generator coupled to the row of buttons is diagrammatically represented as an amplifier 501 having two feedback T notch filters, one comprising resistor R3 and capacitors C1, C2 and the other comprising capacitor C3, resistor R2 and resistor network RN1. The arrangement of the resistors in the ladder network RN1 is such that if any one button is depressed, one of four principal frequencies is produced, and if two adjacent buttons are depressed which are not in the same row, a frequency is produced which is mid-way between two of the principal frequencies. Hence each signal generator can produce seven different frequencies, giving a total of 49 two tone frequency possibilities. For details of the circuitry of amplifiers 501 and 601 reference is directed to U.S. Specification 3,424,870 and the push-button dial DL is of the type disclosed in U.S. Specification 3,479,470. Integrated circuitry is used for the oscillator circuitry. The additional 33 tones may be used for data signalling.
Patent GB-1001975-A (GB)
Title: Improvements in or relating to heat-extracting devices and nuclear fuel element sheaths incorporating same
IPC: F28F1/12
Filed: 1961-11-20
Abstract: 1,001,975. Nuclear reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. Nov. 20, 1961 [Nov. 18, 1960], No. 41418/61. Heading G6C. [Also in Division F4] A sheath for a nuclear fuel element has an outer wall provided with a plurality of fins arranged in a chevron or herring-bone pattern, and at least a part of the fins is inclined to the surface of the wall. The wall 1 comprises fins 2 forming a herring-bone pattern 3. The arrow 4 indicates the general direction of flow for a liquid exchanging heat with the wall 1. Channels 5 are formed between the fins wherein a circulation of liquid is established, the admission of the liquid occurring near the apices 6, and the exit at the fin extremities 7. The extremities 7 are inclined towards the wall. The embodiment illustrated in Fig. 3 consists in folding each fin around its basic generatrix, i.e. that along which it is fixed to the wall, after-having fitted the necessary groove to each fin.
Patent GB-1078419-A (GB)
Title: Novel intermediates useful in the preparation of colchicines, and processes for the preparation thereof
IPC: C07C255/53
Filed: 1964-12-04
Abstract: The invention comprises compounds of formula <FORM:1078419/C2/1> wherein X1, X2 and X3 are alkoxy and R is alkyl (optionally aryl-substituted), and a method of making them by formylating the corresponding trialkoxybenzocycloheptenylpropionic acid ester with a formamide derivative, e.g. the POCl3 complex of HCONMePh or of HCONHMe; derivatives of the aldehyde function of these compounds are also claimed.  Specified are the compound where X1 = X2 = X3 = MeO, R = Me; and its semicarbazone and 2,4-dinitrophenylhydrazone.
Patent GB-1438957-A (GB)
Title: Fluid flow control valves
IPC: F23N1/08
Filed: 1972-09-11
Abstract: 1438957 Valves RADIATION Ltd 31 Aug 1973 [11 Sept 1972] 42103/72 Heading F2V In a valve for controlling the gas supply to a water heater in accordance with the water flow, a permanent magnet 44 actuates a gas control valve 34 when a water-flow responsive member, comprising a permanent magnet 57 mounted in a holder between a number of legs 58 extending from an end plate 59, is lifted sufficiently for the two magnets to repel each other with sufficient force to overcome the adjustable bias of a spring 60. The gas control valve 34 is also under the influence of a diaphragm 43 so that a constant pressure is maintained at the gas outlet (33). A constant water flow is provided by a water governor the domed head of which presses against an apertured or pervious disc 31 to control the flow in response to pressure changes. The skirt of the governor is castellated to provide guidance to the governor. Body part 30 may be made of an aluminium alloy and body part 31 of glass-filled polyphenylene oxide. The permanent magnets are made of axially magnetized anisotropic barium ferrite covered with a thin layer of polytetrafluoroethylene for protection.