baber/WOPTO huggingface dataset:
Patent GB-960459-A (GB)
Title: Production of hydroxylammonium salts
Inventor: JOCKERS KURT
IPC: B01J23/96
Filed: 1961-07-27
Abstract: Hydroxylammonium salts are produced by suspending a platinum catalyst in a solution consisting essentially of water and a strong mineral acid, introducing a mixture of hydrogen and nitric oxide into the suspension, separating the resultant solution of the hydroxyl ammonium salt from said catalyst when said acid is substantially used up and repeating said process steps at least once, wherein at any stage of the process after any residual nitric oxide and hydrogen gas mixture has been at least partly displaced by nitric oxide or an inert gas e.g. nitrogen or carbon dioxide, the catalyst suspension is gassed in a closed zone with nitric oxide, or a mixture of nitric oxide and an inert gas, said mixture containing at least 10% by volume of nitric oxide, until the pressure in the gas space above said suspension remains constant when the gassing is stopped.  The temperature at which the activation is effected is preferably that at which the reaction of nitric oxide and hydrogen is carried out e.g. 45 DEG  C. In examples a mixture of nitric oxide and hydrogen is introduced into a stirred suspension of a platinum on graphite catalyst in 20% sulphuric acid until the acid is used up; then nitric oxide is passed in to displace part of the supernatant gas mixture so that the gas space contains a 20 : 70% volume mixture of hydrogen and nitric oxide whereupon the catalyst suspension is stirred until the pressure is constant.  Thereafter the catalyst is filtered off, added to aqueous sulphuric acid and re-used. In comparative experiments the activation step is omitted with consequential fall in conversion of nitric oxide.  Phosphoric and hydrochloric acids may be used in like manner and other forms of platinum catalyst are mentioned.  The preparation of the hydroxylamine salts may be carried out in continuous fashion and the activation step may then be effected on catalyst suspension withdrawn from the system or on catalyst introduced with fresh acid into the solution. Specifications 667,870 and 712,467 are referred to.
Patent GB-481206-A (GB)
Title: Improvements in the sizing of paper
IPC: D21H17/37
Filed: 1936-10-07
Abstract: 481,206. Sizing paper. JOHNSON, G. W. (I. G. Farbenindustrie Akt.-Ges.) Oct. 7, 1936, Nos. 27254 and 30505. [Class 96] Paper is sized in the pulp by the use of watersoluble polymeric amides of the acrylic acid series in addition to resin and/or wax. Suitable amides are polymeric acrylic acid amide, alpha-methyl-acrylic acid and its homologues and polymerization products derived from the monomeric amides and other compounds capable of being polymerized under the same conditions. The use of these substances enables the proportion of normal sizing agents to be reduced. Examples are given of the use of polymeric acrylic acid amide with (1) oxidized montan wax and aluminium sulphate ; (2) colophony and aluminium sulphate ; and (3) colophony, sodium carbonate, and aluminium sulphate. In an example in the second Provisional Specification, hydrogenated montan wax is used.
Patent GB-472511-A (GB)
Title: Improvements in annular members such as vehicle wheel rims and the manufacture thereof
IPC: B21D53/30
Filed: 1936-10-07
Abstract: 472,511. Making wheel-rims. KELSEYHAYES WHEEL CO. Oct. 7, 1936, No. 27256. Convention date, Oct. 28, 1935. [Classes 83 (ii) and 83 (iv)] In a machine for forming vehicle wheel rims from annular blanks, rotatable dies 13, 14 are moved axially to flange the blank A positioned under rings 13<1>, and, while the end pressure is maintained, a roll 10 is moved transversely to corrage the blank. The blank is afterwards passed between rollers 16<1> and rolled to its finished shape.
Patent GB-318641-A (GB)
Title: Improvements in or relating to photo-electric cells
IPC: H01G9/20
Filed: 1929-09-07
Abstract: 318,641. Arcturus Radio Tube Co., (Assignees of Ruben, S.). Sept. 8, 1928, [Convention date]. Light - sensitive cells. - Photo - electric condenser cells comprise a plurality of light - sensitive electrodes separated by a dielectric such as glycerine or other substance having a high specific inductive capacity, such as castor oil or ethyl alcohol. The adjacent surfaces of the electrodes have a layer of non-porous crystalline material, such as fused cuprous oxide; electrodes of selenium or molybdenum sulphide may also be employed. The glass envelope. 1, Fig. 1, is filled with glycerine and contains two copper electrodes 2, 3, arranged as in Fig. 2, the opposing electrode surfaces having a layer of fused cuprous oxide 2a, 3a. The cell is connected in series with a suitable a.c. generator G across a resistance R, which is connected across the input to an amplifying valve V.
Patent GB-1393033-A (GB)
Title: Process and apparatus for manufacturing a gas by partial  combustion
IPC: C01B3/22
Filed: 1972-06-12
Abstract: 1393033 Combustible gas SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 12 June 1972 [14 June 1971] 27270/72 Heading C5E A gas containing H 2  and CO is made by partially combusting a hydrocarbon-based fuel, removing soot particles from the gaseous product by washing with water, agglomerating the soot in the wash water with added binder oil and removing the agglomerates from the water, combining the agglomerates with fuel oil at a pressure above 1 kg./cm.<SP>2</SP> and at a temperature above 100‹ C. and supplying the resultant mixture, as fuel, to the partial combustion step above.
Patent GB-1501939-A (GB)
Title: Apparatus for feeding objects to a point of use
IPC: B07C5/02
Filed: 1975-06-27
Abstract: 1501939 Endless conveyers GUNSON'S SORTEX (MINERAL & AUTOMATION) Ltd 27 May 1976 [27 June 1975] 27295/75 Heading B8A Objects such as pieces of mineral ore are passed from a hopper 10 along a vibrated tray 11 to a vibrated feed tray 14 from which the objects pass through a shoot 35 into six grooves (33, 34) formed on the periphery of a rotary drum 20, Fig. 3 (not shown), the drum 20 being in contact with and thus driven by an endless belt 21, the objects being pressed into the substantially vertically extending run 27 of the belt 21 due to centrifugal force, thereby forming six parallel rows of objects on the substantially horizontally extending run 28 of the belt 21. Each such row passes beneath a respective examination apparatus 37 to determine whether the objects have, or have not, a predetermined characteristic or characteristics, each such apparatus 37 being associated with an ejector 41 which determines whether the objects pass to a shoot 42 or else to a shoot 43. The tray 14 is formed with six grooves corresponding to the grooves (33, 34). The endless belt 21, instead of contacting the drum 20, may be disposed closely adjacent thereto, in which case the drum 20 will be separately driven. Guide plates 36 which are provided above the belt run 28 maintain the rows of objects on that run. The belt 21 is driven by roller 25.
Patent GB-849451-A (GB)
Title: Improvements relating to a method of bonding together bodies of polyamide resins
IPC: C08J5/12
Filed: 1956-09-06
Abstract: Polyamide resin bodies are laminated by subjecting the surfaces of the bodies to be joined, either successively or simultaneously, to a softening treatment by an alcoholic solution of a polyamide and a polyisocyanate cross-linking agent, and joining the surfaces so treated.  Specified polyamides for use in the solutions are copolymers of hexamethylene diammonium adipate, hexamethylene diammonium sebacate and E-aminocaproic acid.  Specified polyisocyanates are 2,4-tolylene diisocyanate, p,p1-diphenyl methane diisocyanate and p,p1,p11-triphenyl methane triisocyanate.  The polyamide bodies may be in the form of sheets, slabs, fibres or fabrics and the binding agents may be applied by immersion, brushing or rolling.  In the Examples, a solution in aqueous methanol, formic acid odichlorobenzene and methylene chloride of 2,4-tolylene diisocyanate and a polyamide made from hexamethylene diammonium adipate, hexamethylene diammonium sebacate and E-aminocaproic acid is applied to the surface of two bodies of polyhexamethylene diammonium adipate which are joined together at room temperature.
Patent GB-896717-A (GB)
Title: Semiconductor diode
IPC: H01L21/00
Filed: 1960-08-08
Abstract: 896,717. Semi-conductor rectifiers. BENDIX CORPORATION. Aug. 8,1960 [Aug. 26, 1959], No. 27438/60. Class 37. In a semi-conductor diode, Sb is diffused into a wafer 2 of N-type Ge from one side to produce an N+ zone 4 to which a metallic ohmic contact 5 is secured. A portion 7 of In alloy is alloyed into the N-type side 3 of the wafer to form a rectifying junction 8 therein. The device is etched and further processed in known manner. Specification 892,028 is referred to.
Patent GB-174679-A (GB)
Title: Improvements in apparatus for measuring or indicating the density of water in a steamboiler or the density of other liquids in evaporating plants
IPC: G01N9/26
Filed: 1920-09-28
Abstract: 174,679. Porter, W. H., and Spensley, J. W. Sept. 28, 1920. Specific-gravity estimating-apparatus.-Apparatus for indicating the specific-gravity of water in steam boiler or of liquid in an evaporating plant comprises two gauge-tubes A, B, the tube B being the ordinary water-level gauge communicating at its upper end through the connection a<2> with the steam space, and at its lower end through the connection a' with the water space just below the low-water level. The tube A communicates through the connection a<2> with the steam space, and through the connection a<3> with a tube a extending down inside the boiler to a point near the bottom thereof, and is provided with means such as a condenser D for maintain ing a supply of fresh water in the gauge A and tube a. The difference between the heights of the liquid columns in the tubes A, B is a measure of the density of the liquid in the boiler and is measured by an indicator C, which can be moved along a threaded spindle. The upper end a<4> of the tube a may extend into the steam space. The arrangement of the tube a within the boiler maintains the water in the gauge-tube A at substantially the boiler temperature. The tube a may alternatively be outside the boiler, in which case it is surrounded by a steam or hot-water jacket. Instead of using two gauge-tubes, a single tube may be employed which is first filled with fresh water as described, and then blown through and allowed to fill with boiler water.
Patent GB-1387749-A (GB)
Title: Circuit for generating a current substantially equal to an input current
IPC: G03B7/08
Filed: 1972-06-13
Abstract: 1387749 Photo-detector circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 13 June 1972 [16 June 1971] 27576/72 Heading G1A [Also in Divisions G2, H1 and H3] In a circuit for generating over a wide current range, a current substantially equal to an input current, derived e.g. from photo-diode P, Fig.1, the input current tends to produce a difference between the currents at the emitter of a first transistor T1 of a first conductivity type and an electrode of a diode D1, the other electrode of which is connected to the base of the transistor T1; the currents supplied to the diode D1 and collector of the transistor T1 are provided by a transistor circuit which comprises a second  transistor T2 of the opposite conductivity type, the base of which is controlled in accordance with the voltage produced at the collector of the first transistor T 1. The second transistor T2 has a plurality of collectors, a first one C2 of which supplies the current to the diode D1, and a second one Cl of which supplies the current to the collector of the first transistor T1; the base current of the second transistor T2 is produced by a current amplifying transistor circuit which comprises at least a third transistor T3 of the first conductivity type, the output current being  derived from a third collector C3 of the second transistor T2 or from the collector of a fourth transistor T7 of the first conductivity type the base of which is connected to the base of the first transistor T1. In this embodiment the collectors C1-3 of transistor T2, which is of the lateral type, are of equal area and so pass equal currents, and the diode D1 comprises a transistor similar to transistor Tl with base and collector strapped. In a second embodiment the transistor T2, Fig.2, has four collectors, the collector C2 being of double the area of each of the other collectors, and a diode D2 is shunted across the base to emitter  path of transistor T 1. The transistor T2 possesses a fourth collector C4 equal in area to that of each of the collectors C1, C3, and this collector is connected to the base of transistor T2; in addition the collector of transistor T 1 is coupled to the base of transistor T3 via the transistors T4, T5, a small reverse bias being applied to the emitter of transistor T5. The Specification includes details of a construction of this embodiment comprising an integrated circuit Fig.3 (not shown) [see Division H 1]. In a modification of the arrangement of Fig. 1 the photo-diode (P) Fig.4 (not shown) is in series in the emitter circuit of the first transistor T1 instead of the cathode circuit of the diode D1 and the first and third transistors Tl, T3, are coupled via a further PNP transistor T6. The arrangement is such that the current source, i.e. photo-diode P operates at substantially zero output voltage.
Patent GB-507722-A (GB)
Title: Improvements in or relating to the manufacture of cellulose derivatives
IPC: C08B15/06
Filed: 1938-09-22
Abstract: 507,722. Cellulose derivatives; morpholine compounds. BRITISH CELANESE, Ltd. Sept. 22, 1938, No. 27643. Convention date, Sept. 29, 1937. [Classes 2 (ii) and 2 (iii)] Cellulose organic derivatives are stabilized by treating them while in a finely divided or dispersed form with a water-insoluble non- resinous morpholine compound. The treatment imparts stability against the deteriorating influence of light, heat or industrial gases. The treated substances including yarns, films, and other articles made of them are more resistant to fading or colour change when dyed, e,g. with water - insoluble amino - anthraquinone dyes. Morpholine derivatives specified include phenylene dimorpholine, phenylamino morpholine, phenyl morpholine; and p-hydroxyphenyl morpholine. Morpholine may be made by treating diethanolamine with sulphuric acid and may then be reacted with alkyl, aryl, or alkylaryl compounds which couple by replacement of the hydrogen attached to nitrogen in the morpholine molecule. The derivatives may also be made by reacting ##<1>-dichloro-diethyl ether with the amine compound it is desired to have coupled with the morpholine group. The cellulose derivative may be an acetate, formate propionate, butyrate or other ester, or a methyl, ethyl, benzyl, or other ether. Cellulose esters may be. made in presence of sulphuric acid, phosphoric acid, hydrochloric acid, or zinc chloride, as catalyst. Esterification may be effected by a solution or suspension method. When a solution method is used, water is added at the end of the reaction 'to remove residual anhydride, and the mixture may be allowed to ripen. The catalyst is then neutralized and the cellulose ester is precipitated. During precipitation the ester may be treated with hypochlorite. The ester may be obtained in finely divided form by, vigorously beating the ester solution during precipitation, or by extruding the solution through fine orifices into the precipitating agent, or by forcing the ester explosively into the precipitating bath by means of steam. The precipitated ester may be treated with a solution or suspension of a morpholine compound preferably at elevated temperature. The morpholine compound may be dispersed in an aqueous medium which may also contain a mono- or poly-hydric alcohol: The cellulose derivative may be stabilized while it is in solution in acetone or suspended, e.g. in benzene. The morpholine compound may be added to a ripening solution of a cellulose ester or it may be present in the precipitating bath. The stabilized cellulose derivatives may be washed, dried, dissolved, and extruded or cast to form filaments or films. The Specification as open to inspection under Sect. 91 comprises also the stabilization of cellulose nitrate. This subject-matter does not appear in the Specification as accepted.
Patent GB-1079313-A (GB)
Title: Room temperature laser
Inventor: BROOM RONALD FRANCIS JOHNSTON
IPC: H03K3/30
Filed: 1964-07-04
Abstract: 1,079,313. Transistor oscillators. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 1, 1965 [July 4, 1964], No. 27661/64. Heading H3T. [Also in Divisions H1 and H2] A semi-conductor laser pumping source comprises a capacitor which is repeatedly discharged through the laser by means of a mechanical contact (see Division H1). The transistor multivibrator circuit which provides the capacitor charging current and the pulses for the electromagnet of one embodiment is as shown in Fig. 2. In a second embodiment wherein the mechanical contact is a diaphragm attached to the moving coil element of an acoustic transducer a transistor oscillator and rectifier shown in Fig. 7 is used to generate a D.C. voltage to charge the capacitors through the 39 k./ohm resistor. The contacts are closed by pulses derived from a transistor blocking oscillator, Fig. 8 (not shown), two Zener diodes being arranged back-to-back in the base-emitter circuit.
Patent GB-1154615-A (GB)
Title: Fluid Control Valve.
IPC: B60T15/02
Filed: 1966-06-21
Abstract: 1,154,615. Valves; fluid-pressure brakes. WAGNER ELECTRIC CORP. 21 June, 1966 [23 Oct., 1965], No. 27731/66. Headings F2F and F2V. The push-pull actuated valve is intended for connecting an emergency or parking portion of a brake chamber (not shown) alternatively with a pressure source through a motor port 13 and inlet 9, or venting the chamber portion through the port 13 and exhaust port 16. The brake chamber has a second or service portion connected to the source for normal operation of the brakes, whilst the emergency portion includes resiliently biased means to mechanically actuate the service portion. When the chamber emergency portion is connected with the source the resiliently urged means is disabled and when the chamber portion is exhausted the said means is actuated to simulate emergency energization of the brakes. The valve affords the operator a "feel" of the braking effort and modulates this effort according to the operator-applied force. As shown, the valve comprises a pushpull actuator 30 which is fast with a hollow stepped piston valve member 21, 22. The piston has three stepped portions 23, 24, 25 of increasing diameter sealed to the housing 2, 3 by sealing rings 17, 18, 28. The piston houses a spring-biased disc valve 38 seating in the " out " position shown on a seat 36 in the piston, and in the " in " position on the exhaust seat 15. The actuator stem 29 has a seal 31 co-operating with a bore 6, whereby, in the "out" position, the right-hand end of the piston is vented to atmosphere through a port 33. The areas A1 to A5 are arranged so that A4 is greater than A3 or A5, and the difference between A3 and A2 is equal to or greater than A5. In the OUT position shown a holding force F1 corresponding to inlet pressure on A4-A3 keeps the valve in position. On actuating the valve this holding force is replaced by a biasing force F2 sufficient to move the valve to the IN position, as inlet pressure goes through a passage 10 to the right of the piston. When valve 38 closes the exhaust 16 and opens port 13 to the inlet through the piston, a holding force F3 is established corresponding to the substantially equal pressures at inlet and outlet on A3-A2 in opposition to A5. When the reverse actuation takes place, F3 is replaced by a differential reaction force opposing the actuation and corresponding to the isolated pressure at the inlet on A2-A1. This force increases as the outlet pressure falls and when overcome by the actuator, the valve moves to OUT position. In another embodiment, a double spool valve 81, seating alternately on the piston and on the exhaust port, is carried by the piston.
Patent GB-935062-A (GB)
Title: Improved latch mechanism
IPC: E05C9/04
Filed: 1962-07-19
Abstract: 935,062. Vehicle door latches and bolts. FORD MOTOR CO. Ltd. July 19, 1962 [Sept. 14, 1961], No. 27747/62. Class 44. A vehicle door latch and bolt means has a common operable means to first unbolt bolts 29 at top and bottom of the door, and then by a further movement to unlatch the latch 15 in the middle of the door. Fig. 1 shows the bolted position which has been effected by counterclockwise rotation of a handle on a squared shaft 36 to a position in which a member 31 thereon abuts a side flange 14 of the casing. The member 31 is coupled to a rotary member 23 operating the bolt rods 28 by a link 33 which, as shown in the said Figure, is past the dead-centre whereby the bolts cannot be levered open by a ply bar, or the like. A first clockwise rotation of the shaft 36 to the position of Fig. 2 causes the bolts 29 to be withdrawn so that only a subsequent further clockwise rotation is required to withdraw the latch 15 against the action of a spring 18, as shown in Fig. 3. Release of the handle causes the spring 18 to return the latch to the position of Fig. 2, in which position the door may be latched by merely pushing it shut. The door may then be bolted as required by a counterclockwise rotation to the position of Fig. 1, in which position it may be secured by raising a slide bar 47 so that a crossprojection 48 thereon prevents the shaft 36 being rotated clockwise. The bar 47 may be operated manually from inside the vehicle or by a lever moved by a cylinder lock operated externally.
Patent GB-187235-A (GB)
Title: Improvements in sparking plugs for motors
IPC: H01T13/46
Filed: 1922-10-13
Abstract: 187,235. Bichler, C., Hugues, J., and Marseille, L. Oct. 15, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Sparking-plugs.-Between the insulation 2 and casing 7 is interposed a metal sleeve 4 secured over plastic washers on the shoulders of the insulator. Another plastic joint 8 is placed between the sleeve and the casing. A resilient mass electrode 12, Fig. 2, is seated in a groove in the inner end of the casing.
Patent GB-936177-A (GB)
Title: Improvements in or relating to the manufacture of containers and other hollow articles from synthetic thermoplastic materials
IPC: B29C41/08
Filed: 1962-07-19
Abstract: 936,177. Moulding hollow articles. PLASTOMATIC Ltd. July 19, 1962 [Dec. 7, 1961], No. 27854/62. Class 87(2). Hollow articles are made by spraying synthetic thermoplastic material in powder, granular or liquid form on to the inside wall of a heated mould 1, open at the bottom, any material not adhering to the wall dropping into a funnel 11 and thence into a vibrating trough 8 to be returned to the spraying means. The mould 1 is slowly rotated by an electric motor 3, and heated by a regulatable gas burner 13, which is mounted on spring loaded rollers 15 bearing on the mould. The material is supplied by a fan or pump 9 to a spraying pipe 6 which has a plurality of nozzles, which may direct material at particular areas requiring reinforcement. Alternatively powdered material may be sprayed by a propellor-like rotor or a rotating disc, moving axially inside the mould and delivering powder by centrifugal force. The mould may be heated electrically or by hot fluid circulation, either uniformly or otherwise, and the equipment may have a heat-insulated housing. Articles having layers of different colours or different materials, such as polyethylene, polystyrene and soft polyvinyl chloride, may be made.