baber/WOPTO huggingface dataset:
Patent GB-280238-A (GB)
Title: Manufacture of condensation products from urea, thiourea or their derivatives, and an alcohol or a ketone
IPC: C08G12/02
Filed: 1927-11-07
Abstract: 280,238. I. G. Farbenindustrie Akt.- Ges. Nov. 6, 1926, [Convention date]. Addition to 278,390. Condensation products of alcohols and ketones with urea, thiourea, &c.-Oily or resinous products are obtained by condensing urea, thiourea or a derivative, thereof with an alcohol or ketone or derivative at ordinary temperature or at a raised temperature not exceeding 60‹C. in the presence of a strong acid. The initial oily condensation products may also be transformed at ordinary or raised temperature into more highly polymerized products by the addition of a strong acid. According to the examples, (1) urea is mixed with 1: 3-butyleneglycol in the presence of concentrated sulphuric acid, (2) urea is gently heated with the acetal from glycerine and acetaldehyde whilst gaseous hydrogen chloride is passed through, (3) concentrated sulphuric acid is added to the oily condensation product from urea and diacetin, whereupon a resinous product forms on standing or on gentle heating. The Specification as open to inspection under Sect. 91 (3) (a) refers to 120‹ C. as the optimum temperature. This subject-matter does not appear in the Specification as accepted.
Patent GB-1136253-A (GB)
Title: Improvements in control systems for direct current electric motors
Inventor: PAYNE IVAN SALISBURY
IPC: H02P7/28
Filed: 1965-07-14
Abstract: 1,136,253. Magnetic amplifiers. LANSING BAGNALL Ltd. 12 July, 1966 [14 July, 1965], No. 29898/65. Heading H3B, [Also in Divisions G3, H1 and H2] A transductor, for applying a variable proportion of the pulses from a multi-vibrator and shaping circuit to the firing circuit of a thyristor in circuit with an electric motor, comprises cores 12, 13 separated by air gaps 16, 17 wich a reactance winding 18 around the core 12. Around the core 13 there is a single-turn winding 19 carrying the motor current. In the main air gap 14 there is a movable permanent magnet 22 coupled to a control pedal for the motor. Initially the transductor is fully saturated by the control magnet, thus inhibiting pulses to the thyristor, until displacement of the magnet from the position between poles 15 reduces the saturation and increases the pulse repetition rate. The transductor also tends to be saturated by the winding 19, to prevent the supply of "on" pulses until the motor current decreases to a safe value. The winding 18 is connected across the base and emitter of a transistor and is energized by pulses from the shaping circuit, the arrangement being such that the transistor is cut-off to prevent the application of firing pulses to the thyristor when the impedance of the winding 18 is low due to saturation.
Patent GB-376135-A (GB)
Title: Improvements in slipping couplings for gun-laying mechanism
IPC: F41A27/20
Filed: 1931-10-28
Abstract: 376,135. Securing toothed wheels on shafts. SCHNIEDER ET CIE., 42, Rue d'Anjou, and COMPAGNIE DES FORGES ET ACIERIES DE LA MARINE ET D'HOMECOURT, 12, Rue de la Rochefoucauld, both in Paris. Oct. 28, 1931, No. 29906. Convention date, Nov. 19, 1930. [Class 80 (ii).] Worm gears for laying guns are provided with elastic couplings of the type comprising spring- pressed balls 6 engaging conical seats 7, 8 in the driving and driven members, the seats in the present instance being accommodated partly in the worm wheel 1 loosely mounted on the laying shaft 4 and partly in a member 10 keyed to this shaft, the seats 8 being adapted to slide in the member 10 against the action of springs 13. The arrangement is such that, when an abnormal force emanating from the gun occurs, the coupling yields, and, when this force ceases, the parts return to normal driving position without causing disturbance of the aim. Fig. 6 shows a modified coupling with a double ring of balls engaging a sliding intermediate ring 30, the permissible yielding movement being limited by projections 32, 33 on the worm wheel 1 and member 10 respectively, which engage in a slot 31 in the intermediate ring 30 as shown in Fig. 9.
Patent GB-1189347-A (GB)
Title: High-Temperature Alloy Steel
IPC: C22C38/22
Filed: 1967-06-28
Abstract: 1,189,347. Alloy steels. NIPPON KOKAN K.K. June 28, 1967 [June 28, 1966], No.29910/67. Heading C7A. An alloy steel suitable for use at high temperatures consists, in per cent by weight, of C 0À03-0À15 Si 0À05-1 Mn 0À3-1À2 Cr 5-8 Mo 0À5-1À5 Nb 0À03-0À15 B 0À001-0À012 optionally V 0À05-0À3 Fe and impurities - balance Specified impurities with their maximum permitted proportions are:- Ni 1%, N 0À4%, P 0À035%, S 0À035%, Co 0À25%, Al 0À05%, Ti 0À04%, W 0À25%, Sn 0À04%. Heat treatment may consist of normalizing at 1050‹ - 1150‹ C. and tempering at 750‹ C. and then 700‹ C. Use Boiler tubes.
Patent GB-357797-A (GB)
Title: Improvements in and relating to electric commutating devices
IPC: B60L5/06
Filed: 1930-10-06
Abstract: 357,797. Brush-holders for dynamoelectric machines. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Price, D. R. ; 173, Ocean Street, Lynn, Massachusetts, U.S.A.) Oct. 6, 1930, No. 29925. Convention date, Oct. 5, 1929. [Class 35.] In a contact apparatus of the commutator-andbrush type which as shown may be applied t o a n electric meter 10 use for telemetering p u r - poses the brush 20 is given a combined axial and tangential motion relatively to the commutator 18 in order to equalize wear thereon by being mounted on one arm of a pivoted bell crank 22 the other arm of which is oscillated by a slowly-rotating eccentric driven in unison with one of the final reduction gears of the meter counting train.
Patent GB-967426-A (GB)
Title: Depository apparatus
Inventor: SIMJIAN LUTHER GEORGE
IPC: G07F17/40
Filed: 1963-07-30
Abstract: 967, 426. Weighing apparatus. UNIVERSAL MATCH CORPORATION. July 30, 1963, No. 30146/63. Heading G1W. [Also in Division G4] In an automatic postal machine, Fig. 4, (Division G4), the weighing device for indicating the postage to be paid comprises a platform 21 supported by plunger 25, a projection 68 carried from the platform and having a series of apertures as shown in Fig. 13 which are representative of ounce increments and, as the platform is depressed, successively coact with a light beam, to pulse a photo-electric cell 70. Each pulse causes a set of switch contacts 103, 104 to step-down and make contact with successive stationary bus-bars 120- 125 and an indication is then given of the total fee to be paid for the article. Corresponding coinage is then fed into the machine to step-down switch contacts 112-117 on to the bus-bars so that, when the circuit is completed by a pushbutton 18 to start a controller, the platform 21 is tipped up by a lever operated by the controller, thereby ejecting the article into a receptacle at the rear of the machine. A magnetic clamping collar 44 associated with the plunger 25 permits steadying of the platform when franking the article. The weighting device may employ an electrical load cell instead of a spring-loaded mechanical scale.
Patent GB-770339-A (GB)
Title: Grills for gas cookers
Inventor: MULROY VINCENT HENRY
IPC: F24C15/18
Filed: 1954-10-20
Abstract: 770,339. Grilling stoves. RADIATION, Ltd. Sept. 23, 1955. [Oct. 20, 1954], No. 30153/54. Class 126 The grill burner of a gas cooker is mounted within a semi-cylindrical housing 9, pivoted about a horizontal axis on the cooker, so that the diametral surface of the housing is uppermost and level with the cooker hotplate when the grill is not in use, and the housing forms a grill chamber mainly above the hotplate when turned through 180 degrees. In the position of use, a grill pan 12 slides beneath runners 14 through the cut-away open front of the housing 9. The runners 14 may hold the grill pan in position when the housing is inverted, when a folding handle is provided. A spring-loaded catch 18 and springs 20 on a liner in the compartment into which it is closed hold the housing 9 in either position. The burner 10 and grill frets 11 are mounted in the top of the housing, and a slot in the mixing tube 10a co-operates with an injector nozzle 16 on the splash plate of the cooker.
Patent GB-520357-A (GB)
Title: Improvements in or relating to piezo-electric pick-ups
IPC: H04R17/04
Filed: 1938-10-19
Abstract: 520,357. Gramophone pick-ups. WEBSTER ELECTRIC CO. Oct. 19, 1938, No. 30264. Convention date Jan. 21. [Class 40 (iv)] [Also in Group XL] In a pick-up of the piezo-electric type, the crystal assembly is contained in a chamber formed by two separate housing members of flexible resilient material adapted to be clamped together. The crystal unit, which comprises two plates 30, 31 of Rochelle salt separated by a metal foil 32 and covered on the outside by metal foils 33, 34 which are coated with asphalt lacquer, is supported by resilient members 94, 95 in a chamber 54 formed by two similar members 35, 36 of rubber which are clamped together by a metal casing 82. The rubber members 35, 36 are formed with co-operating grooves in which are located sleeves 100, 101 for the leads to the crystal and further grooves which form bearing surfaces for the horizontal arms of a cruciform needle-carrier. The members 35, 36 are shaped to form a recess 64 adjacent the upper part of the needle-carrier and a clearance 123 is left between the arm carrying the needle and the metal case 82. The vibrations of the needle are transmitted to the crystal unit 29 by extensions. 78, 79 of the arm 66 forming a U-shaped recess in which the unit is resiliently clamped by means of a rubber strip 81. The ends of the sleeves 37, 38 are pinched together and soldered to connectors 104, 105 attached to the metal foils 33, 34. Cotter pins 103 are secured within the sleeves and have the leads soldered to their outer ends. In a modification, Fig. 3 (not shown) the eyes of the pins are within the chamber and the legs of the pins pass through the sleeves and may be inserted in a connecting jack. In alternative connecting arrangements the insulated cores of a twin cable are soldered to the inner ends of the sleeves, Fig. 4 (not shown), or connecting members passing through the sleeves and soldered at their inner ends are formed with screw terminals, Fig. 5 (not shown), or have eyes to which the external connecting'leads are connected and soldered, Fig. 12 (not shown). In the construction shown in Fig. 9, in which the needle is inserted from the top of the casing, the groove 59 extends beyond the top of the metal casing, is provided with a metal lining 121 and has a frusto-conical portion 99 leading to the needle socket.
Patent GB-350862-A (GB)
Title: Manufacture of a stable reduction compound of a vat-dyestuff
IPC: C09B67/28
Filed: 1930-10-09
Abstract: Thioindigo series.-A stable reduction product, having properties similar to those of the products of the parent Specification, is obtained by treating 4 : 7 : 41 : 71 - tetramethyl - 5 : 51 - dichlorthioindigo with an alkali and a reducing agent other than a hydrosulphide, and causing an acid, such as carbonic acid or sulphurous acid, to act on the solution thus obtained.  The reduction process is facilitated by the addition of an alcohol, such as ethyl alcohol.  In an example, the dyestuff is reduced with sodium hydrosulphite solution and caustic soda in the presence of alcohol, and carbon dioxide is introduced into the solution in order to separate the reduction compound.  Specification 6490/07, [Class 2, Acids and salts, Organic &c.], is referred to.
Patent GB-1304479-A (GB)
IPC: G03G15/02
Filed: 1971-07-05
Abstract: 1304479 Electrostatic charging apparatus RICOH KK 5 July 1971 [9 July 1970] 30301/71 Heading G2H A photo-conductive plate 1 is charged by tungsten wires 5 with either positive or negative polarity; the quantity of charge deposited being controlled in accordance with the polarity of the charge to provide uniform charging. Preferably a resistor 8 is included in the positive charging circuit so that the amount of positive charge deposited is less than half the amount of negative charge. Alternatively, the speed at which the plate 1 is fed through the charging station may be varied, or the distance between the plate 1 and wires 5 may be varied.
Patent GB-602644-A (GB)
Title: Adjustable internal gauges
IPC: G01B5/08
Filed: 1945-11-13
Abstract: 602,644. Linear-dimension gauges. MAAG, M. Nov. 13, 1945, No. 30334. Convention date, Nov. 13, 1944. [Class 106 (ii)] The invention relates to gauges for measuring internal diameters, which include an axially displaceable conical member (4, Fig. 2) adapted to move radially disposed gauging pins (3) against the inside wall (8) of the bore, the diameter of which is to be ascertained. In a gauge of this type comprising a plurality of gauging pins which are of circular cross-section over a major part of their respective lengths, each pin being mounted in a corresponding bore in a head-forming part of the gauge so as to be rotatable about its axis in the bore, the outer and inner ends of each pin are formed to respectively engage the bore in the workpiece and the axially -displaceable member each along at least one rectilinear contact line. Each pin 3 may be formed, at its inner end, with a V- shaped groove 7, Fig. 5, so as to form two converging lines of contact with the conical member 4, its outer end being either curved to form a single line contact with the workpiece or flattened at 6 to form two lines of contact. In the latter case the inner end could have single line contact with the member 4. In another embodiment, Fig. 6, both ends of the pins are bevelled. Specification 542,263 is referred to.
Patent GB-1168919-A (GB)
Title: Improvements in or relating to Vacuum Cleaners
IPC: A47L9/00
Filed: 1967-06-30
Abstract: 1,168,919. Vacuum cleaner. ELECTROLUX Ltd. 30 June, 1967 [22 July, 1966], No. 30335/67. Heading A4F. [Also in Division F1] A vacuum cleaner comprising an elongated casing 10, a dust collector, a motorfan unit, suction and exhaust openings in the casing for air conveyed through the vacuum cleaner by the motor-fan unit and transport members 15 for moving the cleaner such that the underside of the casing is at a given distance from a working surface is characterized in that the exhaust opening 16 and an air diffusing device 17 are located at the underside of the casing, the device 17 being arranged to receive air from the exhaust opening and discharge the air to the ambient air surrounding the cleaner. The diffusing device may be provided with a removable filter 22 which may comprise a frame 23 supporting filter material 24 and with foamed plastics strips 25 which provide a seal between the device 17 and the casing 10. The transport members 15 may consist of wheels or of runners in which case the device 17 may be integrally formed with the runners which are provided with outlet openings 18 through which the exhaust air pipes from the device 17 and through which the filter 22 can be removed. The diffusing device which has air deflecting guides (19) (Fig. 3, not shown) is provided with a removable covering member (27) (Fig. 4, not shown) through which a hose or pipe (28) may be attached to the outlet opening 16 by a bayonet type fitting.
Patent GB-936019-A (GB)
Title: Electrically operated indicators or scoring devices for game apparatus
IPC: A63F3/00
Filed: 1961-08-23
Abstract: 936,019. Electric selective signalling systems. S. W. STAMPER. July 11, 1962 [Aug. 23, 1961], No. 30342/61. Drawings to Specification. Class 40 (1). The circuit for indicating remotely the progress of a game of snakes and ladders described in Specification 551,347, which is referred to, is modified so that instead of a rotary switch having to step forwards or backwards whenever a snake or a ladder is encountered control of the indicator is transferred from one bank of the switch to another bank of the switch by an electromagnetic relay circuit, thus reducing the time lag between entering the result of the throw of the die into the circuit and the actual indication of the new state of the game.
Patent GB-820507-A (GB)
Title: High frequency tuning device
Inventor: HUBBARD MERLE R
IPC: H03H5/00
Filed: 1956-10-05
Abstract: 820,507. Resonant lines. COLLINS RADIO CO. Oct. 5, 1956, No. 30461/56. Class 40 (8). A high-frequency timing device comprises first, second, and third conducting plates 10, 12 and 14 and a capacitor C1 connected as shown. Plate 12 acts as an inductance and is adjustably connected by sliding contacts 16, 17 and a conductor 15 to the plate 14 which is capable of acting both as an inductance and a capacitance, and is substantially the same length as plate 12. Figs. 4-7 (not shown) represent an embodiment of the invention in which second and third plates 19, 23 are generally annular with a break in their peripheries, and the three plates are spaced by a solid dielectric.
Patent GB-263997-A (GB)
Title: Improvements in and relating to the construction of quay walls, piers and other marine structures
IPC: E02D27/20
Filed: 1925-12-02
Abstract: 263,997. Saxild, J., and Ingerslev, C. F. A. Dec. 2, 1925. Piers; walls.-In the construction of quay walls, piers and other subaqueous structures, a caisson of reinforced concrete is floated into position and temporarily supported while piles are driven through the bottom of the caisson down to a solid foundation and then secured by grouting and a layer of concrete cast inside the caisson, after which the latter is emptied of water, so that further operations can be carried out. The bottom of the caisson is adapted to permit the piles being driven through it by the provision of membranes without reinforcement and capable of being easily broken by the points of the piles. or by the provision of holes temporarily closed by wooden or other covers. The caisson may be supported on a prepared bed of sand or stone, or, in tidal waters, on a staging built on piles. The caisson 1, Fig. 1, of reinforced concrete, is floated into position over a soft bed 2 and supported on a bed of sand, stone or other material. Piles 3, preferably of reinforced concrete, are driven through holes 4 in the bottom of the caisson. A concrete layer 14 is cast into the bottom of the caisson, after the heads of the piles have been cut off or stripped as required, and a filling 15 is then put in. The holes 4, Fig. 4, are tapered from the upper and lower surfaces of the bottom towards the middle, where a thin membrane 6 of concrete forms a temporary closure strong enough to withstand the water pressure, but easily broken by the points of the piles. The upper taper facilitates the driving of piles at an inclination to the vertical, and the insertion of grouting, while the lower taper prevents the fracture of the surrounding concrete when the membrane 6 is broken. The temporary support for the caisson may consist of a wooden or other staging 7, Fig. 6, on to which the caisson is floated at high tide. Fig. 7 represents a caisson 1, secured by piles 3, forming a sea wall. A filling 9 of rubble, sand &c. is inserted behind the wall after erection.
Patent GB-400420-A (GB)
Title: Improvements in and relating to means for controlling the cooling action in engines with air cooling
IPC: F01P7/02
Filed: 1932-10-31
Abstract: 400,420. Cooling cylinders. YACCO, S. A. F., 44, Avenue de la Grande-ArmÚe, Paris. Oct. 31, 1932, No. 30515. Convention date, Sept. 5, 1932. [Class 7 (ii).] In an air-cooling arrangement, in which air is blown through valved openings c into an engine casing, the proportion of air admitted near the cylinder heads tends to increase as the valve is closed. The application is shown to a radial cylinder engine, and the valve comprises a rotatable plate d having openings, corresponding to the openings c, which each comprise a trapezoidal part A and a rectangular, or triangular, part B, adjacent the head and arranged on either side or both sides of the part A which may be opposite the axes of, or the spaces between, the cylinders. The edges of the openings may be strengthened by connecting tongues k, or an engaging nose j may be provided. A slot e provides access to the sparking plugs. The valve may be operated by Bowden mechanism or the servomotor described in Specification 392,825, [Group XIII], and the control may be by hand or through a thermostat.
Patent GB-618293-A (GB)
Title: Making products of powdered iron or iron alloys
IPC: C22C33/02
Filed: 1946-10-14
Abstract: An iron body is made by compressing iron powder into a self-sustaining compact at a pressure not exceeding 40 tons per sq. in., sintering the compact, then repressing the compact at a pressure of at least 60 tons per square inch followed by a further sintering treatment.  The iron powder used is preferably made by electro-deposition or by the reduction of iron oxide. Such powder contains small quantities of impurities, some of which are dissolved in the iron and others such as oxides or oxysulphides which are not. Preferably all non-iron ingredients other than carbon do not exceed 0.3 per cent to 0.5 per cent by weight, and the undissolved impurities do not exceed 1 per cent by volume.  Carbon may be added up to 0.15 per cent by weight and may be introduced by heating the iron powder to between 1200 DEG F.-1700 DEG F. in a carburizing atmosphere.  The starting powder is annealed to relieve strains due to work-hardening and is cold-pressed at a pressure of from 15-40 tons per square inch to a density of from 5.5 to 6.8.  The compact thus formed is sintered without pressure at from 1600 DEG F. to 2000 DEG F. for a period from twenty minutes to three hours in a non-oxidising atmosphere. After sintering the compact is again cold-pressed at between 60-90 tons per square inch and then again sintered under similar conditions at between 1500 DEG F.-2400 DEG F., after which it is allowed to cool slowly in the non-oxidising atmosphere down to 400 DEG F.-500 DEG F.  The sintering temperature should be at least 100 DEG F. below the melting point of the steel, which varies according to the carbon content.  A band made by the above method may be cold-swaged into the groove of a shell or other projectile.
Patent GB-520452-A (GB)
Title: Improvements in and relating to ventilators
IPC: B63J2/10
Filed: 1938-10-22
Abstract: 520,452. Ventilators. JOHNSTON, N. F., and MARSHALL, J. Oct. 22, 1938, Nos. 30606 and 36281. [Class 137] In an air directing ventilator of the kind comprising a sphere a with a passage b therethrough and rotatable in an annular ring c, the two ends of the Dassage are of different diameter and in the larger end of cup like formation e is arranged a disc valve i adjustable longitudinally to control the air flow through the passage. In Fig. 1, the air issues through the narrower end at high velocity but by reversing the sphere as in Fig. 2, air issues from the larger end of the passage at low velocity and by adjustment of the valve i in its supporting spider g the direction of the issuing air can be varied. A scroll louvre q of helical formation as in Fig. 6, may be provided so arranged that the convolutions may be drawn together by movement of spindle r as described in Specification 396,468.
Patent GB-1183258-A (GB)
Title: The Production of a Polymer having Dihalo-S-Triazinyl Groups Bound Thereto
Inventor: KAY GARTH
IPC: C08G63/91
Filed: 1967-07-03
Abstract: 1,183,258. Dihalo-s-triazinyl cellulose; enzymes. NATIONAL RESEARCH DEVELOPMENT CORP. 18 June, 1968 [3 July, 1967]. No. 30616/67. Headings C3A and C3H. Cellulose is reacted with a cyanuric halide in an organic water-miscible solvent in the presence of water and preferably below 35‹ C. to introduce dihalo-a-triazinyl groups, and an acid or neutral pH is maintained when the reaction is over to reduce the tendency for hydrolysis and cross-linking. Cyanuric chloride is conveniently used with acetone or dioxane and an equal quantity of water as solvent. The pH control may be controlled by acid addition, e.g. acetic acid, or by allowing hydrolysis of excess cyanuric halide. After reaction the pH may be 3-5À5. The starting cellulose is preferably soaked in alkali-containing water. The product may be further reacted with a dyestuff containing an amino group, or with a biologically active substance, e.g. an enzyme such as penicillin amidase.