baber/WOPTO huggingface dataset:
Patent GB-252003-A (GB)
Title: Improvements in electric current converting systems
IPC: H02M7/44
Filed: 1926-05-06
Abstract: 252,003. British Thomson-Houston Co., Ltd., (Assignees of Mittag, A. H.). May 9, 1925, [Convention date]. Vapour apparatus, arrangements of.-An alternating-current load circuit 9 is supplied from the secondary winding 8 of a transformer, the primary 7 of which is divided into two parts oppositely connected through metallic vapour devices 5, 6 to a direct-current supply source 1, 2. The metallic vapour devices 5, 6 are alternately rendered operative to produce an alternating current in the winding 8 by means of starting anodes 12 co-operating with the cathodes 11 and energized by transformers 22 the primary windings of which are alternately connected to a battery 19 by brushes 23, 24 co-operating with the conducting segment 18 of a commutator switch 16. Frequency is determined by the speed of the driving motor 13 of the switch 16, and the main anode current of the metallic vapour devices is commutated by a condenser 26, a reactance 25 being provided in the supply circuit to prevent momentary fluctuations of current during commutation. According to a modification, Fig. 2, control of the vapour devices is effected electrically, the starting anodes 12 being connected through valves 20 to oppositely-connected halves of the secondary winding of a transformer 27, the primary of which is connected through a condenser 31 to the output terminals of the main transformer, frequency being determined by the saturation of the main transformer and by the condenser 31.
Patent GB-549745-A (GB)
Title: Improvements in or relating to blinds
IPC: E06B9/262
Filed: 1941-09-17
Abstract: 549,745. Window blinds. LISLE, U. L. O. Sept. 17, 1941, Nos. 11883/41 and 12079/42. Addition to 534,646. [Class 20 (iii)] In a folding light-tight blind 1 of the kind described in the parent Specification, in which a plurality of laths 2 extend across the blind at the upper part of which a ventilating aperture is provided screened by a flexible panel 7, the latter may be arranged in front of the blind and may have one or more apertures 8 to provide for the passage of air. The upper edge of the panel is attached to a ledge 9 projecting from the blind supporting means. The side edges of the blind are guided and restrained in channels 14, 15 at each side of the window, these channels diminishing in depth towards the bottom of the window to urge the end lath against the window frame. In Fig. 7, the blind is provided with an extension 17 having at its end a weighted lath 18 which moves inwardly along inclined surfaces on blocks 19, lath 16 also being weighted.
Patent GB-1330038-A (GB)
Title: Anthraquinone dyestuffs which are sparingly soluable in water and their manufacture and use
Inventor: DIAMANTOGLOU M
IPC: D06P3/36
Filed: 1971-04-28
Abstract: 1330038 Anthraquinone dyestuffs CIBA GEIGY AG 28 April 1971 [28 April 1970] 11905/71 Heading C4P Anthraquinone dyes which are free from acidic groups which dissociate in water have the general formula wherein R 1  and R 2  independently denote H or C 1 -C 5 -alkyl; X is H or halogen; Y 1  and Y 2  independently represent C 1 -C 5  alkylene which is optionally substituted by a hydroxyl group or a C 1 -C 5  alkoxy group; m and n are 1 or 2 and R 3  is an optionally substituted aliphatic or aromatic hydrocarbon radical or a C 1 -C 5  alkylamino, a cycloalkylamino or an optionally ring substituted arylamino group. The benzene ring A may also be substituted by halogen alkyl or alkoxy. The dyes may be prepared by oxidizing a compound of formula to the corresponding quinone imine compound and reacting it with a compound of formula Alternatively a disulphonated compound of formula may be reacted with a compound of Formula III above to give a monosulphonated anthraquinone and the sulphonic acid group then split off. Dyes where R 1  and R 2  are alkyl may also be prepared by acylating the corresponding anthraquinone compound containing the radical with an acylating agent introducing the radical R 3 -CO-. The dyes give blue shades on textile materials of synthetic fibres, e.g. polyesters, cellulose acetate, and polyamides and may also be used for colouring lacquers, oils and waxes.
Patent GB-1065606-A (GB)
Title: Novel 5-(3-alkoxy-propylidene)-dibenzocycloheptatriene derivatives and a process for the preparation thereof
IPC: C07D211/22
Filed: 1964-06-26
Abstract: Novel compounds of formula <FORM:1065606/C2/1> wherein A represents an ethylene group which may be substituted by one or more alkyl groups, and Hal represents a 10- or 11-halogen substituent, and wherein the broken line denotes that the group attached thereby is optional, are prepared by reacting a 10- or 11-halodibenzo [a,d]cyclohepta[1,4,6]trien - 5 - one with an appropriate Grignard reagent, hydrolysing the product and dehydrating the 10- or 11 - halo - 5 - hydroxy - 5 - alkoxyalkyl - dibenzo [a,d]cyclohepta[1,4,6]triene formed.
Patent GB-527813-A (GB)
Title: Improvements in friction pivots
IPC: E05D7/08
Filed: 1939-04-21
Abstract: 527,813. Friction pivots. PARKER, WINDER & ACHURCH, Ltd., and BATES, W. E. April 21, 1939, No. 11989. [Class 65 (ii)] In a friction pivot of the kind comprising two attachment plates, one fixed to a stationary member, the other to a pivoting member, and having a pivot pin projecting from one plate through a hole in the other, a spring being mounted on the pin to draw the plates towards each other, the pin 22 has a flange 21, one side of which is drawn into frictional contact with the plate 10 mounted on the stationary member 11. The flange may be at right angles to the plate 17 on the pivoting member 18, and may fit in a recess 12 in the plate 10. The spring 24 is fixed on the pivot by a cross pin 27.
Patent GB-273441-A (GB)
Title: A toilet appliance for washing the back
IPC: A47K7/02
Filed: 1926-05-10
Abstract: 273,441. Dykes, D. B. C., and Jones, E. M. S. May 10, 1926. Holders with clamping-devices for mops. - An appliance for washing the back comprises a handle A, Figs. II and III, with a hole at one end to receive the end of a headed spike B which is adapted to be passed through a sponge or loofah C. A ring or similarshaped member E is pivotally mounted on the handle A whereby a face flannel or wash glove N is held in place to cover one half of the sponge. The ring may be split to facilitate attachment of the flannel. In the construction shown in Fig. IV, the appliance is formed of a single piece of cane, one part of which is bent to hold a sponge within the bend, another part E being ring-shaped to hold the face flannel against the sponge.
Patent GB-395122-A (GB)
Title: Improvements in automatic starting mechanism for internal combustion engines
Filed: 1932-04-27
Abstract: 395,122. Starting prime movers. ECLIPSE MACHINE CO., Elmira, New York, U.S.A. April 27, 1932, No. 12068. Convention date, April 28, 1931. [Class 38 (iv).] In a starting system for an internal-combustion engine in which a starting motor SM is connected to a battery 10 through a switch 1 on energization of a solenoid 26 connected in series with a switch 31, 32 which is opened by electromagnetic means when the engine starts, but is prevented from opening, while the engine is being cranked, by a winding 18 in series with the starting motor, a heat-responsive element 56 is provided for short-circuiting the winding 18 in the event of an overload on the starting motor. The contact 32 is mounted on a spring 33 and is normally held in engagement with the contact 31. When the engine starts normally, the load on the starting motor is relieved and the current in the coil 18 diminishes, permitting a voltage coil 46 to attract a plunger 44 and move a roller 37 into engagement with a weight 36 at the end of the spring 33, which is thereupon moved to separate the contacts 31, 32 and open the circuit of the solenoid 26. A generator winding 47 maintains the plunger 44 in its lower position as long as the engine is running. If the engine fails to start within a reasonable time, the heating of the element 56 causes the short-circuiting of the winding 18, whereupon the plunger 44 is drawn down by the voltage coil 46 and the circuit of the starting motor is opened by the deenergization of the solenoid 26.
Patent GB-837063-A (GB)
Title: Improvements in or relating to high frequency furnaces
IPC: H05B6/80
Filed: 1958-04-16
Abstract: 837,063. Dielectric heating. PATELHOLD PATENTVERWERTUNGS- & ELEKTROHOLDING A. G. April 16, 1958 [April 16, 1957], No. 12080/58. Class 39(3) A high frequency furnace where the material to be treated or heated e.g. food is located in a hollow chamber bounded by metal walls into which H.F. electromagnetic radiation is introduced e.g. by a wave guide L, means G2 are arranged in the chamber adjacent a wall D at which the radiation is introduced for varying the polarization direction of the H.F. radiation in order to reduce standing waves in the chamber and a second such means G1 is disposed adjacent an opposite wall B of the chamber. Thus a polarization grid G1 is arranged parallel to the wall B at a distance therefrom of a quarter of a wave length of the radiation or of an odd multiple of this value, the parallel conductors of this grid having a direction displaced by 45 degrees with respect to the polarization direction EO of the radiation. The direction of polarization E1 of the energy reflected from the wall B is then displaced by 90 degrees with respect to that EO of the entering radiation. When the radiation enters the chamber through a wave guide L, a polarization grid GO is arranged at the end of the wave guide with parallel conductors directed perpendicular to the direction of polarization of the introduced radiation, in order to prevent entry of radiation reflected from the wall B into the waveguide; but the grid GO is not required when the H.F. radiation is introduced by a coupling loop or by a dipole. The second polarization grid G2 is arranged parallel to the wall D through which the radiation is introduced at a distance of a quarter of a wave length or an odd multiple of this number therefrom, the conductors of the grid having a direction at 45 degrees to the polarization direction EO of the entering radiation i.e. parallel or perpendicular to the conductors of the grid G1. The grid G2 leaves the opening for the introduction of the radiation free. The chamber may be of quadrangular or of cylindrical cross-section. The polarization grid G1 may be spaced at one eighth of a wave length from the wall B, and then the reflected wave has circular polarization. The distance from the wall of at least one polarization grid may be variable. The grid may comprise parallel strips of material having a high dielectric constant and may support the material -under treatment. The H.F. energy may be fed into the chamber at several points from one or more H.F. generators. Thus a second wave guide may be provided in the wall B opposite the wave guide L to introduce a radiation with a direction of polarization perpendicular to the direction EO of the radiation entering by wave guide L, and the supply may come from independent generators giving different frequencies.
Patent GB-818419-A (GB)
Title: Improvements in silicon rectifiers and methods of manufacturing silicon elements therefor
IPC: H01L23/42
Filed: 1956-04-20
Abstract: A silicon wafer less than 10 mils. thick, which has been derived from a single crystal, is heated to above 750 DEG  C. for use in rectifiers (see Group XXXVI).  In one embodiment a wafer 10-12 mils. thick is cut from a single crystal of silicon and its surfaces lapped.  The wafer is heated for 16 hours at 1200 DEG  C. in an atmosphere of nitrogen and phosphorous pentaride to produce an N-type conductivity surface layer.  During this process the minority carrier lifetime is reduced from 20 to less than 0.1 microseconds.  It is partially restored by reducing the wafer thickness to 4 1/2 mils by removal of material from one face and reheating to 1100 DEG  C. for 2 hours.  During the latter heating boron is diffused into the body from a coating previously deposited by decomposition of boron trichloride.  Specifications 774,270 and 782,664 [Group XXXVI], are referred to.
Patent GB-1253969-A (GB)
Title: Vehicle braking systems
Inventor: MORTIMER FRANK RADCLIFFE
IPC: B60T8/74
Filed: 1968-03-13
Abstract: 1,253,969. Brakes. DUNLOP HOLDINGS Ltd. 10 March, 1969 [13 March, 1968], No. 12151/68. Heading F2F. An hydraulic braking system for light aircraft which permits the low-pressure pedal-operated supply to take up the brake clearance before a low-capacity, high-pressure supply is admitted, comprises a control valve 3 which prevents feed from the high-pressure source 4 until the pressure from one or other of dual master cylinders 1, 2 reaches a predetermined level, and shuttle-type change-over valves 14, 15 which allow passage of the higher pressure to pipes 18, 19 feeding independent brakes. Spring-loaded valves 24, 25 serve to prevent fluid-flow into pipes 20, 21 from the high-pressure source 4 until the manually generated pressure reaches a predetermined pressure as detected by spring- loaded pistons 52, 53 acting through mechanisms 50, 51. A conventional inertia-type anti-skid device may be incorporated, (Fig. 2, not shown).
Patent GB-947329-A (GB)
Title: Process for printing textile materials of acrylonitrile polymers or polyamides
Inventor: MCQUEEN SIMON THOMSON
Filed: 1961-04-05
Abstract: Textile materials of polyamides or acrylonitrile polymers, including copolymers containing at least 85% acrylonitrile, are printed by applying a print paste containing a water-soluble reactive dye and thiourea.  The dyes may be of the nitro, azo, phthalocyanine series and may be metal free or contain metal in complex formation.  The paste suitably contains 4-10% thiourea and also an acid or a substance which develops acidity on steaming; with polyacrylonitrile materials oxalic or tartaric acid is preferred while with polyamide materials acetic acid or an ammonium salt is preferred.  Other known adjurants may also be present, those specified being sodium m-nitrobenzene, sulphonate, ethanol, thiodiglycol sodium chlorate, phenol and the thickening agents starch, ethyl cellulose, locust bean gum, tragacanth, oil-in-water or water-in-oil emulsions and especially Nafka crystal gum.  The paste may be applied by handblock, screen or roller printing techniques.  The prints may be fixed by steaming at atmospheric pressure for 10-30 minutes.  Examples are given. Specifications 209,723, 298,494, 460,224, 733,471, 740,533, 751,997, 772,030, 774,925, 775,308, 780,591, 781,930, 785,120, 785,222, 802,198, 805,562, 812,957, 826,405, 828,353, 834,304, 836,248, 838,335, 838,340, 842,933, 859,989 and 921,425 are referred to.
Patent GB-784687-A (GB)
Title: Improvements in or relating to lifeboats
Inventor: FLEMING IVAN RUPERT
IPC: B63B3/00
Filed: 1955-04-28
Abstract: 784,687. Ships' lifeboats. FLEMING & CO., Ltd., I. R. April 13, 1956 [April 28, 1955], No. 12229/55. Class 113. A lifeboat has both its ends of substantially the same shape and a keel-bar which, below the hull of the boat, is deeper at the stern than at the stem so as to compensate for loss of draught or increased buoyancy at the stern and ensure that the propeller will be effectively immersed even when the boat is in a light condition. The keel-bar or main frame 11 may be tapered from the stern to the stem, or as in Fig. 1, it may have parallel upper and lower edges and be set at an inclined position so that under the bottom 10a of the boat it tapers from stern to stem. The sides 10 may be pressed from metal or moulded from laminated fibre glass or other plastic material, each side being shaped on or with the same or a similar mould, die or template, the two sides then being secured at or adjacent the longitudinal centre line thereof.
Patent GB-184238-A (GB)
Title: Improvements in the making of leading-in wires for electric incandescent lamps and for similar purposes
IPC: H01J5/46
Filed: 1921-04-30
Abstract: 184,238. Thompson, W. P., (Vereinigte Gl³hlampen-und Elektrizitõts Akt.-Ges.). April 30, 1921. Wire for leading-in wires for electric lamps, X-ray tubes &c. is so formed as to prevent air leaking into the bulbs along the grooves formed in the wire during the drawing operation. For this purpose, the wire may be ground smooth or the grooves may be given a spiral shape either by turning the die while drawing or by twisting the wire. In the latter case, the wire is passed between rolls to flatten it and obliterate portions of the grooves. The flattened portion of the wire may be graduated in thickness, the portion in the middle being the thinnest, and that adjoining the cylindrical portion of the wire of intermediate thickness.
Patent GB-500274-A (GB)
Title: Improvements in or relating to photo-phonographic apparatus
IPC: G11B7/00
Filed: 1937-04-30
Abstract: 500,274. Optical sound-recording. RADIO CORPORATION OF AMERICA. April 30, 1937, No. 12414. Void. Convention date, May 29, 1936. [Class 40 (ii)] The Specification as open to inspection under Sect. 91 describes an optical sound recording apparatus comprising a mask 12, Fig. 1, and a pair of shutters 24, 25 controlled by the envelope current from an amplifier rectifier 6 for producing a double-hump sound track with "ground-noise " maskings similar to the apparatus described in Specification 494,114, and in addition describes extensions or additions to the main aperture of the mask 12 adapted to co-operate with prisms 18, 19 to throw a monitoring beam on a screen 20. The additional or extension aperture or apertures may take several forms as shown at M in Fig. 7, and may co-operate with one or both shutters 24, 25.
Patent GB-217014-A (GB)
Title: An improved anchor
IPC: B63B21/44
Filed: 1923-05-09
Abstract: 217,014. Raymond, M. J. May 9, 1923. Anchors.-The forked palms C and and the crown B are made in one forging with a central tapered hole of hexagonal or other suitable section. The end of the shank A of counterpart cross-section is passed through this hole and the extruding end is peened over and welded to the crown.
Patent GB-316638-A (GB)
Title: Improvements in processes for de-lustreing cellulose acetate silk and other materials consisting wholly or partly of cellulose acetate
IPC: D06M13/402
Filed: 1928-04-28
Abstract: 316,638. Silver Springs Bleaching & Dyeing Co., Ltd., and Hall, A. J. April 28, 1928. Yarns, treating with liquids, gases, and vapours. -The lustre and transparency of cellulose acetate silk is reduced by treatment with ethyl oxalate or other ester of an aliphatic acid and with ammonia either as gas or in solution so as to deposit within the material ethyl oxamide &c.
Patent GB-542939-A (GB)
Title: Improvements in the treatment of rubber latex
IPC: C08C1/08
Filed: 1940-08-01
Abstract: 542,939. Coagulating rubber latex. WALSH, C. L., and NEWMAN, A. A. Aug. 1, 1940, No. 12470. [Class 70] Rubber latex is treated to yield a paste-like product which may be dried and which with water containing ammonia or alkali will reconstitute a latex, but becomes irreversible on trituration and pressing. The latex is mixed with a colloid consisting of pectin or pectates, alginic acid or its salts, gelatinous substances extracted from seaweeds or fibre-producing plants such as laminariae, flax, hemp, sisal, phormium or coconut plants which yield mucilages such as locust bean or those of the order cassiae, amorphalli caselpinae, poncianae &c. and is then coagulated by addition of acetic or formic acid. The paste-like product may be partially-dried. If the latex is allowed to cream before coagulation, the cream may be separated and dried with additional colloid, if necessary to maintain reversibility, and the rubber remaining in the serum may be separated by acidifying, yielding a reversible product.
Patent GB-786845-A (GB)
Title: Fluid spring
IPC: B61F5/10
Filed: 1956-04-24
Abstract: 786,845. Pneumatic springs. GOODYEAR TIRE & RUBBER CO. April 24, 1956 [Oct. 24, 1955], No. 12486/56. Class 108(3) A pneumatic spring comprises a generally tubular flexible member 34 between two opposed spaced supports 26, 29, and having at least one open end terminating in a reinforced head 35 having a seat thereon co-operating with a corresponding seat of the support 26 in such manner that the seats are forced into sealing engagement with each other upon pressurizing the member 34, so as to maintain the sealing engagement without the use of auxiliary clamping means. In the construction shown in Fig. 2, the support 29 forms an intermediate member between two similar springs 34. The seat on each support member (Fig. 6) is formed by two annular sections 39, 41, of different respective inclination to the axis of the members 34. The adjacent beaded end of the member 34 is formed with two correspondingly inclined seats. The seat 41 may be formed with circumferentially extending ribs (not shown). The support may be formed with an annular ridge 42 which serves to retain the member 34 before it has been inflated. In a modified construction (Fig. 1, not shown) the support 29 is dispensed with, there being a single member 34 surrounded at its diameter midway between the supports 21, 26, by a rigid ring which may have a covering of rubber. This ring is of such a diameter as to divide the member 34, when it is under pressure, into two interconnected sections. Conical rubber buffers (Fig. 5, not shown) may be mounted respectively on the supports 21, 26, and extending axially inwards, to engage one another on extreme deflection of the spring. Where it is necessary to mount a spring in a space which has more length than width, a series of springs may be mounted in line and connected by a common air conduit (Fig. 3, not shown). As shown in Fig. 2, the supports 21, 26, are circular in cross section and are formed by rolling or stamping. They may alternatively be of elongated shape in cross-section (Fig. 9, not shown). A ball-joint connection may be provided between the load applying members 1, 2, of the spring and their respective supports 21, 26, (Fig. 10, not shown). In the spring shown in Fig. 8, the member 34 is rendered substantially inextensible by the use of peripherally extending reinforcing wires (mot shown). On relative deflection between the members 1, 2, the member 34 is thus caused progressively to engage the upper support member 50, which is of axially elongated form. The lower support member 56 is formed with an annular groove 57 adjacent the bead-receiving seat 39, 41, in order to facilitate the assembly of the beaded end of the member 34 before inflation of the spring.
Patent GB-127572-A (GB)
Title: Improvements in Apparatus for Feeding Internal Combustion Engines with Fuel.
Inventor: GARNIER LEONCE
IPC: F02M37/02
Filed: 1919-05-17
Abstract: 127,572. Garnier, L. May 28, 1918, [Convention date]. Vacuum apparatus.-Vacuum fuel-feed apparatus comprises a vessel divided into upper and lower compartments R, R' separated. by a flap valve H, the lower compartment communicating at V with the carburettor float chamber, and the upper through B with the main fuel tank and through an orifice D and pipe A with the engine induction pipe. The orifice D is formed in the wall of a tube T carried by a float F, the tube carrying a valve P for closing the passage A<1> and being provided in its wall with a second orifice 0 for registering, when the float is raised, with an aperture O<1> to admit atmospheric pressure to the compartment R. The tube is prevented from rotating by a pin N and slot M. The compartment R' is open to the atmosphere at L.
Patent GB-1454741-A (GB)
Title: Means for measuring the axle load of a vehicle
IPC: G01G19/12
Filed: 1974-03-21
Abstract: 1454741 Measuring axle loads electrically A S E A AB 21 March 1974 [22 March 1973]  12528/74 Heading G1N The load on an axle of a vehicle is measured by a single strain gauge 5 for each wheel assembly 3, located between a brake ring 4 and the wheels 3, or by two diametrically-opposite strain gauges 6. The gauges may be located in a recess in the axle, or are welded or bonded to the axle.