baber/WOPTO huggingface dataset:
Patent GB-787366-A (GB)
Title: Improvements in or relating to power supply equipment for synchronous motors
Inventor: MASON FREDERICK PERCIVAL
IPC: G05F1/12
Filed: 1955-11-22
Abstract: 787,366. Control of A.C. motors. CREED & CO., Ltd. Nov. 22, 1955, No. 33365/55. Class 38 (3). A synchronous motor 3 is supplied from a source 1 of stable frequency through an amplifier 2 which is provided from transformer 5 with a positive feedback voltage proportional to the motor current, whilst transformer 9 delivers a negative feedback proportional to the output voltage of the amplifier. When the motor is stationary the feedback voltages are substantially balanced, but, as the motor gains speed, the positive feedback decreases and the negative feedback is increased so that the combined effect is to reduce the input voltage of the amplifier. By suitable proportioning of the feedback voltages, the amplifier output voltage may be maintained substantially constant despite variations of the motor current, whereby the voltage applied to the motor is prevented from increasing prohibitively as the motor accelerates. In a modification, the transformer 9 is replaced by a potentiometer and the transformer 5 by an impedance in series with the motor, Fig. 2 (not shown).
Patent GB-1002660-A (GB)
Title: Improvements in or relating to dry-release transfer material
Inventor: REVELL CHARLES THOMAS
IPC: B44C1/17
Filed: 1963-08-23
Abstract: A cellulosic non-film-forming ink for printing indicia on transfers comprises a composition based on an ester or ether of cellulose, e.g. nitrocellulose or ethyl cellulose, an oil modified alkyd resin, a pigment, solvents, and a plasticizer. In an example, the composition includes: ...Parts ...by weight .Carbon black... .. ...10 .Nitrocellulose... .. ...30 .Oil-modified alkyd resin... ...10 .Maleic anhydride glycerol con-.. .densate... .. .. ...20 .Phthalate plasticizer... ...10 .Ethylene glycol mono ethyl ether.. .acetate... .. .. ...75 .Diacetone alcohol... .. ...50 The printed sheets are allowed to dry for 4-6 hours at room temperature.
Patent GB-192554-A (GB)
Title: Improvements in apparatus for filtering, cooling, humidifying or otherwise treating air or gas with liquid
IPC: B01D47/08
Filed: 1921-12-12
Abstract: 192,554. Cleworth, Wheal, & Co., Ltd., and Parkinson, G. H. Dec. 12, 1921. Impeller blades for screw fans.-A disc 7 is built up of sectors formed from expanded metal. The sectors are arranged so that all the distorted edges of the metal slope downwardly, which involves placing some sectors with the one side of the metal sheet from which they cut uppermost, and others with the reverse side uppermost. When the disc, thus formed, is mounted on a rotating spindle in a casing, it acts as a fan to induce air upwardly through the casing. Several spaced discs 7 may be superposed on a common spindle 4, and then multiple discs may be of graduallyincreasing diameter so that their peripheries lie on the surface of a cone. The conical surface may be bounded by a sheet of metal 9.
Patent GB-282092-A (GB)
Title: Means for automatically compensating the voltage drop in alternating current transmission lines
IPC: G05F1/24
Filed: 1927-12-10
Abstract: 282,092. Siemens - Schuckertwerke Akt.-Ges., (Assignees of Siemens- Schuckertwerke Ges.). Dec. 11, 1926, [Convention date]. Regulation, automatic.-In regulating an a.c. generator to give constant voltage at a consuming point A, B, the regulating circuit containing the voltage coil 5 of the regulator includes an auxiliary voltage controlled by the current in the transmission line R, S, T, the phase and magnitude of which are such that the voltage diagram of the regulating circuit is geometrically similar to that of the transmission line. In the polyphase arrangement of Fig. 1, the auxiliary voltage is compounded of suitable proportions of the secondary voltages' of each of two current transformers 3, 4 in two phases of the transmission line by means of resistances 7, 9. In the arrangement shown in Fig. 4, applicable also to a single-phase line, the magnitude and phase of the auxiliary voltage derived from a single line transformer 3 is adjusted by a variable resistance 11 and a variable inductance or capacity 10.
Patent GB-159496-A (GB)
Title: Improvements in tractors
IPC: B62D55/116
Filed: 1920-12-01
Abstract: 159,496. Christie, W. Feb. 25, 1920, [Contention date]. Endless-track vehicles. -A motor vehicle is fitted with a pair of road wheels between the driving and steering wheels and adapted to be depressed so as to raise the steering or driving wheels from the ground by means operated from the driving gear, the wheels being adapted for the fitting of endless tracks. The intermediate wheels 20 are carried on cranks on a shaft 23 fitted with a bull gear 22 in mesh with a pinion 25 driven by chain and reduction gearing from a shaft 30. The shaft 30 is driven, through a plate clutch, from the driving-gear 12, the clutch being thrown into gear from a pedal 48 through links 45, 47 and cranked lever 46. A stop 49 on the bull gear engages an arm 46<1> on the crank lever 46 and limits the depression of the wheels 20. The upward movement of these wheels is limited by an arm on the shaft 23 engaging a removable stop on the main frame. The front wheels are mounted for steering; when the tracks 50 are employed the steering gear is rendered inoperative and the front wheels are held under spring pressure to tension the tracks.
Patent GB-1041314-A (GB)
Title: Improvements relating to the manufacture of semi-conductor devices
Inventor: DURHAM ERIC WALTER
IPC: H01L21/316
Filed: 1964-08-20
Abstract: In the production of semi-conductor devices an oxide layer is formed on a semi-conductor body by an electrolytic process, a photo-resist pattern is formed on the oxide layer, and oxide removed from unprotected areas to leave an oxide pattern suitable for masking or protecting the semi-conductor surface. Gallium arsenide and gallium phosphide may be thus processed to avoid the use of thermal oxidation. In an embodiment p-type gallium arsenide is anodized in a bath containing boric acid and sodium tetraborate using a current density of 10 mA/cm2 at room temperature.  A photo resist pattern is formed and dilute hydrochloric acid used to remove exposed oxide.  A tin/indium alloy is evaporated on to the exposed parts of the water and alloyed to form an array of discrete n-type regions.  These regions may be interconnected by strips of conductive or resistive material laid down on the oxide layer and making ohmic contact with the alloy regions.  "Nichrome" (Trade Mark) is a suitable interconnecting material.
Patent GB-1158863-A (GB)
Title: Improvements in Electro-Optical Direction Finders
IPC: G01S3/787
Filed: 1966-07-29
Abstract: 1,158,863. Photo-electric direction finders. SOC. ANON DE TELECOMMUNICATIONS. 29 July, 1966 [6 Aug., 1965], No. 34089/66. Heading H4D. Relates to photo-electric direction finders in which the frequency modulation produced by a rotating reticle 5 composed of alternate obturating and non-obturating sectors is rotated in the focal plane of the objective 2. According to the present invention a graded optical filter 11 is added near that focal plane, the opacity is a minimum at the centre of the filter and increases progressively outwards therefrom, a second system incorporating a similar reticle 15 driven at the same speed as, and in phase with, reticle 5 is provided, and the outputs of photo-cells 9 and 17 are differentially combined before demodulation in known circuit 10. It is stated that background interference from objects near the light source whose direction is to be ascertained, is reduced. The second system may incorporate an obturator 19 and the field of view of the second system may be made the larger, Fig. 2 (not shown).
Patent GB-212643-A (GB)
Title: Improvements in shock-absorbers
IPC: B64C25/60
Filed: 1922-12-14
Abstract: 212,643. Fairey Aviation Co., Ltd., and Fairey, C. R. Dec. 14, 1922. Dash-pots.-In shock absorbers of the kind provided with an air vessel in communication with the lower end of the dash-pot cylinder which is provided with an apertured piston, the only communication between the two ends of the cylinder is by way of the apertures of the piston, the effective area and number of such apertures being controlled by a valve adapted to be adjusted automatically or at will. Preferably the air vessel is of such a height as to reach approximately to the height of the liquid in the cylinder and of a diameter not substantially greater than that of the cylinder, whilst the volumes of air maintained above the piston and in the air vessel are substantially equal at equal pressures. As shown, the piston 14 is hollow, carries a pair of cup leathers 32, and is provided with apertures 19 which are controlled by a valve 20 carried by an inner piston rod 22 adapted to rotate automatically or at will through a lever 23. The air vessel 25 communicates by means of a port 24 with the cylinder 11 of the shock absorber which is intended particularly for use in aircraft.
Patent GB-521632-A (GB)
Title: Cooling of pistons for fluid-pressure engines
IPC: F01M1/06
Filed: 1938-11-24
Abstract: 521,632. Engine pistons. COVENTRY CLIMAX ENGINES, Ltd., HATHAWAY, L., and MOORE, A. W. Nov. 24, 1938, No. 34145. [Class 122 (i)] A spiral wall 23 forms a tortuous lubricating and cooling passage in the crown of the piston, which is screwed on to the body and contains a gudgeon pin. Oil is forced along a bore 19 in the connecting-rod, or a pipe carried by the rod, into a groove in the gudgeon-pin bearing, thence through the interior of the pin, and by passages 22 into the spiral passage. The oil leaves this passage at the middle, passing by a bore 24 into the piston body, and finally passing out through escape holes in a piston groove.
Patent GB-429690-A (GB)
Title: Improvements in or relating to television apparatus
IPC: H04N3/08
Filed: 1933-12-05
Abstract: 429,690. Television. MARCONI'SWIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, DOWSETT, H. M., 47, Drayton Gardens, Winchmore Hill, and WALKER, L. E. Q., 98, Wymering Mansions, Maida Vale, all in London. Dec. 5, 1933, No. 34206. [Class 40 (iii)] In a scanning system using a ring or partial ring 4 of fixed mirrors, two reflectors 3, 5 rotate together, and a stationary reflecting surface 2, associated with one reflector 3 always presents the same angle to incident light, and a reflecting-surface 6 associated with the other reflector 5 always presents the same angle to emergent light. The reflector 3 reflects incident light to the mirror ring from which it is reflected to the reflector 5 from which it is reflected to a screen or other area to be scanned. The rotating reflectors are right prisms with their hypotenuse faces at 45‹ to the axis 7 of rotation.
Patent GB-328244-A (GB)
Title: Improvements relating to mattresses
IPC: A47C23/057
Filed: 1928-11-21
Abstract: 328,244. Marsden, A., and Marsden, G. R. Nov. 21, 1928. Mattresses.-In mattresses comprising a frame, springs carried by transverse supports j, Figs. 1 and 12, and one or more longitudinal supplementary supports a, the supports a coact with intermediate points of the supports j and are vertically adljustable as a whole to prevent or take up sagging. The frame d may be of the same height as the springs, the supports j being secured to the lower edges of the frame, or the supports j may have cranked ends of the same height as the springs. The supports j may rest on the supports a as in Fig. 1 or may be adjustably suspended from, or pass through holes or slots in, the supports a. Noise deadening material or springs may be inserted between the supports a, j. Bolts b, Fig. 1, allow vertical adjustment of the supports a. The supports j may be strained wires and may be adjustably attached at their ends to the frame d by a hinged flap or by a horizontally-sliding angle-piece which may also be vertically adjustable. The supports a may themselves be supported by one or more adjustable transverse bars above or below them and joined to them at the crossing points. The supports j may be divided at the centre as in Fig. 12, two central supports a and two side supports a' being adjusted vertically to prevent the mattress sagging and horizontally by bolts b<1> to strain the supports j. A double mattress with the tension of the halves independently adjustable is thus obtained. In this modification, the side supports a<1> may be omitted, the ends of the supports j being secured to the frame d by bolts allowing vertical adjustment.
Patent GB-1118365-A (GB)
Title: Variable thrust rocket motor
Inventor: NOVOTNY RAYMOND JOHN
IPC: F02K9/72
Filed: 1966-07-29
Abstract: 1,118,365. Rocket motors. THIOKOL CHEMICAL CORP. 29 July, 1966, No. 34282/66. Heading F3A. [Also in Division F1] A rocket motor comprises a casing having a discharge nozzle at the rear end thereof, a body of solid propellant being located in the rearward portion of the easing adjacent the nozzle, and a container of liquid propellant being located in the casing. A conduit is provided through which liquid propellant may flow into contact with the solid propellant, the conduit being an injector tube which is embedded in the solid propellant and has holes in the walls thereof so that as the solid propellant burns, the holes are progressively uncovered so as to increase the flow of liquid propellant through the conduit. The rocket motor shown comprises a casing 32 which may be of wound glass fibre, the forward part of the casing constituting a liquid propellant container 12 which may be pressurized by means of inert gas under pressure from container 10. The rearward part of the casing 32 is lined with an ablative liner 36, for example of glass fibre reinforced phenol formaldehyde resin, the liner being shaped so as to form a convergent-divergent nozzle, having a throat 48. A liquid propellant supply tube 46 extends axially within the casing 32 from the propellant container 12, the tube being comprised of a first portion 64, a second portion 62 and a third portion 60, the tube portions being formed with discharge orifices 47 and being releasably interconnected. A body of solid propellant material 44 is formed within the liner 36 so as to embed the supply tube 46, the solid propellant body being shaped so as to provide a combustion space 52, into which the portion 60 of the tube assembly 46 projects, also a discharge nozzle 50, the throat of which is provided by an insert 54 of ablative material moulded into the solid propellant 44. In operation, the liquid propellant such as liquid oxidizer hydrogen peroxide or nitrogen tetroxide is pressurized by inert gas such as helium from the tank 10 and discharges through the openings 47 in the tube portion 60 into the combustion chamber 52 where it reacts with the solid propellant 44 which may be solid fuel such as hydrocarbon polymer cured in situ. As combustion proceeds, the solid fuel is consumed and the ablative member 54 is ejected through the nozzle 50. Also further openings 47 are uncovered so that the supply of liquid oxidizer automatically increases. When the connection between the tube portions 62, 60 is exposed to the heat of combustion, the connection releases and the tube portion 60 is ejected through the nozzle. At a later stage the connection between the tube portions 64, 62 releases and the tube portion 62 is then ejected. The discharge orifices 47 in the tube portions 64, 62, 60 are initially closed by a low melting point metal which melts when subjected to the heat of combustion. Alternatively, the solid propellant may be oxidizer such as an inorganic oxidizer and the liquid propellant may be fuel such as hydrazine.
Patent GB-506896-A (GB)
Title: Apparatus for the electrical precipitation of suspended particles from gaseous fluids
IPC: B03C3/40
Filed: 1938-11-25
Abstract: 506,896. Electrical precipitation apparatus. LODGE-COTTRELL, Ltd. (Siemens-Lurgi-Cottrell-Elektrofilter-Ges. fiir Forschung und Patentverwertung) Nov. 25, 1938, No. 34428. [Class 39 (i)] The gas-treating cham ber 1 is provided with flat vanes 2... 6 staggered and so disposed in two rows . that the edges of the vanes 5, 6 are directed to the flat faces of the vanes 2, 3, 4 and uice..versa. The rows of vanes are oppo. sitely charged from a direct current pulsating current or alternating current source. The edges of the vanes may be serrated and the faces formed with dust collecting slots or pockets:
Patent GB-1343709-A (GB)
Title: Pigmetns useful in electrophotography
IPC: C09B69/02
Filed: 1971-07-22
Abstract: 1343709 Preparing pigments EASTMAN KODAK CO 22 July 1971 [24 July 1970] 34477/71 Heading C4P [Also in Division G2] Pigments are prepared by reacting in an aqueous medium a water-soluble acidic dyestuff or a salt thereof having an acidity such that a saturated aqueous solution thereof has a pH less than 5 at 20‹ C. with a water-soluble basic dyestuff or a salt thereof having a basicity such that a saturated aqueous solution thereof has a pH greater than 8 at 20‹ C. and then treating the precipitate formed with an acidic mordant, e.g. phospho-tungstic or phosphomolybdic acids or mixtures thereof. The acidic dyes which preferably contain at least two sulphonic or carboxylic acid groups per molecule and the basic dyes which preferably contain two amino groups per molecule may be of the nitro, azo, arylmethane, methine, acridine, thiazole, azine, anthraquinone, or phthalocyanine series. The pigments are used in electrophotographic developer compositions.
Patent GB-1089814-A (GB)
Title: N-sulphanilylcytosine compounds
IPC: C07D239/56
Filed: 1966-08-01
Abstract: The invention comprises compounds of the formula <FORM:1089814/C2/1> in which R represents a C1- 6 alkyl, C2- 6 alkenyl, phenyl-C1- 6 alkyl or C1- 6-(alkoxyalkyl); pharmaceutically-acceptable alkali metal salts thereof; and their preparation by (a) hydrolysis of an acylated N-sulphanilylcytosine having the formula <FORM:1089814/C2/2> in which Acyl represents an acyl radical or (b) reduction of an N-(p-nitrobenzene-sulphonyl)-cytosine of the formula <FORM:1089814/C2/3>  Acylated N-sulphanilylcytosines of the Formula II are prepared by (a) reacting S-methyl-4-thiouracil with a compound of the formula RX, wherein X represents a halogen atom and reacting the substituted S-methyl-4-thiouracil obtained of the formula <FORM:1089814/C2/4> with an N4-acylsulphanilamide of the formula <FORM:1089814/C2/5> or (b) reacting a substituted cystosine of the formula <FORM:1089814/C2/6> with an acylated sulphanilyl chloride of the formula <FORM:1089814/C2/7>  N - (p - Nitrobenzenesulphonyl) - cytosines of the Formula XI are prepared by reacting p-nitrobenzenesulphonyl chloride with a substituted cytosine of the Formula IX in the presence of a base.  Substituted cytosines of the Formula IX are prepared by reacting a substituted aminopropionitrile of the formula R-NH-CH2-CH2-CN with cyanic acid to give a substituted 1-(2-cyanoethyl)urea of the formula <FORM:1089814/C2/8> reacting this compound with a strong base under anhydrous conditions to give a substituted 5,6-dihydrocytosine of the formula <FORM:1089814/C2/9> converting this compound to an acid-addition salt by reaction with a strong acid under anhydrous conditions, dehydrogenating this salt by reaction with bromine at a temperature above 100 DEG  C., and neutralizing the reaction product with a base, or (b) reacting a -cyano-b -ethoxy - N - (carbethoxy) - acrylamide with an amine of the formula RNH2 to produce a substituted 5-cyanouracil of the formula <FORM:1089814/C2/100> hydrolysing and decarboxylating this compound to give a substituted uracil of the formula <FORM:1089814/C2/111> reacting this compound with phosphorus pentasulphide to give the corresponding substituted thiouracil, and reacting this compound with liquid ammonia.
Patent GB-429938-A (GB)
Title: Improved means for use when drawing-off liquids from containers
IPC: B67D1/08
Filed: 1933-12-08
Abstract: 429,938. Tapping. BARNES, F. J. T., 184, Breakfast Creek Road, Newstead, Brisbane, Australia. Dec. 8, 1933, Nos. 34593/33 and 2061/34. [Class 21] Relates to means for use in drawing off liquids from containers. A metal bush 1 receives a cork 4 or other stopper at its inner end, and has a resilient bushing 7 within its outer end to receive a tap stem 12 or the like. The resilient bushing 7 has an annular recess 17, which when the cork 4 is removed, is expanded by the pressure within the container to cause the bushing to press tightly against the tap stem 12 and bush 1. The bushing 7 may be keyed to the bush 1 by ribs 18 engaging grooves 20 in the bush, and ribs 19 may be provided within the bushing to engage grooves 21 in the tap stem. Longitudinal outward movement of the tap stem may be prevented by providing a recess 26 with cutaway portions 27 in the bushing 1 and lugs 28 on the tap stem.
Patent GB-779072-A (GB)
Title: Apparatus for use in adhesively affixing together ends of braid or the like
Inventor: NEALE GEORGE
IPC: B31B50/62
Filed: 1954-11-30
Abstract: 779,072. Straps and bands. MONK (ELASTICS), Ltd., W. July 19, 1955 [Nov. 30,1954], No. 34595/54. Class 109. A machine for joining together by adhesive the ends of braid, ribbon, tape, &c. is characterized by a plurality of clamps 3 mounted for travelling movement along an endless path 4. Each clamp 3 is adapted to open automatically due to the curvature of the path 4 over the pulleys 5, 6 and close automatically on the straight runs of the path 4 to receive the lapped ends of braid to be joined, placed manually thereon and hold them together for a sufficient period to allow the adhesive to take effect before releasing the joined ends. The clamps 3 may be of resilient strip metal. An adhesive applicator 15 may be operated in timed relationship with the movement of the clamps 3 for movement into and out of a container 16 of adhesive, and this may be effected by a trip mechanism 17, 20, 21, operated by the belt 4. There may also be provided a collector 23 for the formed loops of braid &c., consisting of radial arms 24 angularly adjustable about a vertical axis.
Patent GB-1025332-A (GB)
Title: Punched card reader
Inventor: WHITTLE RICHARD GEORGE
Filed: 1961-09-27
Abstract: 1,025,332. Statistical apparatus. ROTAX Ltd. Sept. 19, 1962 [Sept. 27, 1961], No. 34620/61. Heading G4M. In a punched - card reader, a first contact block 19 is fixed relative to a frame 4 and a second contact block 20 is fixed to a pair of posts 17, 18 which are slidable through block 19. In operation, a card 34 is sensed by moving handle 6 in an anticlockwise direction whereupon a lever 40 coupled to shaft 5 moves rod 38 to the left, this in turn rotating link 36 which allows card guide 33 to descend and thus draw card 34 into the reading position. Further movement of handle 6 moves block 20 nearer to block 19. An apertured plate 24, which is slidable relative to block 20 by means of spring - loaded bolts 26, first comes into contact with the card 34, and then spring-loaded pins 23 are urged against the card or through the perforations therein to make contact with the pins of block 19. The card is removed by rotating handle 6 in the opposite direction. When card 34 is in the correct reading position lever 40 is disengaged from shaft 5 by means of a spring- loaded catch 42. The extent of movement of block 20 relative to block 19 is limited by a cam 45 which co-operates with a stop 46.