baber/WOPTO huggingface dataset:
Patent GB-1113920-A (GB)
Title: An improved laser unit
Inventor: WILLMOTT KENNETH NASH KNIGHT
IPC: H01S5/024
Filed: 1967-04-18
Abstract: 1,113,920. Semi-conductor lasers. STANDARD TELEPHONES & CABLES Ltd. 18 April, 1967, No. 17767/67. Headings H1C and H1K. A laser unit comprises a semi-conductor laser die in a sealed chamber. A gallium arsenide laser die 4 is held between raised sections 2 of copper members 1 coated with layers of indium 3 and a glass hollow member 5 completely surrounds the die and is sealed to the members 1 by means of indium washers 6. The members 1 are normally cylindrical in crosssection but may be square or rectangular. Similarly the transparent member 5 and washers 6 may be cylindrical, hollow, square or hollow rectangular. The various parts of the unit are pressure welded together. The laser unit may be packed into closely packed arrays.
Patent GB-674569-A (GB)
Title: A collecting machine for cut crops, especially grass or the like
IPC: A01D43/077
Filed: 1950-07-15
Abstract: 674,569. Hay-making machines. CLARK, J. July 26, 1950 [July 15, 1950], No. 17768/50. Class 6(iii) Cut crops such as grass are lifted by being subjected to an airflow of at least 1,500 feet per minute at the inlet 10 of a conduit 7 leading to a fan 6 driven from a tractor power take-off shaft and provided with rotor blades widely spaced from each other and sloped slightly rearwardly from root to tip relatively to the direction of rotation. As shown, the machine is mounted on a mower and the crop is carried along a conduit 13 and is discharged into a cylindrical container 26 of reticulated material, the bottom of the container opening into a cart (not shown). The fan creates an airflow speed at the inlet of about 6,000 feet per minute enabling the machine to collect a wide variety of crops and the cross-sectional area of the inlet 10 is about 130 to 140 per cent of the cross sectional area of the loose bulk of cut crop at the inlet. The inlet 10 is adjustable and for lifting previously cut crops the mower which is driven from a land wheel is removed and replaced by metal fingers or alternatively the mower blades are covered by a metal sheath. When the mower is directly mounted on the tractor the fan is mounted on a frame attached to the tractor. When making silage the fan is provided with means for tearing or lacerating the crop. The conduit 13 may discharge into a cyclone of large diameter and short vertical height. The machine may be used in conjunction with a rake extending throughout the length of the orifice.
Patent GB-129994-A (GB)
Title: Improvements in Coke Ovens and the like.
IPC: C10B5/02
Filed: 1919-07-16
Abstract: 129,994. Soc. de Fours Ó Coke et d'Entreprises Industrielles. July 16, 1918, [Convention date]. Coke ovens.-In a vertical-flued regenerative coke oven in which the directions of flow of the heating-gases is reversed in groups of flues along the heating-wall, the flues in the two halves of each group are .connected to regenerator compartments under adjacent ovens. In the construction shown, there are two groups of flues in each heating-wall, one for the left hand, and the other for the right hand half of the oven, and the connexions are so arranged that direction of flow of the heating-gases is symmetrical for the two halves. The regenerator compartments beneath each oven are equal in number to the half-groups of flues, and so connected therewith that the air for combustion in and the products of combustion from the half group of flues 5, 7 respectively pass through regenerator compartments beneath ovens on the opposite sides of the heating-wall. By this arrangement all the compartments beneath an oven function similarly, i.e. air is passing through all the compartments during one period of operation, and combustion products during the other. The compartments are connected with the waste-gas flue 22, and the air inlet, by four conduits running along the base of the regenerator tunnel and terminating at different points.
Patent GB-286537-A (GB)
Title: Improved means for preventing dazzling from vehicle headlamps and the like
IPC: F21V11/16
Filed: 1927-07-05
Abstract: 286,537. Grace, L. U. July 5, 1927. Lantern screens; mounting electric lamps in lanterns.-In a vehicle or like lamp, an electric lamp bulb is mounted at the centre of a number of radially arranged plane fins a, the bulb holder h being situated close to the front glass. The fins may be given a matt finish, or they may be coated with colouring matter to make them non- reflecting. The holder h is carried by a tube g secured to the inner edges of the fins and is axially adjusted for focusing purposes by means of a threaded sleeve i. The outer ends of the fins slide in grooved guides a<1> on a cylindrical front extension b of a parabolic reflector b which is supported within the lamp casing by means of a number of brackets m, two of which carry insulators n for guiding the electric conductors o. In a modified form, the radial fins above and below the axis of the lamp are replaced by a semicylindrical fin attached to the underside of the two horizontal radial fins.
Patent GB-401791-A (GB)
Title: Improvements in and relating to wireless receiving apparatus and circuits therefor
IPC: H04W88/02
Filed: 1932-06-24
Abstract: 401,791. Valve circuits for wireless reception. THISTLETHWAITE, F., 19, Durham Terrace, Bradford, Yorkshire. June 24, 1932, No. 17835. [Class 40 (v).] In a super-regenerative receiver, the quenching frequency is modulated on the carrier wave and used to actuate a relay. The oscillating detector VI is quenched by the oscillations of an oscillator V2 introduced into the grid circuit of valve V1, so that a received carrier wave is modulated by the oscillator V2, and after amplification by valves V3, V4 is rectified at R, the resulting current causing a relay R1 to operate a calling signal lamp S. A switch A allows the earphones P to replace the rectifier R and lamp S. A variable resistance B across a low frequency inter-valve transformer acts as a volume control and also bypasses the note due to the quenching oscillator V2. This resistance is thrown out of circuit when the relay is operative. A rectifier R2 across the signal lamp prevents arcing at the relay contacts. A low pass filter L prevents the relay being actuated by atmospherics. The quenching frequency may be developed by the valve VI.
Patent GB-600908-A (GB)
Title: An improved thrust-indicator for use with aircraft
IPC: G01L5/13
Filed: 1943-10-28
Abstract: 600,908. Thrust indicators for aircraft. MIRZA, R. N. Oct. 28, 1943, No. 17842. [Class 69 (i)] [Also in Group XXXIII] An aircraft is provided with means for showing whether the propeller, or reaction jet in the case of a jet-propelled machine, is developing thrust, said means comprising a pressure sensitive device subjected to the pressure of the propeller slipstream or jet, in association with an indicator. The device may be adapted to give a quantitative indication of the thrust or thrust horse-power developed. In the construction according to Fig. 1 the indicator comprises a U-tube monometer 17 with pitot-heads 11, 13, respectively disposed in, and clear of, the propeller slipstream or jet. The liquid in the tube may be electrically conductive, one limb housing a resistance in series with a battery and an ammeter. Fig. 2 shows an arrangement in which the pitot-heads 15, 16, are connected to compartments 20, 21, formed in a chamber 19 by a diaphragm 22, the movement of the latter being utilised to operate a thrust indicator 31. The indicator transmission system includes a lever 25 pivoting about a fulcrum 26, the position of which may be varied by mechanism operated by a fan rotated at a speed proportional to the air-speed of the machine, in order to give a direct reading of the thrust horse-power. The pitot-heads ma.y be rotatable and provided with fins in order that the orifices may be set normal to the airstream. In the further modification according to Fig. 5, a short vertical tube 39 is placed in the propeller slipstream, the tube being provided with forwardly-facing openings 44, 45, disposed one on each side of a central partition 43, the pressure difference in the two compartments being reversed when the propeller ceases to be power-driven and is rotated by the air flow across it. The compartments may be in communication with a differential pressure gauge or with a pressure-operated electric switch controlling an indicator lamp.
Patent GB-1038145-A (GB)
Title: Fluid metering apparatus
Inventor: KNOWLES ALBERT FRANCIS
IPC: G01F5/00
Filed: 1963-05-06
Abstract: 1,038,145. Reciprocating pumps, compressors. IMPERIAL CHEMICAL INDUSTRIES Ltd. May 6, 1963, No. 17879/63. Headings F1A and FIN. [Also in Division B1] In a pump for the manufacture of polyurethane foam a main piston 10 reciprocates in a cylinder 7 and two or more subsidiary pistons 13 reciprocate in subsidiary cylinders 11. The main piston 10 is reciprocated by a lever pivoted on a bracket 17 and at the outermost limit of its travel the pistons 13 abut a plate 19. Each piston 13 carries a threaded rod 18 which is free to move in a hole 20 in the plate 19, each rod carrying an adjustable nut 21. Each piston 13 moves with the piston 10 until further movement is arrested by the nuts 21 and fluid enters the cylinders 11. On the return stroke of the piston 10, the pistons 13 move therewith until they abut the plate 19 whereupon the contents of the cylinders 11 are discharged into the cylinder 7. The fluid in the latter cylinder is expelled through ports 8 by the piston 10 into a mixing chamber 1 which is rotated by means of a belt driven pulley 4. A fixed rod 9 prevents or reduces splashing at the outlet 2.
Patent GB-115801-A (GB)
Title: Improvements in Ignition Starting Apparatus for Internal Combustion Engines.
IPC: F02N15/00
Filed: 1917-12-05
Abstract: 115,801. Soc. d'Electricite Nilmelior. March 2, 1917, [Convention date]. Systems, electric.-A starting-arrangement particularly designed for rotary-cylinder engines consists in igniting, by means of an auxiliary generator 8, in those cylinders which are at expansion. Current is sent from the generator 8 by a distributor, consisting of an arm 13 and segments 9 - - 12, alternately to brushes 15, 14, the segments of the plate 2 in contact with these brushes being connected to cylinders in expansion at the moment of ignition, the brush 7 in circuit with the magneto 4 being used for normal running.
Patent GB-1428564-A (GB)
Title: Oxo-dibenzofuranbutyric acids and esters
IPC: C07D307/91
Filed: 1973-04-16
Abstract: 1428564 Oxo-dibenzofuranbutyric acids and esters AMERICAN HOME PRODUCTS CORP 16 April 1973 [30 Oct 1972] 18203/73 Heading C2C The γ-oxo-2-dibenzofuranbutyric acid of Formula I is separated from mixtures which contain at least 80% of said acid together with γ-oxo-3- dibenzofuranbutyric acid by (i) esterification to form a mixture of lower alkyl esters, (ii) separation of said mixture of esters, and (iii) separately hydrolysing said esters to obtain the corresponding acids, where the term lower alkyl refers to C 1 -C 6  straight chain alkyl groups and C 3  or C 4  branched chain alkyl groups. The preferred esterification method is reaction of the acid mixture with an alkanol in the presence of an acid catalyst while the preferred hydrolysis method is base hydrolysis. The mixture of esters may be separated by fractional crystallization or chromatography on silica gel or neutral alumina, Pharmaceutical compositions having activity against inflammatory conditions comprise a compound of Formula I or a pharamaceutically acceptable acid addition salt thereof together with a pharmaceutically acceptable carrier.
Patent GB-811213-A (GB)
Title: Improvements in or relating to a method of testing a sample of quartzite for use as source material in a hydrothermal quartz crystal growing process
IPC: B65H19/26
Filed: 1954-06-23
Abstract: A sample of quartzite for use as source material in a hydrothermal quartz crystal growing process, is tested by irradiation with X-rays and observing whether or not there is darkening of the quartz crystal grains in the quartzite.  When darkening is observed this indicates that the aluminium present in the quartzite will form simple ions in a solution of the quartzite in sodium carbonate solution, which aluminium will tend to replace silicon atoms in a quartz crystal grown from the solution; to grow good quality quartz crystals from such quartzite, a process described in Specification 797,203 is used, employing a solution of sodium carbonate, sodium hydroxide and sodium fluoride.  When no darkening is observed this indicates that the aluminium will not be available in solution to replace silicon atoms in a crystal grown using this quartzite, and a process described in Specification 811,214 may be used employing a sodium carbonate solution.  A thin slice is cut from a piece of the quartzite and mounted on a backing plate, such as of glass, and irradiated with a dosage of X-rays between limits such that it is not sufficient to darken a synthetic quartz crystal but will darken melting quality rock crystal; a dosage of 5 X 106 Rontgens is suitable.  Part of the sample may be shielded by a lead screen to allow comparison to be made.  Specification 811,215 also is referred to.
Patent GB-1350256-A (GB)
Title: Water-soluble monoazo dyestuffs
IPC: C09B29/00
Filed: 1971-06-01
Abstract: 1350256 Water-soluble mono-azo dyestuffs SANDOZ Ltd 1 June 1971 [19 June 1970] 18477/71 Heading C4P Novel dyestuffs of the formula (wherein X is CH 3 , C 2 H 5 , Cl, OCH 3  or OC 2 H 5 , and one Y is H and the other is -COOR in which R is a substituted or unsubstituted phenyl radical or a substituted or unsubstituted hydrocarbon radical attached to the oxygen atom via a -CH 2 - group) are prepared by coupling a suitable diazotized amine with 2-amino-8-hydroxynaphthalene-6-sulphonic acid. The dyestuffs are used for the dyeing and printing of natural and synthetic polyamide fibres and for dyeing leather, in scarlet and bluish red shades.
Patent GB-408569-A (GB)
Title: Manufacture of dyes
IPC: C09B23/04
Filed: 1932-06-30
Abstract: Pseudocyamine dyes are prepared by condensing, in the presence of a base, a quaternary quinolinium salt containing a reactive replaceable substituent in the 2-position with a quaternary salt of a 2-methyl-oxazoles-thiazole or -selenazole.  The dyes have the general formula <FORM:0408569/IV/1> A and B represent univalent hydrocarbon residues, R1 and R2 represent alkyl groups and X a suitable acidic radicle; the quinoline nucleus may be further substituted.  The base employed for the condensation may be organic (cf. Specification 408,571) or inorganic.  In examples: (1) 2.4-dimethyloxazole is converted to the methyl-p-toluenesulphonate quaternary salt and condensed with 2-iodoquinoline methiode and ethiodide in presence of quinoline and triethylamine respectively; (2) 4-phenyl-2-methyloxazole is converted to the methyl and ethyl-p-toluenesulphonate quaternary salts and these condensed with 2-iodoquinoline ethiodide in presence of triethylamine; (3) 2-methylthiazole is converted to the methyl-p-toluenesulphonate and condensed with 2-iodoquinoline ethiodide in presence of caustic potash or quinoline; (4) 2.4-dimethylthiazole methiodide is condensed with 2-iodoquinoline ethiodide in presence of caustic potash; (5) 4-phenyl-2-methylthiazole methiodide (prepared by heating the base with methyl iodide in a sealed tube) is condensed with 2-iodoquinoline methiodide in presence of caustic potash, quinoline, or triethylamine; the ethyl-p-toluenesulphonate salt is condensed with 2-iodoquinoline ethiodide to give a similar dye; (6) 4-phenyl-2.5-dimethylthiazole methiodide is condensed with 2-iodoquinoline ethiodide in quinoline; (7) 2-4-dimethylselenazole is converted to its methyl-and ethyl-p-toluenesulphonate quaternary salts and heated with 2-iodoquinolinium methiodide and ethiodide respectively in quinoline or triethylamine; (7) 4-phenyl-2-methylselenazole methyl-p-toluenesulphonate is condensed with 2-iodoquinoline ethiodide in triethylamine.  The following products may also be prepared by the above means:--1<1>-ethyl-3.6<1>-dimethyl-4-phenylthiazolo -pseudocyanine iodide, and 1<1>.3 - diethyl - 4 . 7<1>-dimethylthiazolo-pseudo - cyanine iodide (the 2-iodo-7-methylquinoline ethiodide employed as reactant in the latter preparation is prepared from 7-methylquinoline similarly to the production of 2-iodoquinoline ethiodide from quinoline).  The 2-alkylselenazoles are prepared by condensing an a -halogenoketone or a -halogenoaldehyde with selenoacetamide (cf. Specification 405,028).
Patent GB-936946-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B29/06
Filed: 1962-05-15
Abstract: 936,946. Sewing machines. G. M. PFAFF A.G. May 15, 1962 [May 25, 1961], No. 18585/62. Class 112. In a sewing machine provided with needlefeed and wheel-feed, the latter is arranged to impart separate feeding pulses synchronized with the feeding and return strokes respectively of the needle. As shown, a rotary shaft 13 is coupled by an eccentric 14 and pitman 15 to a crank 16 on a rock-shaft 19. A crank 21 on the latter is connected by a link 23 to the driving element 27 of a uni-directional coupling 29. A crank 22 on shaft 19 is connected by a link 24 to the driving element 28 of a unidirectional coupling 30. The driven elements 33 and 34 respectively of said couplings are fast with a sleeve 32 which is journalled on a fixed shaft 31 and carries a gear 39 meshing with a gear 41 on a shaft 40 coupled by gears 42, 43 to the lower feed wheel 44. The arrangement is such that the couplings alternately impart rotary movement to shaft 40. A crank 18 on shaft 19 is connected by a link 46 to a crank 47 on a rock-shaft 48. A crank-pin 50 on the latter engages a slot 51<SP>1</SP> in a pivoted frame 51 carrying the needle bar 10, for imparting feed and return movements thereto. A crank 52 on shaft 48 is connected by a link 53 to a crank 54 on a rock-shaft 55. A crank 56, of adjustable length, on the latter is connected by a link 58 to the driving element 62 of a uni-directional coupling 64. A crank 57 on shaft 55 is connected by a link 59 to the driving element 63 of a uni-directional coupling 65. The driven elements 66, 67 respectively of said couplings are fast with a shaft 75 coupled by gears 78, 79 to the upper feed wheel 80. The arrangement is such that the couplings alternately impart rotary movement to the shaft 75. The wheels 44 and 80 are driven by the couplings 30 and 65 respectively during the feed stroke of the needle bar, and by the couplings 29 and 64 during the return stroke. The length of crank 56 may be varied to produce stretching or gathering of the work. Crank 21 may be made adjustable in length.
Patent GB-1336118-A (GB)
Title: Medical infusion apparatus
IPC: A61M5/142
Filed: 1972-04-21
Abstract: 1336118 Medical infusion apparatus S H ANDERSEN [trading as TRANSCODAN SVEN HUSTED-ANDERSEN] 21 April 1972 [23 April 1971] 18747/72 Heading A5R Apparatus for infusion or transfusion comprises a pump 3, a cannula holder 7, and a resilient hose 5 which forms an expansible reservoir and which is located between the pump and the holder. Non-return valves 2, 4 are provided on either side of the pump which is connected to a transfer apparatus 1. Hoseclips 9, 10, also provided either side of the pump, regulate the liquid flow to a patient. Upon actuation of the pump 3 pressure is generated in the expansible hose 5 causing it to expand in the radial direction and the liquid inside the hose to become pressurized. The liquid then flows through hose 8 to the cannula holder 7 and a cannula (not shown). The hose 5 is so dimensioned that upon the, suction stroke of the pump liquid is continuously delivered, owing to the positive pressure remaining within the hose, in a practically uniform flow. Alternatively, closing of hose-clip 10 can be made after a high fluid pressure is produced within the reservoir without improving the continuous flow of liquid to the cannula even though the pump is not operational. The hose 5 may be made of rubber or a rubber-like material, and the holder of plastics, e.g. polyvinylchloride.
Patent GB-1087496-A (GB)
Title: Camera diaphragm presetting devices
IPC: G03B9/07
Filed: 1965-05-05
Abstract: 1,087,496. Diaphragm adjusting device. ERNST LEITZ G.m.b.H. May 5, 1965 [May 29, 1964], No. 18890/65. Heading G2A. A diaphragm comprises diaphragm leaves 4, a fixed leaf ring 5, and a rotatable leaf ring 6. The ring 6 has arms 6a and 6b, the arm 6a abutting a projection 7a on a ring 7 rotatable in mounting 1 which is screwed to part 2 carrying objective lens. A presetting ring 10 has an inner ring 10a rotatable by ring 10 through a pin 14. The ring 10a is connected to an arm 16 and an adjustment cam 17 engaging a pin 18 connected to an exposure meter (not shown). Arm 16 terminates in a fork which engages an arm 11a on a ring 11 provided with a cam 19. A spring 20 holds an abutment lever 12 in engagement with cam 19 and so in the path of arm 6b. Presetting of the diaphragm is effected by rotation of presetting ring 10 which through arm 16 rotates intermediate ring 11 thereby adjusting abutment lever 12 into the path of arm 6b of ring 6 which is spring-urged in the direction to cause arm 6a to contact the lever 12.
Patent GB-516398-A (GB)
Title: Improvements in or relating to the production of tufts or like members composed of textile yarn, strip material or filaments
IPC: D04D5/00
Filed: 1938-06-25
Abstract: 516,398. Trimmings. SHEPHARD, SPRAY,& HADDON, Ltd., HADDON, A., and SPRAY, E. A. June 25, 1938, No. 18923. [Class 141] Apparatus for making pompoms by laying parallel yarns &c. in a groove, binding them at intervals and then cutting between the bindings comprises a tube 15, Fig. 1, through which the yarns are led from spools 12 with tensioning devices 62, the collected yarns being laid in groomed members 17, Fig. 6, adjustably mounted on a beam. The yarns are then gripped by members 18, Fig. 5, carried on a movable beam 36, the members 17, 18 being provided with slots 48, 51 for binding strings. The knives 50 rotate on a shaft 52 carried on arms, which move them between the clamping members and sever the tied yarns into pompoms. The outermost yarns may be tensioned most.
Patent GB-147046-A (GB)
Title: Improvements in or relating to testing sets including electric current transformers for use with measuring instruments
IPC: G01R1/28
Filed: 1920-07-06
Abstract: 147,046. Compagnie pour la Fabrication des Compteurs et Materiel d'Usines a Gaz. June 30, 1919, [Convention date]. Regulating transformers.-In a transformer with one or more windings, for use in calibrating measuring instruments, a single winding is used for both primary and secondary currents, the standard instrument being placed in the primary circuit and the instruments to be calibrated in the secondary circuit. In the arrangement shown in Fig. 1, the primary winding AD is provided with tappings B, C and the secondary winding AS is merged in a portion of the primary winding. One of the sections of the primary winding may form a separate coil AB, Fig. 2, the remaining sections of the primary winding and the secondary winding being merged in a single coil CE. In a modification, two sections of the primary winding form separate coils which can be connected in series or parallel. A single-winding transformer may be combined with a switch as shown in Fig. 4.
Patent GB-1010716-A (GB)
Title: Dehydrogenation of ethylbenzene
IPC: C07C5/333
Filed: 1962-05-16
Abstract: The catalytic dehydrogenation of ethylbenzene to styrene is effected in a series of reactors with inter-stage heating of reactants. This is preferably effected by dividing the reactor into a number of catalyst zones, preferably four or more, and injecting hot steam into the spaces between the catalyst stages or applying external heating to the gases between the stages or a combination of the two.  The catalyst may be one based on an oxide of iron, zinc, chromium or magnesium.  The reaction temperature may be about 560-600 DEG C., the difference between overall maximum and minimum temperatures is preferably below 75 DEG C. and the reactants preferably enter each zone at a temperature within 2 DEG C. of the initial temperature of the previous zone.