baber/WOPTO huggingface dataset:
Patent GB-1434660-A (GB)
Title: Vent valve for hermitically sealed flexible containers and a container provided with the valve
IPC: F17C13/04
Filed: 1973-11-30
Abstract: 1434660 Venting bags L COGLIO 30 Nov 1973 [4 Dec 1972] 55546/73 Heading B8V [Also in Division F2] A vent valve for a plastics-bag type of food container comprises a rubber closure member 12 held in contact with a sealing surface 12A on a plastics base member 5 by a projection 13 on a cap 14 which is a snap fit on the base member 5. The cap has one or more vent holes 16. The base member includes a flange 7 which is thermowelded to the container 8 which may be of laminated construction. The closure surfaces are coated with a thin layer of silicone oil which prevents the valve from opening unless the pressure within the valve is clearly in excess of ambient atmospheric pressure thus ensuring that air cannot enter the bag to contaminate the contents. A perforated wall 11 in the base member 5 acts as a filter to prevent the contents of the bag from interfering with the operation of the valve.
Patent GB-1149819-A (GB)
Title: Process for the manufacture of 4,4'-diamino-1,1'-diamino-anthraquinonylenes
IPC: C09B1/00
Filed: 1967-12-08
Abstract: 1,149,819. Anthraquinone dyestuffs. CIBA Ltd. 8 Dec., 1967 [12 Dec., 1966], No. 55892/67. Heading C4P. 4,4<SP>1</SP> - Diamino - 1,11 - dianthraquinonyl- 3,31 - disulphonic acid which may be further substituted is prepared by heating 1-amino-4- halo anthraquinone-2-sulphonic acid which may be further substituted with a reducing agent in an aqueous medium in the presence of a catalytic quantity of copper or a copper compound. Hydroquinone is the preferred reducing agent.
Patent GB-1426459-A (GB)
Title: Binder for refractory aggregate
IPC: C04B28/34
Filed: 1973-12-03
Abstract: 1426459 Mixtures containing aluminium compounds IMPERIAL. CHEMICAL INDUSTRIES Ltd 20 Nov 1974 [3 Dec 1973] 55972/73 Heading C1A [Also in Division C3] A mixture comprises (a) as refractory aggregate binder, at least one halogen-containing complex phosphate of aluminium containing one or more chemically bound molecules of water and/or one or more chemically bound oxygencontaining organic molecules, and at least one inhibitor which is an acetylenic alcohol having the formula where R 1  and R 2 , which may be the same or different, are selected from hydrogen atoms and organic groups, Y is a divalent organic group, and n is an integer from 2 to 30. Complex aluminium phosphates that may be used are described in Specifications 1,322,722 and 1,322,724. An essentially dry refractory composition may be formed from a refractory and the mixture of binder and inhibitor. In thespecific examples bauxite aggregate is mixed with high alumina clay, magnesium oxide, a complex aluminium phosphate of the formula MPClH 11 O 9  and an acetylenic alcohol inhibitor.
Patent GB-1436479-A (GB)
Title: Process for separating 1,5-dinitroanthraquinone 1,8-dinitro anthraquinone from dinitroanthraquinone mixtures
IPC: C07C67/00
Filed: 1974-12-30
Abstract: 1436479 1,5- and 1,8-Dinitroanthraquinone BAYER AG 30 Dec 1974 [3 Jan 1974] 55996/74 Heading C2C Substantially pure 1,5-dinitroanthraquinone and substantially pure 1,8-dinitroanthraquinone are separated from an anthraquinone dinitration mixture by treating the dinitration mixture with a mixture of concentrated nitric acid and an inert solvent, separating off the insoluble 1,5-dinitroanthraquinone from the resulting mixture and isolating the 1,8-dinitroanthraquinone from the mother liquor. Preferred inert solvents are aliphatic and alicyclic C 1  to C 12  hydrocarbons optionally substituted by halogen atoms or nitro groups. The 1,8-dinitroanthraquinone is preferably isolated from the mother liquor by precipitation following the addition of water to the mother liquor or after distilling off some of the nitric acid in the mother liquor.
Patent GB-1299847-A (GB)
Title: Improvements in or relating to methods and apparatus for modulating a semiconductor laser
Inventor: PAOLI THOMAS LEE
IPC: G02F1/015
Filed: 1970-11-25
Abstract: 1299847 Lasers WESTERN ELECTRIC CO Inc 25 Nov 1970 [1 Dec 1969] 56022/70 Heading H1C A semi-conductor laser is continuously pumped at a temperature chosen such that selfinduced pulses occur in its output, and the pumping energy is amplitude modulated to give pulse position modulation. The frequency and depth of modulation are chosen to avoid phase locking the laser output pulses to the modulating signal, the choice being made empirically, i.e. by measuring the modulation power required to phase lock the output and subsequently maintaining the power below this level. The selfinduced pulses occur in the microwave region with pumping energies of 1À1-3 times the laser threshold; temperature ranges of 77-110‹ K. are quoted for a GaAs injection diode laser. The pulses apparently occur because of dispersion in the semi-conductor and locking between longitudinal modes. The device is located in a microwave transmission line for coupling to a modulating source, so that the incident modulating microwaves alter the pumping current. The modulation power is around 1 mw. The variation of the output pulse position with the modulating signal may be adjusted by choice of the size of the diode heat sink. The modulating signal may also be used to vary the pumping energy of semi-conductor lasers which are pumped optionally or by an electron beam. Feedback may be applied to stabilize the pulse width, the feedback being electrical, optical or electro-optical as in Specification 1,266,086. Several lasers may be used in a multiplex communication system, and the lasers may have differing output frequencies as in Specification 1,266,084.
Patent GB-1193659-A (GB)
Title: Marine Jet-Propulsion Apparatus.
IPC: B63H11/08
Filed: 1967-12-11
Abstract: 1,193,659. Water jet propulsion. HALL MARINE CORP. 11 Dec., 1967 [15 Dec., 1966], No. 56281/67. Heading B7V. A marine jet propulsion unit adapted to be fitted to the output shaft 30 of an inboard or outboard motor in place of a propeller, comprises a vaned rotor 18 secured by a pin 46 to the shaft 30, and an open-ended shroud 12 into which water enters at one end through the spaces between streamlined struts 16 and is pumped by the rotor 22 out of the other end through the spaces between flow-straightening vanes 28. The shroud is secured by screws 17 to the streamlined struts 16 which are carried by a collar 14 secured by screws 32 to a motor gearcase 6. The flow-straightening vanes 28 extend between the shroud 12 and an afterbody 26 having a bearing 44 for the hub 36 of the rotor 18.
Patent GB-1214008-A (GB)
Title: Character recognition apparatus
IPC: G06V10/10
Filed: 1967-12-12
Abstract: 1,214,008. Character recognition. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 12 Dec., 1967 [15 Dec., 1966], No. 56402/67. Heading G4R. In character recognition apparatus, the character is sampled during relative horizontal movement between the character and a vertical column of photo-cells when a clock-driven cylic counter passes through zero, the counter being incremented at a given frequency between the leading and trailing edges of the first vertical stroke of the character and at twice that frequency thereafter. The thickness of the first vertical stroke equals the distance between sampling points, the first sampling point being at the centre of this stroke (but is not indicated by the counter).
Patent GB-567160-A (GB)
Abstract: 567,160. Two-stroke engines. MANNING, A. E., and HARRIS, B. A..July 21, 1943, No. 11832. [Class 7 (ii)] A two-stroke internal-combustion engine comprises a power cylinder 2, Fig. 5, and a scavenge cylinder 3, the piston 6 in which reciprocates to produce a reduced pressure to assist exhaust from the power cylinder through a transfer port 10 to the scavenge cylinder. The engine may be single cylindered, or, as shown in Fig. 1, may be a horizontally opposed twin comprising a crank-case 1, two power cylinders 2, and two scavenge cylinders 3. The respective pistons 4, 6 may be reciprocated from the same crank-shaft or from separate crank-shafts and the scavenge pistons are approximately 45 degrees in advance of the power pistons. The engine block may consist of two similar interchangeable castings, each comprising a power and a scavenge cylinder and half the crank-case. Mixture passes through ports 7 to the crank-case and also through ports 8, transfer to the power cylinder being effected through ports 9 controlled by the power piston. The outer end of the scavenge cylinder is fitted with a valve comprising fan blades 11 on a shaft 12 carrying a fly-wheel 13, the fan, driven by the exhaust gas, serving to assist exhaust and prevent its return to the scavenge cylinder. Exhaust to the low pressure in the scavenge cylinder is effected when the parts are in the Fig. 8 position, mixture admission being effected through the ports 9. In Fig. 11, exhaust is being completed by the scavenge piston, the transfer port 10 being closed and the power piston moving on the compression stroke. In some cases, the port 8 may lead directly to the explosion side of the power cylinder and may be controlled by the skirt of the piston 4. Crank-case compression may be dispensed with and a direct blower system to the combustion chamber used either of mixture or of air in conjunction with fuel injection. The invention is applicable to compression ignition engines. In another modification, the fan in the scavenge cylinder-head may be replaced. by a rotary valve.
Patent GB-1341183-A (GB)
Title: Consumable electrode wire contact tube for an arc welding torch
IPC: B23K9/12
Filed: 1972-12-12
Abstract: 1341183 Welding by fusion PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 12 Dec 1972 [15 Dec 1971] 57218/72 Heading B3R A contact tube for consumable electrode wire for gas-shielded, particularly plasma-MIG, are welding and particularly for use with stainless steel wire, has a current transmission, wire contacting portion at least mainly of tungsten, e.g. porous sintered tungsten impregnated with copper, the tungsten being resistant to damage caused by sparking resulting from the use of straightened wire. In the plasma-MIG torch shown, a holder 11 carrying a non-consumable electrode 13, e.g. of tungsten, and a holder 51, preferably of copper, having screw-threaded thereon a contact tube 57 are respectively eccentrically and coaxially mounted in a body 3. The latter is provided with a plasma-apertured nozzle 7 and supply ducts 23, 25 respectively for plasma gas, e.g. A, and shielding gas, e.g. a mixture of A and CO 2 . The body 3 and the holders 11, 51 have respective cooling water ducts 27, 29, 31. The holders 11, 51 have terminals 39, 45 for connection respectively to a source 41, via an HF generator 43 and a further source 47. A motordriven device 17 feeds and straightens the consumable electrode wire. The contact tube 57 may be wholly of tungsten or, as shown, comprise a coupling portion 59 of copper having soldered thereon a reduced bore contacting portion 63 of tungsten.
Patent GB-1277329-A (GB)
Title: Ship's propeller securing and jacking means
Inventor: LASKEY NORMAN VERNON
IPC: B63H1/20
Filed: 1970-12-09
Abstract: 1277329 Assembly force fits WAUKESHA BEARINGS CORP 9 Dec 1970 58362/70 Heading B3U [Also in Divisions B7 and F2] A propeller having a hub 12 with a tapered bore is mounted by a force fit on the tapered end 10<SP>1</SP> of the propeller shaft 10 by means of a plate 21 which is bolted by bolts 18 to the end face of the shaft and overlaps part of the hub 12. During assembly, the propeller is forced on to the shaft as far as possible by manual means and bolts 18 are tightened. Pressurized fluid is now forced in one of ducts 34 (the other being blanked off) so that the annular piston 28 draws the propeller and shaft closer together. The plate 21 is reversed for disassembly.
Patent GB-1440929-A (GB)
Title: Folding device for packaging material
IPC: B65B19/24
Filed: 1972-12-21
Abstract: 1440929 Packaging cigarettes A SCHMERMUND 4 Dec 1973 [21 Dec 1972] 59033/72 Addition to 1440923 Heading B8C In a cigarette block packaging machine wherein a revolver 213 having a plurality of cells 324/325 (one only being shown) is rotatable stepwise so that each cell is successively indexed through four stations, including a first station at which a wrapping sheet is received in a respective cell and assumes a U-shape with trailing and leading edge portions projecting radially outwardly from the cell and a second station at which folding means fold said portions over a block of cigarettes received in the cell, the folding means comprises a folder member 451a, which is pivotally-mounted on a carriage 453 reciprocable along guide rods 454, the folder member and carriage being driven such that the folder member is initially pivoted on the carriage in direction radially towards the cell, Fig. 3 (not shown), and then the carriage is displaced from a retracted position to move the folder member across the radially outer face of the cigarette block Fig. 4 (not shown) thereby folding down the trailing one of said edge portions. The folding is commenced after only partial insertion of the block into the cell and completed before insertion is completed. The drive of the carriage and folder member is affected by a shaft 465, which is rotated to rock a rocker shaft 466 and an outer co-axial tubular shaft 467 through cams 482 and 483 and cooperating shaft levers 469 and 468, the shaft 467 being connected by a linkage to the folder member to effect pivoting thereof and the shaft 466 being similarly coupled to the carriage to effect reciprocation thereof. The leading edge portion of the wrapper is subsequently folded over by a stationary folder 62 on indexing of the revolver anticlockwise to a third station. The machine may be of the type described in Specification 1,440,923 in which cigarettes are wrapped on a first revolver in a first wrapper prior to transfer to a second revolver on which a second wrapper is applied, and folding means as described above may be associated with each revolver. Adhesive may be applied to the trailing portion of the wrapper by means described in Specification 1,440.924.
Patent GB-1379419-A (GB)
Title: Perforating and cutting device for a printing machine
IPC: B65H35/06
Filed: 1972-12-21
Abstract: 1379419 Perforating and cutting device PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 21 Dec 1972 59064/72 Heading B4B [Also in Division B8] After passage through a printing station 16 an upwardly moving web 17, Fig. 1, passes through a cutting device 10 which has a selectable setting for perforating the web and a similar setting for complete severance. Such an effect is obtained by causing a serrated-edged knife blade 40, Fig. 3, to move against the strip with such a motion that either the serrations pierce the strip and thereby perforate or the whole blade passes through the strip into a backing recess.
Patent GB-1193800-A (GB)
Title: High Pressure Fluid Gland System for Rotary Shafts
IPC: F16J15/40
Filed: 1968-12-12
Abstract: 1,193,800. Rotary shaft seals. WESTING- HOUSE ELECTRIC CORP. 12 Dec., 1968 [4 Jan., 1968], No. 59150/68. Heading F2B. [Also in Division F1] In a steam turbine shaft sealing arrangement comprising glands 11-16 packed with steam supplied from a high-pressure steam source via a common main conduit 18 and branch conduits 21-25 between the main conduit and the glands, a pressure reducing valve 31-35 is disposed in each of the branch conduits adjacent the glands. In the embodiment shown in which three turbines 1, 2 and 3 are mechanically connected in series, the glands 15 and 16 of turbine 3 are connected to a common branch conduit 25, the other glands being each directly connected to a branch conduit. The pressure reducing valves 31-35 are automatically controlled by gland pressure sensing lines 51-55 and a normally open manually operable valve 41-45 is connected in each branch conduit. The main conduit 18 includes a pressure relief valve 60 and is connected to the high-pressure steam source through an automatically controlled regulating valve 57 by a pressure sensing line 59. Outlet conduits 61-66 from the glands are connected either separately or collectively through a conduit 67 to a region of low pressure e.g. a condenser.
Patent GB-1412789-A (GB)
Title: Methods of and devices for transmitting and receiving as used in navigation system employing the doppler effect
IPC: G01S7/529
Filed: 1972-12-27
Abstract: 1412789 Sonar speed measurement; amplitude modulation THOMSON-CSF 27 Dec 1972 [31 Dec 1971] 59720/72 Headings H3R and H4D A transmit-receive system for a marine sonar Doppler log uses a pulsed transmission, each pulse having an exponentially decaying envelope, these being converted to acoustic energy and radiated, the resulting reflections being sampled during the time interval between transmissions at a portion of the reflected signal which has a substantially constant amplitude for at least a minimum predetermined time shorter than the transmitted pulse length. The Specification states that by transmitting an exponentially decaying pulse, and sampling the receiver output at a fixed time after the end of the transmitter pulse, the sampled echo amplitude will be independent of range. The decaying pulse is generated in transmitter unit 1 by a feedback system controlling the gain of transistor 9. Ultrasonic signal source 8 feeds modulating transistor 9 with a constant amplitude signal. The modulated signal amplitude is detected by linear detector 12 and compared with the amplitude of an exponentially decaying pulse fed to the second input of comparator 11. The comparator output controls the resistance of the source-drain path of FET 10. This shunts the bias resistor of transistor 9 altering its gain. Thus the transistor 9 output is matched to the pulse input to the comparator 11. Since this is derived from the discharge of capacitor 14 through one of resistors 15 it has the required shape. In operation selector 6 connects the resistance 15 producing minimum pulse length and when capacitor 14 is charged from battery 17 clock 7 closes switch 13, causing a pulse to be transmitted. The echo signal amplitude is detected at 24 and compared to a reference level 26. If no signal is detected comparator 25 switches selector 6. to the next range zone and a new resistor 15 and hence new pulse length is selected. The received echoes are subjected to AGC in amplifier 27 to allow for changes in reflectivity of the sea-bed and then passed to measurement unit 5 which measures the Doppler shift and hence the speed of the ship.
Patent GB-1372108-A (GB)
Title: Production of hydroxylammonium nitrate
IPC: C01B21/14
Filed: 1971-12-30
Abstract: 1372108 Hydroxylammonium nitrate BADISCHE ANILIN- & SODA-FABRIK AG 30 Dec 1971 [2 Jan 1971] 60673/71 Heading C1A An aqueous solution of hydroxylammonium nitrate is obtained by reducing nitric oxide NO with hydrogen in dilute aqueous nitric acid at a temp. of 0-80 C. in the presence of a supported platinum catalyst, which catalyst has been partially poisoned with one or more than one element of the main Groups V or VI of the Periodic Table of elements (As or S groups), and which has been activated with gaseous hydrogen whilst in an aqueous suspension just before being used for the reaction, and wherein nitric acid in the amount required for the desired final concentration of hydroxyl ammonium nitrate is added gradually whilst the reaction proceeds. The process may be carried out as a continuous process, and in one or more stages. The temp. used may be 30 to 50 C., and the pressure may be superatmospheric. In a preferred embodiment the catalyst is activated at 40 C., and the mixture is approximately 1À5 N in HNO3, hydrogen being supplied continuously and then whilst stirring vigorously H2/NO mixture in molar ratio 1À7 : 1 to 2 : 1 is supplied, free acid concentration remaining at 1-2 equivalents per litre.
Patent GB-1332145-A (GB)
Title: Apparatus for determining the strength of materials
IPC: G01N3/00
Filed: 1970-12-21
Abstract: 1332145 Testing materials electrically SNAM PROGETTI SpA 21 Dec 1970 [19 Dec 1969] 60684/70 Headings G1N G1S The compression strength of a sample of material is determined by subjecting it to a linearly increasing force produced electromagnetically and noting the current at which the sample breaks. As shown (Fig.1), the sample is located in a holder 3 carried by a movable magnetic core 1 of an electromagnet whose flux is produced by solenoid winding 7. The upper part of core 1 is of frusto-conical shape and matches that of a surrounding ring 1a so that small movements of the core 1 do not change the size of an air gap 6 between them. A spring- loaded rod 2a bears down on the sample, its position being determined by rotation of a screw 4a by means of a knob 4 attached to screw 4a through radially spring-loaded ball bearings. The knob 4 is rotated until it slips relative to the screw 4a at a predetermined initial pressure on the test sample. To perform the test, the current in winding 7 is increased linearly to produce a corresponding linearly increasing compression force on the sample until it breaks. A sensing coil 8 surrounding energizing coil 7 has a constant voltage induced in it until the sample breaks, and the resultant large change in voltage stops the increase in energizing current which is indicated on a meter, and operates an alarm circuit. The sensing member 8 may alternatively be a differential transformer or compacitor or variable resistor.
Patent GB-1282930-A (GB)
Title: Magnetic separator
Inventor: TURNOCK ARTHUR GEORGE
IPC: B03C1/14
Filed: 1969-12-30
Abstract: 1282930 Magnetic separators ELECTROMAGNETS Ltd 19 April 1971 [30 Dec 1969] 63169/69 Heading B2J A magnetic separator includes a feeding device such as a rotary vibrating bowl 11 for feeding a mixture of magnetic and non-magnetic material in a transverse direction to the upward direction of movement of an operative surface to which the magnetic material adheres. The operative surface preferably comprises the surface of a drum 16 in which a stationary magnet unit 18 is housed. Material to be separated is loaded onto the bowl 11 at D from where rotation and vibration cause it to be brought tangentially against the surface of the drum 16. The drum 16 may have a conveyor belt running over it. A linear vibratory conveyor may be employed with an edge which is inclined at an acute angle to the longitudinal direction of the conveyor, the drum being positioned along this edge.
Patent GB-755002-A (GB)
Abstract: 755,002. Jigs. YUBA MANUFACTURING CO. Nov. 8, 1954, No. 32287/54. Class 82(2). An ore jig has a pair of hutches 7, 8 mounted on a frame in opposition to each other and having diaphragms 50 56 fastened to peripheral flexible mountings 46, 57. The diaphragms are rigidly coupled together by ties 67 and yokes 64, 69 for movement by a drive mechanism 54 whereby the water pressure on the diaphragms and consequently the reaction force on the drive, is maintained constant. Shot beds 27, 35 each including a grid 28, 36 and a screen 29 are retained by releasable members 32, 38 and act in series on the material supplied at 26 and discharged in fractions, the light at 41 and the heavy at 24 and 19. The other pair of jigs 9, 10 are similar and are connected to the driving mechanism 90 degrees out of phase with the first pair to give an even resisting torque to the drive motor over its entire revolution. The drive mechanism (see Fig. 8) comprises a drive shaft 72 having inner and outer eccentric hubs mounted thereon so that by varying the position of the hubs to one another any degree of eccentricity from nil to twice that of each hub, can be obtained. The adjustment is made by releasing a set screw 142 in the outer hub 136 which engages one of a series of spaced notches 139 in the inner hub 133. The pitman 156 is driven from the eccentric and oscillates the ram 116 thus driving the diaphragms 50 and (through the ties) 56. A drip feed lubrication system for this driving mechanism is disclosed.