baber/WOPTO huggingface dataset:
Patent GB-1045478-A (GB)
Title: Apparatus exhibiting stimulated emission of radiation b
IPC: H01S5/024
Filed: 1963-10-14
Abstract: 1,045,478. Semi-conductor lasers. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 14, 1963 [Oct. 15, 1962], No. 40363/63. Heading H1K. [Also in Division H3] Charge carriers are injected into a body of direct band gap material at a rate sufficient to stimulate emission of radiation due to recombination of the carriers. A semi-conductor body consists of GaAs with a PN junction formed by diffusion between zinc and tellurium doped regions. A gold and antimony plated washer is attached to one side of the device and an indium contact is applied to the other side. The device is operated at low temperatures, e.g. 25 K or 77 K. Details of many such devices, and their performance, are given in the Specification, together with several modifications. In one device, cadmium replaces zinc as a dopant, a nickel washer soldered with tin being used as one contact, and an InGaAs alloy as the other. A second device uses a gold-plated MoHg washer as one contact and tin or evaporated gold as the other. A further device is undoped on one side of the junction. Other suitable semi-conductor materials include GaSb, InSb, InP, InAs and GaAs-GaP alloys. Charge carrier injection may be achieved by using a magnetic rectifier structure or a semi-conductor-metal junction instead of a PN junction.
Patent GB-1215164-A (GB)
Title: 21-sulphonated pregnadienes
IPC: C07J71/00
Filed: 1967-11-28
Abstract: 1,215,164. 21-Sulphonated pregnadienes. E. R. SQUIBB & SONS Inc. 28 Nov., 1967 [21 Dec., 1966], No. 40464/70. Divided out of 1,215,161. Heading C2U. Novel compounds of formula (wherein R is C 1-12  hydrocarbon carboxylic acyl and R<SP>1</SP> is C 1-8  alkyl) are prepared by esterification of the corresponding 17-ols. 17,21 - Dihydroxypregna - 4,9(11) - diene - 3,20- dione 21-mesylate is prepared by mesylating the parent 17,21-diol. Compounds of the above formula are convertible into further products as described in Specification 1,215,161.
Patent GB-863804-A (GB)
Title: An improved method and apparatus for heating cans
IPC: A23L3/02
Filed: 1957-12-31
Abstract: 863,804. Heating and sterilizing food in cans &c. CHEFTEL, H., and BEAUVAIS, M. Dec. 31, 1957 [Jan. 3, 1957; July 29, 1957; Dec. 27, 1957], No. 40478/57. Class 49. [Also in Group XXX] Cans &c. of food are subjected to a heating front having a hightemperature gradient, provided e.g. by infra-red radiation or naked flames produced by burning gaseous fuel, while rotating the cans along their horizontal axis. The heating front may be divided into heated and unheated sections, especially for heat-sensitive foods such as milk. In one embodiment (Figs. 2 and 3), cans 5 are first preheated to 100‹ C. by pushing them on bars 6, 7, above gas burners 10, the preheated cans are closed, laid on their sides and passed through a sterilizing chamber 13, firstly in contact with the flames of gas burners 20, whereby the cans are rapidly heated to sterilizing temperature, then in the lower part of the chamber where they are kept at a constant temperature for a predetermined time and, finally, are cooled by water sprays 24. In another embodiment (Fig. 6), cans 5 are pushed along rotating guide cylinders 26 and are protected from a radiating burner 10 placed slightly above them by a screen 33. In a further embodiment (Fig. 9), cans 5 mounted in a helical rotor 35 roll past burners 37a and 37b.
Patent GB-1197366-A (GB)
Title: Process for the Degassing of Polymers of a beta-Lactone
Inventor: OOSTERHOF HENDRICUS ANTHONIUS
IPC: C08G63/88
Filed: 1968-08-26
Abstract: 1,197,366. Degassing #-lactone polyesters. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 26 Aug., 1968, No. 40714/68. Heading C3R. A polyester obtained by the melt polymerization of a #-lactone is freed from volatile impurities by subjecting the polyester in the liquid state to a pressure of at least 1¢ atmospheres (absolute) in contact with a space of lower pressure into which the volatile products enter. Preferably the process is effected in a single- or multiple-screw extruder in which (a) the depth or pitch of the screw(s) decreases in the direction of the discharge side and/or (b) a die with one or more small openings is provided at the discharge side. One or more venting sections to the atmosphere or a vacuum apparatus are attached to the extruder. The polyester may have been obtained by polymerization of the #-lactone in a wiped film reactor, a screw pump or a gear pump and may have been first degassed at atmospheric pressure and thereafter solidified. It may contain a stabilizer or a nucleating agent of which very many are specified. The example describes the degassing of poly-(pivalolactone).
Patent GB-1344673-A (GB)
Title: Roller flight conveyors and chains therefor
IPC: B65G17/24
Filed: 1971-09-01
Abstract: 1344673 Endless chain conveyers REX CHAINBELT Inc 1 Sept 1971 [14 Sept 1970] 40746/71 Heading B8A In an endless conveyer of the kind in which load supporting rollers 12 are carried by laterally spaced roller chains 15, 15 each roller is rotatably mounted on a hexagon cross-section shaft 13, each end of which is received in a hexagonal cross-section bore of a respective roller chain pivot. Alternatively the bore of the roller chain pivot may be formed with at least one flat to prevent rotation of the corresponding hexagon shaft 13. A wear button 28 may be mounted on the outer links of the roller chain.
Patent GB-1365781-A (GB)
Title: Safety device for trailing mandrel
IPC: B29C48/90
Filed: 1972-09-04
Abstract: 1365781 Pressure relieving devices KUNSTSTOFFWERK Gebr ANGER GmbH & CO MUNCHEN 4 Sept 1972 40836/72 Heading F1D [ Also in Division B5] A plug 3 which is attached by a chain 7 to an extruder die core, and function to retain compressed supporting air within the interior 9 of an extruding thermoplastic tube, is provided with a valve closure 4 which functions, on accidental breakage of the chain 7, to release the compressed air from the space 9 to prevent high velocity projection of the plug 3. The closure 4 seats at 14 on the plug, obdurating the outlet of a bore through the plug 3 which communicates with the space 9. The closure 4 is of smaller mass than the plug 3; has an area exposed to the compressed air which is greater than that of the plug 3; and is provided with a centering cone 11 and attaches the plug 3 to the chain 7, via a cardan joint 10 and a rod 5 provided with guide elements 13. Sealing of the plug 3 within the extruding tube 1 is effected by rubber washers 8, and the plug 3 is provided with pivotally attached claws 6. When breakage of the chain occurs, preferentially at a weakened chain linkage adjacent the rod 5, the closure 4 is displaced to release compressed air to an extent limited by abutment of an enlarged rod head 15 with the claws 6, the abutment functioning also, against a spring 12, to pivot the claws 6 apart to dig into the tube wall, Fig. 2 (not shown), to arrest motion of the plug 3.
Patent GB-1033346-A (GB)
Title: Anarrangement for use in automatically indicating selected articles and making available corresponding instructions
IPC: G09F9/00
Filed: 1964-10-07
Abstract: 1,033,346. Selective signalling systems GHIELMETTI A.G. Oct. 7, 1964 [April 11 1964], No. 40958/64. Heading G4H. A card has an edge notched in accordance with a type of apparatus to be assembled. A combination of switches 14 are closed by the card to energize corresponding relays 15 to provide an output on one of leads 19. The diode matric energizes a plurality of lamps 41 which are placed over respective component bins, or operates an automatic dispenser for the com ponents required. One of the contacts of rotary switch 47 is also energized by decoder 15, motor 33 being energized to rotate the switch arm until the marked contact is reached, and at the same time rotating an endless film 32 to the desired position to display the appropriate assembly instructions. The instructions may alternatively be selected from a magnetic tape or a record player.
Patent GB-1192008-A (GB)
Title: Improvements in or relating to Colorimeters
Inventor: TROWELL FRANK
IPC: G01N21/25
Filed: 1966-09-14
Abstract: 1,192,008. Photo-electric colorimeters. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Sept. 11, 1967 [Sept. 14, 1966], No.40980/66. Heading G1A. A colorimeter comprises a plurality of flow cells spaced around a circle with their axes transverse to the circumference a light source directing a beam of light axially through each cell means for guiding light from said plurality of flow cells to a common light intensity measuring means and a shutter arranged to rotate in a circular path between said light source and the light guiding means, said shutter having an aperture for admitting light through to said measuring means for each cell in turn as the shutter rotates. Fifteen pairs of flow cells 23, 24, Fig. 2 for sample and reference fluids are illuninated by tungsten or quartz iodine lamps 25 through different filters 26. The light passing through the cells 23, 24 is conducted by fibre optic bundles 36, 37 respectively to two recording photometers. A shutter 28 is rotated by a motor between the lamps 25 and the filters, the shutter having an aperture of size equal to the circumferential distance between corresponding cells of adjacent pairs whereby light from each of these cells falls in turn on the associated photometer with no blank interval. Test procedure. A sample whose response to a reagent is to be measured at 14 different wavelengths is split into 28 units, 14 of which are treated with reagent and put in the flow cells of 14 pairs. The remaining pair of cells (with which the aperture in shutter 28 is initially aligned) contains water for standardization. The shutter 28 is then rotated once and each time the aperture coincides with a pair of flow cells, a micro-switch, 47, 48 &c. actuates the recording of the sample and reference absorption at the wavelength of the associated filter. Flow cells. Each flow cell has an inlet pipe having a pair of electrodes and an outlet pipe connected through a valve to a suction source. When the inlet pipe is dipped in a test tube of sample a circuit through the electrodes opens the valve and sample flows through the cell purging the previous sample until the level in the test tube falls below the level of the electrodes. The inlet and outlet tubes are positioned so that the end faces of the flow cell are washed by the flowing sample. In a modification, Fig. 1, (not shown) the lamps are located radially inward of the flow cells and the fibre optic bundles start from points radially outwards from the flow cells. The shutter may be between lamp and filter, filter and flow cell or flow cell and fibre optic bundle. All the sample and reference cells may be concentrated in separate sectors of the circle and the shutter provided with two apertures.
Patent GB-1392298-A (GB)
Title: Method of foil blocking upon card or the like
IPC: B41F19/06
Filed: 1971-09-03
Abstract: 1392298 Colour-embossing DRG PACKAGING Ltd 16 Aug 1972 [3 Sept 1971] 41204/71 Heading B6J Images are blocked on to a sheet by means of a pair of heated dies 2, 4 and an intermittently fed blocking-foil 8, the foil producing a predetermined number of spaced images on the sheet while being fed along a first path in which an area A of the film is presented to the dies, and displacing the film laterally to produce further images while being fed along a second and parallel path in which an area A1 is presented to the dies, the film then being returned to the first path either directly or after displacement into a third path. In the form shown, where the distance between the dies is somewhat greater than twice the image length, three images are produced on each path.
Patent GB-1481499-A (GB)
Title: Stair structure
IPC: E04F11/025
Filed: 1975-10-10
Abstract: 1481499 Staircases YOKOMORI SEISAKUSHO KK 10 Oct 1975 [16 Jan 1975 18 April 1975] 41589/75 Heading E1B A staircase comprises parallel spaced apart stringers with fastening means 3, 4 spanning therebetween and a plurality of step members each having a horizontal tread portion 5a formed with a downwardly projecting portion whose end 5c is bent to receive and be supported by one of said fastening means, and a vertical riser whose end 5d is bent to receive and be supported by another of said means. In a modification the end of the riser engages the same means as the tread of the step member thereabove. The means are rods passing through holes in the stringers and are secured by nuts. In a further modification the riser portion only extends for a small portion of the rise between adjacent treads. The step members may be coated in polyurethane and have raised ribs or studs across the front upper edge of the tread and incorporating granular wear resistant material. The polyurethane may include glass beads.
Patent GB-1332390-A (GB)
Title: Liquid-pumping apparatus
IPC: F04C11/00
Filed: 1971-09-07
Abstract: 1332390 Rotary pumps CHANDLER EVANS Inc 7 Sept 1971 [17 Sept 1970] 41690/71 Heading F1F In pumping apparatus for a liquid such as gasturbine fuel a centrifugal pump 20 is connected in series with gear pump 24 and driven simultaneously with the latter by a shaft 40, the pump 24 being unloaded when the pressure P F  at an outlet 14 reaches a predetermined value. A sealing block 46 is urged towards the gears 32, 34 by a spring 52 and defines a discharge chamber 47 communicating with the outlet 14 and a valve chamber 62 through an outlet 26 and an orifice 58, respectively. While the pressure P F  is less than the predetermined value a valve-member 74 closes an orifice 70 so that the said pressure helps the spring 52 to hold the sealing block against the gears. When the said value is reached the pressure P F  acting upon spring-loaded bellows 78 by way of a filter 27 withdraws the valve member from the orifice 70, the consequent pressuredrop across the orifice 58 causing retraction of the sealing block. A pressure-relief conduit 28 is controlled by a check-valve 30. In a second embodiment, Fig.2, spring-loaded wedges 106, 108 replace the spring 52, shafts 112 serving as pistons being subjected to the pressure P F  through an orifice 120, which causes a loss of pressure when the orifice 70 is opened. A somewhat . similar arrangement is made in a third embodiment, Fig.3 (not shown), the wedges being replaced by struts (216) sliding on oblique fixedsurfaces and engaged by spring-loaded pistons (210, 212) subjected to the pressure in the chamber 47 through an orifice (204) in the sealing block. The wedges 106,108 may be replaced by a single wedge (not shown). Each embodiment may include check plates for the gears.
Patent GB-1300124-A (GB)
Title: A photographing arrangement for use with a cathode-ray tube
IPC: H04N5/84
Filed: 1970-09-01
Abstract: 1300124 Photographing cathode ray tube images MATSUSHITA ELECTRIC INDUSTRIAL CO LTD 1 Sept 1970 [5 Sept 1969] 41763/70 Heading G2A A glass fibre member 12 is in contact at one end with the face plate of a cathode ray tube, and. is shaped at its other end to form a display surface 12a which is brought into direct contact with a photographic film 30; the contact pressure between the two is detected, and adjusted and maintained at a desired value while the image on the cathode ray tube screen is photographed. The camera assembly 11, shown in exploded form in Fig. 1, comprises a frame structure 13, slide frame 14, pack frame 15, shutter panel 16, and pack body 17, the latter containing the film 30 which can be drawn out through a slot 31. The parts 14, 16, 15, 17 fit together, and attach to the frame structure 13 by means of claws such as 20a at each corner of frame 14 which engage in recesses 19a- 19d on frame 13. A support structure 34 is secured to the wall of a measuring instrument 10, and the glass fibre member 12 is secured to the face plate of the cathode ray tube, which is part of the instrument 10. Extending from support 34 are a main guide spindle 32 and two auxiliary guide spindles 33, 33'. These spindles all pass through corresponding bores in a camera frame support member 36, which can thus slide along the guide spindles. Its movement therealong is controlled by an adjustment knob 39, at whose other end is a pinion engaging with a rack portion 32a on spindle 32. When parts 13-17 are all assembled together into a single structure, this can be attached by means of hinges 23, 23' on frame 13 which engage with corresponding bearings 42, 42' on frame 36. Thus the whole camera assembly is now attached to frame 36, and can be moved therewith along the guide spindles by turning knob 39. A lightexcluding bellows 45 extends between frame 36 and support 34. Frame 36 carries a spring-loaded plunger member 47, which comprises an openended cylinder 48 secured in the frame, another open-ended cylinder 49 slidable inside the first one, and an internal spring 50 urging them apart. The support 34 carries a pressure-sensitive element 51. As frame 36 is moved towards support 34, and the shutter panel 16 is pulled upwards, the display surface 12a comes into direct contact with the film 30, plunger 49 comes into contact with element 51, and the pressure between them is converted into an electrical signal, which is registered visually on an indicator 52. When the indicated pressure is at a desired value, the camera unit 11 is locked in position by a pin 22 latching in a slot 43. The assembly 14-17 can be moved vertically, so that different images can be photographed on different portions of the film. The assembly 13-17 can be swung aside on its hinges, to allow visual inspection of the display surface.
Patent GB-965439-A (GB)
Title: Dampening means and method for dampening a lithographic offset printing plate
Inventor: DAHLGREN HAROLD PHILLIP
IPC: B41F7/28
Filed: 1960-12-05
Abstract: 965,439. Printing apparatus. HARRIS-INTERTYPE CORPORATION. Dec. 5, 1960, No. 41784/60. Heading B6C. In order to dampen the plate cylinder 2 of a lithographic offset printing press, water is flicked on to a contacting ink forme roller 24 by a rotating brush 64 which is supplied from a container 59 by a roller 61 located to ensure that its wet surface is pressed into the bristles of the brush. The dampening device, which comprises the container 59, the roller 61 and the brush 64 is mounted in a carriage having two side plates 46 each of which is slidably carried by a side frame 1 of the press. Movement of the carriage is effected through interengagement of a rack 47 fixed to each side frame with a pawl 52 carried by the associated plate 46 actuation of the pawls arising from levers 55 moved by a rotatably mounted shaft 45 rotated by a rod 44 actuated by a cam, crank or electrically driven mechanism. Rotation of the rod 44 also causes the forme roller 24 to move either towards or away from the plate cylinder 2, this movement deriving from a camshaft 39 rotated by a crank arm 43 which is pivotally attached to the rod 44. The roller is swingably mounted on a hanger arm 30 pivotally connected to a shaft 21 for the roller 20 and the head of an adjustment screw 33 carried by the arm 30 contacts the camshaft 39. Each of the forme rollers 16, 18, 22, 24 is moved relative to the cylinder 2 by means of a hanger arm and screw arrangement similar to 30, 33, and the arm and screw 30, 33 &c. arrangements are duplicated at each side of the press. The roller 61 has a knurled surface whilst the brush bristles are of nylon. The brush 64 is lifted away from the roller 61 while the press is in the non-printing position, i.e. with the forme rollers and dampening device withdrawn from the cylinder 2, by a manually operated crank arm 75 secured to a shaft 76. A cam lobe 77 is mounted on shaft 76 in a position to contact each of two arms 67 between which the brush 64 is swingably mounted. The brush 64 is driven from the press drive through a variable speed transmission 93 adjustment of which is effected manually through a hand wheel 94.
Patent GB-1040786-A (GB)
Title: Diaphragm valve
IPC: F16K31/126
Filed: 1964-10-14
Abstract: 1,040,786. Valves. GRINNELL CORPORATION. Oct. 14, 1964 [Oct. 14, 1963], No. 41869/64. Heading F2V. A diaphragm valve, as shown and in Figs. 2 to 13 (not shown) has a weir or seat 28 which blends smoothly and gradually into a rim 24 of the body 10 which defines an opening over which the bonnet and actuating assembly 34 is placed. The bonnet assembly includes clamping means which serves to clamp both the peripheral diaphragm portion 22 engaging the rim 24, and also a portion of the diaphragm extending inwardly of this rim and forming part of the seat. In this way the valve is made effectively of smaller flow capacity than it would be without this clamping means. As shown, the clamping means comprises a shaped annular plate member 74. The diaphragm is connected to the usual actuator 60 movable in guide grooves 62 by spindle and hand wheel 56, 50. In a modification, Fig. 7, the plate 74 has a deep inner part providing grooves similar to the grooves 62. In another embodiment, Fig. 6, the clamping means is integral with the bonnet and the valve is actuated by a pressure-responsive diaphragm. In another embodiment, Fig. 9, the clamping means includes a reversible ring member 166 whereby the valve can be reverted to the larger flow capacity it would ordinarily have without the clamping means. The ring 166 is fitted within an outer plate 176 through which the bolts securing the bonnet are passed. The ring has an oval opening 158 in which an oval actuator 156 is movable. The valve is shown assembled for the limited flow. By turning the ring 166 end for end and rotating it through 90 degrees within the outer ring 176, the major axis lies along the seat and the full dimension of the diaphragm is movable toward and away from the seat to provide the increased flow capacity. Stepped surfaces 192, 194 on the actuator co-operate in each of the two assembled positions to determine the maximum lift.
Patent GB-1483904-A (GB)
Title: Barium-containing dispersions and processes for producing them
IPC: C10N30/12
Filed: 1974-09-27
Abstract: 1483904 Overbased materials; lubricants; fuels LUBRIZOL CORP 27 Sept 1974 [12 Oct 1973] 42156/74 Headings C4X C5F and C5G An ocerbased material is made by first carbonating a mixture of a lower alkanol (up to decanol) with a basic compound of barium in an equivalent ratio of 1 : 1 to 100 : 1 and then mixing the product with a stabilizing agent in the presence of an inert organic liquid diluent in an equivalent ratio (barium to stabilizing agent) of 1 : 10 to 10 : 1. The stabilizing agent is a carboxylic acid containing at least 50 aliphatic carbon atoms or an anhydride, ester, amide, imide, amidine or metal salt of such an acid or a mixture of two or more such acids or derivatives. The preferred stabilizing agent is produced by reacting a polyolefine-substituted succinic acid or anyhdride with an ethylene polyamine. The barium compound is preferably the oxide or hydroxide, but may be a sulphide, hydrosulphide or alkoxide. The diluent may be a synthetic or natural lubricating oil, kerosine, naphtha, or diesel fuel, aromatic hydrocarbons or halohydrocarbons, aliphatic hydrocarbons, ketones or ethers, or mixtures of these. An oilsoluble phenol or phenate may be present during the second step, e.g. an alkyl-phenol, a phenolformaldehyde condensation product or a phenol sulphide. Solids may be removed from the product by filtration and volatiles by distillation. Lubricating and fuel compositions comprise a major proportion of lubricating oil or liquid fuel respectively and a minor proportion of the overbased material. The lubricating oils may be used in spark-ignition or compressionignition engines, including two-stroke engines, aviation piston engines and marine and lowload Diesel engines, but also as automatic transmission fluids, axle lubricants, gear lubricants, metal-working lubricants, hydraulic fluids and greases. The base oil may be animal, vegetable, mineral or synthetic, and other additives may also be present.