baber/WOPTO huggingface dataset:
Patent GB-1485480-A (GB)
Title: Light-activated semiconductor-controlled rectifier
IPC: H01L31/111
Filed: 1974-12-23
Abstract: 1485480 Light-triggered thyristors HITACHI Ltd 23 Dec 1974 [24 Dec 1973 7 Jan 1974] 55565/74 Heading H1K In a light activated controlled rectifier comprising a body with a PNPN zone structure in which portions of one outer and the adjacent inner zone are exposed at one face of the body and portions of the other outer and the two inner zones exposed at the opposite face, a first electrode contacts at least said other outer zone at said opposite face, and a second electrode contacts at least said one outer and the adjacent inner zone at said one face, a phototrigger signal is directed on to a part of said adjacent inner zone exposed at said one face, the construction being such that the generated photocurrent flows is that zone first towards the opposite face and then parallel to the PN junction it forms with said other outer zone to a point where the junction intersects said opposite face. In the arrangement shown in Figs. 1 and 2 oppositely poled PNPN sections are designated 14 and 15. In operation, with the centre junction J3 of section 14 reverse biased, carriers generated there by the optical triggering signal from 4 separate to alter the potential of the adjacent part of zone P1, causing electron injection across it into zone N3 the potential of which is thus altered to encourage hole injection from zone P2 and so on. For the opposite bias polarity the holes optically generated at junction J4 in section 15 flow via channel 16 and then between junctions J4 and J3 to electrode 2 thereby increasing the forward bias on part of junction J2 to cause electron injection across zone 13 into zone N3 thereby altering its potential to initiate hole injection from zone P1 in section 15 and so on. Interference between the two sections is limited by the fact that the projections of zone N2 and zones N1 and P1 do not or hardly overlap. Light sensitivity may be improved by increasing the area of channel 16 available for exposure to light at and adjacent upper surface 11 (Figs. 4 and 5, not shown). Erroneous firing which can occur on commutation in high current devices and at fast switching rates can be reduced by providing channel 16 with lateral extensions to divide zone N3 into two sections allocated to PNPN section 14, 15 respectively, with consequential division of zones P1 and electrode 2 (Figs. 6 and 7, not shown). In a variant of this (Figs. 8 and 9) the laterally extended channel is itself split into sections by an N type isolating region which is extended so as to completely surround sections 14 and 15, with region N2 restricted to section 15, the photogenerated holes generated at junction J4 having to flow to electrode 2 parallel to junction J2 on account of the insulating layer 6. A lightactuated unidirectional PNPN switch operating on similar principles is also described (Figs. 10 and 11, not shown).
Patent GB-1454938-A (GB)
Title: Rotary piston internal combustion engines
IPC: F01C11/00
Filed: 1974-12-23
Abstract: 1454938 Output drive from rotary positive displacement devices AUDI NSU AUTO UNION AG and WANKEL GmbH 23 Dec 1974 [24 Dec 1973] 55590/74 Heading F1F [Also in Division F2]  Power from a two cylinder I.C. engine of the trochoidal type is taken off the crank-shaft 6 by a gear 11, an intermediate gear 12 and a further gear 13 which are housed in a hollow wall 4 of the engine between the two cylinders. The gears are lubricated by oil passing through openings 15 in the adjacent side walls of the engine and this oil returns to a sump (not shown) in communication with the space 16 in which the gears 11, 12, 13 are located. The engine has a clutch 19 and gear-box 20, and the crank-shaft 6 may be in one piece with the gear 11 machined on a portion intermediate the two eccentrics 7.
Patent GB-1139340-A (GB)
Title: Treatment of herring roe
Inventor: MOTOHIRO TERUSHIGE
IPC: A23B4/023
Filed: 1966-12-15
Abstract: 1,139,340. Preparing hard herring roe. MITSUI & CO. Ltd. 13 Dec., 1967 [15 Dec., 1966], No. 56211/66. Heading A2D. A process of preparing edible hard herring roe from the ovaries of Clupea harengus oceanis or Clupea harengus harengus comprises soaking the ovaries in saturated brine until the ovaries are solidified and then washing the solidified ovaries free from excess salt, e.g. by using fresh water containing butylated hydroxyanisole and sodium tripolyphosphate. Preferably the ovaries are washed with sea water to remove blood and waste material before being soaked in the brine. The hard roe may be packed in polyethylene bags.
Patent GB-1420488-A (GB)
Title: Apparatus for lifting and tipping vessels
IPC: B65G47/90
Filed: 1973-12-05
Abstract: 1420488 Tipping portable containers ALBERT HANDTMANN 5 Dec 1973 [6 Dec 1972] 56275/73 Heading B8E [Also in Division F2] Apparatus for lifting a wheeled truck 3 and for tipping its contents into a raised funnel 2 comprises an arm 8 swivelable about an axis 7 and having a truck supporting frame 11 rotatable about an axis 9 between the positions 3<SP>1</SP>, 3<SP>11</SP> in Fig. 1. The arm 8 is driven by a chain drive 15 actuated by a piston cylinder device 22, 26 connected between the ends of the chain. The frame 11 is mounted on a shaft 10 which can be driven by the chain 15 passing over teeth 16 but by gearing which is locked during movement of the arm 8 over the arc α so that the truck remains horizontal up to the position 3<SP>1</SP> but is unlocked so that over the arc # the chain drives the shaft 10 to tip the support 11 and truck 3.
Patent GB-1286869-A (GB)
Title: Improvements in containers
Inventor: MALONE C E
IPC: B05B9/08
Filed: 1969-12-01
Abstract: 1286869 Liquid pumps AFA CORP OF FLORIDA 1 Dec 1969 [29 Nov 1968] 58569/69 Heading F1A The liquid container 12, of e.g. a spray device 10, is closed by a screwed in cover 14, the cover or container being provided with an annular rib 70 which is an interference fit with a cylindrical surface on the container or cover, thereby to provide a seal which prevents egress of liquid but allows ingress of air. The cover 14 has a depending skirt 50 carrying threads 52 at its upper portion and a lower reduced thickness portion 68 forming the cylindrical surface or having the rib 20 integral therewith. The spray device comprises a pump cylinder 18 depending from the cover 14 and containing a piston 16 fixed by a rod 20 to a spray head 22. Manual depression of the head 22 sucks liquid up a diptube 28, past a non-return valve 30 into a cylinder chamber above the piston 16. Thus liquid is stored in the chamber under the pressure of a spring 32 until released by the opening of a valve 40.
Patent GB-1354928-A (GB)
Title: Optical frequency oscillators
IPC: H01S3/063
Filed: 1971-12-17
Abstract: 1354928 Parametric devices WESTERN ELECTRIC CO 17 Dec 1971 [22 Dec 1970 25 March 1971] 58603/71 Heading H3X [Also in Division H1] In a laser or optical parametric oscillator, the equivalent of an optical resonator formed by reflectors is provided by spatially periodic perturbations of refractive index, gain or propagation constant along the optical axis of the active medium. A laser is shown in Fig. 2 in which the active medium comprises a dichromated gelatine film 21 impregnated with a laser dye such as Rhodamine 6G, the film being deposited on a glass substrate 22 and pumped by ultraviolet radiation from a nitrogen laser 24. Spatially periodic perturbations 23 of refractive index are provided in the film, the perturbations being established by subjecting the film to an interference pattern obtained between two coherent ultraviolet beams, which may be derived from a He-Cd laser, the pattern being fixed by developing the film. In a second embodiment, Fig. 3, a neodymium YAG active medium 31 has a spatially periodic pattern of refractive index charge induced by interference between two angularly disposed beams from coherent pumping sources 32, 33, variation in the angle # between the beams causing a corresponding change in the periodicity of the perturbations and therefore of the wavelength to which the active medium is tuned. Wavelength selection can also be effected by selecting the constituent proportions of a dye active medium consisting of Rhodamine 6G in a solvent of methanol and benzyl alcohol. Periodic spaced pumping energy variations can also be obtained by the use of an optical grating between the pump source and the active medium, Fig. 4 (not shown), or by the use of a current mask 53 in a semi-conductor laser, Fig. 5, which restricts current flow between an electrode 54 and the semi-conductor body 51 to periodically spaced apertures 56, both arrangements producing a periodic variation of gain. Spatially periodic variation of the propagation constant of the active medium is obtained in Fig. 6, in which an active medium 61 of neodymium doped glass on a substrate 62 has parallel dielectric loading strips 64 of glass on its surface. In a modification, Fig. 7 (not shown), the thickness of the active medium has a spatial periodic variation of thickness. A parametric oscillator is shown in Fig. 8, and comprises an active member 81 of lithium niobate end pumped by a krypton ion laser and having a refractive index change along its length, the refractive variation being produced by interference between the converging beams of two auxiliary lasers 83, 84, e.g. argon ion lasers. A single auxiliary laser with a beam splitter and optical scissors may alternatively be used. The wavelength of refractive index variation may be selected to resonate the idler wave, in which case ultraviolet pumping radiation is used. Alternatively the signal frequency alone or both the signal and idler frequencies may be resonated.
Patent GB-595951-A (GB)
Abstract: 595,951. Lamp-holders. COLE, Ltd., E. K., and THORNDYCRAFT, H. W. July 11, 1945, No. 17653. [Class 38 (i)] A socket for a two-pin tubular electric lamp is formed of insulating material and consists of a base 1 and perpendicular to it a hollow limb 2 in the wall of which is formed a central slot 9 branching into arcuate slots 10 and 11, each of which has its centre of curvature at the inner end of the other, where the ends of contact springs 3 and 4, fitting snugly into mouldings within the base 1 may engage the lamp pins in their working position symmetrically about the centre of limb 2, to which a cover 7 is screwed. When the lamp is inserted, pin 12, for example, enters the central slot 9 and is moved to the inner end of slot 11 ; the lamp then being pivoted about pin 12 and pin 13 moving to the inner end of slot 10. Alternatively, pin 12 may enter slot 10 and pin 13 may move into slot 11, the lamp being pivoted about pin 12. The shaped ends of springs 3 and 4 lock the lamp pins in position. To withdraw the lamp from the socket, it may be rotated in either direction about the appropriate pin, without damage to the pins. In a modification (not shown), the U-shaped extension 14 is removed, leaving a triangular central space ; the lamp pins being guided into position by the outer edges of slots 10 and 11.
Patent GB-1261189-A (GB)
Title: Cartridge-loading motion picture projector
Inventor: ROMAN ROBERT JUSTIN
IPC: G03B21/32
Filed: 1968-12-20
Abstract: 1,261,189. Cine projectors. EASTMAN KODAK CO. Dec.20, 1968 [Dec.22, 1967; Nov.20, 1968(2)], No.60660/68. Heading G2E. A cine projector using cartridges is adapted to receive cartridges of different capacities and comprises recesses 23 which locate a cartridge 19 by engaging complementary ridges 22 such that film threading members may extend through slot 28 in the projector and enter the slotted base 27 of the cartridge, and that supply reel spindle 17 may enter the cartridge to rotatably support the reel within, spindle 17 being mounted on an arm 44 manually pivotable about drivable shaft 47 whereby spindle 17 may engage reels of different radii. Spindle 17 may be driven for re-winding in position of arm 44 by means of pulleys 55, 57 and belt 56. Spindle 17 is carried on a support 39 pivotable about shaft 41 on arm 44 against spring 71 to engage detents 67, 67a, 67b in plate 63 corresponding to operative positions of the spindle. Two alternative movable spindle mountings are described with reference to Figs. 7 and 9 (not shown).
Patent GB-1380049-A (GB)
Title: Automatic and continuous ultrasonic flaw detecting process
IPC: G01N29/04
Filed: 1971-12-30
Abstract: 1380049 Ultrasonic inspection devices NIPPON KOKAN KK 30 Dec 1971 [30 Dec 1970] 60865/71 Heading H4D A hot-rolled plate is tested for flaws by ultrasonic probes which scan each edge of the plate and intermediate regions, the probe movements being in an automatic sequence and correlated with movement of the plate. In the Fig. 1 embodiment, the test sequence is as follows. The plate 5, guided by fixed guides 7c, 7d and movable guides 7a, 7b, is moved longitudinally until its leading edge abuts a stop 6, which is then lowered. Guides 7a, 7b are urged against the plate edge and, in conjunction with computer 9, serve to gauge the plate width. A probe 3b is then moved laterally to align it with the plate edge, under the control of computer 9. Gating circuits associated with the probes are now adjusted with the aid of a cathode ray tube and probe 1 is moved to scan the leading edge of plate 5. Plate 5 is then advanced, its side edges are tested by probes 3a, 3b, and its central region is tested by a group of probes 4 selected according to the plate width as measured by computer 9. Stop 6 is raised again and plate 5 is moved back to abut it, whereupon probe 2 is moved to scan the plate trailing edge. Pulse-echo testing by the probes is envisaged.
Patent GB-1247222-A (GB)
Title: A method for manufacturing acrylonitrile polymer filaments
Inventor: TANAKA MAKOTO
IPC: D01F6/18
Filed: 1968-12-30
Abstract: 1,247,222. Making acrylonitrile polymer filaments. MITSUBISHI RAYON CO. Ltd. 30 Dec., 1968, No. 61782/68. Heading B5B. Acrylonitrile polymer solutions are wet spun or dry spun to form filaments which are stretched, in hot water, washed either before, during or after the stretching operation and dried in a state having a moisture regain higher than 15% while they are relaxed in a humid stream of air or other gas maintained at a dew point within the range of from 45‹ to 100‹ C. and a dry bulb temperature within the range 130‹ to 180‹ C., whereby voids within the filaments which formed during the spinning step are caused to collapse, the period of the drying operation being long enough to allow this collapse to occur. The heat shrinkage of the filaments during the relaxation and drying step may be 15 to 30%. If the filaments are formed by wet spinning the moisture regain of the gaseous medium in the relaxing and drying zone may be higher than 50%. The stretched filaments may be subjected to a pre-shrinkage treatment before supplying them to the relaxation and drying zone. The total shrinkage of the filaments after the relaxation and drying step may be 18 to 35%. The filaments may be mechanically crimped prior to the relaxation and drying treatment. The solvent content of the filaments before the relaxation and drying treatment is preferably below 3À0% by weight and more preferably below 1À5% by weight. In a set of examples furnished the spinning solution contains 20À5% by weight of the polymer and is prepared by dissolving a copolymer of 95% by weight of acrylonitrile and 5% of vinyl acetate in dimethyl formamide. The solution is wet spun into an aqueous coagulating bath containing 40% by weight of DMF and maintained at 30‹ C. The filaments thereby formed are washed and stretched in water at 100‹ C. at a stretch ratio of 5À0 and then oiled. The moisture regain of the oiled filaments in a swollen gel condition is adjusted to 120%. The relaxation and drying treatment of the filaments is effected in air maintained (in different examples) at 140‹ and 160‹ C., the dew point of the air ranging from 59‹ to 100‹ C., the treatment being applied for 10 minutes. The filaments shrink about 19 to 28% during the treatment. In a different example a similar spinning solution is dry spun in to air maintained at 220‹ C., the taken-up filaments thereby formed containing about 9% by weight of the solvent. The filaments are then treated in a manner similar to that employed in the previous examples.
Patent GB-1247257-A (GB)
Title: Linear induction motor directing system
IPC: B60L13/00
Filed: 1969-12-19
Abstract: 1,247,257. Electric railways; switches; track selection. LINERAIL MANUTENTION PAR MOTEUR LINEAIRE. 19 Dec., 1969 [26 Dec., 1968], No. 62026/69. Heading B7L and B7N. In a conveyer system in which a suspended load-carrying vehicle 22 mounted on pairs of wheels 18, 20 runs on a trackway defined by flanges 14, 16 of a beam 12 and is guided by rollers 24, 26 running in the space between the flanges, the vehicle is guided and propelled over a junction to a selected track by a linear motor arrangement. In the system shown the linear motor arrangement is the only form of drive and comprises field elements 30, 30<SP>1</SP> with polyphase windings 34, 34<SP>1</SP> on the vehicle and side plate armatures 32, 32<SP>1</SP> of magnetic material, with which plates 38, 38<SP>1</SP> of conductive material are associated, extending along the walls of the track support beam. Assume the vehicle has to be routed over the junction to branch track 48 the power supply picked up by brushes 42 from bus-bars 44 is interrupted to the windings 34<SP>1</SP> of element 30<SP>1</SP> thus the forward propulsion force F2 is reduced and an out of balance force F1 at right angles to the forward force urges the truck towards the armature 32 and guides it to the required track.
Patent GB-661054-A (GB)
Abstract: 661,054. Spray producers. BIGINELLI, O. F. A. April 4, 1949. No. 9139/49. Class 69 (iii). A liquid atomizing device comprising a resilient diaphragm 25 adapted to be forced by a thrust member 26 against a seat having an orifice therein which communicates with a liquid admission duct 6 is characterized in that said seat, orifice, thrust member and resilient diaphragm are coaxial and the thrust member has a bearing surface of considerably larger area than that of the orifice of the admission duct. Liquid under pressure enters the tube 9 through a strainer 10 and passes through a passage 6 in a body 1 ending in the centre of a convex surface 4. The diaphragm 25 is held by a nut 19 in a tapped hole 3 and is deformed by the thrust member 26, actuated by a screw 28, to control the flow of the liquid which continues through a passage 8, round the thread of a loosely fitting stub screw 11 in a tapped hole 5 and through a nozzle 17 in a head 14 which is screwed in on top of the stub screw. In a modification, Fig. 3, the stub screw and head are replaced by a head 31 with a nozzle 32 through which extends a needle 33 held in position by an integral spiral spring 34.
Patent GB-778800-A (GB)
Abstract: 778,800. Conical mills. ESCHER WYSS GES. March 20,1956 [March 21, 1955], No. 8682/56. Class 59 A conical pulping mill or like machine for preparing fibrous material comprises guiding means 8, 9 built into the housing 5 of the machine and so arranged that material entering the machine at 6 is led downwardly and then diverted upwardly again before being treated, so that heavy foreign matter e.g. stones, iron articles, separates out at the turning point. In the form shown in Figs. 1 and 2, the guiding means comprise an annular member 8 having depending legs 9 and an opening 7. The foreign matter drops into a collecting bin 10 provided with covers 11 which may be opened. A grid-like, apertured or slotted plate 12 is provided on the rotor shaft 2 in the path of flow of the material after its upward diversion and is kept clean by means of a stationary scraper 13. The housing 5 is axially adjustable relatively to the rotor 1. In a modification, Fig. 3 (not shown), an apertured plate is built into the opening of the guide means. In a further modification, Fig. 4, the downwardly-directel material before being diverted upwardly is diverted in an axial direction by means of walls 16 provided in the lower portion of the housing 5.
Patent GB-782233-A (GB)
IPC: H03K23/82
Abstract: 782,233. Electronic counting circuits. GENERAL ELECTRIC CO. Oct. 18, 1955 [Oct. 19, 1954], No. 29718/55. Class 106 (1). In an electronic counting circuit comprising a plurality of cascaded bi-stable stages with coupling means between each stage and its succeeding stage so arranged as to enable the circuit to function as a binary counter, and means for supplying shift pulses to each stage, the coupling means are such that, on receipt of shift pulses, they function to cause each stage to assume the state of an adjacent stage. In the described embodiment each trigger element of the counter comprises a pair of pentodes 12, 13 having anodes 14 and suppressor grids 20 cross connected so that only one valve can remain conductive when the circuit is stable. Each negative pulse applied via capacitor 28 and resistors 29, 30 to both suppressor grids causes a change from one stable state to the other and each time the L.H. valve 12 becomes conductive a negative pulse is sent from its anode to trigger the next stage. In addition to its function as a counting chain the circuit can perform as a shifting register. Negative shift pulses on a line 27, applied simultaneously to the control grids of all the valves, find capacitors 33 connected between earth and a potentio. meter formed by resistors 31, 32 from the anode of one valve of a trigger pair to the control grid of one valve of the next trigger pair, either (i) charged or (ii) not charged according to whether the anode of the valve to which they are connected is (i) non-conductive or (ii) conductive, respectively. If (i) non-conductive, then the negative shift pulse has no substantial effect on the control grid to which it is applied being dissipated in discharging the capacitor 33. When the connected anode is (ii) conductive, however, the negative shift pulse drives the connected grid sufficiently negative to ensure that that valve will be left in a non-conducting state at the end of the shift pulse. In other words, the state of each stage will be transferred to the respective succeeding stage by the application of a shifting pulse to all the control grids. The arrangements of resistors 31, 32 and capacitors 33 constitute integrating delay circuits which prevent any secondary triggering effects. The longer duration of the shift pulse prevents spurious results due to the arrival of a counting pulse during a shifting operation. Other forms of trigger element such as magnetic amplifiers, transistors, thermistors, relays, &c., could be employed.
Patent GB-2006412-A (GB)
Title: Heat Treatment of Materials
IPC: F27B9/26
Filed: 1978-10-13
Abstract: A method of heat treatment of materials which release gases and/or vapours during the treatment comprises applying heat (e.g. hot combustion gases) to a charge of the material, directing flows of added (preferably pre-heated) gases and/or vapours from positions above the charge to produce a mixture of the released and added gases and/or vapours at a position above the charge. Preferably the charge of materials is moved successively to subject it to zones (K-M) of underheating and/or topheating, and preferably at least a portion of the charge is subsequently oxidised by causing a flow of oxygen or oxygen containing gases over the charge. The apparatus comprises a furnace (K-N), a treatment path through the furnace, means (14) in the treatment path for supporting a charge of the material and means (17) for directing flows of added gases and/or vapours into the furnace from positions above the charge, the directing means being arranged substantially transversely of the treatment path. <IMAGE>