baber/WOPTO huggingface dataset:
Patent GB-1534343-A (GB)
Title: Well-treating process
IPC: E21B43/25
Filed: 1976-02-16
Abstract: 1534343 Acidizing wells SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 16 Feb 1976 [18 Feb 1975] 05987/76 Heading E1F A process for a well that opens into an oil-productive relatively unconsolidated siliceous underground formation to increase the rate at which fluid is produced from the well in response to a draw-down that causes a selected relatively high rate of fluid production from the well when the well productivity is unimpaired, which process comprises the consecutive steps of: establishing a production-configuration of flow channels in the formation for conveying fluid from within the formation to within a production conduit in the well; injecting into the well, at a rate of flow that is controlled to keep it low enough to avoid any significant disruption of the production-configuration of the flow channels, a slug of each of a liquid oil solvent, a relatively dilute aqueous acid that is free of hydrogen fluoride and is capable of dissolving calcite, and a relatively dilute aqueous acid that contains hydrogen fluoride and is capable of dissolving silica; and gradually reducing the fluid pressure within the borehole relative to that within the formation at a rate such that at least 30 days are required for the magnitude of the draw-down or rate of fluid production to substantially equal the magnitude of the drawn-down or rate of fluid production corresponding to the selected relatively high rate of fluid production from the well. Preferably the liquid oil solvent is xylene, kerosene, diesel oil or mixtures thereof, the dilute aqueous acid which is free of hydrogen fluoride is hydrochloric acid, formic acid or acetic acid, and the dilute aqueous acid that contains hydrogen fluoride is an aqueous solution of hydrochloric and hydrofluoric acids or an aqueous solution of a fluoride salt and a relatively slowly reactive acid-yielding material.
Patent GB-1396951-A (GB)
Title: Airtight dispenser to carry a roll of material of damp  synthetic paper or similar material
IPC: A47K10/38
Filed: 1972-02-09
Abstract: 1396951 Roll holders H J CADDICK 23 Jan 1973 [9 Feb 1972] 6043/72 Heading A4G A dispenser for a roll of pre-damped material comprises an inner half-cylinder 3 with tear-edges 7 and a revolvable roll supporting spindle 4 removably supported by a bush 2 passing centrally through one end 1 of the cylinder and by a fixed bush 6 on resilient end-cap 5, the inner cylinder telescoping in an outer cylinder closed at one end with an inner retaining ridge at the other open end to prevent the inner cylinder being completely removed, the cap 5 engaging and sealing over the open end to keep the roll damp.
Patent GB-1263334-A (GB)
Title: Focal plane shutter system
Inventor: BROWNING IBEN
IPC: G03B9/08
Filed: 1969-02-05
Abstract: 1,263,334. Light modulators. I. BROWNING. 5 Feb., 1969 [7 Feb., 1968], No. 6086/69. Heading H4F. [Also in Divisions G2-G3]. A shutter system includes a plate 11, Fig. 1, of ferro electric ceramic material having an anisotropic optical response when polarized e.g. hotpressed lead zirconate-lead titanate ceramics, a plurality of electrodes positioned across the area of the plate for applying electric polarizing fields to localized portions 12 of the plate, and control means 18 for electrically controlling the polarizing fields applied to the electrodes for shuttering and selectively transmitting light falling upon the plate. The plate is located in the focal plane of an optical system formed by objective lens 16, Fresnel field lens 17 and a first lens mosaic 13 which focuses individual points of an object 15 on to the portions 12 of the plate. A second lens mosaic forms a reconstituted image in the plane of a photographic film 20. Alternatively, Fig. 2 (not shown), the film may be in contact with the plate 11. For high speed moving pictures, the exposure streaks produced by each of the lens of the lens mosaic are non-overlapping with those of any other lens by suitable orientation of the lens mosaic with respect to the film. Each individual portion 12 of the plate has four electrodes 30, 31, 32, 33, Fig. 3, disposed so as to permit switching the polarizing field normal 36 or parallel 35 to the major surface of the element.
Patent GB-622166-A (GB)
Title: Improvements in and relating to the coupling of agricultural implements to tractors
IPC: B60D1/46
Filed: 1947-03-04
Abstract: 622,166. Hydraulic remote control systems. FORD MOTOR CO., Ltd., MORRIS, R. P. W., and RONAYNE, M. March 4, 1947, No. 6165. [Class 69 (ii)] [Also in Groups XXXI and XXXII] In a coupling between a tractor and an agricultural implement, in which the implement is connected to the tractor by a linkage which includes a compression member, this member is formed as a two-part link or strut comprising a piston operating in ahydraulic cylinder, which, when the pressure reaches a predetermined maximum, due for instance to the implement meeting an obstruction, collapses and throws out the engine clutch. In Fig. 2, the two-part strut 2, 5 comprises a plunger 3 movable in a cylinder 1 supplied with liquid from a reservoir 7 through a non-return valve. When the liquid in chamber 8 is compressed above the predetermined maximum pressure, a ball valve 15 is opened which allows liquid to pass by passage 15b to a space 11 behind the plunger. Owing to this action and the difference in area between ball valve 15 and its loading plunger 16, a reduced pressure in chamber 8 is now sufficient to allow movement of the plunger 3. Further movement of plunger 16 opens port 20 so that liquid may pass by connection 21 to a separate hydraulic piston and cylinder unit, shown in Fig. 6, having a rod 24 connected to the tractor clutch lever. In order to re-engage the clutch, a lever is provided which operates a cam 26 to raise the non-return ball valve 25 to allow liquid to flow back to the transmitting unit.
Patent GB-462779-A (GB)
Title: Improvements in and relating to thermionic discharge devices
IPC: H01J19/28
Filed: 1936-03-02
Abstract: 462,779. Thermionic valves. FARNSWORTH TELEVISION, Inc. March 2, 1936, No. 6259. Convention date, March 13, 1935. [Class 39 (i)] The anode 9 consists of a film which is burnt into the internal surface of the vitreous envelope 2. Connection to the anode is effected through the wire 7 and the button 8. The film may be deposited from a vapour or by the use of a platinizing solution and may be provided with one or more metal coatings. The tube is mounted within a cooling jacket through rubber gaskets 16, 17. Water or insulating liquid may be used for cooling and may be supplied and discharged through coiled pipes to increase the electrical resistance between the anode and the water source.
Patent GB-836138-A (GB)
Title: Improvements in and relating to dip-soldering
Inventor: HOWARD DONALD
IPC: H05K3/34
Filed: 1957-02-25
Abstract: In a method of dip-soldering a printed circuit, those portions of the metallic surface of the circuit which are not to be tinned are treated chemically so as to provide thereon a film of a compound of the metal, the compound being resistant to tinning, and molten solder is then applied to the circuit to tin the portions of the metallic surface not protected by the film. Specifically disclosed is the making of a soldered connection between an aperture in the copper pattern of a printed circuit and a lead wire passing through the aperture, in which a mask having a fluxing action is applied over the portion of the copper surface which is to be tinned (i.e. around the aperture), the remainder of the circuit is oxidized by dipping into cold potassium polysulphide solution, the lead wire is passed through the aperture, and the connection made by fluxing and dip-soldering.
Patent GB-1454594-A (GB)
Title: Ovens
IPC: F24C15/32
Filed: 1974-02-12
Abstract: 1454594 Broiling L C A CORP 12 Feb 1974 [23 May 1973] 06339/74 Heading A4D [Also in Division F4] A cooking oven comprises a cooking chamber 22 a heating chamber defined by a wall 32 having an air deflecting portion 33 and a perforated plate 68, and a centrifugal impeller 66 and an electrical resistance heating element 64 within the heating chamber, wherein the wall portion 33 is spaced inwardly from the side walls of the oven to produce turbulence in the air-flow passing from the heating chamber to the cooking chamber 22 and food is radiantly heated via the apertures in plate 68. The air inlet to the heating chamber is provided by a filter 62 removably mounted on plate 68. The distance between plate 68 and wall 32 is between ¢ and 1 inches, and the portion 33 forms with wall 32 an angle between 100 and 135 degrees. A food supporting rack having V-shaped legs 58 is supported on protrusions 59 or on a drain pan 54 having a cover 55 with slots 57. The sheet 68 may be made of expanded metal. A thermally insulating air space 46, 36, 44 may be sealed or include slots 50, 52, 48 for convection air-flow. The impeller 66 is driven by a motor 72 which also drives a motor cooling fan 76. The oven is controlled by a thermostat acting on heating element 64 and a timer. The walls of the chambers may be coated with a catalytic material for continuous self-cleaning.
Patent GB-914226-A (GB)
Title: Tape applying machine
Inventor: GUTHRIE GEORGE
IPC: B65B51/06
Filed: 1957-11-25
Abstract: 914,226. Applying adhesive tape. GUTHRIE, G. Feb. 25, 1959 [Nov. 25, 1957; Aug. 21, 1958], Nos. 6358/57 and 26881/58. Divided out of 914,225. Class 73. A machine for supplying pressure-sensitive adhesive tape in U-form to packages has a tapeapplying member 3 or 33, displaceable by the leading face of a package 21, 22 and a follower member 19 or 38, for applying the tape to the retreating face of the package, said members being carried on supports on spaced apart pivots 5-15 or 35-36, yoked by links 20 or 41-42 in the plane of the pivot axes and urged apart by springs 17 or 40; tape-reversing means 7 or 43 being situated between the said members. Tape from a reel 6 or 32 goes over guide rollers 13 or 51 and lies on the applying member with its adhesive face exposed towards the package. The package or packages 21-22, moved by hand along a guide rail 1 or advanced along a conveyer 31 receive a length of tape on their forward face. The applying member is then deflected by the packets leading edge trails along its side face applying tape and continues still deflected beyond. The backing member is linked to the applying member and moves back similarly. The arms carrying the severing means 7 or 43 also trail along the side face, but when they reach the rear edge of the package they are swung forward about their pivots by a spring 8 or by a counterweight 44 to cut the tape. This frees the applying and backing members which are then urged out by their springs, the motion of the backing member serving to apply the severed end of the tape to the retreating rear face of the package. The tape may be severed by a knife 10 or an electrically-heated wire (Fig. 7, not shown). A spring-operated cutter, latched by a roller on a moving conveyer and triggered by the package is also described. The heated wire cutter is similar to that described in Specification 914,225, from which this Specification is divided.
Patent GB-746548-A (GB)
Title: Improvements in or relating to supply cathodes
IPC: H01J1/28
Filed: 1954-03-04
Abstract: 746,548. Cathode materials. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R. T. March 4, 1954 [March 4, 1953], No. 6375/54. Class 39 (1). In a supply cathode in which the active material consists of an alkali or alkaline earth metal, or compounds thereof, the porous sintered body forming the emissive surface contains at least one of the platinum group of metals. It may be of platinum alone, or alloyed with other metals. Suitable examples given are: 50 per cent platinum and 50 per cent nickel; 95 per cent platinum and 5 per cent iridium; or 10 per cent platinum, 40 per cent nickel and 50 per cent tungsten. Alternatively, a tungsten body may be coated with platinum. Specifications 289,763 and 311,705, [both in Class 39 (i)], are referred to.
Patent GB-1410191-A (GB)
Title: 3-chloro-1-aryl-2-pyrazolines
IPC: C07D231/06
Filed: 1972-02-10
Abstract: 1410191 3-Chloro-1-aryl-2-pyrazolines MINNESOTA MINING & MFG CO 6 Feb 1973 [10 Feb 1972] 6383/72 Heading C2C 3-Chloro-1-aryl-2-pyrazolines of the general formula in which R<SP>1</SP> to R<SP>4</SP> are each H, unsubstituted alkyl, unsubstituted aralkyl or unsubstituted aryl and R<SP>5</SP> is unsubstituted or substituted aryl, are prepared either (a) by treating a 1-aryl- 2-pyrazolidin-3-one of general formula with anhydrous PCl 3  or (b) treating a 1-aryl-2- pyrazolidin-3-one of general formula with POCl 3  under substantially anhydrous conditions in the presence of an organic base, neutralizing and extracting the desired product with boiling methanol. Compounds produced from reaction (b) are novel.
Patent GB-364919-A (GB)
Title: Device for the connecting of branch wires on power current lines
IPC: H01R11/22
Filed: 1931-03-02
Abstract: 364,919. Couplings. EGGLER, A., Samstagern, Zurich, Switzerland. March 2, 1931, No. 6474. [Class 38 (i).] A temporary branch line 16 is connected to a power line 17 by means of a contact 10 carried on an insulating body 1 and held in engagement with the line 17 by a spring-pressed lever 4, mounted in a recess 2. The contact 10 is formed with extensions 12 and is connected by a screw 11 to a nut 14 to which the lead 16 is attached by a screw 15.
Patent GB-971288-A (GB)
Title: Improvements in or relating to the production of magnesium
IPC: C22B26/22
Filed: 1963-02-18
Abstract: Magnesium is produced from a feed comprising magnesium oxide or a magnesium silicate, or a substance containing magnesium oxide or silicate, e.g. dolomite or magnesite, by thermally reducing the feed, preferably first calcined or preheated, at a temperature of between 1000 and 1300  DEG C. with calcium vapour evolved by the decomposition of calcium carbide, e.g. at 1600-2000  DEG C., in an electric arc furnace, the magnesium vapour obtained being condensed to liquid or solid in a condenser. The feed may contain or have added to it a substance, e.g. iron oxide, exothermically reacting with the calcium vapour to produce non-volatile or volatile reaction products which do not interfere with the magnesium reduction process. The calcium vapour may be conducted through a feed in lumpy form or over a feed in finely divided form.  The reduction may be effected in a vacuum or in an inert gas stream carrying the calcium vapour.  Pure graphite is separated from the decomposition of the calcium carbide.
Patent GB-973722-A (GB)
Title: Improvements in or relating to semiconductor devices
IPC: H01L27/10
Filed: 1962-02-20
Abstract: 973,722. Semi-conductor devices. PHILCO CORPORATION. Feb. 20, 1962 [Feb. 20, 1961], No. 6511/62. Heading H1K. A semi-conductor circuit assembly is produced by providing contacts on the semiconductors and forming a solid insulating surround on the semi-conductor surface so that the contacts and surround form a common planar surface and then depositing conductive material on the surface to form electrical connections. Fig. 2 shows an assembly comprising 5 tunnel diodes connected in series between outer terminals 86 and 88. Each diode comprises a contact 38 associated with a PN tunnel junction and an ohmic contact 40 on a P-type layer 36 which extends over a high resistivity N-type semi-conductor body 34. The body 34 is bonded by insulating layer 92 to metal baseplate 90. The device may be produced by subjecting an N-type gallium arsenide single crystal to zinc vapour to form a P-type surface layer 0.1 mils. thick and having about 10<SP>20</SP> centres per c.c. Tin is then deposited on the P-layer through a mask and indium-cadmium pellets alloyed to the semi-conductor material through the tin layers where ohmic contacts are desired and tin pellets (which effect conversion to N-type conductivity) through the tin areas where rectifying contacts are desired. The wafer 34 is bonded by means of a glass or beryllium oxide layer 92 to aluminium heatconducting base-plate 90 and nickel bars 86 and 88 are similarly bonded to 90. Channels 60-67 are cut through P-layer 36 to isolate each diode pair. After cleaning, the body and bars 86, 88 are embedded in an epoxy resin surround 70 (Fig. 8) and after hardening, the assembly is subjected to a lapping or milling operation to remove parts of the resin surround and contacts to expose a plane surface A-A. The rectifying and ohmic connections are then interconnected by depositing aluminium and then nickel layers 72-82. The semi-conductor may be germanium or silicon, and surface barrier electrodes may be used in place of PN junctions.
Patent GB-370147-A (GB)
Title: Improvements in gas holders
IPC: F17B1/04
Filed: 1931-03-03
Abstract: 370,147. Gas-holders. WOOD, H., 6, Lyndhurst Avenue, Bredbury, near Stockport. March 3,.1931, No. 6539. [Class,54.] The sliding piston of a gas-holder is provided with an expansible sealing plate 4 attached by flexible metal sheets 3 to one end of an inverted U-shaped member or lute 1 which is suspended around the piston structure A. The other leg of the lute 1 dips into a tank C which is formed with apertures c communicating with the gas space below the piston. The pressure of the gas forces sealing liquid from the tank C up between the lute 10 and a plate 15 depending from the piston so that'it overflows into the trough 18, the head of sealing liquid and the pressure of the seal plates against, the wall of the holder varying with the gas pressure. The suspension means for the lute 1 comprise slotted brackets 12 secured by pins 13 to the piston structure and carrying pivoted rods 2, 10 which are pivoted at their lower ends to brackets 9, 11 on the lute. The rods 2 are formed with horizontal.pins 8 projecting into slots in brackets 7 on metal bars 5 welded, bolted, or clipped-to the sealing plates 4 so as to permit circumferential but not vertical movement of the sealing plates relatively to the lute. The bars 5 are also connected to the lute by U-shaped members 6. The lute is provided at intervals around its circumference with expansion members 19. Tapered filling members 18 may be provided adjacent the vertical stanchions of multi-sided holders.
Patent GB-962639-A (GB)
Title: Improvements in or relating to ducts connected together by flexible joints
Inventor: FRANKEL ADOLF
IPC: F16L27/111
Filed: 1960-02-24
Abstract: 962,639. Expansion joints. RICHARDSONS, WESTGARTH & CO. Ltd. Feb. 16, 1961 [Feb. 24, 1960], No. 6555/60. Heading F2G. In a connection between ducts 1, 2 conveying a gas or liquid under pressure or under partial vacuum, the ducts are joined together by a flexible joint comprising a tie composed of a number of tie members 7 in the form of bars, rods or strips anchored to each duct adjacent the end thereof and distributed round the duct peripheries at an inclination to the ducts, the tie also including a substantially rigid floating member 6 which is supported by the tie members away from the ducts so that there is ample clearance between the ducts and the floating member; the tie members are resiliently flexible to a certain extent and have the ends thereof held immovable on the floating member and at the duct anchorages so that angular displacement between the ducts causes flexing of the tie members between the ends thereof. As shown in Fig. 1, the ducts are connected by a bellows 3 which is prevented from overstrain due to angular movement by the provision of flanges 8 secured to the ducts and having shoulders between which is movably located a sleeve 10. Alternatively, the sleeve is so located on the ducts that opposing end faces of flanges 8 of uniform diameter replace the shoulders, or the flanges may be disposed internally of the ducts, the sleeve being located inside the bellows 3. Protection against torsional and shear forces is obtained by a sleeve 11, Fig. 5, provided with a projection or projections engaged in a recess or recesses in blocks 12, 13 or rings, or the sleeve is replaced by one or more torsion-resistant members such as metal bars; the flanges 8 and sleeve 10 may be modified to also prevent the bellows from being subjected to torsional and shear forces. In further arrangements, the ducts 1, 2, Fig. 6, are provided with arms 14, 16 the free ends 14a, 16a of which are connected by resilient rods 15, or the ends of the ducts are formed to provide a spigot and socket, the former having a dowel or key which engages in a slot in the socket. In modifications, (a) the floating member is in the form of a tube 6, Fig. 11, the members 7 crossing each other inside the tube, (b) the members 7 are connected to the tube 6 such that the axes of the members intersect at a single point inside the bellows 3, (c) the members 7, Fig. 13, are formed by a number of evenly-distributed slots 7a cut in the peripheries of frusto-conical parts 19, 20, and (d) the ring or tube 6 is located within the bellows 3, or a solid body is used, the axis of the members intersecting at the core of the body.
Patent GB-114066-A (GB)
Title: Improvements in Milling Machines.
Inventor: POOL HOWARD LESLIE
IPC: B23G1/32
Filed: 1917-05-09
Abstract: 114,066. Pool, H. L. May 9, 1917. Lathes.-A rotary-cutter machine comprises a headstock b transversely movable in guides box by a screw f, and supporting a spindle driven by the pulleys c<1>, c<2> and carrying a milling-cutter d supported in a steady-rest c. The work is carried by a chuck h<1> on a shaft h mounted in a rotatable head g and provided with a feed-screw k engaged by two fixed half-nuts k<1>. The head g is rotatably mounted by means of a pin g<1> in a hearing g<2>, and is locked in position during the milling operation by a catch m and a jam-screw n. The half nuts k<1> are held in engagement with the screw k by springs k<4> attached to arms k<3> on the half nuts, and are disengaged by means of a cam operated by the lever k<7>. During the milling operation, the shaft h is driven by the gearing l, l<1>. When the work is completed, the half-nuts are disengaged from the screw k, the shaft h is moved back by the rack h<2> and pinion i, the catch m and screw n are released, and the bearing g is turned on the pin g<1> to enable the work to be removed from the chuck.
Patent GB-957316-A (GB)
Title: Semiconductor devices
IPC: H01L21/00
Filed: 1961-02-23
Abstract: The following alloys (compositions by weight) are used in the manufacture of semi-conductor devices (see Division H1): 3-20% copper or silver, balance tungsten; 89% aluminium, 11% silicon; 1% antimony, 2% lead, balance silver; 1% antimony, balance gold; 1% antimony, 27% copper, balance silver; 10% tin, balance silver; 2% lead, 2% silicon, balance silver; 5% germanium, balance silver; 0.5% phosphorus, 27.5% copper, balance silver; 2% silicon, 98% gold; 2% tin, 98% gold; 1% boron, balance gold; 2% antimony, balance gold.  Specification 881,090 is referred to.
Patent GB-678429-A (GB)
Title: Improvements in refrigerator cabinets
IPC: F25D23/06
Filed: 1951-03-20
Abstract: 678,429. Refrigerators. BRITISH THOMSON-HOUSTON CO., Ltd. March 20, 1951 [April 4, 1950], No. 6648/51. Class 29 The refrigerant tubing 5 disposed adjacent the wall of a refrigerator cabinet in the space between the inner and outer walls 3, 2 is urged into heat exchange engagement with the wall by compressible heat insulating material 7 acting upon a sheet 6 of flexible heat - conducting material contacting the tubing. The invention may be applied to the evaporator tubing adjacent the exterior of the liner 3 or the condenser tubing adjacent the interior of the outer casing 2. The sheet 6 may be aluminium foil with a highly reflecting surface, and the insulating material compressed spun glass. The sheet 6 contacts the wall 3 between the tubes 5 and assumes a somewhat parabolic shape so that heat radiating from the wall is directed towards the tubes.