baber/WOPTO huggingface dataset:
Patent GB-1240007-A (GB)
Title: Improvements in the manufacture of printed circuit boards
IPC: C23C18/16
Filed: 1968-07-26
Abstract: 1,240,007. Printed circuits. GYLLING & CO. A.B. 26 July, 1968 [28 July, 1967], No. 35735/68. Heading H1R. [Also in Division C7] In the production of printed circuit boards having plated through holes the metal sensitizing layer deposited on the surfaces of the board during an electroless plating process is stripped off all the surfaces except the walls of the holes whereby metal in the subsequent plating step only forms on the walls of the holes. A synthetic resin impregnated paper or cardboard base member provided with holes is first cleaned in a solvent or electrolytically and rinsed. The board is then treated for three minutes in a solution of 50 g./l. of tin chloride and 60 ml./l. of hydrochloric acid so as to deposit a film of colloidal tin on the entire surface of the board. After rinsing, the board is in accordance with the invention treated in a solution of a salt of a complex metal compound such as basic lead carbonate and hydrochloric acid. The tin chloride reacts with the lead carbonate solution to form three non-soluble compounds and due to the difference in the liquid absorption ability of the surfaces of the board caused by the difference in surface roughness and the surface layers of the board being denser than the underlying layers of the material the tin chloride on the walls of the holes is more resistant to stripping than that on the main surfaces of the board. The treatment time is chosen such that the tin chloride layer is completely removed from all surfaces outside of the holes while leaving a sufficiently thick layer of tin chloride on the walls of the holes. After rinsing, the board is treated in a solution of 0À5 g./l. water of palladium chloride and 5 mm./l. hydrochloric acid to deposit a layer of palladium on the walls of the holes which serves as a base for a subsequent chemical and electrolytic plating of copper. Instead of palladium salts, platinum chloride, gold chloride, silver nitrate or rhodium chloride may be used.
Patent GB-1435223-A (GB)
Title: Cast resins reinforced with carbon-fibre material
IPC: A61B6/04
Filed: 1973-07-26
Abstract: 1435223 Radiological apparatus SIEMENS AG 26 July 1973 [27 July 1972] 35746/73 Heading H5R In an X-ray or gamma ray apparatus comprising a source of such radiation at least one component required to transmit the rays is made of cast resin, e.g. epoxy resin, reinforced with carbon fibres. The component can be a patient-supporting table, a housing for an image amplifier or spot-film device or a film cassette. In the case of a patient support this can be made of two sheets of the resin with a foam core between them. In Figs. 1 and 2 (not shown) the supports are respectively fixed and pivotable about axis (21).
Patent GB-1315184-A (GB)
Title: Valve operating mechanism
IPC: E21B43/00
Filed: 1970-07-23
Abstract: 1315184 Hydraulic reciprocating motors HAWK OIL FIELD EQUIPMENT CORP 23 July 1970 [28 July 1969] 35833/70 Heading F1A A mechanism for pivoting the control arm 51 of a reversing valve 53 controlling the supply of fluid to and from an hydraulic reciprocating motor comprises a rod 39 reciprocable by a part 42 driven by the motor, dogs 140, 141 adjustably fixed to the rod 39, and a snap-acting toggle mechanism 46 actuated by an input lever 50 pivotable out of the path of the dogs 140, 141 when struck thereby. The lever 50 has offset lugs 137, 138, each lug being engageable by only one of the dogs 140, 141. The toggle mechanism 46 includes a guide arm 94 pivotable at one end 98 about an axis 100 and a hollow swing arm 110 pivoted to the other end 97 of the guide arm 94. The swing arm 110 has a pin 130 engaged in a radial slot in the lever 50 and contains a spring 116 secured between a pin 126 fixed to the arm 110 and a bracket 120 adjustably positioned on a fixed bar 122. In the neutral position of the toggle mechanism 46, the spring 116 maintains the arms 94, 110 in axial alignment so that bars 106, 108 carried by the guide arm 94 locate the valve's control arm 51 in the neutral position. When the lever 50 is pivoted by one of the dogs 140, 141 it displaces the swing arm 110 from the neutral position, unbalancing the arms 94, 110, so that the spring 116 exerts a torque on the arms which causes them to snap to the upper or lower pivoted position.
Patent GB-1312299-A (GB)
Title: Insulated gate semiconductor device
IPC: H01L29/78
Filed: 1970-07-24
Abstract: 1312299 Insulated gate field effect transistor MATSUSHITA ELECTRONICS CORP 24 July 1970 [4 Aug 1969(3)] 35882/70 Heading H1K An IGFET includes a region of high impurity concentration, of the same conductivity type as the substrate, acting as an inversion channel stopper, with both ends of the gate electrode extending on an insulating film over the stopper region. In one embodiment a U-shaped source region 2 of n<SP>+</SP> type conductivity is diffused into a p type silicon substrate 1, and an n<SP>+</SP> drain region 3 formed between the limbs of region 2. A p<SP>+</SP> type region 9 is formed at the open end of region 2, and both ends of a gate electrode 5, situated on an insulating film 4, extend to this region. The inversion channel beneath the gate electrode of the device, which is of the "normallyon" type cannot therefore extend around the gate electrode, due to the region 9, and thus leakage from source to drain is prevented. In a second embodiment, the source and drain regions take the form of parallel, longitudinal, regions the gate electrode being situated in parallel between the regions, the stopper region being an annulus surrounding both source and drain regions, both ends of the gate electrode again extending to the stopper region. This embodiment is said to be useful in integrated circuits. In both embodiments a plurality of gate electrodes may be used.
Patent GB-1383150-A (GB)
Title: Instrument panels for motovehicles
IPC: B60K37/00
Filed: 1973-07-27
Abstract: 1383150 Instrument panels FIAT SpA 27 July 1973 [29 Aug 1972] 35967/73 Heading B7H A vehicle instrument panel comprises a housing 3 having a peripheral hood 6 for screening the instruments 5 from extraneous light wherein the housing is adapted for pivotal mounting in the vehicle so as to be movable to a position allowing access to the rear of the panel for maintenance. The housing is provided with pivot pins 9 which are received in the vehicle front wall 1 and a releasable spring loaded catch 21, having a release knob 27, is provided for holding the housing in the normal position. A lower edge extension 7 of the hood 6 is provided for switches, the connectors 8a, 8b of which are received within pockets in a cooperating front wall extension 11. A clutch or brake fluid reservoir 15 is pivotally mounted on the housing but is fixed relative to the front wall ' by a handle 15a; the reservoir is transparent or transluscent and carries a transparent panel 20 which closes an aperture 14 in the housing when the instrument panel is in its normal position. This arrangement allows for continuous inseption of the fluid level and for casing replenishment.
Patent GB-825232-A (GB)
Title: Improvements in or relating to a method of and apparatus for combustion in a furnace employing oxygen
Inventor: KUNO ISOO
IPC: F23C99/00
Filed: 1956-11-23
Abstract: 825,232. Liquid fuel combustion apparatus. SHIN-MITSUBISHI JUKOGYO KABUSHIKI KAISHA. Nov. 23, 1956, No. 35997/56. Class 51 (1). In the combustion apparatus of a submarine liquid fuel is burnt in a mixture of recirculated combustion gas and oxygen. In the boiler apparatus shown fuel is supplied through a tube 5, Fig. 1, surrounded by a chamber 51 which is mixed oxygen from a bottle 1 and combustion gas taken from a gas pass beyond an economizer 30 by a pump 23 and passed to the chamber through a duct 12a and an annular passage 13a. Part of the combustion gas passes directly to the combustion chamber 6 through an annular passage 13b and an annular passage around the tube 5. The economizer housing accommodates a separator 10 below which any water removed from the combustion gas is drained through a pipe 11<SP>1</SP> and excess combustion gas is discharged from the submarine through a valve controlled duct 12. When starting-up the furnace residual gas may be drawn from the chamber 6 and discharged through a pipe 37 in which are disposed valves 27, 28, and a pump 35. The pipe 37 and associated apparatus may be replaced by a pipe 137, &c., Fig. 2, such that on starting the furnace a pump 134 passes residual gas from the chamber 6 through a cooler 137, a burner 138 and a cooler 139 before return to the chamber. Scavenging gas is forced into the furnace, when necessary, through a pipe 36. The boiler comprises tubes 40 lining the chamber walls and steam generated therein passes to a turbine 15. The boiler condensate is returned to the tubes 50 via a feed-water tank 17 and an economizer 30.
Patent GB-1070143-A (GB)
Title: Cigarette package
IPC: B65D5/72
Filed: 1964-09-02
Abstract: 1,070,143. Cigarette packages. S. M. PECK. Sept. 2, 1964 [Jan. 8, 1964], No. 35998/64. Headings B8C and B8P. Cigarettes are packaged in a continuous strip between opposed sheets (43, 44, Fig. 7, not shown) of material, one or several cigarettes being included between adjacent seals (45). The cigarettes are then packaged in a paperboard box (Fig. 1) with extensions 20, 22 on its side walls which are folded over and interconnected to form a channel to guide the cigarettes past a serrated metallic blade 30 where the required number of cigarettes can be severed. The opposed sheets are preferably of different materials, e.g. transparent plastics material and aluminium foil, with perforations in the seals.
Patent GB-963199-A (GB)
Title: Mine roof supports
Inventor: GRUNWALD HEINRICH HERMANN
IPC: E21D23/00
Filed: 1959-10-23
Abstract: 963,199. Advancing mine roof supports. COAL INDUSTRY (PATENTS) Ltd. Oct. 24, 1960 [Oct. 23, 1959], No. 36014/59. Heading E1E. A self-advancing mine roof support comprises three sets of hydraulic props A, B, C supporting a roof bar R1, the props in one set being secured to the roof bar whilst the props in the other two sets are selectively movable relative thereto. The props in each of said sets are interconnected by at least one beam or base-plate whilst the props of one set are secured to a face conveyer M or its drive head. A series of such supports may be arranged side by side, see Fig. 6 (not shown).
Patent GB-803707-A (GB)
Title: Warping machines
IPC: D02H13/00
Filed: 1955-12-15
Abstract: 803,707. Beaming yarns. REINERS. W. Dec. 15, 1955 [Dec. 15, 1954], No. 36046/55. Class 142(1) A warp beam can be wound " hard " or "soft" according to whether the beam moves away from a presser roller as its diameter increases or whether the presser roller moves away from the beam. Yarns F are wound on a beam 3 carried by an arm 2 mounted on a shaft 4. The beam is driven by chains 21, 22. A control rod 5 and lever 7 connect the arm to a regulating gear 6. The presser roller 9 is mounted on an arm 10 .pivoted at 11 and can be locked by a latch 24. A further control rod 25 and a lever 8 connect the gear 6 to the arm 10. To wind a hard beam, the arm 10 is lockeld by the latch and as the yarn builds up on the beam, the arm 2 moves away from a stop 23. To wind a soft beam, the latch is released and the arm remains against the stop, the presser roller moving away from the beam. Detachable counterweights 13 control the pressure exerted against the yarns. A liquid damping device 17 is provided. Provision may be made for 'holding the arm 2 against the stop 23. The yarns F pass through a comb 19 and round a measuring roll 20.
Patent GB-784818-A (GB)
Title: Self-leveling, storing and dispensing apparatus
IPC: B65G1/07
Filed: 1955-12-19
Abstract: 784,818. Display stands. AMERICAN MACHINE & FOUNDRY CO. Dec. 19, 1955 [Dec. 24, 1954], No. 36300/55. Class 52(1) A goods - supporting platform 30 is carried by a sleeve 26 non rotatably but slidably mounted on a pillar 18 upstanding from the centre of a base 10, the sleeve being supported by a compression spring 28 so calibrated that as the platform is loaded it descends to such ar extent that the topmost goods are at a constant height. Rotation of the lower end of spring 28 as it is stressed anc unstressed is accommodated by a ball race 14.
Patent GB-884367-A (GB)
Title: Improvements in or relating to servo-mechanisms
IPC: B23B45/00
Filed: 1957-11-29
Abstract: 884,367. Electric control systems. GENERAL PRECISION Inc. Nov. 29, 1957 [Nov. 29, 1956], No. 36305/57. Class 40 (1). In a servo-system comprising a motor for producing a mechanical output in response to input quantity signals, with feedback from the output to the input of the motor so that it operates in accordance with the difference between the input and feedback quantities, the input signal is modified by the addition of components representing its first derivative, or its first and second derivatives, with the object of improving the overall transfer function of the system. The invention is described with reference to particular position and velocity servo-systems. Position servo-system, Fig. 2.-An input quantity 0i, representing e.g. an acceleration, is fed to an integrator 10 to produce a Oi quantity which is further integrated with respect to time at 20 to provide a 0i quantity, representing a position, which forms the input to servo-means 40 comprising an amplifier and a motor, a quantity #o representing the output of the servomeans being fed back and compared with #i in a comparator 30. The overall transfer function of the system, which is expressed by the equation where A is servo-loop gain, T is the combined time constant of the motor and amplifier, and p is the Heaviside differential operator, is improved by the application of #i and #i components to the comparator 30, the composite input quantity being #i(K 11  + K 12 p + K 13 p<SP>2</SP>), where K 11 , K 12 , K 13  are proportionality constants which, by correct scaling, can be made equal to 1, 1/A, T/A respectively, so that the overall transfer function, which is now becomes substantially equal to unity. Fig. 3 shows an electrical embodiment in which the output of integrator 20 is combined in amplifier U103 with the #i component via amplifier U102, and the #i component, the output of U103 being supplied via a magnetic amplifier 102 to the control winding of a 2-phase motor 105. The #i term is taken from the integrator 10, and may be synthesized with a #o signal from a tachometer generator 107 driven by motor 105. Amplifier U103 has a variable feedback impedance R104 adjustable to provide the desired loop gain. Where the time constant is small the #i to U103 may be omitted. In a system where #i is not derived by integration, differentiating means may be used to provide first and second derivative signals. Velocity servo-system, Fig. 6.-The overall transfer function of a system, wherein the input #i is compared at 280 with the rate feedback #o of a tachometer generator 270 driven by the servomotor 260, is given as #o/#i = A/p(T + p). A quantity representing #i/A is added to the input so that #o/#i becomes 1/p. If the #i quantity is derived by integration, the #i/A term may be taken, with suitable scaling, from the input of the relevant integrator; otherwise a differentiating device may operate on the input quantity.
Patent GB-1324685-A (GB)
Title: Housing for electrical apparatus
IPC: B65D6/26
Filed: 1970-07-27
Abstract: 1324685 Frames and joints SIEMENS AG 27 July 1970 [25 July 1969] 36349/70 Heading A4H [Also in Division E1] A frame work e.g. of sheet steel (1), Fig. 1 (not shown) for a housing for electric apparatus, comprises rectangular frames 2 (, 3) detachably connected by corner and side spacer pieces 4 (, 5), each connection including a fluid-tight T-section elastic, e.g. rubber, sealing element 14. The corner of L-section frame 2 has a cut-away 6, Fig. 2, with edges 7, 8, and an abutment piece 10 with depressions 11 is welded to the inside of the corner. A limb 16 of the sealing element is inserted between frame 2 and a bearing surface (15) of piece 10 (see Fig.3, not shown) and is elastically deformed. Projections 12 on L-section spacer piece 4 are then inserted into the depressions 11 so that the other limb 18 of the sealing element 14 lies in an elastically deformed condition between the spacer piece 4 and the bearing surface (15), and the stalk 17 of the sealing element is compressed between edge 8 of frame 2 and an opposite edge 13 of piece 4. The stalk 17 being substantially flush with the outer surfaces of parts 2, 4 adjacent the edges 8, 13. Frame 2 and piece 4 are held together by a threaded bolt 25, Fig.6, welded to piece 4 at 45 degrees and passed through an aperture 26 in piece 10 and a pressure member 27. A bent end 31 of member 27 bears against the edges of extensions 28 of aperture 26 so that on tightening a nut 32 on bolt 25 member 27 pivots and piece 4 is pulled into the corner of frame 2. This compresses stalk 17 between the edges 8, 13. In a second form, Figs. 8-13 (not shown), piece 4 has offset ends (36) with bent portions (37) for engagement in the frame corner, the ends (36) including pressed-out surfaces (38) to define a slot (40) for the sealing element 14. In a third form, Figs.14-17 (not shown), a substantially planar side spacer piece (5) has straps (50) with elongate holes (51) for screws for securing to the frame 2 and a central tongue (52) with a pressed out support surface (53) to define a slot for the sealing element 14. A fourth form Figs.18-19 (not shown) has the straps (50) bent at 90 degrees for securing to a C-section frame which has a slot (60) for the tongue (52). In a fifth form, Figs. 20-21 (not shown), two frame parts (62, 63) are connected to a corner piece (60) with the interposition of two sealing elements 14. The framework may include doors and covers with fluid-tight seals (20, 21) Fig.4 (not shown); or a frame and cover may be provided by a single dish-shaped frame component. The framework may comprise glass fibre reinforced synthetic resin.
Patent GB-1362549-A (GB)
Title: Connector for fluid lines
IPC: F16L5/00
Filed: 1971-08-03
Abstract: 1362549 Pipe couplings BRITISH OXYGEN CO Ltd 3 Aug 1971 [18 Aug 1970] 36401/71 Heading F2G A connector 11 for a fluid line 14 comprises a body having a generally axial passageway 13, 31, 40 therethrough, the body being made up from a plurality of disconnectible sections 12, 18, 39 which are located against relative rotation about the axis by a plurality of pins 21, 22 each of which extends into or through at least two of the sections. When a number of such connectors are used to convey different fluids at the same location the design of the connector ensures that after disassembly for maintenance, the sections 18, 39 are returned to the correct section 12 so that a further connector, which is uniquely accepted by the section 39, is connected with the correct pipe-line 14. In a hospital ward, for example, a number of such connectors may be mounted in a housing wall 10 for the supply of different gases to be administered to patients. As shown, the pins 21, 22 may be a pair of bolts having screw-thread portions 26, 28 and heads which locate in recesses 43 in the section 39. The bolts 21, 22 are disposed on a pitch circle and the position on the circle of bores 23, 24 is sections 12, 18 varies from connector to connector (Fig. 2, not shown). A skirt 42 on the section 39 matches uniquely the configuration of a further connector to ensure correct coupling. The connector may include a valve 32 comprising a valve head member 36 urged by fluid pressure in the fluid line 14 against a seat 35 and a stem 34 which is long enough to contact a ball valve member 17 in a chamber 13. The further connector, to be coupled to the connector shown, has a projection which lifts the valve head 36 from the seat 35. If the parts 18, 39 are dismantled, the ball 17 seals the connecting aperture 35 under pressure from the fluid.
Patent GB-1279870-A (GB)
Title: Method of treating a liquid with a gaseous medium in a bubble tower and a bubble plate for such method
Inventor: PAPP AGOSTON
IPC: B01D3/16
Filed: 1969-07-18
Abstract: 1279870 Contacting gases with liquids CHEMOKOMPLEX VEGYIPARI/ GEP-ES BERENDEZES EXPORT-IMPORT VALLALAT 18 July 1969 [25 July 1968] 36406/69 Heading B1R A gas/liquid contact column has bubble trays wherein liquid flows across a tray from a liquid inlet at 22 to a downcomer 24 and gas passes upwardly into the liquid bubble-caps, slits or as shown risers covered with mesh material, each tray having one or as shown two areas adjacent the liquid inlet 22, surrounded by a wall 38 connected one or more pipes 56 with area(s) adjacent the downcomer 24, the liquid seal on the risers within the areas within the wall(s) 38 being lower than the liquid seal on the risers on the rest of the tray whereby the greater density of the liquid outside in relation to liquid inside a wall 38 causes a flow of liquid through the pipe(s) 56 to within the wall(s) 38. In another embodiment the liquid is circulated through a chamber formed between the tray and a lower plate, risers extending through the chamber being provided for the upward passage of gas.
Patent GB-1082171-A (GB)
Title: Improvements in making laminated articles
Inventor: WOOD JOHN FRANCIS
IPC: B29C44/30
Filed: 1963-09-18
Abstract: 1,082,171. Laminates and laminating. IMPERIAL CHEMICAL INDUSTRIES Ltd. Aug. 31, 1964 [Sept. 18, 1963], No. 36695/63. Heading B5N. In making laminates by foaming core material, e.g. of polyurethane, between facing sheets, e.g. of paper, wood, plastic, metal, rubber, paperboard, plasterboard or asbestos used in any combination of pairs, the upper sheet is supported above the lower during foaming by suction applied to its upper surface. A suction means, which may be stationary, or, for continuous operation, may move with the upper sheet, may comprise a suction chamber, or a number of such chambers, having, or each having, a perforated or porous closure applied to the sheet, the closure comprising for example perforated metal, porous ceramic material, or porous cloth, rubber or plastic such as P.V.C. held flat by metal gauze or screening. Alternatively, for use in a continuous process of manufacture, the continuous top sheet E is held and fed forward by an endless porous belt F in a suction chamber H having a porous base G and edge-sealing strips L. The belt F may be wholly or partly within the chamber.
Patent GB-1171279-A (GB)
Title: Improvements in or relating to Cotton Harvesters
Inventor: FERGASON RECTOR CHARLES
IPC: A01D46/18
Filed: 1968-08-01
Abstract: 1,171,279. Cotton harvesters. ALLISCHALMERS MFG. CO. 1 Aug., 1968 [21 Aug., 1967], No. 36813/68. Heading AlF. A cotton harvester includes a drum 35 rotatably driven on a vertical shaft 29, a number of rows of rotatable picking spindles 38 disposed about the drum, a number of stripper bars 48 movable inwardly and outwardly relative to shaft 29 during rotation of the drum, the stripper bars being provided with a bushing 66 for each spindle 38, which bushings rotate with and move axially relative to their respective spindle during movement of the stripper bars, and a lubrication and cooling system for the picking spindles and stripper mechanism. As shown, each bushing 66 is rotatably mounted in a guide bearing 62 non-rotatably held in aperture 57, 58 in stripper bar 48, a front plate 76 holding the bushings in the stripper bar. The apertures 57, 58 in each stripper bar are connected by passageways 60, and the top of each stripper bar is provided with a reservoir 82 which communicates with the top aperture 57, 58 through passage 83. The reservoir 82 is supplied with lubricant and coolant fluid, i.e. water, after every revolution of the stripper bar, all the stripper bars being supplied from the same pipe 87. Water then flows down each stripper bar to cool, lubricate and clean all the stripper mechanism. The bearings and bushings are made of plastics. The drive to the movable parts may be taken from the power take-off of an engine (1) mounted on the machine, which engine also provides drive to the wheels (3). Stripper units (12) are mounted each side of the machine, Fig. 1 (not shown).