baber/WOPTO huggingface dataset:
Patent GB-391225-A (GB)
Title: Improvements in and relating to protective devices for electric distribution systems
IPC: H02H3/10
Filed: 1931-10-23
Abstract: 391,225. Protective cut-out arrangements. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts- Ges.; 2, Friedrich Karl-Ufer, Berlin.) Oct. 23, 1931, No. 29476. Convention date, Oct. 23, 1930. [Class 38 (v).] To avoid the use in each phase of a separate current transformer for each protective function and also the use of a single-winding transformer, the impedance of which cannot be made suitable for all such functions, a transformer with a plurality of secondary windings is connected in each phase, the turns of each winding being adapted to its particular purpose. In each .phase of a supply to a load a, b, c is connected a current transformer, the primaries of each of which carry inflowing and outflowing currents, whereas the secondaries w<1>, w<2> are connected, respectively, to differential relays d<1>, d2, d<3> responsive to interphase faults, and to an earth-leakage relay e. An arrangement employing single-winding primaries and overload relays is also described, Fig. 1 (not shown). Reference has beendirected by the Comptroller to Specifications 141,121 and 288,562, [both in Class 38 (v), Electric switches &c.].
Patent GB-629456-A (GB)
Title: Improvements relating to electric lamp bulb holders
IPC: H01R33/20
Filed: 1947-11-05
Abstract: 629,456. Lamp holders. LUCAS, Ltd., and PARKES, E. B. Nov. 5, 1947, No. 29488. [Class 38 (i)] A lamp holder comprises a resilient metal strip bent to form an S-shaped member having ends c, d which clamp the lamp i between them and an intermediate part e which supports the lamp cap a. The lamp end terminal b engages a contact f insulated by washers h from the end d, and the part e grips the cap a in an aperture j which may be extended at k, thereby improving the resiliency of the part e. Fixing holes m and a connecting tag g are provided.
Patent GB-665853-A (GB)
Title: A new or improved electric ozone generator
IPC: C01B13/11
Filed: 1948-11-13
Abstract: 665,853. Ozone-generators. GREEN, A. Nov. 12, 1949 [Nov. 13, 1948], No. 29512/48. Class 39 (i). An ozone-generator for use in the apparatus disclosed in Specification 665,835, [Group VI]. comprises a number of square-shaped wire gauge electrodes 15 clamped against opposite sides of insulating sheets 14 by recessed insulating corner blocks 12 held together on metal rods 11 attached to the insulating end-plate 10. Strips 16 soldered to two diagonally-opposite rods 11 provide the connections to the respective sets of electrodes 15. Circular-shaped members 13 are formed integral with the blocks 12. According to the Provisional Specification the electrodes may comprise a continuous metal powder coating applied to an insulating gum, and the endplate may be of metal.
Patent GB-1155413-A (GB)
Title: Improvements relating to the manufacture of Magnetic Recording Tape
Inventor: PEARCE RALPH REGINALD
IPC: G11B5/03
Filed: 1965-07-13
Abstract: 1,155,413. Magnetic tape manufacture; magnets. ELECTRIC & MUSICAL INDUSTRIES Ltd. 13 July, 1966 [13 July, 1965], No. 29579/65. Headings H1H and H1P. An orientated magnetic tape is produced by passing a base tape with its fluid coating through hollow passages in the two polepieces of a horseshoe type magnetic assembly, the field in the gap between the polepieces being tangential to the coating, and the arrangement being such that the reverse field where the tape emerges is small enough for no disorientation to occur. The conventional assembly comprises polepieces (2, 3), air gap (4), permanent magnets (5, 6), and bridge member (7); and three modified arrangements are described: (a) at exit point 13 there is placed assembly 21 comprising two pairs of soft iron bars 22, 23, 24 and 25, connected to bar magnets 26 (Fig. 4); (b) as in Fig. 4, but an electric coil (17) replaces assembly 21 (Fig. 3); (c) magnet 5 is replaced by a soft iron bar (33), and gap 4 is displaced to the left (Fig. 5); magnet 6 may comprise a number of parallel magnets. The coating may be acicillar γ-Fe 2 O 3  dispersed in a resin or lacquer.
Patent GB-631594-A (GB)
Title: Improvements in and relating to room heaters of the radiant type
IPC: F24C7/00
Filed: 1946-10-04
Abstract: 631,594. Unit heaters and air conditioners. JAMES, F. L. KERBYOct. 4, 1946, No. 29598. [Class 137] [Also in Group XI] A method o f radiantly heating a room comprises the steps of passing air over a heat radiating element, e.g. of an electric or gas fire which is exposed to heat the room by radiation, effecting humidification of the air and removing  dust particles from the air after it has passed over the heat radiating element and before it is discharged into the room. An electric radiator embodying the invention comprises an outer casing 10 carrying a heating element 11 having a rear reflector 14 formed with a slot-like opening 15 which communicates with the interior of a combined filtering and humidifying chamber 16. Air is drawn into the chamber 16 over the heating element by a fan 39 situated in the lower part of the casing passing through a filter comprising a pad of absorbent material (e.g. of felt or cotton wool) 20 which is moistened by water circulated from a reservoir situated below the filter 20 by a pump 29 driven by the fan-motor, conditioned air being discharged into the room through a grill 41. Specification 12694/15, [Class 137], is referred to.
Patent GB-333095-A (GB)
Title: Improvements in water-cooled blowing tuyeres for blast furnaces
IPC: C21B7/16
Filed: 1929-10-01
Abstract: 333,095. Brown, F. D., Richards, G. B., and Roberts, T. J. Oct. 1, 1929. Tuyeres. - Hollow blast furnace tuyeres a are provided with ribs, fins, spikes or other projections c where erosion takes place. The fins &c. mav extend inwardly along the interior of the tuyere to any desired extent. According to the Provisional Specification the ribs or fins are preferably arranged at an angle to the direction of the axial flow of the blast.
Patent GB-887089-A (GB)
Title: Improvements in or relating to devices for filling liquid fuel tanks
IPC: B64F1/28
Filed: 1959-08-31
Abstract: 887,089. Fluid-pressure servomotor-control systems; valves. STRUVER G.m.b.H., AD. Aug. 31, 1959 [Aug. 30, 1958], No. 29719/59. Class 135. In a device for filling aircraft or other fuel tanks, which is mounted upon a vehicle, comprising a rigid delivery duct 1, Fig. 1, leading to a hose 3 via a Venturi 2, the pressure at the discharge end of the hose 3 is adjusted to a given value by means of a by-pass valve 12 or throttle valve, not shown, the pressure drop across the Venturi 2 adjusting a differential piston, bellows diaphragm 5, 6 or a combination thereof loaded by resilient means, e.g. a spring, not shown, and connected to the by-pass or throttle valve. A by-pass valve 3 or throttle across the Venturi enables the rate of flow to be adjusted to suit hoses of different sizes. In a modification (Fig. 3, not shown), the by-pass discharges back to the suction side of the filling pump or the tank connected thereto, not shown. A compensating piston is disposed on the rod between the by-pass valve and differential piston, which compensating piston is operated by the pressures on either side of the by-pass valve. The differential piston may be loaded by fluid pressure instead of a spring. In another modification, the differential piston 5, 6 (Fig. 4), controls a needle valve 30 and hence the fluid pressure supplied to a chamber 34 in which is a spring-loaded piston 35 attached to the by-pass valve 22, the chamber 34 is connected to a point down-stream of the valve 34 by an adjustable valve 37. The Specification contains calculations of the pressures involved and the dimensions of the various components and parts used.
Patent GB-1393615-A (GB)
Title: Burner for a gas-fired appliance
IPC: F23D14/08
Filed: 1972-06-26
Abstract: 1393615 Atmospheric burners JOH VAILLANT KG 26 June 1972 [21 April 1972] 29792/72 Heading F4T A gas burner has mixing ducts 12 cast as a unit 10 having an outlet portion defining with a cast cap 28 an elongate distributing chamber 2, a plurality of burner tubes 23 communicating with chamber 20 and extending transverse to the length thereof, and a fuel gas supply pipe 2 cast integrally with pins 4 and carrying nozzles 3 for supplying fuel gas into the mixing ducts 12, parts of the pins above shoulders thereon being received in bores in the unit 10 to locate the nozzles 3 relative to the duct with the mixing duct inlets spaced from nozzles 3 to allow air entry into ducts 12. Unit 10 may be pressure diecast from aluminium alloy. The tubes 23 have shoulders 27 engaging in openings in the cap 22, the tubes 23 being permanently fixed to the cap by casting the cap around the tubes, or secured by soldering, or attached by lugs on the shoulders bent over to engage the inner surface of cap 22. The pipe 2 may support and feed two like units 10 with associated burner tubes 23, the inlet port 1 of the pipe 2 passing between the units 10, or a single unit 10 may having an aperture therein through which said inlet port 1 extends.
Patent GB-877432-A (GB)
Title: Improvements in or relating to photoconductive elements
IPC: G03G5/10
Filed: 1957-09-23
Abstract: 877,432. Electrophotographic development. KODAK Ltd. Sept. 23, 1957 [Sept. 24, 1956], No. 29812/57. Class 98(2) [Also in Group XXXVI] In a magnetic brush method of developing an electrostatic latent image on an exposed electrophotographic element, ferro-magnetic powder such as iron filings is intimately mixed with a toner consisting of a pigmented resin or sulphur and agitated to charge the toner. Suitable resins listed are styrenebutadiene copolymers, silicone resins, styrenealkyd resins, silicone alkyd resins, soya alkyd resins, polyvinyl chloride and polyvinyl acetate. Specifications 443,559, 548,019, 748,750 and 815,075 are referred to.
Patent GB-689660-A (GB)
Title: Improvements in and relating to driving gear for accessories mounted on internal-combustion engines
IPC: F02B33/00
Filed: 1950-12-06
Abstract: 689,660. Two-stroke and four-stroke V-engines. GRAF & STIFT AUTOMOBILFABRIK AKT.- GES. Dec. 6, 1950 [Oct. 25, 1950]. No. 29840/50. Classes 7 (ii) and 7 (iv). The accessories, e.g. scavenging air blower 4, injection pump 5 and air compressor 6, mounted on engines having the V-shaped space between cylinder rows 1, 2 closed by a horizontal wall 3 are coupled to at least two shafts 17, 18 driven through a train of gears 8... 13 and projecting from a closed shell 14 which projects upwards from the wall 3. The shell may be secured to the engine casing 15 and removable together with the shafts and associated gears. There may be a shaft 26 driving the blower 4 which through a V-belt 199 drives a dynamo 20. Resilient couplings 22 may be interposed between the shafts and gears. The wall 3 may have openings 30 and provide a flat surface level with the tops of the cylinders for a cover plate 29 which allows the space 37 to be used as a scavenging air container. In a modification, the plate 299 is integral with the shell 14, the dynamo 20 being coupled by a shaft to the compressor 6 and the shaft 26 driving a centrifugal blower. Specification 688,069 is referred to.
Patent GB-1328573-A (GB)
Title: Method and apparatus for retreading tyres
IPC: B29D30/54
Filed: 1971-06-25
Abstract: 1328573 Retreading tyres C K BAREFOOT 25 June 1971 [6 July 1970] 29965/71 Heading B5A [Also in Division B7] In a tyre retreading method the tyre and tread material are placed within a matrix, such as mould halves 76, 77, located within an autoclave such as 24 and pressure within the tyre is raised to force it against the matrix whilst the pressure exterior of the tyre is made equal to, or slightly less than, the internal pressure; heat is applied to the tread material to bond it to the tyre or to bond and cure it. The autoclave of Fig. 2 comprises a fixed lower part 21 which houses a matrix half 77 and an upper part 20 vertically adjustable by pneumatic cylinders 27 and containing a matrix half 76. The part 20 is guided by racks 32 engaged by pinions 33 on a shaft 34. The tyre heads are engaged by plates 62, 44 both movable vertically and relatively to each other; the plate 44 is secured to a column 42 attached to a pneumatic cylinder 49 moved vertically by a pneumatic cylinder 54 which pivots a lever 40 engaging pins 50 on the cylinder 49. The plate 62 is detachably attached via a spring-clamp 64 to the rod 60 of a piston 59 slidable in the cylinder 49. A sleeve 68 limits downward travel of the cylinder 49 and hence the plate 44, and a piston rod 61 depending from the piston 59 has an adjustment screw 70 limiting movement of the plate 62. The matrix has vents 87, 88 leading into venting chambers 84, 85 from which vent lines 86 lead to atmosphere. Pressure air is supplied to the tyre interior via a port 91 and to the autoclave via conduits 101, 104; the autoclave parts are clamped together by a ring 96. Heat may be provided by steam pipes communicating with passages in the matrix. In the embodiment of Fig. 11 the matrix halves are replaced by elastomeric diaphragms 127, 135 extending between the walls of the autoclave halves and the respective bead plates 121, 142 to thereby provide sealed pressure chambers 113, 114 supplied with fluid pressure via conduits 132, 143. The lower bead plate is vertically adjustable as in the previous embodiment, and the upper bead plate is attached to the upper part of the autoclave. Vent passages 153 connected with conduits 154 extend from each diaphragm to atmosphere or to suction means. In the embodiment of Fig. 13 in which retread stock is also placed on the tyre sidewalls, flexible diaphragms 173, 179 with vent passages 176 are secured to the matrix halves and the vertically adjustable halves 159, 160 also have vent openings. The autoclave is thereby sub-divided into upper and lower chambers and an inner space within the tyre.
Patent GB-1189505-A (GB)
Title: A method of Manufacturing Olefin Polymer Foam
IPC: C08J9/06
Filed: 1967-06-29
Abstract: 1,189,505. Moulding plastic substances. FURUKAWA DENKI KOGYO K.K. 29 June, 1967 [28 Sept., 1966], No. 30096/67. Heading B5A. [Also in Division C3] A foam is produced by mixing a crystalline olefine polymer or mixture thereof with an organic elastomeric polymer and/or an amorphous organic synthetic resinous polymer, the latter two polymers being miscible with the crystalline polymer and their total amount by weight being not more than that of the crystalline polymer, with an olefine polymer cross-linking agent and a blowing agent whose activation and decomposition temperatures respectively are higher than the melting point of the crystalline polymer, the mixture is moulded into a matrix which is then heated in a gas at 3-50 kg./cm.<SP>2</SP> pressure and at a temperature higher than the activation temperature of the cross-linking agent and the decomposition temperature of the blowing agent whereby a primary expansion is effected and the crystalline olefine polymer is cross-linked. The expanded body is then either (A) cooled below the melting point of the olefine polymer while maintaining the gas pressure, the pressure is released and then the body is reheated to 0-50‹ C. above the melting point, or (B) cooled to 0-50‹ C. above the melting point of the olefine polymer while maintaining the gas pressure which is then released, both procedures resulting in a secondary expansion. Figs. 1 and 2 show an autoclave used to produce the foam and Figs. 3A, 3B and 4 show shaped articles made of the foam.
Patent GB-1320835-A (GB)
Title: Plastic package assembly for electronic circuit and process for producing the package
IPC: H01L23/495
Filed: 1971-06-28
Abstract: 1320835 Housing semi-conductor devices NORTH AMERICAN ROCKWELL CORP 28 June 1971 [10 Aug 1970] 30223/71 Heading H1K As shown the plurality of coplanar leads 10, 11 which terminate at a central recess may be joined by a frame 13 and by damming strips 19, 20 used to limit the flow of a plastics material which is applied by injection or transfer moulding to form a single open ended housing depicted as notionally composed of parts 3, 23, and 4. Less desirably, the housing may be produced from separate layers. An electronic circuit or a semi-conductor device may be mounted in the housing by attaching it to a cover member 8 which is sealed to the housing by a ring 6 of an adhesive material such as an epoxy resin (preform). The device is wire bonded or connected by beam leads etc. to the lead terminations which may be coated or plated with gold or aluminium. After the attachment of the other cover member 7 (using ring 5 of adhesive material) the unit may be tested, and then resealed if not hermetic. The cover members may be of insulating material but are preferably of gold-coated copper or nickel-iron. The device may be heat bonded to a gold-plated cover with the help of a mechanical scrubbing action. The device shown may be electrically tested without complete severance from the lead frame by virtue of the presence of support members 15, 16 which are embedded in the housing. These keep the package secure within the frame and suitable for transit even after the separation of the leads 10, 11 from the frame. In a variant (Figure 6, not shown) the support members are omitted.
Patent GB-244452-A (GB)
Title: Machine for punching the rear part of the sole of shoes with louis heels
IPC: A43D8/34
Filed: 1925-11-30
Abstract: 244,452. Pericaud, B. M. Dec. 9, 1924, [Convention date]. Trimming.-A machine for shaping the split rear ends of the soles of shoes to which Louis heels are to be attached comprises a work-support 23, adjustable longitudinally and vertically, a bearing-plate 6, adapted to be positioned between the sole and the shoe, and a press-knife 5 carried by a manually-operated plunger 17. The fore part of the sole, provided as usual with a split rear end, having been attached to the shoe, the shoe is placed on the work-support and this is slid rearwardly on its dove-tail guide 19 until the rear end of the shoe contacts with a gauge 29 adjustable by a nut 31 and provided with a vernier scale 34. The work-support is then clamped in position. The part 3 of the rear split end is bent forwardly, and the part 2 is positioned over a bearing-plate 6 fixed to the machine. A handle is then operated, depressing a plunger 17 carrying the press knife, which trims off a margin leaving a tongue which is to be later secured between the heel and shoe. A plate complementary to this tongue is then positioned about it, to give a flat base for the second cut. The knife 5 is changed for another shaped to form the extension to be cemented to the heel breast, the flap 3 iF bent backwards over this complementary plate and the plate 6, and the plunger 17 is depressed for the second cut. In a modification, two machines are provided, each performing one cut.
Patent GB-1430580-A (GB)
Title: Multicolour warning lamp assemblies
IPC: F21V9/08
Filed: 1972-06-28
Abstract: 1430580 Indicator lamp LUCAS ELECTRICAL CO Ltd 20 June 1973 [28 June 1972] 30243/72 Heading F4R An indicator lamp for use in a road vehicle has three translucent screens 14, 15, 16 coloured red, amber and blue respectively, a film 17 bearing transparent areas depicting words or symbols and a cover 18 of dark translucent material. A piece of adhesive tape 20 is stuck to amber screen 15 to absorb some of the light since otherwise the amber screen would appear to be brighter than the other screens. The cover, film and screens are held in place by a bezel 19.
Patent GB-967708-A (GB)
Title: Removal of unwanted alloy from a manufactured article
IPC: H05K3/34
Filed: 1963-07-31
Abstract: <PICT:0967708/C6-C7/1> <PICT:0967708/C6-C7/2> A method of removing unwanted parts such as connections or coatings from a manufactured article, the parts being formed from a first alloy comprising atleast two component metals and having a melting point lower than that of each metal, comprises forming a molten mass of a second alloy which includes the metals together with further metals by heating the second alloy to a temperature greater than its melting point but below that of the first alloy, and contacting at least the unwanted parts with, or immersing them in, the molten mass whereby the unwanted parts are dissolved in the second alloy.  As described with reference to Fig. 1 a vessel 11 heated by a heater 15 contains a bath 13 of an alloy of 50% Bi, 25% Pb, 12.5% Sn and 12.5% Cd into which is dipped a printed circuit card 17 to dissolve the solder from the card so that components 19 of the card can be salvaged. These components 19 may include resistors, capacitors, metallic connectors, diodes and transistors, and on the rear face of the card, Fig. 2 (not shown), are gold-plated terminals connected to land areas by solder-covered copper lines.  The solder may be 60% Sn and 40% Pb having a M.P. of 361-368  DEG F. and the bath 13 which has a M.P. of about 155  DEG F. is heated to about 200  DEG F.  The bath 13 may alternatively comprise the following compositions:  50% Bi, 26.7% Pb, 13.3% Sn and 10% Cd having a M.P. of 158  DEG F., this being a eutectic composition, or 50.5% Bi, 27.8% Pb, 12.5% Sn and 9.3% Cd having a melting temperature range of 158-163  DEG F., or 50% Bi, 34.5% Pb, 9.3% Sn and 6.2% Cd having a M.T.R. of 158-174  DEG F., or 50.72% Bi, 30.91% Pb, 14.97% Sn and 3.4% Cd having a M.T.R. of 158-183  DEG F. The last two compositions are preferably heated to about 200  DEG F. but the other compositions may be heated only to about 180-200  DEG F.  As shown in Fig. 4, the method may be used to remove excess solder from a printed circuit card 17 which is skimmed above the surface of the bath 13 at a height corresponding to the amount of solder which is to remain on the card.  The card may be placed on a belt or worm and moved across the bath following dip or wave soldering in an automated line.  To mitigate the effects of expansion of the bath when this solidifies it is preferred that the alloy has between 48% and 55% Bi and not more than 33% Pb.  The dissolved Sn, Pb solder may have 5-95% Sn.
Patent GB-755530-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H51/06
Filed: 1953-11-03
Abstract: 755,530. Electromagnetic relays. ERICSSON TELEPHONES, Ltd., and DISTIN, L. S. Nov. 3, 1953, No. 30345/53. Class 38(5) A relay whose operation is not impaired by conditions of high acceleration comprises a core 5 surrounded by a coil 20, a screw 24 in one end of the core forming a bearing for a U-shaped armature 22. The armature may comprise a pair of similar plates welded together and each having a semi-circular section, channel 23 to receive the screw 24. A U-shaped yoke 4 completes' the magnetic circuit between the core 5 and the ends of the armature, the sides of the yoke opposite the armature being chamfered at 4a. A non-magnetic washer 30 is interposed between the armature and core to prevent frictional drag, whilst the reluctance of the magnetic circuit is reduced by surrounding the armature parts 23 by a sleeve extension 28 of the core 5 slotted at 29 to permit the armature movement. Brackets 16, 17 attached to the yoke 4 each carry a pair of contact springsets 12, 13, and 14, 15, respectively, each spring- set comprising a pair of fixed springs 12a, 12c &c. and a central movable spring 12b &c. The free ends of the fixed springs face projections extending from the periphery of a buffer block 121 mounted on the core 5, whilst the movable springs 12b &c. are biased so that when the coil 20 is not energized they engage the fixed springs 12c &c. and hold the armature in its unoperated position (Fig. 4) against stops 125 by acting on teeth 25 of an insulating disc 124 fixed by screws and lugs 27 to the armature. On energization of the coil the armature is attracted against the chamfered parts 4a of the yoke and teeth 25 move the springs 12b &c. to engage the springs 12a &c. The stops 125 may be bent to adjust the airgap. A copper bush 20a may surround the core 5 to delay the relay operation. The core has a threaded extremity whereby it is mounted on a base 2 by nuts 11, a casing 1 being sealed to the base and exhausted through a tube 32. Specification 657,914 is referred to.