baber/WOPTO huggingface dataset:
Patent GB-1530216-A (GB)
Title: Thermal compression gang bonding of interconnect leads to semiconductive devices and terminal structures
IPC: H01L21/603
Filed: 1976-05-28
Abstract: 1530216 Welding leads in semiconductor device manufacture NATIONAL SEMICONDUCTOR CORP 28 May 1976 [2 June 1975] 22357/76 Heading H1K [Also in Division B3] Cu leads 16 are gang joined to Au layers on a semi-conductor chip 22 and/or a lead frame 43 by thermo-compression bonding such that Cu is diffused into Au. The leads 16 are initially formed, in a pattern 14, from a wrought Cu foil tape 11 (Fig. 1, not shown) provided with transport sprocket perforations (13). A polyimide film 15 positions the leads in their pattern, and perforations 19 facilitate subsequent foil shearing. The chip 22 comprises a semi-conductive substrate 23, a grown epitaxial n type layer 24, p + and n+ regions 25, 26 diffused into the layer 24, a first passivation layer 27, e.g. of SiO 2 , a metal pattern 28, e.g. Al, in electrical contact with the regions 25, 26 by way of first passivation layer apertures 29, gang bonding bumps 21 deposited, e.g. electroplated over and in contact with the pattern 28, and a second passivation layer 31, e.g. of SiO 2 . The chip 22 is initially carried, with others, on a glass plate (Fig. 3, not shown) by way of wax and high temperature films (35, 34) and a layer of release wax (36), adjacent chips being separated by part-way saw cuts (37). At a lead/chip bonding machine (Fig. 3, not shown), the chip and the pattern of leads 16 are registered with a gang bonding tool 38, e.g. C, heated, e.g. to 550‹ C., which tool presses the inner ends of the leads 16 on to the bumps 21 at approx. 8 grams/sq.mil., for approximately 0À2 seconds. The diffusion bond is thereby effected and, due to heating, the wax (36) releases the chip. Each bump 21 comprises a Cu base 39, an intermediate diffusion-preventing barrier layer 40, e.g. Ni and of 0À1-0À7 mils., and an upper, Au, layer 41, e.g. 15-60 microinches. The leads 16 are preferably coated with antioxidant, e.g. Au, copper phosphate, chromate, thin enough to permit bonding therethrough. Alternatively, the bumps 21 may be of solid Au. The tape 11 with attached chips is then fed through a further machine which thermocompression diffusion bonds the outer ends of the leads 16 to lead frame members (43, Fig. 6, not shown). Where the lead frame members are Cu they are each plated successively with a diffusion-preventing barrier layer (44), e.g. Ni, and an Au layer (45); and the contacting surfaces of the leads 16 are preferably coated with antioxidant, e.g. Au, copper phosphate or chromate. Alternatively, the lead frame members may be of Ni (as an example) with the Au layer (preferably 50-60 microinches) plated directly thereon. A lead frame/lead bonding tool (46), e.g. at 450‹ C. is pressed against the underside of the leads, at, e.g. 10-30 grams/sq. mil. for approximately 0À15 seconds, and the lead pattern 14 is peripherally sheared from the tape 11. Finally, the lead frames are moulded epoxy packaged (Fig. 5, not shown).
Patent GB-864446-A (GB)
Title: Electrostatic separation apparatus
IPC: B03C7/06
Filed: 1959-06-30
Abstract: 864,446. Electrostatic separators. GREENSHIELDS. J. B. June 30, 1959 [Oct. 6, 1958], No. 22360/59. Class 117 [Also in Group XXXV] Electrostatic separation apparatus for separating stalk from tea leaf comprises three metal feeder trays 21-23 arranged in a frame 24 which is secured to the main frame 26 by four leaf springs 27 to enable the frame 24 to move in the directions B. Vibration of the frame 24 is produced by means of a cam 30 driven by a motor 34, and the material to be treated is contained within a hopper 38 of which the outlet gap 54 is controlled by an arcuate plate 49 rotatably adjustable by an arm 53. A number of radially disposed arms 48 are rotatable by the motor 34 and project into the gap 54 through slots in the plate 49. Separator plates 59-61 of electrically insulating material are hinged to fixed hardboard trays 56-58 respectively and may have their angle of inclination adjusted by cords 64 connected to a handwheel 67. Sheets 71, 72 of flexible electrically insulating material are secured to the upper edges of the separator plates. A deflector plate unit 73 includes three metal strips 77-79 electrically connected together and to a generator 95 (see Group XXXV) also driven by the motor 34. Thin films 81 are stretched across channels 74- 76 containing the strips 77-79, and supports 82 for the channels are adjustable by rack and pinion in the directions D; the films, channels and supports are of electrically insulating material. Passage of the mixture of tea leaf and stalk from the hopper is facilitated by an inclined plate 127 secured to the tray 21 and by the action of the arms 48. The leaf, with a proportin of stalk, falls on to the tray 22 via tray 56, and the bulk of the stalk is attracted towards the channel 74 to fall on the sheet 71. Further separation takes place at the plates 60, 61. The electrostatic field may be generated by a transformer and rectifier, and electromagnetic means may be used for producing the vibration.
Patent GB-386902-A (GB)
Title: Improvements in or relating to the manufacture of firelighters
IPC: C10L11/00
Filed: 1932-08-10
Abstract: 386,902. Moulding firelighters and fuel blocks. HEATON, H., 75, Catherine Street, Winton, Eccles, Lancashire. Aug. 10, 1932, No. 22364. [Class 87 (ii).] Firelighters comprising absorbent material such as sawdust with or without coke, coal dust, &c., impregnated with creosote salts or the like, are made by filling a number of perforated moulds with the absorbent material, lowering them in a wire basket q into an impregnating tank a heated by burners d, and allowing the molten salts to flow in from a boiler e after a cover b is replaced: After about four minutes the excess liquid is pumped back into the boiler by a pump l and the basket of moulds is removed after draining. The firelighters may be quickly cooled by a forced draught of cold air. The impregnating tank may have a heated sump at the side behind a pendant wall to prevent wastage due to escape of vapours. The moulds may have a number of transverse half-round grooves, the product from each comprising two cakes of four firelighters connected by a thin web. The material may be sprayed with a combustible material such as creosote oil before introduction into the moulds.
Patent GB-760280-A (GB)
Title: Improvements in or relating to hanger and stretcher devices for clothes
IPC: A47G25/66
Filed: 1954-07-30
Abstract: 760,280. Garment stretchers. BASCHNONGA, K. July 30, 1954, No. 22392/54. Class 141. [Also in Group XIV] A skirt or trousers hanger, in which the skirt &c. is suspended by the engagement of the stretched waitband or turnups by an expanding member, comprises rods 1, 2 and a coil spring 3 encircling the rods and secured at its ends to one end of each rod to urge apart gripping members 6, a central suspension hook 5 being secured to a holder 4 mounted centrally of the spring. The rods may be of semi-circular cross-section and the holder 4 welded or clamped to the spring. A single depending gripping member is provided at each side to engage inside the waistband of a skirt or a U-shaped gripping member at each side to suspend trousers, the surfaces of the gripping member being roughened or rubber-covered.
Patent GB-1456477-A (GB)
Title: Insect electrocution device
IPC: A01M1/22
Filed: 1975-05-23
Abstract: 1456477 Electrocuting insects RID-O-RAY INC 23 May 1975 [20 June 1974] 22469/75 Heading AIM An insect electrocution device comprises a light source, preferably formed of four fluorescent tubes 16 and a reflective baffle 24, mounted between end plates 20 and 22, a first conductive grid 26 extending around the light source and between the end plates to enclose the light source, a second conductive grid 28 extending around the first conductive grid and between the end plates so as to enclose the first conductive grid, and a power supply device for supplying electrical power to the grids, a collection tray 60 and end caps 46 and 47 being provided respectively between the end plates, externally of the second conductive grid and at the ends of the light source and grids, the remainder of the device being exposed for free access by insects. The electrical power supply is a transformer 52 and the tray 60, hinged at 62, has a latch assembly 64 by which an electrical switch 66 is closed when the tray is in its horizontal position, but open when the tray is swung open for cleaning. The embodiment of Figure 4 (not shown) has U-shaped fluorescent tubes (74) contained in sockets (76) in a removable mounting plate (78). In the embodiment of Figure 5 the device can be hung vertically with end cap 80 constituting a hinged, latched, bottom tray, the electric components being contained in the then upper end cap 82.
Patent GB-733650-A (GB)
Title: Isophorone and its homologues
IPC: C07C45/74
Filed: 1952-09-08
Abstract: The invention comprises a process for the preparation of isophorone and its homologues from ketones of 3-6 C atoms by condensing the ketone or a mixture of such ketones with alkali hydroxide dissolved in an aliphatic, alicyclic or aromatic alcohol, with or without water present, and recycling higher condensation products, optionally with water for hydrolysis to isophorone and acetone.  The products may be fractionated and part re-cycled.  In examples, acetone is heated in an autoclave with 1/2 N-methanolic sodium or potassium hydroxide, or lithium hydroxide, under various conditions to give isophorone, mesityl oxide and other products, some fractionated and re-cycled; methyl ethyl ketone similarly gives methyl-3-heptene-3-one-4 and an isophorone of 12 C.  Other alcoholic solvents specified include cyclohexanol and benzyl alcohol.  Specification 524,151 is referred to.
Patent GB-643245-A (GB)
Title: Improvements in or relating to curtain rails or the like
IPC: A47H1/04
Filed: 1948-08-27
Abstract: 643,245. Suspending curtains ; brackets. COPE & TIMMINS (LONDON) 1911, Ltd., and GLATZEL, W. Aug. 27, 1948, No. 22596. [Class 52 (v)] A corner junction fitting for rails forming a curtained cubicle, the rails consisting of tubes with a depending runner track, comprises a tubular split socket 4a for receiving and jointing two butting curtain rails 1, la, the rail 1 being curved at an angle to the rail 1a. The other end 4b of the fitting projects beyond the curved end of the tube 1 and has a connecting member 5 in the form of a disc with a keyhole slot fixed thereto. To fit a third rail 1 b in line with the rail 1a the pin 9 of a socket 7 is inserted in the slot and the rail 1b engaged with the socketed sleeve. In a fourway joint two fittings are provided and joined by an adaptor having two pins to engage in the keyhole slots in the connecting members. The junction fitting may be used as a support by connecting it to a wall or ceiling bracket comprising a flanged plate 12 to which an adaptor 15 with a keyhole slot 19 is fixed by a pin and bayonet slot connection.
Patent GB-1273575-A (GB)
Title: Hypodermic syringe
IPC: A61M5/34
Filed: 1970-05-11
Abstract: 1,273,575. Hypodermic syringes. NOSCO PLASTICS Inc. 11 May, 1970 [8 Aug., 1969], No. 22694/70. Heading A5R. A hypodermic syringe comprises a solid plastics post 10 having at one end a socket 14 and at the other a needle hub 9, a double ended needle 11 embedded in said post and having one end 13 projecting within socket 14 and the other extending from said needle hub, a first vial 1 telescoped over said post, a first piston 1 within vial 1 having a projection 16 which can be screwed into socket 14 thus causing needle end 13 to penetrate a section 3 in piston 2. A second vial 1a is provided with a piston 2a having a section 3a which is penetrated by needle end 12 when vial 1a is pushed towards vial 1, the needle then providing a passage between the two vials enabling two ingredients therein to be mixed by the transfer of the contents of vial 1a into vial 1. The needle hub 9 may be connected to the second vial by a sleeve 7.
Patent GB-750179-A (GB)
Title: Improvements relating to pail-like utensils
Inventor: HURLEY STANLEY
IPC: A47L13/58
Filed: 1953-08-19
Abstract: 750,179. Mop buckets. DARLASTON GALVANISED HOLLOWARE CO., Ltd. April 14, 1954 [April 19, 1953], No 22824/53. Class 19 A mop bucket comprises a sieve member for wringing the mop comprising a perforated segment of a conical frustoconical or like shell 18 the upper boundary pf which conforms substantially to the curvature of the upper part of the side wall of the bucket from which it depends and an integral or attached plate 19 of planar form or of a curvature less than that of the shell, extending between the ends thereof cross-wise of the bucket. A flange 21 parallel with the walls of the bucket may be provided at the upper part of the shell and a small horizontal ledge (not shown) may be provided between the flange and the shell. Connection to the bucket may be made by soldering or by a releasable fastening. According to the Provisional Specifications perforations preferably alternate between circular and elongated shape.
Patent GB-186505-A (GB)
Title: Improvements in and connected with the doors of ovens and the like
IPC: A21B3/02
Filed: 1921-08-29
Abstract: 186,505. Walker, A. Aug. 29, 1921. Doors.-Relates to control gear for the doors of ovens &c. of the fall-down type. The door 1, Figs. 1 to 3, pivoted at 2, is connected with two lever members 6, each comprising a broad arm 7 and a narrow arm 8. The arms 7 are slotted at 9 to receive fulcrum pins 10, and shoulders 15 are adapted to engage stops 16 in the open position. The smaller arms 8 are provided with rollers 17, and pins 19 which engage stops 20 on the door when the latter is fully open. The stops 20 are slotted to act as guides for the arms 8, and carry rollers 21. Links 13 are pivotally mounted on pins 14 on the arms 7, and slots 23 in the links engage pins 24 on the counterweights 25, which are pivoted on pins 26. As the door is opened, the weights 25 are raised from the position shown in Fig. 3 to that shown in Fig. 1, and tend to balance the weight of the door. The control gear is housed in spaces between inner and outer walls 4, 5 of the oven. The latch 28 is slidably mounted in a stile 30, and as the door is closed it passes over the rounded edge 34 of the hasp 31, and engages one or other of the notches 32, 33 as it drops either under its weight or by the aid of springs. Fig. 5 shows a modification, wherein the arms 8 of the levers 6 are riveted to the door, the arms 7 shortened, and the links 13 attached to pivoted counterweights 25 of the form shown.
Patent GB-828416-A (GB)
Title: Apparatus for subjecting a structure to alternating mechanical impulses
IPC: B63B39/03
Filed: 1958-07-16
Abstract: 828,416. Vibration dampers. SALOMON, F. M.. M. B. July 16, 1958 [July 16, 1957], No. 22884/58. Class 108(3) [Also in Group XXXIII] An apparatus for exerting alternating mechanical impulses on a structure with a view to combating oscillations. Comprising a first circuit 1 provided by a duct secured to the structure and disposed in a plane substantially perpendicular to the axis of the oscillation, with means, pumps 11, for causing liquid contained in the first circuit 1 to be circulatin in one direction F, at a substantially constant speed, and a second circuit 2 provided by a second duct secured to the structure and disposed in a plane substantially parallel to the plane of the first circuit 1, with means, pumps 10, for causing liquid contained in the second circuit 2 to be circulated in a second direction F 2  opposite to the direction of circulation of liquid in the first circuit 1 and at a substantially constant speed which is substantially the same as the speed of circulation of the liquid in the first circuit 1, and means, valves 6 and 7, adapted to operate at selected instants to allow liquid to flow from one of the circuits into the other circuit, and vice versa, via ducts 4 and 5, whereby the quantity of liquid in a circuit is variable but the total quantity of liquid in the two circuits is substantially constant. Specification 806,849 is referred to.
Patent GB-237132-A (GB)
Title: Improvements in or relating to dimmers for use with head lights of motor vehicles or the like
IPC: B60Q1/14
Filed: 1924-09-30
Abstract: 237,132. Cope, J. C. Sept. 30, 1924. Supplying consuming devices. - The head lights of a motor vehicle have a resistance 1 in circuit with them, the resistance being normally shorted by a switch 10 in its " on " position. Movement of the switch to its " off " position causes the lights to be dimmed. The resistance wire 1 is wound on a core 2 of slate and asbestos mixture &c. and is enclosed in a two part box 3, 4. The terminals 6, 7 of the resistance also secure the parts 3, 4 together. Holes 9 receive screws for fastening the box to the vehicle.
Patent GB-628932-A (GB)
Title: Improvements relating to gas fires
IPC: F24C3/04
Filed: 1947-08-20
Abstract: 628,932. Gas fires. RADIATION, Ltd., and EVANS, U. C. L. Aug. 20, 1947, No. 23064. [Class 126] A gas fire or the like is formed at the rear with a vertical air duct b which at its lower end is open to the atmosphere and at its upper end is adjacent to the combustion - products outlet d of the fire a, the adjacent parts being so arranged that the flow of air in the duct opposes that of the gases emerging from the apparatus. A gap e is formed between the adjacent ends of the parts band d so providing an outlet to the chimney f. In a modification the air duct comprises an independent fitting adapted to be mounted at the rear side of the gas fire.
Patent GB-249895-A (GB)
Title: A process for the treatment of hydrocarbons
IPC: C10G32/02
Filed: 1924-09-30
Abstract: 249,895. Goltstein, E. Sept. 30, 1924. Mineral and tar oils.-Distillation products of petroleum and like hydrocarbons are treated with. light of short-wave length or ultro-violet rays from an immersed mercury-vapour lamp. The vapours may be flowed past the lamp. Polymerization is said to take place. In an example, the viscosity of 100 kilograms of Russian mineral oil was increased from 6.4 to 7.8 Engler in 30 minutes using a quartz lamp of 60 volts and 6 ampÞres which gives rays of a wave-length of under 0.0003 mm.
Patent GB-615197-A (GB)
Title: Improvements relating to the manufacture of padlocks
IPC: E05B67/02
Filed: 1946-08-06
Abstract: 615,197. Padlocks. BURTON & DISTRICT WAR PRODUCTS CO., Ltd., and BEDDALL, J. R. Aug. 6, 1946, No. 23219. [Class 44] A padlock casing of the kind comprising front and rear plates spaced apart by a peripheral wall, is formed in two sections, stamped or cast, each section having parts adapted for tongue-and-groove engagement when the two sections are assembled by a relative sliding motion. The bottom wall 9a and the major part of the side walls are formed integral with the main section 9, and are provided in their inner faces adjacent their rear edges with a groove 9c. The second section 10 of the casing is formed at its upper part with a part 10a constituting a closure for the upper end of the body, with a cut-away part 10c to accommodate the pivoted end of the bow 11, and a slot 10e to permit passage of the free end of the bow into the casing. The lower part of the second section 10 is rabbeted along sides and bottom at 10f to slide into the groove 9c in the main section. An alternative form of groove and rabbet connection is shown in Fig. 8.
Patent GB-279045-A (GB)
Title: Improvements in metallic vapour rectifiers for alternating currents
IPC: H02H7/127
Filed: 1927-09-05
Abstract: 279,045. Akt.-Ges. Brown, Boveri, et Cie. Oct. 18, 1926, [Convention date]. Low-pressure metallic-vapour apparatus. - Each anode of a multi-anode vapour rectifier is associated with a grid or equivalent device so connected and arranged that in the event of back ignition a potential is impressed upon the grids which causes the current in all the anode circuits to be interrupted. As shown in Fig. 1, the grids may be in the form of conducting bands 5, 6 surrounding the limbs 11, 12 of the container in which the anodes 2, 3 are disposed. The anode current is interrupted in the event of back ignition by connecting the grids through switches 8, 9 to the ends of the secondary winding 1 of the supply transformer in reversed relationship to the anode connections so that a potential opposite, in phase to the anode potential is applied to the grids. A modification is described in which the anodes are disposed within insulating shields in a common casing, the grids being in the form of bands surrounding the and connected to the transformer secondary through current-limiting resistances. In another modification, the grids are in the form of a metallic sleeve surrounding the anodes, and auxiliary anodes are arranged in an exciter circuit to ensure re-ignition after the back ignition has been extinguished. In cases where the grids are exposed to the arc, direct passage of current to the grids may be prevented by embedding the grids in insulating material, for example, a coating of enamel.
Patent GB-481016-A (GB)
Title: Improvements in operating gear for doors, gates or the like
IPC: E05F15/00
Filed: 1936-08-26
Abstract: 481,016. Door - operating apparatus. EXPRESS LIFT CO., Ltd., and HEPPELL, W. A. Aug. 26, 1936, Nos. 23445/36 and 20906/37. [Class 65 (i)] [Also in Group XXXV] In door or gate operating means of the kind comprising a screw-threaded shaft driven by an electric motor and of such pitch that the shaft may be rotated by manual movement of the door, the motor is supplied from a source of energy of output so limited that the movement of the door may be readily obstructed without damage to the apparatus or injury to a passenger who may be caught in the door. The source of energy is preferably a generator driven by a motor through a slipping clutch, which may be an eddy-current clutch. In a door installation, such as for a lift, the individual door motors are supplied from one or more sources equal in number to the doors which are simultaneously operated. The generator is preferably compound-wound, to assist in limiting the output, and variable resistances may also be used. The motor driving the generator is preferably switched off normally, being started automatically when any call is made. Limit switches are operated by the door, and time switches are provided to open the circuit if the door movement is not completed within a predetermined time. A suitable form of clutch, Fig. 1, comprises a cup-shaped member 1 of magnetizable material on the motor shaft 2, carrying a copper or other conducting ring 9, polepieces 8 on a shaft 5 which is coupled to the generator shaft 6 and supported in a bearing 4 in the member 1, and energizing coils supplied through dip rings 13. Specification 468,376 is referred to.
Patent GB-193350-A (GB)
Title: Improvements in or relating to centrifuges
IPC: B04B5/10
Filed: 1922-08-29
Abstract: 193,350. Renault, L. May 7, 1922, [Contion date]. Grant of Patent refused. Recovering waste lubricants.-A centrifugal separator is included in the lubricating system of a machine such as an internal-combustion motor to effect continual separation of foreign matter. A density separator 1 mounted in the lower casing 9 of a motor is driven by a vertical shaft 6 and comprises a coned tube 2 mounted within a cylindrical drum, vanes 5 being provided to ensure rotation of the oil. Oil flows into the separator through a metal gauze 11, and the purified oil issues from tubes 3 into a chamber 10 from which it is pumped back into the lubricating system. The tubes 3 may be arranged to terminate in a closed chamber so that the motion of the oil from the separator may be utilized to dispense with the circulating pump. In a modification the inner tube 2 may be cylindrical and may communicate with the outer drum by holes near the base. A manhole 7 is provided for removal of the separator for cleaning. Any kind of centrifugal separ. ator may be used.