baber/WOPTO huggingface dataset:
Patent GB-1433624-A (GB)
Title: Multi-level interconnection system
IPC: H01L21/306
Filed: 1973-09-21
Abstract: 1433624 Integrated circuit metallization INTERNATIONAL BUSINESS MACHINES CORP 21 Sept 1973 [27 Oct 1972] 44320/73 Heading H1K A method of forming a multilevel interconnection system for an integrated circuit comprises forming a patterned metallic layer 34 on an insulating layer 32 on a semi-conductor body 10, e.g. Si, depositing a second insulating layer 36 over the said insulating and metallic layers, the second insulating layer 36 being etchable by an etchant to which the insulating layer 32 is relatively inert, etching a hole through layer 36, using said etchant, over a desired portion of layer 34, and depositing a second metal layer 42 on layer 36 so as to contact the exposed portion of layer 34, the minimum width of the hole being # the maximum width of the underlying portion of layer 34. Layer 42 is subsequently patterned by photo-etching. Layers 32 and 36 may be of Si 3 N 4  and SiO 2  respectively (when buffered HF may be used as etchant), or vice versa; Al 2 O 3  and SiO 2 ; or thermally grown SiO 2  and SiO 2  pyrolytically deposited at between 400 and 550 C. The metallic layers may be of the same or different materials, or laminates or alloys, including Al, Cr, Cu, Si, Ag, and Ta; when layer 42 is of Al or Al alloy, an etchant is used which does not affect layer 34, which may be of Cr-Ag-Cr or Cr-Cu-Cr, e.g. a solution of H 2 O 2  and NH 4 F. Additional insulating layers 30 and 44 may also be present on the device. Further metallic layers may be added in a similar process.
Patent GB-1285072-A (GB)
Title: Staircase voltage generators
IPC: H03K4/02
Filed: 1969-09-10
Abstract: 1285072 Inverting RCA CORPORATION 10 Sept 1969 [20 Sept 1968] 44609/69 Heading H2F [Also in Divisions H3 and H4] A step wave generator (e.g. for modulating the EHT voltage of a colour TV tube of the penetration type) comprises a square loop transformer 57 the primary of which is connectable across a D.C. supply via an electronic switch 58 and the secondary is loaded with capacitance 68. As described, the penetration type cathode-ray tube (Fig. 1, not shown) has a conical annode coating, a three layer aluminized phosphor screen and a plane mesh mounted close to and parallel with the screen. The coating is normally operated at a fixed potential derived from the line deflection system whilst the phosphor screen and mesh are respectively supplied with EHT, inversely modulated with a three-step waveform corresponding to red, green and blue displays. The system is arranged to provide alternate lines in each of the three colours by sequential triggering of thyristors 58, 62 by pulses derived from a ring counter controlled by the output of the sync. separator. The "blue" levelis achieved by triggering thyristor 58 so as to connect the primary of square loop transformer 57 across a D.C. supply thus charging capacitor 68 to the appropriate "blue" voltage. When capacitor 68 is charged, the primary current becomes decreased to a value insufficient to maintain thyristor 58 conductive. Capacitor 68 now begins to discharge slowly via the secondary winding of transformer 57, but after one line period (during which time the change in voltage across capacitor 68 has been negligible) transformer 57 becomes saturated so that capacitor 68 rapidly reverses its charge so that the transformer 57 comes out of saturation leaving capacitor 68 with the "red" voltage. After a further line period during which capacitor 68 has barely discharged, thyristor 62 is turned on so that some of the charge in capacitor 68 is transferred to capacitor 64 leaving capacitor 68 with the "green" voltage. An overload relay 50 is provided. In Figs. 3 and 5 (not shown), capacitor 64 is connected via a diode across the D.C. supply so as to provide energy recovery.
Patent GB-1361863-A (GB)
Title: Piperazine derivatives their preparation and pharmaceutical  compositions containing them
IPC: C07D295/092
Filed: 1972-09-25
Abstract: 1361863 Piperazine derivatives PFIZER Ltd 25 Sept 1972 [24 Sept 1971] 44615/71 Addition to 1325876 Heading C2C Novel piperazine derivatives of the formula wherein (1) R is thioureido, thiocarbamoyl, cyano, carboxy, N-aminocarbamoyl or C 1-6  alkoxycarbonylamino, R<SP>1</SP> is H, halogen or C 1-6  alkyl; R<SP>2</SP> is H or C 1-6  alkyl; R<SP>3</SP> is H, halogen, C 1-6  alkyl or C 1-6  alkoxy; n is 1 or 2; and X is O or S, and those wherein (2) R is ureido, thioureido, sulphamoylamino, carbamoyl, thiocarbamoyl, sulphamoyl, C 1-6  alkoxycarbonylamino, cyano, carboxy C 2-7  alkoxy carbonyl or N- aminocarbamoyl; R<SP>1</SP> is one or two methoxy groups; and R<SP>2</SP>, R<SP>3</SP>, n and X are as defined above; the esters of those compounds in which R<SP>2</SP> is H; and the N-oxides and pharmaceutically acceptable acid addition salts thereof are prepared by reacting the corresponding epoxides of the formula with the appropriate N-phenylpiperazines, and, if desired, converting the resulting compound, in which R<SP>2</SP> is H, into the corresponding ether or esters.  Pharmaceutical compositions, suitable for oral or parenteral administration, contain the above novel compounds or esters, N-oxides or acid addition salts thereof and pharmaceutically acceptable carriers. The compounds possess hypotensive activity.
Patent GB-1082485-A (GB)
Title: Improvements in or relating to signal processing apparatus
Inventor: DARLINGTON SIDNEY
IPC: H04B1/66
Filed: 1964-11-03
Abstract: 1,082,485. Bandwidth compression and expansion apparatus. WESTERN ELECTRIC CO. Inc. Nov. 3, 1964 [Nov. 4, 1963], No. 44702/64. Heading H4R. Signals having a particular frequency bandwidth and time scale are either expanded in their bandwidth with consequent reduction in their time scale, or compressed in their bandwidth with consequent increase in the time scale by modulating the signals with a swept frequency oscillator and applying the resulting signal to a dispersive delay device. A preferred embodiment for converting time division multiplex pulses to frequency division multiplex pulses comprises, Fig. 1, a shaping network 11 which converts the rectangular pulses from the multiplexer 10 to a harmonic like oscillation of initially increasing and subsequently decreasing amplitude with a peak amplitude at the time corresponding to the time of origin of the rectangular pulse by means of a network having sin x a sine function response (i.e. -). The x rectangular pulses also synchronize a sweep frequency generator 14 which supplies carrier oscillation to a mixer 12. The resulting signal, i.e. sine function pulses at frequencies corresponding to their times of occurrence, are fed to the dispersive line 15 whose characteristic is such that the times of occurrence of the pulses at the output of the line are simultaneous. The resulting simultaneous pulses are then fed to a mixer 16 to be demodulated by a transposed version of the sweep frequency oscillator output to remove the sweep frequency component in the pulse output and to transpose the centre frequencies of the frequency multiplex pulses to the required frequency band. A converter for the conversion of frequency multiplex to time division multiplex pulses is also described, Fig. 2 (not shown), in which the frequency multiplex pulses synchronize and are mixed with the output of a sweep frequency generator before being fed to a dispersive line having, e.g., complementary characteristics to the line used in Fig. 1. The line output is then fed to an envelope detector to produce time multiplex pulses to feed to a utilization device. The required characteristics of the dispersive line are derived mathematically.
Patent GB-1392059-A (GB)
Title: Compacting system for stacking bulk hay
IPC: A01D85/00
Filed: 1972-09-27
Abstract: 1392059 Compressing hay EZRA C LUNDAHL Inc 27 Sept 1972 [4 Nov 1971] 44703/72 Heading B5F [Also in Division B8] A vehicle 2 for collecting and compressing hay comprises a pick up rake 32 and a blower 34 delivering the hay through normally engaged telescopic shoots 30, 26 to a receptacle 10 provided with a vertically movable compacting head 12. The head 12 is constructed and operated as in Specification 1,392,057, except that its top and side walls have a fixed angular connection and are not hinged together. In addition a single double acting fluid cylinder may replace the two linked operating cylinders. To allow continuous operation doors 38 actuatably by a wheel 40 engaging a bracket 39 are provided to form an accumulator chamber as in Specification 1,392,058. To unload the formed stack the end door 135, Fig. 7, of the receptacle 10 is raised by fluid cylinders 142 raising arms 146. The door 138 in rising engages flanges 154 of the door 140 of the head 12 to raise it also. The vehicle is now tipped by a fluid cylinder 134 and endless chains 156 are operated to discharge the stack. To avoid actuating the door 38 during the tipping movement a chain 45 anchored at 53 tensions to retract the bracket 39 against spring 43 to a position out of contact with the wheel 40. A modified end door construction has the door of the head 12 pivoted thereto and connected by rails, slidable in brackets, to the door of the receptacle 10 so that a fluid cylinder comes between the head 12 and a bracket on its door can swing both door up to an open position.
Patent GB-1524546-A (GB)
Title: Anti-theft fastening device and tool for releasing same
IPC: E05B73/00
Filed: 1975-10-29
Abstract: 1524546 Fastening device I D ENG INC 29 Oct 1975 [30 Oct 1974] 44748/75 Headings E2A and E2B A fastening device 10 comprises (a) a non- metallic housing 24 closed at one end and at the other end having a recess 30 and a central opening 28, (b) a retaining ring 30 located in the recess 30 and having a surface 58 tapering inwardly toward the open end, (iii) an insert 26 of magnetic material loosely received in housing 24 and having an axial bore 48 and at least one transverse bore 42 at its lower end, (iv) a pin 52, the shank 50 of which extends into the axial bore 48, (v) retaining balls 44, 46 in bores 42 and (vi) a spring 38 biassing insert 26 toward the open end of the housing so that surface 58 urges balls 44, 46 inwardly to retain the pin in the bore 48, the pin being released by moving the insert away from the ring by a releasing tool.
Patent GB-1402324-A (GB)
Title: Paper coating compositions
IPC: D21H19/58
Filed: 1972-09-29
Abstract: 1402324 Paper coating compositions BADISCHE ANILIN- & SODA-FABRIK AG 29 Sept 1972 [2 Oct 1971] 44979/72 Heading C3P Aqueous paper coating compositions contain, for every 100 parts by weight of finely divided pigment, from 2 to 25 parts by weight of a synthetic binder comprising (A) a mixture of (a) an emulsion polymer of from 65 to 100% by weight of at least one monovinyl aromatic monomer (e.g. styrene, α-methylstyrene or vinyltoluene), up to 20% by weight of which may be replaced by acrylonitrile, from 0 to 35% by weight of at least one acrylate of C 1-12  non- tertiary alkanol and/or methacrylate of a C 4-12  non-tertiary alkanol, and from 0-10% by weight of at least one olefinically unsaturated monomer containing a carboxylic acid group or a substituted or unsubstituted carboxylic acid amide group, and (b) an emulsion polymer of from 80 to 100% by weight of at least one acrylate and/or methacrylate as defined in (a), from 0 to 20% by weight of at least one monovinyl aromatic monomer and/or acrylonitrile, and from 0 to 10% by weight of at least one acid or amide monomer as defined in (a), said emulsion polymer (b) having been prepared in the absence of special precautions (i.e. in the absence of a significant amount of chain transfer agent) reducing its molecular weight to or below a level corresponding to a K value of 40, and/or (B) a copolymer (c) which has been prepared in two stages, an emulsion polymer (a) or (b) as defined above being prepared in the first stage and the monomer(s) of the other polymer (b) or (a) being emulsion polymerized in the second stage, in an aqueous dispersion of the first stage polymer, in relative proportions within the ranges specified above; the proportions of polymer (a) and polymer (b) and the proportions of the first and second stages of copolymer (c) being such that the total quantities of monomers used are such as would provide a conventionally prepared random copolymer having a glass temperature of from - 20 to + 30 C. The pigment is generally china clay although in some cases titanium dioxide and synthetic pigments, e.g. those based on finely divided styrene polymers, may be used.
Patent GB-1199933-A (GB)
Title: Improvements in or relating to Optical Pattern Recognition
Inventor: YARNELL JOHN
IPC: G06V10/88
Filed: 1966-10-07
Abstract: 1,199,933. Character recognition. HAWKER SIDDELEY DYNAMICS Ltd. 30 Nov., 1967 [7 Oct., 1966], No. 45054/66. Heading G4R. In a pattern recognition system, the crosscorrelation function of the unknown pattern and each of a set of reference patterns is formed optically and which of the functions exhibits polar symmetry is detected. An electronic image reproducer KP sees the unknown pattern C through a transparency T of the reference patterns and produces the crosscorrelation functions on arrays of photo-cells D1, D2. Reproducer KP is controlled to centre a cross-correlation function by nulling the differences of the outputs of opposed pairs of the photo-cells a, a, b, b, composing array D1 (Fig. 2A). Then if the differences of the outputs of opposed pairs of the photo-cells composing array D2 (Figs. 2B or 2C) are zero the crosscorrelation function has polar symmetry and is therefore an auto-correlation function i.e. the reference pattern equals the unknown pattern. This is only true if no more than one reference pattern has polar symmetry by itself and if this is not normally so an asymmetric mark is added to the unknown pattern's image by a mask and is present on each reference pattern on transparency T. An array D2 is present for each reference pattern. Similarly other components may be present in multiple.
Patent GB-1330516-A (GB)
Title: Corrosion prevention
IPC: C23F11/18
Filed: 1970-09-22
Abstract: 1330516 Inhibiting corrosion NIPPON OIL CO Ltd 22 Sept 1970 [24 Sept 1969] 45098/70 Heading C7E Corrosion of steel by a fluid containing water, ammonia, and hydrogen sulphide, the concentration of ammonia being not less than 1000 ppm and the molar concentration of H 2 S being not less than that of ammonia, is inhibited by adding to said fluid at least one of elemental S, ammonium polysulphide, or alkali metal polysulphide. Typically, elemental S is added in amount 5ppm to 0À3 wt per cent and the polysulphides, e. g. of NH 4 , Na, or K, are added in amount 15 ppm to 1 wt per cent.
Patent GB-1374714-A (GB)
Title: Injection blowmoulding apparatus
IPC: B29C37/00
Filed: 1972-09-29
Abstract: 1374714 Injection blow-moulding K AOKI 29 Sept 1972 [29 Sept 1971 12 Nov 1971 13 Nov 1971 19 Nov 1971] 45138/72 Heading B5A Injection blow-moulding apparatus comprises a member having mounted thereon two moulding cones having their axes at right angles to one another and each having a blowing hole therethrough, the member being rotatable around an axis bisecting the angle between the axes of the cores and movable horizontally forwardly and backwardly, a parison forming injection mould to receive the horizontally disposed core and a blow mould to receive the vertically disposed core with the parison thereon, an hydraulic device for opening, closing and clamping the moulds and an injection device co-operating with the injection mould. As shown in Fig. 3, the apparatus comprises an injection mould 7 operable by rods (11) of rams (12, Fig. 5, not shown), a blow mould 8 operable by toggle mechanism 20 by ram 18, and a pedestal 4 carrying cores 1, 2, rotatable about an axis bisecting the cores by motor 5 and movable between advanced and retracted positions by ram 9. In the position of Fig. 3, a parison 6 is formed on core 1 in injection mould 7 by injection from device 13 while article 24 is blowmoulded on core 2 in blow-mould 8 by air supplied through core 2. Moulds 7, 8 are then opened and bottom section 16 of blow-mould 8 lowered by ram 17. Pedestal 4 is retracted by plunger 9a so that the bifurcated end of stripper plate 22 engages the neck of article 24, and plate 22 is then lowered by ram 23 to strip article 24 from core 2. Pedestal 4 is rotated by 180 degrees by device 5 about its axis and plunger 9a advanced and moulds 7, 8 closed so that core 2 is horizontally disposed in injection mould 7 and core 1 is vertically disposed in blow-mould 8. Bottom 16 is raised to pinch the bottom of the parison. Stripper plate 22 is again raised. The process proceeds as above, but with cores 1, 2 transposed, the cycle being repeated indefinitely. In an alternative embodiment, (Figs. 7-17, not shown), the apparatus includes an injection mould 7 having a single body part but with separable neck mould parts (7a), which together with blow-mould halves 8 are mounted on clamping plates (26) opened and closed by rams (11). Pedestal 4 is mounted on seating member (4a) formed integrally with cylinders (30) which slide on rods (34) for forward and backward movement of the pedestal. In this embodiment, the stripping device (39, Figs. 16, 17, not shown) comprises a rigid fork (48) engaging core 2 above the top of article 24 and an arm (51) carrying jaws (50) resiliently biased together to engage the neck of article 24. Fork (48) and arm (51) are both mounted on rod (47) vertically movable by cylinder (42) and pass over a fixed rod (52). As rod (47) is lowered, article (24) is pushed off core 2 by fork (48) but held by jaws (50) until the enlarged end (52a) of rod (52) pushes apart the jaws (50) to deliver article 24 on to conveyer (53).
Patent GB-1356332-A (GB)
Title: Tyre repair body
IPC: B29C73/06
Filed: 1971-09-29
Abstract: 1356332 Repairing tyres STAHLGRUBER OTTO GRUBER & CO 29 Sept 1971 [29 Sept 1970] 45429/71 Heading B7C A tyre repair body for repairing a hole-like or tear-like damaged spot in a tyre comprises a patch 1 for covering the damaged spot from the interior of the tyre, and a stem 5 for insertion into the damaged spot, the stem being formed from a rubber structure including a member of elastic vulcanized rubber substantially or completely surrounded by a mass of pliable unvulcanized rubber which remains unvulcanized in use of the body in a tyre, the rubber structure being bent into a U-shape and the arms of the U being connected at their ends to the patch 1 such that the stem 5 is formed with a loop 9 at its free end for accommodating a tool to pull the stem through a damaged spot. The rubber structure may, as shown comprise layers 6, 7 of the elastic vulcanized rubber and the pliable unvulcanized rubber and an outermost layer 8 of unvulcanized rubber which is vulcanizable to connect the stem to a tyre. The arms of the U may be connected to one another adjacent the patch and the rubber structure may be rectangular in cross-section. The patch 1 may comprise a layer 2 of vulcanized rubber which may contain fabric reinforcing layers, a layer 3 of unvulcanized vulcanizable rubber for connecting the patch to a tyre, and a removable protective layer 4 on the layer 3.
Patent GB-1318604-A (GB)
Title: N-azolyl sulphenamides
IPC: C08K5/46
Filed: 1970-09-24
Abstract: 1318604 N-Azolyl sulphenamides MONSANTO CO 24 Sept 1970 [25 Sept 1969] 45530/70 Heading C2C [Also in Division C3] New sulphenamides have the formula where R is alkyl, cycloalkyl, aralkyl, aryl or alkaryl in which the aryl groups may be substituted; R<SP>1</SP> is hydrogen, C 1-5  alkyl, cycloalkyl with 5 to 12 carbon atoms in the ring, or R<SP>11</SP> S where R<SP>11</SP> has the same meaning as R and may be the same or different from R; and T is 2-thiazolyl, 2-benzothiazolyl, 2-benzoxazolyl, 2-benzimidazolyl or a substituted derivative of any of these groups, provided that T is not 2-thiazolyl or a substituted derivative thereof except 2-benzothiazolyl when R<SP>1</SP> is hydrogen and may be prepared by reacting the corresponding sulphenyl chloride with the 2-amino derivative of thiazole, benzothiazole, benzoxazole, benzimidazole or a substituted derivative thereof. The compounds inhibit the vulcanization of rubber (see Division C3) while those where R is alkyl or aryl have bactericidal properties.
Patent GB-1314865-A (GB)
Title: Liquid type electrophotography developing apparatus
IPC: G03G15/10
Filed: 1970-09-25
Abstract: 1314865 Electro-photographic apparatus FUJI PHOTO FILM CO Ltd 25 Sept 1970 [26 Sept 1969] 45922/70 Heading G2H An electro-photographic apparatus comprises photo-sensitive paper 1, a corona discharging device 7, an exposure station bounded by a white frame forming device, roller 15 and blade wheel 12 for applying a liquid of high electrical resistance to both sides of the exposed paper, developing electrodes 27, 28, 29 and 30 in the form of drums with protrusions 404 (see Fig. 4) for maintaining the exposed paper spaced from the developing electrodes and moving at the same speed as the electrodes, developing solution supply devices 31, 32, 33 and 34 for supplying developer between the drum and the paper, scraper means 35 and 36 for excess developer, and a cleaning bath 45. The distance between the drum and paper may vary from 0À05-5mm from drums 27-30 and the surface of the drums may have fine holes therein or be of wire mesh. In other embodiments the drums may be disposed in a straight line (see Fig.2) or the developing electrode may take the form of an endless belt (see Fig.3). The paper may be fed intermittently through the exposure station and/or the developing bath. The exposed portion of the paper is maintained in face to face relationship with the developing electrode.
Patent GB-1451082-A (GB)
Title: Exposing scanners for image reproduction
IPC: H04N1/405
Filed: 1973-10-02
Abstract: 1451082 An exposing scanner CROSFIELD ELECTRONICS Ltd 16 Sept 1974 [2 Oct 1973] 45988/73 Heading H4F An exposing scanner for reproducing images on light sensitive paper 4 comprises a revolving drum 5 for mounting the paper and a scanning head 6 mounted on a lead screw 7. The head 6 comprises a row of light emitting diodes 8 which produce a strip of light on the paper 4 the light intensity of the diodes being uniformly varied in response to a common input signal. The common input signals come from a conventional input scanner 9 and are received and amplified by an amplifier 10. A current control unit 11 containing respective control circuits for each diode permits the response of the diode to be adjusted to provide uniform intensity across the line or any required intensity profile. The control circuit for producing continuous tone images by uniformly varied intensity of the diodes in response to the common input signal. is described with reference to Fig. 2 (not shown) and that for producing half tone images constructed of dots of varying intensity produced by switching some or all the diodes on or off in Fig. 3 (not shown). The light emitting diodes may be of the gallium arsenide or gallium phosphide type. Red emitting diodes may be used with panchromatic film and green emitting diodes may be used with orthochromatic film. The optical system may include an aperture to define the size of the spot.