baber/WOPTO huggingface dataset:
Patent GB-1093197-A (GB)
Title: Method of splitting up a semiconductor wafer into individual semiconductor chips
IPC: B65B31/00
Filed: 1966-11-11
Abstract: 1,093,197. Semi-conductor processing. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 11, 1966 [Nov. 23, 1965], No. 50581/66. Heading H1K. A second semi-conductor wafer is broken into individual chips by first placing the wafer in a resilient material envelope 5, preferably transparent, evacuating and sealing the edge of the envelope by for example, thermal contact welding with electrodes 8. The wafer is then broken such as by rolling a roller across it, the chips being maintained in position by atmospheric pressure on the evacuated envelope. The welded seams are cut away and the free top surface of the envelope lifted to expose the individual chips still in orderly arrangement for subsequent removal by, for example, a suction lifting device.
Patent GB-1397257-A (GB)
Title: Method for producing pure 3,6-dioxo-4-hydroxy-tetrahydropyridazines
IPC: C07D237/16
Filed: 1972-11-03
Abstract: 1397257 Purifying pyridazine derivatives BYK GULDEN LOMBERG CHEMISCHE FABRIK GmbH 3 Nov 1972 [5 Nov 1971] 50750/72 Heading C2C Compounds of formulae are purified by forming their salts with organic nitrogen bases, recryatallizing the salts from an organic solvent, and recovering the desired pyridazine derivative by decomposing the salts with acids. In the formulae, R 1  and R 2  are each C 1-5  alkyl, Ph (possibly halogen- or alkylsubstituted) or Ph-C 1-5 -alkyl, and R 3  is C 1-5  alkyl, Ph, Ph-C 1-5 -alkyl or an up to C 6  alicyclic radical. In an example, the intermediate salts are formed from 1,2-diphenyl-3,6-dioxo-4-hydroxy-5-n-butylpyridazine and morpholine, piperidine, dicyclohexylamine or diethanolamine.
Patent GB-1011960-A (GB)
Title: Scrapless heading
IPC: B21J9/02
Filed: 1963-12-30
Abstract: 1,011,960. Extruding; heading. NATIONAL MACHINERY CO. Dec. 30, 1963 [March 13, 1963], No. 51161/63. Addition to 976,223. Headings B3H and B3P. In the cold forming of a bolt, screw or the like according to Specification 976,223, means 50b, Fig. 3, are provided at one or more die stations to prevent rotation of the headed workpiece as it is introduced into or ejected from the die. Circular stock 8 is fed by rollers against an adjustable stop 32 at station 10, severed by a vertical knife 16 and moved by spring-biased transfer fingers 26, Fig. 2 (not shown), to an extruding station 11. Here the shank of workpiece B is extruded through a die throat 41b and its ends are squared. An ejector 42 is provided. At station 12 a preliminary head 47 with rounded corners is upset whilst a chisel point 50b on ejector pin 50 forms a location recess in the end of the workpiece. The ejector pin 50 is prevented from rotating by means 50c, 50f. In a modification, Fig. 15 (not shown), the extrusion and preliminary heading are performed at a single station. At station 13 the workpiece is oriented by a spring-loaded finger 68, Fig. 5, on the heading punch 57, 58 which finger has a surface 69 to engage the underside of the preliminary head and is pressed back as the blank is inserted in the die 49. During insertion, the recess in the end of the blank is engaged by a projection 79 on ejector pin 73 which has been held in its forward position by a spring-loaded locating pin 74<SP>1</SP>. In this die the head is further upset and its bottom corners are squared and a preliminary washer face formed by localized pressure against a sleeve 52, Fig. 6 (not shown). At a final die station 14 the head and washer face are finished. Ejector rods 103, 109 are provided for both the punch and die. The ejector rods are all actuated by rocking arms and linkage from the press slide which is driven by a crank-shaft. In another embodiment, Fig. 13 (not shown), the shank of the bolt has a cylindrical portion adjacent the washer face. In a further embodiment, Fig. 14 (not shown), extrusion of the shank is performed at the final station.
Patent GB-1235510-A (GB)
Title: Laser beam alignment apparatus
IPC: G01C15/00
Filed: 1968-11-04
Abstract: 1,235,510. Lasers. PERKIN-ELMER CORP. 4 Nov., 1968 [8 Nov., 1967], No. 52109/68. Heading H1C. [Also in Division H4] One of the resonator mirrors of a laser is modified so that an index of the centroid of the visible output beam of the laser is established. The laser is used in apparatus for aligning a body in space with respect to the laser light beam which is used as a reference point. A helium neon laser includes a gaseous active medium contained in tube 52 positioned between mirrors 66, 68 of the resonant cavity, bellows 70, 72 permitting axial movement of the mirrors to tune the laser. Mirror 68 includes a glass substrate coated with dielectric reflective material, a cross being formed on the surface of the substrate upon which the dielectric material is deposited by scribing lines in mutually perpendicular directions thereby eliminating reflectivity in this area. The mirror supports a TEM1,1,n mode and suppresses other lower order modes and the beam pattern, Fig. 5, having high light intensity segments 40, 42, 44, 46 and a cross of zero light intensity exists in both the near field and the far field. The light beam from the laser is directed on to a planar array of photo-cells, Fig. 2, mounted on a machine tool or workpiece which is to be accurately aligned with a reference point defined by the intersection 29 of the axes of the planar photo-cell array. If the light beam from the laser is such that its centroid is displaced from the intersection 29 voltages of a polarity and amplitude indicative of the direction and magnitude of the displacement of the centroid of the impinging laser beam are produced at terminal 30 or 31. These output voltages are applied by a cable to an indicator, Fig. 3 (not shown) having X and Y channels, each channel including an operational amplifier and a centre reading output meter. By altering levelling screws on the workpiece or tool the intersection 29 of the photo-cell array can be brought back into alignment with the centroid 48 of the laser beam. The use of a light beam having a pattern which concentrates on the boundaries between the photo-cells increases the accuracy.
Patent GB-1083329-A (GB)
Title: Improvements in method for making organosilicon hydrides
IPC: C07F7/12
Filed: 1964-12-22
Abstract: Diorganohalosilanes of the formula R2Si(H)X, where R is a monovalent hydrocarbon radical which may be halogenated and X is a halogen atom, are produced by the reaction of diorganodihalosilanes of formula R2SiX2 with 0.5 to 2 moles of sodium or potassium borohydride per mole of diorganodihalosilane in the presence of at least 10% by weight of the diorganodihalosilane of a nitrile or an ester, or a mixture thereof which is or are inert to the reactants. The borohydride may be present as the chemical compound or be prepared in situ from (a) 0.5 to 2 moles per mole of diorganodihalosilane of a metal hydride YH, where Y is sodium, potassium, rubidium or cesium, and (b) up to 5% by weight of the diorganodihalosilane of sodium or potassium borohydride.  Esters which may be used include:-ethyl formate, ethyl acetate, ethyl propionate, ethyl butyrate, n-propyl formate, n-propyl acetate, esters of butyric, valeric, isovaleric and acrylic acids, dimethyloxalate, diethyl adipate, diethyl succinate, and dimethylphthalate.  Nitriles which may be used include:-chloroacetonitrile, acetonitrile, propionitrile, butyronitrile, crotonitrile, benzonitrile, succinodinitrile, adipodinitrile and glutarodinitrile. Radical R may be:-alkyl, aryl, aralkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, haloalkyl or haloaryl.  The examples describe the preparation of diphenylchlorosilane and dimethylchlorosilane.
Patent GB-1247858-A (GB)
Title: Improvements in and relating to photosensitive compounds
IPC: G03C1/52
Filed: 1968-11-05
Abstract: 1,247,858. Coating diazotype materials. RICOR K. K. Nov. 5, 1968 [Nov. 29, 1967], No. 52456/68. Heading G2C. Two-component diazotype compositions are prepared by adding to an aqueous solution containing polyvinyl alcohol, ethylated starch or etherified starch a coupler which is either a polyhydroxyphenyl carboxylic acid or a sodium salt of a substituted polyhydroxyphenyl carboxylic acid and then adding a diazonium salt to the solution. Specified couplers are phloroglucinol carboxylic acid, resorcinol carboxylic acid, the soldium salt of 3, 5-dichloro-2, 4-dihydroxybenzoic acid and the sodium salt of 2, 6-dihydroxy - 4-benzoyloxy-benzoic acid. The composition may be coated on to a support rubbed with silica and polyvinyl acetate. The light-sensitive composition may contain polyethylene glycol or hydrochloric or sulphuric acid and may be developed by heating.
Patent GB-1082669-A (GB)
Title: Portable unit for potable water
IPC: B01D29/00
Filed: 1964-12-28
Abstract: <PICT:1082669/C1/1> Purified drinking water is obtained by removing a filter element 1 from carrying case 2, immersing it in a river and sucking water through the element and up tube 17 held in the mouth. Element 1 comprises a bacteria - removing filtering membrane of pore diameter less than 0.5 microns and a bed of sorbent material 15. The filtering membrane may be of pleated hollow form (Fig. 3, not shown), or may be a pleated membrane forming one side of a rectangular box (Figs. 4-6, not shown).  The membrane may comprise a deposit of fibres of diameter 2 microns or less and/or particles of average diameter below 10 microns of glass, asbestos, plastics, rubber, metals, natural fibres, active carbon, minerals &c. (details given). Bactericides &c. such as silver halides may be included in the deposit, which is formed on porous paper or sintered metal or plastics powders, plastic foam, wire mesh, cloth, felt &c.  The deposit is applied as a suspension, whose fluid part is then washed out. The sorbent 15 may be granular active carbon, glass wool or powder, chabicite, pumice, active alumina, silica gel, chromic oxide gel, quartz crystals, Fuller's earth and glaucosil.
Patent GB-1445751-A (GB)
Title: Production of filler material
IPC: C01F7/767
Filed: 1973-11-13
Abstract: 1445751 Satin white LAFARGE 13 Nov 1973 [13 Nov 1972] 52586/73 Heading C4A A process for the preparation of ettringite which comprises adding water to, and thereby hydrating a substantially stoichiometric mixture of at least one calcium aluminate and at least one calcium sulphate at a temperature of from 20 to 100 C. to give ettringite, the amount of water which is added being at least the stoichiometric amount for one of the reactions: (1) CaO,Al 2 O 3  + 2(CaO,H 2 O) + 3(CaSO 4 , 2H 2 O) + 24H 2 O # (CaO) 3 Al 2 O 3 , 3CaSO 4 , 32H 2 O (ettringite); (2) (CaO) 3 Al 2 O 3  + 3(CaSO 4 ,2H 2 O) + 26H 2 O # 1 ettringite; (3) CaO(Al 2 O 3 ) 2  + 5(CaO,H 2 O) + 6(CaSO 4 , 2H 2 O) + 47H 2 O# 2 ettringite; (4) 12CaO,7Al 2 O 3  + 9(CaO,H 2 O) + 21(CaSO 4 , 2H 2 O) + 173H 2 O # 7 ettringite; (5) CaO,6Al 2 O 3  + 17(CaO,H 2 O) + 18(CaSO 4 , 2H 2 O) + 139H 2 O # 6 ettringite; and at most an amount such as to obtain after the reaction a product containing 5% (dry) ettringite and 95% (by weight) water. The mixture may also comprise a calcium silicate, e.g. Portland cement.
Patent GB-1272257-A (GB)
Title: Line pressure control system for automotive automatic transmission
IPC: F16H47/08
Filed: 1969-10-29
Abstract: 1,272,257. Change-speed control. NISSAN MOTOR CO. Ltd. 29 Oct., 1969 [30 Oct., 1968], No. 52937/69. Heading F2D.  The servo line-pressure actuating ratioselecting clutches and brakes in a torque-con-  verter-driven automatic transmission on a vehicle (shown as a Simpson 3-speed and reverse  planet gear set) is varied in response to turbineshaft torque by an electronic circuit in which torque of the final output shaft 11 is detected by phase displacement of axially spaced pick-ups 42, 43, and multiplied by the effective gear ratio in the transmission. The turbine torque curve (Fig. 3, not shown) is of the same form as its speed ratio curve, being descendant in the conversion range up to coupling point and constant (for constant engine torque) thereafter. In the torque sensor the sine outputs of the electromagnetic pick-ups 42, 43, from notchedwheels 40, 41 on the output shaft 11, squareshaped at 44, 45, and in phase at zero torque pass through differentiators 48, 49 to a flip-flop 52, which produces a square pulse in accordance with the phase displacement of the pick-ups, which is converted to a D.C. voltage in an integrator 55. The output is passed through resistors 60, 61, 62, which are successively shorted out by switches 57, 58, 59, actuated by the three ratios of the gear, and thence to load a regulator valve 63, not described, controlling servo line-pressure in the transmission. In Fig. 9 (not shown), the pick-ups 42, 43 are 180 degrees out of phase at zero torque, and their shaped outputs feed the D.C. integrator through an AND gate.
Patent GB-1535446-A (GB)
Title: Cathode ray colour tube
IPC: H01J31/20
Filed: 1976-12-20
Abstract: 1535446 Colour display cathode ray tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 Dec 1976 [23 Dec 1975] 53043/76 Heading H1D A colour display c.r.t. comprises colour selection means such as crossed electrodes 23, and 24, 25 at two different potentials for postfocusing, the higher potential electrodes being connected to a h.v. connection 36 of the tube, and the lower potential electrodes to the anode of a voltage stabilization rectifier (Zener diode) 40, the cathode being connected to the h.v. connection. A series array of diodes may be incorporated e.g. within ring 33 and shielded by edge 41. The lower voltage electrodes are charged negatively by the electron beams until the voltage difference attains the overall Zener voltage of the diodes at which point conduction occurs. The mutual capacitance of the electrodes is generally such that the p.d. is maintained if the beam current should temporarily fall. Otherwise a parallel connected capacitor may be used. In Fig. 4, apertured plate 23 is of iron, insulation 26 of glass, and the strip electrodes of vapour deposited Al. Plate 23 may be replaced by separate electrodes (13, 14) (Fig. 3, not shown). Potentials, and dimensions of grids, electron spots and phosphor stripes are exemplified. The focal distance of the quadrupole lenses may be 18 mm. at the centre and 12À7 mm. at the edge. The focus is everywhere just beyond the screen so that the focus ring is not visible. Screen fabrication may be photographically using two or more light sources, or by exposure to an electron beam.
Patent GB-1143026-A (GB)
Title: Tool for thermocompression bonding
Inventor: HYDE ROBERT JAMES
IPC: B23K20/00
Filed: 1967-11-23
Abstract: 1,143,026. Welding by pressure. STANDARD TELEPHONES & CABLES Ltd. 23 Nov., 1967, No. 53331/67. Heading B3R. A two part bonding tool for thermo - compression bonding of wire comprises a first part to locate a wire to be bonded and a second part movable relatively to the first to bond the wire. The first part comprises an elongated cylinder 1, Fig. 1, having a longitudinal 90 degree V-shaped groove 2. The second part 3, Fig. 5, is shorter than the other part and has a cross-section complementary to the other part and fits snugly into the groove. Both parts are tapered at one end. The dimensions of the groove and of the tip portion of the part 3 are such that the wire is fed deeper into the groove than the tip and bonding of the wire takes place close to but not actually at the end of the wire. In a modification a tapered hole is provided transversely through the tapered tip of part 1 to emerge in the groove. In operation a first tool according to the first embodiment and a second tool according to the modification are positioned over the surface to which a wire is to be bonded, a wire is blown by air through the transverse hole in the second tool and into the groove of the first tool so as to extend normally to the tool with only its end engaging the groove. The bonding part of the said first tool is lowered to bond the wire to the surface and this tool is removed. The bonding part of the second tool is lowered to sever the wire and carry it downwards and bond it to the surface.
Patent GB-1163526-A (GB)
Title: Weatherproof Building Units
Inventor: EDWARDS RAYMOND MONTAGUE
IPC: E04D1/26
Filed: 1966-11-30
Abstract: 1,163,526. Laminated building board. PERMANITE Ltd. 24 Oct., 1967 [30 Nov., 1966], No. 53693/66. Heading B5N. [Also in Division E1] A weatherproof building unit 1 presenting a visual effect of tiles or slates, e.g. for use as a roof or wall cladding, comprises a baseboard 2, e.g. of flax shive board, and a plurality of elongate strips 3. 4 of flexible water impermeable sheet material applied to one face of the baseboard longitudinally parallel with one another, the strips being disposed with adjacent strips in lateral partial overlapping relationship, the lateral portion of each strip not covered by an adjacent strip having formed thereon or applied thereto laterally extending markings 9 or laterally extending slits or cut-outs formed therein, the markings, slits, or cut-outs of each strip being offset with respect to those of the or each adjacent strip, the strips being secured to the baseboard at the lateral portions of the strips which are covered by an adjacent strip, and the ends of the strips at at least one end of the baseboard being staggered. Preferably the end edges of the staggered ends of the strips are spaced inwards from the adjacent edge of the baseboard. The strips 3, 4 may be of mineral coated roofing felt and the markings 9 may be produced by depressing the mineral granules into the bitumen. The strips 3, 4 are secured to the baseboard by nails 5, and to each other by strips of adhesive. The baseboards may be other than rectangular, and the markings 9 may represent square-butt or octagonal slates or tiles. In use of the units they are secured to roof beams by screws in a planar array, the joints between the baseboards being covered by additional strips of roofing felt marked and shaped to provide a continuous visual effect of tiles or slates. The exposed edges of the baseboards may be covered by metal angle strips.
Patent GB-1269472-A (GB)
Title: Vegetable trimming and cutting apparatus
Inventor: AAKESSON YNGVE REINHOLD
IPC: A23N15/00
Filed: 1969-11-03
Abstract: 1,269,472. Endless conveyers for vegetables. PRODUITS FINDUS S.A. 3 Nov., 1969, No. 53730/69. Heading B8A. [Also in Division A4] A conveyer for conveying vegetables in a slicing machine, has pockets (2) Figs. 1a and 1b, (not shown), each of which consists of a plurality of segments 15 each pivoted by a pin 20 to a ring 14 rotatably mounted by means of a ball race 27 inside a ring 26 attached to the conveyer and supported by rollers 28 on a rail 25. The pockets are rotated through 90 degrees between rotating knives (9) and (10) thus enabling the vegetable to be quartered, by the interaction of teeth 25 with projections, (not shown), on the machine. When the pockets are required to be closed a rail 22 is provided which engages a flange 18 at the lower end of segment 15. A vegetable is supported within the pocket by resilient projections 32.
Patent GB-1357205-A (GB)
Title: Model animals
IPC: A63H9/00
Filed: 1971-11-19
Abstract: 1357205 Toy animals BRABO CORP SANV 6 Sept 1972 [19 Nov 1971] 53864/71 Heading A6S A toy animal having a hard shell and a soft body, e.g. a turtle, snail, &c., but as shown a tortoise, comprises a moulding 2 of a hard material to represent the shell, formed with sockets 4 into which are forced separately moulded spigots 6 having enlarged heads 8 in turn forced into sockets 12 formed in a relatively soft moulding 10 representing the body. The shell 2 is injection moulded from a coloured plastics and the body 10 from natural or synthetic rubber, foamed p.v.c., &c.
Patent GB-1412438-A (GB)
Title: Diffusion into gallium arsenide
IPC: C30B31/16
Filed: 1972-11-22
Abstract: 1412438 Semiconductor diffusion INTERNATIONAL BUSINESS MACHINES CORP 22 Nov 1972 [2 Dec 1971] 54044/72 Heading H1K Zinc is diffused into a GaAs substrate in an evacuated container at a temperature between 800 and 1000 C. (e.g. 900 C.) in the presence of a two-phase system of Si and As to attain controllable shallow diffused regions. The Si-As system contains SiAs in the solid solution, and may comprise 2 to 50 (preferably 2À8) atomic per cent. As; it may be prepared as described in Specification 1,292,374. The dopant source may be Zn; ZnAs 2 ; Ga-Zn alloy; mixtures of Zn and As; ZnAs 2  and As; GaAs, ZnAs, and ZnAs 2 ; or preferably a homogenized mixture of Zu and GaAs. The substrate may be doped with Sn to a concentration of 1-3 x 10<SP>18</SP> atoms/cc.
Patent GB-1210578-A (GB)
Title: Coating glass
IPC: C03C17/25
Filed: 1968-11-15
Abstract: 1,210,578. Coating float glass during manufacture; pyrolytically coating oxides on glass. P.P.G. INDUSTRIES Inc. 15 Nov., 1968 [20 Nov., 1967], No. 54275/68. Headings C1A and C1M. A transparent colour-coated ribbon of glass is continuously produced by supporting a ribbon 10 of glass on a liquid bath 14 of tin-containing molten metal and in a reducing atmosphere which also contains tin atoms so that some of the tin is introduced into the upper surface of the ribbon 10, the ribbon 10 then passing into an oxidizing atmosphere where a coating composition containing a metal compound capable of pyrolysing into a coloured metal oxide at temperatures above 500‹ F. is applied to the upper surface of the ribbon while the surface is at a temperature between 500‹ and 1200‹ F., the composition being pyrolysed to a coloured metal coating and the tin in the surface being oxidized. Preferably the coating apparatus is removably positioned between the end of the float glass tank 15 and the annealing Lehr 25 and the atmospheres are protected by drapes 30, 32. The apparatus may be positioned also further along the annealing Lehr provided the temperature is still above 500‹ F. Coating apparatus.-Three fibreglass insulated spray guns 44, 45, 46 are arranged to extend obliquely downwards adjacent the ribbon 10 supported on rollers 18, 26, 27 and are mounted on rods 47, (48) and (49) to rotate and swivel about a vertical rod 50 and are supplied with coating composition through a manifold (51) from supply hose 56 and with pressurized air from hose 58. The spray guns are reciprocated across the ribbon from a motor (39) on a crossbeam structure 38 attached to a pair of brackets 37 having wheels 36 running on flanges of a pair of spaced beams 33, 34 drive being through sprockets 40, (42) on beam 38 and a chain (41) having a lug (54) to engage an open bracket (52) supporting rod 50. Vacuum hoods 61 fore-and-aft of the spray chamber 43 extend upwardly to a pair of exhaust pipes 62 and are removably mounted by wheels 64 riding on the upper flange 65 of beams 33, 34. The exhaust pipes 62 similarly have wheels 67 riding on lower flanges 69 of an overhead beam 70. When the spray apparatus is removed, refractory brick replaces in the space between tank 15 and lehr 25. Coating compositions.-Compositions particularly suggested are acetylacetonates of cobalt, iron, chromium or mixtures thereof, dissolved in an aliphatic or olefinic halocarbon or halogenated hydrocarbons which are non-explosive and non-flammable in the range 500‹-1200‹ F. The organic solvent may contain methylene chloride. A large number of examples are given. Glass Composition.-The glass used for ribbon 10 may be, in percentages by weight:-SiO 2  73À05; Na 2 O 13À68; K 2 O 0À68; CaO 8À91; MgO 3À85; Al 2 O 3  0À11; SO 3  0À37; Fe 2 O 3  0À128.