baber/WOPTO huggingface dataset:
Patent GB-919086-A (GB)
Title: Improvements in or relating to photoelectric shaft-position encoders
IPC: H03M1/00
Filed: 1960-10-24
Abstract: 919,086. Electric selective signalling systems. BALDWIN PIANO CO. Oct. 24, 1960 [April 21, 1960], No. 36442/60. Class 40 (1). In a photo-electric shaft position indicating system the shaft 22, Fig. 1, carries a disc 20 having four uniformly graduated concentric tracks, Fig. 3, which is sensed by a lamp 14 and four photo-electric cells 30A, 30B, 30C and 30D, the light that passes through the disc having to pass through a mask 28, Fig. 2, before reaching the cells. The mask 28 is so arranged that the outputs from the four cells lag behind each other, in the order A, B, C, D, by 90 degrees. In the subsequent circuits the outputs of cells 30A and 30C (which are 180 degrees out of phase) are combined in series opposition to give, after transistor amplification and shaping an "a" pulse train, and tne outputs of cells 30B and 30D are similarly combined to give a "b" pulse train. These last two pulse trains " a " and " b " differ in phase by 90 degrees and are used, Fig. 7, with four and gates 154, 156, 158 and 160 and a flip-flop 162, to produce a signal on a lead 166 which causes a counter to add or to subtract input pulses received on line 168, which pulses are positive when they are to be added and negative when they are to be subtracted.
Patent GB-1436411-A (GB)
Title: Thyristors
IPC: H01L29/74
Filed: 1973-08-01
Abstract: 1436411 PNPN devices SIEMENS AG 1 Aug 1973 [4 Aug 1972] 36584/73 Heading H1K A semi-conductor body includes a main thyristor section, and an auxiliary thyristor section for amplifying the ignition current, which sections have a common PNP (or NPN) zone structure one of the outer zones of which carries an ignition electrode, but have separate emitter zones, the auxiliary emitter being nearer the ignition electrode than is the main electrode. The centre zone of the structure includes a section or sections, not disposed beneath the main emitter zone, for which the quotient of the mean resistivity and the square of the thickness is greater than that for the remainder of the zone, whereby the breakdown voltage of the auxiliary thyristor is lower than that of the main one. In the Fig. 1 arrangement having shorted main and auxiliary thyristor emitters 11, 15 as shown the central section 23 of base zone 13 is of higher resistivity than the remainder of the zone. Such a base zone is produced by selection of a suitable section of a zone melted rod, or by etching a pit in a starting wafer and refilling it with higher resistivity material by epitaxy. In an alternative embodiment the zone is of uniform resistivity but the thickness of the section beneath the ignition electrode has been reduced by oxide masked etching. In each case the remaining zones are formed by diffusion.
Patent GB-1444977-A (GB)
Title: Lubricating composition
IPC: C10N30/04
Filed: 1973-08-01
Abstract: 1444977 Lubricants UNILEVER-EMERY NV 1 Aug 1973 [2 Aug 1972] 36594/73 Heading C5F [Also in Division C2] A lubricating composition comprises a synthetic base oil that is a diester, polyester or complex ester and 0À01% to 5% of a hydroxy ester containing in the molecule at least one free carboxyl group and at least one group where R is an alkyl radical (normal or branched, but preferably tertiary) or 4 to 21 carbon atoms. Suitable additives can be prepared by the partial esterification of hydrogenated dimers or trimers of fatty acids with glycidyl esters: The additive functions as an EP agent, other conventional additives (many listed) may also be present.
Patent GB-1006858-A (GB)
Title: Process for the production of a mixture of bromination products of salicylanilide
Inventor: MAJEWSKI THEODORE EUGENE
Filed: 1964-09-08
Abstract: Salicylanilide is brominated in a medium of 35-80% p-dioxan (balance water) to give a mixture containing mainly 3,41,5-tribromosalicylanide, up to 1% 41,5-dibromosalicylanilide, and also 3,5-dibromosalicylanilide.
Patent GB-1435955-A (GB)
Title: Benzoxanthene and benzothioxanthene dyestuffs and process for preparing them
IPC: D06P1/16
Filed: 1973-08-02
Abstract: 1435955 Benzoxanthene and benzothioxanthene dyestuffs HOECHST AG 2 Aug 1973 [4 Aug 1972] 36736/73 Heading C4P The dyes consist of a mixture of the isomers of the Formulµ (Ia) and (Ib) wherein X is O or S, R 1  is H, C 1 -C 20  alkyl, methoxycarbonylmethyl, ethoxycarbonylmethyl, lower alkoxy carbonyl or phenyl, R 2  is alkoxycarbonyl or C 1 -C 20 , lower acyl or benzoyl, cyano, carbonamido or phenylcarbonamido, R 3  and R 4  represent simultaneously H or lower alkoxy, or R 3  is lower alkoxy and R 4  is H, R 5  and R 6  are H, or halogen, lower alkyl, alkoxy or alkoxycarbonyl. They are prepared by condensing a benzoxanthene or benzothioxanthene-dicarboxylic and anhydride with the appropriate carboxyl compound to give the hydrazone and then cyclizing. They produce brilliant yellow to red dyeings on synthetic materials such as acetyl cellulose, polyamides and especially polyethylene-glycol-terephthalate (which may also be dyed in the mass). They may also be used as fluorescent dyestuffs for polymers such as polystyrene, polymethylmethacrylate and polyvinylchloride.
Patent GB-1046508-A (GB)
Title: Improved stuffing box mounting
Inventor: HANSEN GEORGE EDWARD
IPC: F16J15/18
Filed: 1963-09-18
Abstract: 1,046,508. Stuffing-boxes; valves. CRANE Ltd. Sept. 18, 1963, No. 36773/63. Headings F2B and F2V. In a stuffing-box assembly for a valve etc. the box 12 is clamped in position by a bonnet 8 and has a flange 13 engaging a recess 14 in the valve casing, a yoke 26 is secured to the box and the packing 27 is compressed by bolts 25 extending through the gland flange 31 and having square heads engaging lugs 19 formed on the bonnet 8. A gasket 15 is disposed between the flange 13 and the bottom of the recess 14. The yoke 26 has arms 33 to support an outer bearing (not shown) for the valve stem 4. The lugs 19 have slots 18 therein through which the shanks of the bolts 25 may be swung, as shown in dotted lines on the left-hand side of Fig. 1, when the packing is being inspected or replaced.
Patent GB-1268335-A (GB)
Title: Semiconductor device
IPC: H01L27/12
Filed: 1970-07-30
Abstract: 1,268,335. Semi-conductor devices. R.C.A. CORPORATION. 30 July, 1970 [6 Aug., 1969], No. 36925/70. Heading HlK. A semi-conductor device comprises a bonding pad, associated with a semi-conductor component, upon a dielectric substrate, the pad having a first semi-conductor layer in contact with the substrate, a metal layer on the semiconductor layer, a wire bonded to the metal layer, and a conductor connecting the pad and, component. The device, which may be a read only memory, may be formed on a substrate of sapphire, spinel, beryllium oxide or zirconium oxide by providing a doped silicon or germanium layer on the substrate and masking, etching and doping to form a plurality of bonding areas 30 and of diodes in semi-conductor strips 18. An insulating layer 26, of silicon dioxide or nitride may be formed over the semi-conductor material remaining, and channels etched in this layer in order to enable later contact to be made to the diode. A metal layer 50, e.g. of aluminium, nickel or titanium is deposited over the substrate and etched to form pad areas, and connections 20 to the diodes via metal portions 52. A connection wire 24 may be bonded ultrasonically to the metal pad area, and to further pads formed integrally with the strips 18. The structure is aimed at improving adherence of metal areas of bonding pads to dielectric substrates. In an alternative embodiment the insulation layer of the pad may totally enclose the semiconductor material of the pad. The dopants may be boron and phosphorus.
Patent GB-1018818-A (GB)
Title: Improvements in or relating to electric boiling vessels for liquids
IPC: H05B1/02
Filed: 1963-09-20
Abstract: 1018818 Thermal switches MONOGRAM ELECTRIC Ltd 14 Sept 1964 [20 Sept 1963] 37068/63 Headings A4A and AB2 [Also in Division H5] An electric kettle has the following features: (i) a thermostatic switch mounted externally in a channel in the dome, and covered by a part of the handle moulding; (ii) a thermal trip is housed below the bottom 2 of the kettle; (iii) a sliding switch 57 in the handle can over-ride (i.e. bridge) the thermostat contacts; (iv) the heater which preferably comprises two elements 6, 7 arranged as illustrated in Fig.2 (not shown), the larger of the two elements only being controlled by the thermostat; (v) a neon lamp 48 in the handle indicates when this element is energized. Thermostat, Fig.4. - Comprises a bi-metal strip 24 mounted in a groove 22 on the shell of the kettle to disengage a moving contact blade 34 from a fixed contact blade 29. The position of the fixed blade can be pre-set by an adjusting screw 42. The thermostat is secured to the kettle by bolts 26, 37, having large heads 27, 138 to help conduct heat from inside the kettle. Thermal trip, Fig.2. - Comprises a moving contact arm 8 pivoted at 10 and urged out of the engagement with fixed contact 11 by a spring 12. The trip is held closed by the heel 13 of the moving arm 8 engaging a bi-metal strip 14 mounted on a pillar 15 attached to the bottom of the kettle. An arm 17 depending from the heel 13 has a part 18 projecting through a slot in the cover whereby it can be reset.
Patent GB-812479-A (GB)
Title: Improvements in and relating to electromagnetic tape recording and reproducing
IPC: G11B15/14
Filed: 1956-12-04
Abstract: 812,479. Magnetic recording and reproducing apparatus. AMPEX CORPORATION. Dec. 4, 1956 [Dec. 13,1955], No. 37084/56. Class 40 (2). A method of recording and reproducing transverse tracks on a wide magnetic tape by means of a rotating wheel 22 carrying a plurality of transducer heads 23 which successively scan the moving tape, comprises the use of a modulated carrier for the recording of the signal, and the use of adjustable time delays 61, 62, 63, 64 in the circuits of the transducer heads 23 when reproducing to compensate for mechanical inaccuracies in the spacing of the transducer heads. In a case where the recording is used for picture signals and each scan represents a picture line, departure of the heads from exact quadrature would cause a visual displacement of the picture lines left or right of the screen. The use of adjustable time delays in the circuit of each head enables corrections to be made for errors in the spacing of the recording or reproducing heads. The general arrangement of the recording and reproducing apparatus, Figs. 1, 2 and 3, shows a wide tape 11 being drawn by a capstan 17 through a head assembly 18 and shaped into an arcuate section to engage the heads 23 mounted at equidistant points on the periphery of a rotating wheel 22 driven by a motor 19. The rate of travel of the tape through the assembly 18 is controlled by means of a pulse derived from a photo-electric cell 45 and a light source 43 which illuminates the rim of wheel 22 which is provided with a blackened sector D, Fig. 4. The pulses are fed through a cathode follower to frequency-dividing circuits to operate a synchronous motor M driving the capstan 17 and to a comparator whereby a phase comparison is made with a reference frequency, such as that of the mains supply, and utilized to apply compensating frequency changes to motor 19. During recording, the pulses are recorded along one edge of the tape 11 by head 2, so that the relative control of motors M and 19 is maintained the same during reproduction as in recording. A sound track may be recorded by head 4 on the other edge of the tape 11. Heads 1 and 2 are eraze heads preceded by the heads 2 and 4 respectively. Details are given of the general electronic requirements with reference to Figs. 6 to 9 inclusive (not shown) which show the general arrangement in block form. To allow for wear on the heads and the smaller radius of scan produced thereby the pressure block is provided with suction cavities 34 which produce a resistance to travel of the tape and increases the tension therein. The increased pressure of the transducers on the tape produces a local stretching to compensate for the reduced radius of scan. The amount of vacuum in cavities 34 is adjustable by means of a valve 29. Specifications 798,927, 798,928, 798,929 and 798,930 are referred to.
Patent GB-1086040-A (GB)
Title: Process for the sealing of plastics bags
IPC: B65B51/00
Filed: 1966-08-18
Abstract: 1,086,040. Bag closures. SOLVAY & CIE. Aug. 18, 1966 [Aug. 24, 1965], No. 37104/66. Heading B8C. A high strength closure seal is formed in a plastics bag by folding a laminated tape, having an inner layer (10) (Fig. 7, not shown) of the same material as that of the bag and a heatresistant outer layer (11), over the mouth and welding it to the side walls (2, 3). The bags may be of polyvinyl chloride or polyethylene whilst the outer layer (11) of the tape may be a natural or synthetic fabric, a polyamide or a linear polyester such as polyethylene terephthalate or a polycarbonate.
Patent GB-786932-A (GB)
Title: A continuous, pre-baked, anode for the electrolytic production of aluminium
IPC: H05B3/03
Filed: 1955-12-29
Abstract: 786,932. Electric furnace electrodes. VEREINIGTE ALUMINIUM - WERKE AKT.-GES. Dec. 29, 1955 [Jan. 7, 1955], No. 37325/55. Class 39(3) A continuous pre-baked anode 2 for the electrolytic production of aluminium i.e. an anode in which pre-baked replacement blocks are cemented on the top of the anode as the lower end is consumed, comprises two iron contact nipples 1 disposed on opposite sides of the anode, and the length 1a to which the nipples extend within the anode is less than 15 per cent of the extent 2a of the anode measured in the direction of the nipple axis. The nipples are removed before their temperature reaches 700‹C. and are protected from chemical attack by the anode material by a coating 4 thereon of a thickness exceeding 3 m.m. e.g. of 10 m.m. of a gas-tight compound poor in sulphur. The compound preferably comprises 60 parts of graphite, 26 parts of pitch coke of a grain side below 3 m.m. and 14 parts of molasses as a binder and has a sulphur content of under 0.5 per cent. The nipples are screwed, cast or rammed in place in the pre-baked anode sections 2, which are bonded together by a layer of cementing material 7. Members 3 support the anode and supply current.
Patent GB-622263-A (GB)
Title: Improvements in thread-advancing devices
IPC: D01D10/04
Filed: 1946-12-19
Abstract: 622,263. Thread-advancing reels &c. AMERICAN VISCOSE CORPORATION. Dec. 19, 1946, No. 37370. Convention date, Dec. 29. 1945. [Class 120 (ii)] A thread-advancing reel &c, which conveys thread carried in convolutions thereabout, comprises a first set of longitudinally extending bars rotatable about an axis, a second set of bars interdigitating with those of the first set mounted for rotation about an axis displaced from that of the first set, and means interdigitating with the bars of both sets for moving the thread relative to those bars in a direction comprising a component parallel to the axis of the reel &c. The reel may comprise bars 3 rotated about'the axis of,a fixed shaft 2 by a gear 12 and web 8, pins 32, engaging in recesses 33 of the flange 7, driving a flange 14 to which bars 4, interdigitating with the bars 3, are attached. The flange 14 rotates on an eccentric bearing surface 15 keyed at 16 to the fixed shaft 2. A third set of bars 5, interdigitating with sets 3 and 4, are driven by pins 30 which extend into recesses 31 in the flange 14, the bars 5 being carried by rigid elements 17 held in contact with bearing elements 18, 19 on eccentric bearing surfaces 23, 24, attached to the shaft 2; by garter springs 28, 29. The elements 17 are guided for sliding movement by lugs 27 on an annular plate 26 rotating with the bearing elements 18, 19. The eccentricity of the bearing 15 is disposed at about 90‹ to that of the bearings 23, 24, the bearing 24 having the greater eccentricity. Sealing membranes 34, 36 are secured to the reel to prevent treating fluids from reaching the bearing surfaces. In a modification, Fig. 3, the bars 3a are carried by a member 43 rotated by a shaft 40 whereas the bars 4a, 5a are carried by a member 45a. The bars 4a are rigid but the bars 5a are flexibly connected at 5a<SP>1</SP> to the end 46a of the member 45a. The bars 4a are attached to a flange 48 rotating on an eccentric bearing surface 51. The bars 5a, which are spring-biased outwardly, contact a cam surface 55 fixed to the stationary bearing 42. A sealing membrane 56, through which the bars 5a slidingly extend, may be included to keep treating fluids from the bearings. In still further modifications, the cam surface 55 may be replaced by a cam groove and the short flexible connections 5a<SP>1</SP> may be varied by attaching the bars 5a to a hub member secured to the shaft 40. The springiness of the arms 5a may be such that they only come into operation to support the thread, by centrifugal action, at a certain speed of rotation of the reel.
Patent GB-1414118-A (GB)
Title: Vinyl copolymers and semi-permeable membranes made therefrom
IPC: B01D71/40
Filed: 1971-08-10
Abstract: 1414118 Methacrylic acid copolymers BABCOCK & WILCOX Ltd 10 Nov 1972 [10 Aug 1971] 37438/71 Heading C3P A copolymer for making semi-permeable membranes comprises at least 30% by wt. of methacrylic acid and styrene or ethyl, propyl or iso-butyl methacrylate and has an intrinsic viscosity of 0À5 to 10 at 25 C. The copolymer may be prepared by emulsion or bulk polymerization at temperatures of 17-80 C. for emulsion polymerization and 80-100 C. for bulk polymerization. The resulting polymers are dissolved in suitable solvents and cast into films to form semi-permeable membranes. Specification 1,396,091 is referred to.
Patent GB-368840-A (GB)
Title: A solar compass
IPC: G01C17/34
Filed: 1930-12-12
Abstract: 368,840. Solar compasses. CHRISTIE, R. G., 23. West Park, Eltham, London. Dec. 12, 1930, No. 37522. [Class 97 (ii).] Course indicating apparatus comprises a tube containing a clock-rotated mirror adapted to cast an image of the sun on the centre of a disc carried by an outer tube in which the clockwork and mirror are mounted, divergence from the required course being indicated by movement of the image across the disc. In the form shown the tube B supporting the clockwork and mirror A can slide axially and rotate in the outer tube C. The tube B is set by the scale c to the longitude East or West of the time meridian as corrected by the scale c<1> for the equation of time and moved axially for the declination. The outer tube C is supported on a horizontal axis in the pedestals E by trunnions c<2> one of which carries a graduated toothed quadrant F enabling the tube C to be set according to the latitude by the screw G. The pedestals E are carried by a graduated disc I which can be rotated about a vertical axis in accordance with the desired course and clamped by the winged nut i<1>. The vehicle is then steered so that the image of the sun is in the centre of a translucent disc N, perforated with small holes and supported in gimbals M, L by arms l<1>, l<2> secured to the tube C. The clockwork may have a visible dial and two hands shewing, respectively, standard and summer time.
Patent GB-315186-A (GB)
Title: Improvements in or relating to vacuum distillation
IPC: B01D3/10
Filed: 1928-07-19
Abstract: 315,186. Burch, C. R., Bancroft, F. E., and Associated Electrical Industries, Ltd. July 19, 1928. Divided on 303,078. Column stills and rectifiers; evaporators and condensers in structural combination.-A vacuum distilling apparatus for distilling and fractionating oil &c. comprises a double walled vessel 53 containing a series of heated trays 43 surmounted by a baffle 46, the lips 157 of the trays projecting beyond the baffle at the depending edge 48 of the tray immediately above, so that discharge of vapours takes place past the edge of the baffle obliquely on to the walls of the vessel, thus entraining residual gas within the chamber and assisting the evacuation thereof. The vapours are condensed on the cooled wall of the chamber or alternatively on cooled baffles 21 arranged above each tray and provided with a gutter 32 in which condensate is collected and removed through pipes 33, 34. The apparatus is adapted for use in connection with the process and apparatus described in Specifications 303,078 and 303,079. Reference has been directed by the Comptroller to Specification 27500/10.
Patent GB-1278601-A (GB)
Title: A composition and method for producing a potato and potato chip flavor and aroma
IPC: A23L19/18
Filed: 1969-07-25
Abstract: 1278601 Potato chip flavour RESEARCH CORP 25 July 1969 [9 Aug 1968] 37547/69 Heading A2B [Also in Division C5] A method of producing a potato and potato chip flavour comprises heating methionine in the presence of oil. A reducing sugar (e.g. glucose, maltose or lactose) may be present. The heating may be effected at 50-220C and may be carried out under deep fat drying conditions. The flavour may be volatalised during the heating process, condensed and mixed with a solid or liquid carrier prior to use. The oil after the heating process may be vacuum steam distilled, and the resulting oil having the desired flavour may be used as a frying medium for potato slices, as a spray or as a salad dressing. The food may be present during the heating process to develop the desired flavour therein. Oils which may be used include tallow, coconut, palm kernel, sunflower, corn, soya, peanut and safflower oils, lard, hydrogenated oils, mineral oil and silicone oil.
Patent GB-768293-A (GB)
Title: Electrostatic developer composition
Inventor: RHEINFRANK JOHN JACOB
IPC: G03G9/087
Filed: 1954-12-30
Abstract: A xerographic toner powder comprises a polystyrene resin or blend of polymers of styrene and styrene homologues of the formula <FORM:0768293/IV(a)/1> wherein R is hydrogen or an alkyl group of up to four carbon atoms, which resin or blend has a ball and ring softening point of 125 DEG  C., polybutyl methacrylate in an amount of up to 25 per cent by weight and from 5 to 10 per cent by weight of pigment, such as carbon black, the powder having a particle size not exceeding 20 microns.  The powder may be mixed with a carrier consisting of particles comprising a core as of glass, steel or carborundum coated with a resin, as described in Specification 686,466, [Group XX].  U.S.A. Specification 2,484,782 also is referred to.