baber/WOPTO huggingface dataset:
Patent GB-1068248-A (GB)
Title: Semiconductor devices
IPC: C30B31/02
Filed: 1964-09-23
Abstract: 1,068,248. Semi-conductor controlled-rectifiers. RADIO CORPORATION OF AMERICA. Sept. 23, 1964 [Oct. 28, 1963], No. 38785/64. Heading H1K. A semi-conductor controlled-rectifier has sequential cathode, gate, base, and anode regions. The cathode and base regions are of one conductivity type and the gate and anode regions are of the opposite conductivity type. The impurity concentration in each of the gate and anode regions increases with increasing distance from the base region, the conductivity gradient of the anode region being steeper than that of the gate region. The manufacture of three of these devices is described with reference to Figs. 1, 2 and 3 (none shown). The device of Fig. 1 is manufactured as follows: Both major faces of a 20-40 ohm/cm. N-type silicon wafer are coated with a mixture of boron trioxide and ethylene glycol monomethyl ether and the wafer heated to provide P<SP>+</SP> layers 13, 15 of graded resistivity and with a surface impurity density of 10<SP>21</SP> atoms cm.<SP>-3</SP>. One of these layers is removed by conventional methods and the wafer heated in an oxygennitrogen atmosphere containing boron trioxide vapour at a level below saturation. This results in the formation of graded P-type region 17 with a surface impurity density of 2 x 10<SP>18</SP> atoms cm.-<SP>3</SP>. The thickness of the P+ region 15 is increased during this step. Both surfaces of the wafer are oxidized and treated to form masks 29, 291 so that the wafer may be exposed to phosphorus pentoxide vapour to form the N-type cathode region 19. Annular cathode electrode 21 and control gate electrode 24 are now provided. The connection to the gate region 15 may be a wire or part of the casing of the rectifier. In the device of Fig. 2 an N-type silicon wafer is heated in a non-oxidizing atmosphere containing boron trioxide to provide an overall P-type layer with a surface impurity density of 2 x 10<SP>18</SP>. After removal of the layer from the edge faces of the wafer, one major face is coated with a mixture of boron trioxide and ethylene glycol monomethyl ether and heated to provide the P+PNP structure of Fig. 2c. The wafer is then heated in steam, oxygen or air to oxidize the surface for masking and diffusion of phosphorus to form the gate region 35. The oxide is removed and the device completed similarly to that of Fig. 1. In the device of Fig. 3 an N-type silicon wafer is provided with a similar overall P-type layer to the wafer of Fig. 2. This layer is removed from all but one major face of the wafer. The N-type region thus exposed is coated with boron trioxide and ethylene glycol monomethyl ether and the wafer heated in a non-oxidizing atmosphere to provide P<SP>+</SP> region 65. Excess dopant is removed and the wafer heated in air or steam to oxidize its surfaces. An oxide mask is formed and phosphorus diffused into P-type region 67 to form the N-type cathode region 69. The device is completed similarly to those of Figs. 1 and 2.
Patent GB-985591-A (GB)
Title: Improvements in or relating to back supports
IPC: A61F5/02
Filed: 1962-10-12
Abstract: 985,591. Belts for personal wear. J. B. HOSKISSON. Oct, 4, 1963 [Oct. 12, 1962], No. 38789/62. Heading A3V. [Also in Division A5] A back-supporting belt comprises an inflatable cushion 1, preferably formed as sections la and 1b to lie on opposite sides of the wearer's spine, secured round the body by tapes 6. The cushion and its backing sheet 2 of thermoplastic material are covered with canvas 3 to which the tapes 6, which may be elasticated, are secured. Canvas-covered strips 13, of e.g. mild steel, for location against the wearer's abdomen carry loops 14 adjustable along the tapes 6.
Patent GB-1517805-A (GB)
Title: Control arrangement for a heating installation
IPC: F16K11/044
Filed: 1975-09-22
Abstract: 1517805 Valves ADOLPH SAURER AG 22 Sept 1975 [12 Nov 1974] 38848/75 Heading F2V In a control arrangement for a heating installation a mixing valve mixes a portion of the fluid returning from the radiators entering at B with boiler fluid entering at C, the resultant mixture flowing to the radiators at AB. A throttling element 31 in the return flow has the dual function of filtering and affecting the rate of flow. A hollow tubular valve closure member 14 and its co-operating seating surfaces are so designed that the rate of change of the area of the flow passage 11 for the returning fluid remains constant over the whole range of movement whereas the rate of change of the area of the flow passage 9 for the boiler fluid increases at at least one position in the range of movement as this passage is increasing in area.
Patent GB-356609-A (GB)
Title: Improvements relating to the manufacture of diacetone alcohol
IPC: C07C45/72
Filed: 1930-12-30
Abstract: Diacetone alcohol is obtained by condensing acetone by means of an alkali in alcoholic solution, the quantity of alkali used being such as to give a reaction with cresol red but not with o-cresolphthalein. Caustic potash dissolved in the minimum quantity of alcohol is preferably used as the condensing agent. According to an example an alcoholic solution of caustic potash is added in small amounts while agitating and cooling to pure acetone, and the liquid allowed to stand for 2 hours.  The alkalinity is then neutralized by adding an alcoholic or acetone solution of a substance such as sulphuric or phosphoric acid capable of forming with the potash a salt insoluble in acetone. The precipitate is filtered off, and the diacetone alcohol separated by distillation.
Patent GB-999195-A (GB)
Title: An improved method and device for checking the regularity of a wire, thread or filament
IPC: G01N33/36
Filed: 1963-10-07
Abstract: 999,195. Checking regularity of filaments. COMPAGNIE GENERALE D'ELECTRICITE. Oct. 7, 1963 [Oct. 16, 1962], No. 39339/63. Headings G1M and G1S. The dimensions of a filament, wire or thread G which may be of oval cross section are determined by imparting a predetermined twist to the filament G before passing it through a measuring device D so that it presents its large and small diameters alternately to the device D. The graph 1, Fig. 1, produced by device D shows the ovality of the filament and variations in section are given by the median curve 2. The filament G is unwound from a bobbin A on a frame B which rotates about an axis XV to impart a twist to the filament. On leaving device D the filament is taken up on a drawing capstan E and wound onto a friction controlled bobbin F. Device D is preferably a non- contacting measuring device.
Patent GB-1189246-A (GB)
Title: Series Capacitor Installation for an Alternating Current Line
IPC: H02H6/00
Filed: 1968-08-19
Abstract: 1,189,246. Protective arrangements. WESTINGHOUSE ELECTRIC CORP. 19 Aug., 1968, [25. Sept.,. 1967], No. 39484/68. Heading H2K. An arrangement for protecting electrical apparatus; e.g: series capacitors 16, 17, cornprises a device 24 energized by a current corresponding: to: the current through theapparatus and: simulating the temperature of the apparatus to effect the closure of a by-pass switch 20 when that temperature reaches a predetermined level. The device 24 may comprise a sealed container,an. insulating tube within the container, a heater wire on the tube and a temperatura.sensing bulb: within the tube. The. container and tube are filled with silica sand and oil and the bulb is connected by capillary tube 31 to a pressure-operated switch- 30, 32. The heater wire, an instantaneous relay 23 and an induction relay 22 are connected in series to a current transformer 25 and control the operation of a light 35 and a light responsive relay device 36 having contacts 37, which when closed, complete a circuit for the trip coil 39 of the by-pass switch 20. The light 35 and the device 36 are at high potential and are optically connected by light conducting rods 52, 51 to a light-sensitive relay device 48 and a light 47 at earth potential. This permits the simultaneous operation of by-pass switches connected across capacitors in other phases and in parallel circuits, the respective devices 48 being electrically connected in parallel across a source 55 and controlling common contacts 49 in series with the respective lights 47 which are connected in parallel with one another.
Patent GB-1182450-A (GB)
Title: Process for the Manufacture of Amino Acids and Peptides and the Derivatives Thereof
IPC: C07K1/02
Filed: 1967-08-29
Abstract: 1,182,450. Process for amino acids and peptides. FARBWERKE HOECHST A.G. 29 Aug., 1967 [27 Aug., 1966; 10 Feb., 1967], No. 39507/67. Heading C2C. In a process for preparing amino acids and polypeptides, an amino acid or polypeptide containing N-formyl groups or derivatives thereof, with the exception of esters with primary or secondary alcohols, are reacted with an at least equimolar amount of a compound R-NH-R<SP>1</SP> in which R is H, alkyl, optionally substituted aralkyl or aryl, alkanoyl, aroyl, alkyl or aralkyl-oxycarbonyl, carbamoyl or thiocarbamoyl or amidino, and R<SP>1</SP> is amino, or (when R is alkyl or aryl), alkylamino or arylamino, or (when R is H), OH or alkoxy or phenyl optionally substituted by alkyl, OH, alkoxy, amino and halogen and when R is H, alkyl or aralkyl and R<SP>1</SP> is amino or alkylamino the reaction is carried out in the presence of a weak organic acid. The following intermediates are prepared: BOC - Sa - Tyr - Sa - Met - Glu(OtBu) - - His - Phe - Arg - Try - Gly - Lys(For) - Pro - Val - Gly - Lys(For) - Lys(For) - Arg - Arg - Pro - Val - Lys (For)- Val-Tyr NH 2  (from the decapeptide and the tridecapeptide); H - Tyr - Ser - Met - Glu(OtBu)- His - Phe - Arg - Try - Gly - OH (from the BOC-blocked peptide) and For-Tyr-Ser-Met- Glu(OtBu) - His - Phe - Arg - Try - Gly - OH; Ac - Ser - Tyr - Ser - Met - Glu(OtBu) - His - Phe - Arg - Try - Gly - Lys(For) - Pro - Val - NH 2  (from the decapeptide and the tripeptide) and Ac - Ser - Tyr - Ser - Met - Glu(OH) - His- Phe - Arg - Try - Gly - Lys(For) - Pro - Val-NH 2  and BOC - D - Ser - Tyr - Ser - Met - Glu(OtBu)- His-Phe-Arg-Try-Gly-OH.
Patent GB-1509593-A (GB)
Title: Antiskid braking system
IPC: B60T13/12
Filed: 1975-09-26
Abstract: 1509593 Antiskid braking systems SOC ANON DBA 26 Sept 1975 [4 Oct 1974] 39566/75 Heading F2F An antiskid braking system comprises dual brake circuits supplied from tandem master cylinder 10, the first circuit including front actuator 22 and rear actuator 20, and the second including front actuator 30 and rear actuator 32. Sensors 42 and 44 output wheel speed signals from rear wheels 24 and 36 to an electronic control device 46 which detects a risk of skidding and instructs modulating device 26 to reduce brake pressing in rear actuator 20. The pressure in actuator 20 is communicated to chamber 102 and that in actuator 18 to chamber 104 such that the pressure differential across a piston 106 caused by the pressure reduction in rear actuator 20 results in the movement of piston 106 to the right as shown in the Figure, a rod 120 also causing corresponding movement of a further piston 56, whose cross-sectional area is equal to that of piston 106, to the right such that valve member 86 is removed from its seat to allow brake pressure to drain from rear actuator 32 to master cylinder reservoir 12 while valve member 84 is engaged on its seat to interrupt supply to actuator 32 from master cylinder 10. Upon cessation of skidding, restoration of normal brake pressure in actuator 20 allows spring 92 to return both pistons 56 and 106 to their initial positions as shown in the drawings. As the areas of pistons 56 and 106 are equal the pressure in actuator 32 is maintained equal to that in actuator 20.
Patent GB-1272801-A (GB)
Title: Heavy duty bags and a method for manufacturing the same
Inventor: SATO WASUKE
IPC: B29C53/50
Filed: 1969-08-08
Abstract: 1,272,801. Making bags. SHOWA DENKO K.K. 8 Aug., 1969 [9 Aug., 1968; 20 Dec., 1968 (2); 11 April, 1969 (3)], No. 39833/69. Heading B5D. [Also in Division F2] A heavy duty bag is formed by spirally winding stretched tapes of synthetic resin in opposite directions to form a cylindrical body, bonding together the superposed portions of the intersecting tapes and sealing an end of the body to form the bag. The tapes may be of polyethylene or polypropylene, or of a foamed synthetic resin, or may be a high crystallinity thermoplastic plastic synthetic resin. If a powder-proof bag is required one or both sides of the tape network is coated with a film of polyethylene, polpropylene, or polyvinyl chloride. Alternatively, the edges of the tapes may overlap. The tapes may be bonded by an adhesive or by heat sealing. In other embodiments the tapes may be reinforced by cotton or hemp yarns, or hydrophilic tapes may be laid in the interspaces between the synthetic resin tapes so that the moisture content of the bag can be controlled. If the yarn reinforcement is on the outside of the bag a non-slip surface is formed. The tapes can be coloured. The bag may be made initially a tube with one set of helical windings, Fig. 27, and turned over about the line 85 to form the bag shown in Fig. 28. This bag can be made so that the windings are on the outside. Making bags.-In one embodiment, Fig. 1, a roll 2 is covered with a film 1 and tape 6 from a bobbin 5 is helically wound thereon as the bobbin is traversed by a conveyer 11, on reversal of the traverse the superposed layer of tape is laid upon the first layer. A glue roll 7 supplies adhesive and can be raised to apply glue intermittently corresponding to the positions of the tape intersections. In another embodiment, Fig. 5, the tape layers are applied by two sets of counter-rotating bobbins mounted on driven members 19, 20. Four belts 17 moving upwardly provide a continuous former around which the tapes are laid. The belts may be of thin stainless steel, fabric, or card reinforced rubber or these materials may be combined. Press rolls 36 ensure bonding. If an inner film, is required it may be formed of two sheets 62, 63 wrapped around the belts and sealed at their overlapping edges. Alternatively, a single sheet or a helically wound sheet may be used. Constructions (Figs. 25, 26, not shown) using tapes of double layer can be used, one layer being a high crystallinity resin and the other a thermoplastic resin of lower softening print.
Patent GB-975094-A (GB)
Title: Improvements relating to motor vehicle brakes
IPC: F16D55/14
Filed: 1961-11-08
Abstract: 975,094. Disc brakes. MASSEY-FERGUSON Inc. Nov. 8, 1961 [Nov. 25, 1960], No. 39922/61. Heading F2E. [Also in Division B7] Motor vehicle brakes applied to a power-rotated axle 11 and enclosed in a housing consist of stationary abutments 21, 22, non- rotary pressers 31, 32, brake discs 41, 42 connected to the axle 11, and non-rotary brake elements 61-64 between the brake discs and the abutments and pressers, the pressers 31, 32 being axially displaceable by means 55, 60 for applying the brake elements to the discs. The axle housing has an opening 65 giving access to the brake assembly and the brake elements 61-64 are carried by the housing and are formed with gaps 70 wide enough to allow the brake elements to be withdrawn past the axle by way of the opening 65. As shown, the axle housing is joined by bolts 16 to the differential closure plate 14, and has a cover plate 66 for the opening 65 to which are keyed the brake elements 61-64. The latter are suspended from axially slidable transverse carriers 71-74 which have outwardly projecting ears registering with grooves 75, 76. The brake elements, which include a backing plate of sheet steel or equivalent with a coextensive lining 61a-64a securely bonded thereto, are fixed to the carriers 71-74 by rivets 77. The annular pressers 31, 32 are biased together by short coil springs 36 and are provided with equispaced pairs of recesses which have oppositely inclined cam surfaces so that each ball 35 tends to ride up these surfaces when the plates are rotated to cause the pressers to axially separate. The pressers are supported by spaced inwardly extending lugs 37 and stop lugs 38 on the pressers engage the latter to prevent rotation. The pressers 31, 32 have lugs 51, 52 which are joined to toggle links 53, 54. The latter are jointed to a pull rod 55 which extends into engagement with an arm 56 pivoted at 57. A bellcrank lever 60 biased by a spring 59 and pivoted at 58 may be coupled to the brake pedal or a servomotor.
Patent GB-1421802-A (GB)
Title: Transporting hydrocarbon mixtures as a slurry
IPC: B65G53/30
Filed: 1973-08-24
Abstract: 1421802 Transporting hydrocarbon oils MARATHON OIL CO 24 Aug 1973 [18 Sept 1972] 40229/73 Addition to 1421803 Heading C5E A process for converting hydrocarbon mixtures into a slurry which is transportable in pipelines and tanks comprises (1) fractionating the mixture into a relatively low pour point fraction and a relatively high pour point fraction; (2) introducing the relatively high pour point fraction into the bottom of a tower through which a continuous stream of water, which enters the top portion of the tower at at least 5 F. below the congelation temperature of the relatively high pour point fraction, flows in countercurrent; (3) imparting sufficient turbulence to the high pour point fraction to disperse it in the water within the tower and maintaining contact between the disperse particles and the water to congeal the particles; (4) introducing the relatively low pour point fraction into the top of the tower to form an interface on top of the water in the tower and permitting the congealed particles to rise to this interface; and (5) withdrawing a slurry of congealed particles in the low pour point fraction from the tower. Fig. 2 (not shown) illustrates a process in which the relatively high pour point fraction is dispersed in hot water and the mixture introduced into the bottom of the tower.
Patent GB-1423508-A (GB)
Title: Telephone instruments method and apparatus for testing an object
IPC: H04M1/02
Filed: 1972-08-30
Abstract: 1423508 Sets GTE INTERNATIONAL Inc 13 July 1973 [30 Aug 1972] 40266/72 Heading H4J A telephone instrument includes a skeletal chassis 1 (Fig. 1) shaped to engage the internal surface of a cover 11 (Fig. 2), the latter being a thin shell supported by the chassis 1. This permits the cover 11 to be readily exchanged for a new one to enable refurbishing and/or colour change. A socket 2 receives a plug-in dialling mechanism (not shown). It has a force fitting ring 3 provided with terminals 4 which cooperate with corresponding contacts at the periphery of the dialling mechanism. A socket 9 receives a plug (not shown) of a telephone handset which may house the complete transmission circuit including the transformer. This enables a simple two wire cord to be used as well as providing for easy exchange of the transmission circuits. The chassis 1 is of moulded plastics material and within its hollow interior are a terminal block 5, a ringer 6, a capacitor 7 and a hook switch sub-assembly 8 (all shown diagrammatically). Integrated circuits, amplifier and switching apparatus for intercomm. systems may be within the chassis 1. The components are mounted to the internal surface of the chassis 1 and adjacent each component is an opening through which terminals (e.g. 6a, 7a) extend. These terminals, together with the terminals 4, are interconnected by wiring extending in grooves la in the external surface of the chassis 1. The terminals 4, 6a, 7a are bifurcated and are all below the outline of the chassis 1, as is the wiring. The wires are of bare tinned copper. Where wires located on the surface of the chassis 1 cross pillars formed integrally with the chassis 1 (see Figs. 3, 4, not shown) maintain them out of contact with one another.
Patent GB-826534-A (GB)
Title: Compositions containing polyepoxide and polyaminodiphenyl sulphones
IPC: C08G59/32
Filed: 1957-12-30
Abstract: Polyglycidylethers of alpha, alpha, omega, omega tetrakis-(hydroxyaryl) alkanes having an epoxy valve of at least 0.45 eqs./100 gms. (see Specification 774,663), are heat cured in presence of a polyaminodiphenyl sulphone.  Tetraphenols specified are 1,1,2,2-tetrakis - (hydroxyphenyl) ethane 1,1,3,3 - tetrakis-(hydroxyphenyl) propane 1,1,5,5 - tetrakis-(hydroxyphenyl) propane.  Sulphones specified are 4,41-, 3,41-, 2,3-diaminodiphenyl sulphones or a mixture of isomeric diphenylsulphones.  Suitable solvents are acetone, methyl ethylmethyl isobutyl-ketone and iso-phorone; ethyl, butyl "Cellosolve" (Registered Trade Mark), ethylene glycol acetates; glycol ethers; chlorinated hydrocarbons; tetraohydrofuran which may be mixed with aromatic hydrocarbons and/or alcohols.  Liquid monoepoxy compounds may also be used, e.g. glycidyl allyl ether, glycidyl phenyl ether, styrene oxide; or cyano-substituted hydrocarbons, e.g. aceto-propio-, adipo-, and benzo-nitriles; 0.25-1.25 equivalents of polyamine are used per epoxide group.  The action of the sulphones may be accelerated by addition of boron fluoride complexes.  Curing temperatures of 100-200 C. are suitable.  The compositions are particularly useful as adhesives.  Polyvinyl acetals may be added and the mixture used to impregnate glass cloth &c. fabrics which are then used as bonding tape for laminating metals.  The compositions are also useful for potting or casting.
Patent GB-1530116-A (GB)
Title: Hot air blower
IPC: F04D29/26
Filed: 1975-10-02
Abstract: 1530116 Mounting fan rotors on shafts LICENTIA PATENT VERWALTUNGS GmbH 2 Oct 1975 [2 Oct 1974] 40387/75 Heading F2U An air blower rotor 4 is detachably mounted on the drive shaft 2 of an electric motor 1, the rotor having a sleeve 6, conical centring device 8, and means 5, 11, ensuring that the rotor may only be fitted to the shaft in one angular position relative thereto. In the Fig, the means comprises pin 5 through the drive shaft and slot 11 in the sleeve 6, which sleeve may be cut at an angle 10 to assist location of pin and slot. A drive collar 7 and milled nut 9 may be provided.
Patent GB-1031449-A (GB)
Title: Improvements in or relating to semiconductor elements
IPC: H01L27/082
Filed: 1964-10-07
Abstract: 1,031,449. Semi-conductor devices. STATNI VYZKUMNY USTAV SILNOPROUDE ELECTROTECHNIKY BECHOVICE. Oct. 7, 1964 [Oct. 7, 1963], No. 40883/64. Heading H1K. The circuit shown in Fig. 1 is embodied in a single semi-conductor device, a plan view of which is shown in Fig. 5. The device has a disc-shaped layer of one conductivity type to which the common collector content 3450 of the two transistors is made. Upon this layer is a layer 3600 of the opposite conductivity type. This layer forms the base regions of both transistors. Diffused into the surface of the base layer are the two emitter regions 2100, 1100. The comb-shaped emitter region 2100 is provided with a similarly shaped electrode 2150 of slightly smaller area. The base electrode of the first transistor is formed by a strip 1350 which contacts the base layer 3600 along a line parallel to the associated emitter 1100. The remaining electrode 1150 is combshaped and makes contact to both the emitter region 1100 of the first transistor and to the area of layer 3600 serving as the base of the second transistor.
Patent GB-966862-A (GB)
Title: Circular street manhole cover
IPC: E02D29/14
Filed: 1960-12-01
Abstract: 966,862. Manhole covers. L. B. LINDH. Dec. 1, 1960 [Dec. 14, 1959], No. 41329/60. Heading E1G. A circular manhole cover 1 with a plane upper face 4 and a concave lower face 5 carries intersecting flanges 2, 3 the height of which decreases outwardly from the point of intersection, the flanges having fan shaped extensions 10 at each end. The flange 3 terminates inside a rim 6 by which the cover is supported on a frame 9. The flange 2 extends below part of the rim 6 and has a horizontal slot 11 at each end in which engages a flange 8 on the frame 9, cut outs 14 accommodating the part 15 of the flange 2. Adjacent one side of the cutouts 14 the flange 8 gradually thickens so that when the cover is turned the slot 11 forms a friction fit with the flange 8. When the cover is turned to release it, an abutment 13 stops the cover with the flanges 2 opposite the cutouts 14.