baber/WOPTO huggingface dataset:
Patent GB-1149170-A (GB)
Title: Polymeric laminates
IPC: C08L53/02
Filed: 1966-09-22
Abstract: 1,149,170. Polymeric laminate. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 22 Sept., 1966 [24 Sept., 1965], No. 42360/66. Heading B5N. [Also in Division B2] A polymeric laminate comprises two or more alternating layers (a) and (b) tightly adhered together, in which each layer (a) comprises a normally solid polyolefin and each layer (b) comprises a block copolymer of general formula A-B-A in which each A is an independently selected polymer block of a monovinyl aromatic hydrocarbon, the said polymer block A having an average molecular weight of between 8000 and 45,000, and B is a polymer block of a conjugated diene hydrocarbon, the said polymer block B having an average molecular weight of between 35,000 and 150,000, the total polymer block A content being less than 38% by weight of the block copolymer and for each 100 parts by weight of said copolymer block 20 to 100 parts by weight of a polymer of at least one olefine having 2 to 3 carbon atoms per molecule. Specified polyolefines are polyethylene and polypropylene. Specified monovinyl aromatic monomers are styrene, vinyl toluene and vinyl xylene. Specified olefine polymers are polyethylene, polypropylene and copolymers of ethylene with vinyl acetate. The block copolymer or composition thereof may be applied to the polyolefine as a coating or as a preformed layer.
Patent GB-1394390-A (GB)
Title: Polycyclic dyes
IPC: G03G5/06
Filed: 1972-09-12
Abstract: 1394390 Polycyclic dyes MINNESOTA MINING & MFG CO 12 Sept 1972 [13 Sept 1971] 42381/72 Heading C4P [Also in Division G2] The invention comprises polycyclic aromatic dyes having a chromophore molecule comprising at least two moieties in conjugate relationship (i.e. there is a system of alternating single and double bonds linking the two moieties or the two moieties are fused in peri position) each moiety comprising three linearly fused six membered aromatic rings having an OR group attached to one of the atoms of the central aromatic ring which is not common to two aromatic rings and in which R is alkyl, cycloalkyl, substituted alkyl, substituted cycloalkyl, alkenyl, alkynyl, aryl, acyl, alkaryl or aralkyl group, and at least one auxochromic group comprising an atom of A.W. at least 31 bonded to the chromophore molecule by the said atom. One of the moieties may be heterocyclic and X is Cl, Br, I, S, Hg or Se. They are prepared by reducing a vat dye in presence of a strong base and then reacting the dianion formed with a compound containing the group R, e.g. an alkyl halide, alkyl toluene sulphonate or dialkyl sulphate when R is alkyl or with 2- chlorocyclohexanone with reduction of the hetero group to give R=phenyl. When R is acyl the reduction takes place in the presence of Zn metal and an acid followed by reaction with an anhydride.
Patent GB-1007725-A (GB)
Title: Improvements in and relating to transistor-relay combinations
IPC: H03K17/14
Filed: 1963-10-29
Abstract: 1,007,725. Transistor switching circuits. F. HURTH, and H. HURTH. Oct. 29, 1963 [Jan. 8, 1963], No. 42586/63. Heading H3T. A transistor switching circuit for actuating. a relay 10 comprises a normally non-conducting transistor T1 connected in series with the relay coil and which may be rendered conducting by the application of a suitable potential to its base electrode from terminal 11 through resistor R1, and a further normally non- conducting transistor T2 connected between base and emitter electrodes of transistor T1, so that when a suitable potential is applied to the base of transistor T2 it conducts to inhibit the control exercised upon the transistor T1 by the switching voltage applied at terminal 11. In Fig. 2, the circuit is modified by the inclusion of a biasing circuit, comprising the series connection of a resistor R6 and a rectifier diode 17 to maintain emitter of transistor T1 slightly negative and so make the inhibiting action of transistor T2 more positive. The circuit may also comprise self-holding contacts 15. In Fig. 3 (not shown), transistor T1 functions as a pre-amplifier stage for driving a subsequent switching transistor connected in series with the relay coil. This subsequent transistor may be energized from an independent higher-voltage power supply, Fig. 5 (not shown).
Patent GB-1282776-A (GB)
Title: Linearizing circuit for bridge-connected transducers
IPC: G01K7/21
Filed: 1969-08-28
Abstract: 1282776 Measuring bridge circuits BELL & HOWELL CO 28 Aug 1969 [12 Sept 1968] 42768/69 Heading G1U A transducer system comprises a bridge network 10 of which the resistances of elements in arms 12, 14, 20, 22 are variable by a physical parameter to be measured, the bridge unbalance voltage output being fed to a differential amplifier 34 which feeds back a signal from one of terminals 36, 38 through a resistor 46 to an excitation input terminal 18 of the bridge to compensate for non- linearities in the response to the physical parameter of the elements. Thus if the non-linearity is of a form C, Fig.2, then resistor 46 would be connected to the negative output terminal 38 of the amplifier so as to correct to the response A. Conversely if it is of the form B then feedback is taken from the positive output terminal 36. The arms are arranged so that the elements in arms 14, 20 vary in a given sense for a given physical charge while those in arms 12, 22 vary in the opposite sense.
Patent GB-1118444-A (GB)
Title: Microporous polymer films and their preparation
IPC: C08J9/28
Filed: 1965-10-08
Abstract: Microporous polymer films are made by coating a substrate with a polymer dispersion and heating to gel the polymer and dry the film while maintaining above the film an atmosphere which is more than 90% but less than 100% saturated with the vapour of the dispersion medium.  The substrate may form part of the finished product, in which case a tie coat is first applied, or may be such, e.g. a silicone coated paper, that the resulting film can be stripped therefrom.  The dispersion medium is preferably water. Pore size may be controlled by the viscosity of the dispersion, by the addition of vapour (other than that arising from the film) and by the temperature.  Examples are given of the production of porous films from carboxylated butadiene/acrylonitrile rubber (on a cellulosic substrate impregnated with a styrene/butadiene polymer tie coat), polyvinyl acetate (on a paper substrate), neoprene (on paper), carboxylated butadiene/acrylonitrile rubber (self-supporting film) and vinyl acetate/dibutyl-maleate copolymer (on a cellulosic substrate impregnated with a styrene/butadiene tie coat). Measured pore sizes vary from 0.0125 mm. to 0.075 mm. with the pores occupying a few per cent of the surface area.  Film thicknesses specified are 1 to 5 mils.ALSO:Microporous polymer films are made by coating a substrate with a polymer dispersion and heating to gel the polymer and dry the film while maintaining above the film an atmosphere which is more than 90% but less than 100% saturated with the vapour of the dispersion medium.  The substrate may form part of the finished product, in which case a tie coat is first applied, or may be such, e.g. a silicone coated paper, that the resulting film can be stripped therefrom.  The dispersion medium is preferably water. Pore size may be controlled by the viscosity of the dispersion, by the addition of vapour (other than that arising from the film) and by the temperature.  Examples are given of the production of porous films from carboxylated butadiene/acrylonitrile rubber (on a cellulosic substrate impregnated with a styrene/butadiene polymer tie coat), polyvinyl acetate (on a paper substrate), neoprene (on paper), carboxylated butadiene/acrylonitrile rubber (self-supporting film) and vinyl acetate/dibutylmaleate copolymer (on a cellulosic substrate impregnated with a styrene/butadiene tie coat).  Measured pore sizes vary from 0.0125 mm to 0.075 mm with the pores occupying a few per cent of the surface area.  Film thicknesses specified are 1 to 5 mils.
Patent GB-1243253-A (GB)
Title: Improvements in or relating to light beam deflectors
IPC: G02F1/29
Filed: 1968-09-10
Abstract: 1,243,253. Light deflector. HONEYWELL Inc. 10 Sept., 1968 [19 Sept., 1967], No. 43067/68. Heading H4F. An analogue light beam deflector comprises a triangular electro-optic prism, e.g. a right triangular prism 10, Fig. 1, having faces 11, 12, and 13 and crystallographic mutually perpendicular X, Y and Z axes, the X and Y axes becoming axes X<SP>1</SP> and Y<SP>1</SP> (oriented as shown) when an electric field is applied along the Z axis which remains unchanged. Axes X<SP>1</SP> and Y<SP>1</SP> have different electric field dependent indices of refraction, and a light beam 14, polarized perpendicular to the Z axis and the direction of propagation and having extreme rays 14a and 14b, is deflected upon reflection from reflection means adjacent face 13, e.g. reflective coating 19, due to the different indices of refraction for the beam 14 when its direction of propagation is substantially parallel to the X<SP>1</SP> axis or the Y<SP>1</SP> axis. To increase the deflection a reflective coating is disposed on face 12 so that the light beam is reflected, and thus deflected, twice at face 13, Fig. 3 (not shown). To increase the deflection still further the prism has reflective coatings 19, 43, and 41, as shown in Fig. 4, so that the incident polarized light beam 14 is deflected twice at faces 13 and 42 of the prism. A plurality of the deflectors of Fig. 4, may be arranged in series, reflective coating 41 being included only on the last deflector in the array Fig. 5 (not shown), and two such arrays may be utilized to achieve two dimensional deflection, Fig. 6 (not shown), a half-wave plate being, positioned between the X- and Y-deflector arrays to rotate the plane of polarization of the light beam through 90 degrees. The Y-deflector array preferably comprises a stack of thin prisms with alternating Z-axis orientations, the sandwiched electrodes being transparent and possessing the same refractive index as the electro-optic crystal. Instead of using reflective coatings, the reflection means may comprise mirrors or total internal reflection when the prism is surrounded by a material with an appropriate index of refraction. The electro-optic material may comprise KDP, Potassium Dideuterium Phosphate (KD*P) or Gallium Arsenide.
Patent GB-952719-A (GB)
Title: Improvements in or relating to electrode tools for electrical machinery
IPC: B23H9/10
Filed: 1962-11-19
Abstract: An electrode tool for use in a spark-erosion or electrolytic machining operation is made by providing a model 11, Fig. 3, of the article to be machined, such as a turbine blade, but differing therefrom to allow for electrical machining parameters, depositing on the model surface 13 an electrically conductive layer 15, and stripping the layer from the model whereby the interface surface forms the cathode electrode surface 13c, Fig. 8.  The model 11 may be of wood, particularly balsa wood, plastic, ceramic plaster, metal or carbon; the layer 15 may be of nickel, chromium, nickel followed by copper or silver or silver followed by nickel, applied by vapour deposition, spraying, dipping or electro-plating.  In one example a layer of silver is applied by spraying silver nitrate and ammonia which is reduced by formaldehyde, and the silver has a further layer of nickel applied by electroplating. During application of the layer to one surface 13 of the model, the other surface 14 may be masked with a plastic material 16. Subsequently the surface 13 is masked whilst a layer is applied to the other surface 14, Fig. 4 (not shown).  A duplicate of the model may be used to receive the surface layer, Figs. 4-6 (not shown).  The layer may be removed by burning or otherwise decomposing the model.  The cathode electrode 20, Fig. 8, is formed by the layer 15 embedded in an insulated backing 21. Workpiece 19 to be machined is supported on pins 23 in a bath of electrolyte or dielectric liquid and the electrode is fed in the direction 28.  Subsequently the workpiece is reversed and a second electrode is used to form the other surface 14, Fig. 9 (not shown). <PICT:0952719/C3/1> <PICT:0952719/C3/2> <PICT:0952719/C3/3> In another embodiment, Fig. 10, an airfoil blade 11 is formed by separate electrode portions 24a, 24b, 24c, 24d fed by pistons 28a controlled by a programming means 30. Electrolyte is circulated by a pump 29.  Specification 335,003 is referred to.
Patent GB-1031245-A (GB)
Title: An installation for feeding cows
IPC: A01K5/02
Filed: 1962-11-20
Abstract: 1,031,245. Feeding appliances for cows. CLAY EQUIPMENT CORPORATION. Nov. 20, 1962 [Nov. 20, 1961], No. 43872/62. Heading A1M. A milking installation has means for feeding cows at milking periods wherein during each period feed is dispensed to a feeding position in substantially equal amounts at equal time intervals by electrically operated means, variation of the amount dispensed at each interval being effected by varying the period of operation of the electrically operated means. In each stall a plate 52 is adjustably supported below the throat 24 of a feed hopper and carries a rotary feed discharger 56 which is operated by electric motor 58 to discharge feed over the edges of the plate 52 into a feeding trough 28 via baffles 40, 46. The motors 58 of the stalls are connected in parallel and engaged at predetermined intervals for a preselected time whereby the amount of feed pushed from plate 52 is varied, the control circuit for the motor including a switch actuated by an adjustable cam arrangement. Means may be provided whereby any one motor can be energized independently so that supplementary feed can be given to selected cows. A cone 25 can be inserted in the throat of the hopper when the feed is in pellet form and a shaft carrying polyethylene rods may be mounted on the output shaft of the motor to extend into the hopper to act as an agitating device. The feed discharger may comprise arcuate spring steel blades having notched or serrated edges. The cows are milked in a herringbone stall arrangement.
Patent GB-1056896-A (GB)
Title: Marine conductor pipe and support
Inventor: GRAHAM TOM SMITH
IPC: E21B7/12
Filed: 1964-12-28
Abstract: 1,056,896. Boring earth &c. OCEAN DRILLING & EXPLORATION CO. Oct. 28, 1964 No. 43988/64. Heading E1F. A marine conductor pipe 22 having a crosspiece 21 is slidably supported by a platform 15 above the surface of the water and carried by a tubular structure 10 driven into the land bed below the water. The slenderness ratio (1/k) of the structure is 1/3 to 1/6 that of the pipe. The wellhead equipment and blow-out preventers may be mounted on the top of the pipe.
Patent GB-1300310-A (GB)
Title: Vulcanizable acrylic elastomer composition
Inventor: ERMIDIS NICHOLAS PETER
IPC: C08L7/00
Filed: 1970-09-16
Abstract: 1300310 Vulcanizable acrylic elastomer compositions AMERICAN CYANAMID CO 16 Sept 1970 [29 Oct 1969] 44299/70 Heading C3P Vulcanizable compositions comprise an acrylic elastomer containing halogen and/or epoxy groups, trithiocyanuric acid and a dithiocarbamic acid derivative. As the dithiocarbamic acid derivative can be used a thiuram sulphide of formula wherein R and R<SP>1</SP> are alkyl, aralkyl, cycloalkyl or are joined to form a heterocyclic ring, and n is an integer from 1 to 6, or a metal dithiocarbamate wherein the metal maybe Zn, Cu, Cd, Pb, Bi, Fe, Co, Mn, Te, or Se. The trithiocyanuric acid and the dithiocarbamic acid derivative may be used in amounts of from 0À25 to 5À0 parts by weight per 100 parts by weight of elastomer. The compositions may additionally contain 2,2<SP>1</SP>-dithiobis-(benzothiazole) preferably in amounts of from 0À1 to 3À0 parts by weight per 100 of elastomer. In the examples, the halogen or epoxy containing elastomers used are an ethylacrylate/ vinylchloroacetate copolymer, an ethyle acrylate/glycidyl acrylate copolymer and an ethyl acrylate/butyl acrylate/vinyl chloroacetate terpolymer, and the dithiocarbamic acid derivatives used, are Cu-, Pb-, Bi-, Cd- and Fedimethyl dithiocarbamates, Zn-dibutyl and dibenzyl carbamates, Zn-pentamethylene dithiocarbamate, Te - diethyldithiocarbamate and tetramethyl thiuran mono- and disulphides, with or without 2,2<SP>1</SP>-dithiobis-(benzothiazole).
Patent GB-1018231-A (GB)
Title: Improvements in cigarette-making machines
IPC: A24C5/31
Filed: 1962-11-26
Abstract: 1,018,231. Cigarette making machines. K. KÍRBER. Nov. 4, 1963 [Nov. 26, 1962; Oct. 31, 1963], Nos. 44587/62 and 43045/63. Heading A2C. A cigarette making machine comprises a driving unit including a driving motor 8 and a clutch 9 for operating a driven shaft 2, which is the main shaft of the machine, the driving unit being arranged to permit operation of the driven shaft at a relatively low starting speed, or, alternatively, at a higher normal working speed. The motor 8 may be variable speed motor or multiple speed motor capable of driving the shaft 8a at low and high speeds or the motor may be a single speed motor connected to the shaft 8a through a gear box (Fig. 4, not shown) or through a variable speed drive (Fig. 5, not shown). As shown, the clutch 9 is a hydraulic clutch which couples the shaft 8a to a pulley 10 which transmits the drive via belts 11, 12 to a pulley 13 rigidly connected to the shaft 2, an electro-magnetically operated disc brake 14 being provided for stopping the shaft 2. Alternatively, (Fig. 3, not shown) the pulley is rigidly connected to the shaft 8a and the pulley 13 is rotatably mounted on the shaft 2. A friction clutch member is fastened to the shaft 2 and is electromagnetically operated to engage either the pulley 13 to transmit the drive to the shaft 2 or part of the machine wall 1a to stop the shaft 2.
Patent GB-1396770-A (GB)
Title: Tunnel boring
IPC: E21D11/10
Filed: 1972-09-27
Abstract: 1396770 Metallic fabric J BERNOLD 27 Sept 1972 [29 Sept 1971] 44673/72 Heading D1K [Also in Division E1] A mat on which concrete is sprayed to form a tunnel lining comprises rods 3, 4 and reinforcing members 5. The members 5 are welded to rods 3 but not to rods 11, 12 to permit overlap between adjacent mats with one member 5 slid within the other 5'. The members 5 and the rods 4 are curved so that the members 5 engaged the tunnel wall.
Patent GB-1102529-A (GB)
Title: Glassy films
Inventor: BUSH ERIC LANGLEY
IPC: C23C8/28
Filed: 1966-10-07
Abstract: <PICT:1102529/C6-C7/1> In a process of forming a metal phosphate coating on a metal or oxide surface e.g. Cu, the surface is reacted at a high temperature with the vapour of phosphorus pentoxide which at least in the case of the metal surface is mixed with oxygen. The metal surface such as Cu is preferably a coating on an inert metal i.e. one which does not react with oxygen or phosphorus pentoxide vapour, such as the noble metals particularly Pt.  Furthermore the inert metal may itself be a layer on an insulating substrate.  In the preferred method shown in Fig. 1, a silica reaction tube contains the phosphorus pentoxide in a silica boat and the substrate located downstream.  A movable furnace surrounds the reaction tube which is connected to a vacuum pump at one end and a supply of oxygen at the other.  A radio frequency power supply is also connected to the tube to supplement the thermal energy supplied by the furnace.  The tube is evacuated, flushed with oxygen to give a pressure of 0.6 torr. The substrate is heated by the furnace, the radio frequency power is applied and the substrate is oxidized. The furnace is then moved to heat and vaporize the phosphorus pentoxide which condenses on the substrate and forms a copper phosphate coating.
Patent GB-1441986-A (GB)
Title: Process for the accelerated alcoholysis of ehtylenevinyl ester interpolymers in the solid phase
IPC: C08F8/00
Filed: 1972-09-25
Abstract: 1441986 Alcoholysis of ethylene/vinyl ester copolymers NATIONAL DISTILLERS & CHEMICAL CORP 25 Sept 1973 [25 Sept 1972] 44902/73 Heading C3P Alcoholysis of ethylene/vinyl ester copolymers, especially ethylene/vinyl acetate copolymers, is effected in the solid phase in a reaction medium containing (1) a C 1-4  monohydric alcohol, e.g. methanol, (2) an alkaline or acidic catalyst, e.g. sodium methoxide, (3) an aprotic dipolar solvent, e.g. dimethyl formamide, dimethyl sulphoxide or tetrahydrothiophene-1,1-dioxide, and optionally, and preferably, (4) a hydrocarbon solvent, e.g. toluene. In examples, the copolymer is in the form of film, sheeting, pellets or powder.
Patent GB-1438109-A (GB)
Title: Method and apparatus for measuring articles
IPC: G01B7/02
Filed: 1972-09-28
Abstract: 1438109 Measuring bearings electrically ASSOCIATED ENG Ltd 27 Sept 1973 [28 Sept 1972] 44916/72 Headings G1M and GIN Apparatus for measuring the peripheral length y of a shell half bearing 10 comprises a flat plate 11, a plurality of radially disposed transducers 14, each having a probe 15 which bears against a spring foot 16 to press it against the bearing, and each producing an electrical signal representing displacement of the probe 15. The signals are combined according to an empirical low of the general form y=a o  Œ a, x 1  Œ a n x n  Œ d m x n  Œ a p x n x m , where x is the radius of the bearing as measured by the transducers, and the coefficients a are determined from measurements taken on a setting-up batch of the bearing shells including measurements of y. A computer is then programmed to use this empirical relationship and the signals from the transducers 14 to determine the peripheral length y for each of a plurality of shells slid along the plate in the direction of the arrow. When the locating projection 12 on the leading bearing operates a triggering micro-switch it stops the feed drive. It is  stated that the transducers may be differential transformers, capacitive or electro-optical.
Patent GB-1023620-A (GB)
Title: Improvements in or relating to a column for heat and/or mass exchange
IPC: B01D3/18
Filed: 1964-11-04
Abstract: 1,023,620. Column heat exchangers. O. MONTZ. Nov. 4, 1964 [Nov. 7, 1963], No. 45011/64. Heading B1R. A plate column heat/mass exchanger comprises a hollow vertical column K containing spaced apart horizontally arranged trays B, made of resilient material e.g. copper, steel, plastics, whose peripheries comprise a plurality of closely spaced radially downwardly curved tongues 2 separated by slits 1 which bear against the wall of the column thereby supporting the trays by friction ; ascending gas or vapour in the column forces its way up between the slits and holds the downwardly flowing liquid on the tray at a height of a few millimetres, while liquid constantly flows from one tray to another as a thin film down the inner wall of the column. Radial slots 3 may be provided in an annular region of the trays through which no liquid passes but ascending gas or vapour passing through then is set in rotational motion and sets up turbulence in the liquid on the tray. Trays may be joined by thin wires 5 to facilitate extraction of the trays from the columns. A plurality of columns may be arranged in an outer shell and the outer walls of the columns heated or cooled.
Patent GB-1445004-A (GB)
Title: Exhaust fitments for pneumatic tools
IPC: F01N13/00
Filed: 1973-09-27
Abstract: 1445004 Silencing gaseous flow ROBERT BOSCH GmbH 27 Sept 1973 [28 Sept 1972] 45205/73 Heading F1B A silencer 10 for a pneumatic tool, e.g. a grinder, comprises a cover 11 for exhaust openings 9 in the tool body 1 which defines a flow-path to discharge openings 19 in the cover. The flow-path may be defined by parallel channels 14 and 15 in a soft rubber moulded strip 18 which is glued to a sheetmetal strip having end flanges 12 connected by screws 13. The cover 11 may be formed entirely of soft or foam plastics material or only those surfaces of the cover which engage the body 1 may be provided by a resilient material. The arrangement of channels (21, 22), Fig. 4 (not shown), in the cover 11 may differ in dependence upon the tool to be silenced.