baber/WOPTO huggingface dataset:
Patent GB-1528788-A (GB)
Title: Solventless release coating
IPC: B05D7/24
Filed: 1975-12-16
Abstract: 1528788 Solventless silicone release coating GENERAL ELECTRIC CO 16 Dec 1975 18 Dec 1974] 51419/75 Heading C3T [Also in Division B2] A method for coating a substrate, particularly for the production of a release "paper", comprises applying to the substrate an amount of from 0À1 to 4À0 lbs./3000 ft.<SP>2</SP>, of a silicone composition which is solvent-free and which comprises: (a) a vinyl chain-stopped polysiloxane of the formula  wherein R and R<SP>1</SP> are monovalent hydrocarbon radicals free of aliphatic unsaturation with at least 50 mole per cent of the R groups being methyl and n has a value sufficient to provide a fluid material having a viscosity of from 200- 5000 cp at 25‹ C.; (b) a platinum catalyst; and (c) an amount of a liquid organohydrogenpolysiloxane of the formula sufficient to provide from 0À5 to 1À0 siliconbonded hydrogen atoms per silicon-bonded vinyl group ,wherein a is 1À0 to 2À1, b is 0À1 to 1À0, a+b is 2À0 to 2À67, there being at least 2 silicon bonded hydrogen atoms per molecule component (c) generally having a viscosity of from 10 to 10,000 cps at 25‹ C.; and optionally (d) an adhesion promoter, e.g. a tetraalkyl titanate, and optionally (e) a cure inhibitor, e.g. vinyl acetate, alkenyl substituted isocyanurates, ethylacetoacetate, dimethylformamide or N-allylmethylcarbonate, application of said silicone composition to the substrate being effected with an offset gravure coating apparatus having a gravure roll and an applicator roll, the substrate being run at a higher speed than the gravure roll, and thereafter heating the coated substrate, generally at a temperature of 150-650‹ F., to cure the silicone composition. Preferably all of the R and R<SP>1</SP> groups are methyl. The substrate may be paper or synthetic films. The gravure roll and applicator roll may be in the same horizontal plane or in the same vertical plane. The substrate may be run at the same speed or at a higher speed than the applicator roll. The silicone compositions generally comprise 80-100 pbw. of component (a) and 5-15 pbw of component (c). Suitable Pt catalysts are chloroplatinic acid compounds as solutions in alcohols, water, glycols, esters or ethers; platinum-hydrocarbon complexes, platinum alcoholate complexes and platinum-vinyl siloxane complexes. The cured silicone coated surface may be laminated to a face stock substrate that has been coated with adhesive or the adhesive may be coated over the cured silicone coated surface and then laminated to the face stock substrate.
Patent GB-1202253-A (GB)
Title: All electronic vhf tuner
IPC: H03J3/00
Filed: 1967-11-14
Abstract: 1,202,253. PIN diodes. TEXAS INSTRUMENTS Inc. 14 Nov., 1967 [30 Dec., 1966], No. 51695/67. Heading H1K. [Also in Division H3] A PIN diode comprises a substrate 162 of Si or GaAs with shallow heavily doped P-regions 163, 164, 165 of boron diffused to 10<SP>19</SP> atoms/cc. and shallow heavily doped N-regions of phosphorus diffused to 10<SP>20</SP> atoms/cc. Contact is made with the doped regions by metallized fingers (176, 180 in Fig. 3, not shown) which pass through openings in the oxide insulating layer 178. These fingers are vapour deposited and subsequently patterned. They may be a laminate of gold overlying a thin film of a metal having a high eutectic temperature with Si, e.g. Mo, V, Pt, Ni or W. The diodes are used as switching elements in VHF tuners (see Division H3).
Patent GB-1487250-A (GB)
Title: Gas turbine engine fuel supply control
IPC: F02C7/26
Filed: 1974-11-28
Abstract: 1487250 Automatic control of speed of gas turbines NISSAN MOTOR CO Ltd 28 Nov 1974 [28 Nov 1973] 51955/76 Divided out of 1487249 Heading G3R A gas turbine fuel supply control system includes an electromagnetically operated fuel control valve responsive to first and second control signals fed thereto in sequence from first and second signal generating means respectively via a control changing means which operates to disconnect the first signal generating means and connect the second signal generating means to the control valve when the magnitudes of the first and  second control signals become equal. In the arrangement shown comparator 66 is supplied with the output of signal generating means 70 and the output resulting from taking the difference between an actual speed signal from sensor 40 and the output of signal generating means 60. When the output of amplifier 64 equal the output from the generating means 70 the comparator causes switch 68 to change over control to the contact B where it remains until the engine is next started. In operation the generator 70 initially supplies the controlling signal because the speed is low and thus the output of amplifier 64 is high. As the speed of the turbine increases the output of amplifier 64  decreases until it equals the signal from generator 70 when the control is smoothly transferred so that the turbine speed is controlled by the output signal of generating means 60. In a modification, Fig. 2 (not shown), the signal generating means 70 is replaced by an arrangement similar to that shown in Specification 1487249 to provide a gradually increasing signal at terminal A of the switching means 68. A shut-off valve also is provided in the fuel flow line.
Patent GB-1057590-A (GB)
Title: Method of producing fuel gas
IPC: C10L3/00
Filed: 1964-12-31
Abstract: A method of producing a fuel gas, e.g. of the kind described in Specification 1,024,353 consists in mixing in specified proportions an extractant which selectively dissolves a primary fuel which comprises methyl acetylene, or allene, or mixtures thereof, and which has the primary fuel dissolved therein, with a specified diluent, and distilling the mixture.  The diluent comprises two components, namely:- (a) propane or propylene or mixtures thereof, and (b) at least one hydrocarbon selected from the group comprising saturated and ethylenically unsaturated hydrocarbons containing 4 carbon atoms, the two components being present in the mole ratio of from 0.8 to 19.0 moles of (a) per mole of (b).  The diluent and the extractant are mixed in a mole ratio of from 0.33 to 1.1 moles of diluent per mole of primary fuel.  Suitable extractants are phenol, furfural, b ,b -dichloro-diethyl ether, and dimethyl formamide.  Diluent component (b) may be n-butane, isobutane, 1-butene, 2-butene, butadiene, iso-butene, and mixtures thereof.  The fuel gas obtained by distillation comprises the primary fuel and components (a) and (b), in the proportions set forth in Specification 1,024,353. Fourteen specific examples are described.
Patent GB-1319118-A (GB)
Title: Tracks for ground effect machines
IPC: B60V3/04
Filed: 1970-11-09
Abstract: 1319118 Tracks for ground effect machines SOC DE L' "AEROTRAIN" 9 Nov 1970 [15 Nov 1969] 53270/70 Heading B7L In a track, for ground effect machines, in which a central guidance rib defined by walls 2c, 2d co-operates with a longitudinal central slot 4 on the machine 1, the "lifting" effect caused by leaks from the guidance cushions 3c, 3d is obviated by providing a vent 20 through the central rib which communicates with a space 5 under the track, thus opening the slot 4 to the atmosphere. The central rib, of which the walls 2c, 2d are metal, is strengthened by the provision of diaphragms 6 having holes 7, and being linked together by struts 8 riveted to the walls. Orifices 13 are provided at the base of the walls 2c 2d to prevent excess pressure building up, at the junctions of the central rib and the machine-supporting parts of the track 2a 2b, caused by leaks from both the cushions and the support cushions 3a, 3b. Specification 1,199,420 is referred to.
Patent GB-1357889-A (GB)
Title: Fluid-pressure actuated press-tool equipment
IPC: B25B5/06
Filed: 1970-11-10
Abstract: 1357889 Riveting; jointing by stamping PLESSEY CO Ltd 28 Oct 1971 [10 Nov 1970] 53314/70 Headings B3Q and B3U [Also in Division B5] In a fluid actuated riveting tool or crimping tool for electrical connections the piston element 2 has a relief passage 5 with a relief valve 6 so that the pressure applied to the tool during its approach stroke is limited, the exit 8 to the passage 5 being blocked off during the operating stroke to enable a higher pressure to be applied. The exit may be blocked off by a cylinder end cover 7 which is adjustably mounted on cylinder 1.
Patent GB-1413740-A (GB)
Title: Method of reducing the amplitude of spurious echoes in  ultrasonic echo sounding
IPC: G01S7/523
Filed: 1973-11-19
Abstract: 1413740 Ultrasonic pulse-echo systems; piezo-electric devices F HOFFMANN-LA ROCHE & CO AG 19 Nov 1973 [27 Nov 1972] 53671/73 Headings H4D and H4J In an ultrasonic pulse-echo system using a convergent transmitted beam of generally annular cross-section, unwanted echoes from reflectors disposed laterally of the focal axis are de-emphasised by transmitting in succession at least two pulses having amplitude distributions which are respective different functions of the angle # measured about the focal axis, amplitude-weighting the resulting at least two series of echoes by respective complementary functions of #, and adding together weighted echoes associated with the same transit time. A beam formed by an annular transducer (Fig. 1) having twelve sectors is used with the Fig. 4 transmitting circuit and Fig. 5 receiving circuit. The transmitted beam has a finite or zero amplitude in selected sectors, according to the position of switches 40-43 which connect the transducer elements of sectors 1-12 to a pulse generator 34. The echoes are given a unity or zero weighting according to the setting of switches 49-52. When a first pulse is transmitted the switches 40-43 are set such that sectors 1, 2, 3, 7, 8 and 9 are operative. Simultaneously, switches 49-52 and 55 are set such that sectors 4, 5, 6, 10, 11 and 12 are operative to receive the resulting echoes, these being fed via adder 53 and rectifier 54 to a delay 56. When a second pulse is transmitted, sectors 2, 3, 4, 8, 9, 10 are energized and sectors 5, 6, 7, 11, 12, 1 receive the echoes, which are fed to a delay 57 via the adder and rectifier. A third pulse is then transmitted, from sectors 3, 4, 5, 9, 10, 11, the echoes being received in sectors 6, 7, 8, 12, 1, 2. Delays 56 and 57 are such that the echoes from the first and second pulses appear at the input to adder 58 at the same time as echoes from the third pulse. The echo sum from 58 is displayed on a CRO, 59. A simpler, eight-sector embodiment, is described (Figs. 2 and 3, not shown). The delay and adding circuits may be omitted if the CRO display is photographed, thereby summing the echoes on film. A phase-sensitive rectifying arrangement (Fig. 6 or 7, not shown) is used in place of rectifier 29 when the system is to be used for investigating complex structures. Mechanical or electronic deflection of the ultrasonic beam, and use of multi-element transducer arrays are envisaged. The Fig. 1 transducer comprises piezoelectric film elements 1-8 on an epoxy resin/ tungsten damping block 14 in an annular housing. The element active faces are inclined relative to the axis of the annulus, have vacuum-coated electrodes, and are protected by an epoxy resin layer 16 which also provides an acoustic impedance match to water.
Patent GB-1204387-A (GB)
Title: Improvements in or relating to pressure transducers for use in charging batteries
IPC: G01L9/00
Filed: 1967-11-25
Abstract: 1,204,387. Automatic voltage control. DYNAMIC INSTRUMENT CORP. Nov.25, 1967, No.53718/67. Heading G3R. [Also in Divisions G1 and H2] A battery charging system comprises a pressure sensitive transducer responsive to the pressure of the gas produced in the battery during the charging process thereby to control the charging current and hence the production of gas. The transducer 10 comprises a body portion 11 affixed to a battery 17 together with a diaphragm 22 carrying a carbon disc 24 which discs cooperate with terminals 25, 26 to form a resistor the resistance of which varies with pressure of the gas in the battery 17 on the diaphragm 22. An orifice 20 is provided to prevent damage should the gas-pressure become excessive. The charging apparatus comprises a generator 27 having a field winding 29 controlled by a regulating device 34, 44, 45, the operation of which is determined by the transducer resistive element which is connected in parallel with a resistor 36 in series with the operating coil 34 of the field regulator. Initially, with a low gas-pressure in the battery 17, the diaphragm 22 will be in its normal condition and the resistance of the transducer will be infinite. In this condition the regulator 34, 44, 45 will operate to produce maximum output from the generator 27 and thus, maximum charging current. As the gas-pressure in the battery 17 rises the resistance of the transducer gradually decreases thereby causing the regulator 34, 44, 45 to operate such that the generator 27 produces a decreasing charging current until a stable charging and gas producing process is attained. The state of charge of the battery 17 is reflected in the value of charging current required to maintain a given gas-pressure in the battery during charging. Thus an ammeter 38 may be connected in the charging circuit and calibrated in terms of the state of charge. In other embodiments the charging apparatus may comprise conventional voltage control, current control and cut-out devices or may comprise a three phase generator/ rectifier device with a control arrangement including transistors.
Patent GB-1168454-A (GB)
Title: Improvements in or relating to the manufacture of electric conductors
Inventor: SUGI MASAO
IPC: H01B13/06
Filed: 1966-12-01
Abstract: 1,168,454. Coating electrical conductors; coating apparatus. SUMITOMO ELECTRIC INDUSTRIES Ltd. 1 Dec., 1966, No. 53759/ 66. Headings B2K and B2L. A method of manufacturing a foamed plastics insulated electrical conductor comprises applying a solution of a crystalline high polymer e.g. polyethylene or polypropylene to an electrical conductor, drying to effect clouding of the coating and heating the coating to foam is characterised in that the content of solvent in the coating is reduced to at most 15% by weight before foaming. The clouding and removal of the solvent may be effected simultaneously; alternatively, removal of the solvent may be effected after clouding. In Fig. 2, a conductor W is fed from pay off 1 through solution coating tank 2, the resultant coated conductor being passed through drying duct 3 for clouding and solvent removing device 6 prior to passing through foaming device 4. The solvent removing device containing a daner assembly 5. In Fig. 3, the drying duct and solvent removing device are combined to form a dryer duct 23 where clouding and removal of solvent are effected simultaneously.
Patent GB-1058010-A (GB)
Title: Device for cleaning felt filter-pads
IPC: B01D46/00
Filed: 1965-12-20
Abstract: 1,058,010. Cleaning of -air-filters. F. ROPOHL. Dec. 20, 1965 [Jan. 20, 1965], No. 53878/65. Heading BIT. A flat, felt filter is removed from its mounting in a ventilation plant and cleaned by vibration and reverse flow of air in a closed circuit, as shown, in which a blower 6 draws air from the downward, normally upstream, face of the filter and the dist removed therefrom is collected by an elastorstaic precipitator 7. Periodically, when blower 6 is switched off, means, not shown, rinse the precipitator electrodes with water and collected dust is subsequently separated from the rinse water for disposal. The filter is clamped to a frame I, mounted on springs 11 and vibrated by variable-frequency device 13, during reverse flow. A vertically adjustable hood 4 closes the circuit with the filter in place. The duct crosssections vary to ensure a maximum flow rate, exceeding 1 m/5, through the filter and a minimum flow rate through precipitator 7. The filter being cleaned may be multi-layered and contaminated by radio active dust. The circuit may include a replaceable fine filter 10.
Patent GB-1191269-A (GB)
Title: Improvements in or relating to Twisting or Spinning Rings
IPC: D01H7/60
Filed: 1967-11-28
Abstract: 1,191,269. Spinning ring. MAREMONT CORP. 28 Nov., 1967 [11 May, 1967], No. 53974/67. Heading DID. A spinning or twisting ring comprises an annular web 24 with a flange thereon having an inwardly extending portion 26 and an outwardly extending portion 32, the inner portion 26 providing a bearing surface for the traveller. The cross-section of the traveller bearing surface has, three portions, an upper region having a centre of curvature: C 1  'and a radius R 1 , a median portion centred at C 2  and having a radius of curvature R 2  and a lower portion centred at C 3  and having a radius of curvature R 3 . The dimensions of the radii are:- R 2 <#M and preferably R 2 . = ¢M where M is the maximum vertical dimension of the inwardly extending flange portion. 2R 2 <R 3  <4R 2  and preferably R 3  = 3R 3  ¢R 2 <R 1  <5/6R 2  and preferably R 1 =2/3R 2 . The three portions of the surface are smoothly joined and to this end centre C 1  is arranged to lie in a horizontal plane passing through centre C 2 ; centre C 3  is arranged to lie on an extension of the inside surface of web 24. The upper surface of the flange is recessed to allow clearance for the yarn running about the traveller; dimensions of the recess are given. The portion of the traveller engaging the ring conforms to the shape of the bearing surface on the ring.
Patent GB-1274902-A (GB)
Title: Treatment of fluids with electric fields
Inventor: KING ARTHUR SHELLEY
IPC: B03C5/00
Filed: 1969-05-07
Abstract: 1,274,902. Treating waste water. A. S. KING. 7 May, 1969, No. 54068/70. Divided out of 1,274,901. Heading C1C. Waste water is treated with an electrostatic field in an apparatus comprising at least one pair of electrodes which are mounted spaced apart to define a treating region therebetween within which the field is concentrated, conductors to connect the electrodes across a source of electric potential to oppositely charge the electrodes and establish the field, an inlet to the treating region and insulation upon at least one of the electrodes to insulate it from the liquid being treated, the electrodes having parts disposed outside of the treating region which are devoid of charge concentrating surfaces. The electrodes may be pear-shaped in cross-section, Figs. 2 and 3 (not shown), planar, Figs. 4 and 5 (not shown), or coaxial, Figs. 6 and 7 (not shown).
Patent GB-1359545-A (GB)
Title: Wire splice and apparatus and method for making the same
IPC: H01R43/048
Filed: 1971-11-26
Abstract: 1359545 Sleeve couplings GENSTAPE Inc 26 Nov 1971 54926/71 Heading H2E [Also in Division B3] Two wires 61, 62 coated with insulating material are connected together by a conductive connector 57 which is crimped about the wires so that their insulation is disrupted and their cross-sectional area reduced, the connector having an axial channel 64 and an opposite axial channel extending with a seam. Varnishcoated copper wires may be successfully crimped with an elongation of the connector of 25, 35 and 100%. A rib 63 may be extruded on each side of the connector. The connector may be formed from ribbed stock, Fig. 11 (not shown), providing axial burrs for penetrating the insulation on the wires.
Patent GB-1143270-A (GB)
Title: Means for facilitating the actuation of the drawing cords of curtain suspension systems of the drawing cord type
Inventor: KENNEDY ANDREW MCDOUGAL
IPC: A47H11/02
Filed: 1966-12-10
Abstract: 1,143,270. Drawing curtains. SWISH PRODUCTS Ltd. 11 Dec., 1967 [10 Dec., 1966], No. 55396/66. Heading A4B. A curtain operating cord 15 has two runs engaged in passages 13, 14 defined between two parts 11, 12 of a handgrip, the two parts 11, 12 being snap-fitted together so that parallel channels in their mating faces co-operate to define the passages 13, 14 and the front part 12 having a recess 17 which houses a thumb piece 22 which is rockable to clamp one or other of the cord runs between the rear face of the thumb piece 22 and the bottom 19 of a recess 8 in the rear part 11 to move the cord 15 by raising or lowering the handgrip. Extensions of the thumb piece 22 are journalled in recesses 21 defined between the two parts 11, 12. The bottom 19 of the recess 8 and the rear face 23 of the thumb piece 22 are provided with transverse ribs. The thumb piece 22 may be spring biased to a central position in which neither run is clamped.
Patent GB-1397574-A (GB)
Title: Data transfer systems
IPC: G11B20/18
Filed: 1972-12-01
Abstract: 1397574 Pulse delay circuits INTERNATIONAL BUSINESS MACHINES CORP 1 Dec 1972 [13 Dec 1971] 55488/72 Heading H3P Variable pattern pulse trains are available at 101 in accordance with the programmed operation of delay networks 147. The pulse trains (A, B, C) are used to test data processing units such as tape transports, by observing failure patterns as the trains are progressively degraded by the delay networks. The trains are derived from data stored in a register 105 and clocked by an internal clock ICM through AND gates 116-118 and OR gates 119-121. Strobe pulses on 326-328 which clock the data into an output register 106 have their timing controlled by the delay networks 147 (details Fig. 3, not shown) in accordance with instructions which are stored in a memory 122 and which are sequentially accessed by an instruction counter 124. These stored instructions are either manually inserted (207, Fig. 2, not shown) or derived from the input register 104 via line 123 from the input signals 100, which signals are also used by the memory 122 to obtain the data for register 105 by way of emit bus 102 and gate 109 clocked by ICM. The stored instructions select appropriate delays in 147 by means of gates 137-140 and registers 128, and the sequence may be interrupted by a branch instruction by setting the instruction counter 124 to a non-sequential address via AND 125 when a comparator 126 indicates non-identity between the memory output (called FIELD C) and a quantity set up in condition counters 127 and gates 129-136. This permits a set of instructions to generate successive sets of progressively more degraded signals repeatedly using the same instruction sequence for each set. Instead of the above internally generated signals being fed to the output register 106, the input signals 100 may optionally be fed in their place, either directly via gates 110-112 clocked by an external clock ECM, and gates 119-121, or else via line 103 to the data register 105 whereby they may be subjected to some degrading by the clock signals (STROBE A, B, C) on lines 326-328.
Patent GB-1376693-A (GB)
Title: Polymerization of olefins
IPC: C08F297/08
Filed: 1972-12-01
Abstract: 1376693 Olefin polymerization NAPHTACHIMIE 1 Dec 1972 [2 Dec 1971] 55652/72 Heading C3P A solid polymer having a molecular weight of over 50,000 is obtained from one or more C 2 -C 10  α-olefins by a gas phase reaction in a fluidized bed of a prepolymer containing 500- 10,000 p.p.m. of a transition metal of Group IVA, VA or VIA, the prepolymer being formed by polymerization of propylene, optionally mixed with a lesser amount of ethylene or 1- butene, in a liquid medium in the presence of a slightly stereospecific catalyst (i.e. one forming a polymer containing 10-40% of amorphous material) formed from a compound of the transition metal and an organometallic compound of a metal of Group II or III. The amorphous component of the prepolymer is removed, by discarding the prepolymerization medium and preferably extracting the residue with additional solvent, before the main polymerization. The prepolymer is then activated by addition of fresh organometallic compound. In the examples ethylene is polymerized in the presence of a prepolymer of propylene, copolymerized in some cases with a small proportion of 1-butene or ethylene. The prepolymer is activated with (i-butyl) 3 Al or (n-octyl) 3 Al and is prepared in the presence of Et 2 AlCl and TiCl 3  or TiCl 2À75 (O-n-C 3 H 7 ) (prepared from the corresponding tetravalent compounds by reduction with Et 3 AlCl, and not modified by any subsequent heat treatment).