baber/WOPTO huggingface dataset:
Patent GB-1281372-A (GB)
Title: Projection screen
IPC: G03B21/60
Filed: 1969-09-03
Abstract: 1281372 Coated metal surfaces FUJI PHOTO FILM CO Ltd 3 Sept 1969 [4 Sept 1968] 43568/69 Heading B2E [Also in Divisions B5 C3 and G2] A reflective projection screen for cinematograph films and transparencies comprises a support having a light-reflecting metallic surface on which is coated a light scattering layer comprising a continuous transparent phase and microcapsules having cores of transparent or translucent material dispersed therein, so that incident light projected on to the screen is reflected by the surface and the reflected light is scattered by the light scattering layer. The support may comprise plates, foils, plated films or vacuum deposited films of aluminium, zinc, tin, nickel, chromium or stainless steel, gold plate, silver plate, silver mirror surfaces or silver yarn woven cloth. An aluminium plate having unidirectional fine lines formed thereon by rolling two aluminium plates in face-to-face relationship with one another and then separating them, may be used. The microcapsules may comprise a core of glass, silica, polystyrene, polyamide, polyester or vinyl resin, tricresyl phosphate, dibutyl phthalate or a silicone, having a surrounding film of gelatin, casein, albumin, collagen, gum arabic, sodium alginate, agaragar, dextran sulphate, polyvinyl methyl ether, a copolymer of ethylene and maleic anhydride, sodium polyvinyl benzene sulphonate, cellulose, polyamide, polyester, polyurethane or polyurea. The transparent continuous phase may be gelatin, polystyrene, polyvinyl acetate, a cellulose derivative or a vinylidene chloride-vinyl chloride copolymer. The light scattering layer may be dyed and may also contain finely-divided aluminium powder.
Patent GB-949326-A (GB)
Title: Elastic yarn
IPC: D02G3/32
Filed: 1960-12-20
Abstract: 949,326. Elastic yarns. UNITED STATES RUBBER CO. Dec. 20, 1960 [Dec. 22, 1959], No. 43716/60. Heading D1W. An elastic yarn comprises a low twist strand 10 formed of a multiplicity of loosely-arranged staple length fibres, an elastomeric thread 18 and a continuous strand 20 of high strength com- Heading D1G. pared to the strand 10, the strand 10 and the thread 18 being so arranged that when the thread 18 is contracted the strand 10 is loosely associated therewith and the strand 10, the thread 18 and the strand 20 being so arranged that when the thread 18 is elongated the fibres of the strand 10 are pressed against the thread 18 throughout the length of the strand 10. The strand 10 from a bobbin 11 is drafted by rolls 12,..., 17. The thread 18 from a spool 19 and the strand 20 from a cone 21 pass between the rolls 16,17 and the three components of the yarn are twisted together and advance through a pigtail guide 24, through a traveller 25 on a ring 26, and is wound on a bobbin 27. The strand 10 may be formed of cotton, nylon, polyester or polyacrylic fibres. The thread 18 may be natural or synthetic rubber e.g.polyurethanes and may be either untwisted or pre-twisted. The strand 20 may be a spun yarn, a continuous mono-filament or a continuous multifilament yarn preferably of low twist e.g.five turns per inch. Specification 879,140 is referred to.
Patent GB-1029967-A (GB)
Title: Magnetic encoders
IPC: H03M1/00
Filed: 1962-11-20
Abstract: 1,029,967. Circuits employing bi-stable magnetic elements. WESTERN ELECTRIC COInc. Nov. 20, 1962 [Nov. 21, 1961], No. 43791/62. Heading H3B. [Also in Division G4] An analogue to digital converter comprises an input winding common to a group of twistors, the discrete storage regions of each twistor being biased to a different extent. Three twistor wires 80, 81, 82 are shown in Fig. 1, each operating as described in Specification 877,731, and comprising a sense conductor 44-46 wrapped around by a helical ferromagnetic strip. The twistors have associated signal and reset windings 21, 22 and biasing sheets 110- 116 which together define localized saturable magnetic regions 10-16 in the twistor wires. From one to six biasing sheets of reducing length are used for each of the regions 10 to 16, the biasing sheets of each region being connected in series. Consequently, for a given current from a bias source 42, the bias current density of each region increases with increased number of sheets and the several regions are therefore biased to different degrees. The analogue signal from signal source 41 acts in winding 21 opposition to the bias on each region 10-16, and switches one or more of the regions, in the order 10 to 16, to the opposite magnetic state when its value exceeds the bias applied to the respective region. If the signal amplitude falls below the bias value of a region, the magnetic state is restored to its initial condition by the bias. The states of the regions are read out periodically by reset pulses applied from a pulse source 43 to winding 22, the reset pulses acting in the same sense as the bias so that switched regions are restored for the duration of each pulse to the initial state. Each time a reset pulse is applied an output pulse is induced in one or more of the sense conductors and passes to an integrator 47-49. The order of the biased regions 10-16 in the twistor wires 80, 81, 82, the number of regions in each wire, the direction of the bias in each wire and the arrangement of the signal and reset windings are such that the analogue signal amplitude is converted each time a reset signal is applied to a Gray digital code in integrators 47-49. The analogue signal may be either a varying D.C. or A.C., the A.C. signal being combined with a direct voltage to impart a unidirectional characteristic. In a modification, Fig. 5 (not shown), the biasing sheets are replaced by windings having graded numbers of turns. In a further modification, Fig. 6 (not shown), each twistor wire comprises several sense conductors which are so connected in series that a straight binary counting code is obtained.
Patent GB-938964-A (GB)
Title: Improvements in cigarette-making machines
IPC: A24C5/31
Filed: 1960-12-22
Abstract: 938,964. Continuous rod cigarette-making machines. G. F. W. POWELL, and MOLINS MACHINE CO. Ltd. Dec. 20, 1961 [Dec. 22, 1960], No. 44070/60. Class 130. Detecting apparatus for a continuous-rod cigarette-making machine having a rod heater 2 comprises a suction detector 5 adjacent a path when the cigarettes move axially in line and arranged to make a signal when cigarettes cease to pass it at the proper time, the signal causing the rod heater to move out of contact with the rod. When cigarettes cease to pass the detector 5, lack of suction in the diaphragm of a switch 10 causes contacts 10A to break. Breaking of switch 10A breaks the circuit to a relay 11 which, through contact 11D, applies current to a time delay switch 17 which, in turn, closes its contacts 17A to energize the rod heater magnet 14 and thus cause the rod heater to be raised clear of the rod. Contacts 10A are also connected in the circuit of the machine driving motor so that opening of the contacts also causes the machine to stop. Specification 875,330 is referred to.
Patent GB-1219619-A (GB)
Title: Vehicle safety apparatus
Inventor: HASS DAVID PETER
IPC: B60R21/261
Filed: 1968-09-17
Abstract: 1,219,619. Protecting guards. EATON YALE & TOWNE Inc. 17 Sept., 1968 [20 Sept., 1967], No. 44181/68. Heading B7B. A crash-restraint bag is inflated, in the event of a collision, by the rupture of a container holding compressed fluid located in the bag and the expanding fluid is mainly directed away from vehicle occupant, a small part of the fluid only being directed towards the occupant so that the occupant is not moved rapidly against the seat back-rest.
Patent GB-1186620-A (GB)
Title: Improvements in Semiconductor Controlled Rectifiers
Inventor: OTSUKA MICHIO
IPC: H01L29/00
Filed: 1967-09-28
Abstract: 1,186,620. Semi-conductor devices. TOKYO SHIBAURA ELECTRIC CO. Ltd. 28 Sept., 1967 [29 Sept., 1966], No. 44214/67. Heading H1K. The reverse breakdown voltage of a controlled rectifier is increased by deflecting the edges 20a of a PN junction 20 between a region 16 of low impurity concentration and a region 17 of high impurity concentration so that the angle #4 formed by the edges and the inclined peripheral surface 16a of the region 16 becomes acute instead of obtuse. A second PN junction 19 between the region 16 and a further region 15 of high impurity concentration also forms an acute angle #1 with the surface 16a without any deflection of its edges. The edges 20a may be deflected through a right angle, as shown, but alternative constructions are described (Figs. 5-8, not shown) in which the deflection takes the form of a smaller angle, a double bend or a curve. The angle #4 is preferably in the range 30-45 degrees.
Patent GB-1007945-A (GB)
Title: Electric heating apparatus elements for intermittent operation
IPC: H05B3/16
Filed: 1963-11-11
Abstract: 1,007,945. Embedded heating elements. A.M.F. ELECTRICA S.p.A. Nov. 11, 1963 [Nov. 29, 1962], No. 44396/63. Heading H5H. An electric heating element intended for intermittent operation comprises a rectangular ceramic plate-like former 1 on which is wound resistance wire, Figs. 1 and 2 (not shown), and which rests at its corners on the steps 7<SP>1</SP> of feet 7 forming part of a ceramic base 5 having an upstanding portion 6 merging with the steps 7<SP>1</SP>. The former 1 is secured in position by an overlay of cement 8, thus producing an element having large thermal inertia.
Patent GB-1446081-A (GB)
Title: Electronic multipliers
IPC: H03C1/00
Filed: 1973-09-22
Abstract: 1446081 Electric analogue multipliers FERANTLtd 18 Sept 1974 [22 Sept 1973] 44550/73 Heading G4G An electric analogue multipler for multiplying an A.C. signal applied at input 10 and a D.C. signal applied at input 11 comprises two channels 15, 16 to which the A.C. signal is applied and which are reconnected at a junction 17 to which input 11 can also be connected. An amplifier 22 responds to any D.C. imbalance at 17 and the output of amplifier 22 is fed back to the gate of an F.E.T. 35 effectively to change the gain of an inverting amplifier 23 in channel 15 to restore the D.C. balance of junction 17. This change in gain, however, results in A.C. imbalance at junction 17 and the net A.C. level is transmitted via amplifier 22 and its feedback capacitor 30 to give at output 12 an A.C. signal proportional to the product of the A.C. and D.C. input signals. The D.C. input signal need not be applied directly to junction 17, it can for example be applied to the input of amplifier 23 as at 46 or different signals can be applied to both points to multiply a sum or difference of D.C. signals.
Patent GB-1359727-A (GB)
Title: Organo phosphorus herbicides
IPC: C07F9/24
Filed: 1971-09-24
Abstract: 1359727 Herbicidal application of phosphorothionamidates SUMITOMO CHEMICAL CO Ltd 24 Sept 1971 [25 Sept 1970 25 Dec 1970] 44743/71 Heading A5E [Also in Division C2] Weeds are controlled by applying thereto a herbicidal composition containing as an effective ingredient a compound of formula I where R 1  is C 3-4  alkyl, R 2  is C 1-4  alkyl and n is 0, 1, 2 or 3. Compounds of formula I in which (a) n is 0, R 1  is n-butyl and R 2  is C2-4 alkyl, (b) n is 0, R 1  is i-propyl and R 2  is C 3-4  alkyl, (c) n is 0, R 1  is n-propyl or sec- or tertbutyl and R 2  is C 1-4  alkyl or (d) n is 1 to 3, R 1  is C 3-4  alkyl and R 2  is C 1-4  alkyl are said to be novel, some being claimed per se, and compositions containing them together with an inert carrier are claimed.
Patent GB-1277009-A (GB)
Title: Improved coupling station for connecting an air duct to an air port of a cargo container
Inventor: BUNTING ANTHONY
IPC: F16J15/46
Filed: 1968-10-24
Abstract: 1277009 Pipe couplings HALL-THERMOTANK INTERNATIONAL Ltd and OVERSEAS CONTAINERS Ltd 23 Oct 1969 [24 Oct 1968] 45228/68 Heading F2G A coupling station for supplying air to ducts in a cargo container comprises a frame supporting one or more open ended air supply coupling members 3, Fig. 2, mounted on the frame and expansible in the direction of the arrow A by means of pneumatic, &c., cylinder assemblies 5 and a closure plate 6 movable by pneumatic, &c., means between an open position in which the plate lies to one side of the coupling members, and a closed position in which the plate lies in front of the members, the plane of the plate 6 lying between the retracted position (shown in dotted lines) and the extended position of the members. When the members 3 are extended, actuation of an operating switch first causes the members 3 to be retracted, the plate 6 then moves until it lies in front of the members, and the members then extend so that they seal against the plate 6. When the members are sealed off, actuation of the operating switch causes the retraction of the members, then movement of the plate to the open position and finally extension of the members forwardly of the plane of the plate 6 to form abutting joints with the air supply and return ducts. When the coupling members 2, 3 are sealed against the plate 6, Fig. 3, and the switch 9 of the control system is actuated, air from a line A operates a valve 13 to switch air from an input B to line 12 which thus actuates a valve 14, passes via valves 6d and 18 to switch a valve 16 to admit air from a supply D to the cylinder assemblies 5 to retract the coupling members 2, 3, which trips valves 2a, 3a and causes air to flow from a supply E via the valve 14 to switch a valve 15 and connect an air supply C to one end of a servo cylinder 7 to move the plate 6 to its open position. The movement of the plate 6 trips valves 6e, 6f, which moves the valve 16 back to its original position, by admitting air via valve 6e and via return valve 17, to open the cylinder assemblies 5 and enable extending springs to force the coupling members 2, 3 to fully extend themselves and engage the container. When the switch 9 is actuated in the opposite direction, air from line 13 is switched to line 11, changing the positions of valves 14, 16, the coupling members 2, 3 are retracted by air from line D reaching the cylinders 5, and when valves 2a, 3a are again tripped, air from line E switches valve 15 to move the plate 6 into its closed position, the valve 6c is tripped, and valve 16 moves to cut off air from the cylinders 5 and allow the coupling members 2, 3 to extend and re-engage the plate 6.
Patent GB-1023668-A (GB)
Title: Driving apparatus for time-piece gearing
IPC: H03B5/32
Filed: 1962-11-30
Abstract: 1,023,668. Clocks and watches. G. CEPPI. Nov. 30, 1962 [Jan. 5, 1962], No. 45329/62. Heading G3T. [Also in Division H2] Apparatus adapted for driving a timepiece through a ratchet wheel, comprises a circuit including an electromechanical oscillator or oscillating crystal forming a time base and operating at a high frequency if not less than 1000 c/s, and a fine rod one end of which is secured to the crystal whilst the other end drivingly engages the ratchet wheel. In the embodiment, two quartz crystals 1 and 2 are connected in the input and output circuits of a transistor 3, along with the battery 4 and a resistor 4b. The vibrations maintained in crystal 2 are stated to be transmitted to crystal 1 as a mechanical feedback. The fine 5 rod is glued to a strap 6 secured to the driving crystal 2 which is carried in a support 7 Fig. 3 (not shown). In a modification, a coupling transformer is inserted between the emitter-collector circuit and the crystal 2.
Patent GB-1489960-A (GB)
Title: Substituted urea phosphate ester derivatives and their use for the inhibition of stone-forming deposits in aqueous systems
IPC: C07F9/09
Filed: 1975-10-31
Abstract: 1489960 Monophosphoric acid esters of hydroxyalkyl or hydroxyalkoxyalkyl ureas JOH A BENCKISER GmbH 31 Oct 1975 [8 Nov 1974] 45562/75 Heading C2P [Also in Divisions C1 and C7] The invention comprises mono-phosphoric acid esters of mono- or bis-hydroxyalkyl or hydroxyalkoxyalkyl ureas, and salts thereof. They may be obtained by reacting the said substituted ureas with a phosphorylation agent, e.g. phosphoric acid, polyphosphoric acid or urea phosphate, the latter being preferred. From 1 to 1À1 mole of the phosphorylation agent is generally used per mole of hydroxy groups present in the hydroxyalkyl or hydroxyalkoxyalkyl urea. The products are useful for addition to aqueous systems containing agents capable of forming scale- or stone-forming deposits so as to prevent or inhibit the formation of such deposits.
Patent GB-1419189-A (GB)
Title: Test device and method for determining water hardness
IPC: G01N31/22
Filed: 1973-09-28
Abstract: 1419189 Determining water hardness MILES LABORATORIES Inc 28 Sept 1973 [2 Oct 1972] 45608/73 Heading G1B A test device for colorimetrically determining the amount of hardness present in water comprises a carrier (particularly ash-free absorbent paper) incorporated with a test composition comprising an indicator undergoing a colour change in response to magnesium ions (e.g. Eriochrome Black T or Calmagite), an alkaline buffering agent and magnesium disodium ethylenediamine tetraacetic acid. The buffering agent preferably maintains a pH from 9À0 to 11À5 and may be tris (hydroxymethyl) amino methane. The device may further comprise a desensitizing agent, capable of binding magnesium and calcium ions so that they do not react with the indicator, such as tartaric acid, gluconic acid anhydride, sodium malonate, sodium oxalate, sodium citrate, 8-hydroxyquinoline or an aminopolycarboxylic acid salt not containing magnesium and calcium ions e.g. Na 4 EDTA. The device may further comprise a background dye e.g. tartrazine yellow. The amount of total hardness present in a water sample is tested for by contacting the water sample and the test device and comparing any apparent colour change developed in the test device with a colour chart standardized to indicate the amount of hardness present in a water sample.
Patent GB-1135133-A (GB)
Title: Insulated bus bar and method of making
IPC: H01B13/10
Filed: 1966-10-12
Abstract: 1,135,133. Electric conductors and insulation. SQUARE D CO. 12 Oct., 1966 [5 Jan., 1966], No. 45635/66. Heading H1A. A bus-bar is insulated with a polyester shell which fits around the bar with a seam parallel to the axis of the bar. As shown, the shells are formed from a plurality of webs 21, 22 and have additional insulating strips 23, 24 of vinyl or mica tape. Portions of the insulation at locations spaced along the bus-bar may be removed to provide access for plug-in type connections. In manufacture a plurality of webs are fed from storage rolls, superimposed, formed to V-shape cross-section, heated from inside, folded to their final form, heated on the outside, cooled, cut to length and punched. The insulating shells so formed can then be opened and the bus-bars inserted.
Patent GB-1031583-A (GB)
Title: A screw and sealing washer combination
IPC: F16B33/00
Filed: 1964-11-10
Abstract: 1,031,583. Screws with captive washers. M. MORSE. Nov. 10, 1964 [Nov. 26, 1963], No. 45733/64. Heading F2H. In the underface of the head 16 a screw for sealing an opening 12, e.g. in a metal plate 13, an annular recess for containing a rubber " 0 "-ring 11 presents in section an arc 21 extending over 90 to 105 degrees about its centre of curvature 22 and an arc 23 extending over 85-70 degrees about the centre 22 and whose radius of curvature is not constant but is always greater than that of the arc 21. As shown, part of the arc 23 is a straight line. A reversely curved portion 25 completes the last 5 degrees of the recess section.
Patent GB-1328674-A (GB)
Title: Manufacture of cellulose pulp
IPC: D21C3/20
Filed: 1970-09-25
Abstract: 1328674 Cellulose pulp SOC GENERALE DE BREVETS INDUSTRIELS ET CHIMIQUES SA 25 Sept 1970 [26 Sept 1969 5 Dec 1969] 45881/70 Heading D2W Cellulose pulp is made by treating wood chips with a solution of an alkali metal or alkaline earth metal salt of a phenol or primary aromatic amine in a solvent for lignin having a boiling point above 100C at a temperature above 100C, and separating the resulting pulp from the solution. Lignin may be recovered from the solution, in the form of calcium lignate by the addition of calcium hydroxide. The salt may be sodium phenate or soidum anilide. Specified solvents include glycerol, ethylene glycol, benzyl alcohol, octyl alcohol, lauryl alcohol, diphenyl, diphenyl oxide, anisole, and esters with boiling points above 100C but melting points below 100C. The wood chips may be treated either by being suspended in the solution and heated, or by being impregnated with the solution, optionally under pressure, and heated, e.g. by passage of steam through the impregnated chips.
Patent GB-1044375-A (GB)
Title: Improvements relating to electron beam parametric amplifying or frequency convertingdevices
Inventor: LUCKEN JACK AUGUSTUS
IPC: H01J25/49
Filed: 1961-12-21
Abstract: 1,044,375. Electron beam parametric amplifiers. ELECTRIC & MUSICAL INDUSTRIES Ltd. Dec. 21, 1962 [Dec.21, 1961], No. 45931/61. Heading H1D. An electron beam parametric amplifying or frequency converting device comprises means for reducing the noise on a fast wave on the beam, energy interchange means for transferring noise from a slow wave on the beam to the fast wave, and means for operating on the resultant slow wave in response to an input signal to provide amplification or frequency conversion of the input signal. The amplifier comprises an electron gun 2 in an envelope 1 enclosed in a solenoid 15 producing a longitudinal magnetic field such that the cyclotron frequency of electrons is approximately equal to the input signal frequency. The beam passes through a fast synchronous wave coupler 3 of quadrifilar helical form, an energy interchange means 4, an input signal coupler 5, a pumping means 6, and an output coupler 7, to be collected at an electrode 8. The helices of the wave coupler 3 receive RF energy of frequency corresponding to the fast synchronous wave, alternate helices receiving energy in phase quadrature relation to circularly polarize the beam. The means 6 may also be of quadrifilar helical structure.
Patent GB-1194014-A (GB)
Title: Insulation Materials
Inventor: FERNANDEZ JOHN ANTHONY
IPC: B32B15/08
Filed: 1967-10-09
Abstract: 1,194,014. Insulation board. MONSANTO CHEMICALS Ltd. 24 Sept., 1968 [9 Oct., 1967], No. 46070/67. Addition to 1,095,901. Heading B5N. An insulation board comprises a sheet of a foamed thermoplastic resin, a sheet of plasterboard and a sheet of aluminium foil. The foil is preferably situated next to the resin layer on the side which is warmer when the insulation board is in use and thus for the insulation of a warm room the foil is preferably the middle layer but for the insulation of a cold store the resin sheet suitably forms the middle layer. Polystyrene and polyethylene are the preferred resins but other resins are specified. The resin layer may be between 0À1-1À0 inch thick. The plasterboard preferably conforms to British Standard No. 1230; 1945, and is suitably 0À1-2À0 inches in thickness. The foil, preferably 0À0002-0À0015 inch thick, may be mounted on a bitumen treated kraft paper. The layers may be stuck together with an adhesive, e.g. polyvinyl acetate, which is preferably applied in the form of longitudinal bands. In the example the layers are glued together at 70‹ C. and under 10 lb./sq. inch pressure.