baber/WOPTO huggingface dataset:
Patent GB-1432382-A (GB)
Title: Method of driving a liquid crystal display device method of producing a drying filter
IPC: G02F1/133
Filed: 1973-04-03
Abstract: 1432382 Matrix displays MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 3 April 1973 [6 April 1972 16 June 1972 29 June 1972] 15950/73 Heading G5C A method of operating a matrix type liquid crystal display panel comprises applying voltages A, B, C of three different frequencies to gating circuits 8, 10 controlling one group of panel electrodes and voltages A, B, J to gating circuits 18, 20 controlling another group of electrodes to provide across matrix elements a voltage whose polarity varies with time. Liquid crystal display apparatus comprises a panel 1 with crossed conductor arrays 2 ... 7, a control circuit 8... 20 connected to each conductor and comprising OR gates 11, 12; AND gates 13, 14; inverters 15, 16 and a transistor 17. High and low frequency sources 28, 29 are connected directly to circuits 8...10 and through switch 30 and inverters 31, 32 to circuits 18 ... 20. Scanning pulses 101, Fig. 2a (not shown) of three times the low frequency are applied sequentially to the horizontal control circuits 8 ... 10 and select signals to terminals 36...38 of vertical control circuits 18... 20. The circuits 8 ... 10 apply a signal I Fig. 2 (not shown) comprising a D.C. potential whilst scanning pulses are applied followed by h.f. pulses; the voltage inverting in phase with the low frequency signal. When no selection signal is applied to terminals 36 ... 38 the circuits 18 ... 20 supply h.f. signals R. When a select pulse is applied the h.f. signal is replaced by a D.C. pulse and the cell on the horizontal line to which a scanned pulse is applied becomes energized. The arrangement results in h.f. pulse trains of alternating polarity, each of scan pulse duration, being applied to each cell of the line being scanned to prevent cross talk. The magnitude of applied voltages may be increased as the liquid crystal temperature decreases using voltage controlled sources or temperature sensitive resistors. The voltage may be varied in discrete steps using a transformer with several tappings and several temperature sensitive switches Figs. 11a... 11d (not shown). The frequency may be varied according to the temperature of the liquid crystal either continuously using two multivibrators Fig. 15 (not shown) or in steps using a circuit including frequency dividers Fig. 19 (not shown). The liquid crystal temperature is measured using a thermistor or bimetal strip; alternatively the resistance of a portion of the liquid crystal is used as an indication of its temperature.
Patent GB-1250056-A (GB)
Title: Decorative laminate having adherable coating thereon
Inventor: KELLY PETER BERNARD
IPC: C09J7/20
Filed: 1969-03-26
Abstract: 1,250,056. Decorative laminates. FORMICA CORP. 26 March, 1969 [16 April, 1968], No. 15951/69. Heading B5N. [Also in Divisions B1-B2] A decorative laminate comprises a heat-andpressure-consolidated assembly in superposed relationship of a decorative layer e.g. of paper, employing a thermosetting resin which does not undergo significant colour deterioration during the consolidation e.g. a melamine-formaldehyde resin, a core layer e.g. of one or more kraft paper sheets, employing a thermosetting phenolic resin, and, on the surface of the core layer remote from the decorative layer, a coating composition which is the dried residue of either:-(1) an aqueous acrylic polymer dispersion in which the polymeric content has a particle size between 0À1 and 0À4 micron, said coating composition having a minimum film formation temperature between 0 and 20 C., a Takon hardness between 0À5 and 3À0, and a transition temperature between - 20 C. and + 30 C., or (2) an aqueous dispersion of (A) a water-dispersible vinyl acetate polymer having a molecular weight of at least 20,000, a cold flow test value between 20 and 2000 and a particle size between 0À1 and 25 microns, (B) from 1% to 10% by weight, based on the weight of the vinyl acetate polymer, of a protective colloid, (C) from 0À1% to 3% by weight, based on the total weight of the dispersion, of a water-soluble starch, and (D) from 0 to 15% by weight, based on the weight of the vinyl acetate polymer, of a plasticizer. The acrylic polymer may be a homo- or co-polymer, many suitable monomers being specified. The vinyl acetate polymer may be a homo- or co-polymer. Specified colloids are carboxymethyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol, gum agar, gelatine and gum arabic. The coating composition is applied by conventional techniques, e.g. reverse roller, air knife, knife coating or spraying either to a resin-impregnated core sheet, or, when a plurality of core sheets are to be used in the core layer, to an unimpregnated core sheet. In a preferred embodiment, a sheet of aluminium foil is interposed between the decorative layer and the core layer prior to consolidation; in a further embodiment, a sheet of a blend of polymethyl methacrylate and polyvinylidene fluoride is superposed on the decorative layer prior to consolidation. The coated surface of a laminate according to the invention may be bonded to a substrate of wood, plywood, hardboard, cement-asbestos board or particle board by a non-pressure-sensitive adhesive e.g. a polyvinyl acetate emulsion, resorcinol-formaldehyde or urea-formaldehyde. Quantitative examples are given.
Patent GB-783467-A (GB)
Title: An improved servo-steering mechanism for motor vehicles
IPC: B62D5/06
Filed: 1955-06-03
Abstract: 783,467. Vehicle power steering. REIS, S. June 3, 1955 [June 9, 1954], No. 15982/55. Class 79(5) [Also in Group XXIX] In a vehicle fluid pressure power steering mechanism comprising a double acting piston and cylinder assembly having a hollow piston rod 7 projecting through one end of the cylinder to form cylinder spaces 5, 6 of greater and lesser effective areas and a control valve having t w c openings, one between the spaces 5, 6 and the other between the space 6 and an exhaust passage 15, the mechanism operates by a continuous flow of fluid to the space 6 and the piston is moved in one or other direction by restricting one or other of the openings in the control valve. As shown a threaded member 36 operatively connected to a steering control member (not shown) is engaged by a nut 37 carried by a hollow stem 18 of the control valve which extends into the piston 4 and the rod 7, the rod 7 carrying a member 33 operatively connected to a lever 34 pivoted at 35 and linked to the vehicle steering mechanism (not shown). The chamber 5 of the cylinder 1 is supplied with pressure fluid by an engine-driven pump 31. In the neutral position of the control valve, as shown, the fluid passes into the piston rod through holes 8, 17. The holes 17 are connected by a chamber 10, a restriction 12 and holes 16 to the cylinder chamber 6 and the chambers 5, 6 are connected by a chamber 11 in the piston to the exhaust passage 15 in the valve stem 18. The valve stem 18 is moved upwardly or downwardly relative to the piston 4 by rotating the member 36 in one direction or the other. Such downward movement causes reduced pressure flow past the restriction 12 into the chamber 6 which remains connected to exhaust, and hence there is a pressure build-up in the chamber 5 causing downward movement of the piston. Such upward movement causes reduced flow to exhaust and hence pressure buildup in the chambers 5, 6 and as there is a greater piston area in chamber 6 than in chamber 5 the piston 4 moves upwardly. The valve stem is centred and a feel-back is stated to be given to the driver by means of a spring 23 arranged between washers 21, 22 adapted to abut shoulders on the stem 18 and a cylinder 24 in the rod 7, the space between the washers 21, 22 being subjected to the fluid pressure in the chamber 5 through the holes 8, chamber 9 and holes 30, and a space 28 beneath the washer 22 being connected to exhaust through holes 29. The cylinder 24 is axially adjustable in the rod 7 by being screwed therein.
Patent GB-181963-A (GB)
Title: Improvements in operating mechanism for cranes and overhead travellers
IPC: B66D1/14
Filed: 1921-06-10
Abstract: 181,963. Cornes, T. r. June 10, 1921. Jib cranes; overhead travellers and transporters.-In a jib crane or overhead traveller of the kind in which the luffing or traversing drum C and the hoisting-drum A are driven from the same or different main power shafts through separate driving-trains but may be connected by gearing to effect luffing or traversing with horizontal travel of the load, the driving-train for the luffing drum 0 comprises a worm-wheel C<3> fast with the drum and either irreversible or provided with a brake. The drive for the luffing- drum is reversible, and the hoisting-drum A may be driven from the main power shaft directly or through gearing on the luffing-drum. The power shaft B drives a spur-wheel A' continuously, and either of two bevel-wheels C<7>, C<8> may be connected to the shaft B by operating a clutch lever E, in order to drive the luffing-drum C in either direction through the worm-gearing C<3>, C<4>. The hoisting-drum A may be moved longitudinally by a lever D so as to engage the wheel A', to be held in the free mid-position, or to engage a spur-wheel A<6> geared to a wheel C<2> on the luffing-drum. The luffing-drum may be of the fusee type, so that when the luffing and hoisting-drums are geared together through the wheels A<6>, C<2> the load is moved horizontally. For hoisting, the lever E is in mid-position, the wheels C<7>, C<8> are free on the shaft B, and the drum C is held stationary either by the worm drive or by an automatic brake; the lever D is moved to engage the hoisting-drum A with the wheel A<4>. For lowering, the drum A is moved into engagement with the wheel A', the clutch surfaces being used for braking. For luffing with horizontal travel of the load, the drum A is engaged with the wheel A<6>, and the lever E moved to engage one of the wheels C', C' with the driving shaft. An interlocking device for the levers D, E is arranged so that when the crane is loaded with the lever E in mid-position and the luffing-drum stationary, the lever D can be moved in either direction for hoisting or lowering, while the lever E can only be moved for rotating the luffing-drum in either direction after the lever D has been moved to the left to engage the drum A with the wheel A<6>. In this latter position of the two levers, the lever D cannot be moved back until the lever E has been brought back to mid-position and the wheels C, C<8> disengaged from the driving shaft. This interlocking gear is brought into action when the crane is loaded, by the tension in the luffing-rope moving the worm C<4> endwise on its shaft. In a modification, the gearing from the shaft B to the worm wheel C<3> is omitted, and the luffing- drum is driven by a separate power unit G having a reversing-switch interlocked with the lever D.
Patent GB-197561-A (GB)
Title: Improvements in electrical measuring instruments
IPC: G01R25/00
Filed: 1922-06-09
Abstract: 197,561. Reddie, L. N., (Officine Meccaniche Italiane). June 9, 1922. Polyphase transformers. - A phase-varying transformer for supplying the pressure coils of one or more wattmeters has two secondary windings S<1>, S" arranged at 120‹ to one another within a rotating field produced by a primary winding connected across the mains. The, secondary windings S', S" are rotatable as a whole.
Patent GB-945736-A (GB)
Title: Improvements relating to semiconductor circuits
IPC: H01L27/07
Filed: 1960-05-06
Abstract: 945,736. Semi-conductor devices. TEXAS INSTRUMENTS Inc. May 6, 1960 [May 6, 1959], No. 16068/60. Heading H1K. An " AND " logical gate circuit is formed from a single piece of semi-conductor material. In the embodiment shown in Fig. 1, a germanium or silicon body containing four PN diodes and a resistor is mounted on a ceramic substrate 10. The body is formed by diffusing donor material into the entire surface of a P-type body and etching away the undesired parts of the resulting N-type layer to leave 4 mesas containing PN junctions and a part having the desired resistance R 1  between soldered ohmic contact 34 and the part of the body containing the junctions. Underlying and in ohmic contact with the latter is a conductor 25 which functions to maintain the P zones of the four diodes at roughly the same potential. The equivalent circuit is shown in Fig. 2. Specification 945,734 is referred to.
Patent GB-1502842-A (GB)
Title: Elevator control system
IPC: B66B1/20
Filed: 1975-04-18
Abstract: 1502842 Elevator control system HITACHI Ltd 18 April 1975 [22 April 1974 5 June 1974] 16141/75 Heading G3N A multicar elevator control system selects a suitable car for servicing hall call requests and forecasts the change in the service condition of each car for the hall calls already allotted thereto when a new hall call is provisionally allotted thereto. Thus, in Fig. 1, where car A is ascending to service a hall call from the third floor and car B is ascending to service hall calls from floors 7, 8 and 9, when a hall call is made from the fifth floor it is not automatically allotted to car B which is the nearest. Instead the effect of such allocation on those waiting at floors 7 to 9 is calculated and if, for example, those on floor 9 would have to wait more than a certain time if car B called at the fifth floor, then the call is allotted to car A where no such wait would occur. Additionally it can also forecast the number of in-car passengers at various floors after provisionally allotting a hall call to that car to check that passenger limits would not be exceeded. This can be done by detecting the number waiting for a car at each floor or, additionally, taking into account the number leaving the car at the various floors. 1st Embodiment Figs. 2, and 3-13 (not shown) for three cars A, B, C This calculates both waiting times and loading limits (i.e. number of passengers) as described above using the circuit blocks shown on Fig. 2 for each car A, B, C. When a new hall call is set, it is provisionally allotted to each car, the necessary calculations are performed for each car, and circuit 16 selects which of cars A, B, and C is to actually service the call. At each landing the
Patent GB-1481309-A (GB)
Title: Clip
IPC: F16L3/237
Filed: 1975-04-11
Abstract: 1481309 Clips UNITED-CARR Ltd 11 April 1975 [11 April 1974] 16224/74 Heading E2B  A clip 10, Fig. 7 comprises two parts 11, 12 each part having a first portion snapengageable with a corresponding portion of the other part so as to be relatively rotatable and separable and a further portion e.g. arms 17, 18, 28, 29 engageable with a member e.g. a pipe, rod, cable, 13, 14 &c, the direction of snap engagement being transverse to the axis of rotation. As shown, part 11 has a base 15 connected by shank 21 to enlarged, disc-shaped head 20 and flexible arms 17, 18 e.g. to receive a cable 14. Part 12 has a base 22, flexible arms 28, 29 to receive cable 13, base 22 having a T-shaped slot 23, the entrance of which receives shank 21 and has converging sides 25 leading to a neck (26, Fig. 6, not shown) narrower, than shank 21 and circular part (27) so that parts 11, 12 are snap-engageable and relatively rotatable. Each part may have sufficient resilient arms to engage a plurality of cables (Fig. 8 not shown), or one part (61, Fig. 9 not shown) may engage an apertured panel.
Patent GB-476639-A (GB)
Title: Improvements in the production of resist effects on textile and other materials
IPC: D06P5/12
Filed: 1936-06-10
Abstract: Cellulose esters or ethers, dyeing; printing.--Local effects are obtained upon textiles, foils, films and similar materials made of an organic derivative of cellulose by applying locally a resist comprising a water-resistant substance of melting-point above 90 DEG C. which is soluble in organic solvents, immersing the material for 10 minutes or more in an aqueous dyeing or delustring liquor at a temperature not below 60 DEG  C. and removing the resist by solution in an organic solvent.  Substances suitable for the resist are (a) polymerization products of aliphatic or aromatic vinyl compounds, e.g. polymerized chlorinated vinylacetylenes, polyvinyl chloride or polystyrene, (b) highly chlorinated diaryls, (c) chlorinated naphthalenes, e.g. tetrachloronaphthalene, (d) chlorinated rubber, (e) polymerized chloroprene.  They may be applied in solution in organic solvents such as benzene, toluene, monochlorobenzene, dichlorobenzene, monochloronaphthalene, perchlorethylene or carbon tetrachloride. To make the resist less brittle or of better film-forming quality, there may be incorporated plasticizers, such as tricresyl phosphate, animal or vegetable oils or terebenthine, and a highly chlorinated naphthalene may be used as a plasticizer for a chlorinated rubber resist.  Specified resist compositions are mixtures of (1) chlorinated rubber, toluene, 1 : 2-dichlorobenzene and tricresyl phosphate, (2) chlorinated rubber, tetrachloronaphthalene, toluene, xylene and 1 : 2-dichlorobenzene, (3) chlorinated rubber, tetrachloronaphthalene, 1 : 2-dichlorobenzene and 1-chloronaphthalene.  In examples: (1) a cellulose acetate fabric is printed with the second of the above resist compositions, treated for \ba1/2\be hour in a dilute aqueous soap solution at 90 DEG  C., washed, dried and treated with toluene to remove the resist, leaving the fabric delustred locally; (2) a similar fabric is printed with the first of the above resist compositions dyed by treatment in an aqueous bath at 70 DEG  C. containing the dyestuff, 4-nitro-2-methoxyaniline --> dimethylaniline, washed, dried and treated with toluene to remove the resist.
Patent GB-948436-A (GB)
Title: Improvements relating to control devices for alternating electric current circuits
Inventor: RATCLIFF JOHN ALBERT
IPC: H02M7/06
Filed: 1959-05-12
Abstract: 948,436. Magnetic amplifiers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 12, 1960 [May 12, 1959], No. 16265/59. Heading H3B. [Also in Division H1] A magnetic amplifier comprises two transformers 1<SP>1</SP>, 1<SP>11</SP> having their primary windings supplied in parallel and their secondary windings connected to opposed rectifier bridges 12, 13 as shown to supply a load 14, the junction of the rectifier bridges 12, 13 being connected to the adjustable tapping 15a of a potentiometer 15 bridging load 14, the cores of transformers 1<SP>1</SP>, 1<SP>11</SP> being biased magnetically by permanent magnets CD1, CD2 and the biasing of the former core being opposed by passing a control current through coils 5a<SP>1</SP>, 5b<SP>1</SP> to change the working point of transformer 1<SP>1</SP>. If the devices CD1, CD2 are identical (except for the control windings) the current through load 14 is determined in amplitude and direction by the setting of potentiometer 15. Alternatively, if one of the permanent magnets is made weaker than the other a predetermined current for zero control current is obtained with potentiometer contact 15a central. The devices CD1 and CD2 can be combined into a single device (see Division H1).
Patent GB-367669-A (GB)
Title: Improvements in devices for registering customers consumption in restaurants and the like
IPC: G06C27/00
Filed: 1931-06-04
Abstract: 367,669. Changeable signs. HEGEWALD, O., 28, Hauptstrasse, Lengenfeld, Vogtland, Germany. June 4, 1931, No. 16297. [Class 3 (i).] A device for registering restaurant purchases &c. comprises a casing 1 containing a plurality of endless bands 8 bearing numerals. Each band 8 rides over a horizontal roller 6 and over a vertical roller 2 provided with a stud 4 accessible for engagement by a key for adjusting the band. The numerals are viewed through windows 13<1> located over the rollers 6. The margins of the bands are perforated to engage sprockets 10 on the rollers. A tray 13 for ashes or for holding glasses &c. may be combined with the device.
Patent GB-732978-A (GB)
Title: Reaction jet nozzles for aircraft
Inventor: ASHWOOD PETER FREDERICK
IPC: B64C29/00
Filed: 1952-06-27
Abstract: 732,978. Jet propulsion plant; gas turbine plant. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. June 26, 1953 [June 27, 1962], No. 16312/52. Class 110 (3). [Also in Group XXXIII] An aircraft jet pipe and nozzle assembly comprises two jet pipes each connected to a separate jet engine and each pipe discharges into one or more nozzles, the nozzles being so symmetrically disposed about a common axis that the jet thrust of each engine will have substantially the same line of action as that of the other. In Fig. 4, the jet engines 2, 3 discharge into jet pipes 22b, 23b and the pipes discharge into right- - angle pipe bends 24, 25. The pipe bend 24 is bifurcated to form two discharge nozzles 24a of rectangular section and the pipe bend 25 terminates in a single nozzle 25a also of rectangular section, the nozzle 25a being disposed between the. two nozzles 24a. The pipe bends and nozzles are rotatable by means of a, worm 37 and gear 36 so .that the nozzles discharge either rearwardly or downwardly. In Fig. 6, the discharge nozzle 34a of the pipe. bend 34 increases in diameter and envelops the nozzle 35a of the bend 35. The piper bends and nozzles are again rotatable so that the gases issue rearwardly or downwardly. In Fig. 8, the pipe bends 44, 45 each. open into two discharge nozzles 44a, 45a respectively, the nozzles being disposed symmetrically. In this embodiment, the direction of the jet stream is varied by rotating the whole assembly comprising the jet engines 2, 3, the jet pipes 22b, 23b and the pipe bends and nozzles by means of the worms 37 and gears 36. In the arrangements shown in Figs. 4, 6 and 8, the engines and jet pipes are disposed transversely across the aircraft, but in Fig. 3 the two engines 22, 23 and jet pipes 22a, 23a are disposed in a V-formation. In this embodiment, the nozzles 26, 27 are fixed and the gases are passed to the desired nozzle by rotation of the pipe bends 24, 25. Alternatively, the jet pipes may be permanently connected to a rearwardly-directed and a downwardly-directed nozzle and the gas stream may be diverted from one to the other by means of a deflector such as set forth in Specification 730,585.
Patent GB-647206-A (GB)
Title: Improvements in and relating to remote position indicators
IPC: G01C17/36
Filed: 1947-06-20
Abstract: 647,206. Reciprocating motors. BRIGGS, G., and BRITISH VACUUM CLEANER & ENGINEERING CO., Ltd. June 20, 1947, No. 16376. [Class 35] [Also in Groups XIX, XXXVI and XXXVIII] The receiver of a remote position indicator includes a vibrator in an iron casing comprising an A.C. energized coil 78 with a central iron core; and an axially magnetized ring 97 which vibrates inside a compartment 80 of the housing, being alternately attracted and repelled during each A.C. cycle. This vibrator prevents sticking at the bearings.
Patent GB-530377-A (GB)
Title: Improvements relating to blast furnaces
IPC: C21B7/00
Filed: 1939-06-03
Abstract: 530,377. Blast furnaces. DEMAG AKT.-GES. June 3, 1939, No. 16391. Convention date, June 4, 1938. [Class 51 (ii)] In a blast furnace having a dust collector a and eddy producing device b leading to a gas discharge pipe d, a safety device is provided to relieve the furnace of high pressures consisting of a counterweighted valve g arranged in a byepass pipe e leading from the dust collector to the gas discharge pipe d. The counterweight h engages a catch i when the valve g reaches its upper position. The catch is released by a remote control magnet k. The valve g may be actuated through electrically or pneumatically operated mechanism controlled by the pressure at the top of the furnace.
Patent GB-661505-A (GB)
Title: Improvements in or relating to sound recording apparatus
IPC: G11B3/08
Filed: 1949-06-21
Abstract: 661,505. Momentary contact switches. STEVENS, A. H. (Sound Scriber Corporation). June 21, 1949. No. 16441/49. Class 38 (v). [Also in Group XXXVIII] The "talk-listen" lever 32 of a dictating machine, on being rotated clockwise to the position shown, moves a cylinder 25 to the right to compress the air inside. This moves a piston 27 to the right to operate a retractive switch 28. After an interval the air in the cylinder 25 escapes at 30, and the switch returns under the action of spring 29.