baber/WOPTO huggingface dataset:
Patent GB-1126547-A (GB)
Title: Improvements in or relating to methods of assembling electron guns
IPC: H01J9/18
Filed: 1966-12-22
Abstract: 1,126,547. Cathode-ray tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 22 Dec., 1966 [25 Dec., 1965], No. 57446/66. Heading H1D. A method of assembling at least part of a C.R.T. electron gun comprises firing a plurality of spaced electrodes in a jig 7 including a pin 9, 10 which extends tightly through an aperture in each electrode, the pin alone holding the apertures coaxial and joining the electrodes together mechanically and electrically to terminals by melting solder into joints which have initial clearances and into grooves in an electrically insulating body 14. Parts 2, 3 form a box-shaped anode which is spaced from a control anode 1 by a ring 13. Terminal rods 15, (20), Fig. 2 (not shown), the body 14 and a cylinder 19 are also mounted in the jig with a clearance between adjacent surfaces about which rings 16 of Sn-Cu or Ag-Cu solder are placed. A cap 18 is placed over the jig which is heated in a reducing furnace to melt the solder which fills the clearances and grooves in body 14 connecting electrodes 1, 19 to terminals 20. Soldered surfaces are preferably of CuNi. The gun may be used in a display or vidicon tube supported entirely by the terminals sealed into the tube base.
Patent GB-1300007-A (GB)
Title: Method for producing embossed, laminated, thermoplastics sheet material
Inventor: ORTON JEFFREY BRUCE
IPC: B32B27/00
Filed: 1970-12-04
Abstract: 1300007 Embossing IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [4 Dec 1970] 57760/70 Addition to 1168273 Heading B6J In a process as described in parent Specification (Heading B6J) the thermoplastics sheet is laminated to at least one other sheet. The additional sheet or sheets may be sandwiched between the thermoplastics sheet and the flexible diaphragm. The sheets may be caused to adhere together by fusion during the embossing step or by the provision of adhesive on appropriate surfaces. The additional sheet(s) may be woven or non-woven fabric, unsupported cellular plastics, a combination of unsupported cellular plastics and either a woven or non-woven fabric, or non-cellular plastics. A non-cellular plastics sheet may be laminated for that surface of the thermoplastics sheet which is to be embossed and may cover a part or the whole of that surface. The thermoplastics sheet may include a blowing agent which decomposses when heated to cause the sheet to become cellular is described in parent Specification.
Patent GB-1409940-A (GB)
Title: Explosive projectile for a cartridge for sporting guns and such  a cartirdge
IPC: F42B7/10
Filed: 1973-12-13
Abstract: 1409940 Shotgun cartridges FABRIQUE NATIONALE HERSTAL SA 13 Dec 1973 [11 Jan 1973] 57820/73 Heading F3A A shotgun cartridge comprises an explosive projectile in which the explosive charge 7, Fig. 1, is surrounded by metal fragments 9 embedded in a plastic component 5, the rear part 6 of which acts as an obturator and as flight stabilizing means. The outer surface of the part 6 may be formed with longitudinal or helical ribs or grooves (not shown). Elasticity is imparted to the surface 26 of part 6 by the provision of a chamber 25. The fragments 9 are either balls or darts. A percussion cap 8 for firing the charge 7 upon impact of the projectile is detonated by a firing pin 11. Safety is provided by a shearable flange 14 formed on the firing pin and by a shutter 15 which, upon escape of a ball 20, is moved by a spring from out of an obturating position. In another embodiment, Fig. 3, the detonator 8 is fired upon impact of the projectile by air being forced from a deformable chamber 24 through a passage 23 and on to the detonator.
Patent GB-1436398-A (GB)
Title: Treatment of sludge
IPC: C02F11/13
Filed: 1973-12-14
Abstract: 1436398 Treating sludge VEREINIGTE KESSELWERKE AG 14 Dec 1973 [14 May 1973] 58168/73 Heading C1C A plant for the heat treatment of sludge, e.g. sewage sludge, comprises a high pressure pump through which the sludge is pumped to a heat exchanger for heating incoming sludge utilizing heat from treated sludge and thence to a reactor for treating the sludge at elevated temperature and pressure, wherein a pressure-reducing means is inserted between the heat exchanger and the reactor.
Patent GB-1248235-A (GB)
Title: Silver halide photographic materials
Inventor: WEBER JOANNE BROWN
IPC: G03C1/43
Filed: 1968-12-10
Abstract: 1,248,235. Photographic silver halide materials. EASTMAN KODAK CO. Dec.10, 1968 [Dec.11, 1967], No.58598/68. Heading G2C. A sensitive photographic material comprises a support bearing a layer comprising a photographic silver halide containing occluded polyvalent metal ions, the material containing a halogen acceptor, by which is meant a compound which enhances the photolytic silver yield or the photolytic silver density of print-out silver in a photographic silver halide emulsion, and a stabilizer precursor (i.e. a compound which has negligible silver halide stabilizing activity, but which can be treated with an activator compound, such as a free base, and/or be heated to give an active stabilizer), incorporated in the silver halide - comprising layer or a layer adjacent thereto. The layer comprising the silver halide may be a photographic silver halide emulsion layer. The polyvalent metal ions may be the trivalent ions of arsenic, antimony, bismuth, rhodium, iridium and gold or the tetravalent ions of osmium, indium or platinum. The halogen acceptor preferably contains nitrogen and may be of the urazole type. The stabilizer precursor is preferably a thio compound having an alkyl group attached to the sulphur atom and many examples are given. In the examples a visible image is obtained with the sensitive photographic material of the present invention, the latter being first exposed imagewise, then preferably heated to 190 to 500F. (or contacted with basic solutions) to inhibit printing-out in the non-image areas and to activate the stabilizer precursor which improves the stability of the background areas to high humidity or moisture and to prolonged exposure to room light, and finally uniformly exposed to photo-develop the latent image produced by the first exposure. The material according to the present invention may apparently also function as a print-out material.
Patent GB-1484458-A (GB)
Title: Speed control systems for electric motors
IPC: H02P27/06
Filed: 1973-12-19
Abstract: 1484458 Control of A.C. motors; inverting SCRAGG POWER DRIVES Ltd 6 Dec 1974 [19 Dec 1973] 58740/73 Headings H2F and H2J A digital speed control system for an induction motor comprises means for producing a pulsed input signal proportional in frequency to desired motor speed; speed setting means, connected to the output of the pulse signal producing means, and including means for dividing the number of pulses therefrom by a constant factor and a ring counter, connected to be driven by the dividing means, for generating a series of pulse train waveforms for selectively switching an inverter to produce an induction motor power supply ; and voltage control means, connected to the output of the pulse signal producing means, and including a monostable multivibrator for generating a fixed duration output pulse for each input pulse from the pulse signal producing means, and mixing gates, modulated in response to the fixed duration pulses, connected to one-half only of the outputs of the ring counter such that the inverter output voltage is controlled to be directlv proportional to the frequency of the pulsed input signal and hence to the frequency of the power supply. In Fig. 1 a three phase squirrelcage induction motor 6 is supplied from an inverter 5 comprising a six-transistor bridge circuit with parallel protection diodes. Fig. 2 (not shown) and the control system comprises an oscillator 1 supplying divider 2 and monostable multivibrator 8, which controls mixing gates 7 connected to three of the six pulse train waveforms produced by a three-stage ring counter and waveform generator 3, these waveforms each having a pulse width and spacing of 180 degrees and the pulses of each waveform being phase-displaced by 60 degrees with respect to those of the preceding waveform. A theoretical analysis of the control system operation, valid for the three-phase inverter 5 or a single-phase one supplying a single-phase induction motor, is derived from the duration t of the pulse from multivibrator 8, the period T of the pulses from oscillator 1, the factor n of divider 2 and the maximum output voltage Vm of the inverter 5 at full modulation. Typical switching operations of the inverter transistors are described, Fig. 3 (not shown). Fig. 4 shows details of members 2, 3, 7 and 8, wherein a clock pulse for the divider 2 is formed by a differentiating circuit R1, C1 and a gate G1, member 3 consists of an integrated circuit interconnected with gates G2, G3, and the gates G4, G5, G6 of the member 7 are controlled by a pulse from multivibrator 8 of width determined by the product of resistor R2 and capacitor C2 connected as shown to the integrated circuit constituting this multivibrator.
Patent GB-1328750-A (GB)
Title: Valves for fluids
IPC: F15B13/043
Filed: 1971-12-21
Abstract: 1328750 Fluid-pressure servomotors SPERRY RAND CORP 21 Dec 1971 [18 Feb 1971 59254/71 Heading G3P In the event of loss of pilot pressure fluid, a directional valve for use in hydraulic appliances comprising a main body 10 having a slidable spring-central spool 12 attached to an actuating piston 20 and a servomotor comprising a pilot valve spool 38 for admitting and releasing pressure fluid 10 and from the larger area (right in the figure) of the piston, is provided with an auxiliary valve, normally inoperative, but responsive to overtravel of the valve spool 38 (to the left) for releasing pressure fluid trapped in a port as 17 to both sides of the piston 20, (thus shifting the spool 12 to the left). Ports 15 and 17 communicate with reversible motor passageways, ports 14 and 19 communicate with tank return passageways. Spools 12, and 38 and auxiliary valve spool 96 are all provided to axial bores to provide a passageway for the release of  the trapped fluid. The auxiliary valve is provided with a washer of which acts as a check  valve. The pilot valve is actuated via a lever 52, which may be connected to any desired operating mechanism or, as shown, which is connected to a spring-centred plunger 70 held by detents (not shown) which in turn are releasable by a solenoid 62.
Patent GB-1440959-A (GB)
Title: Dielectric composition which can be made conductive by electrical activation
IPC: G11C17/08
Filed: 1973-12-21
Abstract: 1440959 Polymer compositions containing metals and metalloids E I DU PONT DE NEMOURS & CO 21 Dec 1973 [22 Dec 1972] 59562/73 Headings C3B C3P C3Q and C3R [Also in Divisions H1 and H2] A composition comprises metal or metalloid particles dispersed in a polymer binder, the particles having an insulating coating so that the composition as formed is non-conducting, at least 30% by weight of the particles having smooth, rounded edges, i.e. they are spherical or nodular but not cubical, acicular or lamellar, and the binder material having a glass transition temperature of at least 40‹ C. The composition is capable of being rendered conductive by application of an activating electrical potential and a plurality of isolated conductive paths so formed may be used as current regulating junctions for selectively activating semi-conductor devices in a read-only memory (see Division H1). Particle materials specified are Al, Sb, Bi, Cd, Cr, Co, In, Pb, Mg, Mn, Mo, Nb, Ti, Ta, W, Si and Se coated with the oxide, sulphide or nitride thereof. The particles preferably constitute 35 to 90% by volume of the composition. Most polymers meet the glass transition temperature requirement and examples are given of polyolefins, polyvinyl derivatives, polybenzimidazoles, polyesters, polysiloxanes, aromatic polyimides, polyamideimides, polyester-imides, polyamides, polysulphones, polycarbonates, polyacrylonitriles, polymethacrylonitriles, polymethyl methacrylates, polystyrenes, poly-(α-methylstyrenes) and cellulose triacetates, also rubber and epoxy resins optionally modified with a diamine.
Patent GB-1178100-A (GB)
Title: Electronic Organ
Inventor: LESLIE DONALD JAMES
IPC: G10H3/03
Filed: 1968-12-16
Abstract: 1,178,100. Electronic organ. COLUMBIA BROADCASTING SYSTEM Inc. 16 Dec., 1968, No. 59661/68. Heading G5J. An electronic organ comprises a set of sine wave generators 10 for notes of the organ, key means operatively connecting said generators to an output channel, selectively operable circuit means for borrowing from the generators signals corresponding to certain lower order harmonics, means for transmitting said borrowed signals to the output channel, a set of composite supplemental generators 30 producing signals free of said certain lower order harmonics but rich in higher order harmonics, and means operatively associating the supplemental generators individually and respectively with said key means. As shown, each key 13 has associated therewith a series of switches S 1 , S 2 , S 4 , S 5 , S 6 , S 8  and S c . The key and switches shown are for the note A 4 . The switch S 1  connects the generator 10 for A 4 , to a bus-bar B 1 , which is connected to an amplifier 11 via an adjustable control element W 1 . The busbar B 1  is engaged by all of the switches S 1  for all of the keys 13. Accordingly, if the element W 1  is adjusted for signal transmission all the fundamentals for the various notes will be operative. Similarly, elements W 2  . . . W 6 , W 8  control the strength of the second . . . sixth, eighth harmonics. Supplemental generators 30 provide the seventh, ninth, tenth and higher order harmonics for each note and are connected to switches S c  which engage bus-bar B c , elements W c  controlling the signal to the amplifier 11. On simultaneous operation of generators 30 with generators 10 to produce reed and string tones beat effects are minimized since said lower order harmonics are precisely in tune with other sine wave generators. Composite generators (such as stacked tone wheel, magnetic wheel and photo-electric generators) for use as the supplemental generators 30 are described (Figs. 2-4, not shown). An organ in which the fifth, sixth and higher order harmonics are provided by the supplemental generators is also described (Fig. 5, not shown). In another embodiment the supplemental generator for each note is in two parts (70, 71, Fig. 6, not shown), one part providing the odd harmonics and the other part the even harmonics.
Patent GB-1459750-A (GB)
Title: Fine-metal-particle-based magnetic recording medium of environ mental stability
IPC: C09D7/12
Filed: 1973-12-31
Abstract: 1459750 Magnetic recording medium MINNESOTA MINING & MFG CO 31 Dec 1973 [2 Jan 1973] 60194/73 Headings C3P C3R and C3B [Also in Division B2] Polyurethane binders used in the preparation of magnetic recording media include a polyester polyurethane prepared from neopentylglycol, poly-epsilon-caprolactone diol and diphenyl methane diisocyanate in a methyl formamide solution. Such a binder is mixed with particles at least 75% of which is metal, a major proportion of which is iron, cobalt or nickel and an aliphatic amine having a pH of at least 8 is aqueous solution at 25 C. and coated on a tape, e.g. of polyethyleneterephthalate. Preferred amines include tris - 2,4,6 - (dimethylaminomethyl)-phenol, tri-alkylamine, tri-butylamine and tri-n-decylamine. Other amines which may be used include ethylenediamine, sec-butylamine, t-butylamine, n-decylamine, tetradecylamine and stearylamine. Amino silanes such as N- beta - (aminoethyl)gamma - amino - propyltrimethoxysilane. Dispensing agent may also be added to the binder compositions. In an example 15À8 parts of vinyl chloridevinyl acetate copolymer (87% vinyl chloride, 13% vinyl acetate) and 5À2 parts dioctylphthalate were mixed with 100 parts acicular particles containing 75% Fe, 5-8% Co, and 3 to 4% Cr, 7 parts tridecyl polyethyleneoxide phosphate ester and 87 parts toluene and knife coated on to polyethylene terephthalate tapes. In a further example, the binder was 13À6 parts of a diglycidyl ether of bisphenol A of epoxide equivalent weight 190, 4À6 parts of an acrylonitrile butadiene copolymer and 2À8 parts of methylene dianiline.
Patent GB-1255879-A (GB)
Title: Vibratory apparatus
IPC: B65G27/32
Filed: 1969-12-16
Abstract: 1,255,879. Vibratory conveyers. REX CHAINBELT Inc. 16 Dec., 1969 [23 Dec., 1968], No. 61135/69. Heading B8A. In a reciprocating conveyer 1, Fig. 1, which is mounted on springs 3, 4, and vibrated by an eccentric shaft 7 through links 9, 10 and a spring 14, the shaft is driven by a squirrel-cage induction motor 5 to which a variable voltage is applied to vary the vibration speed through a range which includes the natural frequency of the system. As described a flywheel is provided either on the motor or on the eccentric shaft. The spring 14 is pre-compressed to produce a force which is greater than the alternating component of force in the links 9, 10. The variable voltage may be produced by a variable autotransformer, Fig. 3 (not shown), or a controlled semi-conductor rectifier circuit which includes a motor speed sensing circuit, Fig. 4 (not shown).
Patent GB-1293220-A (GB)
Title: Identification and classification of seismic reflection velocity properties on seismic reflection sections
IPC: G01V1/28
Filed: 1970-12-29
Abstract: 1293220 Seismic signal processing PETTY GEOPHYSICAL ENG CO 29 Dec 1970 [5 Jan 1970] 61534/70 Heading H4D A seismic reflection display which includes velocity information is prepared automatically by plotting processed seismic signals as a time or depth section, plotting an overlay representative of interval velocity data and having horizontal and vertical scales in the same ratio as for the seismic section, and superimposing the overlay (e.g. an opaque sheet or a transparency, superimposed directly or by optical projection) on the seismic section. In the Fig. 6 example the seismic section is a depth section and the overlay is in the form of iso-time lines 602 . . . 612. Each such line represents the profile of a hypothetical reflector giving the same two-way seismic travel time at different points along a traverse, taking into account velocity charges such as those due to low velocity zone 601. In the Fig. 5 example the seismic section is a time-section and the overlay is in the form of iso-depth lines such as 102. By comparison with line 102, line 134 is seen to represent a dipping reflector and is not falsely interpreted as showing a structural high below the point 0.5 miles along the traverse. The overlay is preferably coloured differently from the seismic section. Several overlays may be prepared, based on different velocity functions. It is stated that velocity data may be obtained from well logs or from the seismic reflection signals. An overlay based on the velocity down to a reflector causing multiple reflections and on the same velocity for all deeper depths may be used to identify multiple reflections in the seismic section. An automatic data processing system is described in which (a) digitally recorded common depth point (CDP) seismic reflection signals are processed to obtain interval velocity data, (b) normal moveout corrections based on these velocity data are applied to the signals and the corrected CDP signals are stacked, (c) the stacked signals are subjected to further processing including deconvolution and filtering, (d) the processed signals are plotted as a time or depth section, (e) iso-depth or iso-time values are computed from the interval velocity data and (f) these values are plotted as an overlay transparency.
Patent GB-1269679-A (GB)
Title: Improvements in or relating to conveying apparatus
IPC: B65G25/00
Filed: 1969-12-19
Abstract: 1,269,679. Reciprocating conveyers. SMERALOVY ZAVODY, NARODNI PODNIK. 19 Dec., 1969 [29 Dec., 1968], No. 62100/69. Heading B8A. Apparatus for conveying workpieces between a first machine (50a) and a second machine (50b) (Fig. 1, not shown) comprises a conveyer operable to advance workpieces along a workpiece support surface 34. The conveyer comprises a plurality of slide members 12, 13, interconnected for common reciprocable movement and a plurality of flights 29 pivotally mounted on the slide members and interconnected by linkage means 32 for common pivotal movement. The slide members are driven by the action of a first cam 15, a three-armed lever 10, 10a, 10b drivingly connected to one slide member. The arm 10 is connected by a rod 23 adjustable in length, with a lever 25 carrying a cam follower 24 whereby rotation of the cam 15 causes reciprocation of the slide members. Means for pivoting the flights 29 to extend above the surface 34 during movement of the slide members in a direction towards the second machine, and to lie beneath the surface 34 during the return movement, comprises a second cam 35, a two-armed lever 42 linked with the flights 29 for pivotal movement therewith and connected to a lever 47 having a cam follower 46. Thus rotation of the second cam 35 effects pivotal movement of the flights 29, the first and second cams and the three-armed lever 10 are mounted on a common shaft 9. The linkage means 32 comprises rods connecting the flights 29. The latter are connected by an adjustable link 53, 54 to a leading flight 51 (Fig. 3). This has a lower extension connected by a linkage 55, 57, (Fig. 3), to arms 62, 65, connected respectively to jaws 69, 69, for successively inserting each workpiece 33 in the trimming press (50b). The jaws 69, 69 have flash removers 70, 70. Operation.-The leading workpiece 33a is fed by the flight 51 up against a stop 74. On rearward movement of the flights 29, the linkage 55, 57, opens the jaws 69, 69, as they move rearwardly. The stop 74 is lowered by the action of an arm 74a of the stop, which is able to drop down a cam surface 79 carried by the slide 13a of the flights 29. On forward movement of the flights 29, the jaws 69, 69, close on the workpiece 33a and carry it into the trimming press (50b).
Patent GB-727644-A (GB)
Abstract: 727,644. Weaving. FLEISCHER, S. S. C., and THOMSEN, C. C. Oct. 27, 1950 [Dec. 10, 1949], No. 26283/50. Classes 142(2) and 142(4) Lateral contraction of a fabric is obviated by using weft having a latent excess of length which is released during beat-up. The weft may be held in coils, loops, or spirals by thin binder threads or by a coating of lacquer, glue, or starch, or by sticking to a strip of paper, the impact of the reed causing the coils, &c. to be released. The binder threads may be of cellulose acetate, which has a small elastic 'elongation under tension followed by a large inelastic elongation and can alternatively be weakened by acetone, or of casein or viscose which can be weakened by water. The weft may be impregnated or coated with thermoplastic material, or by material that can be weakened by liquid, which may be applied only at intervals along the thread. Ordinary weft may alternate with weft according to the invention.
Patent GB-2012110-A (GB)
Title: Electric switch
IPC: H01H1/42
Filed: 1978-12-12
Abstract: An electric switch construction in which one limb of a U-shaped fixed contact (2) is provided with a connecting part (1) which protrudes from the switch housing and provides terminals (11, 12). One limb of the contact 2 is engaged by a U-shaped movable contact (4) which makes contact with both sides of the limb. The contact 4 may bridge fixed contacts arranged end-to- end and may be mounted on a push button slide, 9, 10 or a rotor. <IMAGE>
Patent GB-2014048-A (GB)
Title: Swimming aid
IPC: A63B31/14
Filed: 1979-01-18
Abstract: A swimming aid comprising an elasticated sleeve (1) to be received on the lower part of a human limb carrying rings of flaps (2) attached thereto which will open up (6) when moved through the water in a propulsion direction and close down onto the sleeve (1) in a recovery direction produced by the swimmer. The flaps (2) may be interconnected by elasticated secondary flaps (4) and/or held against movement beyond 90 DEG  by strings leading from the sleeve (1). <IMAGE>