baber/WOPTO huggingface dataset:
Patent GB-1242803-A (GB)
Title: Magnetic film memories
Inventor: VIETH ROBERT FRED
IPC: C04B35/26
Filed: 1969-03-03
Abstract: 1,242,803. Magnetic storage apparatus. LITTON INDUSTRIES Inc. 3 March, 1969 [1 March, 1968], No. 56171/70. Divided out of 1,242,802. Heading H3B. The description is the same as that disclosed in Specification 1,242,802 but the claims are directed to a memory device which includes a ferromagnetic film material of an alloy including gadolinium and/or vanadium. The description also includes reference to the use of one thin film instead of two as described in the parent.
Patent GB-1405170-A (GB)
Title: Reclamation of fluoropolymers
IPC: C08F8/00
Filed: 1972-12-06
Abstract: 1405170 Reclaiming amine-cured vinylidene fluoride polymers DUNLOP Ltd 28 Nov 1973 [6 Dec 1972] 56309/72 Heading C3P Amine-cured polymers of vinylidene fluoride are reclaimed by treatment with concentrated nitric acid, preferably by boiling with the acid. In examples are used copolymers of vinylidene fluoride and hexafluoropropene or tetrafluoroethylene and pentafluoropropene, cured with N,N<SP>1</SP>-dicinnamylidene-1,6-hexanedramine. The products can be recured.
Patent GB-1419284-A (GB)
Title: Ceramic dielectric composition
IPC: H01G4/12
Filed: 1973-12-05
Abstract: 1419284 Dielectrics TDK ELECTRONICS CO Ltd 5 Dec 1973 56327/73 Heading C1J A ceramic dielectric of permittivity at least 900 at 1 kHz comprises, in weight per cent, SrO 7À1-49À9; Bi 2 O 3  0À7-28À8; TiO 2  32À3- 67-4; BaO 2À6-49À3 the TiO 2  amount being greater than the stoichiometric equivalent for Sr and Ba titanates. Less than 30% of Sr and Ba oxdes can be replaced by one or more oxides of Ca, Zn, Mg and Cd; or less than 50% of them replaced by PbO; and less than 30% of TiO 2  can be replaced by at least one oxide of Zr, Sn and Hf. Up to 0À5% of at least one of clays or oxides of Mn, Cr, Nb, Ta, Fe, Co, and R 1 E, e.g. La and Ce are optional.
Patent GB-1407070-A (GB)
Title: Electrostatic precipitator
IPC: B03C3/155
Filed: 1972-12-08
Abstract: 1407070 Electrostatic precipitators CARRIER CORP 8 Dec 1972 [14 Feb 1972] 56798/72 Heading B2J  An electrostatic precipitator comprises an air flow chamber having end walls 21, 22; a pair of conductive grids 110, 111 extending across the chamber, grid 110 being connected to a positive potential derived from a first power pack (143) Fig. 10 (not shown) and grid 111 being connected to a negative potential supplied by a second power pack (147); a fibrous web 130 of nonconductive filter medium disposed between the grids 110, 111, a supply roll 131 of the medium being journalled in a supply compartment 25 and a take-up roll 137 of used medium being journalled in a collection compartment 27; and an ionising assembly removably mounted upstream of the grid 110, the assembly being in three sections separated by compressible strips 97. A sensor, e.g. a differential pressure switch, monitors the air flow through the filter and, in response to a predetermined reduction in this flow resulting from clogging of the filter medium in use, operates to energise a motor 153 whereby the used material is wound up on roll 137, means (171-177) Fig. 10 (not shown) being provided to ensure that the motor 153 remains energised until a length of web equal to the width of the air flow chamber has been advanced from the supply roll 131. A switch 200, actuated by an arm 195, energises a warning lamp when the roll 131 is exhausted. The ioniser assembly comprises earthed electrodes (70) Figs. 5 to 7 (not shown) which are of hollow rectangular construction and ionising electrodes (85) in the form of resiliently  mounted wires which are also connected in the positive potential supplied by the first power pack 143.
Patent GB-1286279-A (GB)
Title: Improvements in and relating to gear boxes
Inventor: CLAY EDWARD HARTLEY
IPC: F16H3/74
Filed: 1969-11-21
Abstract: 1286279 Variable speed gearing E H CLAY 21 Nov 1969 57153/69 Addition to 1055987 Heading F2D The gearing of parent Specification is subject to the following modifications:-(a) the fixed gear is a ring gear 45; (b) the connection between the one differential gear shaft 5 and the fixed gear is via a train of gears 41, 42, 43. The gears may have helical teeth.
Patent GB-1171789-A (GB)
Title: A Recording Device.
Inventor: REYNOLDS HARRY
IPC: G02B27/02
Filed: 1966-12-21
Abstract: 1,171,789. Toys. H. REYNOLD. 11 Dec., 1967 [21 Dec., 1966], No. 57316/66. Heading A6S. [Also in Divisions G8; G4 and G5] Pictures 4 of various objects on a strip 5 are selectively placed behind a window 3 by rotation of one or other knob 8. The user of the apparatus looks through a fixed focus telescope 19 to find such an object and then presses a button 17 to advance a counter 10.
Patent GB-1099767-A (GB)
Title: Improved method for the preparation of arylisothiocyanates
Inventor: RASSCHAERT ANTOINE THEOFIEL
IPC: C07C331/28
Filed: 1966-12-28
Abstract: Aryl isothiocyanates are prepared by thermal decomposition of arylthioureas in an inert solvent, in presence of HCl.
Patent GB-1293907-A (GB)
Title: Self-tuning circuits
Inventor: GRAY FREDERICK MARTIN
IPC: H03J3/18
Filed: 1968-12-10
Abstract: 1293907 Automatic tuning circuits ENGLISH ELECTRIC CO Ltd 10 Dec 1969 [10 Dec 1968] 58553/68 Heading H3A [Also in Division H2] In an automatic tuning circuit, a tuned circuit includes a capacitor c and an amplifier 12-14 and the input signals developed across the tuned circuit and a resistance R D  are applied to a phase comparator 6-11 whose output controls the gain of the amplifier so as to vary the effective impedance of the capacitor in a sense tending to maintain the tuned circuit in resonance with the input signal frequency. In operation, the phase comparator phase-shifts the input a by 90 degrees at 6, squares the inputs a, b at 7, 9 using one of the squared signals as a clamp for the other and applies the clamped signal to an integrator 11. The integrator output is applied to a potential divider 12, 13 having a voltage variable element, e.g. FET 12. The instantaneous output at the junction of resistors R 1 , R 2  is thus designed to be indicative of amplitude and vector changes only of the input signal.
Patent GB-1291069-A (GB)
Title: Apparatus for arranging substantially laminar articles into spaced groups
Inventor: SALOMON JACOB
IPC: B65G47/08
Filed: 1969-12-01
Abstract: 1291069 Packaging tea bags; endless conveyers J SOLOMON 30 Nov 1970 [1 Dec 1969] 58643/69 Headings B8C and B8A Groups of tea bags are fed along a guide 3 by pairs of fingers 6, 7, the fingers of each pair being movable apart to separate the groups. Each pair of fingers are mounted on a pair of arms 16 carried by a rotatable pintle extending between a pair of conveyer chains 8. Stops 10 on a chain 11 moving at a slower speed than the chains 8 engage a depending tab 9 on each finger 6 causing the finger to slide along its arms 16 away from its associated finger 7 which is fixed to the arms. A cardboard box may be placed over each group of bags which may have been enclosed in a paper wrapper, or alternatively a heat shrinkable plastics film may be wrapped around the group of bags. The orientation of the arms 16 is controlled by guides 24-27 and 21 engaging an extension of a pin 30 extending between the arms. The fingers of each pair are pushed together during the return run of the chains 8 by a leaf-spring 22, or by a chain engaging the tabs 9 and rotating at a slower speed than the chains 8. At the end of the return run the arms 16 are lifted to the inlet of the guide 24 by an arm (38, Fig. 4, not shown) which is vertically reciprocated by a cam mounted on a drive sprocket which drives the sprockets 19 of the chains 8 by means of an arm pivoted on the drive sprocket and engaging in a slot in a wheel mounted on the shaft of the sprockets 19. The arm is spring-urged against a stationary cam, the arrangement being such that when the arms 16 are being lifted the wheel and hence the sprockets 19 are driven backwards allowing the arms 16 to reach the start of the guide 24.
Patent GB-1286459-A (GB)
Title: Detergent compositions
Inventor: EVANS JOHN MON
IPC: C11D3/386
Filed: 1968-12-12
Abstract: 1286459 Bleaching detergent compositions UNILEVER Ltd 9 Dec 1969 [12 Dec 1968] 59272/68 Heading C5D A detergent composition comprises (A) a surfactant, (B) an inorganic per salt, (C) an organic compound which forms a per acid with (B), (D) at least one cotton-substantive fluorescent agent which is a derivative of 4,4<SP>1</SP>-di- (sym. - triazinylamino) - stilbene - 2,21 - disulphonic acid or a salt thereof which has been purified to contain not more than 0À001 % by weight of a triazine derivative of formula wherein R 1  is OH or halogen, R 2  is OH or -NR 4 R 5 , each of R 4  and R 5  being H, alkyl, substituted alkyl, aryl substituted aryl, or R 4  and R 5  form a heterocyclic ring, and R 3  is alkyl, substituted alkyl, aryl or substituted aryl, (A) may be an anionic, cationic, amphoteric or non-ionic surfactant, (B) may be sodium perborate, a percarbonate, perpyrrophosphate or persilicate, (C) may be sodium acetoxybenzene sulphonate, triacetyl cyanurate, N,N,N,N - tetraacetyl ethylene diamine, N- acetyl imidazole, N,N<SP>1</SP>-diacetylbarbitone, N,N,N,N - tetraacetyl glycolural and others, (B) and (C) may be present in quantities of 5-20% by weight. A metallic catalyst, e.g. a cobalt chelate of pyridine-2-carboxylic acid or 1,10-phenanthroline may be present. Optional additives are (a) builder salts , e.g. sodium carbonate, sodium sulphate, sodium tripolyphosphate, sodium nitrilotriacetate and sodium ethylene diamine tetraacetate; (b) enzymes, e.g. protease; (c) hydroropes, e.g. alkali metal toluene sulphonate; (d) lather boosters and controllers, anti-redeposition agents, germicides and anti-tarnishing agents.
Patent GB-1402268-A (GB)
Title: Spark ignition systems
IPC: F02P5/04
Filed: 1971-12-21
Abstract: 1402268 Automatic control of ignition LUCAS ELECTRICAL CO Ltd 27 Nov 1972 [21 Dec 1971] 59504/71 Heading G3N [Also in Divisions F1 and G4] A spark ignition system for a vehicle actuates a semi-conductor switch to produce a spark, on equality between two digital signals. A transducer sensing engine manifold depression or throttle angle produces a 6-bit digital signal. A clock-driven counter provides, via a decoder, a series of 3-bit signals representing the 16 numbers 1,2,3,4,5,6,7, 8,8,7,6,5,4,3,2,1 which are added (at the least significant end) to the 6-bit signal, each of the 16 results in turn being decoded to select one of 8 rows of a diode matrix to provide eight 4-bit signals from the row. A 6-bit signal from a transducer sensing engine speed is also similarly incremented with numbers 5,6,7,8,8,7,6,5,4,3,2,1, 1,2,3,4 from the counter and decoder, the 16 results each being decoded to select one of the eight 4-bit signals from the currently-selected matrix row. The 16 four-bit signals are added to each other using an adder feeding a register feeding one input of the adder, and the 5 most significant bits taken, viz. the average of the 16 numbers. This average represents desired timing angle, i.e. the angle between a piston datum position (e.g. top dead centre) and the position at which a spark is to be produced. A 5-bit signal representing desired control angle, i.e. the angular displacement between the point at which the spark is produced and the point at which the spark-producing circuitry is to be reset to prepare for the next spark (this point being chosen e.g. to reduce power consumption), is produced similarly, or by logic responsive to the engine speed input. In response to pulses produced by sensing a slotted and perforated disc on the engine crank-shaft, the timing angle signal is set into a counter and counted down, zero count setting a flip-flop to actuate the semi-conductor switch, which is a transistor, to produce the spark, zero count also causing the control angle signal to be set into the counter which is then counted down to zero again, the flip-flop being then reset. Operation repeats for the next spark. One or more sparks may be produced per revolution of the crank-shaft. In one embodiment, the transistor connects a battery via a transformer and the distributer to the plugs, the transistor being made non-conducting to produce the spark. In another embodiment, the spark is produced by discharging a capacitor through a transformer connected via the distributer to the plugs, the discharge being accomplished through a thyristor made conducting by means of a second transformer when the transistor is made conducting. The capacitor is recharged from the primary of the second transformer when the transistor is made non-conducting again.
Patent GB-1439480-A (GB)
Title: Film cassette
IPC: G03C8/42
Filed: 1973-12-21
Abstract: 1439480 Film cassette FUJI PHOTO FILM CO Ltd 21 Dec 1973 [23 Dec 1972] 59508/73 Heading G2X A cassette 1 contains hand-type film units MS and a rubber band 11 for ejecting the units from the cassette into a camera C. The empty cassette is removed and the film units are exposed, processed and removed from the camera one by one. As shown in Figs. 5 and 13, when the cassette is inserted, spring-pressed pins C5 1 pivot latches 3 to release the cassette door 13 so that the band 11 can eject the units MS. In Figs. 15-20 the band 11 is threaded through an element 18 which holds the band out of contact with the film units. When the latches 3 are opened by the pins C51, a pin 22 on one of the latches is moved away from levers 16, 17 to allow a spring 19 to pull lever 17 away from element 18. This frees element 18 so that the band 11 can eject the units. In Figs. 21-23 (not shown) the cassette has a casing (CA, CB) which has to be removed before the cassette is inserted into the camera. The cassette contains two untensioned bands 11 which become tensioned on removal of the casing (CA, CB). In Figs. 24, 25 (not shown) a knob (27) is provided for manually releasing the door latch 3. In Figs. 26-32 (not shown) the film units are restrained by bands (30) held by clamps (29). Projections (100), Fig. 9 (not shown) on the camera, release the clamps (29) and the band 11 pushes the units out, breaking a light tight door (28) of the cassette. Figs. 33-36 (not shown) show an arrangement similar to that of Figs. 26-32 plus the lever arrangement 16, 17, 18 of Fig. 15.
Patent GB-1276880-A (GB)
Title: A writing pen
Inventor: KUHSE KLAUS
IPC: B43K5/18
Filed: 1969-12-05
Abstract: 1276880 Reservoir pens H RIEPE and K H DITZE [trading as RIEPE-WERK] 5 Dec 1969 [18 Dec 1968] 59620/69 Heading B6P A feed bar for a reservoir pen comprises an integral moulding including distribution channels 11 on the surface of the feed bar which in use contacts a nib 3, the channels 11 communicating by way of a feed duct with a chamber 5 formed in the moulding. The chamber 5 houses a drop weight 6 to which is connected a cleaning wire 4. A wire hoop (9, Fig. 1) prevents the drop weight from falling out of the chamber 5. A helical overflow channel (12) is provided.
Patent GB-1256026-A (GB)
Title: Water-soluble glycidyl ethers of glycerine and process for their preparation
Inventor: BERTRAM JAMES LAMBERT
IPC: C08G59/04
Filed: 1969-12-10
Abstract: 1,256,026. Glycidyl ethers of glycerol. DOW CHEMICAL CO. 10 Dec., 1969 [10 Dec., 1968; 21 Aug., 1969], No. 60321/69. Heading C3B. A water-soluble mixture of glycidyl ethers is prepared by: (A) reacting 1 mole of glycerol with 2-2.6 moles of an epoxyalkyl halide (esp. epichlorohydrin) in the presence of a Lewis Acid catalyst. Reaction takes place in at least 20% by wt. of an organic solvent, based on the combined weight of glycerol and solvent, in which glycerol is at least partially soluble and in which the chlorohydrin ether reaction product will form a single phase or in the absence of solvent when the catalyst is SnCl 4 . (B) The product from step (A) is dehydrohalogenated with an alkali, e.g. NaOH, in the presence of at least 50% by wt. of an organic solvent for the glycidyl ether. (C) Salt is separated. (D) Water and organic solvent are removed by distillation to produce a glycidyl ether of glycerol containing < 2% by volume of water-insoluble constituents. Ethylene dichloride is a suitable solvent for steps (A) and (B). Step (A) may be carried out at a temp. from 0‹ C. to the b.p. of the solvent and step (B) at < 110‹ C. The salt formed during (B) may be continuously removed by passing the slurry of salt containing reaction mixture through a filter and returning the filtrate to the reaction vessel. In order to obtain a higher M.W. water-soluble resin a portion of the epoxyalkyl halide used in step (A) may be replaced by a glycidyl ether of glycerol containing > 7.5% by volume of water-insoluble constituents.
Patent GB-1380569-A (GB)
Title: Air motor
IPC: F01B17/00
Filed: 1971-12-29
Abstract: 1380569 Air motors STEWART-WARNER CORP 29 Dec 1971 [30 Dec 1970] 60330/71 Heading F1M An air motor including a valve assembly 58  having a valve 56 movable between opposite positions for transmitting air under pressure selectively to either side of a piston 24 and for exhausting air from the respective opposite sides of the piston comprises a housing 16 closing one end of the piston chamber 12 and having a seating for the valve assembly in the housing enabling the insertion and removal of the assembly from the outside of the housing and fastenings accessible from the outside of the housing for detachably securing the valve assembly including the valve in the seating. A pair of spring-loaded snap action toggle assemblies 62 are provided in the housing 16 for the purpose of ensuring that the shuttle 48 moves the slide valve 56 to opposite limit positions as the piston 24 moves toward the ends of its stroke. As the piston 24 moves upwardly a nut 33 engages the shoulder between the reduced diameter portion 35a and the normal diameter portion of the rod 26 to carry the rod upwardly. A shoulder 42 on the rod then engages a shoulder 46 on the shuttle 48 to move the shuttle upwardly and operate the toggle lever 64.
Patent GB-1315260-A (GB)
Title: Threaded elements
IPC: F16B33/06
Filed: 1971-12-29
Abstract: 1315260 Bolts etc.; pipe couplings OMNITECHNIC GmbH 29 Dec 1971 [28 Dec 1970] 60445/71 Headings F2G and F2H In a pair of shrouded elements to be screwed together in which at least one of the elements 1 or 4 has the thread 2 or 5 coated with a microencapsulated material 6, a covering surface 3 is provided which covers the coating of the threaded element coated with microencapsulated material 6 over a distance of at least one turn in the zone in front of the thread start of the other element when the two are screwed together. In alternative embodiments the covering element may be in the form of a recess in the nut, Fig. 2 (not shown), a tapered lead on the stud, Fig. 4 (not shown), in the nut, Fig. 8 (not shown), or as a sleeve covering the coating on the stud or in nut, Fig. 5 (not shown). In further embodiments the arrangements, when used with pipes, Figs. 5, 9 and 10 (not shown), have a plastics sleeve may be provided with a predetermined easy break section. In yet a further embodiment, Fig. 7, for use with large threads a nut 21 is provided on its end face 22 with a scoop shaped covering body 23 which radially diverges from the root to the crest of the thread. The encapsulated material may be a two-constituent material, a sealing compound or a corrosion preventative.
Patent GB-1362210-A (GB)
Title: Electronic interference suppression device and method of operation thereof
IPC: G01R29/027
Filed: 1971-12-31
Abstract: 1362210 Transistor bi-stable circuits DIXI SA 31 Dec 1971 [22 Jan 1971] 60927/71 Heading H3T  Cascaded master-slave JK flip-flops 1, 2 respond to an input A and its complement (from 3) which appear at the output B, B after two clock pulses CLK, and one or other of NAND gates 4, 5 acts respectively on the preset or clear (PR, CL) inputs asynchronously to hold the outputs B, B steady regardless of interference pulses (7, 9, Fig. 2, not shown). A "0" at PR sets #Q to 0, and a "0" at CL sets Q to 0; PR = 1 and CL = 1 have no effect. Thus if #A, #B are both 1, gate 5 output is 0 and the CL inputs hold Q at 0. If a logic signal 1(8) occurs at A, both gates give outputs of 1 and neither PR nor CL input is operative, and the logic 1 is transmitted through the two flip-flops by successive clock pulses. If a spurious pulse (7 or 9) occurs at A, the gate outputs are again 1 and flip-flop 1 may respond (but not flip-flop 2, so that B is unchanged) when the first clock pulse occurs; but when the spurious pulse ends, gate 4 or 5 gives a 0 to the PR or CL input (depending on whether A is 1 or 0) and resets the state to hold B, B unchanged. The interference pulse must be less than two clock pulses.
Patent GB-1379022-A (GB)
Title: Textile sliver receiving apparatus
IPC: B65H75/16
Filed: 1970-12-31
Abstract: 1379022 Coiling sliver into cans PLATT INTERNATIONAL Ltd 6 March 1972 [31 Dec 1970] 62061/70 Heading D1F Within a sliver can 1 comprising an openended cylinder 2, e.g. of polyvinylechloride, a silver-receiving member 7, e.g. a moulded phenolic resin double-walled disc comprising portions 8 and 9, is freely movable axially to an initial position whereat its upper surface is at the top of the can in readiness for the receipt of sliver deposing from the delivery outlet of a coiling head (not shown) and then, under the weight of accumulating sliver, to a lowermost position whereat it is supported on a lip 6 and the cylinder is filled with sliver. The member 7 is raised by, and lowered under the control of, a helical spring 21 separate from the cam with its ends secured to a supporting plate 23, which bears against the lower face 24 of member 7, and a can-supporting base 22. The top face of member 7 is roughened or has a hard rubber cover 10 to prevent slippage of the initial coils of sliver. The plate 23 (and therefore the fully compressed spring 21) is locked in its lowermost position by a latch mechanism comprising upstanding flexible retaining fingers 30 which close over a portion 26 of a locking plunger 25: the lock is freed by movement of a bar 33 to cause a releasing plunger 31 to force fingers 30 outwardly and clear of engagement with portion 26. The can support shown may be embodied in a turntable accommodating two or more cans, e.g. with a can at load, prime, filling and unloaded stations, and comprising an indexing mechanism which shifts the table successively through an angle of 90‹.
Patent GB-650298-A (GB)
Abstract: 650,298. Photo electric reflectometers. DENINGTON, R. F., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Nov. 29, 1948, No. 30909. [Class 40 (iii)] The colour content of an opaque surface is determined by illuminating the surface normally and arranging photocells symmetrically with respect to the surface to receive light diffused from the surface, each cell being made responsive to each particular part of the spectrum. As shown, light from a lamp, fed from a unit comprising a voltage stabilizer, frequency compensator and a variable output transformer is brought to a parallel beam by a lens 3 and passed through an infrared filter 4 on to the sample which is placed in the aperture 5. Photo-cells 6, 7 and 8 are symmetrically situated so as to receive light diffusely reflected from the surface, each photocell being associated with a different filter. Each photo-cell controls its own mirror galvanometer 9 (only one is shown) and each cell output is indicated on a separate scale. A potentiometer 10 is associated with each instrument to standardize the instrument. A black standard is placed in the aperture and the scale moved to read zero. A white standard is then used and by means of the potentiometers each galvo made to read, say, 100. The sum of the readings for a coloured sample gives a measure of the total light reflected while the individual readings indicate the percentage of each colour. The test surface and photo-cells may all lie in a spherical surface coated internally with a diffusing white coating.