baber/WOPTO huggingface dataset:
Patent GB-1198015-A (GB)
Title: CW Interference Reduction Network for a Pulse Communications Receiver
Inventor: CULLIS ROBERT NICHOLAS
IPC: H03G3/20
Filed: 1968-11-04
Abstract: 1,198,015. Interference suppression; automatic gain control. MARTIN MARIETTA CORP. 4 Nov.. 1968, No. 52248/68. Headings H3Q and H4L. Air interference reduction arrangement for a pulse receiver has A.G.C. reducing the receiver gain in the presence of C.W. interference and means for increasing the amplitude of the demodulated pulses to compensate for the reduction in pulse amplitude produced by the A.G.C. In one embodiment, the receiver comprises a variable gain I.F. amplifier 10 and a detector 12, the output of which at 13 comprises pulses with a superimposed D.C. from the rectified C.W. interference; this is applied to a pulse-cancelling network comprising pulse inverter 16 and summation network 18 whereby at terminal 19 a D.C. voltage is produced dependent only on the C.W. interference. The output at terminal 13 is also applied to a variable gain pulse amplifier 14 amplifying only A.C. the output of which comprises only pulses. These pulses are applied to a circuit which compensates for any pulse inversion produced by the C.W. interference; the circuit comprises a detector 24 for positive i.e. uninverted pulses and a detector 26 for negative, i.e. inverted pulses, the output from the latter being inverted in inverter 28 and combined with the output from the former in combiner 30. The output at terminal 31 from combiner 30 comprises the output of the arrangement; it is also applied to an integrator 32 producing a D.C. output proportional to pulse amplitude, which is amplified in D.C. amplifier 34 and applied to terminal 33. The output at terminal 19 is also amplified, in D.C. amplifier 20 and applied to terminal 21. An OR gate 22 applies the greater of the voltages at terminals 21, 33 over line 9 to control i.e. reduce the gain of I.F. amplifier 10. The voltages at terminals 21, 33 are also applied to an AND gate 36 whereby when the voltage on terminal 21 exceeds that on terminal 33, the voltage at the latter terminal is applied to variable gain pulse amplifier 14 so as to increase the gain thereof. In an alternative embodiment, the variable gain pulse amplifier is omitted and terminals 13, 15 connected together; the combiner 30 feeds the output terminal via a variable threshold detector, the threshold level of which is determined by the output from AND gate 36 (Fig. 4, not shown).
Patent GB-1096619-A (GB)
Title: Color diffusion transfer process and negative material thereof
Inventor: VIRO FELIX
IPC: G03C8/08
Filed: 1964-12-23
Abstract: 1 - Phenyl - 3 - (4 - phenyl butyramido) - 5-pyrazolone is prepared by reacting 4-phenyl butyric acid with thionyl chloride and reacting the product with 1-phenyl-3-amino-5-pyrazolone. 1 - (41 - Sulphon morpholido) - phenyl - 3-(a  - phenyl) - butyramido - 5 - pyrazolone and 1 - phenyl - 3 - (a  - phenyl - butyramido) - 5-pyrazolone are prepared in a similar manner starting from a -phenyl butyric acid. 3-Benzoyl-acetamido-4-(N-methyl benzene sulphonamido)-toluene is prepared by reacting p-toluidine with benzene sulphonyl chloride, nitrating with nitric acid to give 3-nitro-4-benzene-sulphonamido toluene, N-methylating with dimethyl sulphate, reduction of the nitro group with iron/HCl and reacting of the product with ethyl benzoyl acetate.  1-Benzoyl acetamido-2-(N-methyl-p-toluene sulphonamido)-benzene is prepared in a similar manner starting from p-toluene-sulphonamido benzene.
Patent GB-1369137-A (GB)
Title: Article revealing cartons
IPC: B65D85/32
Filed: 1972-11-15
Abstract: 1369137 Egg cartons BRODRENE HARTMANN AB 15 Nov 1972 [17 Nov 1971] 52740/72 Heading B8P An egg carton comprises a container section (1) having two rows of egg compartments and upwardly extending projections 5 between the rows, and a hinged cover section 2 comprising two gable portions 6 and a recessed portion 7 in which are formed apertures 10 through which parts of the eggs 11 project, the portion 7 having a groove 9 with denesting ribs 15, 16 formed therein, the groove resting on the projections 5 when the carton is closed. The denesting ribs 15 are formed in deeper portions 9a of the groove 9 and space nested lid sections by the height of the rib. If a smaller spacing is required only one rib 16 of a height equal to the depth of the groove 9 is provided. The end walls of the container and cover sections have denesting L-shaped ribs 14. A flap (17) hinged to the container section (1) carries locking projections 18 which engage apertures 19 in the cover section 2. The carton is of fibre pulp which is suction moulded.
Patent GB-1243128-A (GB)
Title: Improvements in or relating to pulse modulators
Inventor: BJORKE MERLIN D
IPC: H03K3/64
Filed: 1969-10-29
Abstract: 1,243,128. Pulse generators. HONEYWELL Inc. 29 Oct., 1969 [30 Oct., 1968], No. 52870/69. Heading H3P. [Also in Division H2] In a double pulse generator, an input pulse is applied to a saturable transformer 16 connected to parallel energy storage circuits 18-22 and a diode 24, and a double output pulse is taken from a transformer 26. An input pulse is applied by triggering a switch 10. The input pulse charges capacitors 18, 22 via diode 24 until the pulse reaches its peak value, when the voltage induced in the secondary winding of transformer 16 is reduced. Capacitor 18 then discharges and, together with the voltage induced by the trailing edge of the input pulse, forces the transformer 16 into saturation to produce an output pulse. After a time equal to the square root of the product of inductance 20 and capacitor 22, together with any stray reactances, capacitor 22 discharges again, forcing transformer 16 into saturation to produce the second output pulse. Capacitor 22 and/or inductor 20 may be variable.
Patent GB-1377653-A (GB)
Title: Method for producing the base of a semi-conductor device
IPC: H01L21/48
Filed: 1971-11-16
Abstract: 1377653 Stubs for semi-conductors; forging; extruding Y SATO 16 Nov 1971 [16 Nov 1970 29 Jan 1971] 53233/71 Headings B3A B3H and B3P [Also in Division H1] A method of producing a base for a semiconductor pellet 12, Fig. 6, comprises producing a composite or clad metal including respective first and second layers 2, 3, Fig. 3, wherein the first layer has a high electrical and thermal conductivity and the second layer is suitable for electrical resistance welding, punching said composite to form workpieces 4 and deforming each workpiece to form a protrusion 8 in the surface of the second layer. Each of the workpieces has a circular configuration and is extruded to form a stud 7 between dies 5, 6. The lower die 5 has an elongated cylindrical cavity 5b extending from a central hexagonal recess 5a and serving to form a stem 10. Annular recesses 6b, 6c in the upper die form respectively a ring portion 9 to allow projection-welding of a cap flange 14a of the device 11 and for an annular recess (8a), Figs. 4, 5 (not shown), to prevent the layer 3 from intruding the extruded portion 8. This layer is cut off from portion 8 so as to expose layer 2 on which the pellet 12 may be housed. The stem is thread-rolled to allow the device 11 to be threaded into a grounded heatsink. Alternatively, the stud 7 may be formed from a composite wherein removal of layer 3 is not necessary since layer (3<SP>1</SP>), Fig. 9 (not shown), is of high ductility and forms a thin layer upon extrusion which allows adequate conduction of heat from the pellet to the layer (2<SP>1</SP>). In another embodiment (7<SP>11</SP>), Fig. 10 (not shown), there is no stem 10 and lead wire 13 is then spot welded to the layer 2. Also, a flange may be provided on the base to allow connection to a heat sink, and hermetically-sealed terminals 15 may extend through the body of the base instead of the cap 14. The layer 2 may be formed of copper, aluminium or an alloy thereof, and layer 3 of nickel, iron, ferroalloy, or cupronickel alloy; the cap 14 may be formed of iron or an alloy thereof.
Patent GB-1496347-A (GB)
Title: Decomposition and reaction of polymers and/or oligomers
IPC: C07C17/367
Filed: 1974-12-10
Abstract: 1496347 Radiation decomposition of polymers or oligomers AKADEMIE DER WISSENSCHAFTEN DER DDR 10 Dec 1974 53330/74 Heading C2C A process for the decomposition of polymers and/or oligomers by irradiation with ionizing rays (e.g. electron beams), and optional reaction of the intermediate fission products with reactants, to obtain products having substantially uniform chain length is effected by irradiating polymers and/or oligomers of different molecular weight in a turbulent liquid bed, one or more components of the irradiated material being liquid under the selected conditions and the decomposition and optional reaction being carried out in the presence of one or more gas currents. The reactant, e.g. oxygen, may be incorporated in the gas current. In examples (1) the starting material is a mixture of polytetrafluoroethylene (PTFE) and partly decomposed PTFE or tetrafluoroethylene oligomers and the products are n-perfluoro-paraffins and straight-chained perfluorinated olefins in the absence of oxygen or carbonyl fluoride and nperfluorocarboxylic acid fluorides in the presence of oxygen; and (2) the starting material is a mixture of partly decomposed tetrafluoroethylene/hexafluoropropylene copolymer and PTFE and the products (in the presence of air) are straight-chained perfluorocarboxylic acid fluorides and perfluorocarboxylic acid fluorides having methyl side chains.
Patent GB-1338810-A (GB)
Title: Grafted hollow fibres
IPC: D01F/
Filed: 1971-11-17
Abstract: 1338810 Phosphoric acid PROGIL 17 Nov 1971 [7 Dec 1970] 53383/71 Heading C1A [Also in Divisions B1 and C3] Phosphoric acid manufactured by the wet process is purified by passage through a countercurrent dialyser comprising a bundle of hollow polyethylene fibres grafted with 2-methyl-5- vinylpyridine.
Patent GB-1329435-A (GB)
Title: Method and apparatus for constructing a road surface structure  comprising a sprayed insulation of rigid polyurethane foam
IPC: E01C3/06
Filed: 1970-11-10
Abstract: 1329435 Insulated road surfaces SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 10 Nov 1970 [12 Nov 1969] 53419/70 Addition to 1180689 Heading E1G In a method and apparatus for constructing an insulated road surface on a prepared and levelled road bed, the bed is covered successively with (a) a layer of bituminous material - e.g. by hot-spray apparatus 3; (b) a layer of sheet material - e.g. paper, P.V.C. or glass fibre mat 5 from a reel 4; (c) a sprayed insulation layer of rigid polyurethane foam - e.g. by liquid spray nozzles 8; A poured concrete or bituminous surface top layer is subsequently applied by undisclosed means. The apparatus shown is driven by endless tracks 1, the sheet material 5 being applied by a pressure roller 7. The front and rear spray nozzles 3, 8 are supplied from tanks not shown and may be fixed on the apparatus or may reciprocate transversely to the direction of travel. In a modification, Fig. 2 (not shown), a trailer carrying a roll of sheet material, a pressure roller (17) and rear polyurethane spray apparatus (18) is articulated to a vehicle provided with four fixed bitumen-spray nozzles (13).
Patent GB-1210508-A (GB)
Title: Water soluble tin (ii) chelates
Inventor: LANGER HORST GUNTER
IPC: C07C31/28
Filed: 1967-11-27
Abstract: 1,210,508. Tin (II) chelates. DOW CHEMICAL CORP. 27 Nov., 1967, No. 83891/67. Heading C2C. Novel water-soluble fluorostannous chelates of N-containing chelating agents having as chelating groups (1) a hydroxyalkyl group and (2) a carboxyalkyl group, the N-atom and the two chelating groups being so positioned in the structure that they form with the fluorostannous component of the chelate a 6 to 10 membered ring, are prepared by mixing in aqueous solution, under an inert atmosphere, stannous fluoride and the requisite chelating agent. The free carboxylic acid groups may be at least partially neutralized e.g. a Ca salt of pH 5 to 8. The following chelates are exemplifled.
Patent GB-1155338-A (GB)
Title: Heat Exchanger.
IPC: F28C3/04
Filed: 1967-11-29
Abstract: 1,155,338. Heat exchangers. GEBR. BOHLER & CO. A.G. 29 Nov., 1967 [29 Nov., 1966], No. 54313/67. Headings F4K and F4S. A heat exchanger comprises an external pipe 5 reinforced with an inner, slit pipe 11 and a concentric and radially-spaced inner pipe 1 through which a hotter medium is conveyed to a mixing chamber 3 to which the cooler medium is admitted from an inlet 2 in the pipe 5. The mixture passes to an outlet 4 in countercurrent flow to the hotter medium over the outer surface of the pipe 1 which forms a thermally conductive wall. The wall is formed by at least two concentric pipes, each of which having a slit to absorb thermal expansion which may be longitudinal or helical and so positioned as to be out of register with each other. A coil spring 10 retains the sleeve 11 in the region of the outlet zone 9 of the mixing chamber 3 to protect the external pipe 5 from localized thermal shocks from the mixing process.
Patent GB-1334794-A (GB)
Title: Timber structural members
IPC: E04C3/14
Filed: 1970-11-16
Abstract: 1334794 Timber beams COBETON AG 16 Nov 1970 [18 Nov 1969] 54350/70 Heading EIW A timber beam for supporting, e.g. floor formwork, has flanges each formed from two laminae L2a and L2i glued together along their length, the outer lamina L2a being of a wood of greater strength than that of the inner lamina, and the web 1, or the struts (in a lattice beam, not shown) being connected to the flanges via tenons Z1 and mortices ZA2. The outer lamina may have tenons (ZA2'), Fig. 2 (not shown) which engage in mortices along the inner lamina. The web tenons Z1 may extend into the outer lamina, Fig. 3, (not shown). The web is preferably solid and laminated (as shown), but a lattice beam may be constructed in a similar way. The outer lamina constitutes at least one third of thickness of each flange, and may be of African red hardwood, whilst the inner lamina may be of spruce or fir. The upper outer lamina may be cambered outwardly, and at U, in three linear portions, or in an arc.
Patent GB-1242125-A (GB)
Title: Apparatus for creeling tow
IPC: D01G99/00
Filed: 1968-11-18
Abstract: 1,242,125. Feeding and stapling fibres. BURLINGTON INDUSTRIES Inc. 18 Nov., 1968 [28 Nov., 1967], No. 54649/69. Heading D1F. In apparatus for "creeling" filamentary low or "sliver yarn" which is readily threaded therethrough and maintained free from twisting, tow T supplied from containers or cans 14 passes through guides 34 into the creel, is flattened into strand at 16 and then either spread or condensed to a predetermined width at 18, turned to a path parallel to the axis of the apparatus frame at a turning station 20 and fed from a discharge station D to a processing apparatus such as a Pacific Converter whereby the filaments of the strand are cut or broken into fibres of uniform staple length which are drafted into slivers and coiled in cans in readiness for further processing. At 18 a spreader-condenser bar 36 is rotatable about its longitudinal axis so that tow engaged by an arcuate or curved portion 44 is spread or condensed according to whether it passes over the convex or concave portion. At 16, Figs. 8 and 9, guide bars 56 and 58 straighten and flatten each tow into a generally flat strand and brake it sufficiently to pull out crimps or like deformations. If the tow supply fails or the sliver breaks, the bar 58, pivoted to an electrically insulated bar 60, drops against earthed bar 56 whereby a relay is energised to interrupt the circuit to the driving motor of the converter, which is thus stopped, and when the supply is renewed the motor circuit is restored. If the converter stops, operating lever 84 is automatically and pneumatically moved upwardly thereby rotating bar 60 carrying with it the lever arm 90 which in turn bears down on bar 58 which thus clamps the tow tightly to the bar 56. Air pressure is maintained on pneumatic drag brake assembly 142 so that the rolls thereof will not turn and thus the tow between these rolls and station 16 is maintained taut in readiness for restarting the apparatus.
Patent GB-1176547-A (GB)
Title: Herbicides
Inventor: BARRIER GEORGE EDGAR
IPC: A01N37/22
Filed: 1967-12-04
Abstract: 1,176,547. Herbicide containing mixed active ingredients. E.I. DU PONT DE NEMOURS & CO. 15 Nov., 1968 [4 Dec., 1967], No. 55096/67. Heading A5E. A selective herbicidal composition, suitable for application to a locus in which corn, soybean or sorghum is growing, comprises a mixture of 2-chloro-2', 6'-diethyl-N-methoxymethylacetanilide with 3 (3, 4-dichlorophenyl)- 1-methoxy-1-methyl urea or 3(p-chlorophenyl)- 1-methoxy-1-methylurea.
Patent GB-1336623-A (GB)
Title: Smoking composition
IPC: A24B15/10
Filed: 1971-11-30
Abstract: 1336623 Tobacco composition LIGGETT & MYERS Inc 30 Nov 1971 [3 Dec 1970] 55597/71 Heading A2C The amount of polycyclic aromatic compounds produced during the smoking of tobacco is reduced catalytically by the addition of finely divided zinc oxide to the tobacco. In an example, a reconstituted tobacco sheet was made from a mixture containing zinc oxide, ground tobacco, α-cellulose fibres, sodium carboxymethyl cellulose, glycerine, propylene glycol and water.
Patent GB-556121-A (GB)
IPC: C06F1/20
Abstract: 556,121. Match-making machines. LANGHAM, C. A., and MELLAND, F. N. S. March 17, 1942, No. 3520. [Class 50] In a machine for making match cards and described generally in Specification 556,120 the means for separating or staggering the splints after they have been cut by a multiple knife device K comprises a grooved stock holder 5 which is mounted on a reciprocating carriage 2, which, on its forward movement, feeds the stock to the knives and the cut strip to a downwardly movable presser bar 10. This bar is advanced with the feed plate 1 by engagement of an abutment 8 with the guide block 11, and is depressed by engagement of a cam 21 with a roller 20 on the bar which is raised to its inoperative position by springs 14. A narrow bar or slide 23 mounted on the front face of the presser bar 10 is urged downwardly by springs 24, and a toothed bar 25 sliding vertically against the action of springs 27 is mounted beneath the forward end of the stock holder 5 and is raised by rollers 28 lifted by cams 29 so that its teeth close the forward ends of the gaps between the ribs of the stock holder 5. Thus, the stock is held by its uncut portion between the slide 23 and the lower supporting surface constituted by the stock holder 5 and interspaced teeth of the bar 25 until the teeth of the presser bar, co-operating with the ribs of the stock holder complete their work by depressing alternate match splints into the grooves of the stock holder as shown in Fig. 4. The cutter is of the kind described in Specification 556,122.
Patent GB-1443017-A (GB)
Title: Punch balls
IPC: A63B69/20
Filed: 1973-11-30
Abstract: 1443017 Punch balls METTOY CO Ltd 28 Nov 1974 [30 Nov 1973] 55731/73 Heading A6M A punch-ball comprises a stem part 1 which carries a ball (not shown) and is connected to a base part 3 by a helical coil spring 2. The spring has a free length between its ends which permits oscillation of the stem about transverse horizontal axes; this free length being adjustable to vary the natural frequency of the oscillations. In one embodiment the lower end portion of the stem 1 is assembled telescopically with the coil spring and is adjustably secured thereto by clamping means 4, 5. Alternatively the base part may be assembled telescopically with the spring and may be adjustably secured thereto by similar clamping means. The spring may have a constant coil diameter, Fig. 1, or may have a lower portion of outwardly divergent form, Fig. 2 (not shown), the lowermost coil of the spring being attached to a base board (8) by a clamping ring (9).
Patent GB-1490373-A (GB)
Title: Mirror assembly
IPC: A47G1/02
Filed: 1974-12-24
Abstract: 1490373 Mirrors YUN-TE CHANG 24 Dec 1974 55763/74 Heading A4V Fogging of a bathroom mirror 1 is prevented by maintaining its temperature above the clear point by means of a water heater 30, thermally connected to the rear mirror surface by a heat distributing conductive sheet 21. The heater comprises a hot water pipe 31 or thin hot water tank thermally connected to the mirror 1 by the heat conductive sheet 21. The pipe is laid in grooves in a thermal insulator 22.
Patent GB-1431150-A (GB)
Title: Game board
IPC: A63F3/02
Filed: 1974-12-24
Abstract: 1431150 Game board T MITSUO 24 Dec 1974 [20 June 1974] 55820/74 Heading A6H A game board comprises an integrallyformed raised support 3 at its edges and a pivoting semi-circular cylindrical cover 19 forming, with a recess 9, a container for circular playing pieces (11). Sixtyfour identical pieces are provided with a different colour on each side. The playing surface is either etched or formed of a printed sheet.
Patent GB-1274119-A (GB)
Title: Improvements in or relating to display apparatus for exhibiting different coloured tufts of fibre
IPC: A47F5/02
Filed: 1970-11-24
Abstract: 1,274,119. Display stands. EDUARD MATHAI G.m.b.H. & CO. K.G. Nov.24, 1970 [Dec. 13, 1969], No. 55884/70. Heading A4T. Display apparatus for exhibiting different coloured tufts 2 of fibre, e.g. hair, comprises a carrier 1 having a plurality of apertures 3 therein, a fibre tuft 2 arranged in and/or confronting each aperture, a light source 4 arranged on one side of the carrier, and a translucent screen 6 provided with sections of different colour arranged between the light source and the carrier, the carrier and the screen being relatively movable. The carrier and screen may be coaxial, and the light source may be, as shown, elongate and extend along the common axis. The sections of the screen may correspond to different hair colours, and the tufts to different dyes so that the effects of the dyes can be seen on different colours of hair.
Patent GB-1456546-A (GB)
Title: Brushless dc motors
IPC: H02P6/08
Filed: 1973-12-03
Abstract: 1456546 Brushless DC motors PAPSTMOTOREN KG 3 Dec 1973 [8 Dec 1972] 55999/73 Heading H2A A brushless D.C. motor comprises a permanent magnet rotor 26 and a stator winding 11 intermittently energized by a semiconductor switching device 36 controlled by a transducer 32 sensing rotor position, the stator being constructed to provide a reluctance torque on the rotor at selected angular positions of the rotor and the stator including a permanent magnet 27 producing a further torque on the rotor, the resultant torque on the rotor being substantially uniform, i.e. free from gaps. The rotor of the axial air gap motor shown comprises two permanent magnet rings 18, 19 disposed on opposite sides of an insulating plate 10 carrying the winding 11 and permanent magnet 27. The transducer 32 is a Hall plate and the reluctance torque is provided by ferromagnetic members 45, 46, mounted on plate 10. The members 45, 46, may be replaced by a series of soft iron pins. There may be a further stator winding 87, Fig. 4 (not shown) connected in series with the first winding (86) and there may be several permanent magnets (94-99) spaced around the stator. In cylindrical air gap embodiments, Figs. 9, 15 (not shown) having an external rotor and a salient pole stator, the reluctance torque is provided by constructing the stator pole shoes so that the air gap is non-uniform, there being permanent magnets (e.g. 137, Fig. 9) mounted in recesses in the pole faces. There may be two independently energizable stator windings, one producing a smaller torque than the other and being energized to supplement the torque produced by the stator permanent magnet. The rotor position may be sensed by a coil (223, Fig. 15) mounted in slots in the stator salient poles.
Patent GB-1375004-A (GB)
IPC: A61Q19/08
Filed: 1971-12-02
Abstract: 1375004 Cosmetic preparations CHEMISCHES LABORATORIUM DR KURT RICHTER GmbH 2 Dec 1971 [30 Dec 1970] 56077/ 71 Heading A5B A cosmetic preparation comprises native, untreated soluble collagen, retaining its natural, substantially non-crosslinked collagen structure and directly extracted without hydrolysis from young and/or embryonal animal skin, together with one or more diluents or excipients which do not affect the structure of the soluble collagen.