baber/WOPTO huggingface dataset:
Patent GB-1019837-A (GB)
Title: Improvements in and relating to distribution amplifiers for radio frequency signals
IPC: H03H7/48
Filed: 1963-05-08
Abstract: 1,019,837. Distribution amplifiers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. May 8, 1963 [May 11, 1962], No. 18177/63. Heading H4R. In a transistorized distribution amplifier for radio frequency signals the signals are fed from a source, e.g. amplifier 3, through the primary winding of a transformer 6, having bifilar primary and secondary windings, to the input electrode of a transistor stage feeding a first subscriber, the secondary of transformer 6 feeding a subscriber through the primary of a second bifilar wound transformer 9, and a transistor stage 10, each subsequent subscriber being fed, via the primary of a further transformer, from the secondary of the transformer whose primary is included in the feed to the previous subscriber, the arrangement being repeated for as many subscribers as desired. In the described embodiment two sets of transformers are used to provide a balanced arrangement in order to reduce intermodulation and other distortion, the output from the transformer 2 being fed via a phase-splitting transformer 16 to two identical amplifiers 3 and 17 each feeding a number of subscribers via the transformer arrangement described above, the antiphase signals for each subscriber being combined at, the output of the amplifiers 7, 8, and 18, in a transformer 19 before being fed to the subscriber via an impedance matching transformer 20. Amplifiers 3 and 17 and the subscriber amplifiers 18 &c. all include pairs of transistors connected in parallel in order to increase the output current of the stages and so reduce intermodulation distortion, single transistors may be used if transistors of sufficiently high current rating are available.
Patent GB-232090-A (GB)
Title: Improvements in or relating to tobacco pipes
IPC: A24F5/00
Filed: 1924-07-30
Abstract: 232,090. Jones, F. W., and Penney, P. J. July 30, 1924. Tobacco pipes. - In pipes adapted for use with tobacco cartridges enclosed in fire-resisting material, the bowl is formed in two parts H, J, the part H having one or more vertical slots A communicating with an annular space within the bowl and surrounding the cartridge. The effective aperture of the slots A may be controlled by rotatable sleeves in or upon the part. H. The stem is formed with two or more parallel smoke passages communicating with the bowl above, its lowest point, that portion of the bowl beneath the passages serving as a well for condensed products of combustion. The parts H, J are connected by bayonet joints comprising lugs D' on a ring D attached to one part engaging a flanged ring such as F on the other part. A flange, G on the part J separates the joint from the bowl. In a modification, the part h may be replaced by a, skeleton bowl comprising two or more vertical pins connected' at top and bottom bv rings and detachably or permanently connected to the part J.
Patent GB-879599-A (GB)
Title: Commutators for dynamo-electric machines and method of manufacturing
IPC: H01R43/08
Filed: 1959-05-28
Abstract: 879,599. Commutators for dynamo-electric machines. FIAT S.p.A. May 28, 1959 [May 31, 1958; Jan. 19. 1959, No. 18257/59. Class 35. [Also in Group XXII] The segments of a moulded commutator are each provided with a steel claw or bridgeshaped member welded to their inner surfaces to provide locking with the moulded insulating material. In one form, a slotted steel strip 2 is welded or soldered to a copper plate 1 (Fig. 1), the continuous edges of the strip are cut off, the free ends of tongues 2b are bent back towards each other, the copper plate is slotted to leave narrow bridges between the tongues, and the resultant blank bent round to the form shown in Fig. 8 ready for moulding, and finally, the outer surface is turned to separate the segments. In a modification the steel strip has a central continuous part instead of continuous edges, this central part being welded to the copper strip prior to the formation of the slots between the segments. In a further modification, Fig. 17, the steel strip 117 is bridge-shaped and is bronze-coated so that it may be brazed to the inner surfaces 113 of a previously-formed strip of segments by heating. The side edges 1151, 115<SP>11</SP> are then removed and the commutator completed as before. The copper plate may have a beading along one side out of which the commutator risers are formed by milling.
Patent GB-1179915-A (GB)
Title: An improved non-refillable bottle and pourer.
Inventor: KEARNEY PATRICK
IPC: B65D49/02
Filed: 1967-04-20
Abstract: 1,179,915. Non-refillable bottles. P. KEARNEY. 20 April, 1967 [9 Feb., 1967], No. 18310/67. Heading B8D. A non-refillable bottle 12 has bayonet slots with recesses 24 to receive projections 26 on a spout assembly 16 permanently secured to the bottle by adhesive 44 and provided with a oneway valve 52 and air vent passage 56. The end of the spout has a pivoted cap 32 and the assembly is enclosed by a screw-on cover 18. Drain holes 54 are formed in a cross-wall 50. The valve 52 is formed by a curved flap pivoted on a cylindrical body. In a modification, Figs. 5, 6 (not shown), a flap valve is fitted to a hole in the wall 50; or a valve of the type shown in Fig. 2 is mounted on a flange upstanding from the wall (50), Fig. 7 (not shown), or a hemispherical valve member (92), Fig. 8 (not shown), is retained on the wall (50) by means of rods (94) having enlarged heads (98), the rods allowing the member (92) to move under gravity from a position at which it closes a hole (90) in the wall (50) to a position at which the hole is opened. The spout assembly may be of plastics material.
Patent GB-887853-A (GB)
Title: Improvements in or relating to plugs for co-axial cables
Inventor: PARKER STANLEY GORDON
IPC: H01R13/646
Filed: 1959-05-29
Abstract: 887,853. Two-part couplings. ARIEL PRESSINGS Ltd. May 30, 1960 [May 29, 1959], No. 18331/59. Class 38 (1). The outer braiding 9 of a coaxial cable 10 is clamped against an intermediate diameter part 2 of a shell member by a two-part insulating sleeve 7 which is held in position by a split metal sleeve 8. Axial movement of the sleeve relative to the shell member is prevented by pips 12 which engage in holes 11, and the cover of the cable is gripped in the bore 7c of the sleeve. The centre-pin 6 of the plug is carried by an insulating disc 5 and additional contact between the braiding and the sleeve is ensured by pressure of the end 10a of the cover which is stretched over a part 3 of the shell member. The sleeve may be coloured for coding and may have interlocking pips and holes 13, 14. The braiding may be soldered to the shell member.
Patent GB-482415-A (GB)
Title: Improvements in or relating to electrically heated domestic ovens or cookers
IPC: F24C7/08
Filed: 1937-07-02
Abstract: 482,415. Electric cooking-apparatus. FALK, STADELMANN, & CO., Ltd., and CAMPBELL, J. W..July 2, 1937, No. 18399. [Class 39 (iii)] The switches 16, 20, the terminals of the heating-elements, and the connections thereto are arranged behind a removable back panel 22, and the switches are operated through connections 18, 21 by knobs 14, 15 on the front panel. A hot cupboard with a door 12 is arranged above the oven. The hotplates are covered by a lid 13.
Patent GB-961625-A (GB)
Title: Dried flaked fruit and vegetables
Inventor: ROBERTS ROBERT LORENCE
IPC: A23L19/00
Filed: 1962-05-14
Abstract: Fruit and vegetable flakes are formed from the dried product containing less than 10% moisture by grinding the product to 1/2 inch to 1/64 inch diameter particles, warming the particles e.g. by radiant heat, to make them pliable, then rolling the particles between rollers e.g. of hardened steel having 0.001 inch clearance to form a flaked product having a compressed but unruptured cellular structure.  The processes involved in preparing the dried product are those well known in the art. Specification 961,626 is referred to.
Patent GB-295811-A (GB)
Title: Improvements in movement dampers for use on vehicles
IPC: F16F7/06
Filed: 1927-07-12
Abstract: 295,811. Jackson, L. H. July 12, 1927. Vibration-dampers described in Specification 274,663 are provided with dust-excluding means consisting of a cap 12 covering the head of the centre stud and a cork, felt or like packing 4 in a recess in the back plate 2, the edge of the drum being pressed against the packing by means of a spring washer 8. The expanding member 16 is anchored by a link 17 instead of a hook.
Patent GB-1367596-A (GB)
Title: Differntial mechanisms
IPC: F16H48/08
Filed: 1973-04-17
Abstract: 1367596 Differential gearing CLARK EQUIPMENT CO 17 April 1973 18550/73 Heading F2D In a limited-slip differential comprising a rotary input member or planet carrier 24 housing a spider or cross 30 carrying planetary bevel pinions 34 meshing with side wheels 36L (36R, not shown) splined to output shafts 16L (16R), and friction rings 40, 44, 46, a backing member 50L for maintaining the rings in frictional engagement with each other is adjustably mounted in the carrier so that it is movable only in the direction towards the side gear for taking up wear in the rings. As shown, the backing member is mounted in the carrier by screw threads 56 and biased in the rotational sense by a torsion spring 58L. A spring washer 54 maintains the correct depth of mesh between the side wheel and the planetary pinions. In a modification, a greater number of friction rings is provided and a stop ring, bolted to the carrier, is interposed between the friction rings and the side wheel.
Patent GB-1151485-A (GB)
Title: Improvements relating to Vehicle Wheel Suspensions
IPC: B60G7/02
Filed: 1968-04-19
Abstract: 1,151,485. Independent suspensions. DAIMLER-BENZ A.G. 19 April, 1968 [22 April, 19671, No. 18559/68. Heading B7D. In an independent suspension comprising a wheel carrier located by a parallelogram linkage, a pair of rods 7, 8 forming a lower triangular link are both pivotally mounted on a torsionally rigid member 4 which is mounted on a forward body portion 3 so as to be capable of turning against resilient restraint, a line 9 through the pivot points of the rods 7, 8 being vertically spaced from turning axis 10 of the member 4 whereby transverse shocks transmitted by the wheel to the rods 7, 8 are absorbed b turning of the member 4. The member 4 is of a square hollow section connected to the body with provision for a predetermined degree of turning movement by rubber bearing elements in supports 1, 2. The rods 7, 8 are pivotally connected at one end to bearing brackets 5, 6 on the member 4 and at the other end to the king post 12 by a common ball joint 11.
Patent GB-1491662-A (GB)
Title: Speech detection in a signal channel
IPC: G10L15/04
Filed: 1976-05-06
Abstract: 1491662 Speech detectors TELETTRA-LABORATORI DI TELEFONIA ELETTRONICA E RADIO SpA 6 May 1976 [3 July 1975] 18568/76 Heading H4R A signal is determined as being speech when its mean power measured over a certain time period either exceeds an upper threshold or only exceeds a lower threshold but exceeds a predetermined modulation depth. As shown, the mean power of input analogue or digital signals f is evaluated in STPE by rectifiers or squaring circuits followed by low pass filter integrators having rectangular or exponentially decaying impulse responses. The power level pe(t) is compared in PC3 and PC4 with lower and upper thresholds ptl and ptm to produce an affirmative output AT if pe(t)>ptm and a negative output if pe(t) <ptl. The level at a previous time period, derived from 10-100 msec. delay DL is multiplied by K and 1/K' and compared in PC1, PC2 with the current power level pe(t) to determine the modulation depth. An output from PC or PC2 indicates that the predetermined modulation depth is exceeded and the output passes to the final OR-gate for logical combination with the output of PC3 indicating the lower power level has been exceeded. In a modification, the modulation depth is evaluated by comparison of mean power levels over different time periods determined by parallel mean power evaluators having different time constants.
Patent GB-204429-A (GB)
Title: Improved transparent or other sheath or protector for the edges of cards, sheets of paper, folders or the like
IPC: B42F19/00
Filed: 1922-07-07
Abstract: 204,429. Wrigley, H. W., and Ridgway, J. A. July 7, 1922. Sheets and cards.-A protecting sheath A for the edges of cards D, sheets of paper, &c., which is attached by means of adhesive patches B placed over holes a in the sheath, may be used in connection with index and record cards. The sheaths may form pockets to carry auxiliary sheets, tickets, and cards.
Patent GB-911149-A (GB)
Title: Improvements in or relating to coin boxes
Inventor: BIGGS FREDERICK JOHN
IPC: G07F9/06
Filed: 1959-06-01
Abstract: 911,149. Coin boxes for coin-freed apparatus. UNITED GAS INDUSTRIES Ltd. June 1, 1960 [June 1, 1959], No. 18654/59. Class 27. The removable coin box 1 of a coin-freed apparatus has a pivoted spring-loaded shutter 6 for closing the coin slot 3 and has a spring- loaded latch 12 that holds the shutter in open position before insertion in the apparatus but co-operates with a trigger 5 fixed to the apparatus so that the shutter is cocked to close under the action of its spring when the box is next removed from the apparatus. When a box has been emptied of its contents after opening a door 2 which is locked by a padlock through a hasp 24, the shutter is moved to the open position by a handle 9 and a step 16 on the latch engages behind a lug 10 on the shutter to hold the latter open. On insertion of the box into the apparatus, the trigger 5 enters the box through a hole 4 and its lower surface 27 engages a cam surface 18 on the latch to depress it and release it from the lug 10; the deep wall 28 on the trigger now co-operates with another lug 11 on the shutter to hold it open. On subsequent removal of the box, the reduced portion 29 of the trigger releases the lug 11 and the shutter swings to closed position. If the box is inserted without the shutter being moved to the open position, the cam 18 is above the surface 27 and prevents full insertion of the box. If the shutter is prevented from closing by a blocking body placed in the coin slot, removal of the box may be prevented by the provision of a second step 19 on the latch to co-operate with a lug 30 on the trigger. In a modification. Fig. 8, the shutter 45 and latch 37 are mounted within a double wall on a pivoted door 35 forming the top of the coin box and securable to it by a cylinder lock 38. The lugs 47 and 46 correspond to the lugs 10 and 11 of the previous embodiment and the lug 48 to the handle 9. The trigger 5 may be of pressed sheet metal and be secured to a cradle formed with flanges to provide a slideway for slides 26 on the coin box.
Patent GB-788062-A (GB)
Title: Improvements in or relating to polyurethane resin moulding materials
Inventor: CORNWELL ANTHONY CHARLES
IPC: C08J9/00
Filed: 1954-06-25
Abstract: Moulding material is made by mixing a foamable polyesterurethane resin with a fibrous or powdered filler in such proportions as to form a dough which is capable of being handled and placed manually in a mould before any appreciable curing or during curing of the resin. The polyesterurethane is made by reacting a polyisocyanate (e.g. m-toluylene diisocyanate) with a polyester resin derived from a polyhydric alcohol (e.g. glycerol) and a mixture of succinic and sebacic acids (with or without phthalic acid).  Specified fillers are kaolin, zinc oxide, mixtures thereof, and precipitated chalk. Immediately after mixing the resin and filler, the resulting dough may be cooled either externally or by adding solid carbon dioxide. The cooled material may be ground into powdered form.  Specifications 719,539, 736,953 and 755,931 are referred to.
Patent GB-697933-A (GB)
Title: System of airborne conductor measurements
IPC: G01V3/165
Filed: 1951-08-08
Abstract: 697,933. Geophysical surveying. INTERNATIONAL NICKEL CO. OF CANADA, Ltd. Aug. 8, 1951 [Aug. 11, 1950], No. 18701/51. Class 37. Airborne apparatus for locating deposits of conductive minerals, e.g. heavy sulphide ores, comprises a transmitter unit located in an aircraft for creating a plurality of electromagnetic fields of different frequencies, a receiving unit located in a " bomb " trailed by the aircraft and connected via the tow cable to an indicating unit in the aircraft, whereby variations in the electromagnetic fields due to deposits of conductive and magnetic minerals may be indicated, measured and analysed as the aircraft moves in a known manner over the investigation area. The transmitter (Fig. 2) consists of two generators 15, 16 producing A.C. at frequencies F1, F2 respectively, preferably within the range 250-5000 cycles per second, feeding two mutually perpendicular transmitting coils 5, 6 respectively. The frequencies are stabilized by a control 18, and the ratio of the amplitudes of the output is maintained by a control 17. The receiver (Fig. 3) consists of two mutually perpendicular coils 7, 8 connected to filters 19, 20 which pass F1 from coil 7 and F2 from coil 8 into a common amplifier 21, to be separated again by filters 24, 25 and their amplitudes compared by differential detectors 26, 27. The output is then amplified at 27<SP>1</SP> and taken to the indicator, comprising a band-pass filter 28 (Fig. 4), amplifier 29 and recorder 30. The receiver unit also contains a third coil 22, mutually perpendicular to coils 7, 8, whose pick-up is amplified, rectified, and used to maintain the relative angular positions of the transmitting and receiving coils through a servomechanism 34. In a modification, the coils 5, 6, 7, 8 are parallel, or may be only one coil at the transmitter and receiver, fed with A:C. 'at the frequencies F1, F2 at the transmitter, the mineral deposits being determined by its effect on the electromagnetic field at each frequency. A mathematical analysis is provided showing the effects of deposits of different resistivity at different transmitting frequencies, and how the signal in the additional receiving coil 22 may be used to correct for relative angular motion between the aircraft and bomb.
Patent GB-698669-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L9/06
Filed: 1952-07-24
Abstract: 698,669. Girdles for brushes. HOOVER, Ltd. July 24, 1952 [July 24, 1951], No. 18723/52. Class 19. In a brushing' tool for a suction cleaner the bristles which surround the suction nozzle are themselves surrounded by a resilient annular member which is adjustable in position to vary the free length of the bristles. The tool shown comprises an inner tube 19 secured to a cap 11, holding between them a brush ring 25. A rubber ring 31 holds the bristles tightly to the tube and may be rolled downwards to shorten the effective length of the bristles. The rubber ring is moulded such that the inner surface is under greater tension than the outside and accordingly when the ring is rolled downwards it is only stable when the inner surface returns to the inside. A rubber strip 21 protects the lower edge of the tube. In an alternative embodiment (Fig. 4) the brush ring 41 is held in position by a rubber cap 46 having a skirt 49 terminating in a ring 55. The ring may be rolled upwards with the skirt to provide a greater effective bristle length.
Patent GB-598574-A (GB)
Title: Improvements in or relating to filtering devices
IPC: B01D29/00
Filed: 1945-07-23
Abstract: 598,574. Filters. ZWICKY, J. F., and ZWICKY, A. A., (trading as ZWICKY & CO., J. F.)..Tuly 23, 1940, No. 18765. [Class 46] A filter comprises two concentrically-arranged tubular bodies 1, 2, Fig. 2, closed at one end by a removable closure plate 6 which carries a filtering cage 12, the fluid to be filtered entering the body 1 through a tubular inlet 3 and the filtered liquid being discharged through a tubular outlet 4. The tube 1, which is perforated, may be provided with baffles 16 to trap coarse, solid particles, or, in the case of petrol filtration, to separate water from the petrol. The tube may be provided with cartridges of wire wool, kieselguhr or silica gel. In a modification shown in Fig. 3, the flow of liquid is from the outer tube 2 to the inner tube 1, and the inner tube is connected to a reservoir 17 into which some of the filtered liquid flows. When the supply and discharge ports are closed and a drain plug 20 is opened, the liquid in reservoir 17 under the pressure of air confined above it flows back through the filter cage 12 and thus cleanses it. The reservoir may have connections for a liquid or gas under pressure, or the pressure in the reservoir may be provided by means of a spring-pressed piston.
Patent GB-675850-A (GB)
Title: Improvements in marine propellers with variable pitch blades
IPC: B63H3/04
Filed: 1949-03-24
Abstract: 675,850. Variable-pitch propellers. LIAAEN, N. J. March 24, 1949, No. 18823/51. Divided out of 675,767. Class 114. In a propeller in which the pitch is varied by a rod 4 sliding inside the propeller shaft, the consequential variation in pressure in the oil filling the hub is reduced by the end of the rod moving in a sleeve 8. This sleeve contains air which is maintained at atmospheric pressure by a bore 9 in the sliding rod.
Patent GB-934565-A (GB)
Title: Improvements in sealing devices for pistons and the like
Inventor: CROSS ROLAND CLAUDE
IPC: F16J9/06
Filed: 1962-05-16
Abstract: 934,565. Piston packing; stuffing-box substitutes. CROSS MANUFACTURING CO. (1938) Ltd. July 6, 1962 [May 16, 1962], No. 18828/62. Classes 122 (1) and 122 (5). Packing between inner and outer cylindrical members 1, 4 comprises a split or divided metal ring 3 housed in a groove in one of the members and urged radially against the other by a series of circumferentially extending spring fingers 5 bearing against the bottom of the groove and each forming one leg of an L-shaped insert, the other leg 6 of which is fixed in a hole in the peripheral surface of the ring. As shown in Figs. 1 and 4, the ring is formed by two semi-circular parts and is housed in a groove 2 in the outer member 1. In a modification as a piston packing the ring is housed in a groove in the inner member 4.
Patent GB-1056546-A (GB)
Title: New quaternary ammonium compounds and preparations for combating phytopathogenic microorganisms containing them
IPC: A01N59/12
Filed: 1964-05-06
Abstract: The invention comprises a reaction product in an aqueous solution of (a) a quaternary ammonium compound with (b) a compound of iodine with an iodide, in the approximate molecular ratio of a : b = 1 : 1; e.g. (a) may be R1R2R3R4N + I3-, where R1 is C1- 18 alkyl or a radical <FORM:1056546/C2/1> where A is C1- 18 alkyl and n and m are each 1-4; R2 and R3 are each C1- 18 alkyl or hydroxyalkyl, and R4 is aralkyl; and (b) may be NaI3 or KI3.  The resulting quaternary ammonium triiodides are active against phytopathogenic microorganisms (see Divisions A2 and A5).ALSO:Seeds are protected against phytopathogenic micro organisms by treatment with a quarterndry organicsubstituted ammonium triodide (see Division C2) which may be applied in the form of a powder, solution, suspension, emulsion or paste comprising one or more of the following: a dispersant, an adhesive, a fertilizer, a pesticide, a powdered solid, e.g. inert, carrier (see Division A5). The solution, suspension, emulsion or paste may comprise water or an organic liquid, e.g. an organic solvent.ALSO:Compositions for combatting phytopathogenic microorganisms comprise a quarternary ammonium triiodide (see Division C2) in association with a suitable carrier, e.g. one or more of a solvent, dispersant, adhesive, fertilizer or further pesticide; examples of these are given.  The compositions may be pastes, powders, emulsions, suspensions, solutions or sprays.