baber/WOPTO huggingface dataset:
Patent GB-1223822-A (GB)
Title: Control systems for electrically powered vehicles
IPC: B60L15/20
Filed: 1969-01-29
Abstract: 1,223,822. Control of D.C. motors. CLARK EQUIPMENT CO. 29 Jan., 1969 [12 Feb., 1968], No. 4846/69. Heading H2J. [Also in Division G3] In an automatic speed control system for an electrically powered vehicle a speed reference signal 100 switchable between a high and a low value is applied to a comparator amplifier 112 by way of an integrating network 106, 107 so as to limit the acceleration during starting and stopping of the vehicle. The switching system including relays and reed switches operated by magnets at a home and remote station (Figs. 1, 3, riot shown) is contrived such that upon depression of a start button (30) a positive control voltage 101 is connected to the network and the rising voltage across capacitor 107 is applied together with a vehicle speed signal from a tachogenerator 116 to the amplifier 112. The output of the amplifier supplies the field winding 124 of a generator 120 supplying the D.C. drive motor 130; an A.C. motor 128 drives the generator. As the vehicle approaches the remote station a reed switch reduces the control voltage by a potential divider 104, 105 to slow the vehicle and a short while later a relay disconnects the control voltage and substitutes the output of a transducer 110 sensing the vehicle position so as to bring the vehicle to a halt at the remote station (as described in Specification 1,109,220). After a period necessary to unload the vehicle the negative control voltage 103 is connected to the network and the vehicle is driven back to the home station. As the vehicle approaches the home station speed is reduced and the vehicle positioned as before and then after a final delay the control voltage is disconnected until the push-button is operated again to restart the cycle. The system is suitable for use in a. stacking apparatus as described in Specification 1,178,603.
Patent GB-163768-A (GB)
Title: Improvements in carburettors
IPC: F02M9/02
Filed: 1920-02-18
Abstract: 163,768. Heys, F. A. Feb. 18, 1920. Spray carburettors.-A bulbous or pear-shaped nozzle has one or more fuel orifices opening on to a tapered or curved surface of the nozzle and to the rear side thereof relative to the air flow so that with increased air flow, a region of reduced pressure is formed about such orifice or orifices which region may be increased or diminished in accordance with the speed of the air. The mixing chamber 2 is secured to an enlargement 1<b> of the fuel duct 1<a> by a clip 3. Air enters through ports in the enlarged part of 1<a> to a boss 1<c> on which is screwed the fuel nozzle which has an enlarged portion 6 above which the fuel orifices 7 are located and a tapered portion 6a which extends into the mixing chamber. A valve 8 sliding in the mixing chamber, actuated by a Bowden wire 12 and having a deflecting plate 11, seats on the nozzle at or below the outlets of the fuel orifices 7. A manually actuated throttle valve 18 controls the mixture outlet 10. With the valve 8 well open, the enlargement 6 deflects the air and produces a region of low pressure about the fuel orifices. In a modification, the fuel nozzle encloses an adjustable plate 25, Fig. 4, a notch 27 in which may expose one of several orifices 24 of different sizes. In a further modification, the valve 8 and the throttle valve 18 work side by side in the mixing chamber, the deflector for the mixture being carried by the throttle valve. In a still further modification shown in Fig. 9, the fuel orifices 7 are located in an enlargement extending across the air passage 4, the deflector 11 being carried by the sleeve valve 8 and adapted to seat against the rear surface of the enlargement to close the orifices 7. The sleeve valve is prevented from rotating by a slot 15 therein engaging a pin 14 carried by a clip 17 on the mixing chamber casing. The orifices 7 may deliver, as shown in Fig. 4, into a recess 7a which provides a supply of fuel to facilitate starting. The nozzle may be in the form of two cone frustums arranged base to base and a single annular orifice may be employed. Air inlets may be provided in the end or sides of the mixing chamber, and may be controlled by apertured plates or rings. The Provisional Specification states that the valve 8 may be actuated automatically or partly automatically and partly mechanically.
Patent GB-676960-A (GB)
Title: Improvements in or relating to chairs, seats and the like articles of furniture
IPC: A47C7/16
Filed: 1951-02-28
Abstract: 676,960. Seats. GUBLER, E. FORSTER-. Feb. 28, 1951. [Dec. 21, 1950] No. 4911/51. Class 52 (ii). In a chair &c. of the kind in which the back rest can be lowered vertically the seat side members 8 are each provided with an inclined stop 9 and an inclined groove 10 which communicates with a groove 4 in each rear leg 3 while the lower end of each side member 6 of the back rest is provided with a projection 5 engaging the grooves 10, 4. In the elevated position of the back rest the projections 5 are engaged with the inclined grooves 10 and the back rest side members 6 engage at their lower ends with the stops 9 and the rear transverse member 7 of the seat. To lower the back rest it is tilted forwardly until the projections 5 come into line with the grooves 4 whereupon the back rest can be lowered until the upper transverse member of the back rest is flush with the seat members 1.
Patent GB-1493132-A (GB)
Title: Hookes joints
IPC: F16D3/40
Filed: 1975-02-03
Abstract: 1493132 Universal joints GKN TRANSMISSIONS Ltd 3 Feb 1975 [2 Feb 1974] 04930/74 Heading F2U In a Hooke's joint in which retaining elements 23, 24 (Fig. 2), 123, 124 (Fig. 4) are provided to retain the trunnions 20, 120 in apertures in the yoke arms 14, 15, 114, 115, one retaining element 23, 123 co-operates with its associated trunnion or with an intermediate member or the yoke arm through a wedging action so that movement of the retaining element 23, 123 perpendicular to the pivot axis 17, 117 of the trunnion 20, 120 creates a force acting in the direction of the pivot axis 17, 117 is taking up free play. In the embodiment shown in Fig. 2 a retaining element 24 engages in grooves (Fig. 1, not shown) at either side of the opening in the yoke arm 15 and has projections extending into a groove 32 in a trunnion bearing cup 18. The retaining element 23 also engages in grooves, in yoke arm 14 (Fig. 1, not shown) and is slidable in the grooves so that an inclined wedging surface 35 acts through a roller 36 in a groove 32 of the associated bearing cup 18 to create a force acting inwardly along axis 17. The retaining element 23 is retained in its wedging position by a portion 38 subsequently pressed out behind the roller 36. The roller 36 may be replaced by a member having an inclined surface cooperating with surface 35, and fixed in groove 32 (Fig. 3, not shown). In the embodiment shown in Fig. 4 the two retaining elements, 123 and 124, are channel shaped and each has a pair of flanges engaging an inclined surface 140 of the associated yoke arm 114, 115. In assembly one retaining element is moved along the wedging surface as far as it will go and then the other is moved along to cause the stressing as before, local deformations 142 of the elements 123 and 124 engaging the bearing cups 118, and further deformations securing the elements in their adjusted positions.
Patent GB-608181-A (GB)
Title: Improvements in and relating to conveyors
IPC: B61J3/04
Filed: 1946-02-18
Abstract: 608,181. Rope railways. HALL, F. J., and BURGOINE, H. W. Feb. 18, 1946, No. 4975. [Class 104 (ii)] A conveyer system consists of wheeled trucks E moved over a stationary track D by the selective engagement of each truck with a 'continuously-moving endless conveyer, consisting of a connected series of wheeled bogies A, the engagement being effected by projecting interceptors on the trucks into the path of abutments on the conveyer. The bogies run on a continuous stationary track B with guides C and each bogie is connected to a truck by a coupling F on the truck. The coupling F, described in Specification 608,182, comprises a plunger 40 held up by a spring and locked in depressed position by a trip carrying spring 44 and actuated by a pivoted plate 42, which can be actuated manually or by any obstruction such as a colliding truck. The track D consists of steel plates 7 supported by steel pillars 11 and by the edges 8 of a trench 3, their inner edges 9 being spaced apart to form a gap for the plunger 40. The track B consists of angle irons 13 engaged by running- wheels 12 and secured to cross-members 15, which also carry the angle irons forming the guides for rollers 24. The wheels 12 and rollers 24 are connected to the bogies A which are coupled together by rods 20 having provision for movement on curves or inclines and the bogies are propelled by projections 27 on the endless chains 25. Each bogie has a boss 19, having a groove 45 for the plunger 40, which is retained by spring catches 46. The groove 45 and cables 46 may be provided on each side of the boss to enable the trucks to be hauled in either direction.
Patent GB-212256-A (GB)
Title: Improvements in refrigerating apparatus of the absorption type
IPC: F25B15/10
Filed: 1924-02-27
Abstract: 212,256. Platen-Munters Refrigerating System Aktiebolag, (Assignees of Platen, B. C. von, Munters, C. G., and Tillquist, H.). March 3, 1923, [Convention date]. Refrigerating, a b sorption, machines and processes for. - In a continuous-cycle system wherein an insoluble gaseous agent circulates between the absorber A and the evaporator G to equalize the pressure throughout the system, this agent is caused to undergo a condensing and evaporating cycle similar to that of the main refrigerant, to obtain an increased cooling effect in the evaporator. One or more further agents may be used, in which case they should be partly soluble in the absorbent, and are generated from the liquor in an interchanger R. Fig. 2, between the main generator K and the absorber A. In the arrangement shown in Fig. 1, the refrigerant, e.g. ammonia, passes from the steam-jacketed generator K to a condenser coil C' in a water tank L, and flows as a liquid through a pipe F into the evaporator. The insoluble agent, e.g. propane, rises from the absorber and is condensed in a coil C<2> in the tank L, and flows through a pipe I into the evaporator. The pressure in the evaporator due to the level of liquid in the pipes 1, F. causes the vapours to pass back into the absorber, which is fitted with a perforated plate P above the gas inlet. The bubbling of the gas through the liquor in the absorber induces a circulation between the generator and absorber through the connecting pipes B, D. In the arrangement shown in Fig. 2, the main refrigerant generated in the vessel K is condensed in the coil C, the partly soluble agent is separated in an interchanger R from the liquor flowing back into the generator and is condenser in a coil C<3>, while the least soluble agent is separated in the absorber A and condensed in the coil C<2>. The condensed agents are led into a pan V at the top of the evaporator, which is filled with loose heat-conducting material such as metal chips. Suitable agents for this system are sulphurous acid, propane and carbonic acid, of which propane, is separated in the absorber, carbonic acid in the interchanger, and sulphurous acid in the generator. The Specification, as open to inspection under Sect. 91 (3) (a), comprises also the use of a lowtemperature auxiliary generator in place of the interchanger R. This subject-matter does not appear in the Specification as accepted.
Patent GB-774375-A (GB)
Title: Improvements in or relating to composite sheet material for use in producing laminates
IPC: B32B27/00
Filed: 1953-03-23
Abstract: 774,375. Laminated materials. AMBRUS, T. June 22, 1954 [March 23, 1953], No. 5040/53. Class 140. A composite sheet for use as a component of thermosetting synthetic resin laminates consists of one or more layers of glass yarn or glass rovings laminated together with one or more layers of single-creped or double-creped paper. The glass yarn or glass rovings may be chopped into short lengths distributed indiscriminately in the layer, may be in continuous lengths parallel to one another in the or each layer, or may be in the form of diamond matting in which glass rovings overlie one another at an angle of about 60 degrees to give diamond-shaped intersections. The composite sheet may comprise a layer of glass yarn or glass roving between paper layers, or a layer of paper between glass layers. The layers may be united by adhesives such as starch, polyvinyl acetate, or pre-impregnating low-pressure resins, e.g. an unsaturated polyester or a phenol-aldehyde resin. One or more of the composite sheets may be laid in a threedimensional curved mould and formed into a laminate by causing a resin, e.g. a polyester, to polymerize in the interstices of the sheet. Superposed layers may have parallel yarns crossing at an angle. Specification 727,663 is referred to.
Patent GB-323404-A (GB)
Title: Apparatus for the supervision of electric power distributing systems
IPC: H02B15/00
Filed: 1929-02-14
Abstract: 323,404. Jackson, L. Mellersh-, (Siemens & Halske Akt.-Ges.). Feb. 14, 1929. Tell-tale apparatus.-Two representations of an electric network are used. The representation I comprises a facsimile of the conductors 2, source 1, switches 4, and consumers 6, the last being represented by resistances. The representation II is a line diagram and supplies an indication of the routes available at any time for power supply. The operation of the switches in representation I is made to correspond to that of the switches in the network in any desired manner, e.g. by verbal information or by automatic means. The resulting currents in the circuits of representation I operate relays, for example the conductor 2, which control indicating apparatus, for example illuminating apparatus 14, 15, 16, which come into operation to give a visual indication of the routes prepared by the switching operations.
Patent GB-163138-A (GB)
Title: Improvements in and relating to the front forks of cycles, motorcycles, and the like
IPC: B62K21/18
Filed: 1920-02-20
Abstract: 163,138. Allen, W. S. Feb. 20, 1920. Forks for motor and other cycles &c. are provided with strengthening or bracing means comprising a pair of tension wires e which extend one on each side from a transverse member at the upper end of the steering-stem through eyed arms h clipped to the fork limbs to sockets carried by flattened eyes k anchored to the wheel-axle ends. As shown, the transverse member consists of a flat triangular plate a with holes d at the two front corners for the reception and adjustable connection of the upper ends of the wires. The plate may, however, be replaced by a clip, each half of which carries a transversely extending screw-threaded stem for the fixing of the upper end of the corresponding wire.
Patent GB-706705-A (GB)
Title: Improvements in or relating to method and apparatus for the electrostatic separationof corn from its impurities
IPC: B02B1/02
Filed: 1951-03-05
Abstract: 706,705. Treating grain. QUAKER OATS CO. March 5, 1951 [April 17, 1950], No. 5241/51. Class 58. [Also in Group II] In separating impurities from corn by electrostatic means, the mixture is fed on to a rotating cylindical electrode and a high potential applied to a second electrode, the different electrical conductivities of the corn and impurities causing them to be thrown off the cylindrical electrode at different points for collection separately. As shown, the apparatus consists of four such pairs of electrodes, two with voltages in the range 20-40 kv applied to metal strips 27 to cause ionization, and two with voltages in the range 20-28 kv applied. Material is fed on to rollers 25, and ions striking the particles are retained longer by the higher resistance impurities which are thus held for a longer time against the rollers and are carried out at 42. The partly purified stream is then fed to the lower two rollers 25. The voltage applied to the rotating rollers 34 does not form ions, and the impurities are thrown off first and rejected at 43, the cleaned corn being fed out at 41. A current of air may be passed through the electrostatic field and the corn may be sterilized by the ozone produced. This air may be heated to dry the corn. The mixture may be partially dried before being fed to the separator if its moisture content exceeds 15 per cent.
Patent GB-798116-A (GB)
Title: Improvements relating to oil filters
IPC: B01D35/30
Filed: 1957-02-15
Abstract: 798,116. Filters. FRAM CORPORATION. Feb. 15, 1957 [Nov. 27, 1956], No. 5247/57. Class 46. A one-handed screw-on throw-away oil filter comprises a sheet metal shell 10, Fig. 1, with an integral outer end 11 and with the inner end formed by a centrally-apertured sheet metal closure 24, Fig. 2, joined by a rolled seam 32 to the shell 10. The seam is reinforced by an outer flange 31 on a reinforcing plate 25 having, at its inner periphery, an inwardlydirected neck 26 threaded at 27 to permit the filter to be screwed on to an adaptor sleeve 28, Fig. 1. The sleeve 28 secures, by means of a collar 29, an adaptor plate 37 and a plate 36 (intended to prevent flow-back of oil to an inlet passage 39) with an interposed gasket 35, on to an engine casting 33. Oil from the pump passes along inlet passage 39, through holes 40 and 41 in plates 36 and 37 respectively, to an inlet space 62 formed between, on the one hand, sleeve 28 and plate 37 and, on the other hand, closure 24 and plate 25. The space 62 is sealed externally by compression of an annular gasket 49 between an annular rib 48 on the closure 24 and the plate 37 (see Fig. 2). The gasket 49 is permanently secured to the filter by an out-turned lip 50 at the central aperture of the closure 24. The oil passes from space 62, through holes 42 in plate 25 and past an annular non-return valve comprising a rubber disc 43 surmounted by a spring plate 44, radially slotted at its outer edge, to the outside of a hollow pleated paper filter element 14. The filtrate passes to the interior of a perforate tube 16 and thence to the inside of the sleeve 28 and to the engine bearings by way of passage 61. An apertured cap 22 secured between the lower end of the tube 16 and an end disc 18 is pressed into engagement with the spring plate 44 by a spring 54, acting through the element, to seal the inside from the outside of the element. A gasket 59 pressed by a spring 58 in a yoke 55 against an aperture in the other cap 20 constitutes a by-pass valve.
Patent GB-1426062-A (GB)
Title: Polymeric substance
IPC: C08G18/62
Filed: 1971-12-09
Abstract: 1426062 Isocyanate cross-linked copolymers LAPORTE INDUSTRIES Ltd 5 Feb 1973 [9 Dec 1971] 5489/73 Divided out of 1408141 Heading C3P A polymer comprises (a) main polymer chains derived from two or more ethylenically unsaturated monomers at least one of which contains an hydroxyl group, (b) side chains attached to the hydroxyl groups of the main chain formed by reaction of said hydroxyl groups with a lactone whereby the lactone ring opens to form a hydroxyl terminated chain and (c) linking units derived from di- or polyisocyanates which cross-link at least some of the side chains and may be prepared by copolymerizing an ethylenically unsaturated hydroxylcontaining monomer with one or more ethylenically unsaturated monomers (e.g. styrene, vinyl toluene or methyl methacrylate) reacting the copolymer with a lactone and then with a di- or polyisocyanate. In the examples 2-hydroxyethylacrylate is copolymerized with styrene in xylene using 2,2<SP>1</SP>-azobis-2-methyl propionitrile in the presence or absence of carbon tetrachloride, the product solution is reacted with epsilon caprolactone in the presence of dibutyl tin dilaurate and the product after ball milling with titanium dioxide is mixed with one of diphenyl methane diisocyanate, 4,4<SP>1</SP>-methylene bis-(cyclohexyl isocyanate) and 2,21,4-trimethylhexamethylene diisocyanate and applied to glass, steel or aluminium surfaces to cure. The Specification refers to Specifications 1,257,638 and 1,408,141.
Patent GB-655083-A (GB)
Title: Improvements in or relating to variable electrical filters
Inventor: GRISDALE GEORGE LAMBERT
IPC: H04L27/06
Filed: 1948-02-24
Abstract: 655,083. Variable band-pass filters. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 24, 1948, No. 5501. [Class 40 (iv)] [Also in Group XL (b)] The selectivity of a receiving circuit is varied by varying the frequency range of one or more local oscillators. In Fig. 1, variable band-pass selectivity is provided in the I.F. stage of a superheterodyne receiver by applying input signals to a filter A with a pass-band of 100- 120 kc/s., the output being mixed at M with the output of a local oscillator LO, adjustable over a frequency range of 260-269 kc/s., and then fed to a filter B passing frequencies of 140- 150 kc/s. The filters have sharp cut-offs at the upper limits only. When LO is adjusted to 200 kc/s., B passes the whole of the band 140-150 kc/s., but when LO is adjusted to 269 kc/s., the mixer output is 159-149 kc/s. and the output of B is only 150-149 kc/s., so that adjustment of the overall pass-band width is from 10 kc/s. to 1 kc/s. Fig. 2 shows a triple detection superheterodyne receiver with high and variable selectivity. Filters F1, F2 have sharp cut-offs at the lower frequency limits only. The three local oscillators are co-related to maintain a constant mean output frequency of 100 kc/s., although the band width may vary from 6 to 1 kc/s. The local oscillators may be ganged together but'it is preferred to use the system of Fig. 3, which shows means by which the local oscillators may have a common source. Fig. 4 shows an arrangement for three channels, two for the single sidebands and one for the carrier frequency, feeding respectively, demodulators D1, D2 and an amplifier carrier filter AMF, which may be used for automatic frequency control. By the use of switches (not shown) the system in Fig. 4 may be altered to that of Fig. 2.
Patent GB-1422155-A (GB)
Title: Flame-retardant polymeric compositions
IPC: C07F9/659
Filed: 1972-02-07
Abstract: 1422155 Flame-retardant cyclic oxophosphazanes COURTAULDS Ltd 7 May 1973 [7 Feb 1972] 5526/73 Heading C2P [Also in Division C3] A flame-retardant composition comprises a polymer in admixture with a cyclic phosphazane compound of the general formula where n is an integer of at least 3 and R represents an alkyl or alkenyl radical containing from 3 to 6 carbon atoms, the various groups R in the phosphazane molecule being the same or different, preferably the same. The compounds of Formula I are obtained by heating the corresponding cyclic phosphazenes under nitrogen at 200‹ C. In an example the product of formula A is obtained from the phosphazene of Formula B
Patent GB-608403-A (GB)
Title: Improvements in or relating to road sweeping vehicles
IPC: E01H1/04
Filed: 1946-02-22
Abstract: 608,403. Rotary brushes. LEWIN ROAD SWEEPERS, Ltd., DEAR, A. T. C., and HEATHCOTE, F. W. L. Feb. 22, 1946, No. 5559. [Class 19] [Also in Group X] In a road-sweeping machine auxiliary brushes are mounted at one or both ends of a main brush and are rotated at a higher speed than the main brush on axes set at an angle to that of the main brush. The main brush 15 is carried on a shaft 16 on which the auxiliary brushes 17 are rotatably mounted. Each end of the shaft 16 is journalled in a bearing 30 formed in a gear-box 19, which is bolted to a supporting arm 23 that is pivotally attached to the chassis of the machine. At the inner side of the gear-box is secured a bearing member 36, the bearing surface 37 of which is at an angle to the axis of the shaft 16. The sleeve of the auxiliary brush rotates about this member and is supported at the inner end by a spherical bearing 38. Gear teeth 34 formed on the sleeve mesh with a sprocket 33 on a shaft 27 carrying a sprocket 32 which meshes with a sprocket 31 on the main shaft 16. The drive is supplied from the engine to one only of the gear boxes by a chain 26 and a sprocket 29 on the shaft 27, the sprocket 31 being larger than the sprocket 33. Specifications 589,947 and 589,948, [both in Group X], are referred to.