baber/WOPTO huggingface dataset:
Patent GB-913777-A (GB)
Title: Improvements in or relating to apparatus for sorting articles according to their weight
Inventor: BURROWS ARTHUR THOMAS CHARLES
IPC: B07C5/22
Filed: 1959-06-05
Abstract: 913,777. Sorting by weighing. KING Ltd., GEO. W. Aug. 11, 1960 [June 5, 1959], No. 19322/59. Class 143. [Also in Group XXX]  An endless-chain conveyer consisting of oval links and running in a guideway 10 (see Group XXX), carries hooklike article carriers 19 (which, as shown in Fig. 3, are designed for holding chickens by the neck or one leg), the hook part of each of which carriers is attached to means pivoted at 17 to a chain link or, as shown, to a hanger 15 depending therefrom. The weight of the article carried by the hook is applied successively to a series of platforms 22 adjacent the conveyer, each of which platforms is depressed by a predetermined weight less than that causing depression of the preceding platform, the article on the hook being released by the turning of the latter about pivot 17 when a platform descends. As shown, the platforms 22 occupy gaps in a guide track 21 along the top of which a projection 20 from each hook runs until released by the descent of a platform. The short track elements 32 biased by springs 34 and bridging the gaps between the main track 21 and each platform 22, serve to prevent jamming of the system which would otherwise occur when a platform only partially descended.
Patent GB-809495-A (GB)
Title: A process for dyeing polyolefine textile materials
Filed: 1957-06-19
Abstract: Polyolefine textile materials are dyed in a solution of a water-insoluble acetate dyestuff or a basic dyestuff in a liquid aromatic hydrocarbon or liquid hydrogenation product thereof or in a liquid aromatic hydrocarbon substituted by one or more halogen atoms or methyl or ethyl radicals.  Alternatively, the solution of the dyestuff may be emulsified in water.  Specified solvents are benzene, toluene, o-, m- and p-xylene, ethyl benzene, diethyl benzene, chlorobenzene, tetrahydronaphthalene and decahydronaphthalene. Specified emulsifiers are fatty acid-polyethylene glycol condensates and alkyl phenol-ethylene oxide addition products.  Examples are given.
Patent GB-1217100-A (GB)
Title: Screwdriver
IPC: B25B23/16
Filed: 1969-04-16
Abstract: 1,217,100. Handle constructions. NECCHI S.p.A. 16 April, 1969 [31 May, 1968], No. 19358/69. Heading B4K. [Also in Division B3]  A screwdriver has a permanent magnet 15 in a cavity 14 at the end of the handle remote from the shank 12. The cylindrical magnet 15 may be a force-fit in the cavity.
Patent GB-356350-A (GB)
Title: Method of rolling seamless tubes
IPC: B21B23/00
Filed: 1930-06-25
Abstract: 356,350. Rolling tubes. ESSER, H., 37, Hagelkreuzstrasse, Hilden, Rhineland, Germany. June 25, 1930, No. 19365. Convention date, July 2, 1929. [Class 83 (iv).] Separating mandrels from work.-In rolling tubes by piercing billets in a cone or disc mill 2 and then rolling them in a two high plug mill, in front of which are two or more feed channels 6, 8, the plug mill is provided with a number of grooves I, II, so that the reduction desired is spread over two passes and at least two tubes can be rolled simultaneously. The tube 1, after being passed through the pass I and disengaged from the plug 4 by a stripping roll 5 is brought back through the separated rolls into the feed channel 6, transferred by a device 7 to feed channel 8 and then passed through groove II, another tube at the same time having been fed from the mill 2 to channel 6 and passed through groove I.
Patent GB-406744-A (GB)
Title: Improvements relating to circuits including thermionic valves for the amplification of electric signals
IPC: H03F3/32
Filed: 1932-07-08
Abstract: 406,744. Valve amplifying circuits. ROBINSON, E. Y., Garvary, Dryden Road, Bush Hill Park, Enfield, Middlesex, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. July 8, 1932, No. 19397. [Classes 39 (i) and 40 (v).] The two valves 4, Fig. 1, of a push-pull amplifier each have an additional electrode 8, at high potential located between the control grid 3 and the anode, and means for suppressing secondary emission from the anode, the voltages applied to the grids 3, 8 being such that the valves operate with a low quiescent current and each amplifies alternate half-waves of the signal. Secondary emission from the anode is preferably suppressed by an additional electrode 11 tied to the cathode. Alternatively the anode may be of slatted construction, the slots being arranged edgewise to the flow of electrons. A common source of grid-bias 5 is used, the high resistance 10 preventing parasitic oscillations. The quiescent currents of the valves are matched by adjusting the potentials of the grids 8, an ammeter 9 indicating the optimum condition. The ammeter may have a differential winding, the currents through the valves being equal when the indicator is at zero. (Figs. 2, 3, not shown). The two valves may be contained within a common envelope, Fig. 4, the characteristics of the valve being modified so that with a low or zero grid-bias the optimum quiescent current is obtained. In this case, a condenser 15 across one primary of the output transformer prevents parasitic oscillation. Specification 399,703 is referred to.
Patent GB-587016-A (GB)
Title: Improvements in overload protective arrangements for dynamo electric machines
IPC: H02H7/085
Filed: 1944-10-10
Abstract: 587,016. Protective cut-out arrangements; thermal switches. ROSS, T. W., SMITH, R. M. A., THIRLWELL, E. L., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Oct. 10, 1944, No. 19516. [Class 38 (v)] In an arrangement for the protection of an A.C. dynamo-electric machine against overheating, a thermally responsive bi-metallic element 2a is connected to a pivotally mounted block 2d, a second bi-metallic element 2f also being connected to the block 2d to compensate for ambient temperature changes, the latter element carrying a projection 2g adapted to engage the actuating lever 6b of a snap-action micro switch 5 when the element 2a flexes under the influence of a heating coil 26 energized from a saturable current transformer 3 responsive to the load current of the machine. Closure of the switch 5 operates a suitable tripping device to isolate the machine. The saturable transformer 3 delivers a maximum value of secondary current so that operation of the tripping relay is prevented on short, high overloads, e.g., the starting of a motor. The bi-metallic element 2a may be heated directly by passing the heating current through it, or a heating coil for a mass of metal placed adjacent the element, may be employed. Curves of performance are given in Fig. 2 (not shown). Specifications 304,598, [Class 38 (v)], and 577,092 are referred to.
Patent GB-984200-A (GB)
Title: Suspension system for vehicles
IPC: B62D55/116
Filed: 1963-05-17
Abstract: 984,200. Pneumatic springs. CATERPILLAR TRACTOR CO. May 17, 1963 [June 29, 1962], No. 19778/63. Heading F2S. [Also in Division B7] In a suspension system for an earth moving vehicle having on each side a pair of wheels 12a, 12b which engage an endless track 13 and are pivotally mounted on arms 15a, 15b, variable rate hydropneumatic springs 16a, 16b connected to the arms 15a, 15b are controlled in sequence by a levelling valve 18a linked to one arm 15a. Each spring 16a, 16b includes a piston 17a which is connected to the associated arm and defines a gas chamber 56 and a fluid chamber 58 communicating through a restricted orifice 52 with a fluid chamber 57a in a gas accumulator 51 including a gas chamber 55 defined by a piston 57. The valve 18a includes a spool 20 resiliently linked to the arm 15a by a spring 42 and damped by a dash-pot 43. When a control valve 21 is in an automatic ("A") position, fluid is supplied to the valve 18a through a conduit 31 from an accumulator 25 fed by a pump P through a relief valve and a pressure regulator, and a return line from the valve 18a communicates with a sump 30. Upon upward displacement of the wheel 12a due to an obstacle or increased loading of the bowl 11 of the vehicle resulting in corresponding displacement of the valve spool 20, fluid is first supplied through a conduit 34 to the spring 16b to increase the load on the wheel 12b until the pressure in the conduit 34 exceeds that in the spring 16a and displaces a shuttle valve 39, whereupon fluid is then supplied to the spring 16a until the valve spool 20 is restored to its initial position. In an " L " position of the control valve 21 the conduit 32 communicates with the sump 30 whereby fluid from the springs is exhausted through check valves 37, 38 to lower the vehicle body relatively to the wheels, and in an " R " position fluid is supplied to the springs through the conduit 31 and check valves 35, 36 to raise the body. In either " H " position of the control valve 28 both conduits 31, 32 are closed and the spring rates are maintained at a constant value. By actuating a lock-out valve 22 pressure fluid may be supplied to chambers 53 in the springs 16a of the front wheels 12a and in the similar springs 16d of the rear wheels 12d whereupon valve members 46 are displaced to prevent communication between the chambers 58, 57a and to interconnect the chambers 58 of the front springs 16a on each side of the vehicle. The front and rear springs 16a, 16d are thereby rendered ineffective and the front wheels 12a can oscillate in opposite fashion to provide a stable three-point suspension for bulldozing or loading operations. The control and lock-out valves 21, 22 may simultaneously control the wheels on both sides of the vehicle or they may be duplicated, and a further control valve 21a may be connected for individual control of certain of the wheels for correction of unbalanced loading. The invention may be applied to vehicles not provided with endlesstracks.
Patent GB-879413-A (GB)
Title: Motor mountings
IPC: F16F15/08
Filed: 1960-06-03
Abstract: 879,413. Motor mountings. ELECTROLUX CORPORATION. June 3, 1960 [June 3, 1959], No. 19787/60. Class 35. A vacuum - cleaner motor fan unit is resiliently supported in a housing 10 by a resilient ring 67 which is clamped to an inwardly-projecting flange 62 by a ring 66 which has axially-projecting brackets 68 having holes through which radially-projecting portions 75 of the resilient ring abut the outer surface 85 of the motor casing. Flange 62 extends inwardly from a bulkhead 60 secured to the housing, and the metal ring 66 and the rubber spacing-ring 67 are bolted to it by three bolts 64. The ring 66 includes three brackets 68 (Fig. 3) having axially-extending portions 70 shown in Fig. 4. Integral with the resilient ring 67 are three equispaced resilient blocks 74 carrying the radial projections 75, these extending through apertures 72 in axial portions 70. The apertures and projections are elongated axially, the projections being narrower than the apertures. Studs 80 pass through rectangular washers 86 and holes 78 in the blocks and engage with a threaded hole 82 in boss 83 on the motor frame 30. A skirt 92 and bead 94 integral with the resilient ring bears hermetically against the motor frame and serves together with the ring to prevent recirculation of air. The resilient ring includes lips 96 which engage recessed ridges in the ring 66. Holes 90 make the rubber projections 75 more resilient. The two-stage fan circulates the suction air through the motor for cooling, as shown by arrows 53, 55.
Patent GB-744268-A (GB)
Title: Derivatives of chrysanthemum monocarboxylic acid
Filed: 1953-07-17
Abstract: The invention comprises (1) the production of esters of the formula <FORM:0744268/IV(a)/1> where R is an unsaturated organic radical of 3 or 4 carbon atoms or an araliphatic radical of 7 carbon atoms and is free of elements other than carbon, hydrogen and oxygen, by reacting chrysanthemum monocarboxylic anhydride with the corresponding 2-substituted-3-methyl-4-hydroxy-cyclopentenone; and (2) the compounds of the above formula where R is methallyl or benzyl. The process is carried out at 50-20 DEG  C., preferably 150-175 DEG  C., and it is stated that impurities in the hydroxy-cyclopentenone do not react with the acid anhydride.  The desired ester is recovered by washing the reaction mixture with dilute alkali to remove chrysanthemum monocarboxylic acid formed in the reaction and volatilizing low-boiling material to leave the pure ester.  The chrysanthemum monocarboxylic anhydride can be obtained by heating the acid with a lower aliphatic monocarboxylic anhydride, the latter being in excess, e.g. 1.1 to 10 times the theoretical amount.  The chrysanthemum monocarboxylic acid formed in the esterification step can be recovered and re-converted to anhydride.  Examples show the production of chrysanthemum monocarboxylic anhydride from the acid and acetic anhydride, and the production of esters therefrom where R is allyl, furfuryl, benzyl, 2-butenyl and methallyl.  Comparative examples show how 3-hydroxy-8-nonen-2 : 5-dione (a common impurity in the hydroxy-cyclopentenone) is readily esterified with chrysanthemum monocarboxylic chloride but scarcely at all with chrysanthemum monocarboxylic anhydride under the reaction conditions.
Patent GB-530960-A (GB)
Title: Improvements in or relating to encased gearings comprising two or more shaft coupling devices
IPC: F16H57/02
Filed: 1939-07-07
Abstract: 530,960. Gearing for driving two or more shafts. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. July 7, 1939, No. 19856. Convention date, July 8, 1938. [Class 80 (ii)] [Also in Group XXVI] Two or more clutches 8, 9 are arranged in the same casing as variable-speed or other gearing, and are supported in the casing wall by bearings 6, 11. The grooved clutch discs 8a are forced apart by fluid-pressure exercised, for example, through ducts 14 and associated ducts in the shaft 2. Prime movers may be attached to the coupling members 12, 13, or a single prime mover to the shaft 5. Specification 207,318, [Class 80 (ii)], is referred'to.
Patent GB-516770-A (GB)
Title: Improvements in or relating to hinged doors
IPC: E05D7/14
Filed: 1938-07-06
Abstract: 516,770. Safes. POWER, R. F. July 6, 1938, No. 19983. [Class 44] In a door particularly for a safe the free edge of the door A as seen in plan is curved, as shown in. dotted lines at D, in the form of a circular arc having its centre at the axis of the hinge B, or, as shown in full lines at D<1>, an arc of shorter radius with its centre off-set from the hinge towards the edge of the door, as at B<1>, the horizontal width of the inner face of the door being not less than that of the outer face. The hinged edge E<2> of the door may have a similar curved form as shown dotted, or straight and set at an angle as in the full lines. The edges of the doors may be stepped and the above curvature applied to the appropriate faces of the steps. Alternatively, an approximation to the curved form may be used, comprising facets D<2>, Fig. 4, each of which is inclined at an angle greater than a right-angle to the line joining the rear edge of the facet to the hinge centre. The application of the invention to a circular door is also described. In all cases the door frame C has surfaces corresponding in form with the door edges.
Patent GB-751307-A (GB)
Title: Patient table for an x-ray installation
IPC: A61B6/04
Filed: 1954-07-08
Abstract: 751,307. X-ray apparatus. SMIT-RONT. GEN N.V. July 8, 1954 [July 8, 1953], No. 20046/54. Class 98 (1). In a patients' table which may be tilted from a horizontal position in either direction about a transverse axis at a height above the floor less than half the table length, the table top is longitudinally movable with respect to a support which is rotatable about the tilt axis and which carries a rotatable transmission member engaging a toothed sector centred on the tilt axis and fixed to the base of the table, and a second transmission member coupled with the first engages a toothed rack on the table top, so that when one of the transmission members is rotated the first tilts the table and the second moves the table longitudinally. As shown, the table top 11 is supported on a member 9 slidable in guides in a support 7 pivoted at 3 to the base 1. A shaft 12 is journalled under the table top and driven by a motor 15. Two worms 17, 18 are slidably mounted on shaft 12 but are keyed to a groove therein, and are held longitudinally by lugs 16 on support 7 through which shaft 12 passes. Worm 17 engages a toothed sector 4 fast with base 1, and so tilts the table when rotated by shaft 12. Worm 18 engages a rack 19 on the underside of table top 11, and so moves the table with respect to support 7 when the shaft 12 rotates. The arrangement is such that the table can be tilted in either direction to a vertical position without the end of the table striking the floor. In a modification, worm 18 is omitted and a set of teeth formed inside sector 4 engage a pinion which is fast with another pinion engaging rack 19. Further, both tilting and longitudinal displacement of the table may be effected by two pinions fast with a third pinion driven by a worm on shaft 12.
Patent GB-297547-A (GB)
Title: Improvements in drawbar cradles for vehicles
IPC: B60D1/50
Filed: 1927-07-28
Abstract: 297,547. Brockhouse, J. T., and Field, A. J. July 28, 1927. Draw-gear. - In a draw-bar cradle for a railway vehicle of the kind comprising separate end plates 1 and side-bars 5 having cranked ends 6 adapted to seat in radial slots or grooves 3 in the end plates and to be riveted therein, projections or pegs 4 are formed integral with or fixed to the end plates 1 so as to engage corresponding holes 7 in the side-bars and to be riveted over after the parts are assembled. The grooves 3 are continued longitudinally along inwardly directed extensions 2 of the end plates and receive portions of the side-bars 5.
Patent GB-350275-A (GB)
IPC: C10M103/06
Filed: 1930-07-02
Abstract: A method of treating wires &c. preparatory to a cold-drawing operation comprises pickling in acid, neutralizing in trisodium phosphate lye after washing in water, and then drying in air.
Patent GB-353658-A (GB)
Title: Improvements in or relating to thermionic amplifiers employing five-electrode valves
IPC: H03F1/40
Filed: 1930-07-02
Abstract: 353,658. Valve amplifying circuits. GRAMOPHONE CO., Ltd., Hayes, and ATKINS, H. C., 335, Princes Gardens, West Acton, both in Middlesex, and HUXTER, H. C., 59, Bathurst Walk, Iver, Buckinghamshire. July 2, 1930, No. 20091. [Class 40 (v).] In an amplifier with a pentode output means are provided for feeding back energy of low frequency in the anode circuit of the pentode for reamplification. The Figure shows a pentode valve I having a grid biasing resistance 13 in the anode circuit shunted by a condenser 14 to byepass the higher frequencies. The circuit 17, 21 feeds back energy to the primary of the coupling transformer and by adjusting the position of the tapping point the fluctuations in grid bias potential may be overcompensated and the amplification of the low frequencies adjusted to ensure substantially constant amplification of all frequencies required. Resistance 21 prevents the amplifier from becoming unstable or switching cn when the pentode is directly heated and the preceding valve is indirectly heated while condenser 17 may be the usual decoupling condenser. The centre tapped resistance 15 provides the cathode return for the pentode.
Patent GB-677382-A (GB)
Title: Means for preventing or indicating wheel slippage in electrically driven vehicles
IPC: B60L3/10
Filed: 1950-08-14
Abstract: 677,382. Control of several motors. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 14, 1950. [Aug. 18, 1949] No. 20136/50. Class 38 (iii). Relates to means for preventing or indicating wheel-slippage in a system for an electric vehicle comprising a plurality of similar wheeldriving direct-currents motors. Parallel-connected motors 1-4 are energized through separate bus connectors 101-104 which are associated with the alternating-current windings 10, 11, of saturable reactors 8. The connectors are arranged so that the direct-current saturating flux of each reactor is balanced at zero value when all the motors draw equal currents. The windings 10, 11, are supplied from an alternating-current source 12, those of each reactor being associated in series with a transformer primary winding 21, 22, or 23. When one or more of the motors slip the resulting reduction of motor current will cause the direct-current flux in at least one of the reactors to become unbalanced so changing the alternating-current impedance. The current through the alternating-current reactor coils is thereby changed so causing actuation of a relay 27 which is fed from secondary winding 25 through rectifier 26. The reactors may be constructed as shown in Fig. 4 which shows the conductors 101-104 passing through laminated iron cores 71, 72. The alternating- current windings 10, 11, are differentially wound on the two cores and are split into two parts such as 10a and 10b so as to compensate for non-symmetrical positioning of the conductors relative to the cores. The application to a series-parallel system wherein the motors are supplied from a local generator is illustrated in Fig. 2 (not shown), the control for parallel operation being similar to that described except that the output of the transformer is applied to a non-linear resonant circuit comprising a relay which controls a warning horn. Additional reactors are brought into circuit for the series operation of the motors, these reactors comprising opposing direct-current coils which are each connected across the armature of a motor forming one of a series pair. The additional reactors may have a three-legged core, Fig. 3 (not shown), the alternating currentwindings being placed on the outer legs and the direct-current winding on the central leg.
Patent GB-708133-A (GB)
Title: Improvements in or relating to devices having a magnetic circuit comprising highly-permeable material
IPC: H04M1/03
Filed: 1951-08-27
Abstract: 708,133. Electromagnetic switches. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 27, 1951 [April 23, 1951], No. 20138/51. Class 38(5) [Also in Groups XXXV. XXXIX and XL(a)] In an electromagnetic relay the magnetic-circuit comprises parts 1, 2 and armature 3 of high permeability, air gap 5, and a permanent magnet 4 of material having a coercivity of at least 750 Oersted, the permanent magnet extending along the general direction of the flux in the adjacent regions of high permeability, and being magnetized so that its poles lie on surfaces which make contact with the high permeability parts. The relay may be designed so that with a predetermined current in coil 6 the forces due to the fluxes produced by this current and the permanent magnet which may assist or oppose and to spring 7 are in equilibrium, the armature moving from contact 8 to contact 9 when the current changes by a small amount. The relay may be a maximum, minimum relay with two armatures, or it may have a centrally pivoted armature operated by magnetic circuits at each end, which circuits have separate permanent magnets but a common winding, Fig. 2 (not shown). The magnet may be made of the mixed oxide composition forming the subject-matter of Specification 708,127, [Group XXXV].
Patent GB-670118-A (GB)
Title: Improvements in or relating to method of and apparatus for casting elongated articles
IPC: B22D13/02
Filed: 1949-08-03
Abstract: <PICT:0670118/III/1> Hot cast-iron pipes from a casting-machine are carried by conveyers 27, 38, 39 to a hood D, where they are cleaned by air blast containing sand, shot or other abrasive, and thence by conveyers 39, 42 through a tank 41 containing tar or bitumen to a truck 43.  The conveyer 42 is arranged to hold the pipes inclined so that surplus tar drains away and the heat of the pipes dries them. The hoppers 16 and batteries of moulds may be duplicated.