baber/WOPTO huggingface dataset:
Patent GB-1380413-A (GB)
Title: Prepayment device for tennis badminton and like games
IPC: G07F17/38
Filed: 1971-01-18
Abstract: 1380413 Coin controlled net tensioning device ROBERT RIGBY Ltd 31 Jan 1972 [18 Jan 1971] 2422/71 Heading A6D [Also in Division G4] A net tensioning device is provided with a clutch arrangement prohibiting tensioning of the net when disengaged and a prepayment meter arranged to activate means to engage the clutch for a period of time to enable the net to be tensioned. In the arrangement shown handle 18 is used to tension the net support cord 2 through a worm 10 and worm-wheel 8. The worm 10 is pivotally mounted at one end 12 and the other end is supported in a movable bracket 20 to engage or disengage the worm 10 and the wheel 8. The bracket 20 is normally in its lower position so that the net can not be tensioned. The bracket 20 is raised to engage the worm 10 and wheel 8 by solenoid SOL. 1 controlled by a coin operated microswitch and a push button in the pre-payment meter. Movement of bracket 20 operates switch M.S.2 to de-energise solenoid SOL. 2 to permit insertion of locking member 38 by spring 42 and de-energise solenoid SOL. 1. The cord 2 can then be tensioned. After a set period of time the prepayment meter operates through a further switch M.S. 3 to energise solenoid SOL. 2 to withdraw the member 38. SOL. 2 also operates switch M.S. 4 which energises solenoid SOL. 3 to positively move the bracket 20 downwards to disengage the worm 10 from wheel 8 and thus release the tension on the net cord 2. Movement of bracket 20 downwards opens switch M.S. 3 to de-energise SOL. 2 and the spring 42 urges the plunger back sufficiently to open switch M.S. 4 to de-energise SOL. 3 and leave the mechanism ready for further operation on insertion of a further coin in the prepayment meter. A further push button is arranged in the circuitry to allow solenoid SOL. 2 to be operated to release tension in cord 2 if it has been over tightened. The mechanism can be battery or mains operated. A lever can be incorporated in the cord tensioning mechanism to improve the mechanical advantage thereof.
Patent GB-1346732-A (GB)
Title: Electrostatic coating of a powder coating composition
IPC: B05D1/34
Filed: 1972-01-18
Abstract: 1346732 Electrostatic coating BEATRICE FOODS CO 18 Jan 1972 [18 Jan 1971] 2429/72 Heading B2E [Also in Division C3] In a method of coating a charged mixture of powders is applied to a conductive surface by electrostatic deposition on to an electrically neutral or oppositely charged surface, the mixture being subsequently fused to produce the coating. The mixture comprises: (I) a first film - forming, electrically non - conductive organic and/or inorganic powders and one or more of the following powders (II) a second film-forming electrically non-conductive organic and/or inorganic polymer, the dielectric constant of I and II differing by at least 0.1 and the specific gravity of the polymer having the higher dielectric constant being at least 0.1 greater than the specific gravity of the polymer having the lower dielectric constant; (III) at least one non-migratory electrically conductive metal having a specific gravity at least 3 times that of I, or (IV) at least one electrically conductive non-metal having a specific gravity at least 1.5 times that of I. On fusing the coating III or IV remains substantially in contact with the. substrate leaving a surface of polymer. III is defined as a metal which does not migrate to the surface during fusing. Suitable III are Fe, Zn, Cu, Ni, Sn, Cr, Ti, Zr Pb and alloys thereof, brass and stainless steel. Bronze and Al are not suitable as they migrate to the surface. In an example I is a carbon black pigmented epoxy resin containing dicyandiamide and an amine accelerator, II is polyethylene powder and III Zn dust. The mixture was coated on to an earthed steel panel which was baked at 300‹F for 3 minutes and raised to 420‹F over 10 minutes. After cooling the coating comprises a flat essentially clean coat on top overlying a zinc rich coating adjacent to the substrate.
Patent GB-1305695-A (GB)
IPC: C01B4/00
Filed: 1971-01-19
Abstract: 1305695 Deuterium-enriched amines COMMISSARIAT A L'ENERGIE ATOMIQUE 19 Jan 1971 [10 Feb 1970] 2520/71 Heading C2C Liquid primary or secondary aliphatic amines are enriched in deuterium by isotopic exchange between deuterium or deuterated hydrogen gas and the amine in the presence of a tertiary amine of formula RR<SP>1</SP>R<SP>11</SP>N, where R, R<SP>1</SP> and R<SP>11</SP> are C 1-4  aliphatic radicals, and in the presence of a catalyst, which in examples is the potassium salt of the primary or secondary amine. Examples enrich methylamine, dimethylamine and ethylamine in deuterium.
Patent GB-815431-A (GB)
Title: Improvements in electric disconnecting switches
IPC: H01H31/28
Filed: 1955-01-27
Abstract: 815,431. Air-break switches; contactmembers for switches. COX, J. E. Jan. 24, 1956 [Jan. 27, 1955], No. 2527/55. Class 38 (5). In a disconnecting switch either the fixed or the moving contact is in the form of two spaced limbs for embracing the other contact and the co-operating surfaces of the contacts are of silver and copper respectively. In Figs. 1 and 3, the moving contact is a copper tube 6 pivoted at 21 on a terminal member 2 and provided with silver contact buttons 12 at its free end. These silver buttons co-operate with a fixed copper contact formed by four drawn copper risers 8 which are pressed upwardly by backing springs 11. Figs. 5 and 6 (not shown), illustrate a pole-operated switch in which the moving contact comprises two pivoted parallel spaced copper blades interconnected at their ends and midpoints, the blades embracing a copper post which is provided with silver contact buttons. In both of the above examples one of the co-operating surfaces at the hinge of the pivoted moving contact may be of silver. In Figs. 7 and 8 (not shown), the moving contact is in the form of a resilient substantially U-shaped copper strip element which is carried on a pivotally mounted insulator and cooperates with a copper post which has silver contact buttons.
Patent GB-569009-A (GB)
Title: Improvements in and relating to the shape of bodies, fuselages, hulls and the like for air, land and sea
IPC: B64C1/00
Filed: 1943-02-16
Abstract: 569,009. Fuselages and nacelles. NAVARRO, J. G., and NAVARRO, M. A. Feb. 16, 1943, No. 2537. [Class 4] Aeroplane fuselages, nacelles and hull bodies are made in one or more sections, are tapered from the nose b to the widest part c from which they are longitudinally straight or have a very slow curve, being also provided with fluid inlets i, shown in inverted plan, Fig. 2, covered by louvres, shutters or gauze.
Patent GB-725567-A (GB)
Title: Self levelling, storing and dispensing apparatus
IPC: B65G1/07
Filed: 1953-01-29
Abstract: 725,567. Self-levelling devices. AMERICAN MACHINE & FOUNDRY CO. Jan. 29, 1953 [Feb. 9, 1952], No. 2567/53. Class 78 (2). Trays of bottles are stacked on a self-levelling platform 30 counterbalanced by spring 36, the layers of bottles being separated by separator plates 62 guided by guide 46. As shown, platform 30 is carried by cantilevers 20 furnished with rollers 24 which run vertically up both sides of pillar 16, the weight of the whole being taken by springs 36. The said plates have lugs (or rings) 44 engaging the guides 46 so that when out of use the plates may be stacked as shown against rest 48. The plates may have collapsible feet 50 separating one plate from the next. Rest 48 may carry an advertisement. Stop 58 engages to stop the platform 30.
Patent GB-114618-A (GB)
Title: A Process for Enamelling Metal Articles and an Improved Arrangement of Furnace therefor.
Inventor: DUPONT PAUL
IPC: C23D9/02
Filed: 1918-02-14
Abstract: 114,618. Dupont, P. March 30, 1917, [Convention date]. Enamelling-furnaces; metal-heating furnaces.- A furnace for enamelling articles by the powder. ing process comprises a wall A of very porous refractory material, of the general shape of the article, e.g., a bath B, supported within a metal casing C by projections d, leaving a space e for the circulation of the combustible mixture which is supplied through pipes D and is ignited by burners E. Extensions c of the casing C support the edge b of the bath. The furnace is provided with a flat cover also provided with a porous lining A, but with non-porous refractory pieces K at the angles to protect the edges b. The furnace is mounted upon a suitable double support so that ib can be tilted longitudinally and transversely to facilitate the powdering operation. Waste gases escape by passages F and may be used for preheating the mixture or for heating a stove for preheating the articles. In operation, the article previously heated in the stove is transferred to the furnace and raised to the proper temperature which is ascertained through a mica-covered sighthole in the cover. The cover is then raised by a windlass &c. and the powder applied, the heat of the furnace being meanwhile maintained. Fig. 2 shows a modification of the furnace in which the wall A is reduced in thickness, leaving a larger space e into which open a series of burners L. The refractory material A may be porous or not and may be reinforced by a metal plate. The Specification as open to inspection under Sect. 91 (3) (a) states that the furnace is applicable to the heating of metal articles in general, steamgenerators, &c. This subject-matter does not appear in the Specification as accepted.
Patent GB-323940-A (GB)
Title: Improvements relating to land tractors which are fitted with winches
IPC: A01B3/72
Filed: 1929-01-26
Abstract: 323,940. Hodgson, J. Jan. 26, 1929. Anchoring.-In a land tractor fitted with a winch for haulage &c. purposes the winch a is mounted in a frame b carried by rings c attached to the centre portion d of the back axle casing, and an anchoring device k<1> is pivoted to the frame b which can be retained in the position shown or allowed to take a substantially vertical position with its lower end in the ground. The parallel side members k<1> are connected by cross-members k<2>, k<3>, the lower of which forms an abutment from which project a pair of plates k'. Stops m on the frame b abut against the members k' when they are vertical. The anchor is retained in the raised position by the engagement of a pawl q pivoted to the frame b with a stud r.
Patent GB-432285-A (GB)
Title: Improvements in or relating to shaping the operative surfaces of the grinding and control wheels of centreless grinding machines
IPC: B24B53/08
Filed: 1934-01-26
Abstract: 432,285. Trueing rotating tools. HEARD, F. G., 4, Oakington Avenue, Harrow Garden Village, Middlesex. Jan. 26, 1934, No. 2782. [Class 60] The operative surfaces of the grinding and control wheels of a centreless grinding-machine are trued in succession by a single cutter under the control of a single cam or former. The former A is of circular cross-section and is supported by the rest E, and adjusted and secured by screws A<1>, A<2> and distance-pieces A<3> passing through the heads of bolts A<4>, the screws being mounted in arms D<2> secured to the rest, and carrying a bar D<3>. On this bar is slidable, by means of a screw H, a housing D, in which is slidable transversely a carrier C having downwardly projecting parts C<3>, C<4> provided with coaxial rectangular openings to receive a block B<2>, held in position by a screw B<4>. The block receives a tapered holder B carrying a diamond or other cutting-point B and on the rear end of the block is a steel rod or wire tracer B<3>, which engages with the former A, being held there against by a spring plate F secured to the housing D by a screw F<1> ; cooling liquid is supplied by a nozzle G projecting through the plate F, and a similar plate F is provided on the opposite face of the housing. In operation, the housing is moved parallel to the axis of the grinding-wheel X, by the screw H, the block B<2> lying in the opening C<5> and being moved in the housing towards and from the axis of the wheel by the cam. The block is then moved to the opening C<6>, and the control wheel Y is similarly shaped. In a modification, the housing D is carried by a slide located above the wheels X, Y.
Patent GB-377945-A (GB)
Title: Improvements in or relating to carburettors
IPC: F02M1/00
Filed: 1931-01-28
Abstract: 377,945. Spray carburetters. LAVERGNE, J., 50, Quai National, Puteaux, Seine, France. Jan. 28, 1931, No. 2825. Convention date, Feb. 24, 1930. Void [Published under Sect. 91 of the Acts]. [Class 7 (iii).] Rich mixture is delivered through a number of flared outlets such as 15, 16 into a number of air passages such as 3, 4 the flow through which is controlled by valves 7, 8 adapted to be actuated in succession. The outlets 15, 16 are supplied through tubes 9, 10 which receive fuel through nozzles 13, 14, Fig. 2, and air through tubes 11, 12, Fig. 3. Fuel is supplied from the float chamber 1, Fig. 1, through duct 36, Figs. 1 and 3. An arm 22, Fig. 4, is keyed to another arm 23 which, through a spring 24, is adapted to actuate a plate 25 on the spindle of the valve 7. After a predetermined opening movement, the arm 23 engages 'a roller 27 on'a plate 26 secured to the spindle of valve 8. A slow-speed nozzle 17, Fig. 2, is supplied with fuel through a nozzle 33, and with air from a tube 6 having normal inlets at 28, 29, the latter being capable of being closed from a distance to give a rich starting mixture. The tube is also provided with a large inlet 30 adapted to be closed during starting by a valve 31 carried by the plate 25. The mixing chamber 5 is curved, and is heated by a jacket 18 the flow in which is opposite to that of the mixture. Mixing is facilitated by a gauze cone 21 arranged as shown in Fig. 1, or in the reverse direction.
Patent GB-251684-A (GB)
Title: Improvements relating to chimney pots
IPC: F23L17/02
Filed: 1925-02-03
Abstract: 251,684. Browning, T. H. Feb. 3, 1925. Chimney. tops.-A square or rectangular chimney pot is provided with baffle plates A projecting inwardly and upwardly from the lower edges of openings B formed in two opposite sides, and a grille C, fitted across the top of the pot, is set with the bars in each half inclined at an angle corresponding to the inclination of the respective baffle plates. The grille C may be riveted to the pot. A lip E is provided above each opening B. The plates A may overlap.
Patent GB-1484207-A (GB)
Title: Optical fibre optical power dividers
IPC: G02B6/28
Filed: 1975-01-23
Abstract: 1484207 Joining optical fibres STANDARD TELEPHONES & CABLES Ltd 23 Jan 1975 3000/75 Heading C1M [Also in Division G2] An optical fibre optical power divider is made by: (a) inserting glass optical fibres 15 into two or more converging bores 12 formed in one end of glass block 10 until the fibre ends meet the end of optical fibre 14 inserted into a bore 11 in the other end of the block 10, each fibre fitting loosely in its bore, and the block having a refractive index not above that of the cladding glass of the fibres and a lower softening point than the glasses of the fibres; (b) heating the block 10 to soften it while maintaining compression so that the block collapses around the fibres; and (c) drawing down a region of the block 10, which region includes the point at which the fibres meet (13). Preferably the block 10 is heated in a furnace which provides a hot zone centred on the point 13 at which the fibres meet, the hot zone then being extended towards both ends of the block (to prevent trapping of air bubbles). Block 10 is preferably drawn down so that at 13 the fibres have external diameters less than the core diameters prior to drawing. The block 10 may have a refractive index equal to or less than that of the fibre cladding.
Patent GB-409856-A (GB)
Title: Improvements in or relating to wood block flooring
IPC: E01C5/14
Filed: 1933-01-31
Abstract: 409,856. Floor blocks. EBNER, F. H., 27, Stewart Street, Cubitt Town, London. Jan. 31, 1933, No. 3006. [Class 87 (i).] A wood floor block a having a tongue b on two sides, adjacent or opposite, and a rabbet d on the other two sides, is provided with ventilating channels g and f on the underside, extending from end to end and side to side.
Patent GB-510526-A (GB)
Title: Improvements in pistons
IPC: F16J1/06
Filed: 1938-01-31
Abstract: 510,526. Pistons. WAKE, T. J., and SIMPSON, T. Jan. 31, 1938, No. 3018. [Class 122 (i)] In a piston the skirt is split so as to permit expansion at right angles to the axis of the gudgeon pin and expanded by rings p and e. The head a has integral annular extensions d and f of reduced external diameter on which corresponding parts of the skirt bear. In a modified form the skirt portion has external spaced bearing surfaces which may be annular or disposed longitudinally, whilst the body may be lightened by forming a slipper piston. The split in the skirt may be offset on either side of the plane through the axis of the gudgeon pin.
Patent GB-469817-A (GB)
Title: Improvements in or relating to the spinning of viscose artificial silk
Filed: 1936-01-31
Abstract: In spinning viscose artificial silk a proportion of an organic substance, the molecule of which has a surface active cation derived from an organic base substituted by an aliphatic chain of high molecular weight (e.g. containing more than 6 carbon atoms) is added to the spinning bath or spinning solution.  A particularly suitable substance for addition to the spinning bath is lauryl pyridinium sulphate.  Substances to be introduced into the spinning solution must be sufficiently stable to resist decomposition by the alkali of the viscose, and must possess the necessary solubility in the viscose.  Suitable substances include tetra-alkyl ammonium bases or derivatives thereof, e.g. dodecyl-triethylammonium iodide.  In an example, viscose is spun into a bath composed essentially of sulphuric acid, sodium sulphate, ammonium sulphate and small amounts of zinc sulphate. 0,04 per cent by weight of lauryl pyridinium sulphate is added to the bath.  In a second example, viscose solution containing 0,1 per cent of dodecyl triethyl ammonium iodide is spun through gold/palladium spinnerets into a spinning bath containing in addition to the usual ingredients considerable amounts, e.g. 5 per cent of zinc sulphate.  Specification 440,647 is referred to.
Patent GB-940503-A (GB)
Title: Improvements in and relating to transistor mixer circuits
IPC: H03D7/12
Filed: 1960-01-28
Abstract: 940,503. Transistor frequency-changing circuits. PHILCO CORPORATION. Jan. 28, 1960 [Jan. 28, 1959], No. 3103/60. Heading H3T. A frequency-changer circuit comprises a parallel resonant circuit tuned to the incoming radio-frequency signal and connected to the base electrode of transistor TR1, a source 60 of local oscillations connected to the emitter electrode, an output circuit tuned to the intermediate frequency connected to the collector electrode and a series-resonant circuit 50 tuned to the intermediate frequency connected between the base electrode and earth. By virtue of the circuit 50 a low-impedance path is provided for currents of intermediate frequency arising from rectification of the radio-frequency signals and local oscillations in the emitter-base diode of the transistor; as a consequence increased base current of this frequency can flow and an increased I.F. signal obtained in the collector circuit. The parallel resonant circuit tuned to R.F. is constituted by selected arrangements of inductors L1-L5 in parallel with capacitors 18, C1 and C2. The capacitors C1 C2 function as an impedance transformer providing a low-impedance output from the circuit for radio-frequencies. Switch tuning means ganged to R.F. resonant circuits 12, 14 and local oscillator 60 is provided to select the inductors L1-L5. A transistor R.F. amplifier stage 13 is provided.
Patent GB-969502-A (GB)
Title: Method and apparatus for injection molding
IPC: B29B13/00
Filed: 1961-01-26
Abstract: 969,502. Injection moulding machines. BORG-WARNER CORPORATION. Jan. 26, 1961 [Jan. 27, 1960], No. 3157/61. Heading B5A. An injection moulding machine for thermoplastic materials comprises a plasticizing chamber 11, an injection chamber 12, a plasticizng screw 24, a piston 19 for displacing all but a small quantity of the material from the chamber 11 into the chamber 12, and a piston (not shown) for displacing the material from the chamber 12 through a nozzle 15. Thermoplastic material in powdered form is metered out into cups fixed to an endless conveyer belt (Fig. 2, not shown), after having been dried and preheated in the metering device. The cups pass in turn to a dielectric heater, which plasticizes the material so that the charge is left with an outer unplasticized skin to facilitate handling. The charge is then fed into a shoot 45 and falls into the plasticizing chamber 11, the piston 19 being raised. The screw 24 is driven by a reversible variable-speed mechanism (not shown) through a pulley 38 fixed to a shaft 28 mounted in bearings 29. The shaft 28 is keyed to engage with keyways 30 on the screw shaft 26. The piston 19 is hydraulically actuated downwards to force the material 46 into the injection chamber 12, the material being worked and heated to a controlled degree by the screw 24. The end 50 of the piston 19 ensures that all but a small quantity of the material passes to the chamber 12. A rod 52 is now raised by an hydraulic cylinder (not shown) to raise the screw shaft 26 so that a reduced part 54 of the shaft allows communication between the chamber 12 and a bore 55 in the nozzle 15. An hydraulically operated piston (not shown) then forces the material from the chamber 12, out of the nozzle 15 into a mould (not shown).
Patent GB-153922-A (GB)
Title: Improvements relating to charge moistening devices for internal combustion engines
IPC: F02M1/00
Filed: 1920-02-02
Abstract: 153,922. Meyer, J. M., and Henry, P. Nov. 17, 1919, [Convention date]. Addition to 152,622. Charge, moistening; cylinders, pipes for.- A mixture of air and water, supplied from a device resembling a spray carburettor as described in the parent Specification, is delivered into the mixture passing through the induction pipe a through a pipe b provided with an extension c projecting into the induction pipe and having a lateral outlet c‹ which is preferably situated in the axis of the induction pipe. The extension c is carried by a collar d and is secured to the pipe b by a union e which grips collars b<1>, c<1> formed on the pipes b, c against the collar d. The parts b, c, d, e may be slidably mounted relatively to the induction pipe, being pressed inwards by a spring and withdrawn, to vary the degree of obstruction of the inlet pipe, by means such as a fork. Reference has been directed by the Cornptroller to Specification 116,568.
Patent GB-830308-A (GB)
Title: Improvements in or relating to spring clutch mechanisms
IPC: F16D27/105
Filed: 1958-01-30
Abstract: 830,308. Friction clutches. CURTISSWRIGHT CORPORATION. Jan. 30, 1958 [Jan. 30, 1957], No. 3210/58. Class 80 (2). In a coil-spring clutch of the kind wherein a coil-spring 20 is self-contracting to grip cylindrical surfaces on one-way rotating driving and driven members 1, 5, and disengagement is effected by projecting a stop 22 into the path of a projection 24 on a sleeve 25 to which the input end coil 28 of the spring is attached, to expand the spring coil, chatter due to possible re-engagement of the coil with the output member 5 is prevented by freeing the coil entirely from the output member by a freelyrotatable inertia sleeve 32, which, on stoppage of the input end 28 of the coil, over-runs, taking with it the attached output end coil 34 of the spring to expand the latter from the driven member 5, and then become latched by a rearwardly - facing shoulder 36 on the inertia sleeve 32 which rides under the stop 22 or an additional stop. The mass of the inertia sleeve 32 is so related to the input speed to just reach latching position. The stop 22 is projected by a spring and released by a solenoid to permit the coil-spring 20 to contract into clutch engagement. The input end 28 of the spring is angularly adjustable on the sleeve 25 by the provision of a series of receiving holes 28a in the sleeve.