baber/WOPTO huggingface dataset:
Patent GB-241992-A (GB)
Title: Improvements in variable electric condensers
Filed: 1924-07-30
Abstract: 241,992. Woods, R. July 30, 1924. Condensers of the kind comprising a rotatable casing containing a conducting liquid and carrying a metal foil electrode separated from the liquid by an insulating wall, so that variation of capacity is effected by rotating the casing to bring the foil more or less into opposition to the liquid, have the casing in the form of an insulating disc formed with a shallow cylindrical recess which, when closed by a mica or like disc, forms a chamber for the liquid, the foil being secured to the outer side of the mica disc. The vulcanite disc 1 has a recess 2. and a shoulder 5 on which is seated a mica disc 6 carrying a semicircular piece of copper foil 9 co-operating with mercury 8. Screws or pivots 3, 10 extend through the disc 1 and its vulcanite cover 7 and are in engagement with the mercury 8 and foil 9, respectively. The disc 1 is supported by means of balls 12 projecting from bushes 13 in brackets 14, the bushes also carrying terminal tags 16. The casing is rotated by means of a friction wheel 18 on a spindle 19 that is rotable and slidable in a bush 20, coarse adjustment being effected by pushing the spindle so as to make the wheel 18 engage the casing near its centre whereas for fine adjustment the spindle is pulled out so that the engagement is at the periphery. A spring-pressed plate 22 sliding on rods 23 ensures firm engagement between the wheel 18 and the casing, and stop pins may be provided to limit the rotation of the container. The wheel 18 may bear on the periphery of the casing instead of on its side, and means for indicating the adjustment may be provided. The Provisional Specification further describes a condenser in which the capacity is varied by varying the amount or level of mercury in a container by operating a plunger.
Patent GB-661336-A (GB)
Title: Improved means for making roads
IPC: E01C19/21
Filed: 1949-07-11
Abstract: 661,336. Treating roads. VALANTIN, L. July 11, 1949 [July 27, 1948], No. 18301/49. Class 107 Apparatus for tarring and gravelling roads comprises a tipping-lorry for gravel towing a trailer unit carrying a tar distributer 12 and a gravel hopper 2 with distributer 3, the distributer 12 being located close to and in front of the distributer 3 and the unit towing a lorry fitted with a tar tank 6 and a compressor 8, the arrangement being such that tar is forced through a pipe 9, a flexible coupling 10 and a pipe 11 to the distributer 12 and gravel is tipped directly into the hopper 2 which holds a reservoir of gravel so that the tipper may be lowered under, e.g. low bridges without interrupting the gravel supply.
Patent GB-775112-A (GB)
Title: Improvements relating to the construction of overhead electric traction systems
Inventor: RITCHIE JAMES
IPC: B60M1/23
Filed: 1954-06-23
Abstract: 775,112. Ropes &c. BRITISH INSULATED CALLENDER'S CONSTRUCTION CO., Ltd. June 22, 1955 [June 23, 1954; July 28, 1954], Nos. 18417/54 and 22089/54. Class 109. [Also in Group XXXVI] A rope for use as a tensioned support member in an overhead electric traction system is made of cords or rovings of non-metallic inorganic fibres of high tensile strength, such as glass or lava fibre, all the individual strands or rovings being impregnated with, and the rope having a coating of, a water-repellant insulating material such as a silicone varnish, an epoxy resin, a polyvinyl chloride compound, a synthetic rubber or polyethylene. The rope may be made by twisting together a number of cords, or by bunching the cords 5 and applying a whipping 6 of impregnated glass fibre yarn. The cords 5 are pre-impregnated with P.V.C. and an overall sheath of P.V.C. is applied. A support member may be made by winding a length of impregnated cord or roving 7 about spaced thimbles 8, 9 and applying a binding thread 10 and a resin coating. An end clamp for a rope may comprise a tapered hollow body 28 (Fig. 8) having rigid arms 29 carrying pin 30. The rope 32 passes round a tapered inner member 31 and the tension in the rope causes it to be clamped between the member 31 and the body 28.
Patent GB-483119-A (GB)
Title: Improvements in or relating to the separation of alkali or alkaline earth reacting ingredients from alloys thereof with lead or tin or lead and tin
IPC: C22B25/06
Filed: 1936-08-11
Abstract: The process described in the parent Specification is applied to the removal of one or more elements capable of reacting with an alkali or alkaline earth metal, and no one of which elements is antimony, from alloys thereof with lead or tin or lead and tin. The element may be arsenic.  Tin may be separated from the slag by the process described in Specification 469,519.
Patent GB-279929-A (GB)
Title: Improvements in or relating to diaphragms and the like for sound producing instruments such as telephones and gramophones
IPC: H04R7/18
Filed: 1926-07-27
Abstract: 279,929. Bishop, C. July 27, 1926. Diaphragms.-A circular or strip diaphragm for sound producing instruments is made from sheet material of natural cork or from compressed cork granules, the diaphragm being mounted under an initial tension, which is preferably adjustable. With thick diaphragms of compressed material, the initial tension may be dispensed with. A thin coating of metal may be applied to one or both faces of the cork. The coatings may completely cover the cork, may be applied in comminuted form, or may be confined to the central region of the diaphragm. The diaphragm which is of substantially uniform thickness and may be slightly domed, can be made with portions of different densities. Figs. 9 and 10 show a method of forming a diaphragm which is most highly compressed at the centre, the density decreasing gradually from the centre to the periphery. A short cylinder u, which may be of cork cut to the required form or of granulated cork, is compressed in a mould s, t to the bi-concave form shown in Fig. 10 after which the mould and its contents are heated. After removal from the mould, the diaphragm is trimmed down to uniform thickness as shown in Fig. 12. Figs. 13 and 14 show a modified process in which the material u is originally of bi-convex form, the bottom of the mould and the end of the plunger being flat. Diaphragms may also be formed in which the density gradually increases from the centre to the periphery, or with radially disposed portions w, Fig. 15, or central and annular regions of greater density. Various means are described for mounting the diaphragm under initial tension. Fig. 2 shows a diaphragm a secured to a cork or other deformable ring b, the required tension being secured by means of a split ring c sprung into position in the ring b. Fig. 3 shows a modification in which an adjustable tension is obtained by forcing a rigid ring e more or less into the ring b by means of the screw cap f of a telephone instrument. In this construction, an armature g is secured to the diaphragm, 'the armature being, if desired, covered with a thin laver of cork h. In a further modification, Fig. 5, the diaphragm a is first clamped between rings k and then pressed more or less against an annular ridge m by the screw cap f. In the construction, Fig. 6, a sheet of cork a, n, is clamped between rings p the required tension being applied by pressing the material against an annular ridge q. Whilst the material is in this taut condition a non-yielding ring r is secured thereto as shown, after which the rings p are removed and the material n exterior to the ring r cut away leaving the diaphragm a secured under tension to the ring r.
Patent GB-504327-A (GB)
Title: Method of duplicating band sound records produced by the needle sound recording method
IPC: G11B3/70
Filed: 1938-06-23
Abstract: 504,327. Moulding sound records. DANIEL, K. June 23, 1938, Nos. 18701 and 18702. Convention dates, June 26, 1937, and Aug. 18, 1937. [Class 87 (ii)] Relates to the reproduction of sound-records of band or strip form. The original record is provided with grooves parallel to its lateral edges and is used to form a matrix d, Fig. 3, having projections f. The matrix together with a band g, Fig. 4, is then passed between pressing rollers i, k, the matrix being guided by guides g co-operating with the projections f. In a modification the matrix d, Fig. 6, is guided in helical form on to a roller l by means of the projections and guides, and the band h to form a duplicate record is passed between that roller and a roller m. The edges of the matrix may be trued by a cutting or grinding device guided by the projections f.
Patent GB-587137-A (GB)
Title: Improvements in or relating to the testing of electrical insulation
IPC: G01R31/327
Filed: 1944-10-02
Abstract: 587,137. Indicating faults ; power factor and resistance measurements. REYROLLE & CO., Ltd., A., and LYLE, A. G. Oct. 2, 1944, No. 18835. [Class 37] The condition of insulating material situated between a conductor and its metal sheath is ascertained by means of a power factor meter which measures the phase angle between the voltage in the conductor and the capacity current flowing between the conductor and its sheath. A conductor A is insulated from two sections B, B<1> of a metal sheath by condenser type bushings F, G. The two sections B, B<1> which are insulated from each other, are connected to the current coils of power factor meters H, the other ends of the current coils being connected to earth. The voltage coils of the power factor meters are energised by the low tension side J<1> of a transformer J having its high tension side J<2> connected to the conductor A. Any deterioration in the condition of the insulation produces an increased deflection of the power factor meter which is an indication of the deterioration of the insulation. Each power factor meter may also operate a relay and thus isolate a particular section of the conductor. This system can be used for any number of phases, and one power factor meter only is required for testing every section of the sheath, to which it may be connected by a manually operated or continuously driven selector switch.
Patent GB-1350638-A (GB)
Title: Illuminating system for a copying machine
IPC: G03B27/54
Filed: 1971-06-03
Abstract: 1350638 Illumination systems ADDRESSOGRAPH-MULTIGRAPH CORP 3 June 1971 [26 June 1970] 18866/71 Heading G2A In a copying machine, e.g. an electrophotographic copier, an illuminating system 12 comprises upper and lower chambers 14, 62 respectively, tubular lamps 54, 56, a lens 84 and a reflector 86. An original to be copied is positioned on a specular reflective surface, as shown, a glass platen 30. The chamber 14 is of rectangular cross section and has vertical side walls the interior surfaces of which are diffusely reflective, while the chamber 62 has two vertical side walls and two sloping side walls 66, 70. The lamps 54, 56 are positioned outside the field of view of the lens 84. All of the interiors of these side walls are also diffusely reflective; but there is preferably included a darkened portion 82 to absorb light from the lamps which would normally be reflected directly onto the image plane. In another embodiment (not shown) the image plane may be parallel to the platen 30, in which case mirror 86 and portion 82 are omitted.
Patent GB-280827-A (GB)
Title: Improvements in the combustion chambers of internal combustion engines
IPC: F02B19/14
Filed: 1927-07-16
Abstract: 280,827. Fielding, S. J. July 16, 1927. Addition to 277,244. Cylinders receiving liquid fuel.-In a Diesel engine cylinder having a combustion chamber comprising two compartments E, F connected by a narrow passage I as claimed in the parent Specification, the outer compartment F, containing the fuel nozzle G, has flattened side walls, parallel to the plane of the paper, while the dome shaped head and flat base are maintained. The compartment E accommodates s inlet and exhaust valves C and both compartments are surrounded by a cooling water-jacket H.
Patent GB-1130950-A (GB)
Title: Corrosion-resistant clad metal strands
IPC: B23K20/04
Filed: 1966-04-29
Abstract: 1,130,950. Rolling; welding by pressure; producing rods. TEXAS INSTRUMENTS Inc. 29 April, 1966 [3 May, 1965], No. 18971/66. Headings B3A, B3M and B3R. [Also in Division C7] A method of making clad metal strands comprises moving a rapidly oxydizing metal core 1 coated with a slowly oxidizating metal 5 between two strips 3 of protective metal and through a heated chamber 11, to a pair of rolls 13 where the strips are solid-phase bonded to and around the core. The core 1 of stainless steel is cleaned and electrolytically coated with a layer of copper, silver, gold or any suitable chromium free metal in an acid bath after which it is fed slidably through a contact 9 into a reducing atmosphere of dissociated ammonia. The strips 3 of cupronickel or titanium are fed slidably through contacts 7. One of the rolls 13 is connected through an electrical control system 17 to the contacts 7, 9 so that when the core and the strips contact this roll a circuit is completed and by means of the control system 17 the temperature of the core and the strips can be adjusted. The rolls 13 nip the edges (23) of the strips 3 together, Fig. 3 (not shown), and the flashes 27 may be cut off by the rolls or later by any suitable means known in the art. The cladded strand is cooled as it leaves the rolls in a water cooled retort 31 containing a nitrogen atmosphere and by a water spray 33.
Patent GB-1454838-A (GB)
Title: Heat-shrinkable tubing
IPC: B29C48/12
Filed: 1974-04-30
Abstract: 1454838 Moulding heat shrinkable tubing; seaming non-metallic sheet material SUMITOMO ELECTRIC INDUSTRIES Ltd 30 April 1974 [10 May 1973 30 May 1973] 18982/74 Headings B5A and B5K [Also in Division H2] A length of cross-linked heat shrinkable plastics tube comprises a single circular bore from which branches a pair of circular bores, the walls of which may be separate, or connected together along their lengths. The cross-linking is effected by high velocity electron beam irradiation, and the plastics of the tube may comprises polyethylene, ethylenevinyl acetate co-polymer, or polyvinyl chloride. The tube maybe employed for electrical sheathing as in Fig. 4 (not shown), where the single bore and a connected pair of bores are respectively heat shrunk about a neon tube, and its pair of lead wires. Alternatively Fig. 5 (not shown) the single bore may be heat shrunk about a shielded wire comprising a pair of insulated wires shielded by conductors, with the shielding wires passing through one of the pair of bores shrunk therearound and the insulated wires passing through an opening provided upon cutting off the portion of the tube defining the other of the pair of bores. The tubing, e.g. of polyethylene is extruded as a single bore, the opposed walls of which, at longitudinally spaced intervals, are pressed and fused together intermediate the width of the tube to alternately form the single and pair of bores, during passage from the extrusion die through a nip defined by a driven cylindrical roller 6, and blades P spaced apart around the periphery of a driven roller 5. The blades P may be sharp to sever the junction of the pair of bores. The tube is cooled, in being drawn by a roller pair through a cooling bath, and is wound on a storage roller. After irradiation, the tube 11 is increased to that from which heat shrinkage occurs, by being drawn by pinch rollers 17 through a bath of heating medium, e.g. of ethylene glycol, which heats it to a temperature at or above its softening temperature, followed by diametrical expansion and cooling during passage through the elongate bore of a sizing means 13. The means 13 is cooled by water circulated at 14, 16, and inflation is effected by vacuum applied from 15 through perforations in the bore of the means 13, and which may be assisted by pressure within the tube 11. The bore of the means 13 is sealed to the tube 11  at its inlet and outlet, by seals each comprising a plurality of superposed thin plastics fins. Rollers 20 draw the tube 11 through a bath 19 which rinses away the heating medium.
Patent GB-572526-A (GB)
Title: Improvements in and relating to tobacco feeding mechanism for cigarette making machines
IPC: A24C5/39
Filed: 1943-11-16
Abstract: The apparatus described is identical with that described in Specification 572,515 and the invention is directed to a single refuser element cooperating with a tobacco feed drum to remove excess tobacco therefrom, the element being given repeated forward and backward movements in the same direction as and in the opposite direction to the direction of advance of the feed drum and the movements being in timed relation to the motion of the drum so that all the tobacco fed by the drum is subjected to two or more refusing operations.  The same portion of the refusing element performs these repeated operations.
Patent GB-681048-A (GB)
Title: Improvements in the control of the supply of liquid to washing and similar machines
Inventor: WALKER THOMAS BRADLEY
IPC: D06F39/08
Filed: 1950-08-01
Abstract: <PICT:0681048/III/1> Means for controlling the supply of liquids by means of a pump 18 to a washing, dry-cleaning or similar machine comprises a valve A, B (see Group XXIX) arranged between each liquid supply and the pump suction, the valves being arranged to open and close automatically when suction is applied and cut off respectively, thereby preventing flow of liquid from one supply system to the other.  The invention is described with reference to a washing machine supplied with hot and cold water through pipes a and b respectively, and a mixing valve (Fig. 2, not shown), which is operated either automatically by a thermostatic control or manually. Fig. 3 shows an alternative construction in which the mixing valve is replaced by a T-connection 21 and the operating cylinders of the valves A, B are linked to a pipe 17 through pipes a1, b1.  Pipes a1, b1 contain valves 22, 23 respectively, these being linked so that as one opens the other closes.  The setting may be done manually or, as shown, thermostatically by means of a thermostat element 24 in pipe 17 which operates a sealed liquid filled system including a bellows motor 25 and adjusting device 26, 27.
Patent GB-810965-A (GB)
Title: Improvements in and relating to apparatus for the detection of combustible gases in an atmosphere
Inventor: WALTON WILLIAM HENRY
IPC: G01N25/32
Filed: 1956-06-20
Abstract: In an apparatus for testing gases for the presence of a combustible gas, of the type in which the gas is passed with air in the region of a flame and any increase in the heat of combustion is measured, the supply of the gaseous fuel to the flame is accurately controlled under pressure above atmospheric. Preferably the butane or other fuel gas passes through two pressure controls, first a flexible bellows as a coarse control, and second a diaphragm having a needle control valve as an accurate control.  A suitable apparatus consists of a hollow base 10, Fig. 1, having an annular fuel tank 11 from which gaseous fuel is supplied at controlled pressure to a flame tube 21. Secured to the base 10 by a magnetic lock 14 is a flue system comprising a glass tube 45 surrounded by a brass sleeve 46 having a slot in its wall, an inner tube 15 surrounded at the top by two wire gauze cones 16, 17.  Air which may also contain the combustible gas under test enters through a ring 18 having adjustable inlets and flows along path A to the top of the chimney 20.  Fuel flows from the bottom of the annular tank through a capillary tube having a fine wire, to restrict the flow, through a pipe F mounted in a cup member 33 formed in a bellows 31.  The interior of the bellows is at atmospheric pressure through a tube 32, and the flow of fuel gas is controlled by a pin-valve member 48 fixed to the bellows cup.  The controlled flow of gaseous fuel then passes to a second regulator comprising a conical pin 34 and co-acting seating 35, the pin being actuated by a diaphragm 36 pressed <PICT:0810965/III/1> upwards by a spring 37.  When pressure of gas on the diaphragm increases, the pin is lowered decreasing the flow of gas.  The gas then flows through a temperature-responsive valve, in which an orifice is restricted by using two materials of different co-efficients of expansion.  A series of thermo-couples 44 are mounted in the tube 15 with their hot junctions in the gases above the burner, and their cold junctions in the path of the air and gas under test, which therefore measures the rate of heat production.  Specification 778,774 is referred to.
Patent GB-822472-A (GB)
Title: Improvements in or relating to jet propulsion nozzles
Inventor: BROWN DAVID MORRIS
IPC: F02K1/42
Filed: 1956-06-20
Abstract: 822,472. Jet propulsion nozzles. ROLLSROYCE Ltd. June 20, 1957 [June 20, 1956], No. 19181/56. Class 110 (3). [Also in Group XXXIII] A jet propulsion nozzle comprises a pair of members having a cross-section similar to that of part of the downstream end of the jet pipe and each of which is pivoted about an axis transverse to the jet pipe so that it is capable of being set in a first position on which it forms a smooth downstream in continuation of the jet pipe without reducing the cross-sectional area of flow, and in a second position in which its upstream edge lies inwardly of the wall of the jet pipe in which it divides the jet into separate streams. A cylindrical jet pipe 50 has a pair of part cylindrical members 51 mounted to pivot about an axis 52 from a first position, in which the members 51 form a smooth continuation of the jet pipe 50 to a second position, Fig. 2, in which the leading edge of each of the members is swung inwards until it lies between the jet pipe axis 53 and the periphery of the jet pipe. In the second position the members 51 divide the jet stream into three separate streams to produce a silencing effect. Preferably the outer streams diverge from the axial direction at an angle of 20 to 25 degrees. The members 51 may also be pivoted into a third position in which the trailing edges are in abutment. In this position the gas flowing through the jet pipe is deflected to flow in a reverse direction. In a modification, Fig. 4 (not shown) the leading edges of the pivoted members 51 and the trailing edge of the jet pipe are increased in thickness so that a convergent-divergent nozzle is formed.
Patent GB-477781-A (GB)
Title: Improvements in indicating instruments
IPC: G01D11/28
Filed: 1936-07-10
Abstract: 477,781. Indicating - apparatus. SPROULE, D. O., HUGHES, A. J., and HUGHES & SON, Ltd., H. July 10, 1936, No. 19182. [Class 106 (iv)] The portion of the cover glass of an indicating instrument through which the indications are viewed is inclined to the normal line of vision and a shield is provided to shield light rays which would otherwise be reflected by the inclined portion into the observer's eyes. In one form, Fig. 1, the cover glass 4 is in the form of a hollow conical frustum, the pointer 1 and scale 2 being viewed through the inclined sides 5. The light shield 6 has a blackened inner part 7. In another form, Fig. 5, the cover glass 4 is a solid frustum and the scale 2 is secured to the back of it and is illuminated by a lamp 9, situated in a recess in the cover glass and shielded from direct observation by a plate 10. Alternatively, Fig. 7, the cover glass 5 may have an opaque central part 12 formed as a reflector, a spherical reflector 14 being placed behind the lamp 9.