baber/WOPTO huggingface dataset:
Patent GB-461494-A (GB)
Title: Improvements in or relating to thermionic voltmeters
IPC: G01R15/08
Filed: 1935-05-13
Abstract: 461,494. Pressure meters. WILLANS, P. W. May 13, 1935, No. 13987. [Class 37] In a thermionic voltmeter having a rectifier for converting the alternating potential to be measured into a unidirectional potential difference, which is set up across a high resistance and a selected fraction of which is applied from one of a number of tapping points on the resistance to the grid of a triode or other suitable valve having in its output circuit a galvanometer or equivalent instrument, there is provided a number of shunts for the galvanometer, &c., corresponding to the number of voltage ranges for which the voltmeter is designed. By varying the tapping point and the shunt, a full scale deflection on each range can be obtained and any departure from linearity arising for example from the valve characteristics can be corrected. The alternating potential difference which is to be measured is applied to the terminals 1 across a diode rectifier 3, in parallel with a high resistance 4. This resistance is provided with a plurality of tappings 5, 6 connected to points 11, 12 any selected one of which may be connected to the grid of a triode valve 13. The anode circuit of the valve 13 includes a galvanometer 15 connected to the junction point of two high tension batteries 16, 17 and provided with shunt resistances 19.. 21. The different tappings on the resistance 4 and the shunts 19, 20 co-operate to give a multi-range iiistrument, the tapping point and the shunt being changed simultaneously by the use of a single switch or of switches suitably coupled. The resistances 7, 8 and condensers 9, 10 serve as alternating current filters, while the battery circuit 14 serves to bias the cathode of the diode appropriately relatively to the triode valve. In operation, the switch 23 is first opened and shunt 21, which is of such value that when the correct working current for the valve 13 is flowing through resistance 18, the galvanometer reads a full scale deflection, is connected across the galvanometer, after which the resistance 18 is adjusted to give a full scale deflection. Switch 23 is then closed and the bias circuit 14 adjusted to bring the galvanometer to zero. The shunt 21 is then disconnected and, with the shunt 19 in circuit and using tapping 5, voltages of 2 and 1 volts are applied to the terminals 1 alternately, the bias 14 and resistance 19 being manipulated until the readings obtained are respectively full and half scale. Upon removing the applied voltage, the scale zero for this range is found. Similar adjustments are made with the shunt 20 and tapping 6, resulting generally in a second zero point. If the triode is used over a suitably limited range, the response of the voltmeter may be linear, but at low voltages, the departures of the diode and triode characteristics from linearity may cancel out, while for the higher voltages the range of voltage variation of the grid of valve 13 may be suitably reduced. In a modification, the separate diode and triode valves are replaced by a single diodetriode valve.
Patent GB-901412-A (GB)
Title: Improvements in or relating to printing plates
IPC: B41N3/00
Filed: 1957-05-02
Abstract: 901,412. Photomechanical printing plates. FIELD, A. E. Aug. 1, 1958 [May 2, 1957], No. 13997/57. Class 98 (2). A printing plate has a surface comprising printing elements in half-tone pattern and which elements are etched or otherwise treated all over to form cells for receiving and holding ink. Production thereof may be by initially etching or otherwise treating the whole surface of a plate to form cells, sensitizing, exposing through a half-tone negative or screen for resist formation, and etching away the non-printing areas. In use the greater amount of ink available on the plate permits satisfactory printing on brown or obscurely coloured paper, and colour printing on ordinary newspaper is referred to. Other methods of forming the printing plates are indicated. Specification 824,769 is referred to.
Patent GB-682621-A (GB)
Title: Improvements in locks
Inventor: SPEGELSTEIN EMANUEL
IPC: E05B65/50
Filed: 1950-06-06
Abstract: 682,621. Hasp locks. SUPER METAL STAMPINGS, Ltd. June 1, 1951 [June 6, 1950], No. 14141/50. Class 44 A hasp lock e.g. for an attachÚ-case comprises a bolt 5, Figs. 1 and 2, slidably mounted between a front plate 1 and a back plate 4, a locking slider 11 mounted on the bolt for projection by means of a key into an opening 24 in the back plate and a tumbler member 28 on the bolt mounted to rotate as the slider moves and having a nose 31 co-operating with the arm of a spring 32 for retaining the slider in the locking or releasing positions. The bolt has flanged edges 9 gapped at 10 to allow the slider to project into the locking position. The latching nose 6 of the bolt traverses the hasp receiving slot 2 of the front plate. The spring 32 is located on a boss 33 of the bolt and the other arm bears against a lug 34 of the back plate to urge the bolt to the latching position. The slider has tongues 19 projecting through a slot 20 in the bolt to guide the slider and coact with the blade of a key inserted to shift the slider. A tooth 25 on the slider engages between teeth 26, 27 on the tumbler, an arm 29 of which moves between stop lugs 30 on the bolt as the slider moves from one extreme position to the other. The bolt is retracted by a knob sliding on the front plate and having lugs entering holes 35 in the bolt and bent over. The lock is secured to the case by tongues 17 on the back plate passed through holes therein and bent over. Specification 641,060 is referred to.
Patent GB-985408-A (GB)
Title: Safety intercommunication devices for doors
IPC: H04M1/02
Filed: 1963-04-09
Abstract: 985,408. Telephone sets; interconnection systems. G. S. ONG, and A. S. NAIR. April 9, 1963, No. 14188/63. Drawings to Specification. Headings H4J and H4K. Two microphones and two receivers are mounted on a door such that one of each pair is directed to one side of the door and the other one of each pair is directed to the other side of the door whereby the occupant and a visitor to a house may communicate with each other without opening the door. A two-stage transistor amplifier having a volume control may be connected in each of the microphone-receiver circuits, the amplifier being energized from a local battery or a rectified alternating current source. The exteriorly directed microphone and receiver are preferably protected by means of a metal grill.
Patent GB-1386544-A (GB)
Title: Process for extruding composition of thermoplastic resin containing high content of inorganic filler
IPC: B29C48/40
Filed: 1973-03-23
Abstract: 1386544 Thermoplastic resin compositions MITSUBISHI PETROCHEMICAL CO Ltd 23 March 1973 [23 March 1972] 14192/73 Heading C3P Extruded compositions of thermoplastic resin and filler are prepared by mixing large particles of thermoplastic resin or thermoplastic resin and filler with small particles of thermoplastic resin and small particles of inorganic filler and extruding the mixture, said large particles being such as will pass a screen of mesh size 20 x 20 mm. but not a screen of mesh size 1 Î 1 mm., said small particles being such as will pass a 20 Tyler mesh screen and the ratio of total volume of large particles to total volume of small particles is 10 to 10,000 : 1 and overall content of inorganic filler being 30 to 90 weight per cent. The resins in the large and small particles may be the same or different, and may be polyethylene, polypropylene, ethylene/ propylene copolymer, polystyrene or polyvinyl chloride. The filler may be talc, calcium carbonate, titanium dioxide, barium sulphate, asbestos, diatomaceous earth, clay or silica. The compositions may be extruded to form moulding pellets, or directly to form sheets, pipes and other extended articles. Many examples are given describing the mixing of large and small particles of polypropylene with talc, calcium carbonate, titanium dioxide and talc/ titanium dioxide mixture; large particles of polyethylene with small particles of polypropylene and calcium carbonate; and large and small particles of ethylene/propylene copolymer, polyethylene and polyvinyl chloride with calcium carbonate.
Patent GB-185718-A (GB)
Title: Improvements in the manufacture of threads from viscose solutions
IPC: D01F2/08
Filed: 1922-05-20
Abstract: To render innocuous the sulphuretted hydrogen formed during the spinning of filaments from viscose solutions, oxidizing-agents, belonging to the class of per-acids or per-salts, are added to the spinning-bath.  For example, to an acid spinning bath sodium persulphite may be added; or the persulphate may be formed by electrolysis of the bath itself.  The process is particularly applicable to the spinning of unripened viscoses prepared from unripened alkali-cellulose, as described in Specifications 135,205, 152,349, 152,350, and 152,351; and especially to the production of very fine threads from such solutions by a drawing-out process.
Patent GB-1168568-A (GB)
Title: Mixed Pigment
IPC: C09C1/16
Filed: 1967-03-29
Abstract: 1,168,568. Basic lead sulphate/carbonate pigments. OSKAR NEYNABER & CO. A.G. 29 March, 1967 [6 April, 1966], No. 14277/67. Heading C4A. Mixed pigments of basic lead carbonate and basic lead sulphate are produced by adding H 2 SO 4  and CO 2  to an aqueous lead monoxide slurry in amounts less than the stoichiometric equivalents of the monoxide, separating washing and drying the coprecipitate, and thereafter submitting it to a heating step at 150-300‹ C. in the presence of one or more decomposition catalysts. The catalysts may be C 1 -C 6  carboxylic acids, e.g. acetic or propionic acids, or lead salts thereof. Preferred mixtures contain 50-90% by wt. basic lead sulphate.
Patent GB-938414-A (GB)
Title: Process for dyeing fibres, textile materials or foils of linear polyesters
IPC: D06P3/54
Filed: 1960-04-22
Abstract: Fibres or foils of high molecular linear polyesters which have been modified in their dyeing properties by the action of chemically reacting substances as described in Specifications 855,546, 903,913 or 938,413 are dyed with disperse dyestuffs in an aqueous dyebath in the usual manner but without the addition of carriers, a neutral inorganic salt such as sodium chloride, magnesium sulphate, sodium sulphate or calcium chloride being added in portions to the dyebath during the process.  Dyestuff absorption is improved when the dyebath is partially evaporated during the process.  Deeper penetration of dyestuff is achieved when the dyed material is subjected to a dry heat treatment.
Patent GB-311343-A (GB)
Title: Improvements relating to pipe branches
IPC: F16L41/12
Filed: 1929-05-09
Abstract: 311,343. Aubourg et Baillon. May 9, 1928, [Convention date]. Branches and mains, connecting; joints formed by welding.-A branch pipe 1 is connected to a main 4 by providing the end thereof with a forged flange 2 which is welded to the main at its periphery 3 as shown. A reinforcing sleeve 5, having an opening with a raised rim 6 which is adapted to surround the branch and is welded thereto at 8, is then applied to the main and secured thereon by welding at its ends 9, 9<1>. The sleeve is formed from a steel plate which is bent around the main and has its edges welded together at 7.
Patent GB-470203-A (GB)
Title: Improvements relating to direct electric current traction equipments arranged for regenerative braking
IPC: H02K47/16
Filed: 1936-05-22
Abstract: 470,203. Control of D,C. motors. GRAY, W. T., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. May 22, 1936, No. 14566. [Class 38 (iii)] Regenerative braking.- In a traction system in which the motors are supplied through a metadyne transformer, and in which provision is made for regenerative braking, a speed sensitive device driven by the train axle is arranged, when the speed falls below a predetermined value, to cut off the excitation of the metadyne and main motors, and also to disconnect the metadyne from the supply, means being provided for rendering the speed sensitive device ineffective during motoring. The speed sensitive device may be a centrifugal device or a generator acting through a relay. The motors may be connected to the metadyne as described in Specification 400,416, and during regeneration master controller segments RC are closed to energize a line switch LS and a switch ES in the circuit of the motor fields and the metadyne variator winding. When the motor speed falls below a predetermined higher speed an auxiliary speed sensitive device closes contacts C1 to energize a coil PB and cause partial application of the mechanical brakes, and when the speed falls to a predetermined lower speed contacts C2 open and contacts C3 close, the switches LS and ES being de-energized and a coil FB energized to effect full application of the mechanical brakes. During motoring contacts IC are effective to open the circuits through contacts C1, C3, and to shunt the contacts C2. Specification 403,464, [Group XXXV], also is referred to.
Patent GB-1109432-A (GB)
Title: Compositions based on polyimidazole resins and the production process
Inventor: GIULIANI PIERRE
IPC: C08G73/18
Filed: 1965-04-06
Abstract: A primary aromatic tetramine having two pairs of ortho NH2 groups is partly condensed with an aryl diester of an aromatic dicarboxylic acid in an inert polar solvent until a polymer having an inherent viscosity (as a 0.5% solution in dimethyl sulphoxide at 25 DEG  C.) of 0.04 to 0.30 is obtained and the resulting solution is used to impregnate a reinforcing material which is then heated to eliminate solvent and complete the polycondensation.  Before impregnation the viscosity of the solution may be adjusted to 10 to 1000 cS/50 DEG  C. by addition or evaporation of solvent.  In all the examples the reinforcing material is glass fabric which after impregnation is dried and final condensation effected under heat and pressure to give laminates of 16 or 21 layers.  In Example 3 the fabric is coated with vinyl silane.  Specified amines, esters and solvents are 1,2,4,5-tetraamino benzene, 2,3,6,7-tetraaminonaphthalene, 3,31 - diamino benzidine, and 3,31,4,41 - tetraamino diphenyl-ether, - methane, -sulphide and -sulphone; the phenyl esters of various isomeric phthalic and pyridine, naphthalene, pyrazine, furan, quinoline, thiophene, diphenyl, diphenyl ether and diphenyl methane dicarboxylic acids, and dimethyl formamide, dimethyl sulphoxide, N-methyl pyrrolidone, phenol and cresol respectively. Other reinforcing materials mentioned are asbestos, pulverized silica, carbon fibres and metal fibres or fabrics.
Patent GB-1304047-A (GB)
IPC: H01H51/22
Filed: 1970-03-25
Abstract: 1304047 Electromagnetic relays THOMSONCSF 25 March 1970 [27 March 1969] 14588/70 Heading H1N A bi-stable electromagnetic relay has a base 20 on which contacts 8, 10, 11, 14, 16, 18 and terminals 62, 63, 64 are mounted below a bridgeshaped member 21 having lugs 210 attached to the base 20 and pivotally supporting the relay armature 4 on a spindle 211. Polepieces 6, 7 are welded to lugs 212 of the member 21 and the ends of a core 19 seat in recesses 218, 219 of the polepieces 6, 7. Two oppositely acting coils 24, 25 surround the core 19 and a permanent magnet 19, having like poles at its ends extends between the polepieces 6, 7. Pins 12, 17 attached to the armature 4 extend through holes 220 in the member 21 to engage respective movable contact blades 8, 14 which may be made of a silver, magnesium, nickel alloy and have backing springs 205, 206.
Patent GB-815872-A (GB)
Title: Method and apparatus for making helical conveyor blades
IPC: B21H3/12
Filed: 1957-05-08
Abstract: 815,872. Coiling. MAYRATH, T. May 8, 1957, No. 14617/57. Class 83 (4). A helix is formed from flat metal strip by first curving the strip in its own plane, then squeezing the curved strip at its outer edge to increase its curvature and then stretching the curved strip in a direction transverse to its plane of curvature to form the helix. Steel strip 10 is guided between plates 12, 14 and rollers 16, 18 and flanged roller 20 to an adjustably offset roller 22 which causes the strip to curve in its own plane. The curved strip is then fed by and through rolls 26, 28 at least one of which is driven, having conical working faces 30, 32 the pass between which diverges towards the tips of the said faces, the spacing and divergence of the rolls being adjustable. The outer edge of the strip is thus squeezed and elongated more than the inner edge to increase the strip curvature. The curved strip is then bent out of its own plane by an offset roller 48, carried on an adjustable arm 50 and bearing against the inner edge of the strip. The pitch of the helix thus formed is finally determined by a guide pin 60 engaging the inner edge of the strip and carried by a part 64 adjustable longitudinally of the helix. The helix thus produced may be welded to a central shaft to form a screw type conveyer. The initial curve may be effected by hand and the squeezing by hammering.
Patent GB-304548-A (GB)
Title: Lead bearing-metals
IPC: C22C11/02
Filed: 1928-05-18
Abstract: 304,548. Abel, E. May 18, 1928. Alloys.-Lead bearing-metals contain less than 0.01 per cent of rubidium or caesium or both, or contain rubidium or caesium or both and also sodium. One or more of the following elements may also be present: the other alkali metals, alkaline earth metals, aluminium, beryllium cadmium, cobalt, copper, nickel, bismuth, zinc, tin, antimony, arsenic, phosphorus, sulphur, selenium, and silicon. Specification 22199/94 is referred to.
Patent GB-388263-A (GB)
Title: A new or improved coach screw for railroads
IPC: F16B35/00
Filed: 1932-05-24
Abstract: 388,263. Coach-screws. BIASI, B., 29, Chemin Meney, Grenoble, Isere, France. May 24, 1932, No. 14747. [Class 89 (ii).] A coach-screw has a detachable head 2 which is locked in place by a cotter 5. In a modification, Fig. 3, the screw has shoulders 9 which engage recesses 8 when the head is partially turned, the latter being then locked by a square bar 11, engaging corresponding recesses in the head and screw. In a further modification a screwed head is locked by a split pin.
Patent GB-936687-A (GB)
Title: Improved roof drain
IPC: E04D13/04
Filed: 1961-04-24
Abstract: 936,687. Roof drainage. J. S. NEWMAN. April 24, 1961, No. 14795/61. Class 33. A roof drain structure comprises a cupshaped integral drain body 10, with an outlet fitting 11 at the lower end and an outwardlyflaring lip 12 at the upper end; at least one stepped ledge portion near the lip 12 around the body 10, supporting a strainer 28 registering with the fitting 11, of stepped-dome formation and of reduced diameter, even at its maximum, in relation to the body 10, to form a space therebetween; and sealing means associated with the body 10 to secure it in position in a roof. The sealing means comprises a clamp ring 15 as shown, which overlies the lip 12, a roof covering 27 being therebetween. A gravel stop ring 22 is made integral with the ring 15 to restrain entry of e.g. gravel into the body 10, detachable clamp members 16 interengaging the body 10 and ring 22 to draw the latter towards the lip 12. Around the lower end of the strainer 28 is a perforated flange 31, acting as a filter, which is maintained just clear of the body 10, the latter having a pressure ring 24 bolted to it, which with the lip 12 encloses a portion of the roof decking 26.
Patent GB-289659-A (GB)
Title: Improvements in or relating to protective coverings for tanks, pipes, and the like
IPC: B64D37/06
Filed: 1927-06-02
Abstract: 289,659. Poberejsky, J. June 2, 1927. Metal pipes. - A protective selfsealing covering for a pipe &c., 1 comprises corrugated layers 2, 4 of material which will not absorb moisture readily, and layers 3, 5 of rubber. In a modification, the separate corrugated layers are replaced by corrugations on the rubber layers.
Patent GB-590063-A (GB)
Title: Improvements in and relating to gun mountings
IPC: F41A27/06
Filed: 1944-08-03
Abstract: 590,063. Gun mountings. BOULTON PAUL AIRCRAFT, Ltd., NORTH, J. D., and MILLARD, D. J. Aug. 3, 1944, No. 14826. [Class 92 (i)] A rotatable gun turret, for use on aircraft or other vehicles, includes a gun 6 carried on front and rear-pivotal supports and is rocked about the rear pivoted support when elevated above and about the front support when depressed below the normal position. In the construction shown four mounting units 2 ... 5 are provided for a pair of guns on a turret ring 1, each support having open top bearings for front and rear pivot pins 8, 9, on the gun cradles 7. Links 12, 13 connect the front and rear units of each gun, and a torque tube 14, acted on by a hydraulic jack 15, connects the front units 2, 4. The gun is elevated about the rear units as shown in Fig. 3 when the units are rotated in a clockwise direction, and about the front units when rotated in the opposite direction. In a modification each gun is supported on two hydraulic jacks one of which is operated to rock the gun when above the normal position, and the other when the gun is below the normal position. The inoperative jack in each case constitutes the pivot about which the gun is rocked.
Patent GB-518167-A (GB)
Title: Improvements in pile fabrics and processes of finishing the same
IPC: D06M13/12
Filed: 1938-05-18
Abstract: 518,167. Waxy emulsions. CHARBIN, R. May 18, 1938, No. 14858. Convention date, May 18, 1937. [Class 1 (i)] [Also in Groups IV and VIII] Pile fabrics are treated with an aldehyde substance and before, during, or after this treatment they are subjected to treatment with a waxy or paraffin emulsion, the dispersed particles of which are positively charged by the presence of an amphoteric metal salt of a weak acid such as aluminium formate or a similar zinc salt. The dispersion may be maintained by the presence of a fatty alcohol amino sulphate- or sulphonate. Vegetable waxes, beeswax, Japan wax, or paraffin wax may be used in forming the emulsions. The emulsions may contain sulphonated olive oil, sulphated or sulphonated higher fatty alcohols which may also include amido or amino radicles and which may be derived from compounds containing lauryl, oleyl, palmityl, or ricinoleyl groups.
Patent GB-698981-A (GB)
Title: Improvements in or relating to variable electrical resistance type pick-up devices
Inventor: SMITH JAMES FRANCIS
IPC: G01F23/30
Filed: 1951-06-22
Abstract: 698,981. Electric indicating systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June 23, 1952 [June 22, 1951], No. 14936/51. Class 40 (i). A variable resistance pick-up comprises a rotatably mounted bobbin having a resistive path on its curved surface to which current is led by brushes and slip rings. A conductor is wound around the bobbin in contact with the resistive path and arranged to be wound or unwound from the bobbin by relative displacement of two members. As shown, the bobbin 14, rotatably mounted in a member 12, has two helical grooves 18, 19, of opposite sense, in which a resistance wire 19 is wound and fed with current by brushes 22, 23 and slip rings 24, 25. Wound over and in contact with the resistance wire 19 is a conductor wire 20, both wires 19, 20 being soldered to a pin 21 projecting from the bobbin. The conducting wire 20 extends from the opposite ends of the bobbin to a spigot 15 secured, press-fastener fashion, to a member 11 so that relative movement of members 11, 12 away from each other in the direction A unwinds the conductor 20 from the bobbin against the bias of a spring (not shown), so that the variation in effective resistance between the brushes 22, 23 is dependent on the displacement.