baber/WOPTO huggingface dataset:
Patent GB-429820-A (GB)
Title: Purifying zinc metal
IPC: C22B19/04
Filed: 1934-12-28
Abstract: 429,820. Distilling zinc. IMPROVED METALLURGY, Ltd., 95, Gresham Street, London.-(Assignees of Ginder, P. M., Peirce, W. M., and Waring, R. K. ; Palmerton, Pennsylvania, U.S.A.) Dec. 28, 1934, Nos. 37131 and 37132. Convention dates, Dec. 28, 1933. Addition to 395,602 and 409,531. [Class 82 (i)] Zinc is purified by the method of the parent Specification modified in that the zinc is transferred from the first to the second rectification stages as molten metal. Zinc vapour, for instance from a condenser 10, passes into a leadeliminating column 13, thence to a condenser 22 and finally to a cadmium-eliminating column 34. The columns 13, 34 are as described in the parent Specification except that the gas reservoir for the column 34 is replaced by a vent 55. The condenser 22 is connected to the column 13, Fig. 1, by a pipe 21 and to the column 34 by means of a well 25, overflow conduit 28, feed trough 29, needle valve 30 and charging-tray 33. Liquid seals are provided at 26, 32, a cleaning port at 27 and a vent at 23. In a modification, Fig. 2, the condenser is connected to the column 13 by a refractory conduit 56, heat insulated at 56<1>, a baffle 58 delivering any metal condensed in the conduit into a well 59 equipped with a skimming bar 6C and cleaning port 61. The con. denser comprises lateral passages 62, 63, cleaning ports 67 ... 70, and liquid seals 65, 66; reflux to the column 13 is provided by metal flowing from the condenser through a port 71 and needle valve 72. A modification of the column 13 is shown in Fig. 3, in which the pots 14 are contained in a flue 20 containing heating gases. Specification 392,361 is referred to.
Patent GB-1036198-A (GB)
Title: Improvements in or relating to arrangements for registering the position of moving vehicles
IPC: B61L3/12
Filed: 1964-09-11
Abstract: 1,036,198. Train position indicator. BROWN BOVERI & CO. Ltd. Sept. 11, 1964 [Sept. 14, 1963], No. 37361/64. Heading B7N. Positional information is signalled to a train as a coil 11 thereon passes over three coils 4, 5 and 6 disposed between the track rails at each trackside position A, B &c. The position is identified by supplying each track coil with one of three particular frequency signals selected from the seven different frequency signals generated in unit 1 and supplied to each trackside location via cable 2. The signals picked up by coil 11 are applied via tuned circuits 12, each tuned to one of the seven frequencies, to a decoder 13 which supplies an output indicative of the trackside position to a memory 13 or transmits it directly or on interrogation to a central station.
Patent GB-1071397-A (GB)
Title: Polyvinyl chloride compositions
Inventor: BENTON JAMES LIPP BROWN
IPC: C08K3/16
Filed: 1964-09-12
Abstract: A stabilized composition comprises a polyvinyl chloride homopolymer and/or a polyvinyl chloride copolymer containing at least 50% by weight of polymerized vinyl chloride, a fluorinating agent added thereto or to the monomer prior to polymerization, a chelating agent and an organo-tin compound.  The fluorinating agent is preferably added to the polymer prior to compounding and is preferably antimony trifluoride.  The chelating agents exemplified is a mixture of the tetrasodium salt of ethylene diamine tetracetic acid and N,N-di(2-hydroxyethyl) glycine.  The organotin compound exemplified is di-n-octyl tin di-iso-octyl thioglycolate.
Patent GB-874789-A (GB)
Title: Improvements in or relating to grabs for operating in long and narrow vertical bores
Inventor: BRADLEY NORMAN
IPC: G21C19/10
Filed: 1958-11-20
Abstract: 874,789. Lifting devices for handling articles. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 9, 1959 [Nov. 20, 1958], No. 37452/58. Class 78 (4). [Also in Group XL (a)] A grab for lifting fuel elements from channels in the core of a steam-cooled nuclear reactor comprises a cylindrical body 1 receiving a piston 3 supported by coaxial flexible tubes 10, 11 the piston being biased by a spring 7 against a stop ring 4 secured to the body 1 and the body 1 having a continuous bleed orifice 18. A shaft 15 attached to the piston 3 has a central bore 21 communicating with the tube 10 and carries pairs of lugs 14 having pivot pins 13 supporting three equispaced claws 12, slots 16<SP>1</SP> in the claws co-operating with pins 16 carried by lugs 17 integral with the body 1. The lower end of the shaft 15, Fig. 3, contains a tapering probe 24 biased against a valve seat 23 by a spring 26, and the lower end slidably supports a locating nose 29 biased by a spring 31 against a stop washer 28 secured to the shaft end. The tubes 10, 11 are wound over a hoist drum W, the tube 10 and annular space 11<SP>1</SP> between the tubes 10, 11 being connected to a steam condenser C. When using the grab to remove a fuel element, a valve 33 is opened to create a partial vacuum in the space enclosed by the piston and cylinder 3, 1 whereby the body 1 moves upwards due to the ambient steam pressure the lugs 17 moving the claws 12 to the open position and the spring 7 being compressed. The grab is lowered so that the end of the fuel element 29<SP>1</SP> is received -within the nose 29, further downward movement causing movement of the nose 29 on the shaft 15 and the probe 24 is lifted off its seat 23 by the element 291. A steam flow path is thus established through the bore 21 and tube 10 the steam pressure being indicated by an instrument 34 to provide a warning signal to the grab operator. The steam bleeding through orifice 18 is continuously evacuated to the condenser C. The valve 33 is now shut so that the pressure within the piston and cylinder builds up and eventually the spring 7 moves the body 1 downwards relatively to the piston and the claws 12 close upon the element 29<SP>1</SP>. A passageway 19 leading to the exterior of the body 1 is then in alignment with a passageway 20 leading to the bore 21 whereby a further warning is given to the operator by the instrument 34.
Patent GB-1191868-A (GB)
Title: Improvements in Wheel or Drum Drives
Inventor: LEE SAMUEL
IPC: F16H57/02
Filed: 1967-08-15
Abstract: 1,191,868. Winch drum drives. S. H. HEYWOOD & CO. Ltd. 2 Aug., 1968 [15 Aug., 1967], No. 37473/67. Heading B8B. [Also in Divisions B7 and F2] A drive unit for a wheel B of a crane trolley or a truck, or for a conveyer or hoist drum, rotatably mounted between supports A, comprises a motor B<SP>1</SP> mounted on one support A and driving a spindle b<SP>2</SP> coaxial with the wheel or drum, an input sun pinion d on the spindle b<SP>2</SP> meshing portions d<SP>1</SP> of stepped planets carried by the wheel or drum B, portions d<SP>3</SP> of the stepped planets meshing and reaction sun gear d<SP>4</SP> secured on a flanged sleeve b<SP>1</SP>. The wheel or drum is closed to contain lubricant for the gearing.
Patent GB-842455-A (GB)
Title: Improvements in or relating to coverings or roofings for buildings
Inventor: HOYAS AIME
IPC: E04D12/00
Filed: 1956-12-11
Abstract: 842,455. Roof &c., coverings. UNION DES LAMINEURS BELGES DE ZINC. Dec. 11, 1956, No. 37782/56. Class 20(4) A covering, e.g. zinc sheets, for a building is supported by steel netting stressed between the borders of the surface to be covered and fixed to intermediate supports, the netting being of highly tempered steel without a selvedge, or with a selvedge, of ductile steel, and having hexagonal meshes which are stretched to an elongated form after the netting has been secured to one border 6 of the surface to be covered and before being fixed to another and opposite border. The netting may be reinforced by a zig-zag support of stressed metal wire. The covering sheets are fixed by hooks 11. Apparatus for tensioning the netting is described.
Patent GB-1271284-A (GB)
Title: A secondary electron multiplier
IPC: H01J43/24
Filed: 1969-07-29
Abstract: 1,271,284. Electron multipliers. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 29 July, 1969 [9 Aug., 1968], No. 37903/69. Heading H1D. An electron multiplier comprises a cylinder 45, Fig. 5A, made of or coated internally with a secondary emissive resistive material and a coaxial repeller electrode 47 made of or coated with resistive material and adapted to produce an electric field with equipotential lines extending at an acute angle of preferably between 55 and 75 degrees to the secondary emissive electrode. In the arrangement shown, a potential gradient is established along the cylinder 45, and a similar gradient lower at each point is established along the repeller electrode 47 with the aid of auxiliary potential sources 36, 37. The secondary emissive material may be magnesium oxide or potassium chloride.
Patent GB-636192-A (GB)
Title: Improvements in current transformers
IPC: H01F38/30
Filed: 1946-12-30
Abstract: 636,192. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 30, 1946, No. 38048. Convention date, Dec. 29, 1945. [Class 38 (ii)] In a current transformer with a core having two parallel legs each carrying a primary winding, a metal reinforcing strap is wrapped round the primary winding assembly with its axis parallel to those of the legs. Both primary winding coils 4, 5 comprise four superposed conducting strips, which at one end are connected together and to terminals 6, 7. Two of the strips 13, 13<1> make a complete turn round one of the limbs of a wound core and end in projecting terminals 14, 14<1>, while the other two strips 11, 11<1> make one and a half turns and end in terminals lying on the surface of the coils. Insulation 12, 12<1> is placed between strips 11, 11<1> and 13, 131. The two coils are assembled together with insulation 16 between their adjacent faces and terminals 14, 141 are brazed respectively to the ends of strips 11<1>, 11. There are thus two parallel paths between terminals 6, 7, each in effect comprising two turns. A reinforcing steel band 9 round the outside of both coils prevents deformation with heavy currents and acts as a magnetic screen. A modification is described in which each parallel path has three effective turns, Figs. 5, 6 (not shown).
Patent GB-1521460-A (GB)
Title: Self-limiting electrically resistive article and process for its manufacture
IPC: H01C1/02
Filed: 1974-08-30
Abstract: 1521460 PTC resistors RAYCHEM CORP 28 Aug 1975 [30 Aug 1974] 38059/74 Heading H1K [Also in Division H5] A PTC self-regulating resistor 1<SP>1</SP> comprises at least two spaced-apart elongate parallel electrodes 2<SP>1</SP> electrically coupled by a web 3<SP>1</SP> of a composition including conductive particles in a polymeric matrix, the minimum thickness t of the web 3<SP>1</SP> being at least equal to the maximum dimension of the electrodes 2<SP>1</SP> in the direction of the thickness of the web 3<SP>1</SP> and the value of the ratio of the shown dimensions l and t is between 2 and 6, and preferably 3. The conductive particles may be carbon black and the polymeric material a polyolefin, and the resistor 1<SP>1</SP> may be enclosed in a thermoplastics jacket 4<SP>1</SP>. The matrix 31 is extruded on to the conductors 2<SP>1</SP> and the jacket 4<SP>1</SP> is extruded thereon.
Patent GB-1477265-A (GB)
Title: Process for producing myrcene
IPC: C07C2/40
Filed: 1975-09-16
Abstract: 1477265 Dimerisation catalysts NISSAN CHEMICAL Ltd 16 Sept 1975 [26 Sept 1974 16 July 1975] 38083/75 Heading B1E [Also in Division C5] A catalyst composition for dimerising isoprene comprises (1) a cyclic ether or N-alkylmorpholine solvent, (2) an alkali metal and (3) a primary or secondary amine having a branched chain or cyclic hydrocarbon residual group. Preferred components are (1) THF (2) Na or K (3) di-isopropylamine.
Patent GB-816198-A (GB)
Title: Improvements in or relating to commutators
IPC: B21F45/00
Filed: 1957-12-09
Abstract: 816,198. Commutators for dynamo-electric machines. BOSCH G.m.b.H., R. Dec. 9, 1957 [Dec. 19, 1956], No. 38150/57. Class 35. [Also in Group XXII] In a moulded commutator in which the moulded material 10 is reinforced by circumferential turns of wire 14 which also serve as a hub surface 13 for mounting on the spindle, the wire has axial kinks or other deformations to ensure regular spacing and penetration of the moulding material between the turns. As shown in Fig. 2, the reinforcing comprises a sinuously curved steel wire 14 encircling the bore so that adjacent turns make only occasional contact. As shown in Fig. 3, a square wire 15 is sharply bent at about 60 degrees to form a series of hexagons when coiled. Modifications are described in which a rectangular steel strip is either twisted continuously along its length or twisted sharply in alternate directions at rightangles. To secure the turns where they make contact, the wire may be coated with a hard solder containing copper, or the coil is coated electrolytically with copper and then heated in hydrogen. Alternatively, the turns may be secured by axial strips of weld or by dipping the coil in molten tin.
Patent GB-1357566-A (GB)
Title: Preheating of the oven chambers and/or trunk flues of regenerative  coke oven batteries
IPC: C10B17/00
Filed: 1971-08-17
Abstract: 1357566 Coke ovens HEINRICH KOPPERS GmbH 17 Aug 1971 [30 Oct 1970] 38445/71 Heading F4B Apparatus for preheating the trunk flues and oven chamber of a regenerative coke oven battery, comprises a box structure 5 installed at each end of each oven chamber 1, and a box 14 installed in flue 13. The box structure 5 is made up of two sections 5a, 5b built up of panels of thermally insulating material. A burner 6 is installed in the lower part of a door 4 to eject a suitable fuel into the box 5 for combustion therein and the generation of hot gaseous combustion products which escape into the oven chamber 1 through the opposite end of the box and through apertures 8 in the upper wall 7. Similarly boxes 14 in the flue 13 receive burners 15, and hot combustion gases are delivered to flue 13.
Patent GB-346461-A (GB)
Title: Improvements in hay-loaders
IPC: A01D87/06
Filed: 1929-12-16
Abstract: 346,461. Hayloaders. KNAPP, T. E., Thames Valley Iron Works, Clanfield, Oxfordshire. Dec. 16, 1929, No. 38539. [Class 6 (iii).] To minimize the risk of the crank shafts of the rake bars of the conveyer of a hayloader of the type described in Specification 199,941, [Class 6 (iii), Harvesting-appliances], being broken a countershaft 14 is arranged to be driven through one-way clutches 15, 16, and pinions 12, 13, from whichever of the two land wheels 4, 5 is rotating the more rapidly, and the drive is transmitted from sprocket wheels 17 at the ends of the countershaft through chains 24 to sprocket wheels 9 at the ends of one of the rake bar crank shafts 8a. The crank shaft is thus positively and continuously driven from each end. The sprocket wheels 17, which carry the members 16 of the one-way clutches, are splined on the shaft 14 and may be moved against the pressure of springs 18 to release the clutches by levers 28.
Patent GB-1125311-A (GB)
Title: Constructional arrangement of a machine tool designed for the profiling of wheel sets and method of performing the profiling
IPC: F16C33/10
Filed: 1965-09-09
Abstract: 1,125,311. Wheel set lathes. "RAFAMET"  FABRYKA OBRABIAREK. 9 Sept., 1965 [21 Sept., 1964], No. 38592/65. Heading B3T. A machine tool for profiling the wheels of railway vehicle wheel sets comprises first and second pairs of elevators 1A, 2 and 1, 2A respectively having rollers 4 for supporting the wheel set 15, two pairs of driving units 6, 7 with driving rollers 10 which engage with the wheels to rotate the wheel set during machining, and means 14 for profile machining the wheels which is mounted for movement parallel to the axis of the wheel set. In operation, rollers on the first pair of elevators engage the wheels to support the wheel set while a predetermined portion of the wheels is machined, and thereafter the first elevators are retracted and the second pair of elevators engage the machined portion of the wheels to permit the remaining portion of the wheel to be machined. One of the driving units is clamped, by fluid means in relation to a wheel of the set so as to maintain the wheel set in its aligned position during the whole machining operation. The driving units are movable by fluid means 8, 9 into driving engagement with the aligned wheel set prior to the commencement of the machining operation.
Patent GB-1324258-A (GB)
Title: Method for soldering the cooling body of a radiator
IPC: B23K35/26
Filed: 1970-08-12
Abstract: 1324258 Solder alloys FABRICA DE RADIATOARE SI CABLURI BRASOV 12 Aug 1970 [4 Sept 1969] 38929/70 Heading C7A [Also in Division B3] Solder alloys for use in soldering fins and pipes of a radiator have the following percentage compositions:-
Patent GB-1041317-A (GB)
Title: Electrical semiconductor mounting arrangements
IPC: H01L29/00
Filed: 1964-09-25
Abstract: 1,041,317. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Sept. 25, 1964 [Sept. 28, 1963], No. 39136/64. Heading H1K. As shown, Fig. 4, a power rectifier 7 is mounted in an eccentrically placed aperture 6 in a ceramic ring 16 to which copper cover plates 14, 15 are soldered at the areas indicated by arrows so that the resulting thermally induced stresses at the sealing points are mainly compressive. These cover plates form the terminals for the rectifier. In a second embodiment, Fig. 2 (not shown), the central bosses 16a, 16b of the ceramic ring are replaced by a separate ceramic tube 9 located in, and sealed to, apertures in the cover plates. In a further embodiment, Fig. 3 (not shown), rectifier 7 is surrounded by a ceramic tube 10 whose ends are located in recesses in the cover plates and sealed to the walls of the recesses. The remaining space between the cover plates is filled with a block 13 of insulating material but this may be omitted if a plurality of rectifiers each surrounded by a ceramic tube are mounted between the same pair of cover plates. An embodiment, Fig. 5 (not shown), is also described in which the surfaces of ceramic ring 16 surrounding aperture 6 are conically shaped and the cover plates have a complementary shape. The cover plates may also be sealed to the insulating body by means of a cement.
Patent GB-1086083-A (GB)
Title: Photographic material processing apparatus
Inventor: CAUWE ANDRE PAUL
IPC: A22C21/00
Filed: 1964-09-25
Abstract: 1,086,083. Film-processing apparatus. GEVAERT-AGFA N.V. Sept. 25, 1964, No.39266/64. Heading G2A. Film-processing apparatus comprises a tank 21 and two roller units adapted to be fitted one inside the other within the tank for the transport of film sheets therethrough, together with means for driving the rollers and for guiding film sheets through the apparatus, the outer roller unit 31 having two spaced rows of rollers rotatably supported on two frame members 33, 34 while the inner unit 32 is provided with rollers which lie between and co-operate with the rollers of the outer unit. The means for guiding sheets between the successive pairs of rollers comprises a series of plates 61 on the inner unit 32 and a further series 62, 63, 64, 65 on the unit 31. The plates 62, 63 turn the film sheets through 180, thus guiding the sheets from the first side of the inner unit to the second side thereof. One end of each roller carries a gear. The gears on the inner roller unit 32 engage a train of gears 49-56 driven by a motor (not shown). Film sheets may be passed from the developer tank 21 to a fixer tank 22 and subsequently a wash tank 23, the sheets being passed through the tanks 22, 23 by similar roller units. The sheets are directed from the last co-operating pair of rollers in one tank to the first pair in the next tank by a guide plate 69, a pair of rollers 71, 72 and a further guide plate 70. The wet film sheets are passed from the tank 23 between pairs of squeegee rollers 80 in a drying chamber 12. Driven roller pairs 81 conduct the film sheets, past hot-air tubes 82 having longitudinal slits directed towards the sheets. The temperature of the developer solution in the tank 21 is thermostatically controlled while the fixing solution in the tank 22 is kept at a temperature of 25 C. by the transport of water to the tank 23 in a conduit 87 which passes through the tank 22. The film loading section 10 of the apparatus is in a darkroom.
Patent GB-1457677-A (GB)
Title: Apparatus for treatment of solids for analysis
IPC: B02C18/06
Filed: 1974-09-11
Abstract: 1457677 Comminuting apparatus; mixing apparatus TECHNICON INSTRUMENTS CORP 11 Sept 1974 [13 Sept 1973] 39597/74 Headings B1C and B2A Comminuting and mixing apparatus comprises first and second relatively movable cutters 30, 56 relatively rotatable about an axis, each cutter including a plurality of knife edges arranged about the axis and cooperating to provide shearing action, the first cutter 56 being floatingly mounted for axial movement towards and away from the second cutter 30 and having means on it to move it towards the second cutter when it is running and to move it away from the second cutter element when operation stops. As described the rota table cutter 56 has hydrofoil surfaces 74 and thus the liquid medium in the vessel causes the cutter 56 to lift from the position shown in Fig. 3 to that of Fig. 1 where it abuts cutter 30. Feed is via an inlet 22 and a plug is removed from an opening 24 for discharge of contents, or cleaning of the mill. The cutter 30 may be formed of metal or ceramic material and the cutter 56 of ceramic material.
Patent GB-1462178-A (GB)
Title: Monoazo disperse dyestuffs
IPC: C09B29/095
Filed: 1973-08-22
Abstract: 1462178 Benzene-azo-naphthalene disperse dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 16 July 1974 [22 Aug 1973] 39772/73 Heading C4P Novel dyestuffs of the formula wherein X is Cl, Br, NO 2 , CN or acyl; R is alkenyl or -(CH 2 )nYZ or is alkyl optionally substituted by Cl, Br, CN, alkoxy, aryloxy or aryl; n is an integer from 2 to 8 ; Z is alkyl optionally substituted as for R or is optionally substituted aryl or heterocyclyl or Y and Z together are and Y is -CO-, -O.CO-, -CO.O-, -O.CO.O-, -N(T). CO.O- -N(T).CO-, -N(T).CO.N(T)- or -N(T). SO2- where T is H or alkyl, are prepared by conventional diazotization and coupling. They are used to dye or print synthetic textile materials, e.g. cellulose acetates, polyamides and polyesters, in blue shades.
Patent GB-843971-A (GB)
Title: "improvements in or relating to gun installations and mountings therefor"
IPC: F41A9/54
Filed: 1958-11-06
Abstract: 843,971. Gun installations. HAWKER AIRCRAFT Ltd. Nov. 6, 1958 [Dec. 23, 1957], No. 39937/57. Class 92 Relates to a gun installation comprising a self-contained unit adapted for mounting externally of a craft, e.g. a tank, road vehicle, marine craft, or, as described, an aircraft. According to the invention the unit is provided with means for storage and feeding ammunition comprising a shoot spirally located within the casing of the unit around the gun. As shown the unit is suspended from a pylon sole plate 1 Fig. 1 beneath the wing of an aircraft and includes a casing 2 comprising a detachable nose portion 3, a central portion containing the gun 14 and a tail portion 4 including two compartments 5, 6 for receiving respectively the links 7 of the ammunition feed belt and the empty cartridge cases 8. The unit is secured to the plate 1 by a main support beam 11 Figs 1, 2 from which a pair of gun-mounting beams 15 is supported by a universal pivotal mounting 16 and an assembly 17 which permits the beams to be adjusted in elevation and training for harmonizing the units. The body of the gun (e.g. a 30 m/m Aden gun) is slidably associated with the beams 15 and is provided with a supply of belted ammunition of the disintegrating link type. The ammunition is stored and fed into the gun through a shoot in the centre portion of the unit, the inner surface of the casing being provided with spiral ammunition guides 21 while the inner surface of the shoot takes the form of a freely rotatable drum 22 which surrounds the gun and beams 15. A fixed shoot 28, 29 Fig. 5 carries the ammunition from the spiral shoot to the gun feed mechanism. The links of the belt are ejected from the gun through a link shoot 34 of substantially spiral shape, the links falling into compartment 5. The spent cases 8 are discharged through a case shoot 37 Fig. 1 into the detachable tail portion 4 of the unit.