baber/WOPTO huggingface dataset:
Patent GB-1517600-A (GB)
Title: Hair treatment apparatus heating control
IPC: B23K3/03
Filed: 1976-12-14
Abstract: The hair-curler comprises a handle (2) and a curling rod (which is not shown in the figure) in which a heating element and a sensor are provided. The sensor comprises a sensor tube (12) in which a rod (13) is accommodated. A switch (19) switches the current of the electrical heating element on or off. In order to set the in each case desired final temperature of the hair-curler from the outside, the sensor tube (12) is provided with a relatively large coefficient of thermal expansion and the rod (13) is provided with a relatively small coefficient of thermal expansion, the sensor tube (12) being in engagement at at least one point with the rod (13) and being firmly clamped at another point in such a manner that the rod (13) is moved within the sensor tube (12) by the sensor tube (12) being expanded or retracted on changes in temperature and transmits said movements via a presettable mechanism (8, 24, 22, 25, 17) by means of the switch (19), said mechanism (8, 24, 22, 25, 17) having an adjusting device (8) which partly projects into the handle (2) of the hair-curler and partly projects therefrom.   <IMAGE>
Patent GB-1307689-A (GB)
Title: Sealant compositions
IPC: C09K3/10
Filed: 1970-11-03
Abstract: 1307689 Metal cans CONTINENTAL CAN CO Inc 3 Nov 1970 [17 Nov 1969] 52154/70 Heading B8D [Also in Division C3] The end seams of metal cans may be sealed with a thixotropic composition comprising (A) a solids mixture of (i) 10-20 wt. per cent of a rubber, (ii) 35-50 wt. per cent of a solid inorganic surface-active filler which has been contacted with sufficient water to cause hydration thereof, and (iii) 30-55 wt. per cent of a tackifying resin, and (B) an inert non-polar water-immiscible organic solvent. An exemplified composition is of stereospecific SBR, an amine-oleic acid surface-modified aluminium silicate clay + water + acetone for hydration purposes, a pentaerythritol ester of a rosin acid (tackifying resin), hexane, TiO 2 , channel black and d-#-naphthyl-p-phenylene diamine.
Patent GB-1358659-A (GB)
Title: Bicyclic nitriles
IPC: C07C255/45
Filed: 1972-11-13
Abstract: 1358659 Perfume and odorant compositions DRAGOCO SPEZIALFABRIK KONZ RIECH-UND AROMASTOFFE GERBERDING & CO GmbH 13 Nov 1972 [6 March 1972] 52365/72 Heading A5B [Also in Division C2] The perfume or odorant composition comprises a mixture of isomers of bicyclic nitriles of the formula: in which the dotted line represents a double bond present in any one of the three positions indicated together with conventionaI ingredients.
Patent GB-1057579-A (GB)
Title: Melt spinning process
Inventor: BARNETT THOMAS ROSSLYN
IPC: D01D5/23
Filed: 1964-12-24
Abstract: 1,057,579. Polyester and polyolefin filaments. IMPERIAL CHEMICAL INDUSTRIES Ltd. Dec. 13, 1965 [Dec. 24, 1964; May 19, 1965], Nos. 52465/64 and 21219/65. Heading B5B. A process for the production of filamentary materials comprises extruding a linear, fibreforming polyester or a stereo regular poly-α- olefin in the molten state through a spinneret having one orifice or a plurality of orifices, the orifice or each orifice having a cross-sectional area within the range of 0.2-12 sq. mm., and attenuating each resultant stream of polymer by the application of a force or forces acting along the length of the stream of polymer in a direction away from the spinneret face, such forces being operative at least in the region of the stream of polymer situated between the exit of the spinneret orifice and the point in the polymer stream where reduction is cross-sectional area ceases due to solidification of the polymer, the flow rate of polymer through each orifice being between 0-1 g. and 4 g. per minute, the linear speed of the fibre at the point in the polymer stream where reduction in cross-sectional area ceases due to solidification of the polymer being between 610 and 2,740 metres per minute and there being directed across each stream of polymer a stream of quenching fluid of mean velocity at the polymer stream of between 45 and 180 metres per minute. Both circular and non-circular cross-section spinneret orifices may be used and the spinneret holes may be grouped in such a manner that the streams of molten polymer from a group unite immediately after leaving the spinneret orifices to form a single stream of polymer in which case the group is treated as a single orifice of which the effective crosssectional area is the sum of the cross-sectional areas of all the orifices in the spinneret holes in the group. In an example, Y-shaped spinneret orifices are used. The quenching fluid may be air, nitrogen or a vapour, suitably steam, and may have liquid droplets present therein. Heat treatment of the spun filaments may be carried out by contact with hot water, with a hot gas or with a hot surface. The tension in the spun filaments may be relaxed to produce crimped filaments. The spun filaments may be heat treated during or after relaxation. The spun filaments may be drawn at or above room temperature prior to development of the crimp by relaxation of the tension. Alternatively the self-crimping yarn may be held under tension while being cut into staple fibre whereupon on relaxation formation of crimp occurs. The cut fibre may then be heat treated to stabilize the crimp. Alternatively, development of crimp may be deferred until a fabric has been made from the self-crimping yarn by deferring any heat treatment and/or maintaining a tension in the yarn until after the fabric is constructed, the degree of crimping achieved in the fabric being dependent upon fabric construction. Specified polyesters include polyethylene terephthalate and specified poly-α- olefins include isotactic polypropylene. Examples are given,
Patent GB-1415848-A (GB)
Title: Method and system for cleaning vhicular exhaust gases
IPC: F01N13/02
Filed: 1972-11-17
Abstract: 1415848 Gas separation NISSAN MOTOR CO Ltd 17 Nov 1972 [29 Dec 1971] 53257/72 Heading C1A [Also in Division B1] In a process for removal of NO x , CO and hydrocarbons from an I.C. engine exhaust gas by catalytic reduction followed by catalytic oxidation, hydrocarbons are added to the gas stream as reducing agent, and air is subsequently added as oxidizing agent. The hydrocarbons may be gasoline or petroleum gas. Hexane is also specified.
Patent GB-1269246-A (GB)
Title: Improvements in or relating to television cameras
Inventor: LOOSE PETER WILLIAM
IPC: H04N5/18
Filed: 1969-11-01
Abstract: 1,269,246. Television. MARCONI CO. Ltd. 28 July, 1970 [1 Nov., 1969], No. 53661/69. Heading H4F. The video signal output of a television camera is clamped during one or more of the line trace periods which occur during the field suppression period. This arrangement provides a stable reference level which is not affected by spurious signals occurring in the video signal during line fly-back due to the high peak voltages produced in the line deflection coils. As shown in Fig. 1 (the various waveforms occurring in which are shown in Fig. 2) the video signal output of the camera which includes spurious signals occurring during the line flyback periods LF, waveform (a), the camera being assumed to be " viewing " a full black subject, is fed to an amplifier 1 the output of which is preliminarily clamped (to earth reference) by means of a transistor 2 switched by pulses (c) occurring within the line fly-back period LF and derived from the line deflection circuits 3. The waveform thus clamped is stabilized against LF variation such as mains hum &c. but not against the spurious signals and is then supplied via a high input-low output impedance matching amplifier 4 to a forward biased diode 5 which is cut-off during line flyback periods LF by a negative reference potential RP when a transistor 6 is switched " on " by pulse waveform (d). This produces the wave form (g) in which the bottoms of the negatively going pulses are fixed at the reference level RP but, due to the spurious signals, the black level, the tops of the pulses (in this case the whole of the line scan interval b) may vary. Waveform (g) is then supplied via a high input-low output impedance amplifier 7 to a diode clamp 8 which is switched during one or more of the line trace periods L which occur during the field suppression period by means of switching waveforms (e), (f) derived from a source 9 controlled by the line frequency circuitry 3 and the field frequency circuitry 10. The waveform thus clamped is then clipped in a differential amplifier 11 supplied with a reference potential RP2 to provide a stabilized black level, waveform (j), to which subsequent clamps are referenced. Instead of using the diode 5 and transistor 6 to produce the negative pulses of waveform (g) suitable pulses could be derived from source 3 and superimposed on the output of amplifier 4 by means, e.g. of a resistance network. This, however, does not eliminate the spurious signals and low frequency components which are transferred to the bottoms of the pulses as shown in waveform (h).
Patent GB-1327274-A (GB)
Title: Vehicle headlight adjustment mechanisms
IPC: B60Q1/115
Filed: 1970-11-12
Abstract: 1327274 Mounting vehicle lamps ROBERT BOSCH GmbH 12 Nov 1970 [15 Nov 1969] 53809/70 Heading F4R In a control system for automatically adjusting the inclination of the light beam of a vehicle headlamp electrically in accordance with variations in attitude of the vehicle wherein a two-arm lever 16, 18, 20, pivoted on the vehicle chassis has an arm acting as a control lever 16 of a variable electrical resistance 31 and the other arm 18, 20, sensing the vehicle attitude according to the distance between the chassis 11 and the wheel axle 10, the arm 18, 20, sensing the vehicle attitude is a complex arm comprising a spring loaded intermediate safety element 15 preventing the transmission of excessive force by the arm. This spring loaded element may be pre-stressed. One part 18 of the arm 18, 20, directly controls the control lever 16 of the variable resistance and is firmly attached to the base of the housing 19 of the spring loaded element 15. A second part 20 of the arm 18, 20, is rigidly connected at one end with a piston 22 inside housing 19 separated from the housing base by a helical spring 27 within the housing 19. If excessive force is applied to the lever arm 18, 20 to cause the control lever 16 to be in danger of buckling against its end stops, the lever arm 18, 20 buckles instead at the safety element 15, the spring restoring the lever arm to its former condition on removal of the force. In a second embodiment, both parts of the arm 18, 20 are connected to pistons within the housing 19, these pistons being separated by spring 27, Fig. 3, not shown.
Patent GB-1376293-A (GB)
Title: Methods of forming seams between edge portions of workpieces of thermoformable material
IPC: B29C63/00
Filed: 1970-11-13
Abstract: 1376293 Seaming non-metallic sheet material BRITISH UNITED SHOE MACHINERY CO Ltd 12 Nov 1971 [13 Nov 1970] 54085/70 Heading B5K Edge portions of workpieces of a thermo - formable material are seamed by high frequency dielectric welding using a welding die member which comprises two workpiece supporting surfaces 12, 14 meeting at a shoulder 16. In one embodiment, Fig. 1, the die comprises a silicone rubber block 10 and the surface 12 is flat whereas the surface 14 is part-cylindrical having a raised central ridge 14a. The surfaces 12, 14 are smooth and glossy. Beneath the shoulder 16, an aluminium or brass electrode 18 is embedded in the block 10. A row of imitation stitches 20 is formed in the surface 14 adjacent the shoulder 16. A bar (not shown), extends across the block 10 in a direction normal to the shoulder 16. In use, two workpiece edge portions (not shown), e.g. shoe upper components, of a poromeric material or polyvinyl chloride coated fabric, are placed in overlapping relation on the surfaces 12, 14 with the lower portion on the surface 14 abutting the shoulder 16. Side edges of the portions abut the bar. To ensure correct overlapping of the edge portions a clamp/jig arrangement (not shown) may be provided. The die forms the lower platen of high frequency welding press. An upper platen having a silicone rubber pad 22 thereon is lowered and welding is effected to form an imitation stitched lap seam. If the shoe upper components are made of a non- woven fibrous layer having a thermoformable layer thereon, the upper edge portion is positioned on the block 10 spaced slightly away from the shoulder 16 so that upon application of heat and pressure the thermoformable layer flows into the gap to conceal the rough fibrous edge. In a second embodiment, Fig. 2, a silicone rubber block 10<SP>1</SP> shaped as shown is mounted on the lower platen of a high frequency welding press. A presser 24 is mounted on the upper platen and comprises an electrode 18<SP>1</SP> between two members 26 of plastics material having a low dielectric loss and high heat resistance, e.g. polypropylene or an acetal resin. A silicone rubber facing pad 22<SP>1</SP> is provided. In another embodiment (not shown), the die of either Fig. 1, or Fig. 2, has a mock reptile pattern applied to its surfaces and the edges of the die, other than those meeting at the shoulder, are formed to follow the "scales" of the pattern.
Patent GB-541934-A (GB)
Abstract: 541,934. ' Ornamenting. KANSAS CITY TESTING LABORATORY. June 11, 1940, No. 10150. Convention date, June 19, 1939. Drawings to Specification. [Class 93] [Also in Group XXXVI] Decorative effects are formed upon articles by electro-deposition of cuprous oxide which is electrolytically reduced to produce contraction and a pattern of small fissures. The pattern may be varied by variation of the voltage of reduction, high, medium, sub-medium, and low voltages being specified for various temperatures, by preparation of the base metal as by buffing or scratch-brush finishing, by treatment of the coating prior to reduction e.g. rubbing with cloth, by partial reductions followed by solvent or reagent treatment e.g. using a cyanide solution, or by superposing alternating current upon direct current for the oxide reduction. The reduced coating may be electro-deposited with chromium, nickel and chromium, nickel, copper, gold, "blacknickel", molybdenum oxide, silver, tin, or zinc. The cuprous oxide may be deposited from a bath including copper and sodium lactates, sodium carbonate and hydroxide, and aldol e.g. heated to 110‹F. 0.4 volts being applied for 3 minutes to give a coating 0.00003 inch thick, reduction being at 70‹F. e.g. using a dilute solution of sodium carbonate at 5-8 volts. In an example cuprous oxide was deposited, reduced, and depolarized, a second layer of cuprous oxide reduced depolarized and plated with copper, nickel and chromium. Patterns may be treated with sulphuric acid, coated with clear lacquer, and cuprous oxide coatings showing interference colours may be applied.
Patent GB-1526937-A (GB)
Title: Iii-v semiconductor photocathodes
IPC: H01J9/12
Filed: 1974-12-17
Abstract: 1526937 Photocathodes STANDARD TELEPHONES & CABLES Ltd 9 Dec 1975 [17 Dec 1974] 54385/74 Heading H1D In a method of making a transmission type, III-V semi-conductor photocathode, the semiconductor body containing a layer which is to form the active layer of the photocathode is placed on a surface of a billet of expansion matched glass on which it is to be mounted, and pressure is applied between the body and the billet while the assembly is heated by an induction heater which preferentially heats the semi-conductor body to a temperature above the softening point of the glass while leaving the bulk of the billet at a temperature beneath the softening point, the temperature of the assembly being reduced once the supporting surface of the billet has softened and the glass has yielded a preset amount and the assembly then being annealed. The surface of the semi-conductor body in contact with the billet may be the active layer which may be covered with a recombination inhibiting larger band gap layer and/or a glassy passivation layer. As shown, initially the semi-conductor body comprises a P-type GaAs substrate 2 on which is grown a thin N-type GaAs blocking layer 1, a 6 Ám. thick P-type GaAs layer 3 which forms the active layer of the photocathode and a 10 Ám. thick GaAlAs layer 4 which reduces recombination at the surface. The body also has a surface coating 6. The glass billet 7, suitably formed of a dense barium crown glass for example, is outgassed and annealed if the subsequent induction heating takes place under vacuum, however it need not be so treated if the induction heating takes place in argon. The photocathode and billet are mounted in a susceptor jig, Fig. 3 (not shown), and disposed in a bonding apparatus, Fig. 2 (not shown), which is provided with a ram (34) for applying, typically, a pressure of 1 kg. to the assembly. The induction heating of the semi-conductor body and local softening of the surface of the glass billet is continued until the glass has yielded a set amount, e.g. 50 Ám. After the assembly has been annealed the optical input face of the glass billet is polished and provided with an antireflection magnesium fluoride coating, which also protects the surface during the removal by electrochemical etching (details of which are given) of the substrate and blocking layers 1 and 2. Subsequently the photocathode is subjected to a conventional caesiating activating treatment.
Patent GB-1422957-A (GB)
Title: Polymers
IPC: C09D179/08
Filed: 1972-12-16
Abstract: 1422957 Polyimides GENERAL ELECTRIC CO 16 Dec 1972 [16 Dec 1971] 54485/72 Heading C3R A polymer is the reaction product of (1) an amine-terminated oligomer obtained by condensing (a) a tricarboxylic reactant or a mixture thereof with a dicarboxylic reactant with (b) a stoichiometric excess of at least diprimary amine, and (2) an aliphatically unsaturated bisimide where D is an aliphatically unsaturated unsubstituted or halogen-substituted hydrocarbon radical and R<SP>111</SP> contains at least 2 C atoms. The polymers may be cured by heat with or without catalysts. Reaction may be effected in solution in equivalent proportions or with excess of (2). Various reactants and solvents are mentioned. In specific examples oligomers (1) are prepared (i) from trimellitic anhydride mono acid chloride and 4,4<SP>1</SP>-diaminodiphenyl methane (DDM) in dimethylacetamide using triethylamine to remove HCl, and (ii) from trimellitic anhydride and DDM in N-methylpyrrolidone/xylene using triethyl phosphite as catalyst by the procedure of Specification No. 1,267,106 and (iii) trimellitic anhydride, azelaic acid and DDM in resol/phenol/xylene; in all Examples (2) is the bis-maleimide of DDM. Uses.-The polymers are useful as insulating films, wire enamels, mouldings and adhesives and for preparing laminates and composite material. Reference is made to Specifications Nos. 1,190,718 and 1,350,239.
Patent GB-1503510-A (GB)
Title: Aircraft fuel storage means
IPC: B64D37/04
Filed: 1974-12-19
Abstract: 1503510 Aircraft fuel tanks BRITISH AIRCRAFT CORP Ltd 16 Dec 1975 [19 Dec 1974] 55073/74 Heading B7W An aircraft is provided with an auxiliary fuel tank having flexible walls secured to aircraft structure whereby the process of filling and emptying the tank causes it to expand and contract respectively. An aircraft surface member 5 carries a pivot 17 and linkage 18 for securing opposed ends of a deformable panel 6 which embraces, with the member 5, a collapsible fuel cell 4. This comprises a rectangular base panel 7, a rectangular outer panel 8 joined by side membranes 9 and 10, and end membranes 11 and 12, of plastics reinforced woven material. Means to prevent membranes 9 and 10 from displacing outwards when the tank is filled and to cause them to fold inwards as the tank is emptied comprises a series of V- shaped members 21 having arms 22 hinged to panel 8 with apices 23 connected to transverse tie cables 47 and longitudinal cables 24 and 25. The cable 24 is connected to a tensioning device shown diagrammatically in block XI in Fig. 10 and actuated by a cable 37 connected to the movable end 16 of panel 6, and cable 25 is connected to a cable tensioning mechanism 40-45. A further embodiment is described (Figs. 12-14, not shown) in which a collapsible tank having a similar wall construction is housed in the wing/fuselage junction.
Patent GB-1390540-A (GB)
Title: Process for the production of a material containing a photo graphic silver salt emulsion with increased sensitivity
IPC: G03C1/10
Filed: 1972-12-01
Abstract: 1390540 Phosphoric acid (N-phenylsulphonamide)-derivatives AGFA-GEVAERT AG 1 Dec 1972 [4 Dec 1971] 55483/72 Heading C2P [Also in Division G2] A compound of the general formula where R<SP>1</SP> is phenyl, R<SP>2</SP> is hydrogen and X<SP>1</SP> and X<SP>2</SP> are both chlorine is prepared by stirring phosphoric acid phenylsulphonylimino trichloride with anhydrous formic acid and benzene. A similar compound in which X<SP>1</SP> and X<SP>2</SP> are both OH groups is made by heating the above compound with anhydrous formic acid and benzene or dioxane for 12 hours.
Patent GB-1213259-A (GB)
Title: Improvements in or relating to multiple hydrocyclones
Inventor: DAHLBERG BENGT INGMAR
IPC: B04C7/00
Filed: 1969-11-13
Abstract: 1,213,259. Hydrocyclones. ALFA-LAVAL A.B. 13 Nov., 1969 [15 Nov., 1968], No. 55656/69. Heading B2P. A multiple hydrocyclone system comprises a centrifugal pump having a number of rotors 18, Fig. 2, arranged axially along a rotatable shaft 17, and a number of hydrocyclones 19, each having an outlet 24 at its narrow end and an inlet 20 at its broad end, arranged in discs 21 which are situated between the rotors, the hydro-cyclones of each ring lying radially with respect to the axis of rotation of the pump with their narrow outlet ends directed towards 'the axis of rotation of the pump, and the inlets 20 of the cyclones in one disc being connected to the high pressure side of one of said rotors and their outlets 24 opening at the suction side of another of said rotors. The hydro-cyclones are inserted in holes at the periphery of the discs 21, the holes being closed by plugs 22 in which hydrocyclone outlets are provided. Discs 25 are disposed between the discs 21. Radial vanes 26, 27 are arranged in recesses in the discs 21, 25 and define channels leading to the suction side of the rotors 18. The hydrocyclone outlets 24 open into the channels formed by the vanes 26. Channels 28, leading from the outlets 28, open into the channels denned by the vanes 27. Vanes 29 of the rotors 18 terminate at 30 to provide a vaneless region 31 before the inlet 20 of each hydrocyclone. Labyrinth seals 32 are provided between the rotors 18 and the inner edges of the discs 21. The pump shaft 17 is driven by an electric motor 33, Fig. 3. The discs 21 are held together between end walls 36, 37 by bolts 34, 35 and the assembly is supported by a frame 38. In operation, a starch suspension to be separated and washed in a counter current is fed into the pump rotor 18 farthest to the right and pumped via the space 31 into the adjacent hydrocyclone 19. The separated water is discharged through the outlet 23 and channel 28 while the starch concentrate leaves the outlet 24 and is fed by the next pump rotor 18 to the next hydrocyclone 19 and so on until the clear concentrate leaves the hydrocyclone farthest to the left. Pure washing water is led through 'the channel 28 farthest to the left and dilutes the starch concentrate which leaves the outlet 24 of the hydrocyclone 19 situated farthest but one to the left. This water is then separated off in the hydrocyclone situated farthest to the left and passes via the corresponding channel 28 and pump rotor 18 to the inlet of the next hydrocyclone on the right and so on until it is fed into the hydrocyclone farthest to the right.