baber/WOPTO huggingface dataset:
Patent GB-682254-A (GB)
Title: A process for the production of copolymerisation products of homogeneous compositionand the products thus obtained
IPC: C08F2/00
Filed: 1949-12-14
Abstract: Homogeneous products are produced from a copolymerization reaction in which the formation of a copolymer is determined, inter alia by the molar ratio of n-unreacted monomers, which ratio is different from that in which they unite, by separating at least two monomers from the non-polymerized monomers which leave the reaction zone and passing them to a testing apparatus sensitive to the composition of such a mixture, and continuously or intermittently adding such further amounts of at least (n-1) of the more rapidly reacting monomers to the reaction zone as are necessary to maintain substantially constant the monomer ratio in accordance with the indications of the testing apparatus.  When two or more monomers are added, their rates of addition are preferably maintained in constant relationship.  The medium in which the reaction takes place, e.g. water, may also be added. The process is also applicable to solution and bulk polymerization, in the latter case as long as the mass is stirrable.  The process may be such that the mixture flows successively through a series of reaction zones in each of which monomer is added as determined by separate testing apparatus. The testing may be based on changes of thermal conductivity, extinction coefficient in infra-red rays, specific gravity, index of refraction or dielectric constant.  Change in the thermal conductivity of a gaseous monomer mixture is the preferred method which is effected by passing the gaseous mixture into a cell containing a metal wire having a high temperature coefficient of electrical resistance.  With current flowing in the wire, changes in the composition of the mixture produce changes in the rate at which heat is abstracted and consequently in the temperature and resistance of the wire.  This can be indicated on a galvanometer, preferably incorporated in a Wheatstone bridge circuit.  A reference gas is preferably used and preferably consists of the same monomers as are contained in the tested mixture.  The gaseous monomers may be separated by flash distillation and the catalyst may be destroyed beforehand.  The process is illustrated by polymerization of the emulsion described in Specification 682,253 of vinyl chloride and vinylidene chloride in which vinylidene chloride is continuously added.  The weight ratio of vinyl chloride to vinylidene chloride in the tested mixtures was maintained substantially equal, resulting in a copolymer containing 15 per cent vinyl chloride and 85 per cent vinylidene chloride.  The Wheatstone bridge may be adjusted to provide automatic control of the monomer supply line.  Specification 617,891 also is referred to.
Patent GB-1183735-A (GB)
Title: Motor Vehicle Braking Systems.
IPC: B60T13/52
Filed: 1967-07-13
Abstract: 1,183,735. Brake applying mechanism; fluid-pressure brakes. FORD MOTOR CO. Ltd. 13 July, 1967 [8 Aug., 1966], No. 32193/67. Addition to 1,157,222. Headings F2E and F2F. In an improvement or modification of the invention claimed in Specification 1,157,222 in which the linkage from the brake pedal lever 84<SP>1</SP> to the valve operating rod 66<SP>1</SP> of a servo piston (not shown) includes a first lever 78<SP>1</SP> to which is pivoted a second lever 120, the latter being pivoted at its lower end to a fixed pivot 122. Initial movement of the brake pedal lever 84<SP>1</SP> urges a resilient spring loaded push-pull link 102 to the left to rotate the lever 78<SP>1</SP> in a clockwise direction to pivot about the pin 118. At the same time the brake pedal force attempts to rotate the two levers 78<SP>1</SP> and 120 about the stationary pivot pin 122 and since a sleeve 92 is prevented from rightward movement by an insert 96 secured to the valve housing 56<SP>1</SP>, the upper end of the lever 78<SP>1</SP> and pin 90 now acts as a secondary fulcrum to permit clockwise rotation of the lever 78<SP>1</SP> to result in a leftward arcuate swing movement of the second lever 120 and the lower portion of the lever 78<SP>1</SP> as the pin 118 moves leftwardly to cause a leftward movement of the rod 66<SP>1</SP> until the clearance between the pivot pin 90 and the eyelet 98 is taken up. The travel permitted by the clearance is sufficient to cause the rod 66<SP>1</SP> to actuate the vacuum servomotor (not shown) which causes a leftward movement of the valve housing 56<SP>1</SP> so that both levers 78<SP>1</SP> and 120 are moved counterclockwise about the stationary pivot pin 122 and the brakes are applied. Should a failure occur in the power system continued depression of the brake pedal lever 84 by the vehicle operator will immediately cause a leftward force to be applied through a link 82<SP>1</SP> to the pin 118 to pivot both the levers 120 and 78<SP>1</SP> about the stationary pivot 122 to move actuating rod 66<SP>1</SP> the desired amount to mechanically actuate the brake master-cylinder piston (not shown). A third lever 126 is adapted to be actuated by a rod 136 manually by the driver which effects movement of the levers 78<SP>1</SP> and 120 about the pivot pin 122 to cause a movement of the plunger 66<SP>1</SP> sufficient to initiate movement of the servo piston.
Patent GB-950715-A (GB)
Title: New tetrahydro-quinolines and tetrahydro-isoquinolines
IPC: C07D215/58
Filed: 1962-08-22
Abstract: The invention comprises compounds of formulae: <FORM:0950715/C2/1> <FORM:0950715/C2/2> wherein R1 and R2 represent hydrogen or halogen atoms or alkyl or alkoxy groups, and their preparation by reaction of N-aminotetrahydroquinoline or -isoquinoline with compounds of formula: <FORM:0950715/C2/3> wherein X is an isocyanate group or a group converted thereto under the reaction conditions, e.g. a urea, acylated urea, urthane, thiourthane or carbamic acid halide group. The compounds of the invention are used as oral anti-diabetic substances.
Patent GB-903724-A (GB)
Title: Improved printing ink
IPC: C09D11/02
Filed: 1958-10-10
Abstract: 903,724. Planographic printing. BOILLET, E. Oct. 10, 1958 [Oct. 26, 1957 ; May 9, 1958], No. 32401/58. Class 100 (2). [Also in Group XV] A lithographic printing process, enabling a two colour image to be obtained in a single operation (without the necessity for a separate damping operation), comprises applying to a plate, having the properties of a lithographic stone, a special ink (see Group XV). This ink comprises an emulsion containing glycerin as a damping component and a colouring agent soluble therein, a binder as a vehicle for another colouring agent insoluble in the damping component, and an emulsifier, the proportions of the constituent of the ink being such that the damping component separates on contact with the lithographic plate so that the two colouring agents settle separately. The lithographic plate may be of glass, chrome, stippled zinc or aluminium which may carry an image in the form of a deposit such as a light-sensitive colloid, glass carrying metallic particles, synthetic plastic possibly coated with a thin layer of an alkaline silicate on which metallic particles are deposited, or a " bi-metal " plate.
Patent GB-980784-A (GB)
Title: Release members for switches
IPC: H01H71/50
Filed: 1962-08-23
Abstract: 980,784. Releasable fastenings. LANDIS & GYR A.G. Aug. 23, 1962 [June 18, 1962], No. 32487/62. Heading E2A. [Also in Division H2] In a pivotal release member 1 for a biased switch lever 10 having two lateral bearing arms 2, 3 and between them a contact surface 11 for the switch lever, from which surface the switch lever 10 is designed to slide off from a detent into a release position when the released member is pivoted in one sense the central portion containing the contact surface is made of laminar resilient material and forms a unified member with the two bearing arms. As shown, the surface 11 is formed by one side of a rectangle 12 which is stamped out of a lug 13 of the member 1, the lug terminating in a web 14 which bears against a rotary control disc 16 having a radial slot 15. A spring tongue 17 bears in a slot 18 in a frame 6 in which the release member is pivoted. When the disc 16 has turned far enough in one direction, the web 14 drops into slot 15 and the switch lever is released from the surface 11 to perform a switching operation and to abut a stop (not shown) and to also bear on a surface 22 of the tongue 17 whereby the web is abruptly lifted from the slot and the disc 16 freed from rotation to a position in which the slot 15 is no longer aligned with web 14. The switch lever 10 may then be pivoted back to the position shown by a spring-loaded knob (not shown). In another arrangement, Figs. 3 and 4 (not shown) the surface 11 is provided by a lug projecting into the rectangle 12. In other arrangements Figs. 5-11 (not shown), the bearing arms are formed respectively with cylindrical, cruciform and flat bearing supports. The release member may be made of spring steel or plastics material.
Patent GB-982974-A (GB)
Title: Gas flow control louvres
IPC: F16K1/16
Filed: 1963-08-16
Abstract: 982,974. Ventilators. MINISTER OF DEFENCE, STATE OF ISRAEL. Aug. 16, 1963 [Aug. 22, 1962], No. 32523/63. Heading F4V. A ventilating louvre of the type operated by the pressure of through flowing air comprises a number of parallel slats 4 pivoted about axes 7a which are displaced from the position occupied by the slats when closed, the longitudinal edges of the slats seating against angleirons 9 in the closed position. As illustrated the slats are linked by a rod 6 and are opened by an air stream 16 against gravity. Sealing strips 12 are provided on the edges of the slats and the angle irons are attached to the louvre frame 10. A stop-member 13 limits movement of the rod and thus the degree of opening of the louvre. The position of the stop 13 is automatically controlled by a motor 15 in accordance with air flow requirements. The louvre may be arranged horizontally and gravity biased towards the closed position, Fig. 2 (not shown), or arranged horizontally and gravity biased towards the open position, this being over-ridden by a spring bias towards the closed position, Fig. 3 (not shown).
Patent GB-426571-A (GB)
Title: Improvements in or relating to driving units
IPC: F16H7/00
Filed: 1933-11-21
Abstract: 426,571. Hand trucks. LAWRENCE, E. V., 32, Cyril Street, Northampton, and CANSDALE, B., 71, Ditton Court Road, Westcliff-on-Sea. Nov. 21, 1933, No. 32530. [Class 108 (i)] A portable driving unit which can be coupled operatively in turn to elements which need only be driven at different times comprises a motor mounted on a loaded truck or carriage which anchors it to the floor to transmit a steady drive. The electric motor 7 is mounted on the loaded base 2 and the frame members 1, 5 of a truck, the wheels 3 of which are so arranged that they clear the ground when the unit is placed with the base resting on the ground. The motor shaft 9 is provided with a pulley 10 whereby, say, the rotary agitators 12 of a battery of beer conditioning tanks can be driven in turn. A starter 8 is provided.
Patent GB-726649-A (GB)
Title: Improvements relating to engines, pumps, compressors or motors
IPC: F01B3/04
Filed: 1953-11-24
Abstract: 726,649. Four stroke engines; driving-gear; valve-gear. REDRUP, C. B., and REDRUP, J. A. Nov. 24, 1953, No. 32547/53. Addition to 716,802. Classes 7 (2) and 7 (6). [Also in Groups XXVI and XXVIII] The driving-gear of the parent Specification, comprising peripheral cam grooves n in a rotor m and engaged by raised peripheral collars o on freely revolvable pistons a of a series of units b (eight as described) disposed around the rotor m, lateral thrust of the collars o being received by a ring q as of hardened steel, is used with single-piston units. As applied to a four-stroke internal combustion engine, inlet and outlet valves d, e, are actuated from the rotor m via face cams h, i, and rockers f, g, and sparking plugs (not shown) are arranged in quadrature with the valves d, e.
Patent GB-848482-A (GB)
Title: Improvements in or relating to pipe spinning apparatus
IPC: B29C41/04
Filed: 1957-10-18
Abstract: 848,482. Centrifugal-moulding machines. STAVELEY IRON & CHEMICAL CO. Ltd., RILEY, R. V., and DEENING, A. G. Oct. 17, 1958 [Oct. 18, 1957], No. 32636/57. Class 87(2). Apparatus for centrifugally casting plastic or resinous pipes or linings in a tubular mould comprises spaced rollers to support the mould, means for introducing the material in flowable condition into the mould when mounted on the rollers, and means for producing a high-frequency electric field within the mould. A high frequency generator supplies alternating current to two electrodes 44 of curved cross-section arranged externally of the mould and along its length when in position on rollers 11, 12 so that the moulding material is heated but not the mould. The mould 13 is fed into position along conveyor 26 and in transit actuates a trip mechanism which automatically prepares the apparatus for the mould : pneumatic jack 31 moving loading arms 28 to the loading position and pneumatic jack 18 moving rotatable rollers 12 away from fixed rollers 11 into a mould receiving position determined by stops 19. When a trip mechanism on arms 28 is actuated, the mould is lowered onto rollers 11 and 12 and the arms retracted. Jacks 23 and 25 move upper rollers 14 and end roller 16 respectively so that they hold the mould in position. The resin feed arm 33 is provided with an injector and epoxy resin is distributed along the length of mould 13, the motor 17 switched on, and the resin pipe, which may be fibre-reinforced, moulded. Rollers 14 and 16 are retracted after moulding and the mould 13 lifted on to conveyer 27 by arms 29 actuated by jack 32 ; rollers 12 being forced towards rollers 11 to assist this operation. By a weighing or electric measuring device, stops 19 and a feed-measuring device are altered to accommodate mould of different size. The mould 13 may be porous.
Patent GB-1117090-A (GB)
Title: Process and means for packaging tobacco and the like
IPC: G01G13/00
Filed: 1965-08-03
Abstract: 1,117,090. Packaging machines. SERVICE D'EXPLOITATION INDUSTRIELLE DES TABACS ET DES ALLUMETTES. 3 Aug., 1965 [3 Aug., 1964], No. 33056/65. Heading B8C. [Also in Divisions B5 and G1] Quantities of tobacco or like material separated from a continuous flow are subjected to successive compressions in a compressing device 11, by placing a bottom panel on a plate 26 below the device 11, placing movable side panels 25 around the bottom panel temporarily to support the compressed material, pressing the material down between these side panels 25, placing an upper panel over the material and subjecting the material to a last compression through this panel, then removing the temporary panels 25 and surrounding the material with permanent side walls. In the embodiment a feed conveyer (1), Fig. 1 (not shown), deposits the material on a distributing conveyer (2) which may stock either of two hoppers (3). The conveyer (2) is automatically switched to a dribble feed towards the end of its delivery. The direction of motion of the conveyer (2) is reversed when the required weight of material has been delivered. When the base panel and movable side panels 25, Fig. 2, are in position material is delivered from conveyer 9, supplied from one of the hoppers, into the press 11 up to the level of a cell 20, which causes delivery to cease and activates the piston 12 for the first compression. Subsequent compressions are carried out in the same way, up to the point at which the hopper contains no more material. At this stage the top surface of the as yet uncompressed material is levelled by means of a pusher 21, and a lid is fed on to the top of the material from a plate 24 by means of a jack 15. The final compression is then carried out, after which the side panels 25 open and rise to release the mass. A surround (27), Fig. 4 (not shown), composed of four articulated panels is then disposed around the package, enclosing the lid (28) and base (29). A second pressing device associated with the second hopper produces another package, and the two packages may then be conveyed on roller conveyers to a stacking device comprising movable claws rotating around an elevator mast. A further lid is allowed to fall on to the plate 24, Fig. 2, from a stack supported by a system of detents, preparatory to the compression of the next load of material.
Patent GB-866879-A (GB)
Title: Improved clutch and transmission mechanism for a two-wheeled vehicle and the like
IPC: F16D47/06
Filed: 1959-09-29
Abstract: 866,879. Friction clutches. CYCLES PEUGEOT. Sept. 29, 1959 [Jan. 21, 1959], No. 33064/59. Class 80 (2). A transmission for an engine - assisted pedal cycle comprises a belt-driven pulley 1 on the engine shaft A, together with a centrifugal engine - starting clutch 14 and a powder driving clutch 17 mounted side-by-side adjacent the pulley. During normal pedal drive, pulley 1 rotates freely on shaft A, the engine being started by increasing the speed of rotation, thereby causing segments 14 pivoted to the pulley to move outwards against springs 15 into contact with a drum 6 secured to the casing 4 of the powder clutch, by which shaft A is driven. When the engine is running drive is transmitted from shaft A, through powder clutch 17 to a sleeve 18 driving pulley 1 through projections 21. The powder clutch is provided with sealing-rings 20.
Patent GB-421369-A (GB)
Title: Improvements in or relating to open fireplace blowers
IPC: F24B1/192
Filed: 1933-11-27
Abstract: 421,369. Blowers for open fireplaces. FOX, C. H., 15, High View Road, Sidcup, Kent. Nov. 27, 1933, No. 33111. [Class 126] A fireplace blower A is held in position by means of shearlegs E controlled by a spring or springs. The shearlegs are hinged at the projecting ends of a U-bracket D fitted to the blower and are controlled by the spring so that they are held either in the " down position for use, as shown in Fig. 1, or in the up " or folded position. The shearlegs may alternatively be connected to the blower by four links, as shown in Fig. 5. Specification 6616/10, [Class 126], is referred to.
Patent GB-904009-A (GB)
Title: A process and apparatus for the separation and recovery of unused starting materialsand secondary reaction products remaining after the production of ultra-pure siliconby the reduction of chlorinated silanes with hydrogen
IPC: C01B33/02
Filed: 1960-09-28
Abstract: In the production of ultra-pure silicon by reduction of chlorinated silanes, e.g. SiHCl3 or SiCl4, the residual gaseous mixture of hydrogen, silanes, chlorinated silanes and hydrogen chloride is cooled to a temperature higher than the liquefying temperature of hydrogen chloride (-85 DEG C.) to liquefy most of the silanes and chlorinated silanes, and passed through at least one more cooling trap charged with an adsorbent for adsorbing the remaining silanes and chlorinated silanes.  The hydrogen and hydrogen chloride mixture may then be washed with water, which may be very pure, to dissolve out the hydrogen chloride.  The gases entering helical tube 3 at 2, where they are pre-cooled by gases passing through tube 8 from cooling trap 1, pass into <PICT:0904009/III/1> tube 4, containing metal strips 4a to produce eddying in the gas stream, and are cooled by a solid carbon dioxide-methyl alcohol mixture 6.  Silanes and chlorinated silanes are collected at 7 and the remaining gases pass out through tube 8 to further cooling traps 10, 11, charged with an adsorbent, e.g. silica gel. Alternative traps 16, 17 are provided so that traps 10, 11 may be regenerated by passage of hydrogen and the process carried out continuously.  The hydrogen chloride is washed out in vessel 25 by water supplied through reservoir 23.  The hydrogen is dried in a drying tower 26 filled with glass beads, and compressed in compressor 27.  Remaining water is condensed in condenser 28 cooled by ice water, oxygen is removed by passing the hydrogen over a heated platinum or palladium catalyst, and final drying of the hydrogen is effected in trap 30 charged with liquid air or solid carbon dioxide.  Silanes and chlorinated silanes may be removed from the first cooling trap by a siphon 35 to a vessel 36, protected from the atmosphere by a barrier device 40 which contains mercury or an oil, and a safety vessel, 42 to prevent this liquid entering vessel 36.
Patent GB-957419-A (GB)
Title: Benzene monoazo dyestuffs
IPC: C09B29/08
Filed: 1960-05-16
Abstract: The invention comprises azo dyes of formula R-N=N-Ar-N(X1)X2 where R is a cyanobenzene radicle which may contain alkyl trifluoromethyl, nitro, halogen or further cyano substituents, Ar is a phenylene residue in which -N(X1)X2 is in the para-position to the azo group, X1 is a C1-C5 alkylene group which has a carboxyl group esterified with a C1-C5 unsubstituted alkanol, X2 is -CnH2n+1 and n is 0 to 5 and Ar is free from COOH or SO3H groups.  The dyes are made by conventional diazotization and coupling methods from appropriate cyanoanilines coupling being preferred in aqueous acid media. Listed diazo components are 2,4-, 2,5- and 3,4-dicyano-, 3 - chloro - 4 - cyano-, 2 - cyano - 5 - chloro-, 3-and 4-cyano-, 2-cyano-4-nitro-, 2-nitro-4-cyano-, 2,4-dicyano-3,6-dimethyl- and 2-trifluoro-4-cyanoanilines and 2,4-dicyanotoluidine.  Specified coupling components are N-phenyl-b -aminopropionic acid methyl ester, N-phenyl-N-methyl-b -aminopropionic acid methyl ester and N-phenylaminoacetic acid methyl ester.  The dyes colour polyamide and polyethylene terephthalate fibres.  Examples are provided of the preparation of the dyes and their use in dyeing the above fibres in red, bordeaux and orange shades.
Patent GB-776861-A (GB)
Title: Improvements relating to methods of and means for measuring current density
Inventor: MONEYPENNY HAROLD KENNETH
IPC: G01R19/08
Filed: 1953-12-03
Abstract: 776,861. Electric measurements. G.K.N. GROUP SERVICES, Ltd. Dec. 3, 1954 [Dec. 3, 1953], No. 33557/53. Class 37. [Also in Group XXXIX] Apparatus for measuring the current density in a conductive liquid, e.g. the electrolyte of a plating process, comprises two similar toroidal coils 14, 15 (Fig. 1), wound on coaxial, highpermeability cores 10, 11, and jointly coupled by a short-circuiting winding 19 and a D.C.- fed winding 20, whereby the change in impedance in the windings 14, 15 connected in series opposition when immersed in the conducting liquid due to the polarizing effect of the liquid current 13 through the middle 12 of the cores 10, 11 is balanced out by a measured current through the winding 20, which is a measure of the liquid current 13. The impedance of windings 14, 15 is measured in a bridge circuit (Fig. 3) by comparison with similar coils 14a, 15a on similar cores 10a, 11a, initial balance being effected outside the conducting liquid by adjustment of potentiometer R5, subsequent rebalance in the liquid being obtained by adjustment of potentiometers R6, R7 controlling the D.C. through coil 20. The assembly of cores 10, 11 and windings 14, 15, 19, 20 is enclosed in a non-magnetic, non- conducting sheath, e.g. polythene, and the apparatus may be used with any conducting fluid.