baber/WOPTO huggingface dataset:
Patent GB-1201652-A (GB)
Title: Polymerisable compositions
Inventor: MATTHEWS VINCENT
IPC: C08G69/28
Filed: 1967-05-25
Abstract: 1,201,652. Hydrolysing polyamides. IMPERIAL CHEMICAL INDUSTRIES Ltd. 29 April, 1968 [25 May, 1967], No. 24420/67. Heading C3R. A polymerizable composition comprising water, a polyamide of M.W. below 1000 and a diacid-diamine salt is prepared by heating at at least 150‹ C. a polyamide of M.W. above 4000 and derived from a C 2-12  diamine and a C 6-12  dicarboxylic acid with an aqueous solution of a similar diacid and neutralizing the product with a similar diamine. The original and similar acids and diamines may be the same or different and numerous examples of each are given. The product may be used as a coating solution or the process may be used to recover scrap polyamides. Before polymerizing the product it may be purified, e.g. by filtration which may be preceded by treatment with decolorizing carbon or a diatomaceous earth, or it may be distilled, e.g. with steam. Additives such as viscosity stabilizers, e.g. acetic acid, pigments, e.g. TiO 2 , light stabilizers, e.g. Mn compounds, heat stabilizers, e.g. Cu compounds, or antioxidants may be incorporated therein. Reference is made to Specification 921,667.
Patent GB-1467619-A (GB)
Title: Stemming device
IPC: F42D1/18
Filed: 1975-06-06
Abstract: 1467619 A stemming device R P CHAMPION 6 June 1975 24479/75 Heading F3A A device for stemming boreholes comprises a protective sleeve surrounding a cylindrical length of a clay compound.
Patent GB-363649-A (GB)
Title: The manufacture of workable objects from austenitic manganese steel
Filed: 1930-08-16
Abstract: Articles that are machined in the course of production are made from austenitic manganese steel consisting of 17,5-35 per cent of manganese, 0,05-1 per cent of carbon, the remainder being iron and the usual percentages of the common impurities such as silicon, sulphur, phosphorus, and aluminium.  The practice of heating steels containing 9-16 per cent of manganese and more than 1 per cent of carbon to a temperature of 400 DEG  C. to render them amenable to hot working is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) includes also articles of such steel containing 17 per cent of manganese.  This subject-matter does not appear in the Specification as accepted.
Patent GB-468021-A (GB)
Title: Free-wheel clutch for motor vehicles
IPC: B60K17/26
Filed: 1936-09-09
Abstract: 468,021. Lockable free-wheel clutches; facilitating change of speed. NEURATH, W. Sept. 9, 1936, No. 24598. Convention date, Oct. 8, 1935. [Class 80 (ii)] In a roller free-wheel tail clutch for the gear-box of a motor vehicle, the inner clutch member 4, Fig. 1, is secured to a sleeve 5 which is splined on the driving shaft 18 and which has teeth 10' adapted to engage teeth 10 in the outer driven clutch member 3 so as to lock the clutch. A sleeve 6 rotating with the sleeve 5 is permitted a limited axial play thereon. A member 7, positioned axially on the sleeve 6 but rotatable thereon, has teeth 8, Fig. 3, the stepped parts 9 of which engage constantly in teeth 10<2> of the member 3. A pivoted fork 11 engaging a groove in the sleeve 6 is urged to the right by a spring 13 and is connected by a rod 21 and spring 20 to the operating pedal 17 of the main clutch. Thus, on depression of the pedal 17, the free-wheel clutch is unlocked and over-runs so as to facilitate gear changing, and the teeth 8 move to the position shown in full lines in Fig. 3. On release of the pedal, the members 4.. 7 are thus prevented from returning to the right. When the clutch begins to drive, the teeth 8 move into the position shown in dotted lines in Fig. 3, and the members 6, 7 can move to the right to the extent of their axial play on the sleeve 5, which latter is prevented from moving due to friction, since the clutch is in driving condition. On now allowing the clutch to overrun, the sleeve 5 can move to engage the locking teeth. A free-wheel clutch may be arranged between the members 6 and 7. For reverse drive, the sleeve 5 is moved to the left by a separate lever so as to bring its teeth 10<1> into engagement with the teeth 10<2>. In the form shown in Fig. 4, the inner clutch member 4 itself carries the teeth 10<1> and is splined, with slight angular play, on the shaft 18. A member 14, connected for rotation with the member 4 but capable of axial play relative thereto limited by heads on rod 27, carries teeth 8<1> co-operating with teeth 32 on a flange 14<1> on the shaft 18. A sleeve 25 frictionally arranged on the member 14 rotates constantly with the member 3. With the clutch unlocked and in overrunning condition, the teeth 8<1> and 32 cannot engage. As the clutch begins to drive, the teeth 8<1>, 32 move into alignment and engage to the extent of the axial play provided by the rod 27. On now allowing the clutch to overrun, the member 4 moves to the left to lock the clutch. Instead of axial play being provided between the members. 4 and 14, the flange 14<1> may have limited axial play on the shaft 18.
Patent GB-734251-A (GB)
Title: Polystyrene moulding powders
IPC: C08L9/06
Filed: 1953-09-08
Abstract: Polystyrene moulding powder comprises a mixture of 99.5-95.0 parts by weight of polystyrene (M.W. Staudinger 40,000-90,000), and 0.5-5.0 parts by weight of a butadiene-styrene copolymer (containing 40-80 per cent, preferably 50 per cent, of butadiene and having a Mooney viscosity of 50-100).  Aliphatic and/or aromatic hydrocarbons and/or chlorinated derivatives thereof having a boiling point above 150 DEG C., e.g. nonane, decane, dodecane, hexadecane, eicosane, pentatriacontane and their mono and polychloro derivatives, chlorinated polyphenyls, polychlorinated benzenes, naphthalenes or alkyl benzenes or mixtures thereof may be incorporated in amounts of not more than 1 part per 100 parts of the polymer-copolymer blend as plasticizers.  The mixture is prepared in a rotary blender, by milling on heated rolls, or by mixing aqueous latices of polystyrene and styrene-butadiene copolymers, drying and blending with dry polystyrene in a proportion of at least 50 per cent of the final blend.  The blended material may be moulded directly or hot worked before moulding to give moulded articles with improved physical properties.  Dyes, pigments, lubricants and fillers may also be included.
Patent GB-972539-A (GB)
Title: Ashtrays
Inventor: BURRIDGE ANTHONY ARTHUR
IPC: A24F19/00
Filed: 1962-06-28
Abstract: 972,539. Smokers' ashtrays. WILMOT BREEDEN Ltd. June 19, 1963 [June 28, 1962], No. 24835/62. Heading A2M. An ashtray comprises a body 4 formed with a plurality of passages 5, a receptacle 8 and a plurality of cigarette extinguishing closure members 9a, 9b which are resiliently urged towards positions in which they extend across the passages at or adjacent to the side of the body 4. A wall 6 divides two rows of passages 5 and a removable rod 7, extending the length of the body, supports the closure members 9a, 9b, which may be in the form of V-shaped strip metal springs or spring biased rigid members. In the embodiment shown in Fig. 3 a lid 10 is provided which may be provided with projections adapted to engage in the recesses 5 to force butts past the closure members 9a, 9b. The wall 6 may be omitted in which case an arm of a V-shaped closure member lies against a wall of the passage 5 while the other arm extends across the passage.
Patent GB-462957-A (GB)
Title: Improvements in wire stapling devices
IPC: B25C5/02
Filed: 1936-09-11
Abstract: 462,957. Stapling. LASCH & CO., C. L. Sept. 11, 1936, Nos. 24852 and 24853. Convention dates, Sept. 11, 1935 and Aug. 24, 1936. [Class 89 (iii)] Relates to stapling devices of the kind having two clenching dogs 6 pivoted in a work table 1 which is pivoted at one end 2 and is supported at the other end by springs 4 and by a releasable catch 14. The catch 14 is connected by links 13, 19, biassed by a spring 15, to a sliding rod 10 having a bevelled end 16 projecting into the driver passage. When a staple has been driven so that its legs have penetrated the work, its cross-bar engages and displaces the rod 10, so that the catch 14 is swung clear of the table 1. The latter is then depressed by continued pressure of the driver, so that the dogs 6 are rocked by engagement with an abutment 7, clenching the staple legs. The catch 14 may be provided with a cam surface adapted, under the action of the spring 15, to restore the table 1 to horizontal position. The springs 4 then may be dispensed with. In a modification, Fig. 5, the rod 10 is displaced by a bell-crank lever 24 adapted to be rocked by an adjustable abutment 27 on the driver-actuating lever 28.
Patent GB-719902-A (GB)
Title: Improvements relating to knitting machines
IPC: D04B11/06
Filed: 1952-10-03
Abstract: 719,902. Knitting-machines. COBERT, A. J., and BEAUTIFUL BRYANS, Inc. Oct. 3, 1952, No. 24856/52. Class 74 (2). The narrowing frame 4 of a straight-bar machine is slidably mounted on vertical standards 2 for moving the narrowing points 16 towards and away from the needles 17. The frame 4 is supported by springs 3 and is positively lowered into operative position by a cam 13 acting through arms 11, 8 and a connecting rod 7. To facilitate return of the loops from the narrowing points to the needles, means are provided for tilting the frame and points. A second cam 36 is arranged when the frame is in its lowermost position, i.e. the position of transfer of the loops from the points to the needles, to raise a roller 35 and link 34 to move a set screw into contact with a plate 32 secured by a link 30 to a tilting rod 26. The set screw 33 determines the amount of tilt, and a second set screw 41 determines the position of the frame in which the loops are taken by the points.
Patent GB-272436-A (GB)
Title: Improvements in or relating to valves
IPC: F16K5/22
Filed: 1926-10-07
Abstract: 272,436. Merco Nordstrom Valve Co., (Assignees of Nordstrom, S. J.). June 12, 1926, [Convention date]. Closure Member, rotary conical; lubricating.-A tapered plug valve has longitudinal grooves 25 and transverse grooves 30, 31 in the seating surfaces of the casing and plug respectively, arranged to form when the plug is in either open or closed positions two diametrically opposed closed lubricant circuits. As shown, four grooves 25 are spaced about 90 apart, and pairs of grooves 30, 31 subtending an angle of about 90‹ to the plug axis are arranged in upper and lower parts of the plug. The upper pair of grooves 30 communicate with a lubricant chamber 38 in the plug, the lubricant being placed under pressure by a screw 39. The arrangement is such that during operation those grooves 25 exposed to the action of the fluid passing through the valve are cut off from the lubricant supply 38.
Patent GB-391018-A (GB)
Title: Improvement relating to washing machines
IPC: D06F13/00
Filed: 1932-09-09
Abstract: 391,018. Washing and wringing machines. COTTINGHAM, R. F., Enterprise Works, Digby Street, Scunthorpe, Lincolnshire. Sept. 9, 1932, No. 25104. [Class 138 (ii).] A washing-machine comprises a tub 2, stand 1, and bridge-piece 3 carrying the paddle 9, the tub being clamped between the bridgepiece and stand by bolts or straps 6. The paddle 9 is rotated by a detachable handle 11 and is also given a vertical reciprocating movement by a cam 12 as described in Specification 354,575. The bridge-piece 3 is of sheet metal provided with drainage holes, a cut-away front portion forming a ridge 14, and sockets 4 on its rear wall for detachable connection of a wringer 5. A modified bridge-piece, Fig. 4, has upstanding lugs 17 for carrying a wringer, slots 18 for the bolts 6, and depending ridges 20 for locating the bridge on the top of the tub. The machine may be dismounted and the parts packed inside the tub.
Patent GB-633194-A (GB)
Title: Improvements connected with devices for the removal of plaster casts and bandages
IPC: A61F15/02
Filed: 1947-09-15
Abstract: 633,194. Removing plaster bandages. GREVILLE, E. G. Sept. 15, 1947, No. 25196. [Class 81(ii)] [Also in Group XXIII] A device for removing plaster casts and bandages and serving also as a bone punch, comprising a cutting tool 5 of channelled section reciprocated on a guide 19 to cooperate with an anvil 20 at the foot of the guide, is provided with an ejector 35 on the tool guide in such a position that when the tool 5 slides over it as it recedes from the anvil the ejector 35 will forcibly eject any cuttings which may have been carried up inside the tool. In the examples the cutting tool 5 is reciprocated by means of a hand lever 2 pivoted at 7 in a casing 3 to which a second hand lever 1 is bolted, as in Specification 550,463. in one example, Fig. 1, the ejector is formed by a stationary projection 35 on the forward edge of a guide plate 19, and an inclined rear edge 36 of the projection co-operates with a wedge shaped part 27 to loosen and eject through an opening 25 any small chippings which may escape past the ejector 35. In an alternative form, Fig. 5, the ejector 35 may be separate from the guide plate 19 and provided with a spring 37 against which the ejector is pressed by the material being cut so that it recedes into the tool during the cutting operation, the spring 37 thrusting it out of the tool to eject the cuttings as the tool is raised.
Patent GB-172384-A (GB)
Title: Improvements in or relating to electrical rivet heating machine
IPC: H05B3/00
Filed: 1920-09-01
Abstract: 172,384. Moll, J. Sept. 1, 1920. Heating by electricity. - A rivet-heating machine is provided with two heating devices which are operated alternately so that while a rivet is being heated in one, a hot rivet may be replaced by a cold rivet in the other. The rivets are clamped between pairs of water-cooled electrodes a, b and a, c connected to the secondary winding of a transformer enclosed in a casing G. The electrode a is adjustable and is provided with recesses to fit various sizes of rivet heads. The clamping-electrodes b, c are actuated by cams f, f<1> on a shaft e operated by a hand-lever h, the cams f, f<1> having their raised parts at right-angles to each other so that the electrode b is raised when the electrode c is depressed and vice versa. The shaft e operates the switches for the primary circuit of the transformer the circuit being completed after the rivet is clamped and broken before the rivet is released. The electrodes b, c are adjustable for rivets of different lengths.
Patent GB-600256-A (GB)
Title: Improvements in or relating to electric pulse translating circuits
IPC: H03K7/00
Filed: 1944-12-15
Abstract: 600,256. Pulse modulation STANDARD TELEPHONES & CABLES. Ltd. Dec. 15, 1944, No. 25263. Convention date, Feb. 12. [Class 40 (v)] For modifying a train of pairs of pulses having a constant cadence frequency means are provided for effectively delaying one of the pulses of each pair. The pulses may be timemodulated for signalling purposes and the. invention is stated to enable a simplified form of demodulator to be used. In one embodiment, time-modulated pulses 180, 181, Fig. 2, curve a, from a source , 10, Fig. 1, are applied to a multivibrator circuit triggered by every alternate pulse 180 to produce wider pulses 190, Fig. 2, curve b, the width of which can be controlled by the variable common cathode resistor 112. These pulses together with the original pulses from line 14 are applied to a multi-grid. mixer valve 118, the output at the anode of which is of the form shown in curve c, Fig. 2. This output is clipped at the levels 195, 196 by the valves 138, 144 and the resultant differentiated by the circuit 146, 148 to produce inter alia the sharp pulses 180d, 181d, Fig. 2 curve d. A further clipping operation in valve 150 at the level 197 produces the finally modified pulse train 180d, 181d, shown in curve e. The demodulator for this train comprises multigrid valve 156 to one grid of which the pulses are applied and to another grid of which is connected a circuit 162 tuned to a harmonic of the cadence frequency of the pulses. Circuit 162 is shock excited and the wave thus generated and combined with the pulses in the anode circuit raises them to amplitude levels varying with the time displacement modulation as described in Specification 600,291. A filter 24 passes on the resultant audio frequency signal to the reproducer 26 or other utilization circuit. In a second embodiment time-modulated pulses 380, 381, Fig. 4 curve f, from the source 10, Fig. 3, are applied to a multivibrator 30 triggered by every alternate pulse 380 to produce wider square pulses 390, Fig. 4 curve g, which are differentiated by circuit 300, 302 to produce pairs of pulses 380h, curve h. These pulses are clipped at level 394 by valve 304, delayed by network 34 to produce the displaced pulses 380 h, curve i and applied to mixer 36. Pulses from source 10 are also applied to one grid of valve 312 and inverted pulses 3901, curve j, from multivibrator 30 are applied to a second grid through a D.C. restorer 315. The valve also acts as a clipper at level 395, curve k, so that its output comprises pulses 381 only, which are also passed to the mixer 36, where they are combined with the delayed pulses 380h to produce the pulse train of curve m for demodulation in circuit 22.
Patent GB-1128556-A (GB)
Title: Improvements in or relating to the manufacture of high-purity crystalline materials
IPC: C01B33/02
Filed: 1967-06-01
Abstract: 1,128,556. Silicon. SIEMENS A.G. 1 June, 1967 [2 June, 1966], No. 25331/67. Heading C1A. [Also in Division C7] A high-purity crystalline material, e.g. Si is made by a chemical transfer reaction in which applying a dynamic pressure gradient e.g. at least 20 mm./Hg. results in a source I of crystalline material situated at one part 3 of a reaction vessel 1 being converted by a reaction gas, e.g. a halogen and/or halide, to a gaseous compound, e.g. SiI 4  or compounds, and reformed and deposited on a substrate II located at another part 4 of the vessel in crystalline form by decomposition of the gaseous compound or compounds. The source and substrate are heated to substantially the same temperature, e.g. 1150-1250‹ C., in a tubular furnace 11. The material, e.g. a semi-conductor material, may be deposited in monocrystalline form. The source may be of a powdered material 5 and the substrate in the form of monocrystalline body 8 of the same material as the source ; thus both may be of the same semi-conductor material but differently doped. Alternatively, both may be of different materials; thus the source may be a semi-conductor material and the substrate a metal or an inert material, e.g. quartz or ceramic. The reaction gas may include a carrier gas, e.g. H 2 , N 2  or Ar. The pressure gradient may be produced by radical local change in the tube diameter, e.g. by means of a nozzle-like constriction 2 or by incorporation of flow resistance device, and increased by incorporation of baffle devices. The process is applicable to other systems, e.g. Ge-I, Ti-I, Zr-Cl, Zr-Br, Zr-I, V-I, Nb-Cl, Nb-Br, Ta-Cl, Ta-Br and Cu 2 O-HCl (see Division C7).
Patent GB-1478652-A (GB)
Title: Method of reducing contamination of exhaust gases
IPC: F01N13/02
Filed: 1974-06-07
Abstract: 1478652 Reducing exhaust gas pollution ROBERT BOSCH GmbH 7 June 1974 [9 June 1973] 25410/74 Heading B1W [Also in Divisions Fl and G3] A method of reducing exhaust gas contamination of an I.C. engine 11 to whose exhaust manifold 23 are connected in series a first reactor 28 for reducing nitrogen oxides and a second reactor 27 for oxidizing hydrocarbons comprises regulating the air/fuel ratio of the mixture inducted by the engine in response to the temperature of the gases reacted in the first reactor and supplying additional air to the engine exhaust system upstream of one  or both reactors at a rate dependent upon the oxygen content of the gas entering the first reactor. A temperature sensor 41 produces a voltage which is amplified by amplifiers 44, 45 to substantially close valve 22 in a by-pass 21 when the engine is cold and when the atmospheric temperature is very low to supply a rich mixture to the engine. This results in a low oxygen content in the exhaust gas leaving the engine which is detected by an oxygen measuring sensor 40 and, by way of amplifiers 42, 43 causes a valve 35 to be opened by a solenoid 39 to supply air from a pump 32 to the exhaust manifold 23 to bring the air number in the reactor 28 into the range 0.985 to 0.995. When the desired catalyst operating temperature is attained the valve 22 opens to allow leaner mixture to reach the engine. The resulting higher oxygen content of the exhaust gases is detected by the sensor 40 and the valve 35 is closed. The pump 32 also supplies air to the oxidizing catalytic reactor 27. Instead of a carburettor with by-pass 21, an electronic or mechanical injection system can be used. The amplifiers 43, 45 act as integrators whose outputs are fed to power amplifiers (46) Fig. 2 (not shown). The two reactors 27, 28 may instead be two beds of a reactor 26.
Patent GB-666743-A (GB)
Title: Improvements in or relating to float-feed carburettors for internalcombustion engines
IPC: F02M1/00
Filed: 1949-10-04
Abstract: 666,743. Spray carburetters. AHLSTEDT, C. V. Oct. 4, 1949, No. 25450/49. Class 7(iii) The air space of a fuel float chamber 1 is maintained under pressure by a connection 25<SP>1</SP> to a funnel-shaped air impact opening 24<SP>1</SP> in the intake passage 9, and a passage 13<SP>1</SP>, connected to the float chamber outlet 17<SP>1</SP> and to a passage 14<SP>1</SP> leading to the fuel nozzle 16<SP>1</SP>, is connected to atmosphere by an orifice 22<SP>1</SP>. A second nozzle 16 is fed in a similar manner with water from a float chamber 2 placed under pressure by a second impact opening 24 and pasage 25. The nozzles 16<SP>1</SP>, 16, are provided with pipes 18<SP>1</SP>, 18, leading to an idling passage 19. The fuel and water passages 14<SP>1</SP>, 14 are controlled by needle valves 21<SP>1</SP>, 21, and the passage 19 is controlled by a needle valve 31 with a small air intake orifice 32. The water is preferably preheated nearly to -its boiling point and the fuel may also be heated.
Patent GB-243138-A (GB)
Title: Improvements in or relating to tools for untying knots and for other purposes
IPC: B26B13/06
Filed: 1924-10-25
Abstract: 243,138. Hampson, J. Oct. 25, 1924. Scissors.-A tool for untying knots &c. comprises a pair of scissorslike movable jaws, having hook ends 7 with small bevelled surfaces which come together when closed to engage a knot. Scissor edges 3, notches for wire cutting or a screw driver may be formed on the jaws. The Provisional Specification states that a cigar cutter or file serrations may also be formed on the jaws.
Patent GB-898333-A (GB)
Title: Improvements in or relating to methods of forming by welding, annular projections such as branch pipes
IPC: B23K9/038
Filed: 1958-08-08
Abstract: 898,333. Casting composite articles. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 8, 1958 [Aug. 8, 1957], No. 25530/58. Class 83 (1). An annular projection or branch pipe is built up on a wall 1 by melting a welding electrode 4 inside a jig or casing 3. The jig is of copper, carbon or other material to which the welding metal will not adhere, and the slag 5 accumulates inside the built-up projection 6 and serves as an internal support. A hole 7 or holes may be provided through which excess slag may discharge during welding. After removal of the jig and slag and thermal treatment the projection may be machined and the hole or holes in the wall 1 bored out. The pipe &c. may be heated before the welding operation.