baber/WOPTO huggingface dataset:
Patent GB-564595-A (GB)
Title: Improvements relating to heat interchange apparatus
IPC: F28F1/12
Filed: 1943-03-18
Abstract: 564,595. Heat exchangers. SERCK RADIATORS, Ltd., and GARNER, E. March 18, 1943, Nos. 4428 and 14208. [Class 64 (iii)] A heat exchanger comprises a plurality of curved tubes a arranged parallel with each other and jointed at their ends to header or tank plates b, b, a pair of curved side plates d, d arranged parallel with and at the outer sides of the tube assembly, and one or more perforated transverse tie plates c. The, or each, tie plate c is threaded on the tubes a so as to be located intermediate the header plates band is secured at its ends to the side plates d, preferably by a tongue-and-slot engagement e. Laminar elements providing rectangular air passages g are mounted between the tubes. These elements may be made from thin metal .strips f, Fig. 3, having flanged edges h formed with recesses corresponding in shape to the adjacent surfaces of the tubes, or from thin metal strips folded in a zig-zag manner. In the latter case some of the ridges of the strips are shaped to provide protuberances j, Fig. 6, adapted to enter spaces between the tubes ; dummy spacing tubes may also be located in alignment with the tubes a and between the ridges of adjacent strips.
Patent GB-703984-A (GB)
Title: Improvements in or relating to continuous rod cigarette making machines
IPC: A24C5/52
Filed: 1950-02-21
Abstract: 703,984. Cigarette-making machines. MOLINS, D. W., and MOLINS MACHINE CO., Ltd. Feb. 21, 1951 [Feb. 21, 1950], No. 4459/50. Class 130 Continuous or discrete tobacco filler passes from one conveyer 6, Fig. 1, to another 20, which may be a cigarette paper web, over a badge 23 which is partly or wholly of openwork constriction whereby shorts at the bottom of the filler may fall through. The bridge 23 may be a single narrow strip or wire acting in conjunction with side guides, or, as shown, installed in the continuous rod cigarette-making machine described in Specification 703,982, a plurality of narrow parallel rails 27, Fig. 4, forming the top of a suction box 24 from which the shorts are returned by the action of a fan 25 to the filler, either on to the mass of the tobacco in the supply hopper 1, on to a combing, discharge or other carded roller therein, or directly on to the filler in the outlet trough 2, as near the exit end thereof.
Patent GB-197064-A (GB)
Title: Improvements in and relating to superheating arrangements in water tube boilers
IPC: F22G7/14
Filed: 1922-02-15
Abstract: 197,064. Robertson, T. E., (Power Specialty Co.). Feb. 15, 1922. Straight-tube superheaters.-In a water-tube boiler having a superheater located below the water-tubes in proximity to the combustion chamber, the flue gases are first tempered by passage over a primary bank of water-tubes and a portion of these tempered gases is than diverted to sweep the superheater before resuming its normal path over the remaining water tubes. As applied to a boiler of the Stirling type, the superheater 8, Fig. 1, is arranged in a compartment behind the bridge wall 9, away from the direct radiant heat of the combustion chamber, the flue gases from which are first tempered by contact with the front row 6 of a primary bank of water tubes 1. The gases may be further tempered by placing the baffle 11 behind the second row of the primary bank 1 of water-tubes. The tempered gases are caused by the baffles 10, 11 to sweep downwards and a pre-determined portion is then diverted by the projecting baffle 12 to sweep the superheater 8, after which it resumes its normal path. The front row of water-tubes 6 is bent as shown to provide a further tempering shield 7 to the superheater where these tubes pass from the horizontal manifold 13 to the lower drum 4. The superheater is divided into two groups over which that portion of the flue gases diverted' by the dividing baffle 12, successively passes in opposite directions. The superheater elements are arranged in two rows with the elements in the upper row situated between those of the lower row to facilitate the circulation of the flue gases around the superheater. The steam inlet pipe to the superheater from the boiler is connected to the middle of the upper header and the steam outlet pipe from the superheater is taken out from the end of the lower header. The superheater supports are independent of the boiler. A supetheater may be arranged as described behind the firebridge of a boiler of the Babcock and Wilcox type.
Patent GB-946166-A (GB)
Title: Load equalization in two way gears
IPC: F16H1/22
Filed: 1962-02-06
Abstract: 946,166. Toothed gearing. ALLMANNA SVENSKA ELECKTRISKA A.B. Feb. 6, 1962 [Feb. 7, 1961], No. 4490/62. Heading F2Q. Herringbone gear 3 on a driving shaft 2 meshes herringbone gears 5<SP>1</SP>, 6<SP>1</SP> on countershafts 7, 8 which carry helical gears 9, 10 meshing a helical gear 11 on a driven shaft 12. Straight-toothed couplings 5<SP>3</SP>, 6<SP>3</SP> are provided between the hub portions 5<SP>4</SP>, 6<SP>4</SP> and toothed portions 5<SP>2</SP>, 6<SP>2</SP> of gears 5<SP>1</SP>, 61. Shaft 8 is adapted to be moved axially in order to equalize the power transmitted through the two gear trains. At one end, the shaft 8 is mounted in an axially displaceable bushing 15 which may be locked axially between distance pieces 17 and a cover 18.
Patent GB-1324829-A (GB)
Title: Machine tool
IPC: B23Q23/00
Filed: 1971-04-19
Abstract: 1324829 Tool changers DEVLIEG MACHINE CO 19 April 1971 [22 April 1970] 4531/71 Divided out of 1324828 Heading B3B The Specification is similar to the parent Specification but the claims are directed to a machine tool that includes a rotary tool spindle for receiving a tool 40 that is carried to the spindle from a tool store 62 in a carrier 60 that includes tool length coding means 118; a reader for reading the coding means being provided adjacent the spindle; and means responsive to said reader for controlling the axial positioning of said apindle. The coding means on the carrier 60 is provided by manually settable rotary cams 120 on a shaft 122 and the reader (276) (Figs. 10 and 13, not shown) comprises a bank of micro-switches.
Patent GB-523879-A (GB)
Title: Improvements relating to abrasive wheels for surface, former and other grinding
IPC: B24D5/10
Filed: 1939-02-13
Abstract: 523,879. Grinding-wheels. FLETCHER, J. H., MITCHELL'S EMERY WHEEL CO., Ltd., ANDERSON. D. M., and GEAR GRINDING CO., Ltd. Feb. 13, 1939, No. 4599. [Class 60] Integral grinding-wheels have a series of spaced recesses so formed in the peripheral grinding surfaces that the edges thereof constitute continually renewed cutting-edges. They also serve to conduct coolant to the point of grinding and to carry away the scrap. For these purposes the wheel is formed with transverse radial slots 13, Fig. 1, and these slots may be parallel to the axis, or may be arranged at an angle or helically. Specifications 14502/06 and 28276/12, [both in Class 60], are referred to.
Patent GB-1206924-A (GB)
Title: Improvements in pressure-sensitive recording paper
Inventor: KATAYAMA SHIZVO
IPC: B41M5/145
Filed: 1968-06-12
Abstract: 1,206,924. Recording-paper. FUJI SHASHIN FILM K.K. 12 June, 1968, No. 4677/ 69. Divided out of 1,192,994. Addition to 1,192,994. Heading D2B. A pressure-sensitive recording paper comprises a support having coated thereon microcapsules containing as a colouring agent at least one fluorane derivative of the general formula: where each R is a C 1-4  alkyl group, and a material capable of forming colour by the reaction therewith, the colouring agent and material being in two layers, each layer containing one component. The fluorane derivative may be at least one of 3-dimethylamino-5, 7-dimethylfluorane, 3-diethylamino-5, 7-dimethylfluorane, 3-dimethylamino-6, 7-dimethylfluorane, 3-diethylamino-5, 6-dimethylfluorane, 3-diethylamino-5, 8-dimethylfluorane, 3- diethylamino-6, 8-dimethylfluorane and 3-diethylamino-7, 8-dimethylfluorane. The recording material may also contain at least one of benzoyl-leuco-methylene blue, malachite green lactone, N-phenyl-leuc-auramine, crystal violet lactone and 3, 6-diethoxy fluorane. The material capable of forming colour by reaction with the colouring agent may be Fullers earth (Japanese acid clay), attapulgite, zeolite, bentonite or kaolin.
Patent GB-586788-A (GB)
Title: Improvements relating to oscillation generators
IPC: H03B9/01
Filed: 1942-04-09
Abstract: 586,788. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd., SMYTH, C. N., and GRANT, A. S. April 9, 1942, No. 4696. [Class 40 (v)] In a generator, the output of which is dependent upon two or more variable factors, e.g. applied voltage, filament temperature, or tuning adjustment of a resonant circuit, means . are provided for controlling one of the factors as another is varied, so as to obtain optimum, or a predetermined output. The Figure shows a control arrangement for a velocity-modulated oscillator, e.g. the coaxial line oscillator described in Specification 537,490 in which a control circuit PP is used to control the oscillator anode potential so as to maintain oscillation as the resonator frequency is varied. A silicon-tungsten crystal detector may detect the oscillator output and provide a controlling voltage which is fed to terminals B and causes the valve V1 which was biassed to cut-off to pass current. In this way the charging of condenser C1 which, with neon lamp V3 and resistance R1 generates a saw tooth voltage which is applied to the amplifier V2, is arrested so that the power supply PP will remain constant at the point reached in the sweep voltage applied to the anode. Unwanted modes of oscillation may be prevented from applying a voltage to terminals B by coupling the crystal to the oscillator through a length of attenuating cable which will prevent the setting up of standing wave patterns. Alternatively the circuit or the resonator may be modified so that a high impedance is developed only in a predetermined frequency range. The control circuit is given a time constant sufficient to maintain the voltage steady throughout the modulation cycle and may have a non-linear relation between the input and the control voltage developed.
Patent GB-1099481-A (GB)
IPC: G10G7/02
Filed: 1965-02-03
Abstract: 1,099,481. Piezo-electric motors and generators. JAZ S.A. Feb. 3, 1965 [Feb. 3, 1964 ; Nov. 30, 1964], No. 4752/65. Heading H2A. A torsion-operated mechanical oscillator comprises an oscillator member carried from a support and constituted by a resilient member interconnecting two oscillating masses which subject the resilient member to torsional forces maintained by at least one energizing member fixed to the oscillator member and applying a torsion thereto in response to an applied signal, and at least one detector member fixed on the oscillator member and producing an output signal in response to the oscillation thereof, and an amplifying device through which the output signal is applied to the energizing member to maintain the oscillator member in oscillation. In the embodiment shown in Fig. 1, the oscillator member is constituted by two cylindrical masses 1, 2 interconnected by a resilient tube 3, the member being suspended from a support 6, 7 by a wire 5 secured to the tube by a component 8. The masses 1, 2 carry two energizing members constituted by piezo-electric bilaminate flexion elements 15, 16 and two detector members constituted by piezo-electric bilaminate flexion elements 11, 12. The elements 15, 16 are connected to the elements 11, 12 through an electronic amplifier (not shown). In other embodiments (Figs. 3-6, not shown), the detector and energizing members are formed by piezo-electric torsion elements. According to another embodiment, Fig. 9, the resilient shaft 3 interconnecting masses 1, 2 is supported by a disc 33 having three indents 35 spaced at 120 degrees and engaged by the pointed ends 36 of rods 37. Piezo-electric energizing and detector elements are carried by the mass 1.
Patent GB-1133662-A (GB)
Title: Process and apparatus for use in the manufacture of fibre pulp from lignocellulose containing materials
IPC: D21C1/10
Filed: 1966-02-03
Abstract: 1,133,662. Treating wood pulp. DEFIBRATOR A.B. 3 Feb., 1966 [11 Feb., 1965], No. 4773/66. Heading D2W. Fibre pulp is produced by steaming lignocellulose material (chips), impregnating with a chemical-containing liquid under a high hydraulic pressure that is greater than the superatmospheric pressure used in a subsequent cooking stage in steam and/or liquid phase, reducing the pressure to that in the cooking vessel, then cooking the pulp at the superatmospheric pressure. The high hydraulic pressure is applied whilst the material is in a compartment which forms part of a sluice device and which is separated from the steaming vessel and the cooking vessel. The hydraulic pressure can be 50kg/cm<SP>2</SP> or more. There may be a first impregnation with the chemicalcontaining liquid at a pressure lower than the high hydraulic pressure at a time after the steaming but prior to the impregnation under the hydraulic pressure. The impregnating liquid pumped to the compartment in the sluice valve may have a temperature of less than 100‹C. The material exposed to the high hydraulic pressure may sink, due to its increased specific weight, through the impregnating liquid to an outlet channel connected to the cooking vessel. There may be a second cooking stage using the same or different liquid. After cooking the material may be cooled with water before rleas of the pressure used during cooking. Steaming may be for 2-20 minutes at up to 130‹C at 5-10 kg/cm<SP>2</SP> pressure. Cooking in the presence of steam may be under 5-10 kg/cm<SP>2</SP> pressure.
Patent GB-486417-A (GB)
Title: Improvements in mouth-whistles
IPC: G10K5/00
Filed: 1938-02-16
Abstract: 486,417. Whistles. HUDSON, J. C. Feb. 16, 1938, No. 479]. [Class 13] In a variable-pitch whistle having a barrelshaped body portion 4 with an interior plunger 7 carried by a screw-threaded rod 8 engaging an internal screw-thread 5 in the body portion and extending from the rear end of the latter, the plunger-rod 8 is automatically held in its adjusted position by a coiled spring 11 bearing on the end of the body portion so as to create a frictional resistance to the turning of the rod. The spring is enclosed by a cover 10 secured to the rod 8 and formed with a bevelled edge cooperating with circumferential grooves 13 to facilitate the adjustment of the plunger 7 to produce a note of a desired pitch. A dustcap 14 for the mouthpiece 2 is attached by a chain 15 to a ring 16 secured to the cover 10. Specification 468,821 is referred to.
Patent GB-791261-A (GB)
Title: An improved varnish
IPC: C09D157/00
Filed: 1956-02-16
Abstract: An electrically conducting varnish comprises 15 to 20 per cent by weight of a vinyl chloride-vinyl acetate copolymer, 1.5 to 3.5 per cent by weight of tricresyl phosphate, 6 to 10 per cent by weight acetylene black, and enough methyl ethyl ketone to make up to 100 per cent.  The varnish may be applied to sheets of paper, fabric or rubber.  Specification 726,305, [Group XXXVI], is referred to.
Patent GB-1037772-A (GB)
Title: Improvements in or relating to í¸-steroid compounds
IPC: A61K31/568
Filed: 1963-02-07
Abstract: The invention comprises (1) a process for making ring A unsubstituted D 2,4-steroids of the androstane or pregnane series which comprises heating the corresponding 2a -iodo-3b -hydroxy-D 4-steroid with a zinc-copper couple in acetic acid; and (2) the steroids of the formulae <FORM:1037772/C2/1> <FORM:1037772/C2/2> <FORM:1037772/C2/3> wherein R is hydrogen or methyl; R1 is hydrogen, C1- 8 alkyl, C2- 6 alkenyl or C2- 8 alkynyl; R2 is hydrogen or a hydrocarbon carboxylic acyl group of less than 12 carbon atoms which is optionally substituted; Y is hydrogen, b -hydroxy or keto; and R3 is hydrogen or hydroxy but is not hydrogen when Y is b -hydroxy. Compounds of Formula A are prepared by treating 2a  - iodo - D 4 - androstene - 3b , 17b -diol or its 19-nor derivative by the process of the invention to give D 2,4 - androstadien-17b -ol or its 19-nor derivative and, when required, oxidizing these to the 17-ketones, and converting these to the 17a -hydrocarbon-17b -ols by reaction with a hydrocarbon magnesium halide or an alkyl lithium or an alkali metal alkyne and, when required, esterifying.  The compound of Formula B and those of Formula C unsubstituted in position 11 are prepared by treating a 2a -iodo-D 4-pregnene-3,20-diol (which may contain a 17a -hydroxy group) by the process of the invention to give the D 2,4-pregnadien-20-ol, oxidizing this with chromium trioxide to give the 20-one and, when required, introducing the 21-hydroxy group by the standard method via the 21-iodo and 21-acetoxy compounds.  The 21-hydroxy compounds may be esterified.  The compounds of Formula C containing a dihydroxy acetone side chain and which may also possess an 11-keto or 11b -hydroxy substituent are prepared by treating 2a  - iodo - 17,20; 20,21 - bismethylenedioxy-3-hydroxy-D 4-pregnene or its 11b -hydroxy derivative by the process of the invention to give the D 2,4-compound, oxidizing, when required, the 11b -hydroxy group to 11-keto, hydrolysing the bis-methylenedioxy group with formic acid, and, when required, esterifying. D 2,4-pregnadien - 21 - ol - 11,20 - dione is prepared by treating 2a -iodo-D 4-pregnene-3b ,11b ,20b ,21-tetrol 21-acetate by the process of the invention to give D 2,4 - pregnadien - 11b ,20b ,21 - triol 21-acetate oxidizing this to D 2,4-pregnadien-21-ol-11,20-dione 21-acetate and hydrolyxing this.  2a - Iodo - 3 - hydroxy - D 4 - steroids used as starting materials are prepared by reaction of a 3-keto-ring A saturated steroid having a 5a -hydrogen atom with bromine to produce the 2a ,4a -dibromo-compound, treatment of this with sodium iodide in acetone to give the 2a -iodo-D 4-3-keto-steroid and reduction of this.  17,20; 20,21 - Bismethylenedioxy - allopregnan - 3 - one and the corresponding 11b - ol are prepared from the corresponding steroids containing the free dihydroxyacetone side chain and formaldehyde.
Patent GB-844848-A (GB)
Title: Automatic operation controllers
Inventor: FURNIVALL IVOR MAURICE
IPC: G05B19/02
Filed: 1956-02-20
Abstract: 844,848. Machine-tool details. INDUSTRIAL GUARDING EQUIPMENT Ltd. Jan. 9, 1957 [Feb. 20, 1956], No. 5135/56. Class 83 (3). [Also in Group XXXV] A switching system for controlling a plurality of sequential operations comprises a switch having an annular contact ring 5, Fig. 2, arranged concentrically within a plurality of equispaced commutator segments 6 and a rotary radial arm carrying three brushes 9- 11 which connect the ring 5 with segments 6. Brushes 10, 11 may be offset from each other by a small angle. Each segment is connected to a socket grouped on a panel together with groups of plugs 15a-15h, 16a-16h, Fig. 3. Plugs 15a- 15h are each connected to relay coils 20a-20h which are held through contacts 21a-21h and further contacts 22a-22h control the external circuits through terminals 25a-25h. The second set of plugs 16a- 16h connected to relays 18a-18h release the relays 20a-20h through normally closed contacts 19a-19h. By connecting pairs of terminals an external circuit can be operated several times each revolution of brushes 9-11. In an alternative arrangement, the circuits may be controlled by means of a number of photocells arranged in a circular arc, operated by a rotating light source, or shutter arrangement. The rotary switch may be driven in synchronism with the crankshaft of a power press or the power source of a machine tool to control various operations in a determined sequence. Alternatively the switch may be driven at constant speed and the external circuits arranged to control a multiplicity of conveying mechanisms of a mechanical handling apparatus.
Patent GB-922660-A (GB)
Title: Conveyor for articles such as containers
IPC: B65G23/00
Filed: 1961-02-13
Abstract: 922,660. Endless-conveyers. SCHWEIZERISCHE INDUSTRIE - GESELLSCHAFT. Feb. 13, 1961 [Feb. 23, 1960], No. 5195/61. Class 78 (1). Carriers 8 having holders 9 for conveying articles (not shown) are temporarily stopped at points A, B, C, D by causing an endless chain 1 to pass around guide rollers 13 positioned between sprockets 2. Each carrier has rollers 6, 7 for engagement in guide rails 3, 4 and a coupling 10 secured to a link of the chain carries a roller 11 which engages in a slide path 12 provided on the carrier. In Fig. 2, as the link carrying a coupling 10 approaches point X after passing around the central sprocket 2 of the three sprockets shown, the carrier slows and then stops when the link leaves the sprocket, the roller 11 having moved down from its normal position at the top of the slide path 12. The carrier remains stationary until the coupling 10 reaches point Y when the carrier again begins to move along the rails 3, 4 and attains normal speed when the coupling 10 reaches point Z. The duration of dwell of the carriers may be varied by adjusting the distance between the sprockets 2 and the rollers 13.
Patent GB-110496-A (GB)
Title: Improvements in Ignition Dynamo Electric Generators.
Inventor: PONTOIS LEON JULES LE
IPC: H02K21/38
Filed: 1917-04-13
Abstract: 110,496. Le Pontois, L. J. April 13, 1917. Inductor - alternators. -The magnet structure comprises a combined base and pole-piece 2 having a pole-face 2<a> and a hollow upper core portion 3 to which laminated pole-extensions 8, 9 are secured by dovetails; straight bar magnets 21 are fixed by screws to the parts 2, 3 with their like poles contiguous. The magnets 21 and non-magnetic end plates 4, 5 form a dust-proof and water-tight casing. The inductor 14 is laminated and is mounted between a shoulder and a pin 17 on the shaft 13. The generating coil 23 is located upon the pole 8 and comprises primary and secondary sections joined respectively to interrupter and distributor contacts. A safety spark-gap is provided between a conducting-plate 55 and the high-tension terminal plate 46. A condenser 56 is mounted on the poleextension 9. A cam 25 on the shaft 13 engages a spring-pressed lever 26 which is pivoted on a stud 27 and carries a contact 28; the other contact 29 is mounted adjustably on one of the outwardly turned ends of an are-shaped plate 30 which carries a binding-post 30<a> for the lowtension conductor. The lever 26 is secured on the stud 27 by means of a clip 32. The operation of the interrupter is so timed that the circuit of the primary generating coil remains open until the increase of flux through the pole-extension 8 has ceased, the current induced in the primary coil being due always to decrease of flux through said coil; the magnetomotive force due to the current in the primary coil thereby acts always with the magnetomotive force of the permanent magnets and not against it. A block 41 of insulation is mounted within a gear-wheel 37 and contains a brush 43 bearing upon the high-tension terminal plate 46 and a brush 49 engaging the stationary distributor contacts; these contacts are carried by a block 51 of insulation secured in position by fingers or clips 53 which are pivotally connected at 54 to the end plate 5 and have hook-shaped ends engaging notches in the front of the block 51.
Patent GB-716956-A (GB)
Title: Improvements in or relating to refractory materials
IPC: C04B35/48
Filed: 1951-03-05
Abstract: A coherent refractory body consists substantially of mullite, zircon and zirconia crystals embedded in a siliceous vitreous matrix, the total content of zirconium reckoned as ZrO2 being between 27 and 54 per cent, and the matrix being less than 20 per cent.  It is obtained by heating a composition within the ranges of zircon 40-80 per cent.; china clay 20-60 per cent.; and uncombined alumina 0-40 per cent.; at a temperature of at least 1500 DEG C. and sufficiently high in relation to the uncombined alumina to ensure that the product contains some free zirconia. The ingredients are slurried with water containing deflocculating agents, e.g. sodium carbonate and silicate, the slurry cast in a mould, and when dried the mould removed and the casting fired. Specification 682,961 is referred to.