baber/WOPTO huggingface dataset:
Patent GB-389134-A (GB)
Title: Improvements in or relating to the manufacture of acetaldehyde
IPC: C07C45/38
Filed: 1931-09-11
Abstract: Acetaldehyde is produced by the oxidation of ethyl alcohol in presence of at least its own weight of water vapour, 2-9 times the weight being mentioned.  The oxygen or air may be the theoretical quantity or more or less.  When less than the theoretical quantity of oxygen is employed, the excess of alcohol may be converted to acetaldehyde by dehydrogenation at temperatures such as 400-500 DEG C., especially with active catalysts such as silver or copper or their oxides.  The reaction gases may be preheated to 80-120 DEG  C. The water may be partly or wholly removed from the reaction vapours before the condensation of the acetaldehyde, for example by passing over a water binding agent as described in Specification 389,135; or the acetaldehyde may be separated from water and unchanged alcohol by fractional condensation; or the water and alcohol may be removed by scrubbing the vapours with a liquid having no solvent action on acetaldehyde as described in Specification 389,145, or the vapours may be treated with a liquid which dissolves acetaldehyde at a temperature at which the water is not condensed as described in Specification 390,506.  The acetaldehyde may be condensed in any suitable way; if it is to be further oxidized to acetic acid, it may be absorbed in glacial acetic acid.
Patent GB-747172-A (GB)
Title: Improvements in or relating to propulsion mechanisms
IPC: B64C39/00
Filed: 1950-10-19
Abstract: 747,172. Propelling aircraft and ships. POWLEY, C. F. B. Oct. 4, 1951 [Oct. 19, 1950], No. 25555/50. Class 4. A propulsion mechanism comprises a plurality of aerofoils extending lengthwise between the end members of a cage, each of said aerofoils having a longitudinally extending surface which is concave with respect to the median plane and transversely thereof, and having shafts or spigots extending from the ends thereof and journalled in the said end members to support the aerofoil for angular displacement about a longitudinal axis corresponding substantially with the centre of pressure, said cage comprising a pair of annular end members united by brace members or struts secured thereto and being supported upon a shaft on the longitudinal axis thereof, means for rotating the cage, and means for effecting angular displacoment of said aerofoils to vary the angle of attack of the aerofoils as the cage is rotated, said lastmentioned means comprising elements on said shafts and means for operating said elements as the cage rotates whereby the aerofoils oscillate about said shafts. The embodiment described relates to the propulsion of aircraft and a fuselage 1 carries pylon structures 6 provided at their apices with bearings 11 to carry a transverse shaft 10 to which are fixed circular end members 8. Cambered aerofoils 12 are each pivotally mounted at each end in a member 8 by means of spigots 13 which are extended by cranks 14 that terminate in pegs 15 running in a grooved plate 17 eccentrically mounted so that the pitch of the blades is varied cyclically. The plates 17 are slotted at 18a for fore and aft movement on pegs 18 to enable the amplitude of the pitching angle to be varied. The blades may be formed with end plates (Figs. 8 and 9, not shown) and the blades may be formed with a diehedral angle (Fig. 7, not shown). Other methods of causing pitch-changing movements of the blades are described which incorporate radially disposed push rods having rollers at their inner ends to engage a central cam and, at their outer ends, either pivotal connections with the aerofoils at points offset from spigots 13 or toothed racks which engage pinions coaxial with the spigots. Specification 189,751, [Class 4], is referred to.
Patent GB-713965-A (GB)
Title: Improvements relating to apparatus for the handling of grain and other granular, pulverulent, and fluent solid materials
Inventor: JARDINE ALEXANDER
IPC: B65G53/60
Filed: 1951-11-01
Abstract: 713,965. Pneumatic conveyers. JESSOP & CO., Ltd. Feb. 2, 1953 [Nov. 1, 1951], No. 25600/51. Class 78 (1) Apparatus for handling grain and like material comprises a platform or runway, 10, Fig. 1, erected above a number of laterally displaced storage bins or cleaning, drying, bagging and like machines, a mobile suction unit mounted on castors, wheels &c. 12 to travel on the platform, an exhaust fan 13 mounted above its driving motor 14, a suction chamber 15, an extractor 16 of the bladed rotor type mounted below the lower end of the chamber 15 and a motor 17 with associated reduction gearing for driving the extractor. A suction inlet fitting 23 mounted on the sloping wall 19 of the chamber leads into a diffuser conduit 24 which is approximately semicircular in contour and extends to a position above the extractor 16. The bore of the conduit is of rectangular cross-section and increases gradually in size towards its delivery end. The outer wall 25 is of sheet rubber..The blades 27, Fig. 5, of the extractor are formed with arcuate trailing laps 32 and its casing 26 adjacent the inlet 29 is cut away at 33 in the direction of rotation of the rotor to prevent damage to the grain.
Patent GB-1018025-A (GB)
Title: Improvements in semiconductor rectifying installations
IPC: H02M7/06
Filed: 1964-06-22
Abstract: 1,018,025. Rectifying. MASCHINENFABRIK OERLIKON. June 22, 1964 [June 27, 1963], No. 25677/64. Heading H2F. In a polyphase semi-conductor rectifier installation for supplying an electric railway system, the rectifier elements are protected from power overloads by designing the rectifier supply transformer to have a high percentage reactance and by providing a series-connected inductance on the D.C. side, the combined effect of which is to drop the output voltage sharply on heavy current overloads (as illustrated graphically in Fig. 1, not shown). In the 9-phase embodiment shown in Fig. 2 the supply transformer secondary comprises phase windings 3a, 3<SP>1</SP>a, 3<SP>11</SP>a which are interwound, i.e. magnetically tightly coupled, and feed rectifier bridges 4a seriesconnected by inductances 5a. Fig. 3 (not shown) illustrates a 12-phase embodiment employing a series-parallel arrangement of bridge rectifiers. The 9- and 12-phase embodiments give respectively 18 and 24 ripple voltage pulses in the D.C. output per cycle of the supply. For railway systems of 2-5 MVA power range the normal percentage reactance of the supply transformer is stated to be 8-10%. It is stated that for an installation giving at least 12 pulses per cycle of the supply the transformer should have a percentage reactance at least half as much again as is normal. In a modification, not shown, rectifier elements may be used in parallel to absorb current peaks and satisfactory parallel operation of semi-conductor and mercury vapour rectifiers is said to be possible.
Patent GB-444017-A (GB)
Title: Improvements relating to the drying of materials
IPC: F26B17/10
Filed: 1934-09-06
Abstract: 444,017. Drying systems. ESCHWERKE K. G. MASCHINENFABRIK UND EISENGIESSEREI, 72, Liebigstrasse, Hochfeld, Duisburg, Germany. Sept. 6, 1934, No. 25708. Convention, date, Sept. 7, 1933. [Class 34 (ii)] In a method of drying granular or like material the finer constituents of the material are dried while being carried upwards by a current of hot gas and the coarser constituents are dried as a result of alternately falling down in counter-current to a current of hot gas and being carried upwards by a faster current of hot gas. In the construction shown in Fig. 1, the material is fed into a drying chamber at 5 and the finer material is taken up through a conduit 9 by hot gas which enters the apparatus at 4. The coarser material falls down the channel 1 and is forced up through the channel 2 where the pressure of the gas is greater than that in the channel 1. By the adjustment of a flap 6 and a pipe 8 material above a certain coarseness is caused to separate out and fall down the channel 3 while the finer material is taken up through the conduit 9. The waste material arriving at the bottom of channel 3 is again taken up channel 2 and part of it may again descend the channel 3, this procedure being repeated until the material is dry enough and light enough to be carried up through the conduit 9 to be collected in a separator. In a modification five channels are provided in two of which the hot gas is at a greater pressure than in the other three. In the apparatus shown in Figs. 5 and 6, the channels 1, 2, 3 are arranged concentrically. Adjustable members 11, 12, 13, and 19 are provided for regulating the flow of hot gas. A rotary device 7 may be provided for throwing the falling material into the path of the gas current. In a further construction a disintegrator is provided at the bottom of the apparatus for breaking up the coarse particles of the material being dried.
Patent GB-389486-A (GB)
Title: Improvements in pneumatic rock drilling machines
IPC: E21B19/086
Filed: 1931-09-14
Abstract: 389,486. Feeding percussive drills AKTIEBOLAGET ATLAS DIESEL, Stockholm. Sept. 14, 1931, No. 25781. Convention date, Sept. 12, 1930. [Class 124.] A percussive drill has its fluid feed automatically reversed at the end of the feed stroke. Pressure fluid from the supply 8 enters the percussive cylinder 1 by the distributing valve 5 and also the feed cylinder 79 by the conduits 28, 15, 16, the spaces 19, 25 meanwhile being open to the atmosphere through an aperture in the control cock 11. When the piston 78 passes the opening of the byepass 26 pressure air passes from the cylinder 79 through conduits 26, 21, 22 to act in the space 25 on the end face of the slide valve 13. This then closes the port 14, stopping the percussive action and also closes the passage 15, stopping the forward feed. Pressure fluid now passes through the conduits 27, 25, 22, and commences the return feed, at the end of this stroke cock 11 is turned by hand, venting the space 25 and thus returning the slide valve to its forward feeding position, but feed and percussion are not recommended until the cock 11 is restored by hand.
Patent GB-172709-A (GB)
Title: Improvements in and relating to jacks and safety brakes for motor vehicles
IPC: B60S9/04
Filed: 1920-09-07
Abstract: 172,709. Scott, W., Goldsmith, J. B., and Shamsky, J. Sept. 7, 1920. Clutches, ratchet.-A pulley 24, normally free on its shaft 18, is automatically connected thereto when a rope 29, wound on the pulley, is pulled. The rope normally rests on one end of a spring- pressed pawl 27 so that the pulley is loose on the shaft, but when the rope is pulled the pawl is released and connects the pulley to the shaft so that the latter is rotated.
Patent GB-893962-A (GB)
Title: Improvements in or relating to apparatus for controlling the activity of a reactor
IPC: G21C1/00
Filed: 1958-08-12
Abstract: 893,962. Reactor control rods. HUET, A. Aug. 12, 1958 [Sept. 26, 1957], No. 25924/58. Class 39(4) In the nuclear reactor a having vertical fuel elements b, the control rods c are pivotted at points d above the core, inside the shield, and may be moved downwards between the fuel elements by turning about the pivots. Each control rod is held at its lowest position by a stop so that the rods are spread out fan-wise in the vertical plane. The rods may be moved by gravity or by a mechanical linkage and may be elliptical in shape.
Patent GB-1090319-A (GB)
Title: A textile finishing process
IPC: D06M15/347
Filed: 1965-06-18
Abstract: Textiles are crease proofed, rendered antistatic, dimensionally stable and more easily dyable and given improved wettability and lower sensitivity to dirt by impregnating them with an aqueous medium containing 0.05-20% by weight of polyacrolein or an a -substitution derivative thereof, or a copolymer thereof with a vinyl monomer optionally in the form of SO2 or alkali or alkaline-earth metal bisulphite compounds at a temperature of below 100 DEG C, removing any substantial excess of the treating medium, optionally tempering them to dryness, heat-treating them at a second temperature which is higher than the first temperature which is higher than the first temperature and is at least 50 DEG C and if desired subjecting them to a known finishing process.  The a -substitution product of polyacrolein may be polymethacrolein or polychloroacrolein and the vinyl monomers used to prepare the copolymers may be styrene, methyl methacrylate, acrylic acid, acrylates, acrylonitrile, acrylamide, methacrylamide and vinyl acetate.  The aqueous medium may be given an acid pH by the addition of hydrochloric, sulphuric, formic, acetic or p-toluene sulphonic acid or ammonium sulphate or an alkaline pH by the addition of alkali metal carbonates or hydroxides, alkaline earth metal hydroxides, primary, secondary or tertiary mono-, di- or triamines e.g. piperidine, ethylene diamine, hexamethylene diamine, triethanolamine, diethanolamine, monoethanolamine and triethylamine, hydrazine or ammonia.  The polyacrolein may have a molecular weight of 1,000-1,000,000. Textile auxiliaries e.g. wetting agents, dispersants, detergents, sizing and stiffening agents, brightening agents, delustering agents, wool-protecting agents, mothproofing agents, complex formers, dyeing auxiliaries, printing auxiliaries, plasticisers and antistatic agents, may be present during the treatment with the polyacrolein.  Fabrics comprising cotton, flax, bast fibres, wool, silk, viscose rayon, casein fibres, cellulose triacetate, polyvinyl chloride polyvinylidene chloride, polypropylene, polyacrylonitrile, polyvinyl alcohol, polyamide, polyester, polyurethane, glass, metal or asbestos fibres may be treated. Woolen fabrics may be brushed while moist and dried at a higher temperature in the second stage or after impregnation may be ironed into creases at the higher temperature.
Patent GB-1286927-A (GB)
Title: Electric shutter control network for a camera
Inventor: MORI CHIHARU
IPC: G03B7/083
Filed: 1971-04-19
Abstract: 1286927 Photographic camera shutter control ASAHI KOGAKU KOGYO K K 19 April 1971 [11 May 1970] 25959/71 Heading G2A An electric shutter control for a camera comprises an emitter follower circuit Q 2  and a logarithmic expansion circuit Q 3  coupled to a photovoltaic element D through a buffer circuit Q 1 , the load resistance R F  A  SA  of the emitter follower circuit being determined by the diaphragm value and film sensitivity so as to accomplish photographic computations. During exposure, a charging current i is applied to a capacitor C until the voltage thereon equals the trigger level of a switching circuit including transistor Q 4 , whereupon thyristor Q 5  fires to short circuit electromagnet M.
Patent GB-1079901-A (GB)
Title: Improvements in or relating to the processing of irradiated nuclear fuels
Inventor: NORDWALL HERMAN JOHN DE
IPC: G21C19/46
Filed: 1963-07-01
Abstract: Strontium-90 is extracted from fission product solutions by adding nitric acid to make the solution 15-17 N, thereby precipitating the nitrates of strontium and barium, and then treating the precipitate with dilute nitric acid to leach out strontium nitrate. Precipitation may be effected at 55 DEG  C. and the precipitate then dissolved and reprecipitated at 35 DEG  C.  The solution used for leaching out the strontum nitrate may be 5 N in nitric acid. Reference has been directed by the Comptroller to Specification 844,376.
Patent GB-756281-A (GB)
Title: Improvements in or relating to apparatus for removing foreign material from liquid
IPC: B01D33/00
Filed: 1954-09-08
Abstract: 756,281. Filters. MURRAY, E. E. Sept. 8, 1954 [Sept. 8, 1953], No. 26004/54. Class 46. An apparatus for removing foreign material from liquid including a tank 3, a cylindrical member 6 having a perforate peripheral surface 19 and imperforate end members 7, 8 with aligned central openings 10, 11 therethrough, rollers 24, 25 mounting the member 6 with the lower peripheral portion thereof disposed within the tank 3 for rotation about an axis inclined to the horizontal, a trough 2 and channelled shoot 36 for conveying liquid carrying foreign material into the member 6, and a motor 31 with mechanical transmission to intermittently partially rotate the member 6, has a scraper 43 mounted within the member 6 and engaging the inner surface 19 to remove foreign material therefrom, and a discharge shoot 50 disposed within the member 6 under the scraper and extending outwardly thereof to remove said foreign material from said member. As the liquid carrying the foreign material drops on to the wire mesh surface 19 the solid materials are retained by the mesh and the liquid passes through. As the mesh becomes clogged, the liquid level inside the member 6 rises and lifts a float 40 which closes a switch to actuate the motor 31 so that the member 6- is rotated to present clean mesh to the liquid which flows therethrough, allowing the float 40 to drop and switch off the motor until the process is repeated. Foreign material clinging to the mesh 19 is carried upwards to the scraper. Clumps of the material too heavy to remain on the mesh gravitate to and are carried upwards by pick-up elements 54 mounted on the end member 8. In a modification the discharge shoot 50 is flexibly mounted and is vibrated by actuator members on the end member 7 engaging a cam on the shoot. The end members 7 and 8 are held in proper relationship to each other by braces 14 uniformly spaced about the periphery of the members. In another embodiment the mesh member 19 is shorter than the circumference of the member 6, the ends being connected together by bolts and an imperforate plate member which is curved to the curvature of the member 6, so that the mesh band may be readily removed for replacement and said plate may be readily removed to provide access to the interior of the member 6.
Patent GB-1114774-A (GB)
Title: Improvements in or relating to catalysts useful in the dehydrogenation of organic compounds
IPC: C07C5/48
Filed: 1965-06-21
Abstract: Hydrocarbons, preferably those containing 4-7 C and including paraffins and olefins are dehydrogenated by contact in the vapour phase at at least 250 DEG  C. with from 0.2 to 2.5 mols. per mol. of oxygen and a catalyst comprising Fe, P and O and a metal selected from Mg, Zn, Co, Ni and mixtures thereof such that the ratio P:Fe is 0.002 to 0.25:1 and the ratio other metal:Fe is 0.05 to 2:1. Reference is made to the dehydrogenation of butenes-1 and -2, 2-methylbutenes-2 and -3, n-butane, 1:3-butadiene, methyl butane, 2-methyl pentene-1, cyclohexene, and 2-methylpentene-2.  Examples describe the dehydrogenation of butene-2 to butadiene.ALSO:Dehydrogenation catalysts comprise (1) Fe (2) P and (3) one or more of Mg, Zn, Co, and Mi such that the ratio 2/1 =0.002 to 0.25/1 and 3/1 =0.05 to 2/1 .  The catalyst may be conventionally supported on e.g. Al2O3 pumice or SiC. The catalyst may additionally contain Si e.g. as SiO2 and/or Mn.  The Fe may be present as a ferrite and P as a phosphate. The dehydrogenation may be effected in the presence of a halogen-containing vapour.  If desired the catalysts may be prereduced e.g. in hydrogen.  Regenation of the catalysts may be effected by burning off coke followed by reduction.
Patent GB-684721-A (GB)
Title: Fuze for rocket projectiles
IPC: F42C15/184
Filed: 1950-10-25
Abstract: 684,721. Projectile fuzes. VERWALTUNGSGES. DER WERKZEUGMASCHINEN-FABRIK OERLIKON. Oct. 25, 1950 [Nov. 24, 1949], No. 26053/50. Class 9(i) Projectile fuze adapted to be armed after launching has a body 1 screwed into the casing 2 and carries a detonator 3. The head 8 of a striker pin 5 held by a spring 6 is enclosed by a cap 7, which may be of synthetic plastic material. The body 1 is provided with a groove 4 in which is a slide 10 having a primer cap 11 at one end and a blind bore 12 at the other. A leaf spring 13 bearing against the casing 2 tends to move the slide to a position where the cap 11 is in alignment with the pin 5 and a relay charge 14 in an axial bore. through the body 1. In the safety position, Fig. 1, the slide is held by a pin 15 movable in a longitudinal bore but held by a safety pin 16 having a conical tip 17 engaging a conical bore 18 in the pin 15. The conicity of the tip 17 and bore 18 is such that lateral movement of the pin 16 can take place when pressure is applied to the pin 15. The pin 16 is held against movement by a sleeve 9 having a toothed rack 20 meshing with a pinion 21 connected to a spur gear 22 engaging an oscillator body 19. A plunger in the sleeve bore is fitted with a collar 26 against which bears a spring 24. On launching, the plunger slides rearwardly against the action of the spring 24 and the sleeve tends to move rearwardly, but is delayed until the oscillator 19 has been moved by the spur gear 22. When the sleeve reaches its final position, the pin 16 is released and pushed out by the pin 15 which then moves rearwardly and frees the slide 10. The spring 13 forces the slide transversely so that the cap 11 becomes aligned with the striker. The sleeve 9 and the plunger may be locked in the armed position by the pin 16 after the pin has been pushed partially from its hole. On impact the cap 7 is compressed and the striker forced into the cap 11 to ignite the relay 14 and explode the detonator 3.
Patent GB-362381-A (GB)
Title: Improvements in bladed projectiles
IPC: F42B10/16
Filed: 1930-09-01
Abstract: 362,381. Projectiles. BRANDT, E. W., 101, Boulevard Murat, Paris. Sept. 1, 1930, No. 26055. Convention date, May 22. [Class 9 (i).] A projectile 1, Fig. 1, especially intended for a smooth-bore gun is provided at its tail with blades 38 hinged on longitudinal pivots 41 and so shaped that when opened out they are convex to the projectile, as shown in Fig. 2. In the closed position, Fig. 4, the blades lie one over another around a socket 7 for the propellant cartridge and are secured by lead wires 47, and additional propellent charges 51 may be placed over the blades. The socket and the blades are perforated to allow free passage to the propellent gases when the charge is ignited. The wires 47 are fused by .the heat of these gases and, when the projectile leaves the gun, the blades are swung open by springs 48. The Specification as open to inspection under Sect. 91 (3) (a) describes also constructions of projectiles in which various forms of single or multiple blades are pivoted on transverse axes or carried by an extensible slidable tail-piece. This subject-matter does not appear in the Specification as accepted.
Patent GB-404247-A (GB)
Title: Improvements in or relating to chimney-pots
IPC: F23L17/02
Filed: 1933-09-21
Abstract: 404,247. Making chimney-tops. WENMAEKERS, P., 73, Boulevard Lambermont, Brussels. Sept. 21, 1933, No. 26116. Convention date, Oct. 27, 1932. [Class 83 (ii).] Each of a number of hooded apertures 2b in the sides of a metal chimney-top is formed by cutting the flue downwardly from the upper edge along a line forming the centre of the aperture and also along a horizontal line forming the lower edge of the aperture. The parts on each side of the vertical cut are bent outwards to form radial partitions or shields 2d which at the upper ends are severed from the flue and bent over to meet at 2g to form a hood 2f.
Patent GB-284022-A (GB)
Title: Improvements relating to clock controlled switch mechanism and the like
IPC: G04C23/24
Filed: 1926-10-22
Abstract: 284,022. Graseby, R. C. Oct. 22, 1926. Clockwork actuation.-At a predetermined time, a lever 16, controlling or effecting the actuation of an electric switch or a valve is struck by a pin 15 on a lever 14 pivoted to an arm 10 rotated by clockwork. the pin 15, during the rotation of the arm 10, bearing against a stationary internal cam surface 5 provided with a step 6. The arm 10 is set to the time required. It then moves round in the direction of the arrow and the pin 15, moving nearer to the centre 2 under the influence of the cam surface, strains a spring 12 connected between the other arm of the lever 14 and a branch 13 of the member 10 till the pin 15 reaches the step 6 and is suddenly forced by the spring over the step. During this quick movement the pin strikes the lever 16 and actuates the switch or valve. Several arms 10 may be provided on the same device, adapted to operate several switches or valves at different predetermined times.