baber/WOPTO huggingface dataset:
Patent GB-743493-A (GB)
Title: Improvements in gas turbine engines
Inventor: MARCHAL RAYMOND HIPPOLYTE
IPC: F02C5/02
Filed: 1953-03-10
Abstract: 743,493. Gas turbine plant; jet propulsion plant. SOC NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. March 10, 1953 [March 11, 1952], No. 6641/53. Addition to 728,451. Drawings to Specification. Class 110(3) A gas turbine engine as claimed in the parent Specification has combustion chambers of the short intermittently operating type as defined in Specification 743,492. These combustion chambers comprise a combustion chamber connected on one side to a valve or other non-return device for the admission of fresh air and communicating at the other side with an ejection tube which has insufficient length to provide self-filling of the chamber by pulsation of the ejected gases, the filling of the chamber being effected by a scavenging device which maintains, during normal operation of the unit, a total air pressure at the entry to the chamber which is always greater than the static obtaining at the outlet of the ejection tube. The particular embodiment described is similar to that described in the parent Specification except that means are provided to obtain a scavenging pressure drop across the combustion chambers. Means may also be provided to vary the frequency of operation of the combustion chambers.
Patent GB-988011-A (GB)
Title: Improvements in and relating to the production of esters of unsaturated alcohols
Inventor: CLARK Duncan
IPC: C07C69/145
Filed: 1961-02-23
Abstract: Carboxylic esters of unsaturated alcohols are produced (cf Specification 964,001) by contacting an olefine other than an alpha olefine and containing the structure -CH = CH-, with a palladium salt, especially the halide or carboxylate and preferably the chloride, in the presence of a carboxylic acid and carboxylate ions, especially in the form of alkali metal carboxylate.  The olefin may contain 4 to 20 carbon atoms as, e.g., n-butene-2 or n-octene-2 and cyclohexene, or may be carbocyclic, e.g. cyclohexene.  The carboxylic acid may be aliphatic or aromatic mono- or dicarboxylic and the carboxylate ions may be derived from the same acid.  A redox system, a number of which are specified, regenerable by molecular oxygen may be present to prevent precipitation of palladium metal.  From 5-80% by volume of the total reaction mixture of one or more of acetamide, methyl or dimethyl acetamide, dimethyl formamide, urea, acetonitrile, benzonitrile, dialkyl, notably dimethyl sulphoxides, may be employed as solvents.  Other reaction conditions of temperature, pressure and the equipment in which the reaction is preferably performed are specified and include a falling film reactor and a two-zone reaction apparatus, in one of which the olefin contacting and product separation take place and in the other the redox system is regenerated with molecular oxygen and water is removed.  The examples relate to the conversion of n-butene-2 and cyclohexene to the acetates.
Patent GB-1533482-A (GB)
Title: Method and apparatus for steam/water separation
IPC: B01D45/12
Filed: 1977-01-06
Abstract: 1533482 Steam separator CLARKE CHAPMAN Ltd 6 Jan 1977 [20 Feb 1976] 06734/76 Headings BIT and B2P A steam/water separator comprises at least one centrifugal separator to effect a first separation and a scrubber assembly to effect a second separation; steam leaving the centrifugal separator being passed around an imperforate baffle before reaching the scrubber assembly and steam leaving the scrubber being passed through a perforate baffle, the two baffles being designed to produce a uniform velocity distribution of steam entering the scrubber assembly. Figures 1 and 2 show a vessel 10 having a pair of steam-water mixture inlets 22 leading via an annular plenum 24 and vertical channels 30 to a plurality of pairs of centrifugal separators 20 arranged in parallel. In each separator, the mixture is arranged to flow in a downward spiral path, water being collected for removal at the vessel base and steam escaping through central opening 36. Separation flow is in opposite directions in each separator of a pair. Separated steam then flows around imperforate baffle 18 to scrubber 14. This may comprise a polygonal, e.g. hexagonal, array of scrubber units, each comprising arrays of superimposed corrugated plates defining tortuous separating paths. Hollow tubes at the apices of the polygon remove separated water. Suitably, each face of the polygon comprises a plurality of vertically spaced units, each slightly inclined to the vertical so that their lower ends are inward in the flow direction of their upper ends. A water droplet agglomerator 16, e.g. knitted wire mesh, may be arranged upstream of the scrubber. The steam leaves the scrubber via perforate baffle 12. The vessel 10 may be a start-up vessel for a steam power generator boiler and may have appropriate heating, feed water &c. connections.
Patent GB-1464858-A (GB)
Title: Film transport apparatus
IPC: G03B1/22
Filed: 1973-02-12
Abstract: 1464858 Automatic control of tension COLOUR CASSETTES Ltd and COLORCASSETTE Inc 9 May 1974 [12 Feb 1973] 6737/73 Headings G2E and G3R A film projector has a transport apparatus comprising a gate 12, an intermittent film feed mechanism 13 co-operating with the gate, a take-up sprocket 14, a sound track sensor 15 between the sprocket and the gate, means such as dancer lever 16 for detecting shortening of the film loop between the gate 12 and sensor 15, and a clutch in the sprocket drive and disengaged by the dancer when the loop is reduced below a pre-set length. The clutch comprises a driving part 34 carrying studs 38 which may engage in corresponding holes 39 in a disc 37. The disc is screwed to a toothed pulley 32 which is coupled by a toothed belt 31 to a pulley 30 fast on the shaft 28 of the sprocket 14. Shortening of the film loop causes the dancer to close a micro-switch 27 thus energizing solenoid 48. Piston 47 of the solenoid is thereby pushed out, and lever 43 displaces the pulley 32 axially on shaft 33 to free the pulley from the studs 38. The part 34 is driven by a motor via a worm 36.
Patent GB-511372-A (GB)
Title: Improvements relating to tins or other containers
IPC: B65D43/02
Filed: 1938-03-04
Abstract: 511,372. Tins &c. MILLER, F. W. K. March 4, 1938, No. 6827. [Class 66] The dished lid of a paint tin &c. is provided with a pair of lugs 7 pivotally mounted in sockets 4 secured to the vertical wall 3, the upper arms 7<1> of the lugs, when turned outwardly, being adapted to be engaged by the bail handle 6 to raise the lid.
Patent GB-378031-A (GB)
Title: Improvements in conveyors, escalators, or the like
IPC: B65G23/00
Filed: 1931-03-05
Abstract: 378,031. Endless chain conveyers ; escalators. EXPRESS LIFT CO., Ltd. and MEACOCK, J. H., Greycoat Street Works, Westminster, London. March 5, 1931, No. 6879. [Class 78 (i).] In a driving sprocket 12 the members 14, which engage the joints of the driving chain, are moved in radial slots 13 by a cam 16 in order to make the velocity of the chain before engagement with, and/or after disengagement from, the wheel constant, or nearly constant, and not variable as in the case of a wheel of similar size provided with the same number of fixed tooth spaces. The cam 16 is keyed to a fixed shaft 18 on which the sprocket 12 rotates. Springs 24 maintain rollers 15 mounted on the inner ends of the members 14 in engagement with the cam.
Patent GB-453354-A (GB)
Title: Improvements in or relating to electric ovens
IPC: F24C15/32
Filed: 1935-03-05
Abstract: 453,354. Automatic control systems. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London, and WRIGHT, S. R., 113, London Road, Bedford. March 5, 1935, No. 6896. [Class 38 (iv)] [See also Group XI] Temperature.-In an electric cooking-oven in which air enters through an opening or openings 9 at or near the bottom where it is heated by elements 3, a heat sensitive device 8 controlling the elements 3, is arranged in the oven at about threequarters of the height thereof. A baffle plate 6 with openings 7 is arranged above the elements 3 and top elements 4 are arranged above a baffle plate 5. Ovens with elements in side flues are described. The device 8 is described in Specification 432,909, [Group XIII], and cuts out the elements 4 at a low temperature.
Patent GB-609098-A (GB)
Title: New or improved method of and means for cooling and so setting gelatine and like colloidal substances
IPC: C09H9/02
Filed: 1946-03-06
Abstract: 609,098. Solidifying liquid films. WILSON, E. G. March 6, 1946. No. 6908. [Class 29] [Also in Group XXX] Apparatus for cooling and setting gelatine &c. in sheets comprises a casing 1, containing a coolant, in which rotates a wheel 4, 4a. Around the wheel is an endless steel belt 7 tensioned by a spring arm 10 carrying rollers 11 and fitted with edge strips 9 which fit recesses 5a on the wheel flange 5. The strips 9 engage another endless belt 8 led round the wheel 4, 4a and pulleys 12, 12a, 12b, 12c one of which is spring-tensioned. Liquid gelatine or like colloidal substance fed between the belts 7, 8 adjacent the pulley 12 is carried in the space between these belts round the wheel 4, 4a where it is surrounded on all sides by coolant liquid which circulates through ports 18 in the wheel flange 5. The solidified sheet is led over the pulley 12c, past a cutter 22 on to a conveyer 20. The wheel 4, 4a and the pulleys are power-driven. The edge strips 9 may alternatively be fixed to the belt 8. A suction pump regulates the level of liquid fed between the belts.
Patent GB-1526623-A (GB)
Title: Printing press convertible from intaglio to flexographic printing and vice versa
IPC: B41F11/00
Filed: 1977-02-18
Abstract: 1526623 Intaglio/flexographic conversion of press WINDMOLLER & HOLSCHER 18 Feb 1977 [10 March 1976] 06941/77 Heading B6C A printing press which converts between intaglio and flexographic printing comprises a steel impression cylinder 10 vertically displaceable by means of carriage 12 sliding on rods 13, a rubber impression cylinder to which pivots on arm 16 about the axis of cylinder 10 and a web guide roller 3 which is horizontally displaceable on carriage 12. In the intaglio mode, Fig. 1 (not shown), steel cylinder 10 acts as a support for rubber cylinder 4 which co-operates with intaglio plate cylinder (7), while web 1 is guided by rollers 2 and 3 to the printing nip; on conversion to flexographic mode plate cylinder 19, Fig. 2, is exchanged for cylinder (7) rubber cylinder 4 is pivoted about axis of steel cylinder 10 while roller 3 moves over the top of steel cylinder 10 to alter the web path, and prevent slip between the web and the cylinder. Additionally, roller 18 may be pivoted into position for the same purpose.
Patent GB-1502953-A (GB)
Title: Semiconductor device and a method of fabricating the same
IPC: H01S5/11
Filed: 1975-02-20
Abstract: 1502953 Semiconductor lasers HITACHI Ltd 20 Feb 1975 [4 March 1974] 7109/75 Headings H1C and H1K A heterostructure semiconductor laser comprises a semiconductor body 4, Fig. 3, of a Group III-V compound which does not include aluminium in its composition, a portion of one major body surface supporting a multilayer mesa which includes a laser active layer 1 and an adjacent layer 12 of a different and broader band gap material, the edges of the mesa parallel to the lasing axis being covered by a material 13 also of different composition and broader band gap than that of the active layer to provide transverse optical confinement. As shown, the body 4 is N-type GaAs on which is deposited by liquid phase epitaxy successive layers 11, 1 and 12 of N-type P-type or undoped GaAs, and P-type layers 11 and 12 providing optical confinement. The mesa is formed by selective etching, and the body is then coated on the surfaces adjacent the mesa with a layer 13 of undoped or N- type Ga 0À6 Al 0À4 As 0À98 P 0À02  or Ga 0À4 Al 0À6 As 0À97 P 0À03 . Layers 12 and 13 are then covered with an SiO 2  layer 15 which is selectively etched so as to expose at least a part of the surface of the P-type layer 12. Zinc is diffused into the layer 12 to form a P-type region 14. Conductive layers 7 and 8 are formed finally on opposite surfaces of the structure. Cleaved end faces 9, 10 of the structure form the laser resonator. A modification of Fig. 3 is described, Fig. 5 (not shown), in which a mesa comprising an N-type GaAlAs inner layer, a P-type GaAs active layer, and a P-type GaAlAs outer layer is disposed on an N-type GaAs body. A GaAlAs layer on the body abuts the sides of the mesa and a P-type region extends into a part of this layer and the outer layer. In a further modification, Fig. 6 (not shown), an N-type GaAs body supports a mesa consisting of a P-type GaAs active layer and an outer layer of Ga 0À7 Al 0À3 As, the latter material also being used for the layer on the body which abuts the mesa edges. A rectangular body 4 supporting a circular mesa and providing a light emitting diode is shown in Fig. 7, layer 22 consisting of N-type light emitting layer 23 consisting of N-type Ga 0À7 Al 0À3 As, and layer 25 convering both the mesa edges and the remaining adjacent surface of the body consisting of N-type Ga 0À5 Al 0À5 As. An insulating layer 26 has an aperture for the mesa and an overlying electrode 27 to make electrical contact.
Patent GB-1322887-A (GB)
Title: Tape cartridge player including a tape cartridge ejection mechanism
IPC: G11B15/675
Filed: 1972-02-16
Abstract: 1322887 Tape cartridge players MOTOROLA Inc 16 Feb 1972 [15 March 1971] 7229/72 Heading G5R A side-loading cartridge player includes a cartridge locking and ejecting mechanism 45, engageable for cartridge ejection by a mechanism 25 which comprises a member 70 movable in the direction of cassette ejection, linked to a member 75 manually movable in a generally perpendicular direction. The member 75, Fig. 5, includes an arm 23 which projects through the player front wall 15, and is linked to the member 70 through a rod 74 and a bell crank 80 pivoted at 81 to the front wall 15 and having a rivet 83 movable in a slot 84 of the member 75, so that when the arm 23 is depressed and the member 75 slides along vertical slots 77, 78 in the front wall 15, the bell crank 80 is pivoted and pulls the attached rod 74 in a substantially horizontal direction, Fig. 4 (not shown). The member 70 thus causes an arm 53 of the locking and ejecting mechanism 45 to pivot at 55, moving overcentre spring 57 to its other stable position (shown), and thereby disengaging a locking roller 61 from a cartridge notch 27a and ejecting the cartridge 27 by means of a slide 47. The head 38 is track-changed by a rotatable cam (not illustrated) when contacts (41), Fig. 2 (not shown) are bridged by a conductive strip on the tape. A cartridge-actuated switch (32) controls the drive (33-36) to a capstan (31).
Patent GB-253075-A (GB)
Title: Improvements in and relating to tractors and trailers and to means for facilitating coupling the same
IPC: B62D53/08
Filed: 1926-03-16
Abstract: 253,075. O'Donnell, E. D. June 2, 1925, [Convention date]. Rest-bars and supports or props.-The pivot of a trailer when disconnected from the tractor is supported by pivoted stilts or legs 51 which are connected with a yoke 59 adapted to occupy one of two pairs of notches 62. A hand-lever 70 is provided to unnotch the yoke. The yoke may also be actuated by means of a hand-wheel 82 and screw 80. The rear wheels of the trailer may be replaced by legs connected to the legs 51.
Patent GB-199098-A (GB)
Title: Improvements relating to locks or fastenings for attache and other cases
IPC: E05B65/50
Filed: 1922-03-13
Abstract: 199,098. Hill, W. J. March 13, 1922. Has p fastenings; fastenings for attachÚ- cases; hasp Locks; locking sliding latches. -The hasp of a fastening for attachÚ or other cases is secured against inadvertent release by a roller or ball which locks or frees the sliding bolt of the fastening by gravity according as to whether the case is in a vertical or horizontal position or vice versa. The spring-pressed sliding bolt 2 has a recess 5 into which a roller 1 sliding in the inclined channel 4 stamped up in the back-plate 3 is adapted to gravitate to secure the bolt when the case is in a vertical position.
Patent GB-508119-A (GB)
Title: An improved induction system for supercharged internal-combustion engines
IPC: F02B33/00
Filed: 1938-03-09
Abstract: 508,119. Charge forming devices ; induction pipes. ELLIOTT, A. G. March 9, 1938, No. 7396. [Classes 7 (ii) and 7 (iii)] Mixture is supplied to the intake orifice 20 of a centrifugal blower 11 by a plurality of separate mixture passages 19 and is delivered through a plurality of outlet passages 12, each serving a separate cylinder or group of cylinders. Guide vanes may be provided where'the passages 19 enter the eye of the blower and these passages may be arranged horizontally or vertically. In the 24 cylinder X-engine shown the blower is arranged at one end of the engine and each outlet passage 12 is divided by partition 31 and leads into a manifold 13 divided into-two parts 15, 16 by a partition 14, each part supplying three cylinders of a bank 10.
Patent GB-515248-A (GB)
Title: Improvements in and relating to automatic firearms
IPC: F41A17/66
Filed: 1938-03-09
Abstract: 515,248. Automatic firearms. BIRKIGT, M. March 9, 1938, No. 7405. Convention date, Feb. 17, [Class 92 (ii)] An automatic firearm, particularly for aircraft, having a breech-block 6 and a firing-pin carrier 7, the breech-block having a pivoted latch 13 which either locks the breechblock to the casing in the closed position or couples the breech-block to the firing-pin carrier when the breech is open, has inclined surfaces 20, 16, 14<11> on the latch which co-operate, respectively, with similar inclined surfaces 21 on a fixed part of the gun, e.g., the casing and 17, 19" on the firing-pin carrier. During the forward movement of the breechblock, the surface 19" on the firing-pin carrier tends to urge the latch to disengaged position, which disengagement occurs just before the breech-block reaches closed position, the disengagement being made positive by the contact of the surfaces 20, 21. A surface 18 on the carrier maintains the latch in locked position during initial movement of the carrier. The firing-pin 10, Fig. 3, is acted on by a return spring 5, and is coupled by a crossbar 9 to slides 7 constituting the firing-pin carrier, the bar 9 passing through elongated slots 12 in the breech-block 6. Springs r located within slots in the slides 7 bear against stops b on the breech-block and tend to maintain the firing-pin in forward position. The breechblock may be operated by blow-back action of the cartridge or by a gas piston 25.
Patent GB-836296-A (GB)
Title: Improvements in electrodes for electric arc welding and in methods of manufacturing the same
IPC: B23K35/02
Filed: 1958-03-07
Abstract: The core of a welding electrode may be formed of one of the following alloys in powder form:- .1.2.3.4 .C 0.1% max..C 5%.C 1.3%.C 3.2% .Mn 1.6%.Mn 63%.Mn 5.2%.Mn 1.4% .Si 3.6%.Si 7%.Si 7.2%.Si 30% .Cr 60%..Cr 3.8%.Cr 12% .Ni 27%..W 33.6%. ...Nb 6.4%. ...Co 8%. balance in all cases being iron
Patent GB-829560-A (GB)
Title: Improvements in valves for compressible fluids
Inventor: BLACKFORD RAYMOND HIGH
IPC: F04B39/10
Filed: 1956-03-09
Abstract: 829,560. Valves. DURABLE MANUFACTURING CO. March 9, 1956, No. 7492/56. Class 135. A valve for compressible fluids comprises a valve disc in the form of a rigid dished plate 22 reciprocable toward and away from a seat member 15 carried by a housing or body member 10, the valve disc having a central portion of substantially parabolic longitudinal cross-section and having a circular transverse crosssection at any point on the longitudinal axis of the disc. The edge portion 41 which co-operates with the inner edge 42 of the seat member is of conical formation. The valve disc is formed by applying hydraulic pressure to the upper face of a flat plate resting on a seat similar to the annular wall 21 of the seat member 15. The seat member 15 has an external flange 20 which is held against a shoulder 13 in the housing 10 by a guide member 25 having a central stop-member 27 and guideribs 26 fitting against a shoulder 18. The lower surface of the stop-member 27 is shaped to match the face 31 of the disc 22 and has a cavity 30 which acts as a buffer chamber. The valve disc is loaded by a spring 33 centred by a ' shoulder 34. The guide member 25 has outlet apertures 35 and is held in place by a split-ring 24. Four valves as described above are shown arranged in a circular housing for use as compressor intake valves.
Patent GB-347810-A (GB)
Title: Improvements in the manufacture of artificial fibres
IPC: D01F2/04
Filed: 1930-03-07
Abstract: Artificial fibres are produced by spinning a cuprammonium solution of cellulose into a precipitating bath consisting of a solution of a caustic alkali of concentration usual for mercerization (i.e. a solution of at least 15 DEG  B<\>ae.), cooled to a temperature substantially below 0 DEG  C., for example -5 DEG  C. According to a modification of the process, the above precipitating bath is used as the first or second bath in a two-stage process, the other bath comprising a dilute alkali solution.  Specification 271,517, [Class 2 (ii), Cellulose &c.], is referred to.
Patent GB-492044-A (GB)
Title: Sparking plugs
IPC: H01T13/46
Filed: 1937-03-15
Abstract: 492,044. Sparking - plugs. CORBITT, R. W. March 15, 1937, No. 7573. [Class 7 (iv)] Two separately insulated conductors A, connected to different sources of current, are mounted within and discharge to the same casing. They may be parallel. or inclined, may be conically seated, or may be supported by spacing washers C, C<3>. In a modification, Fig. 5, siamesed insulators E are used. An insulating sleeve F surrounds the outer end of the insulators E and is formed with cavities for receiving spring-pressed plungers secured to the current leads G<1>. An aluminium distance piece G with a single hole at the top and a pair in the lower surface guides the ends. Arcuate sparking terminals J<1> are formed on the casing and on a bridge-piece J.
Patent GB-164838-A (GB)
Title: Improvements in and connected with the cleansing of condensers and like heat interchanging apparatus
IPC: F28G9/00
Filed: 1920-03-15
Abstract: 164,838. Martin, F. G. March 15, 1920. Cleaning, fluid-pressure processes for.-Apparatus for removing scale, &c. from condensers and other heat-exchange apparatus comprises a tank 13 containing a cleansing fluid such as a diluteacid and connected by the pipe 16 with the suction side of a pump 12 which is in communication by way of pipes 14, 17 with the headers 7 of the condenser 1. Liquid is drawn from the tank 13 until the tubes and water spaces of the condenser are full and the liquid is subsequently circulated therein by the pump a three-way valve 15 being operated to cut off communication with the tank. The condenser is finally washed out with water circulated by the pump. The pipes 14, 17 terminate in rotatable distributing-arms 18, 19 by operating which the flow of the fluid can be made equal through all the tubes within their radius of operation.
Patent GB-673427-A (GB)
Title: A method for processing crude gases obtained on halogenating metallic ores
IPC: C22B34/12
Filed: 1950-03-27
Abstract: Gases obtained by chlorinating metal ores, especially titanium ores are treated to prevent dissociation of ferric chloride present into ferrous chloride during the stage of cooling the hot gases at say 800 DEG C. to a temperature above the point of precipitation of ferric chloride, e.g. 300 DEG C.  The treatment may consist in adding chlorine to the hot gases to provide a concentration thereof of 1 per cent by volume, or by rapidly cooling the gas by adding a cold gas, e.g. the spent gas from which the chlorides have been removed, or an inert liquid, e.g. titanium tetrachloride, or liquefied spent gas; the two treatments may be effected simultaneously, and for this purpose a cold gas containing chlorine, or a liquid, e.g. titanium tetrachloride, containing dissolved chlorine may be employed.