baber/WOPTO huggingface dataset:
Patent GB-1400562-A (GB)
Title: Growing crystals
IPC: C30B11/00
Filed: 1972-06-09
Abstract: 1400562 Growing crystals of SiC, Si and GaAs PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 9 June 1972 [12 June 1971] 27075/72 Heading C1A [Also in Division H1] Crystals, e.g. of SiC, silicon or GaAs are grown on a substrate by a method conducted in a gaseous atmosphere, in which the crystal material is deposited at a solid-liquid interface which is initially at the surface of the substrate, the liquid phase at this interface comprising a solution of the crystal material or its components in a foreign solvent, i.e. a solvent material other than the crystal material or any of its components, the crystal material or its components being supplied to the liquid phase during growth of the crystal, and during such growth, at least one fluent solid phase consisting of the crystal material or its components is present in at least the part of the gaseous atmosphere immediately adjacent the liquid, the fluent solid phase or phases being present at least in a number required by the phase rule so that the composition of the liquid phase is invariant at a given temperature and pressure. The solid material may be presented to the liquid phase in a highly reactive finely divided form. The mobility of the solid phase may be increased by a gas flow. If desired, the material to be crystallized or its components are presented exclusively as a fluent highly reactive finely divided solid to the liquid phase. Alternatively, the material to be crystallized or its components may be presented to the liquid phase in vapour form in addition to the solid phases required to induce the invariant composition of the liquid phase. In the examples, silicon carbide whiskers are formed on quartz plates which have been sprinkled with iron grains by filling a boat containing the coated plates with acetylene black and moving the boat through a hydrogen atmosphere at a temperature of 1250‹C.; silicon carbide whiskers are obtained by fluidizing finely divided carbon in a stream of hydrogen containing CH 3 SiCl 3 , whilst graphite plates provided with iron particles are positioned in the vessel at a temperature of 1250‹ C.; columnar silicon crystals are obtained by coating an alumina plate with dots of gold, placing the plate in a boat and covering with powdered amorphous silicon, and then heating the boat at 1000‹ C. in an argon atmosphere, and finally an epitaxial layer of gallium arsenide is obtained, by first forming a grating of silicon nitride on a substrate, placing the substrate in a boat where it is covered with Pt 2 As 3 , arranging the boat in a furnace zone at 1000‹ C. whilst vapours of Ga and arsenic are transported from a source thereof to form a liquid phase with the Pt present from which the desired epitaxial film crystallizes in the meshes of the grating.
Patent GB-339348-A (GB)
Title: A process for the preparation of cyclic non-saturated ketones with more than nine ring members
IPC: C07C45/48
Filed: 1929-09-06
Abstract: 339,348. Soc. Anon. M. Naef et Cie. Oct. 9, 1928, [Convention date]. Addition to 235,540. Cyclic unsaturated ketones having more than nine ring members are prepared by heat treatment of the metallic salt of an unsaturated dicarboxylic acid having at least eleven carbon atoms in a normal chain and the two carboxylic acid groups at the end of the chain. The salts employed are particularly those of uranyl or earth and rare earth metals, i.e. of metals of the aluminium and titanium groups including those having the atomic numbers 59-72. Examples are given of the preparation of cyclohexadecene- 8-one-1 from the yttrium salt of pentadecene-7- dicarboxylic acid-1: 15, and of cycloheptadecene- 9-one-1 (civetone) from the thorium salt of hexadecene-8-dicarboxylic acid-1 : 16. Specification 263,153 in referred to. Carboxylic acids; bromo compounds; hydrogenated organic compounds, catalytic production of; metallic salts of organic acids.-Unsaturated dicarboxylic acids, having at least eleven carbon atoms in a normal chain and the two carboxylic acid groups at the ends of the chain, are prepared as follows :-(1) those containing an uneven number of carbon atoms by heating ester acids with iron (where x = 4, 5, 6 &c), reducing the resulting keto acids-say by catalytic hydrogenation with hydrogen in the presence of platinum black-and finally heating with #-naphthalene sulphonic acid to split off water; (2) those containing an even number of carbon atoms by reducing aldehyde acids-e.g., by amalgams or by electrolytic reduction-to give dioxydicarboxylic acids which are then treated with hydrogen bromide at 120‹ C. and the resulting dibromo compounds boiled with zinc in alcoholic solution to yield the corresponding unsaturated dicarboxylic acids. The salts of the unsaturated dicarboxylic acids with metals of the aluminium and titanium groups, including those having the atomic numbers 59-72, are prepared bv interaction, in solution of an alkali salt of the dicarboxylic acid with a salt, e.g. the nitrate, of said metals.
Patent GB-1208227-A (GB)
Title: Process for producing purified l-asparaginase
IPC: C12N9/82
Filed: 1969-05-29
Abstract: 1,208,227. L-Asparaginase. KYOWA HAKKO KOGYO CO. Ltd. 29 May, 1969 [15 June, 1968], No. 27345/69. Heading C3H. In a process for purifying L-asparaginase obtained from the cultured cells of an L- asparaginase - producing micro - organism belonging to the genus Serratia, L-asparagine is added to the enzyme-containing aqueous solution recovered from said cells and the pH of the solution is adjusted to 4.0 or less. The organism may be S. marcescens; the pH may be adjusted with HC1.
Patent GB-238104-A (GB)
Title: Improvements in the manufacture of expanded-metal sheets
IPC: B21D31/04
Filed: 1924-11-15
Abstract: 238,104. Hewetson, H. F. Nov. 15, 1924. M a k i n g expandedmetal. - In making expanded - metal, the slitted sheets are delivered to the expanding mechanism from the slitting mechanism through a guide which turns the blank from one plane to another with sufficient freedom to prevent buckling. The sheet after being provided with series of staggered interrupted slits is fed in a horizontal plane by the slitting rollers C through a guide consisting of a curved turning plate 1 and a side wall 3. Guard plates 5 and 6 are provided at the entrance end of the guide so as to warp and dish the sheet transversely and loosen up the strands formed by the slits. The sheet travels along the guide with one edge in the groove 4, the rest of the sheet being free to follow the curvature of the plate 1. The sheet passes in a vertical plane under a guide roller 7 to the expanding mechanism which may consist of stepped discs d and shouldered dies e as described in Specification 228,062, which expand the metal so that it is delivered in a horizontal plane.
Patent GB-1391504-A (GB)
Title: Phase shift apparatus
IPC: H02H3/38
Filed: 1972-06-13
Abstract: 1391504 Phase shift networks BBC BROWN BOVERI & CO Ltd 13 June 1972 [15 June 1971] 27553/72 Heading H3U Input signals U 1 , U 2  are supplied to respective phase shifting circuits R 1 , C 1 <SP>1</SP>, C 1 <SP>11</SP> and C 2 , R 2 <SP>1</SP>, R 2 <SP>11</SP> which are tapped to provide output voltages U 1 <SP>1</SP>, Y 2 <SP>1</SP> in quadrature, the phase shift being frequency independent. The common output terminal M is connected to the tappings on each of dividers comprising resistors T 11 , T 12 ; T 21 , T 22  or respective tapped transformers also receiving the respective inputs U 1 , U 2 . The ratio of resistance to reactance in each phase shifting circuit may be varied as may be the ratios C 1 <SP>1</SP>/C 1 <SP>11</SP> and/or R 2 <SP>1</SP>/R 2 <SP>11</SP>. The dividers may, as shown, split the input voltages into equal halves, or other division ratios may be provided provided conjoint variation of the above resistance to reactance ratio takes place. Inductors may be used instead of capacitors in the phase shifting circuits. Signals U 1 , U 2  may be voltages either in phase, or two voltages of a three phase system, or currents if suitable input resistors are provided. Operation is discussed algebraically utilizing the phase or diagram of Fig. 2 (not shown).
Patent GB-879046-A (GB)
Title: Improvements in or relating to devices forming the mouthpieces of air admission pipes for jet propulsion engines for aircraft
IPC: F02C7/042
Filed: 1959-08-12
Abstract: 879,046. Jet-propulsion plant. SOYER, R. Aug. 12, 1959, No. 27608/59. Class 110 (3). A mouthpiece for an air admission pipe for a jet-propulsion engine comprises an inflatable element secured near the free end of the air admission pipe to the exterior thereof and formed with at least one cell secured to the exterior wall forming a streamlined mouthpiece and in its inflated condition having a large radius of curvature at the front but without modifying the internal section of the air admission pipe when non-inflated. An air intake for a jet-propulsion engine comprises an air admission pipe 2 surrounded by an annular space 4 containing two inflatable elements 5, 6 of fluid-proof inextensible fabric, each having a substantially toroidal form in the inflated position, Fig. 2. The element 5 bears against a beading 7 formed in the wall of the annular space 4 and one or more anchoring points constituted by end pieces 8 of a manifold 9. The element 6 is held by two braces one 10 of which is secured to the outer face of the inner wall of the pipe 2 and the other 11 to the outer wall of the pipe 2 at 18. The elements 5, 6 are connected by flexible tubes 12 and have a common flat portion 19 between them. The elements are enclosed by an elastic envelope 15 connected to the admission pipe 2 at 16, 17. In the deflated position, Fig. 1, the intake is suitable for high-speed flight. The inflated position, Fig. 2, is for take-off and lowspeed flight. The elements 5, 6 may be inflated by connecting them to the high-pressure side of the turbine of the engine and deflated by connecting them to the exhaust side of the mixture or to atmosphere. To avoid wear on the envelope 15, a series of rollers 20 are provided. The application of the invention to a ventral admission pipe is also described.
Patent GB-416709-A (GB)
Title: Improvements in or relating to apparatus for playing bagatelle and like games
IPC: G07F17/38
Filed: 1934-02-02
Abstract: 416,709. Table games. CUTLER, E. N., 4, Park Hill Rise, Croydon. Feb. 2, 1934, No. 27682/33. [Class 132 (ii).] In a coin-freed bagatelle or like game apparatus, the playing board is housed in a glasstopped casing and adapted to be tilted by means located at one end of the board adjacent the coin-freed mechanism, the ball or equivalent projector being preferably also located at this end. The inclined board 12 is pivoted to the casing 10 having a glass top 11, by pins 14, 16, and may be rocked within the limits imposed by stops 49, Fig. 3, by operating a handle 18, a tension spring 50 connected to a bar 51 rigid with the board 12 normally maintaining the latter in the position shown. Balls are projected by a spring plunger 46 along a runway 22 rigid with the casing and pass at 25 on to the board 12 which has upstanding edges 19. Slidably mounted beneath the board 12 is a plate 26 apertured at 30 which retains the balls when played into the apertures 29. To release the balls for further play, a coin is inserted at 33 permitting inward movement of a member 34 which engages a depending arm 31 of plate 26 to move the latter against the bias of a spring 28 until the holes 30 register with the holes 29 to let the balls through to a tray 35, fixed to the casing, which leads them to a portion 36 thereof. The balls are then raised one by one to the runway 22 by pushing in the plunger 46, a collar 51, Fig. 4, thereon, rocking an arm 40 about a pivot 41, a receptacle 43 on the arm coacting with an arcuate shield 45 to convey a ball from 36 to the runway. In a modification, the pivotal axis 58, Fig. 5, of the board 12 is variable, being movable between the limits 58a 58<b>. Again the board 12 may be mounted on links 62, 63, Fig. 7, tilting of the board being accompanied by lateral displacement thereof, or the board could be suspended by links. The tilting may be effected through cams, crankshafts &c., or through gearing, or other mechanism, to produce irregular unexpected motion of the board. The playing pieces may be rollers, balls (uniform or biassed), miniature horses, cars or other models, the board in some cases being arranged horizontally and adapted to tilt in any direction.
Patent GB-1081343-A (GB)
Title: Improvements in or relating to the formation of a metal layer on an electrically non-conducting support
Inventor: GALLACHER JAMES ALLAN
IPC: C23C18/24
Filed: 1965-06-30
Abstract: The surface of an electrically non-conducting support e.g plastic, glass fibre or laminated paper is treated, prior to depositing a metal layer, with a solution of CrO3 in H3PO4 and H2SO4, thereby roughening said surface at least to the extent of deglazing it.  The support may be an acrylonitrile-butadiene-styrene copolymer and after the deglazing treatment may be immersed in an aqueous seeding bath containing SnCl2, HCl and wetting agent, and then in an activating bath containing aqueous PdCl2 and HCl and finally in a copper plating bath containing CuSO4, sodium potassium tartrate, NaOH and formaldehyde in water.
Patent GB-155433-A (GB)
Title: Improvements in apparatus for the manufacture of articles of glass from glass tubing
IPC: C03B23/09
Filed: 1919-11-10
Abstract: 155,433. Whatmough, W. A. Nov. 10, 1919. Forming vials.-Relates to a modification of the apparatus described in Specification 131,532, which adapts it for the manufacture of roundbottomed vials from tubular blanks. The end stops G, H are fitted with nozzles G<1>, H<1> which direct jets of air into the open ends of the blanks and so set up pressure inside which blows out the closed ends to the required form.
Patent GB-845229-A (GB)
Title: A marking arrangement for a recording machine
IPC: G11B27/34
Filed: 1957-09-03
Abstract: 845,229. Dictating-machines. DICTAPHONE CORPORATION. Sept. 3, 1957 [Sept. 4, 1956], No. 27789/57. Class 40 (2). A marker for a dictating-machine comprises a slip of heat-sensitive material and an electricallyheated marking-device. Fig. 1 shows a dictating-machine in which an endless belt record 12 moves under a recording-head 16 which traverses the belt in the direction of the arrow 18. Attached to the recording-head carriage is an arm 30 carrying a pivoted housing 26 which is spring-urged towards the top heat-sensitive slip 22 of a pad 21. Within the housing is a block 32 (Fig. 3) which has two heater wires 40 and 42 which can be heated selectively by pressing one end or the other of the switch 24 (Fig. 1) and thus marking the slip 22 in one of two positions. Each heater wire is connected across a capacitor which is itself in series with a resistor across a source of D.C. current supply. When the switch is closed to energize a heater the capacitor discharges through the heater wire and the value of the series resistor is such that the current permitted to flow thereafter is insufficient to produce significant heating of the wire. The marks on the slip are therefore of uniform intensity. The housing 26 may be raised to permit withdrawal of the slip. In a modification a single heater wire is used with two different values of capacitor to produce a single mark of variable intensity.
Patent GB-1011183-A (GB)
Title: Fastener device for securing a member to an apertured support
IPC: F16B5/06
Filed: 1963-07-12
Abstract: 1,011,183. Stud and socket fastenings. A. RAYMOND. July 12, 1963 [Dec. 13, 1962], No. 27793/63. Heading E2B. A fastener device 1 for securing a member 10 to one apertured support 8, comprises, a head having a shank 3, the end of the shank remote from the head having a laterally projecting means for engagement in an aperture 7 in the support 8 or a member 6 to be assembled in the aperture, the portion of the shank 3 between the head and the projecting means having a cross section of a segment of a circle, the flat face of the segment being disposed nearer to a line extending longitudinally of the shank and normal to and coincident with the centre of the head than the outer surface of the curved face of the segment. As shown, the fastener is assembled with the member 10 by a tilting motion to bring the flange 2 beneath a covering 10a and to overlie an aperture 9, and a nose 4 at the free end of the shank 3 is then engaged with the apertured support 8, or as shown in Fig. 4, with the member 6 assembled with the support 8. In another construction Fig. 6 (not shown), the nose of the shank is frusto-conical and the lower end of the shank is provided with a radial flange for resilient engagement with the support. In a similar arrangement, Fig. 7 (not shown), the nose is formed with an axial split or recess. In the construction according to Fig. 11, the shank 3 and nose 4 are hollow, the shank having a cut away portion 14 and a flange 15 and the nose having a transversely extending web 16. In a similar arrangement, Figs. 13 to 16 (not shown), the web 16 is omitted and the inner wall of the nose is formed with longitudinally extending grooves. In all arrangements, the device is preferably formed as a one piece moulding of resilient plastics material.
Patent GB-494290-A (GB)
Title: Improvements relating to luminescent screens
IPC: C09K11/02
Filed: 1937-04-20
Abstract: 494,290. Protecting luminescent screens. BRITISH THOMSON-HOUSTON CO., Ltd., SCOTT, W. J., and ANDERSON, J. T. April 20, 1937, No. 27814/38. Divided out of 494,105. [Class 98 (i)] A luminescent screen, more particularly for use in electric discharge tubes, is protected by applying to the luminescent material before or after the cementing process, a coating of a colloidal suspension of silica in a vaporizable medium and heating to drive off the medium. The luminescent substance is first cemented to a glass or other surface by means of potassium silicate, glycerine, boric acid or other known means and the colloidal silica is applied by spraying, brushing wiping or pouring and draining. The surface is then heated fairly rapidly to 300‹ C. to set the coating. Alternatively the luminescent material is first coated with colloidal silica, heated, and then secured to the surface by known means.
Patent GB-1335602-A (GB)
Title: Stabilisers for polyolefines
IPC: C08L23/00
Filed: 1971-06-14
Abstract: 1335602 Stabilizers for polyolefins CIBAGEIGY AG 14 June 1971 [17 June 1970 2 Oct 1970] 27846/71 Heading C3P [Also in Division C2] A stabilizing agent for a polyolefine comprises a triazine derivative having the general formula wherein R 1  is hydrogen, (C 1 -C 18 ) alkyl or alkoxy, unsubstituted or alkyl-, alkoxy-, halo- and/or hydroxy-substituted phenyl, a group of the formula or the group with R 2  and R 3  being hydrogen, (C 1 -C 18 ) alkyl, cyclohexyl, benzyl, unsubstituted or (C 1 -C 18 ) mono- or di-alkyl substituted phenyl, or, together with the nitrogen atom, denoting a 5- to 7-membered heterocyclic ring; the rings A being unsubstituted or (C 1 -C 18 ) mono- or dialkyl-, alkoxy-, or chloro-substituted. Examples describe the stabilization of polypropylene and high pressure polyethylene granules. The triazine derivative is added to the polyolefine in an amount of from 0À01 to 5% by weight based on the weight of the polyolefine. In the examples conventional anti-oxidants and copper powder or copper stearate are also added.
Patent GB-1443830-A (GB)
Title: Netting
IPC: D04H3/10
Filed: 1973-06-12
Abstract: 1443830 Netting BRIDPORT-GUNDRY (HOLDINGS) Ltd 12 June 1974 [12 June 1973] 27877/73 Heading D1K A net is made from a plurality of strands by threading the body of each of two intersecting strand portions 1, 2 through a hole in the other at intersections 3. Each strand may be a woven or other strap, a twisted or hawser-laid cord or, preferably, a braided or plaited nylon cord, and the holes may be preformed in the strands or, preferably, formed during the net making process by a marline spike. The strand portions may be joined to a border cord 4 as at intersection 5 in a manner similar to the intersections 3 or they may be merely looped therearound as at 7. The net of the invention, which may have a cruciform shape for anchoring loads on pallets, has a greater breaking strength in the direction of arrow A than in that of arow B.
Patent GB-173837-A (GB)
Title: Improvements in and relating to water tube boilers provided with steam superheaters
IPC: F22G7/14
Filed: 1920-10-01
Abstract: 173,837. Dornan, J., and Portham, R. S. Oct. 1, 1920. U-tube superheaters; dampers for controlling superheaters.-A superheater for a Babcock and Wilcox or like boiler is mounted in a space so partitioned off from the boiler tube space that the flow of gases through the superheating space is in parallel with the flow through the boiler tube space, and means are provided for controlling the flow through the superheating space independently. The superheating elements 8 connected to front headers are inserted between a side boiler wall and a vertical partition 7 shutting off the boiler tube space. Baffles are so fitted at the bottom and top of the superheating space as to cause the gases to flow over and along the elements. A damper 14 controls the admission of gases to the superheating space. A second damper may be fitted to control the outlet.
Patent GB-238428-A (GB)
Title: Improvements in or relating to the decomposing of crude borate of lime (boronatrocalcite) and the production therefrom of concentrated boric acids
IPC: C01B35/10
Filed: 1924-11-22
Abstract: Boric acid is produced from crude borate of lime (boronatrocalcite) by pulping the latter with water, heating it to boiling point and admitting hot sulphur dioxide which liberates boric acid and also assists in the heating.  Sand, lime and gypsum are separated by vacuum filtration, and the filtrate is cooled rapidly to crystallize the boric acid, which is dried preferably in a vacuum drying-apparatus operating at a high vacuum.
Patent GB-806587-A (GB)
Title: Syrup-separating device for sugar centrifuges
IPC: B04B7/04
Filed: 1957-09-05
Abstract: 806,587. Centrifugal strainer separators. MASCHINENFABRIK BUCKAU R. WOLF, A.G. Sept. 5, 1957 [Sept. 7, 1956], No. 28056/57. Class 46. In order to separate two kinds of liquid, or one liquid into two portions of differing purity (e.g. sugar syrups), two channels 7, 6, Fig. 1, one within the other, are provided, together with a series of overlapping catching walls 5 each pivoted at 4, 4a to a housing 1a. In a first stage of operation the catching walls 5 are turned inwards, Fig. 3, (right hand side,) so that dropping plates 5a (one at the foot of each catching wall), divert the liquid, expelled from a drum 3 and flowing down the walls, into the channel 6, Fig. 1, (left hand side). In a second stage of operation a ring 10, Fig. 3, having radial slots 11 engaging pins 12 on the catching walls is moved in direction a, Fig. 3, to turn the catching walls outwards, Fig. 3, (left hand side,) Fig. 1, (right hand side) whereupon the liquid runs down the walls 5 into the channel 7. The slots 11 may have a V or arcuate shape.