baber/WOPTO huggingface dataset:
Patent GB-620751-A (GB)
Title: Apparatus for generating foam for fire extinction
IPC: B01F5/04
Filed: 1945-11-16
Abstract: 620,751. Making foam. SAVAL APPARATENFABRIEK C. V. Nov. 16, 1945, No. 30774. Convention date, May 12, 1942. [Class 47 (ii)] Air foam is made in two stages by the admixture of water, foam former and air by a first injector, the foam formed, together with additional air, being induced into and forced along a discharge pipe by a second water jet. As shown, water under pressure from a pipe 9 is discharged as an annular jet between the pipes 1, 2, drawing in foam formed through the pipe 2 and air through the apertures 3. The foam formed passes into the passage 6, which includes baffles or mixing devices, and is drawn into a chamber 7 and forced through the discharge pipe 10 by a further water jet acting through the nozzle 8 and drawing in additional air through the apertures 8<SP>1</SP>. In a modification, a second foam-forming nozzle 1, 2, 3 is provided at the opposite side of the chamber 7, the product of both nozzles being drawn in by the nozzle 8. In three other modifications, the pipe 10 is a continuation 'of the passage 6. In one, the nozzle 8 is concentric with the passage 6 and constitutes a baffle or refiner for the primary foam. In another, the nozzle 8 has two outlets, one discharging into the inner of two nested, cup-shaped members concentric in the passage 6 to draw in the primary foam and the additional air and the second discharging towards the pipe 10 to propel the foam and induce a third air supply. In the third, a concentric extension from the nozzle 1, 2 discharges the second water jet into an oval body arranged in the passage 6 to act as a baffle and contoured internally to act as the nozzle 8. The Specification as open to inspection under Sect. 91 describes also an apparatus combining the features of the first and last constructions described above. This subject-matter does not appear in the Specification as accepted.
Patent GB-1425965-A (GB)
Title: Method of treating monocrystalline wafers
IPC: C23C16/44
Filed: 1973-06-28
Abstract: 1425965 Semi-conductor device manufacture PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 28 June 1973 [1 July 1972] 30813/73 Heading H1K [Also in Division H5] In a process involving heating monocrystalline wafers, the wafers are placed flat on the plane surface of a susceptor which is H.F. heated, the under surface of the susceptor being provided with recesses similar in shape to the overlying wafers, and of depth greater than twice the thickness of the wafers, which are centred over respective recesses. This arrangement is said to ensure an increased temperature of the susceptor surface at areas contiguous to the wafer peripheries and so to compensate for the greater heat loss of such parts of the wafer; thus warping and slip are reduced. As shown, the susceptor 12 has circular recesses 18, above which are located wafers 14; the recesses and wafers could instead be rectangular. Graphite, optionally coated with silicon carbide, may constitute the susceptor. Thinner portions 15 of the susceptor are preferably between <SP>1</SP>/ 3  and <SP>2</SP>/ 3  the thickness of thicker portions 19, and preferably are between one and four times the penetration depth of the H.F. radiation, whereas the thicker portions should be at least twice the penetration depth. The diameter of circular recesses should be not greater than, but at least one-half of, that of the wafers. The recesses may be tapered. The process involved may be the epitaxial deposition of Si from SiCl 3 /H 2  on to a Si wafer; or it could be the provision on a Si wafer of a layer of silicon oxide, silicon nitride, aluminium oxide, or of borosilicate or phosphosilicate glass; or the deposition of one semi-conductor on to another or on to a substrate of sapphire or spinel; or the deposition of a monocrystalline magnetic bubble layer on to a non-ferromagnetic monocrystalline substrate.
Patent GB-396256-A (GB)
Title: Process of and apparatus for the production of bleaching powder
IPC: C01B11/06
Filed: 1932-11-02
Abstract: Bleaching-powder of low water-content is obtained in an intermittent process by the action of chlorine on lime by first chlorinating under such conditions that no substantial quantity of water is removed and until a moderate chlorine concentration at which the "wet point" is not reached is attained, and then, chlorination being continued, gradually removing water in such measure that the granular character is preserved without impairing the capacity for absorbing chlorine. In the first stage, the temperature is maintained below 40 DEG  C., preferably between 25-35 DEG  C.  In examples, the chlorine concentration of the product of this stage varies from 23-32 per cent.  In the second stage, water is removed by the use of a temperature above 45 DEG  C., and preferably between 50 - 55 DEG  C., with or without reduced pressure.  As an alternative to reduced pressure, the water may be carried off by air employed to dilute the chlorine, or if concentrated chlorine is used, a special current of air may be passed through the apparatus.  The dilute chlorine or air may be preheated to 35 DEG  C.  Near the end of the chlorination, the air current is decreased or shut off.  When the product contains at least 36 per cent chlorine, it is completely dehydrated as by treatment with air at 45-55 DEG  C.  In a modification in which a pulverulent product is obtained, a continuous removal of a moderate amount of water in the first stage may be effected under a reduced pressure decreasing from 90-40 mms. mercury, a pressure of 30-50 mms. being maintained in the second stage.  A suitable apparatus consists of a water-jacketed iron drum, provided with an axially mounted shaft carrying paddles, the ends of which are provided with spring-pressed scrapers.  Chlorine inlets are distributed over the upper side of the shell.
Patent GB-1198721-A (GB)
Title: Sheet Handling Apparatus.
IPC: G06K13/073
Filed: 1967-07-05
Abstract: 1,198,721. Feeding and delivering sheets. SPERRY RAND CORP. 5 July, 1967 [4 Aug., 1966], No. 30896/67. Heading B8R. General.-A sheet handling apparatus 12, Fig. 1, comprises a magazine 14 supporting a stack of sheets 15, an air-blast separator head 19 adapted to feed the sheets singly into a passageway 44 where they are supported on an air cushion supplied through apertures 88, Fig. 7, and moved forward by air blast from angled apertures 86, a reading station 22 where information is read from the sheets and an air-gate 30 which is controllable to direct the sheets to either of two stacking magazines 28, 36. Pile tables and supports.-The stack 15 is supported on a pusher plate 17 which is raised at a constant rate by a shaft 18 connected to a motor through aperture 20. The stacking magazines 28 and 36 are of similar construction to that of magazine 14 to permit full stacking magazines to be placed at the separating station 11 to enable sheets to be again fed through the apparatus. Separators.-Stack 15 is tilted towards passageway 44 so that a sheet raised from the stack by air blast from head 19, Fig. 6, will tend to pass under gravity into the passageway. Separation is assisted by air blast, from apertures 100 in a collar 16 surrounding the top of the stack, which riffles the uppermost sheets. A pin 45 may be moved to stop a card leaving the magazine. Sheet carriers and forwarders: registering- A separated sheet 41, Fig. 7, supported on an air cushion and pushed forward by air jets is aligned at reading station 22 against turbines 55. At station 22, Fig. 8, instead of air being withdrawn through apertures 90 in both sides of the passageway 44 (as is the case in the remainder of the passageway) air is withdrawn only through one side 49 thus causing a sheet to be pulled against turbine wheels 55 (driven by the air flow) and aligned for reading. Delivering sheets.-On leaving station 22 a sheet reaches passage 93, Fig. 13, through which an air blast may be admitted under the control of valve 67. According to information read from a sheet the valve 67 is controlled to allow a sheet to pass into curved guide 35 (no air blast from passage 93) or directed to a further curved guide 37 (with air blast from passage 93). A sheet directed to either guide is carried therearound by air blast and deposited in an inverted condition in one of the stacking magazines. Each guide terminates in a sheet decelerator 26, 34, Fig. 15, where a sheet 41 is detected by a device 81 sensitive to the air flow from passage 83 and slowed by suction air through passage 87. A full magazine 28 or 36 may be removed from the stacking location, inverted and placed at the feeding location.
Patent GB-337569-A (GB)
Title: Improvements in and relating to valves
IPC: F16K31/46
Filed: 1929-10-11
Abstract: 337,569. Bowden Wire, Ltd., and Nisbet, A. H. Oct. 11, 1929. Diaphragm valves; looseball valves ; actuating-mechanism. - A Bowden-wire or like controlled valve comprises a flexible diaphragm 9 bearing against or connected to a valve member, as 5, and means, such as the double leaf spring 11, 12, actuated by the Bowden or like control for positively holding the valve closed by external pressure, the valve being opened on release of the said external pressure, as, for example, by the action of a spring 7. The Bowden or like control may operate the valve. through a lever arrangement, and the lever may have a floating fulcrum. The diaphragm 9 may operate in conjunction with a ball-shaped valve member. The valve casing is formed with a lug 17 acting as the abutment for the shouldered opening 18 associated with the outer Bowden-member 16. For use with petrol, the packing disc 19 in the valve member 5 is made of cork.
Patent GB-877360-A (GB)
Title: Method of extractive distillation of an organic ester-alcohol system using water as the extractive agent
Inventor: OKUMA KENSUKE
IPC: B01D3/40
Filed: 1959-09-10
Abstract: <PICT:0877360/III/1> An ester-alcohol mixture is separated into its components by extractive distillation in a system wherein water is supplied as the extractive agent to the top of a distillation column at a temperature below that of the top of the column, suitably at atmospheric temperature, and no reflux condenser is provided.  As shown, an ester-alcohol mixture is fed by pipe 3 to a distillation column 1, to the top of which water is fed by a pipe 4.  The bottom 2 of the column is heated and the bottom liquid, including the alcoholic component of the mixture is discharged through a pipe 7. The ester vapour passes to a non-reflux condenser 5 and condensate is withdrawn through a pipe 6.  Examples are given of the treatment of a mixture of vinyl acetate and methanol and of a mixture of methyl acetate and methanol.  Other mixtures which may be treated are ethyl formate and methanol, ethyl acetate and methanol, n-propyl formate and ethanol, ethyl acetate and ethanol, and methyl propionate and ethanol.
Patent GB-774718-A (GB)
Title: Improvements in or relating to machines for distributing tar and other viscous liquids on roads and like surfaces
Inventor: COLEMAN THOMAS WILLIAM
IPC: E01C19/17
Filed: 1954-10-27
Abstract: 774,718. Tar sprayers. COLEMAN & SONS, Ltd., T. Oct. 27, 1955 [Oct. 27, 1954], No. 30959/54. Class 107.  A tar spraying machine of the type in which the tar is sprayed on to parallel beaters revolving about a horizontal axis, (which beaters spread the tar) has a heated tank for the tar, a transverse spray bar fed at one end with the tar by a pump of a capacity greater than the discharge through the nozzles and arranged so that the surplus tar flows from the other end back to the tank, thus maintaining a constant spraying head. The spaced nozzles are separately controlled by means that can be linked for simultaneous control of any number. The tar tank 12 (oval in cross sections, the major axis being horizontal) is supported on a road frame which also carries the beaters 35 rotating about the axis 37 and arranged in a fixed hood 38, tar being supplied from the tank to a distributer bar 25 having spray nozzles 27. The bar is pivotable about the axis 40 by a handle 42 and the individual nozzles are controlled by levers 31 which may be pivoted into slots on a transversely movable bar 32 for common operation. A pump driven by a motor 23 delivers tar to the nozzles through a flexible hose 24 and a similar hose, (not shown), returns the excess. Oil burners 13 are mounted one each side of the central vertical plane of the tank and are supplied with fuel fr6m a tank 14 and pressure air from a blower.
Patent GB-1081697-A (GB)
Title: Catalysts for olefin polymerisation
IPC: C08F4/68
Filed: 1964-08-04
Abstract: Olefines are polymerized using a catalyst comprising the interaction product of a vanadium salt, an organo-metallic compound RMgX, LiAlR4, or RAAlXB, where R is hydrocarbon, X is halogen, A is 1, 2 or 3, B is 0,1 or 2 and A + B = 3, and an activator which may be an organic nitrate, nitrite or azoxy compound; polyvalent iodine compound; oil-soluble organic compound of polyvalent metal; organic disulphide; nitroso compound; a quinone; sulphur.  Examples refer to polymerization of (1)-(15), ethylene + propylene; (16), ethylene + propylene + dicyclopentadiene.  Other olefines mentioned are: methyl cyclopentadiene dimer; 1,4-hexadiene; 11-ethyl-1,11-tridecadiene; 1,9-octadecadiene; 1,5-cyclooctadiene. Terpolymers may contain 1 to 25% diene, 30 to 80% propylene, the remainder being ethylene.ALSO:A polymerisation catalyst is prepared by mixing a vanadium compound, an organometallic compound having the formula RMgX, LiAlR4 or RaAlXb, where R is hydrocarbon, X is halogen, A is 1, 2 or 3, B is 0, 1 or 2 and A + B = 3, and an activator which is an organic nitrate, nitrite or azoxy compound; a polyvalent iodine compound; an oil-soluble organic compound of a polyvalent metal; an organic disulfide; a nitroso compound; a quinone or sulphur. The molar amount of activator does not exceed the molar amount of organometallic compound.  The vanadium compound may be a halide, oxyhalide, alkoxide, acetylacetonate, alkyl vanadate or alkyl halovanadate.  Examples relate to Et3 Al2 Cl3 + VOCl3 + (1), isoamyl nitrate; (2), isoamyl nitrite; (3) azoxybenzene; (4), iodosobenzene diacetate: (5), ferric acetyl acetonate (6), n-butyl disulphide; (7), p-dimethylamino nitrosobenzene; (8), N-nitroso diphenylamine; (9), tetrachlorobenzoquinone; (10), acenaphthenequinone, (11), beta-methylanthraquinone; (12), 2, 3-dichloro- 1, 4-naphthaquinone; (14), triisobutyl aluminium + VOCl3 + beta-methylanthraquinone; (15), Et3 Al2Cl3 + VOCl3 + sulphur.
Patent GB-1339703-A (GB)
Title: Micro-image display apparatus
IPC: G03B21/11
Filed: 1972-07-03
Abstract: 1339703 Optical projection apparatus NATIONAL CASH REGISTER CO 3 July 1972 [21 July 1971] 30964/72 Heading G2A In an optical projection apparatus, e.g. a micro-image projector includes a transparency holder 45 having a transparent cover 47, and which is movable to/from beneath projection lens 30, and the cover 47 has an extension 70 which is engageable with a movable finger 81 so that when the holder 15 is withdrawn, from the position shown beneath the lens 30, the cover 47 is lifted to permit changing of the transparency 49. As shown the arm 81 pivots on pin 80 and is urged anti-clockwise by a spring (whose ends 84, 85 are visible in Fig.3). The upward movement of cover 47 is limited by the abuttal of a portion of extension 70 on the beam 63. Further the anti-clockwise movement of the arm 81 is limited by a side of the inverted channel 76. Movement of the holder 45 is controlled manually by a handle 48 on extension 50. The holder 45 moves from left to right as viewed along and between two rails (only 64 visible) which one, in turn, mounted for movement in a mutually perpendicular direction for example by means of a bearing on a rod (65), Fig. 4 (not shown).
Patent GB-780016-A (GB)
Title: A mechanical current converter (contact rectifier) with commutating reactors
IPC: H02M1/26
Filed: 1954-10-27
Abstract: 780,016. Converting. LICENTIA PATENT VERWALTUNGS GES. Oct. 27, 1954 [Nov. 3 1953], No. 31001/54. Class 38 (2). Each switching choke 11 of a mechanical contact converter has another saturable choke 12 connected in series for full voltage operation, the connection being altered when the converter is operating with reduced volts. This alteration may be the short-circuiting of the other choke 12 by a switch 13, or by connecting the two chokes in parallel. The two chokes may be similar. The secondary windings 1 of the supply transformer may be completely separate and may be reconnected at the same time, e.g. by altering the connections from a to b<SP>1</SP>, the two alterations being made by a single switching- operation if choke 12 is connected appropriately. Alternatively the transformer secondary windings may consist of parts whose connections are re-arranged.
Patent GB-939199-A (GB)
Title: Improvements in water heaters
Inventor: MAGRO PIERO DEL
IPC: F24H9/12
Filed: 1961-08-29
Abstract: 939,199. Mounting immersion heaters. FRATELLI DEL MAGRO S.p.A. Aug. 29, 1961, No. 31026/61. Class 39 (3). [Also in Group XIII] An electric water heater comprises a chamber 1 through which pipes 7, 8 extend and communicate with the chamber through apertures 10, 11. Admission of cold water through the pipe 8 and aperture 11 causes hot water from the chamber to be discharged through aperture 10 and pipe 7. The immersion heater 3 is inserted into the chamber 1 through an aperture 2 normally closed by a plate 4 on to which the heater element 3 is mounted. The chamber 1 is sealed by a plug 5 which may incorporate a safety relief valve.
Patent GB-970961-A (GB)
Title: Improvements in or relating to the production of 1,2-dichloroethane
Inventor: CAPP CLIFFORD WILLIAM
IPC: B01J23/34
Filed: 1962-08-14
Abstract: 1,2-Dichloroethane is prepared by subjecting ethane catalytic oxidative dehydrogenation in the vapour phase at elevated temperature to produce a reaction product containing ethylene and subsequently chlorinating the reaction product by contact with hydrogen chloride and molecular oxygen in the vapour phase at an elevated temperature in the presence of a copper containing catalyst. The catalyst for the oxidative dehydrogenation stage is preferably vanadium pentoxide or a vanadate of tin, cobalt, chromium, manganese, uranium, tungsten, lead, bismuth or zinc. The copper containing catalyst preferably comprises copper deposited on a support material and may also contain alkali or alkaline earth metals together with iron, rare earth, zirconium or thorium metals.  The hydrogen chloride fed to the chlorination reaction may be diluted and/or partially replaced by chlorine and may be derived in part from waste hydrogen chloride produced in the pyrolysis of 1,2-di-chloroethane to vinyl chloride. An example is given.
Patent GB-772760-A (GB)
Title: Improvements in or relating to dies for cutting screw threads on tubes or the like
Inventor: CARRINGTON TOM
IPC: B23G5/00
Filed: 1954-10-28
Abstract: 772,760. Screw - cutting. CARRINGTON & CO., Ltd., T. Out. 28, 1954, No. 31094/54. Class 83 (3). A die-block 1 comprises a cutting-edge 2 for cutting a taper on a workpiece, and a cutting-edge 4 for threading the tapered portion, the edges being separated by a groove b.
Patent GB-851640-A (GB)
Title: Improvements in conveyor
IPC: B65G17/02
Filed: 1958-09-30
Abstract: 851,640. Endless-belt conveyers. UNITED STATES RUBBER CO. Sept. 30, 1958 [Nov. 4, 1957], No. 31136/58. Class 78 (1). An endless-belt conveyer 22, Fig. 4, is supported and driven by peripheral contact with a moving endless track formed of interconnected fluid-distensible rollers 15. The return run of the belt and roller system may be supported at intervals by light metal frames 27 which can ride on the chains 17, Fig. 1, connecting the rollers or on wheels 28 fixed to the axles of the rollers. These frames are interconnected by a light wire cable 34 which is anchored to the end support 18. The material is discharged by a plough 37 mounted on a frame 38, Fig. 5, which rides on the wheels 28. The plough is secured to a cross-bar 39 which is adjustable vertically by means 40 including shock-absorbing springs 41. The plough also is anchored to the support 18 by wire cables 42. The end support 19 is mounted in a movable frame 49 which slides on shafts 50, Fig. 2a. These shafts are supported on trunnions 51 in a stationary frame 52. The frame 49 is connected by a cable 56 to a weight 53 which maintains the system at the correct tension. Each roller 15, Fig. 7, is made of rubberized cord fabric, plastic or other flexible and gas impervious materials. The sides 57 may be made of several plies 58 of rubberized cord fabric, but the ground contacting portion 59 may be of lighter construction. Each roller is inflated through an air valve 60. The sides 57 are connected to the shaft 61 by fittings 64 and bolts 65. Leakage of air is prevented by a sealing ring 66. The chains 17 are passed round sprockets 20 mounted on the end supports 18, 19. These sprockets are coaxial with idler drums 24 around which pass the conveyer 22. The sprockets 20 on the support 19 are driven by the motor 44 through two chains 70, Fig. 8, which engage wheels 71 mounted coaxially with the sprockets. Clutches 72 operated by hand levers 73 are provided to vary the speeds of the sprockets. When the speeds are different, the system moves to one side or the other and the material is deposited over any desired area. The rollers may be mounted in frames 74, Fig. 9, which are connected by universal joints 76. Each roller axle 29 carries a horizontal wheel 77, Fig. 11, which engages a curved guide 78 at any point where the conveyer moves in a curved path. The track 78 is anchored by cables 79 to stakes 80. The belt used in this system is made of rectangular sections 82 connected by a pin 83. In a modification (not shown) each run of the belt is used for conveying.
Patent GB-900769-A (GB)
Title: Improvements in manufacture of tennis strings and the like
IPC: A63B51/02
Filed: 1958-09-30
Abstract: 900,769. Catgut substitutes; covering cores. ASHAWAY LINE & TWINE MFG. CO. Sept. 30, 1958 [July 7, 1958], No. 31194/58. Class 109. [Also in Group V] To make tennis strings a bundle of nylon filaments 10 is passed once or more often through a nylon-based coating bath and subjected to heat and pressure to form a core 10, the core 10 is then wrapped with at least one nylon monofilament 26 and pulled through a heated die 30 where the monofilament 26 is bonded to the core 10. The core 10 may be of monofilament construction, and the wrapping 26 may be applied in the form of a braid. Specifications 674,383 and 732,535 are referred to.