baber/WOPTO huggingface dataset:
Patent GB-245177-A (GB)
Title: Improvements in the method of concentrating or coagulating rubber emulsions
IPC: C25D1/18
Filed: 1924-07-31
Abstract: 245,177. Anode Rubber Co., Ltd., (Klein, P., and Szegvari, A.). July 31, 1924. Latex, treating; indiarubber, preparation of.- In the process for depositing rubber from an emulsion such as latex, on an anode, a screen is interposed between the anode and the cathode to divert gases evolved at the latter from the rubber. The screen may be impermeable with openings suitably placed to lead the gas bubbles away from the anode, or it may allow free passage to the rubber dispersion while preventing the passage of gas, or it may be semipermeable, and allow of the passage of liquid, but not of rubber or gas. In the latter case, the screen may divide the apparatus into an anode chamber containing rubber dispersion, and a cathode chamber containing an electrolyte. A semipermeable screen b separates a rotating anode a and cathode k. To the anode chamber x is supplied latex &c. from an inlet f, and an electrolyte is placed in the cathode chamber y. On passing a current, rubber collects on the anode either as a creamy concentrate or as a coagulated skin, and the serum passes by osmotic action through the diaphragm and escapes by the outlet g. In other forms of apparatus described, the anode consists of a travelling band, or of gypsum moulds with embedded conductors capable of being dipped into and removed from the latex, &c., and the screen may be a series of glass or ceramic dishes, or it may be a travelling fabric band. The cathode chamber may be put under suction to assist the passage of the serum through the diaphragm.
Patent GB-783276-A (GB)
Title: Improvements in and relating to boiler and furnace units for marine propulsion plantand to the arrangement and disposition of such units in ships
Inventor: NORTON ERNEST
IPC: F22B1/18
Filed: 1954-06-24
Abstract: 783,276. Stokeholds and gas-tight compartments. YARROW & CO., Ltd. June 9, 1955, [June 24, 1954], No. 18600/54. Class 113. In a ship the boiler and furnace unit A<SP>3</SP> of its propulsion plant is located in a compartment 18 formed by an integral part of the ship's hull structure 1d and one or more bulkheads 20, 20a, 21 connected by welded or other permanent gastight joints so as to seal the compartment in a gas-tight manner from an adjacent stoke-hold or control room C<SP>1</SP>, the operation of the unit being controllable by rods 10 or tubes 15 extending in a gas-tight manner through one of the bulkheads into the stokehold or control room, the compartment being adapted to be supplied with air at substantially atmospheric pressure (see dash dot arrows) and a forced draught fan 23 being provided to draw air from the compartment, pressurize it and deliver it (see full line arrows) through a closed air trunk 24 to the air registers B<SP>3</SP> of the furnace part of the unit. The broken line arrows show the flow path of the furnace gases to the furnace outlet and the ship's funnel.
Patent GB-895763-A (GB)
Title: Improvements in or relating to cylindrical capacitors
IPC: B61C9/30
Filed: 1960-05-26
Abstract: 895,763. Capacitors. TELEGRAPH CONDENSER CO. Ltd., and HARRISON, R. J. Feb. 28, 1961 [May 26, 1960], No. 18640/60. Class 37. A cylindrical capacitor has a tubular casing of thermoplastic material, e.g. of polystyrene, closed at one or each end by a composite disc, consisting of an outer layer of rubber forming at its periphery a fluid-tight seal with the casing and an inner layer of relatively rigid material, the end or ends of the casing being turned over to bear on the rubber layer. In the form shown, the thermoplastic casing 1 is formed with a shoulder 2 and an aperture 3 in its closed end. A capacitor element 7, preferably a rolled electrolytic having a flexible lead 6 and a lead 9 is inserted into the casing and is secured by a rivet 11 to the composite disc of rubber 12 and " Bakelite " (Registered Trade Mark) or aluminium, for high temperature operation. The rubber disc is of a larger diameter than either the rigid disc or the open end of the casing to ensure an effective fluidtight seal. After insertion of the element 7 and the composite disc a pressing tool 14 heated to a suitable temperature is applied to the end of the casing to turn it over and retain the disc. The tool may be chilled before removal to prevent deformation of the casing end by the rubber disc.
Patent GB-856822-A (GB)
Title: Preparation of pyrrolidinone
Filed: 1957-06-13
Abstract: Pyrrolidinone is prepared by catalytic hydrogenation of a C1-4 alkyl beta-cyano propionate by mixing a nickel hydrogenation catalyst and an inert organic solvent, supplying hydrogen under elevated pressure to the resulting mixture, agitating and heating the mixture under hydrogen to a temperature of 150 DEG -260 DEG C., gradually adding the alkyl cyano propionate to the agitated heated mixture and holding the temperature of the reaction mixture between 150 DEG  and 300 DEG C. under a total pressure of at least 200 p.s.i. while the alkyl cyano propionate is being added to the reaction mixture.  The catalyst may be Raney nickel or reduced nickel on silica or atomaceous earth.  The solvent may be pyrrolidinone itself, an alkanol or an ether such as butyl ether.  Hydrogen may be supplied initially at 30-300 p.s.i. and thereafter as necessary to maintain the desired total pressure. Alkanol formed in the reaction may be vented off.  The reaction may be effected in the presence of a small quantity of ammonia, e.g. 0,1-0,5 mole per mole of alkyl cyano propionate. Examples 1-3 describe the batchwise conversion of methyl, ethyl and butyl b -cyano propionates.  In example 4, the methyl ester is converted to pyrrolidinone by a continuous process wherein an autoclave is charged with methanol and Ni catalyst and heated under hydrogen pressure whereupon a feed of the methyl ester, methanol and ammonia is continuously fed in with make-up hydrogen while product mixture is continuously withdrawn via a micro-metallic filter within the autoclave.
Patent GB-112268-A (GB)
Title: Improvements in or relating to Water Gas Producers.
IPC: C10J3/34
Filed: 1917-12-17
Abstract: 112,268. Compagnie pour la Fabrication des Compteurs et Materiel d'Usines a Gaz. Dec. 19, 1916, [Convention date]. Grates.-To facilitate the removal of clinker, a gas-producer of rectangular cross-section is fitted with a false grate, the bars b of which rest at their inner ends on a central raised bearer d, which at its lower part supports the inner ends of the main grate e, and which may be hollow and perforated for the supply of air. A second series of false grate bars c, transverse to the first, may rest upon them as shown.
Patent GB-1027068-A (GB)
Title: Improvements in and relating to baling packages and the like
Inventor: POWER PETER CLINTON
IPC: B65D63/12
Filed: 1963-05-13
Abstract: 1,027,068. Straps and bands. PACKAGE SEALING CO. Ltd. July 29, 1964 [May 13, 1963], No. 18783/63. Heading A4X. A tie wire or strap for packages has an open loop and a closed loop with its free extremity turned transversely across its standing part, the former being passed through the latter and clipped on to the standing part.
Patent GB-436755-A (GB)
Title: Improvements relating to electric fire and temperature alarm systems
IPC: G08B17/06
Filed: 1934-06-27
Abstract: 436,755. Thermal switches. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, Westminster, TURNER, F., The Crest, Shooter's Hill, London, and HADLOW, H. J., 82, Downderry Road, Bromley, Kent. June 27, 1934, No. 18903. [Class 38 (v)] [See also Group XXXVIII] The heat-sensitive contact device of a fire-alarm system comprises a tiltable mercury switch 4 normally retained ir its inoperative position against the pressure of a spring 6 by a fusible pin 8. The switch has an apertured cover which may be secured to the base by a bayonet socket connection.
Patent GB-313771-A (GB)
Title: Improvements in or relating to water-proofing, more especially for wool and silk goods
IPC: D06M11/45
Filed: 1928-06-29
Abstract: 313,771. Kaberhorn, W. F. June 29, 1928. Proofing.-A dilute aqueous emulsion or suspension of aluminium hydroxide, which is preferably freshly precipitated, is used as the proofing agent. The quantity of hydroxide used, which is varied according to the type of apparatus used for carrying out the process, is between 1 and 5 per cent of the dry weight of the goods being treated and the weight of water used is from twenty to thirty times the weight of the goods. The goods are steeped in the suspension for about twenty minutes at 70‹ C. The process is especially applicable to silk and woollen goods.
Patent GB-400728-A (GB)
Title: Improvements relating to instruments for the measurement of electrical resistance
IPC: G01R27/02
Filed: 1932-07-05
Abstract: 400,728. Resistance measurements. EVERSHED & VIGNOLES, Ltd. and ROLFE, G.B., Acton Lane Works, Chiswick, London. July 5, 1932, No. 19006. [Class 37.] A resistance meter is made sufficiently compact to be carried in the pocket. Fig. 1 is a plan and Fig. 3 a section on the line III-III of an instrument for measuring insulation resistance and including an ohm-meter and generator. The casing is of moulded insulating material and is in two parts 1, 1a held together by screws 2 at the corners. The top of the casing has a window through which the scale 5 and pointer 6 can be seen. The moving-coil ohm-meter has a cobalt-steel permanent magnet 7 held by screws 8. The moving system, comprising a current coil 9, pressure coil 10, and poihter 6, is mounted in jewelled bearings 27, 30 carried by an aluminium or other non-magnetic frame 11, to which is also fixed the scale 5. The frame 11 is secured to the magnet 7 by screws 19, the abutting surfaces of the magnet being shaped to form centering surfaces and the frame having recesses to fit these surfaces accurately. On removing the screws 19 the frame 11 and the moving system may be removed as a unit. The mounting of the moving system is shown in Fig. 6. Jewels 15, 18 are mounted on springs 29 inside adjusting screws 30, 31. The terminals of the instrument comprise brass blocks 34 seated on compression springs 35 in hollow guides 36 formed with rectangular wells 36a and moulded integrally with the casing. At the top of each block is an insulating push-button 37, the top of which is of reduced diameter and protrudes slightly from the top of the casing. The button 37 is depressed until a hole in the block 34 is in alignment with a hole in the side of the case, through which the wire 30 to be connected is inserted and is held by the action of the spring when the button is released. The generator has a U-shaped cobalt steel magnet 39, the armature being driven by means of a handle 45 through gearing 41 .. 44, preferably of fibrous composition. The handle 45 may be folded over so as to lie in a recess 46 in the casing, and is held in its operative and inoperative positions by spring catches 47, 48. The driving- wheel 41 is provided with a one-way clutch 57, Fig. 7, formed by a spring helix with its end turned radially outwards in the form of a loop and engaging a pin 58. On turning the handle in the driving direction the spring tightens round the shaft 49 and drives the wheel 41. Rotation in the reverse direction tends to unwind the spring so that the shaft slips. Resistance coils 62, 63, 64 are provided, two being in series with the pressure coil and one in series with the current coil. The hand generator may be omitted and the tests made by means of an external supply, or by a dry battery housed in a compartment of the casing.
Patent GB-1469486-A (GB)
Title: Testing semiconductor devices
IPC: G01R31/26
Filed: 1974-05-01
Abstract: 1469486 Testing semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 1 May 1974 [25 June 1973] 19037/74 Heading G 1 U [ Also in Division H1] In the manufacture of a semi-conductor device, such as an IGFET, having a phosphosilicate glass (PSG) film on an oxide layer to trap contaminants a test procedure is carried out to determine whether the amount of PSG present in the film is sufficient to trap all the contaminants present. The procedure comprises (1) determining the initial flat-band potential VFB across the film from a measurement of the capacitance-voltage characteristic C-V; (2) applying a fixed stress potential across the film for a time sufficient to polarize the film and at a temperature insufficient to cause drift of contaminants, up to 150C, but preferably room temperature; (3) remeasuring the flat-band voltage to determine the polarization of the film; (4) using the polarization value to determine the amount of PSG in the film, the Specification states that these parameters are directly proportional; (5) using the initial VFB and the polarization to calculate the amount of contaminant present, the formula for this calculation is given; and (6) comparing the amounts calculated in steps (4) and (5) to determine whether the former is sufficient to trap the latter. Wafers for which this is not so are discarded. In practice, since the only measurements made are of initial VFB and of polarization after application of the stress voltage the pass-fail decision can be based upon a single graph such as that shown in Fig. 7. Test MOS capacitors are preferably located in the kerf areas of wafers to be divided.
Patent GB-422128-A (GB)
Title: Improvements in and relating to spraying machines for road surfaces
IPC: E01C19/21
Filed: 1933-07-05
Abstract: 422,128. Road-surface treatment. PAGE, L., (Representative of PAGE, G.), 76, Manville Road, Balham, London. July 5, 1933, No. 19061. [Class 107] Relates to road-surfacing machines of the kind comprising containers for tar and sand or gravel, heating and spray - ing means for the tar, distributing means for the sand or gravel, and a transverse inclined brush disposed in advance of the tar sprayers. According to the invention, the containers 4, 16, are formed separately trom each other and are partially superimposed one upon the other, and have their bases inclined downwardly towards their respective outlets. Further, means are provided for tilting the containers about one end. In the construction shown, the tar container 4 is heated by a furnace 5 and is provided near its outlet with a perforated spraying tube 9 and a hand-controlled valve 6 for regulating the supply of tar to the sprayer. The sprayed tar is spread evenly over the road surface by a brush or a strip 10. The gravel or sand container is mounted upon the container 4 and has near its outlet an agitating device comprising a spiked shaft 17 which is driven by the road wheel 3. The sand or gravel is spread evenly over the road by a trailing member consisting of a number of transverse rods 37 flexibly connected by links 38. The containers are tilted by a screw and nut device 11, 15, the screw 11 of which is rotated by a horizontal manuallyoperated shaft 14 through bevel gearing 13. The sweeping brush 22 is supported by pivoted arms 23 and a chain 36 and is driven, through chain and pinion gearing, by the wheel 3.
Patent GB-578598-A (GB)
Title: Improvements in or relating to the manufacture of polymers of acroleinoxime
IPC: C08F26/02
Filed: 1943-11-16
Abstract: Acrolein oxime is polymerized by the action of heat, natural light or a percompound, e.g. crotonyl peroxide, as catalyst, in mass, solution or emulsion, preferably in an inert atmosphere of hydrogen, nitrogen or carbon dioxide.  Copolymers may be produced. Plasticisers may be incorporated with the product.
Patent GB-1200675-A (GB)
Title: Improvements in or relating to industrial lift trucks
Inventor: GOODACRE CECIL
IPC: B66F9/16
Filed: 1968-04-23
Abstract: 1,200,675. Fork lift trucks. LANSING BAGNALL Ltd. 23 April, 1969 [23 April, 1968], No. 19178/68. Heading B8H. An industrial lift truck comprises a mast assembly 9 and a load lifting carriage 10 mounted for sliding movement up and down the mast 9 carrying load-supporting forks 16. The carriage 10 is split into a rear part 12 carrying rollers 11 for the vertical movement and a front part 13 pivoted, on coaxial horizontal transverse bars 15 on the rear part 12 through brackets 14. A double-acting ram 17 has its cylinder 18 and plunger 180 connected respectively to identical lever mechanisms 20 which support rollers 21 resting against the rear surface of the front part 13 of the carriage 10 adjacent its lower edge. Each mechanism 20 includes a pair of interconnected bell crank levers 19 pivotally mounted about a substantially vertical axis on the rear part 12 of the carriage 10. Extension of the ram 17 causes the rollers 21 to press forwards and pivot the forks 16 clockwise, as seen in Fig. 2, about the bars 15. The front part 13 of the carriage 10 and the forks 16 may be moved along the bars 15 and thus transversely of the truck by a second ram 30, the cylinder of which is pivotally mounted by a spherical joint 33 on the rear part 12 of the carriage 10, the plunger 31 being pivotally mounted by a spherical joint 34 on a bracket 32 on the front part 13. During this transverse movement the rollers 21 act as anti-friction supports.
Patent GB-1357594-A (GB)
Title: Packaging
IPC: B65B9/06
Filed: 1971-06-07
Abstract: 1357594 Seaming non-metallic sheet material SIG SCHWEIZERISCHE INDUSTRIE-GES 7 June 1971 [8 June 1970] 19217/71 Heading B5K [Also in Division B8] Apparatus for transversely sealing a tube 2 containing articles 3 comprises oppositely driven shafts 11, 11<SP>1</SP> carrying cranks 9, 9<SP>1</SP> which support hubs 8, 8<SP>1</SP> carrying opposed welding dies 4, 4<SP>1</SP> which follow circular paths on rotation of the shafts, so as to be brought together in the Fig. 4 position and travel with the tube 2 to a position at which they move apart, the shafts 11, 11<SP>1</SP> being moved apart to permit this continued contact. Cams 24, 24<SP>1</SP> carried by the shafts 11, 11<SP>1</SP> and cams 25, 25<SP>1</SP> carried by stub shafts 14, 14<SP>1</SP>, secured to the cranks 9, 9<SP>1</SP>, are supported by rollers 26, 26<SP>1</SP>, 27, 27<SP>1</SP> and are so profiled (Fig. 5) as to effect movement of the shafts 11, 11<SP>1</SP> and 14, 14<SP>1</SP> towards and away from one another. The hubs 8, 8<SP>1</SP> have legs 31, 31a in slots of which the crank supporting other hub is engaged so as to maintain the dies parallel. To cut the sealed tube, a blade 40 is carried by arms 44 on the hub 8 and a counter blade 48 is carried by arms 46 on the hub 8<SP>1</SP>. In a second embodiment (Fig. 6) only the lower shaft 11<SP>1</SP> is movable. A third embodiment (Figs. 7-9) is identical to that shown in Figs. 5-7 of Specification 1,357,593. The dies are electrically heated and the tube 2 is of plastics or plastics coated paper.
Patent GB-1002374-A (GB)
Title: Improvements in or relating to circuit connecting devices and methods of manufacturing such devices
IPC: H01R12/51
Filed: 1962-05-18
Abstract: 1,002,374. Printed circuits. LITTON INDUSTRIES Inc. May 18, 1962 [Aug. 28, 1961; Jan. 4, 1962], No. 19240/62. Heading H1R. [Also in Divisions B3 and H2] An electrical connecting device comprises an insulating plate carrying a conductive member shaped to extend over a selected area of the plate and to form a plurality of tubular terminals extending away from the surface of the plate, the plate being perforated in alignment with the terminals, and the terminals being adapted to receive conductors extending through the plate. As shown, Fig. 2, a male mould 12, made by casting a flexible plastics material such as silicone rubber in a female mould of steel, A1 &c., is coated by electrolytic deposition or " silvering " with a thin layer 18 of Ag, on which is electropolated a thin layer 19 of Cu. A coating 20 of Ni is selectively plated on the Cu layer by employing a photo-resist technique, after which the end caps 21, 22 are removed by grinding or shearing from terminals 13, 14; the conductive layers are peeled off the mould 12; superfluous Cu and Ag are etched away; and the conductive body remaining is mounted by adhesive on an insulating backing 26, Fig. 4, of fibre-glass, phenolic resin &c. Backing 26 is punched to provide holes through which pass conductors 27, 28, which are welded in terminals 13, 14 by welding electrodes 31, 32; alternatively, these connections may be made by swaging or staking, or by soldering in which case the Ni coating may be dispensed with and the conductive body may be gold-flashed. In a modification, Fig. 10, a female mould 122 is employed; this may be made by casting wax or other lowmelting point material in a mould having upstanding pegs, or by drilling. The mould 122 is plated with a Cu layer 126; a resist 128 is applied where further plating is not desired, and the Cu layer is ground or sanded from the lower mould surface 130. A thin layer 134 of Au, a thicker layer 136 of Ni, and a final thin layer 138 of Au or Pt, are successively electroplated on to the Cu layer; then an apertured board 140 is secured to the plated layers. The mould 122 is melted away; alternatively, it may be made of resilient material which is easily stripped off, or of soluble material. The unwanted parts of Cu layer 126 are etched away. A large printed circuit board so made may subsequently be cut into portions; and a plurality of boards may be mounted in parallel planes with circuit components and/or conductors between them. When a male mould is used, an apertured board may be lowered on to the conductive members on the mould, the terminal passing through and extending beyond the apertures in the board. The terminals may be of non-circular cross-section, and need not be complete tubes.
Patent GB-1328301-A (GB)
Title: Process for the preparation of dehydrogenation catalyst and the use thereof
IPC: B01J23/60
Filed: 1971-06-07
Abstract: 1328301 Vapour depositing zinc or cadmium SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B V 7 June 1971 [9 June 1970] 19254/71 Heading C7F [Also in Divisions B1 and C5] A catalyst is formed by depositing elemental cadmium and/or zinc from the vapour phase on to a carrier supporting a platinum group metal by passing a stream of an inert gas carrying the metal vapour over the carrier. The inert gas may be loaded with metal by passing through the molten metal. Specified inert gases are hydrogen, nitrogen and the noble gases. Suitable gas temperatures are between 325‹ and 600‹C. In the Example cadmium is deposited from hydrogen on to an alumina/platinum carrier.
Patent GB-256396-A (GB)
Title: Improvements in and relating to strut backs for showcards, picture frames and the like and blanks therefor
IPC: G09F1/04
Filed: 1925-07-29
Abstract: 256,396. Fry, Ltd., E. B., and Fry, N. B. July 29, 1925. Card and like stands.-A strut back for show-cards, picture frames, &c. comprising a blank creased to fold at c, d to form a middle attaching portion, a supporting leg, and a link, has notches a cut on each side of the link and a downwardly tapered slot b in the leg. The notches a are wide enough to accommodate the card thickness, and the slot b takes at the top the end width of the link and at the bottom the width between the notches a. A tongue may be cut out of the middle portion to engage an additional tapered slot in the leg. A tongue f may be cut for suspension. The blank may be bifurcated and have two legs, two links, and two tongues f.