baber/WOPTO huggingface dataset:
Patent GB-639392-A (GB)
Title: Process and apparatus for welding glass and similar material and products produced by this process
IPC: C03B23/213
Filed: 1945-09-21
Abstract: 639,392. Welding glass. COMPAGNIE INTERNATIONALE DE GOBEIETERIE INEBRECHABIE SOC. ANON. Sept. 21, 1945, No. 24516. Convention date, May 24, 1943. [Class 56] [Also in Group XXXVI] In joining a glass part to a glass, metal or non-vitreous part by a weld formed of glass derived from the glass part, at least one of the parts being pre-formed and at least one of the parts being placed in or itself forming an enclosing mould, a vacuum is applied to the weld zone while the glass is at softening temperature. Fig. 2 shows a mould 1 for forming a stem 13 and base 14 for a pre-formed glass bowl 2, reduced pressure being applied through a conduit 8 and passages 7 and 6 to form a sound weld at 11 and to ensure that the molten glass fills the stem portion of the mould ; after introduction of the molten glass, a plunger 15 is moved down to complete the mould for the base 14, which may be subsequently finished as required. The formation and application of a glass handle in similar manner is described. The blank 2 may be pre-formed in the mould 1 by blocking in the stem or handle extension. For welding two pre-formed glass elements together, e.g. glass tubes or hollow bricks or paving blocks, a mould is applied having vacuum passages leading to the point of junction. Designs may be applied in this manner. A glass cup with a metal stem may be formed by blowing the bowl in a mould applied to the end of the hollow metal stem and applying suction therethrough to draw glass from the bottom of the bowl into the stem interior, which may be coated with a metal or alloy, e.g. containing tin, that unites easily with glass ; the stem may be heated by a ring of burners, and the vacuum inhibits oxidation. The invention is applicable to the attachment of conductors or other metal parts to lamps, tubes and laboratory apparatus.
Patent GB-599759-A (GB)
Title: Improvements in or relating to sewing machines and attachments therefor
IPC: D05B3/18
Filed: 1945-09-24
Abstract: 599,759. Sewing-machines. STEELS & BUSKS, Ltd., and VIGRASS, H. Sept. 24, 1945, No. 24657. [Class 112] Eyeletted tapes, attaching.-A machine for sewing eyeletted tapes to the edges of garments is provided with a normally-ineffective needle deflector which is brought into operative position when necessary to prevent the needle from striking one of the eyes. The invention is applied to a needle-feed machine, the deflector oscillating with the needle-bar except when detained by a detector raised by the presence of an eye beneath the needle; in a twin-needle machine sewing two seams of which only one crosses the eyes, the deflector is applied only to the needle sewing the latter seam, and in order to support the work under the deflector the work-plate under this needle has only a slot for the needle, the usual feed-dog being provided under the other needle. In the embodiment shown, the needle-deflector 1, having an inclined needle-engaging surface 1d, is pivotally mounted on the oscillating needle-bar carrier and provided with a spring 4 which normally keeps it in a position just clear of the needle 2a. A bracket 5, which is carried by a fixed part of the machine and which may be removable or adjustable, has pivoted to it a detent 11 pressed downwards by a weak spring on its pivot 9, and the detector 17 is pivoted to the detent at 18, being pressed downwards by a spring plunger 16. When an eye e is in such a position that it is liable to be struck by the needle, the detector is raised by the eye, and this raises the detent 11 so that when the needle-bar and the deflector 1 swing forward after feeding the work the detent 11 engages a surface le on the deflector and prevents it from completing its movement so that it remains in a position to deflect the needle clear of the eye when it descends.
Patent GB-534535-A (GB)
Title: Improvements in impervious packings and receptacles
IPC: B65D75/26
Filed: 1939-08-28
Abstract: 534,535. Compound sheet materials; wrappings; hollow-ware. NICOLLE, C. Aug. 28, 1939, Nos. 24671 and 24672. Convention dates, Sept. 10, 1938 and April 11, 1939. [Class 140] [Also in Group XVII] A packing, wrapping or container having one or more recesses for the reception of the articles, tablets, powder or grains to be packed is made from two recessed, e.g. moulded or stamped sheets of plastic material having interposed therebetween a layer of waterproofing material. The layer may comprise cellulose esters, polyvinyl or polyacrylic esters, artificial resins, paraffin, rubber latex or rubber solution. The layer may be a coating on one or both of the sheets or a film varnished on both sides and interposed between the sheets. As shown in Fig. 4, the plastic sheets 1, 2 have a layer 3 of varnish between them. The sheets may be assembled either hot or cold, and before or during shaping. In the modification shown in Fig. 6, a container is made from plastic sheets 13, 14 and an intermediate film 15 obtained from rubber latex which may or may not be secured to the sheets by a varnish. The Specification as open to inspection under Sect. 91, describes also a single plastic sheet 13, Fig. 8 (Cancelled), adhered to a film 15 obtained from rubber latex and a packing made therefrom. This subject-matter does not appear in the Specification as accepted.
Patent GB-532366-A (GB)
Title: Improvements relating to gas cooking stoves
IPC: F24C3/02
Filed: 1939-08-28
Abstract: 532,366. Oven stoves. JACKSON, R. S. Aug. 28, 1939, No. 24688. Convention date, Sept. 1, 1933. [Class 126] An oven contained within completely insulating walls has a concavity 12 in its bottom wall into which the hot gases from a tube 13 pass from the burner and from which they are distributed round the oven.
Patent GB-713855-A (GB)
Title: Improvements in axial flow fans
IPC: F04D29/36
Filed: 1951-10-23
Abstract: 713,855. Axial-flow fans. STURTEVANT ENGINEERING CO., Ltd., WHITE, W. G., and LANCHESTER, F. G. Oct. 1, 1952 [Oct. 23, 1951], No. 24720/51. Class 110(1) In an axial-flow fan in which the pitch of the blades can be adjusted by rotating the blades relatively to the hub 10, each blade stub 11 is formed with a flat or other non-circular portion which is engaged by a pitch-setting member 14 which is removably secured to the hub. The blade stubs 11 are inserted axially into T-section slots formed in the peripheral flange 10c of the hub, and a cover plate 12 is then attached by screws 13 to close the open ends of the slots. The member 14 comprises a plate which has a chamfered edge which engages the correspondingly chamfered edge of the cover plate 12 so that as the plate is drawn inwardly against the hub by screws 15, its inner end 17 is pressed firmly against the flat on the neck 11a of the blade stub. The plate 14 is interchangeable with similar plates in which the end 17 is at various angles to the outer end 18 instead of being parallel thereto, whereby the pitch angle of the blades may be altered. Instead of being parallel to the hub axis, the plate 14 could be arranged parallel to the mean tangent to the hub periphery between the blade axis and the free edge of the flange 10c.
Patent GB-406741-A (GB)
Title: Improvement in concentration of ores by flotation
IPC: B03D1/06
Filed: 1932-09-05
Abstract: Ores containing sulphide minerals of copper and nickel are concentrated by flotation by treating the ore pulp with a cyanide prior to the flotation so as to inhibit the flotation of the nickel mineral.  The pulp is preferably made alkaline and zinc sulphate may be added to improve the recovery of the copper. After the removal of the copper, the pulp may be again subjected to flotation, preferably after addition of copper sulphate, to recover the nickel.  The concentration of an ore containing copper sulphide (chalcopyrites), nickel sulphide (pentlandite), and iron sulphide (pyrrhotite) is described, the one being first ground to free the minerals.  The pulp is made alkaline by the addition of lime and a collecting agent such as amyl xanthate is also added, these additions being preferably made during the grinding stage. A cyanide of an alkali or alkaline earth metal, zinc sulphate, and pine oil are then mixed with the pulp and a copper concentrate separated by flotation, this concentrate being cleaned with the addition of lime.  Copper sulphate is then added to the reject from the first flotation and the nickel is recovered by a further flotation using a collecting agent such as sodium ethyl xanthate. Specification 240,929, [Class 82 (ii)], is referred to.
Patent GB-718229-A (GB)
Title: Improvements in and relating to laminated materials and method and apparatus for making the same
IPC: A47C27/00
Filed: 1952-10-02
Abstract: A bonding substance which is flexible after curing is used in making a laminated cover for car seats and seat backs.  The covering includes a deformable padding layer between cover and foundation layers, bonding substance being applied to the foundation layer or to the padding layer or to both and cured by the heat and pressure applied to the layers during a pressing operation.  Flexible bonding regions are produced by means of a rubber-like bonding substance mixed with a phenolic resin.  A liquid varnish is prepared by mixing, in water, 22 to 28 per cent. by weight of a rubber cement composed of three parts of synthetic or natural rubber or latex and one part of rosin or colophony and 5 to 11 per cent. by weight of phenolic resin which includes a thermo-setting resin such as a phenol-formaldehyde or a urea-formaldehyde resin.
Patent GB-302410-A (GB)
Title: Improvements in or relating to storage cabinets for gramophone records, and the like
IPC: A47B81/06
Filed: 1927-09-21
Abstract: 302,410. Constructors, Ltd., and Finer, H. J. Sept. 21, 1927. Cabinets.-A cabinet for gramophone records consists of a rectangular box-like member with a hinged front and double-walled top and ends, grooves, serrations &c. being provided in the top and bottom to hold movable partitions. In the arrangement shown the partitions are formed of elastic wires or rods 12, the upper ends of which engage with slots in an angle member 11 secured to the top of the cabinet, the lower ends. entering holes in a channel member 6d secured to the bottom. The rods are of such length that they are bent when in place and are secured by their own resilience. A second channel member 6e forms with the member 6<d> a trough for receiving the lower edges of the records. The door 7 is secured by stays 8 entering the hollow ends of the cabinet and carries a frame 14 carrying a numbered strip corresponding to the compartments of the cabinet. An index card may be placed in a pocket 15 secured to the top. The top and ends, and preferably the door and back, are double walled.
Patent GB-476518-A (GB)
Title: Improvements in or relating to variable speed gears
IPC: F16H9/12
Filed: 1936-09-11
Abstract: 476,518. Expanding - pulley gearing. KING, E.G., CLOSE, J. B., and ROBERT, R. Sept. 11, 1936, No. 24822. Convention date, Dec. 30, 1935. [Classes 80 (i) and 80 (ii)] The working - faces b, d respectively of a V-groove expanding- pulley a and the working - elements c of a belt, are formed as surfaces of revolution of a curve, other than a circle, the algebraic equation of which is of the second degree, and the belt-elements c are flexibly or pivotally connected together and are each formed of one non-resilient piece of metal. A suitable curve is an ellipsoid. By these means the belt requires only a small force to vary the speed-ratio, and excessive tension will cause it to slip rather than break or jam in the pulleys. Constant belt-tension in varying speed-positions is also assured. In Figs. 3 to 5, the belt comprises a series of pivoted metallic links e, slotted to receive the working- elements c. In modifications the working- elements constitute the pivots for the links e; or they are directly pivoted together without additional links ; or they are threaded on one or more lengths of stranded metal cable, together with wedge-shaped spacers alternating between the working-elements.
Patent GB-997352-A (GB)
Title: Abrasive bodies
IPC: B24D18/00
Filed: 1961-07-10
Abstract: A shaped abrasive body comprises graphite-free diamond particles substantially uniformly embedded in a matrix which forms a bond with diamond, is a good oxygen getter, and has a mechanical strength approaching that of diamond. The body is produced by mixing the diamond particles with the getter, subjecting the mixture to a pressure at which graphitization is inhibited, e.g. 45,000 atmospheres, and then heating to a point at which the matrix melts, e.g. 1500-1900 DEG  C., preferably 1750-1800 DEG  C., cooling below the graphitization temperature and releasing the pressure.  A suitable diamond powder is one in which 80.5% comprises particles of 15-30 m , 16.5% of 4-8 m  and 3% of 0.5-1.5 m , while suitable getters are titanium, vanadium, zirconium, chromium, silicon, and alloys and mixtures thereof.  In particular, a preferred mixture consists of 16% silicon and 84% of such a diamond powder which has been cleaned either by heating at 400 DEG  C. in a molten potassium nitrate and hydroxide mixture, or by heating first with 50% hydrochloric acid and then with sulphuric and hydrofluoric acid.  The compact may be formed into tools or crushed to 100-240 mesh powder and used to form resin-bonded wheels.
Patent GB-1469971-A (GB)
Title: Lathes
IPC: B23B3/16
Filed: 1974-06-05
Abstract: 1469971 Turret lathes SMT MACHINE CO AB 5 June 1974 [6 June 1973] 25033/74 Heading B3T An automatic turret lathe comprises a headstock 2 in which is mounted a workspindle 1 with its axis horizontal, the headstock being rectilinearly movable in a direction perpendicular to the axis of the spindle, a tool turret 11 mounted for rotatable indexing about an axis which is perpendicular to axis of the spindle the headstock being movable in a direction perpendicular to the direction of movement of the turret. The movement of the headstock permits a workpiece 5 carried by the spindle to be displaced from the machining area and removed manually after the completion of a machining operation. The tools carried by the turret may be located radially and/or longitudinally of the turret axis in axial spaced planes of location. Separate drive means 7 and 10 is provided for movement of the headstock and the turret, the turret being mounted on a turret slide whose guides are in a substantially vertical plane and which is at right angles to the bed 6 supporting the headstock. A chip tray 14 and possible conveying means may be provided beneath the machining area.
Patent GB-338206-A (GB)
Title: Improvements in and relating to asphaltic or bitumastic materials for surfacing roads or water-proofing purposes and processes for forming and using said materials
IPC: C08L95/00
Filed: 1929-08-16
Abstract: 338,206. Hill, F. A. Aug. 16, 1929. No Patent granted (Sealing fee not paid). Bituminous compositions.-A cold.lay composition for surfacing roads, canal beds, &c., and which is stable when stored in hermetic containers, is made by mixing at 212-400‹ F. asphalt, bitumen, tar, pitch or asphaltic petroleum residues with a fuel oil or petroleum product from which all the lighter portions including the illuminating oils have been removed. The oil (65 to 45 parts) is added slowly with agitation to the heated asphaltic material (85 to 55 parts). Specifications 22738/13 and 257,114 are referred to.
Patent GB-977066-A (GB)
Title: Polytetrafluoroethylene compositions
IPC: B29C48/08
Filed: 1962-06-29
Abstract: Compositions in the form of a gel comprise a mixture of finely divided polytetrafluoroethylene and a liquid polymer of chlorotrifluoroethylene having a viscosity in the range of 3 to 500 centipoises at 20  DEG C. The gels may be aged, calendered and formed into shaped articles such as tapes, films, filaments, rods, tubes, pipes and channels, by extrusion, injection moulding, blow moulding, compression moulding or vacuum forming, and the chlorotrifluoroethylene polymer removed by solvent extraction, e.g. with trichloroethylene, and the articles subsequently sintered if desired.
Patent GB-1115444-A (GB)
Title: Combine having a maize harvesting attachment
IPC: A01D41/16
Filed: 1965-06-15
Abstract: 1,115,444. Combine harvesters. MASSEYFERGUSON Ltd. 15 June, 1965 [28 July, 1964], No. 25179/65. Heading A1F. A. maize-harvesting attachment 72 for a combine-harvester has coupling elements 90, 102 which are engageable with corresponding elements on the harvestertable 26 enabling the attachment to be secured to the front of the table and the drive to the cutter-bar 38- transferred to the snapping rollers and gathering chains of the attachment. The combine is of the type having a table 26 detachably secured to an elevator housing 24 at points 27, 29, there being- a main chain-drive to a shaft 44 from which a chain-drive 138 and a belt-drive 42 pass to a sprocket 140 and the cutter-bar respectively. The sprocket 140 is mounted on a shaft 70 (Fig. 4, not shown) carried by a side-shield 52 of the header-table 26. The side-shield has a groove 56 engageable by a roller 90 on the attachment 72 so that when the attachment is presented to the header-table the roller 90 passes along the groove until it is concentric with the sprocket 140. Simultaneously, a shaft 102 carried by arms 100 engages abutments at the rear of the table 26 and are locked there by a hooked latch 112: The shaft 44 carries a clutch (Fig. 8, not shown) whereby the drive can be disconnected from the cutterbar 38 and transferred to the shaft 70, through the chain 138, and sprocket 140. Coaxial with the roller 90 is a laterallymovable coupling which couples the chaindrive 138 to the snapping rollers and gathering chains (not shown) of the attachment. The header carries a reel 34 drivable by a belt 40, these partsbeing removable from the header when the maize attachment is used. A hydraulic ram 96 raises and lowers the header to facilitate connection of the attachment.
Patent GB-169456-A (GB)
Title: Improvements in radio-receiving systems
IPC: H04B1/12
Filed: 1921-09-22
Abstract: 169,456. Marriott, R. H. Sept. 22, 1920, [Convention date]. Drawings to Specification. Protective arrangements.-The Specification as open to inspection under Sect. 91 (3) (a) describes a method of eliminating the effects of disturbing electric forces applicable to surges in power transmission lines but described with reference to eliminating interference from atmospherics, in which the disturbing forces are caused to produce two currents of definite but different frequencies. One of these is then transformed to have a frequency equal to that of the other, and the two currents are then combined to neutralize each other. In an example, tuned circuits of different frequencies comprising inductances influenced by the magnetic field set up by the disturbance are provided, and the frequency doubling circuit is coupled to the final circuit through an additional tuned circuit. The application of the invention to power circuits is not referred to in the Specification as accepted.
Patent GB-658230-A (GB)
Title: Improvements in and relating to coffee making apparatus
IPC: A47J31/043
Filed: 1949-10-03
Abstract: 658,230. Coffee - making apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 3, 1949, No. 25378. Convention date, Oct. 12, 1948. [Class 129] A coffee-maker comprises a sealed dispensing receptacle or coffee pot 1 having a spout 9, the lower end of which opens near the bottom of the receptacle, and the mouth 11 of which is sealed to one end of a tube 15, the other end of the latter being provided with a filter 27 and being received in a brewing receptacle 13 located adjacent the pot 1. The pot 1 of a vacuum-type percolator seats on an electric heating element 7 in a base 8 adjacent a recess 14 for an open burning receptacle 13, e.g. a cast glass or metallic jar. A sealing gasket 18, which encircles the outer end 19 of the tube 15, is pressed into the flared mouth 11 of the spout 9 by one end of a spring 20, the other end of which is secured to the underside of an inverted U-shaped handle member 22. The lower ends of the handle member 22 are secured to the base 8, while the upper end supports the handle proper 25. A projection 30 of the tube 15 hooks over a side of the receptacle 13. The lower end of the tube carries a support 26 for a filter cloth 27 secured by a draw string 28. In use, the lid 4 of the pot 1, in which water has been placed, is sealed thereto by a gasket 5 and bayonet clamp 6, the spring 20 is raised and the pot 1 is placed on the element 7, the gasket 18 being forced into the mouth 11 when the spring is released. The air expanding above the heated water at first escapes through a vent 12 in the inner wall of the spout 9, but finally steam pressure forces water through the tube 15 into the coffee-containing receptacle 13, the brewed coffee finally being drawn back into the pot 1 in known manner. As the pot 1 is being removed from the base 8 the tube 15 tilts backwards about its projection 30, against the action of the spring 20, little or no coffee being left in the outer end 19. The entire coffee-making cycle may be automatic, the thermal control means of Specification 550,632 being used.
Patent GB-289702-A (GB)
Title: Lavatory seat
IPC: A47K3/12
Filed: 1927-09-26
Abstract: 289,702. Harris, J., Sept. 26, 1927. Plastic compositions containing indiarubber and fibres, &c.-Closet seats have a hard upper layer formed from a composition consisting of 10 parts of granulated cork, shavings, fibre, pÔpier-machÚ, or sawdust or a mixture thereof, 6 parts of rubber and/or reclaimed rubber, 1 part of glue, and colouring and vulcanising ingredients, and a tower layer of sponge rubber and colouring and vulcanising ingredients. The layers are pressed in a mould and vulcanised, a projecting rib being formed around the bottom of the seat.
Patent GB-692472-A (GB)
Title: Improvements in or relating to radio receiving systems
IPC: G01S3/08
Filed: 1948-09-30
Abstract: 692,472. Directive radio systems; multiplex radio signalling. PHILIPS ELECTRICAL, Ltd., and ODELL, L. F. Sept. 7, 1950 [Sept. 30, 1948], No. 25495/48. Classes 40 (v) and 40 (vii). A radio receiving system comprises an Adcock aerial system, each element of which is coupled through its own master thermionic valve to feed its own plurality of slave valves in parallel, the slave valves being connected in sets consisting of one slave valve fed from each aerial element to feed a plurality of loads, one load being associated with each set of valves and the master and slave valves being so arranged that the matching for each aerial element is independent of the load, no interaction occurs between the different load circuits and the output of each slave tube is substantially matched to the associated load impedance. The invention is of particular value where it is desired to feed a number of independent direction-finding receivers from a single aerial system or for the directional reception of a number of broadcast programmes at the same time on a single aerial. The master and slave valves may conveniently be connected as cathode followers and each load circuit may comprise a goniometer feeding a receiver. In one embodiment, four Adcock aerial elements N. S. E. W. (of which only the element N. is shown), arranged in the conventional manner, feed through phasing units 1 and master cathode follower valves 2 their own series of slave valves 3. Considering one set of slave valve outputs N1, S1, El, W1 the N 1 and E1 1 signals are reversed in phase by units 4 and the N1, S1 and E1, W1 signals applied to opposite ends of potentiometers 5, the adjustable tapping-points on which feed receiver 61. Variation of the tapping-points on the potentiometers varies the direction of maximum sensitivity for the reception of signals and other receivers 62 and 63 may be connected by similar means, not shown, to other sets of slave valves.