baber/WOPTO huggingface dataset:
Patent GB-996535-A (GB)
Title: Improvements in and relating to oven doors
Inventor: NICHOLSON WILLIAM ARTHUR
IPC: F24C15/02
Filed: 1963-05-09
Abstract: 996,535. Hinges &c., stays. RADIATION Ltd. March 13, 1964 [May 9, 1963], No. 18343/63. Headings E2F and E2M. [Also in Division F4] A detachable drop-down hinged oven door arrangement comprises a link c, spring-urged inwards of the plane of the oven front 17, on at least one side of the oven supporting structure and incorporating at its lower end 18, a slot 19 which engages a bush or pin 11 in the oven door a, forming an upper supporting pivot means for the door, and in its upper edge, a cam projection 20 together with a slot 21. The link also has a lower cam surface engaging a roller d on the said structure. The arrangement also includes a hinge member 14 fixed at 15, to the said structure, embodying a slot 13 which engages with a bush or pin 12, in the door a, to form a lower supporting pivot means for the door, and a keeper device 22 slidable on the link c and manually engageable with the slot 21, when the door a is in a partially open position, in such a way as to lock the link c in a substantially stationary position when a closing movement is imparted to the door. The locking of the link c enables the bush 12 to be swung clear of slot 13 and the door a to be lifted clear at bush 11, the arrangement being such that removal of the door is only possible within a restricted angular range of 35 degrees to 45 degrees to the horizontal. During replacement of the door an opening movement causes the keeper 22 to be lifted out of the slot 21 due to the engagement of a lower slot in the keeper with the edge 27 of the hinge member 14. Thus the keeper slides down the link and positions itself so as to prevent the movement of the bush 11 out of the slot 19 and hence the removal of the door. The hinge bracket 16 may incorporate a flanged triangular wing section, Fig. 7 (not shown), which prevents anti-clockwise pivoting of the link during the replacement of the door.
Patent GB-1008019-A (GB)
Title: Improvements relating to the production of lubricating oils
Inventor: DEMEESTER JACQUES
IPC: C10G45/60
Filed: 1963-05-09
Abstract: A lubricating oil base stock obtained by distillation is subjected to hydrogenation in the presence of a sulphur-resistant hydrogenation catalyst at at least 325 DEG  C., preferably in the range 400-475 DEG C., and redistilling the hydrogenated product under a vacuum greater than that of the original distillation so that heavy fractions having a higher viscosity index than the feedstock are separated.  The redistillation pressure is preferably not greater than 100 mm. Hg, and is preferably less than 1/10 of the initial distillation pressure.  The base stock may be dewaxed either before or after hydrogenation. The catalyst preferably comprises 0.1-10% wt. cobalt oxide and 5-25% wt. molybdenum oxide supported on alumina, with if desired 5-25% wt. iron oxide.
Patent GB-392374-A (GB)
Title: Improvements relating to a process for separating cadmium from material containing cadmium and other metals or compounds thereof
IPC: C22B17/02
Filed: 1932-06-29
Abstract: A process of separating cadmium from material such as ores, furnace products, or flue or bag-house dusts containing also other metals or compounds thereof which comprises sulphatizing it with sulphuric acid, or spent electrolyte obtained subsequently in the process, heating, e.g. from 600-800 DEG  C., to drive off excess acid and volatile arsenic and to render zinc insoluble, and leaching the preferably ground material with water to obtain cadmium sulphate, is characterized by adding cadmium sulphide to precipitate impurities from the solution which is then electrolysed for the production of metallic cadmium.  The residue from the leaching contains lead sulphate and the insoluble zinc. The impurities removed from the solution may be lead, copper, bismuth, mercury and part of the arsenic.  Prior to electrolysis, the liquor is brought to a sp. gr. of 1,30 and iron removed by heating the solution oxidized with sodium chlorate and neutralized with lime.  The remaining arsenic is carried down with the iron. Thallium if present is removed by adding sodium chromate, and excess of the latter by lead sulphate or by reduction to chromic sulphate with sodium sulphide and precipitation with caustic soda. The purified solution containing say 100 grams cadmium per litre is electrolysed employing a ferrosilicon anode, and a cathode comprising cadmium sheets previously deposited on and removed from an aluminium cathode.  The finished cathodes may be melted without fluxes.  Residual cadmium may be removed from the spent electrolyte by precipitation with lime, or all or part of the spent electrolyte may be employed, preferably after concentration, to sulphatize the raw material.
Patent GB-330145-A (GB)
Title: Improvements in material classifying devices
IPC: B02C13/13
Filed: 1929-06-14
Abstract: 330,145. Lykken, H. G. Dec. 5, 1928, [Convention date]. Impact pulverizers.-A separator pr classifier of materials has a duct extending into a telescopic separating chamber and means associated with the duct for giving a whirling motion to the material entering the chamber from the duct; the walls of the chamber and the duct form a trough for the reception of separated material. Air or other gas is drawn in through the entry 8, and passes through the apparatus to the discharge outlet 17 carrying with it particles of a desired degree of fineness. The material is passed into a chamber 1 by a stepped feeder 6 reciprocated by mechanism which is also connected to the feeler 7. When the feeding is slow the feeler 7 drops and causes the mechanism to increase the action of the reciprocating feeder 6. The arms 3 of a rotor 2 whirl the material with entrained air until it passes upwards through the opening 10. During this stage the material is reduced by rubbing and also by impact upon the inclined walls 36, 38 of the chamber 1; impact bars 39 are provided on the wall 38. The members 37 on the wall 36 prevent the material from sliding upwards and a baffle 40 is placed in the path of the material. A chamber 11 is arranged above the chamber 1 and has conical and cylindrical parts 12, 13. Inside this chamber is a conical section 19 axially adjustable by screws 24 and nuts 26, and this section carries a duct 21 with a flared mouth 22. The parts 21, 19 are secured together by brackets 28 attached by bolt and slot connections so that the relative positions of the parts may be varied. An annular opening 20 of variable width is thus left between the parts. A number of vanes 32 are arranged round the top of the duct 21 and are supported on a plate 30 the position of which can be adjusted by means of a rod and nut 34, 35. The vanes are preferably curved and are disposed at an angle so that the stream from the duct is given a whirling motion inside the section 19, and the length of the openings between the vanes is varied by the mechanism 34, 35. The material passes from the opening 10 to the duct 21 and then between the vanes 32. The heavier and larger particles are thrown out, and drop down through the annular space 20 to the chamber 1, while the finer particles are carried by the air stream to the outlet 17.
Patent GB-1170709-A (GB)
Title: Improvements in or relating to the Doping of Semiconductor Crystals with Phosphorus
IPC: C30B31/08
Filed: 1968-04-19
Abstract: 1,170,709. Diffusion process. SIEMENS A.G. 19 April, 1968 [20 April, 1967], No. 18515/68. Heading H1K. A process for diffusing phosphorus into a heated semi-conductor crystal uses a dopant source prepared by previously melting together phosphorus pentoxide and a phosphate of an alkaline earth metal. Diffusion may be carried out in a closed system or in a stream of inert gas with the crystal and source kept at the same temperature, the partial pressure of phosphorus being determined by the composition of the source. The sources are glassy substances and may be made from the tertiary phosphates of calcium and magnesium. Use of strontium and barium is also suggested.
Patent GB-180237-A (GB)
Title: Agglutinant for veneer
IPC: C09J189/00
Filed: 1921-07-08
Abstract: An agglutinant for veneer is prepared by mixing together lenzin (an impure gypsum), water, a small quantity of ochre, and p  leather glue which has been soaked in water for some time, for example 14 hours.
Patent GB-112964-A (GB)
Title: Improvements in or relating to Chain Stitch Inseam Boot or Shoe Sewing Machines.
IPC: D05B15/00
Filed: 1916-12-29
Abstract: 112,964. British United Shoe Machinery Co., (United Shoe Machinery Co.). Dec. 29, 1916. Drawings to Specification. Boot-sole sewing-machines; starting and stopping gear.-The curved hooked needle is given a movement of advance from a retracted position to free the hook from the loop of thread, and comes to rest in this advanced position out of the work to allow removal of the work from the machine. The welt-guide also is given a movement of retraction. Preferably these movements are obtained by a continued forward rotation of the camshaft. The sewing-machine described as regards the mode of operations of its parts is the same as described in Specifications 20712/09 and 3342/13 and differs from the latter in being so timed that the machine is finally arrested with the needle somewhat advanced from what has hitherto been the stopping position, and bv the absence of devices for rendering the looper inoperative before the machine stops.
Patent GB-214519-A (GB)
Title: Improvements in whistles
IPC: G10K5/00
Filed: 1923-07-19
Abstract: 214,519. Hudson, J. C., and Hudson, J. July 19, 1923. Whistles.-In a whistle comprising a cylindrical barrel a and a tangential mouthpiece b, the knob or pommel e which carries the attachment ring d is provided with wings f which are held by the flanged edges c<1> of the end-caps c of the barrel, the whole being secured by soldering or brazing. The correct relative positions of the mouthpiece and pommel are maintained by providing the flanged edges c<1> with grooves g, h which are engaged respectively by the wings f and by shoulders a<2> on the barrel. The pommel e is formed from a sheet-metal blank.
Patent GB-631415-A (GB)
Title: Improvements in and relating to aluminium phosphate phosphor
IPC: C09K11/77
Filed: 1947-07-14
Abstract: 631,415. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd. July 14, 1947, No. 18669. Convention date, July 15, 1946. [Class 39 (i)] A fluorescent material comprising aluminium phosphate activated by cerium and thorium is prepared by dissolving a mixture of 25.4 grams Al2(NO3)39H2O, 3.6 grams Ce(NO3)36H2O and 1.6 grams Th(NO3)44H2O in 200 ml. water and adding (NH4)2HPO4 dissolved in hot water. The product is filtered, washed, dried, crushed and fired at 1200‹ C. for one hour in a reducing atomsphere, e.g. hydrogen and steam. It converted the U.V. radiations of 2537 Š in a L.P.M.V. lamp to longer U.V. radiation, and may be used for blue-printing or as a source of long-wave U.V. light for exciting other phosphors, e.g. sulphides. The optimum range for ThO2 content is .2-15 per cent. Amounts of Ce2O3 of 12-25 per cent are mentioned. Specification 550,744 is referred to.
Patent GB-381582-A (GB)
Title: Method and furnace for producing spun threads from glass
IPC: C03B37/022
Filed: 1931-06-29
Abstract: 381,582. Making glass threads. R Í S S L E R, W., 25, Feldherrenstrasse, Dresden, Germany. June 29, 1931, No. 18722. [Class 56.] A method of making glass threads or fibres by drawing the molten glass directly from the furnace consists in fitting drawing-nozzles in a forechamber attached to the furnace, and in making the entrance to the forechamber so narrow that only glass which is sufficiently fluid to be drawn reaches the nozzles. The threads may be hollow and may be coloured if desired. The furnace, which may be heated by any suitable means, comprises a chamber 1, Fig. 1, fitted with a cone 2 for distributing the unmelted material, and a grid 4 through which the molten glass passes into a second chamber 3 and thence through another grid 5 into a third chamber 6. The chamber 6 is divided by extensions 7 of the grid 5 into smaller compartments which become wider towards the lower part where the drawing-nozzles are fitted. A slide 8 enables the flow of glass to the nozzles to be interrupted when desired. In a modified construction, the furnace is annular, the chamber 1 surrounding the chamber 3 and the grid 4 forming the wall between them. In another construction, shown in Fig. 3, the chamber 3 is arranged at the side of the chamber 1 and at a slightly lower level, the flow of glass from one to the other being regulated by a slide 10. The third chamber 6, is tapered and is divided into smaller compartments by partitions 12 which distribute the molten glass over the whole of the drawing-nozzles. Passages 9 between the chambers 1 and 3, and also the chamber 6, are smaller at their admission ends in order to obstruct the flow of glass that is not sufficiently fluid to be drawn. A nozzle for forming solid threads consists of a conical mandrel 15 supported in an aperture formed in a plate 14. The molten glass flows between the mandrel and the plate and forms a thread which is drawn away by suitable mechanism. When hollow threads are to be made, the mandrel 15 is not pointed but has an enlarged base and is formed with an axial passage 18, as shown in Fig. 8. A number of these nozzles are secured to a bar 19 which is formed with a passage 20 that communicates with two tubes 21, 22. While the glass is flowing around the mandrel, air is blown through the tube 21 and into the passage 20 and passes through the passages 18 into the molten glass and ensures that the glass thread is tubular. Excess air escapes through the tube 22 and prevents the pressure from becoming too great within the mandrels. Air also escapes through passages 23 and cools the nozzles. Instead of using air, steam carrying particles of metal or colouring agents in suspension may be blown through the nozzles, the passages 23 being closed. The colouring matter is deposited in the bore of the glass thread.
Patent GB-700533-A (GB)
Title: Improvements in or relating to multi-way electric switches
IPC: H01H25/04
Filed: 1951-08-09
Abstract: 700,533. Mechanical switches, without quick action; retractive switches; snap-action switches. MOREL C. E. Aug. 9, 1951, No. 18753/51. Class 38(5) A multi-way switch comprises a conducting lever 11 having a slot 18 co-operating with a fixed guide pin 1 and urged by a spring 12 so that knife edges 14, 15 thereon engage a conducting bar 13 carrying stud contacts 16, 17. The shanks of the contacts 16, 17 freely extend through openings in the lever 11 whereby the latter is connected to the bar 13. The lever 11 is movable both lengthwise and pivotally about the pin 1 so that the contacts 16, 17 engage a selected pair of fixed contacts 2 ... 9. Further, the lever may be pressed downwardly to pivot on its knife edge 15 against the action of the spring 12 and engage a contact 10. The lever is connected in circuit through the pin 1. In a modification upward movement of the lever about the knife edge 14 may close a further pair of contacts, not shown. To automatically index the switch the fixed contacts such as 34<SP>1</SP>, 34<SP>2</SP>, Fig. 6, may be formed as eyes separated by ridges 31 integral with the insulating switch base 32, the ridges-having inclined faces 31<SP>1</SP>, 31<SP>2</SP>, which co-operate with a movable contact such as 33 under the action of the spring 12.
Patent GB-189832-A (GB)
Title: Improvements in magnetic material and its use for loading telephone and telegraph conductors
IPC: H01B11/14
Filed: 1921-07-12
Abstract: 189,832. Western Electric Co., Ltd., (Western Electric Co., Ino.l. July 12, 1921. Addition to 188,688. Alloys.-The resistivity of the magnetic material described in the parent Specification is increased by the addition of another element, such as chromium. The material may contain, for example, 55 per cent of nickel, 34 per cent of iron, and 11 per cent of chromium. Specifications 189,075, [Class 37, Electricity, Measuring &c.], and 189,410 are referred to.
Patent GB-646975-A (GB)
Title: Improvements in terminals for electric leads
Inventor: PRIOR FRANCIS JOHN
IPC: H01R4/48
Filed: 1948-07-14
Abstract: 646,975. Two-part couplings; plug-boards. TRIX, Ltd. July 14, 1948, No. 18889. [Class 38 (i)] A terminal for a wire 9 comprises a head 1, Fig. 4, having a hole 2 and two or more tongues 3 connected to said head arranged to grip the wire when inserted through said hole. The tongues may be within a square tube 4 mounted on a panel, the ends 3a of the tongues being bent outwards to retain the terminal in the tube. Where the panel is of sufficient thickness to enable the ends of the tongues to be bent over it, the tube is dispensed with. A block of insulating material may be formed in two halves 10, 10a, Fig. 6, each with half of one or more square-section holes 11 formed therein so that when the two halves are placed together, one or more terminals are held in the respective holes. Fig. 8 shows a terminal block having a central recess 14, on either side of which sets of terminals are mounted in square recesses 15, adjacent tongues 3 being soldered together and the whole closed by a cover 18.
Patent GB-1210486-A (GB)
Title: Process for copying holograms
Inventor: NASSENSTEIN HEINRICH
IPC: G03H1/20
Filed: 1969-04-14
Abstract: 1,210,486. Holography. AGFA-GEVAERT A.G. April 14, 1969 [April 18, 1968], No. 18916/69. Addition to 1, 189, 928. Heading G2J. Holograms of low-spatial frequency are reproduced using as the original a focused-image hologram with an "off-axis" reference beam, only part of the visible spectrum being used as the copying light, the band width of such copying light being less than 150nm, preferably of 100nm. To achieve the desired band width coloured spectral filters or edge filters are used in conjunction with the light source.
Patent GB-385878-A (GB)
Title: Improvements in locomotive crank pin grinding and quartering machines
IPC: B24B5/42
Filed: 1932-07-05
Abstract: 385,878. Grinding crank pins. CHURCHILL MACHINE TOOL CO., Ltd., Broadheath, near Manchester, and ASBRIDGE, H. H., Claremont, Washway Road, Ashton-on- Mersey. July 5,1932, No. 18970. [Class 60.] Gauges.-A machine for grinding and quartering locomotive crank pins, which may be that described in Specification 323,437, [Class 60, Grinding or abrading &c.], is provided with a pair of centering gauges in the form of a V-shaped element c, pivoted at d, and having an arm k for connection to a pointer h working over a scale j. The axle a is supported by V-blocks b, adjustable as to height by the gearing indicated. Each guage c is carried by a slide m, and is pressed up to the work by a weight n, attached by wire, chain or the like to lug p, to which also is attached a hand lever o. The hand lever has a catch o<1> for engaging a corresponding element o<2> to maintain the gauge c out of operative position. In operation, the gauge is allowed to come into contact with the work under the action of the weight and the supporting block b is suitably adjusted.
Patent GB-281571-A (GB)
Title: Improved electric heating unit
IPC: H05B3/16
Filed: 1927-07-18
Abstract: 281,571. Ferck, R. July 18, 1927. Heating by electricity.-An electric heater for air, especially applicable for preventing condensation on show-room windows &c., consists of a tubular casing m with lower inlets p and upper outlets o for air and containing a resistance element. The resistance element consists of a wire c carried in slots l in insulating discs b mounted on a rod a and separated by distancepieces d. The slots l are disposed tangentially in the discs b and the slots in consecutive discs are directed oppositely as shown.
Patent GB-631039-A (GB)
Title: The manufacture of new wool dyestuffs of the xanthene series
IPC: C09B11/24
Filed: 1947-07-16
Abstract: Dyes are made by sulphonating 3.6-di-(o- or p-cyclohexylanilino)-fluorans which may contain methyl groups in the o- and p-positions of the anilino residues which are not occupied by cyclohexyl groups.  The products dye wool violet shades.  In examples, the following are sulphonated: (1) 3.6-di-(o- or p-cyclohexylanilino)-fluoran; (2) 3.6-di-(21-cyclohexyl-41-methyl-anilino)-fluoran; (3) 3.6-di-(21-methyl-61-cyclohexyl-anilino)-fluoran; (4) 3.6-di-(21.41-dimethyl-61-cyclohexyl-anilino) -fluoran.  The above 3.6-di-(o- or p-cyclohexylanilino)-fluorans may be obtained by condensing 3.6-dichlorofluoran with the appropriate amine.
Patent GB-687735-A (GB)
Title: Improvements in or relating to cork compositions and method of making same
IPC: C08L97/00
Filed: 1950-07-31
Abstract: Cork compositions are obtained by randomly interspersing a minor proportion by weight of preset cork granules (i.e. granules which have been pressed for such a time that they do not recover their normal size) with a major proportion of prime unset cork granules, coating the granules with a binder and setting under compression. The preset cork granules preferably constitute 10-35 per cent of the weight of cork.  The binder may be glue, phenol-formaldehyde, urea-formaldehyde, or resorcinol-formaldehyde and glycerine, diethylene glycol and para formaldehyde may also be added.  In numerical examples, the quantity of scrap from previous runs and binder to use in conjunction with a given quantity of new materials is determined so that the composition will remain substantially unchanged over a number of pressings.
Patent GB-401423-A (GB)
Title: An electrically-operated automatic ratchet-and-pawl mechanism
IPC: H02K7/065
Filed: 1932-07-05
Abstract: 401,423. Ratchet gearing. GREATOREX, A., 115, Upton Road, BRAHAM, G. W., 49, Palmar Crescent, and MELHUISH, E. C., 79, Upton Road, both in Bexleyheath, Kent. July 5, 1932, No. 19050. [Class 80 (iii).] A self-acting electromagnetic ratchet and pawl device comprises an armature c carrying a pawl d, a toothed wheel a fast on a spindle b, a spring-pressed pivoted lever g adapted to engage one arm p of a contact breaker r and an electromagnet m. When a current passes, the pawl is carried to the position d, in which it engages the lever g to cause the arm o to raise the arm p and so break contact. A spring n thereupon pulls back the armature and with it the wheel a through the agency of the pawl d. A continuous step-by-step automatic rotation of the spindle b is thus set up. A sliding bar armature may be used instead of an oscillating rotary one, the pawl being carried by it either directly or through the intermediary of a link. The lever g prevents over-running. A device for controlling the movement of the ratchet comprises a switch arm v, Fig. 4, rotated by the spindle b. In the resting positions of the ratchet, the arm contacts with one of the studs w. If one of these is disconnected, the ratchet will stop in the corresponding position. If a gapped switch 2 is connected as shown with the studs, the displacement of the ratchet can be controlled in varying amounts.
Patent GB-119360-A (GB)
Title: A New or Improved Fuel Vapouriser for Internal Combustion Engines.
Inventor: JOHNSTON HENRY WILLIAM
IPC: F02M1/16
Filed: 1917-12-27
Abstract: 119,360. Johnston, H. W. Dec. 27,1917. Starting.-A carburettor for starting purposes comprises a container D for light spirit, having a drip valve F, a cup N containing sponge or other absorbent material, a casing 0 having air inlets O<1> regulated by turning the container D, and a cock B leading to the induction pipe. In place of the filling-hole and cap M, the container D may have a perforated top and a screwed cover, and the cup N may be omitted.