baber/WOPTO huggingface dataset:
Patent GB-792166-A (GB)
Title: Improvements in or relating to methods of treating silicon
IPC: C30B13/00
Filed: 1956-07-20
Abstract: <PICT:0792166/III/1> <PICT:0792166/III/2> <PICT:0792166/III/3> Extremely pure silicon, suitable for use in semi-conductor devices, is prepared by passing a neutral gas, as defined, e.g. hydrogen, helium, rayon and nitrogen, containing water vapour, the partial pressure of the water vapour being desirably below 25 mm. Hg, preferably 4.5-9.8 mm. at between 0 DEG  C. and 11 DEG  C., either over or through molten silicon, between 1420 DEG  and 1550 DEG  C., combined with the techniques of "zone-melting" or "normal-freezing." The impurities removed are boron and some aluminium.  If a vacuum is used, phosphorus is also removed. Thus, in one embodiment of the invention (Fig. 1) hydrogen containing water vapour at 10 DEG  C. is introduced and withdrawn at 14.  In the tube 11 is supported a silicon rod 16.  This is preferably in two parts, the lower portion consisting of a single crystal of pure silicon, obtained previously, and the upper portion consisting of the silicon to be purified.  The silicon is first preheated at the junction of the two parts and then heated by the induction heating coil 19 (21 in Fig. 2), which may have a focusing device 22.  The silicon rod 16 in the tube 11 is slowly lowered by the device 113 so that the molten zone slowly progresses up the silicon rod 16.  In this way a rod-like single crystal of pure silicon is obtained.  Other embodiments are illustrated in Figs. 3 and 4.  In Fig. 3 the silicon in the form of a powder compressed into lumps is in a silica boat 301 contained in a tube 32 which is on an inclined plane, and the silicon is heated by a plurality of induction heating coils 31, while the furnace is given a cyclic reciprocal motion by the trippable motor 38 and return spring 39, thus obtaining uniform purification of the silicon.  Hydrogen may either be introduced by tube 303 at one point, or a perforated tube (not shown) extending the whole length of the boat may be used.  In Fig. 4, the silicon is melted in a crucible 48 by coils 42, and hydrogen containing water vapour is both bubbled through the melt by tube 437 and passed over the melt by tube 433.  Solid silicon is added to the melt intermittently from 438 through tube 435 and mixed with the molten silicon using the tamp 436.  The melt is allowed to solidify from the bottom upwards by raising the coils 42 by the device 44.  Fig. 5 (not shown) is a suitable form for the top of the apparatus of Fig. 2, and permits fine adjustment of the length of the silicon rod, by means of a screw thread.  The hydrogen for the process is conveniently prepared by passing the gas over a supported catalyst to oxidize oxygen impurities to water, then through a charcoal trap at liquid nitrogen temperature to adsorb remaining contaminants, and then through a water bubbler, conveniently at 10 DEG  C. to saturate the gas with water, and then through a condensing trap, conveniently at 0 DEG  C., to remove excess water vapour. Specifications 713,597, [Group II], and 774,270 are referred to.
Patent GB-1000373-A (GB)
Title: An improved worm extruder
IPC: B29C48/395
Filed: 1962-06-12
Abstract: 1,000,373. Screw extruders. BARMER MASCHINENFABRIK A.G. June 12, 1962 [June 12, 1961], No. 22563/62. Heading B5A. A screw extruder is provided with a mixing device comprising an inner series of baffle discs 4 and spacing discs 5 mounted for rotation on an extension 1 of the screw 3, and an outer series of baffle discs 8 and spacing discs 9 situated in a holder member 10 which is secured against rotation in the housing 13 but is capable of free axial displacement therein.
Patent GB-737052-A (GB)
Title: Improvements in conveyors
IPC: B65B25/06
Filed: 1953-08-17
Abstract: 737,052. Rotary conveyers and elevators. FORGROVE MACHINERY CO., Ltd., and PARKER, M. Aug. 3, 1954 [Aug. 17, 1953], No. 22601/53. Class 78 (1). In a conveyer for use in wrapping machines, bag forming and filling machines and machines for delivering weighed quantities of goods of the kind comprising a plurality of articlemoving attachments all arranged to travel in the same path in relation to a series of stations at .which operations are performed on the articles, the number of article-moving attachments is greater than the number of stations and the attachments, or groups of them, are driven individually. The conveyer shown in Fig. 2 comprises three die boxes E<SP>1</SP>, E<SP>2</SP> and E3, which are mounted to rotate independently of each other around a common centre 10, and two stations D<SP>1</SP>, D<SP>2</SP>. A box at station D<SP>1</SP> is filled with a plastic substance which is ejected at station D<SP>2</SP> into grippers 11 forming part of a conveyer. Each die box is moved intermittently by similar mechanism. The mechanism for the box E<SP>3</SP> only is shown in Fig. 2 and for all the boxes in Fig. 4. A pivoted link 22 connects a stud 23 on the die box to a runner 20 moving in a cam track 21. The runner 20 is mounted in a link 19 which is pivoted to one end of a lever 14. This lever carries a runner 16 which engages a cam track 17. The other end of the lever is pivoted at 18 to one arm of the threearmed member 15. This member is rotated continuously around the centre 10 at a constant rate of one third of the machine speed by gearing (not shown). The cam track 21 is shaped at the part 24 to form an arc of a circle of radius equal to the link 22. The die box does not move while the runner 20 is in this part of the track. The period of rest is extended by forming the part 25 of the track 17 in such a manner that the runner 20 is caused to linger in the part 24. A reciprocating plunger 45, Fig. 8, working in each die-box is moved to the left during filling of the box at station D<SP>1</SP> and to the right to discharge the shaped block at station D<SP>2</SP>. The plunger is reciprocated by a cam 46 mounted rotatably on the shaft 10 and having a track 48 to receive a runner 47 on the plunger. A lever 49 fixed to the cam is connected by a link 50 to an arm 51 which is pivoted at 52 and carries a follower 53 which coacts with a track (not shown) in a continuously rotating cam 54. The movement of the plunger is limited by an adjustable cam 55.
Patent GB-587561-A (GB)
Title: Improvements relating to the refining of hydrocarbon liquids
IPC: C10G19/06
Filed: 1939-08-05
Abstract: Acid reacting organic substances and particularly mercaptans are washed from petroleum distillates by means of sulphonates in alkaline solution, the sulphonates comprising products prepared from the acid tars obtained in the treatment of petroleum hydrocarbons, other than benzene, toluene and xylene, with sulphuric acid in the production of white oils and containing substances derived from the acid tars &c. resulting from their manner of preparation.  An acid tar specified comprises a product derived from a distillate cut of 120-270 DEG C of Iraq crude oil treated with oleum.  The sodium or potassium sulphonates are prepared from the acid tars by diluting with water, neutralizing with lime, calcium carbonate, lead or barium hydroxides, to precipitate insoluble sulphates and form soluble sulphonates and then by double decomposition with sodium or potassium carbonate producing the sodium or potassium sulphonates in solution. Alternatively, the sodium or potassium sulphonates may be produced directly by means of NaOH or KOH.  The sulphonate solutions obtained are washed with petroleum distillate, white spirit &c., evaporated to the desired concentration and finally diluted with caustic alkali solution.  The petroleum distillates are preferably preliminarily washed with caustic soda to remove H2S and the lighter mercaptans. The refining is preferably completed by washing with sodium plumbite or copper chloride. The sulphonate reagent may be regenerated by steaming.  Cracked or reformed distillates may be so refined.
Patent GB-378644-A (GB)
Title: Silencer for engine exhaust
IPC: F01N1/08
Filed: 1931-08-13
Abstract: 378,644. Exhaust silencers. DYKE, J. W. VAN, Barclay Apartments, 18th Square, Philadelphia, U.S.A. Aug. 13, 1931, No. 22892. Convention date, Aug. 14, 1930. [Class 7 (ii).] The silencer comprises a casing 1 divided into a number of compartments by partitions 10 each having an aperture 11 around which are disposed a number of twisted strips 14. These strips, which are spaced transversely from one another and from the casing, are twisted through approximately 180‹, and are secured at their other ends to concave deflecting discs 15. The gases, which enter at 3, pass between the discs 15 and the casing, and meet the strips at an angle to the general direction of gas flow. The outlet end of the casing 4 is unobstructed, and the last partition 20 has an extension 22 which supports a disc 23. The casing is surrounded by an air jacket 5.
Patent GB-1221641-A (GB)
Title: Improvements relating to teaching machines
Inventor: HENDERSON ANDREW WILLIAM
IPC: G09B5/02
Filed: 1968-10-25
Abstract: 1,221,641. Making wiring harnesses. PLESSEY CO. Ltd. 23 Oct., 1968 [28 May, 1965], No. 22897/65. Heading B3A. [Also in Divisions B4-B5] Apparatus for facilitating the manual assembly of a wiring harness comprises a wiring board 8 carrying pins 13 and supported on an easel (Fig. 1, not shown) or on a bench 6 (Fig. 2), at least a portion of the work surface forming a screen on which are projected in sequence transparent slides showing respectively the positions in which pins are to be inserted, and the colour and lay-out of each wire to be assembled. The projector 11 is semi-automatic and controlled by the operator's switch 23. Slides may include additional visual instructions and the projector may be associated with apparatus for transmitting oral instructions. Back projection may be employed.
Patent GB-739118-A (GB)
Title: Improvements relating to insulating bodies comprising cork meal
IPC: C08J9/00
Filed: 1953-08-20
Abstract: A heat insulator consists of cork meal treated with cellular polystyrene or polyvinyl chloride, the cells of which are preferably closed and which fills the cavities between the particles of cork. Porosity may be obtained by adding ammonium bicarbonate to the mix and subsequently heating in a mould. Alternatively the binding agent and an added agent is heated under pressure so that the evolved gas cannot escape, and after cooling the mass is comminuted, mixed with the cork, and the whole reheated.ALSO:A heat insulation body consists of cork meal treated with a binding agent which comprises cells which are preferably closed, the binding agent filling the cavities between the particles of cork.  The preferred binding agent is pitch or bitumen and the porosity may be effected by the addition of ammonium bicarbonate with subsequent heating to produce gas whereupon the whole is moulded.  Alternatively the binding agent and an added raising agent is heated under pressure so that the evolved gas cannot escape, and after cooling the mass is comminuted.  This mass is subsequently mixed with the cork and the whole re-heated.
Patent GB-295393-A (GB)
Title: Improvements in or relating to electric transformers
IPC: H02M7/06
Filed: 1928-08-09
Abstract: 295,393. Fabinger, F., and Ceskomoravska - - Kolben - Danek Akciova Spolecnost., Aug. 12, 1927, [Convention date]. Drawings to Specification. Polyphase transformers. - In transformers in which one primary winding is associated with two or more secondary windings feeding a corresponding number of mercury vapour rectifiers, if all the windings are distributed over the whole length of the core limbs, the voltage drop from no load to full load with only one rectifier in use is halved as compared with the drop when both rectifiers are in use. When the two secondary windings are each distributed over half the core limbs and interleaved with opposite halves of the primary, however, the drop with one rectifier in use is greater than when both are in use. According to the invention, the two secondary windings are distributed over such proportions of the core and interleaved with such proportions of the primary that the voltage drop at full load is the same with one rectifier in use as with both in use.
Patent GB-1182874-A (GB)
Title: An Improved Figure Toy.
IPC: A63H3/20
Filed: 1968-05-15
Abstract: 1,182,874. Figure toy. MATTELL Inc. 15 May, 1968 [15 May, 1967], No. 23143/68. Heading A6S. A toy doll comprises a torso to which are attached legs 2, the legs being interconnected by means of rods 8 which are each journalled in elongated slots 16 of the T-shaped rocker 15, such that when a crank inserted in a slot 17 of the stem of the T-piece is turned, the rocker pivots about a fixed stem, causing the legs to execute a "walking" action, the crank being driven by an electric motor and gear train (not shown) which are actuated only when an eccentric portion 26 of the shaft 27 is in such a position as to contact the elements 24. The end of the shaft is attached to an arm of the doll, so that only when the arm is in an upraised position is the motor actuated, so that the doll simulates a child learning to walk. In an alternative embodiment for producing walking motion, the legs 35 are fixed to the lower ends of rods 36, which rods are located in slots 42 for forward and backward motion, the upper ends of the rods being pivotally mounted to opposite cranks 43, and the rods being mounted for pivoting on pins located in slots 44 in the rods, so that the rods may be driven via cranks 43 by motor M'.
Patent GB-1129766-A (GB)
Title: Continuous casting apparatus
IPC: B22D41/14
Filed: 1966-05-24
Abstract: 1,129,766. Valves. AMERICAN SMELTING & REFINING CO. 24 May, 1966 [4 June, 1965], No. 23223/66. Heading F2V. [Also in Divisions B3, C3 and F4] In a continuous casting apparatus a feed tube 19 extends from a container 11 and houses a movable valve means 18 having an overall specific gravity less than that of the metal being cast so that it is buoyant in the liquid metal and rises and falls as the free surface 16 of the molten metal in the mould 10 varies and controls the flow of molten metal to the mould. A bottom wall 24 of a valve member 22 of the movable valve means co-operates with a valve seat part 17 of the feed tube 19 to control the flow of molten metal; passageways 25, 27 allowing the molten metal to enter the mold 10. The feed tube 19 and movable valve means 18 or parts thereof may be made of the same material or may be different; for casting copper base alloys a clay-graphite material is preferred. Other suitable materials would be a chromiumaluminium cermet, a hydrated magnesium silicate steatite, Carborundum, Alundum (Trade Marks), magnesia, zirconia, and chromite. The passageways 27 may be arranged so that the flow therethrough imparts a rotary motion to the movable valve means 18. Parts of the movable valve means may be hollow and made from a material having a specific gravity higher than that of the metal being cast. During casting the surface of the molten metal may be covered with layers 34, 35 of discrete particles of carbonaceous material such as flake graphite, lamp black or pulverized anthracite. The container 11 may have a plurality of valves for feeding a plurality of moulds.
Patent GB-681902-A (GB)
Title: Improvements in or relating to encoding information on punched record cards and other equivalent media
IPC: G06K19/00
Filed: 1948-09-03
Abstract: 681,902. Statistical apparatus. MOOERS, C. N. Sept. 3, 1948 [Sept. 17, 1947], No. 23256/48. Drawings to Specification. Class 106 (i). Relates to the compilation of information for statistical purposes on a collection of units of a medium for sorting by a mechanical electrical or optical selecting device, the units comprising punched or slotted cards, a magnetic record, a perforated tape or a film strip having transparent spots. Each unit is associated with one complex idea made up of several selective characters. Each unit has a field of positions for indicia, e.g. punch holes. According to the invention, each selective character is identified by a code pattern of indicia randomly distributed over the field and these patterns are superimposed on the units in making up the collection. In making a selection, unwanted extra units may be obtained but, since the system was set up by random means, the theory of statistics can be applied both in making up the system, to keep the number of extra units small and in interpreting numerical results to give an estimate of the number of extra units obtained. The pattern for an idea not likely to be selected by itself may have fewer indicia than one likely to constitute a selection. The Specification describes fully the theory of the invention. The statistical cards used may be formed as described in Specification 203,734, [Class 106 (i)]
Patent GB-426993-A (GB)
Title: Face mask of rubber for cosmetic purposes and method of manufacture
IPC: A45D44/22
Filed: 1934-08-13
Abstract: 426,993. Face-masks. WIPLER, C., 17, Pilgramgasse, Vienna. Aug. 13, 1934, No. 23377. Convention date, Aug. 11, 1933. [Class 131] A face-mask for cosmetic purposes is made of thin vulcanized rubber moulded to fit exactly the shape of the face.
Patent GB-1165107-A (GB)
Title: Improvements in or relating to Pneumatic Removal of Waste from Carding Machines
IPC: D01H11/00
Filed: 1968-05-16
Abstract: 1,165,107. Cleaning carding-engines. LUWA A.G. 16 May, 1968 [17 May, 1967], No. 23428/68. Addition to 1126254. Heading DIF. In apparatus for pneumatically removing waste from the space beneath a carding machine according to the parent specification, the suction chamber comprises a housing of curvilinear (approximately spiral) cross-section uniform along the length thereof, and the funnel or inlet passages (of rectilinear crosssection) leading into the housing is defined in part by a side wall longitudinal to the chamber and in part by a longitudinal curved edge portion of the housing spaced from the wall. Impurities entrained by a swirling air flow in the housing are removed from the area of the carding frame through a duct. Two contradirectional swirling air flows may be produced in the housing by leading two suction pipes obliquely or inclinably thereinto, the flows merging into a common suction orifice.
Patent GB-1244598-A (GB)
Title: Energy absorber
IPC: B62D1/11
Filed: 1970-05-14
Abstract: 1,244,598. Collapsible steering columns. GENERAL MOTORS CORP. 14 May, 1970 [27 May, 1969], No. 23461/70. Heading B7H. [Also in Division F2] An energy-absorbing deformable pot 32 for inclusion in a motor vehicle steering column assembly (Fig. 2, not shown), comprises a waisted tube whose spaced annular end portions are joined by first and second sets of strips 42, 44 alternating circumferentially around the tube, the strips 44 of the second set extending, at the waist, to a lesser radial distance from the central axis of the tube end portions than the strips 42 of the first set. Adjacent strips are separated by longitudinal slits 40 which widen at the waist. During axial collapse of the pot the strips buckle at the waist such that each strip 42 is overlapped partly by a pair of adjacent strips 44. The strips make interference engagement which results in strips 44 being placed in tension due to intrusion into their folds of strips 42, while strips 42 are correspondingly placed in compression. The pot may be disposed between the steering wheel (16) and shaft (38), or concentrically with the shaft.
Patent GB-1026399-A (GB)
Title: Improvements in or relating to the continuous casting of metal
Inventor: COLLINS DONALD LOUIS WILLIAM
IPC: B22D7/10
Filed: 1963-06-12
Abstract: 1,026,399. Continuous casting-machines. ALUMINIUM LABORATORIES Ltd. June 10, 1964 [June 12, 1963], No. 23468/63. Heading B3F. In a continuous casting method, particularly for A1, the mould wall above the level at which solidification commences is lined with heat insulating material in thin flexible sheet form. The material may be paper-like fibrous aluminium silicate.
Patent GB-204851-A (GB)
Title: Improvements in methods of soldering metals
IPC: B23K3/08
Filed: 1922-08-30
Abstract: 204,851. Golby, F. W., (Nelson, P. N.). Aug. 30, 1922. Soldering.-In soldering together the ends of a work piece, particularly jewellery, optical and dental parts and parts of typewriters, the solder, placed on the joint is melted by a pair of electrodes, one of which engaging the joint, is made of high resistance material such as carbon so as to localize the heat at the joint, and the other of which, engaging the work adjacent the joint, is made of lower resistance material such as copper. In soldering finger-rings so as to avoid injuring the settings, enamel work or fretwork thereon, the ring is held in one hand and the solder fused by applying to the work at the joint a carbon electrode 20 and near the joint a pair of tweezers 28 or a tapered copper rod, connected to the terminals of the secondary of a transformer. The electrodes may be carried on a bench 11, having a housing for the transformer. The electrode 20 which engages the work with a relatively small contact area is secured by copper clamping members 19<1> to a copper stem 21 connected by a wire to the transformer secondary, and may have a round or flattened point or a chisel edge. The low resistance electrode which engages the work with a relatively large contact area is carried by a flexible wire 27 secured to the binding post 26, which is connected by a wire to the other terminal of the transformer secondary. When a copper rod is used it is inserted in the ring and may thus be used for rings of different sizes. Reference has been directed by the Comptroller to Specification 16452/15.
Patent GB-296983-A (GB)
Title: Improvements in or relating to machines for cutting tire tread or like bands
IPC: B26D1/00
Filed: 1928-08-17
Abstract: 296,983. Firestone Tyre & Rubber Co. (1922), Ltd., (Assignees of Stevens, W. C.). Sept. 10, 1927, [Convention date]. Traversing - cutter machines.- In a machine for cutting tyre threads or like bands into lengths with a skived edge for splicing, a disc knife 19 with a geared electro-motor 20 is mounted on an inclined carriage 17 reciprocated transversely of the web from a crank 24. The web 14 and the knife 19 are traversed alternately. The web 14 is fed by conveyers 12, 13 driven from a clutch 29 on a power shaft 27. An adjustable wheel 30 trails upon the material and, when a predetermined length of web has passed, a cam 33 actuates a rod 35 to operate the clutch 29 to stop the conveyers and to operate a clutch 25 for moving the knife 19. A pivoted clamp 47 is raised by a projection 45 on the carriage when the material is fed. In a modification a series of disc cutters with overlapping cutting strokes is used for severing wide material.