baber/WOPTO huggingface dataset:
Patent GB-1429259-A (GB)
Title: Production of plaster
IPC: C01F11/46
Filed: 1973-10-10
Abstract: 1429259 Plaster of Paris AIR INDUSTRIE and SOC CHIMIQUE DES CHARBONNAGES 10 Oct 1973 [12 Oct 1972] 47418/73 Heading C1A Plaster of Paris is prepared from previously washed and dried phospho-gypsum (CaSO 4 . 2H 2 O formed as a by-product during the manufacture of phosphoric acid from phosphate rocks) by (1) dehydrating in a current of hot inert gas to a product containing at least 25% anhydride III and (2) contacting with a current of moist air to convert all the anhydride III into # CaSO 4À ¢H 2 O. Stage 1 may take 0À8-3 seconds in air at an inlet temperature of 260- 350 C. and containing 20-500 grams of water per kilogram of dry air, stage 2 may be 0À8-3 seconds at 350-450 C. Or, stage 1 may be 0À8-3 seconds at 600-800 C. and 200-500 grams water per kilogram dry air and stage 2 0À8-3 seconds at 20-50 C. and 60-95% R.H. The process may be carried out in tubular pneumatic driers.
Patent GB-1162952-A (GB)
Title: Ammunition, and Process for Forming Same
IPC: F41A9/45
Filed: 1966-07-06
Abstract: 1,162,952. Baseless cartridges. VICTOR COMPTOMETER CORP. 6 July, 1966 [7 July, 1965], No. 47450/68. Divided out of 1,162,951. Heading F3A. [Also in Division C1] A method of preparing a round of caseless ammunition which has a propellant portion comprising one-piece shaped porous body ignitable by surface contact with high temperature air, the method comprising mixing a uniformly wet doughy mass comprising nitrocellulose, a nitrocellulose solvent and a removable filler, forming the one-piece body of predetermined size and shape and attaching the body to a projectile. At least part of the filler is removed from the body before or after attachment of the body to the projectile. The wet doughy mass may comprise one part nitrocellulose, two to four parts solid particulate filler, e.g. potassium nitrate and the nitrocellulose solvent. As well as the above-mentioned " Salt System " examples of " Water System " and " Solvent System " propellants are disclosed. An inert mass may be also attached to the projectile.
Patent GB-1097638-A (GB)
Title: Device for separating the contents of eggs
IPC: A47J43/14
Filed: 1966-10-22
Abstract: 1,097,638. Egg yolk separators. A. COX. Nov. 22, 1966 [Oct. 22, 1966], No. 47470/66. Heading A4R. An egg yolk separator comprises a yolk receiving receptacle 19 supported from a frame 10 by an arm 20 beneath the lower, outlet end 18 of a funnel 15 hinged at 16 to the frame 10. The frame 10 comprises an L-section ring with radial arms 11 supported on the rim of a bowl 22 which receives the egg white draining over the rim 21 of the yolk receptacle 19. Handles 17 (and 13, Fig. 1) are provided on the funnel 15 and on one arm 11. A flange (14) on one arm 11 is used to crack an egg prior to emptying its contents into the funnel 15.
Patent GB-1089368-A (GB)
Title: Improvements in and relating to the production of shaped bodies of resilient material
IPC: B29C63/00
Filed: 1964-11-23
Abstract: Shaped articles are formed from a blank of resilient material, e.g. open celled polyurethane foam, by bending or deforming the blank to the required shape over a former, applying a coating of a denser resilient material, e.g. closed celled polyurethane foam, and finally setting the coating to retain the blank in its new shape.  The coating material is preferably deposited, from a liquid state, as by spraying.
Patent GB-1007043-A (GB)
Title: Improvements in or relating to clamps for attaching earth entering elements to driving elements
IPC: E21B19/12
Filed: 1962-12-17
Abstract: 1,007,043. Pile driving. SHELL INTERNATIONALE RESEARCH MAATSCHAPIJ N.V. Dec. 17, 1962 [Dec. 19, 1961; Aug. 9, 1962], No. 47548/62. Heading E1H. (Also in Division F2] A clamp for attaching an earth entering element 16 to the driving member 10 of a driver, the element being distortable to be clamped against backing surfaces, comprises a downwardly opening receiver section 12 adapted to receive the upper end of the element 16 and to provide such backing surfaces, a double-acting ram 61 including wedge-attaching means within the receiver section and wedges 69 attached to said means for relative sliding movement. The downward opening in the receiver section 12 is shaped for the pile 16, e.g. circular if the pile is tubular, as shown. The opening is adaptable for piles of different sizes by sleeves 12A. A cylinder 18 is fitted in the driving member 10 and houses a piston 26 from which upward and downward extensions 30, 28 pass through the upper and lower walls 19, 22 of the cylinder. The ram head 61 is bell-shaped and is attached to the lower end of a bolt 52 through a spherical washer 63 held in a concave seating 64 in the underside of the ram head. The bolt 52 is attached to the piston 26 by its head 51, the lower face of which is convex and rests in a concave seating 50 at the bottom of a bore 48 in the piston extension 30, a rib 53 engaging a spring-loaded locking device 54. Spaced around the tapered outer face of the ram head 61 are slideways 66 for wedges 69 which have inserts 71 that present knurled faces against the inside wall of the pile 16. The wedges are retained by plates 83 and a ring 75. In operation, the driving member 10 is lowered to engage the top of the pile 16, which it enters easily due to the provision of tapering projections 76 from a ring 67 on the bottom of the ram head and embracing it through a tapered sleeve 77 attached to the bottom of the receiver section 12, the nature of the seating of the bolt 52 allowing selfalignment. Pressure fluid is forced through a coupling 34 and duct 32 to the underside of the piston 26 and the consequent upward movement forces the wedges 69 outwards till they distort the pile 16 outwards into intimate .engagement with the receiver section 12, so clamping the pile securely to the driving member 10. To release the pile, pressure fluid is fed to the space above the piston 26 through another coupling and duct, Fig. 2 (not shown) and its descent frees the wedges, which are positively disengaged by the ring 75.
Patent GB-1073538-A (GB)
Title: Improvements in or relating to blanks for the fabrication of a weldable folding box
IPC: B65D5/20
Filed: 1964-11-24
Abstract: 1,073,538. Boxes; packages. STEIGER A.G., LITHOGRAPHIE, DRUCKEREI, CARTONNAGEFABRIK. Nov. 24, 1964 [Nov. 27, 1963], No. 47667/64. Headings B8C and B8P. A cardboard or like material blank for a box is coated on one side with a thermoplastic material and is shaped so as to have a rectangular base (1), Fig. 2 (not shown), two opposite rectangular sides (18, 19) folded-up from the base and two opposite triangular end walls (6, 7) similarly folded-up from the base. Fold lines (21) &c. between the side and end walls and fold lines along the triangular end walls form outwardly-bent flaps (14-17) along the edges of the latter, which engage the side walls and are welded thereto by pressure between two electrodes. Alternatively, flaps are provided along the edges of the rectangular sides instead of the triangular end walls, Figs. 4, 5 (not shown) these side flaps being welded to the inner edges of the triangular end walls. When the contents of the box are to be sealed-in under a reduced or increased pressure, e.g. with a protective gas, the joint between the two rectangular sides (18, 19) is at first left unsealed. A nozzle for air removal or replacement is then inserted in the slot thus formed, and following its removal the slot is sealed by two lateral welding electrodes.
Patent GB-1131059-A (GB)
Title: Improvements in or relating to an etching bath composition and method
IPC: C23F1/42
Filed: 1965-11-10
Abstract: 1,131,059. Etching. PHOTO ENGRAVERS RESEARCH Inc. 10 Nov., 1965 [16 Nov., 1964], No. 47710/65. Heading B6J. An etching bath composition comprises an aqueous solution of ferric chloride, a non-ionic surfactant stable in aqueous ferric chloride, a water-soluble thiourea or thiourea derivative which will form a cuprous-thiourea complex with cuprous ions, and an oil selected from saturated and unsaturated hydrocarbon oils and emulsified silicone oils which is immiscible with and non-reactive with the aqueous solution. The thiourea derivative used may be formamidine di - sulphide, formamidine disulphide hydrochloride, ethylene thiourea, thiourea chloride or mixtures thereof. Non-ionic surfactants specified are polyethylene glycol ethers (examples are given). The thiourea or derivatives may be present in amounts of 1-4 gms. per litre of the composition and the oil concentration may be 10-30 c.c. per litre of composition. The non-ionic surfactant is preferably 0À5-2À0% of the composition. The ferric chloride is preferably of concentration 20-48‹ BÚ. Etching is carried out by impinging the composition on the surface of a copper, copper alloy or nickel plate having at least a portion of its surface masked with a resist coating. The composition is preferably agitated prior to being impinged on the surface to ensure that the oil and aqueous phases are well emulsified. Reference has been directed by the Comptroller to Specification 886,249.
Patent GB-1072846-A (GB)
Title: Circuit arrangement including semiconductor device with a p-n-p-n structure
IPC: H03K17/73
Filed: 1963-12-03
Abstract: 1,072,846. PNPN transistor circuits. GENERAL ELECTRIC CO. Dec. 3, 1963 [Dec. 13, 1962, No. 47761/63. Heading H3T. One outer junction (3) of a PNPN transistor has a signal applied thereacross and the other outer junction (1), which has a lower gain than the first, has its outer layer connected to a load (RL) and its other layer connected to a source of bias impedance (RB). It is explained that as the bias impedance is reduced from infinity the transistor characteristics change from those of a 3-junction transistor to those of a gateturn off S.C.R. Accordingly the circuit changes from a linear amplifier of which the gain is varied by varying the bias impedance to bistable trigger circuit. The circuit may also be arranged to have three stable states.
Patent GB-1483458-A (GB)
Title: Production of injection or extrusion moulded articles
IPC: B29C48/03
Filed: 1973-10-12
Abstract: 1483458 Pigmenting extrusions or injection mouldings BRITISH INDUSTRIAL PLASTICS Ltd 3 Oct 1974 [12 Oct 1973] 47784/73 Heading B5A A method of making injection moulded articles or extrusions comprises roughly blending a pigment component with a thermosetting moulding material before, during or after supplying the pigment component and moulding material to the hopper of an injection moulding machine or extruder, effecting complete dispersion of the pigment component through the moulding material whilst in the injection moulding machine or extruder, and injection moulding or extruding the resultant pigmented thermosetting material. The pigment component may be a pigment per se or a masterbatch consisting of a pigment homogeneously blended with a thermosetting plastics composition. Examples are given of moulding materials and pigments used.
Patent GB-1363923-A (GB)
Title: Predrying moulded ceramic articles
Inventor: HALLIER B L D
IPC: F26B3/34
Filed: 1971-10-14
Abstract: 1363923 Microwave drying INTERNATIONAL STANDARD ELECTRIC CORP 14 Oct 1971 [21 Oct 1970] 47839/71 Heading F4G Wet ceramic articles 1 are pre-dried on their moulds 2 so that they may be separated from the moulds and handled without damage, by microwave heating in a water-saturated atmosphere in order to ensure uniform moisture distribution in the articles and hence avoid cracking and deformation. Water continuously evaporates from the articles 1 and condenses on the surfaces of the enclosure 22, since the low loss surfaces are not heated by the microwave radiation. Means (not shown) are provided for disposal of water from the surfaces and for air flushing of the enclosure 22 between batches of moulds. The enclosure 22 is part of a microwave hood 15 which is lowered hydraulically onto a conveyer belt 9 supporting the moulds 2 in batches. The hood encloses a cavity 21 (as large as possible for uniform distribution of microwave energy) fed by magnetrons 16 associated with mode stirrers (not shown). The ceiling of the enclosure 22 is formed by a dielectric plate 18 of low permittivity, and its height is variable by means of rods or ropes (not shown) extending through sleeved holes in the roof of the hood. The volume of the enclosure may be adjusted so that the energy required to saturate the enclosure at a temperature higher than ambient is equal to that required to evaporate the remainder of the required amount of water at that temperature.
Patent GB-1270075-A (GB)
Title: A tool for chipless working of gear wheels and for deburring the same
IPC: B23F19/04
Filed: 1970-10-08
Abstract: 1,270,075. Deburring glass. CARL HURTH MASCHINENUND ZAHNRADFABRIK. 8 Oct., 1970 [8 Oct., 1969; 5 Feb., 1970], No. 47985/70. Headings B3K and B3M. In a method of swaging gear teeth in a workpiece 21 by a gear rack, or gear-wheel tool 24, Fig. 1, the tool and workpiece are run in mesh so as to swage the teeth, thus forming burrs 34, 34<SP>1</SP>, at the roots of the teeth, Fig. 3, and due to the tool having sharp edges 43, 44, Fig. 5, formed at the intersection of the tool flanks and top lands 42 of the tool teeth, the burrs are removed. The machine comprises a column 10, Fig. 1, with an overhang 11, and a work carrier 12 vertically movable by a lead-screw 14 operable by an electric motor 15, or a hand wheel 16. A geardriven turntable may be provided between carrier 12 and a workpiece table 18. The teeth on the tool may be notched 45-48, Fig. 5, so as to provide chip breaking, and the notches may be staggered on adjacent teeth, or the notches may be arranged helically. In a modification, grooves 60, Fig. 7, may be provided.
Patent GB-1464566-A (GB)
Title: Gear hobbing machine
IPC: B23F23/12
Filed: 1974-11-07
Abstract: 1464566 Gear hobbing machines CHARLES CHURCHILL Ltd 23 Oct 1975 [7 Nov 1974] 48215/74 Heading B3K In a gear hobbing machine in which the hob 13 and gear blank 16 are simultaneously rotated about their axes at right angles to each other whilst the hob is traversed past the gear blank to effect the cutting operation, means is provided to move the hob axially at predetermined intervals at the completion of each cutting traverse to distribute wear on the hob and hence increase its operative life. To achieve this, a reversible hydraulic motor 17 mounted on the machine frame 12 drives, by way of a worm and wheel 20, 21 with clutch means 23, 25 and gears 27, 28, a screw spindle 29 which engages a nut 30 attached [to the hob carriage 31. A cam 35 at the end of the motor shaft 18 cooperates with a proximity detector probe 36 which transmits pulses which are used in the control of the fluid flow to the motor, a subtrative counter 38 being provided for counting the pulses to operate means for stopping the motor when the counter reaches zero. The motor is only actuated to axially displace the hob when it is separated from the gear blank and prior to the hob being fed to the blank for a further cutting traverse. Electrical controls provide the control of the sequence of axial displacements of the hob in the machining cycle. After a full displacement of the hob a button 43 is operated to actuate the circuit to cause the motor 17 to reverse its direction and return the hob to its original axial position.
Patent GB-1010340-A (GB)
Title: Improvements in automatic checkweighing apparatus
Inventor: ELPHICK GEORGE STANLEY
IPC: B07C5/28
Filed: 1962-12-21
Abstract: 1,010,340. Digital data storage devices; selective signalling. RANK-BUSH MURPHY Ltd. Dec. 19, 1963 [Dec. 21, 1962], No. 48299/62. Headings G4B and G4H. To prevent filled cans 10, Fig. 1, being rejected as of incorrect weight merely because of variations in the weights of the empty cans, the empty cans are weighed 5 to produce electric signals indicative of their variation in weight from their nominal weight, and the signals are delayed, via a shaft register 7, to cause appropriate compensating forces to be applied to the filled-can weighing unit 10. The shift register comprises a perforated tape 33, Fig. 2, into which balls are dropped in accordance with the data to be stored and micro-switches 35 for detecting stored data.
Patent GB-1083465-A (GB)
Title: Improvements in air-conditioning of vehicles
IPC: B60H1/00
Filed: 1964-12-01
Abstract: 1,083,465. Ventilating vehicles. REGIE NATIONALE DES USINES RENAULT. Dec. 1, 1964 [Dec. 13, 1963], No. 48845/64. Heading F4V. Air for ventilating a motor vehicle is passed by an electric fan 9 through a heat exchanger 4 into a hollow laterally extending girder 1 and/or through two tubular ventilators 6 mounted one at each side of the vehicle and extending through the girder 1. Air flow from the girder 1 to the vehicle interior is controlled by flap valves 20 and 22 and flow through the ventilators 6 to the interior is controlled by flaps 8. The fan draws air from a channel 14 fixed to the underside of the bonnet and communicating with a fresh air opening at the centre of the bonnet.
Patent GB-1462145-A (GB)
Title: High-pressure plunger pumps
IPC: F04B19/02
Filed: 1974-11-15
Abstract: 1462145 Reciprocating pumps PAUL HAMMELMANN MASCHINENFABRIK 15 Nov 1974 49515/74 Heading F1A A high-pressure pump comprises a reciprocable plunger 5 on which a spring-loaded sleeve 6 is slidably guided, the sleeve 6 moving out of engagement with a valve seat 16 during the suction stroke to allow liquid from a chamber 2 to enter the sleeve via opening 20, the movement of the sleeve being limited by a stop 11. On the discharge stroke of plunger 5, sleeve 6 engages seat 16, and liquid trapped in the sleeve is discharged via check-valve 16. Three pump assemblies may be connected in parallel in a common housing with their inlet chambers 2 inter-connected by passages 23 and their outlet chambers also inter-connected. The discharge valve and common valve seat may be mounted in a detachable head portion of the housing connected to the main housing by a holder (28), Fig. 3 (not shown), slidably engaged e.g. by a dovetail joint, and clamped by screw (32), eccentrics (37) Fig. 5 (not shown) or spring- loaded bolts (75), Fig. 10 (not shown). In Fig. 3, the discharge valve has a stern (50) guided in a piston (49) slidable in the outlet chamber and reacting against the head holder (28). In Fig. 9 (not shown), the plunger (62) is hollow and slidably receives the inlet valve sleeve (64, 65). A filter (83), (Fig. 10), may be provided in the sleeve opening, or surrounding the sleeve, (93) Fig. 11 (not shown). In Figs. 11 to 13 (not shown), the inlet valve sleeve (88, 88a, 88b) is slidably mounted in or on a stationary sleeve (87, 87a, 87b) surrounding the piston. In Figs. 14 and 15 (not shown), the plunger comprises a rod portion (112) surrounded by a sleeve (113) secured by a nut (118), a waisted portion of the rod portion defining an annular chamber (114) connected to the pumping chamber, so that during the discharge stroke, the pressure in the annular chamber deforms the sleeve outwardly to improve sealing.
Patent GB-1411126-A (GB)
Title: Electric storage batteries
IPC: H01M50/176
Filed: 1972-10-26
Abstract: 1411126 Moulding electric storage battery boxes JOSEPH LUCAS (AUSTRALIA) PTY Ltd 26 Oct 1972 [17 Nov 1971] 49523/72 Heading B5A [Also in Division H1] An electric storage battery box of thermoplastic material, with members such as terminal connectors or electrolyte level probes extending through the wall, has such members integrally cast-in during moulding of the box by using a mould with holes through its wall to receive the members. A reciprocable punch is brought down into the mould cavity, the gap between the punch and the mould wall defining the moulding cavity. The members are inserted through the holes in the mould wall and across the gap to abut the punch, and the moulding material is introduced to cast the box, examples of such materials being polypropylene or propyleneethylene copolymer. Preferably the members are each held in a reciprocating jig and are spaced from the sides of the hole in the mould wall, which is recessed, so that moulding material may form therearound, whilst the other end of the member may be provided with a sealing washer to abut against the punch. In an embodiment (Fig. 3) a terminal 6 of lead or lead alloy has flanges 7 and 8 and groove 9 around which the moulding material of the box 11 will form to lock in the terminal. A threaded nut 13 is cast into the terminal body and a jig 14 screws into it to locate it in the mould wall. The inner face of the terminal may have a boss 18 which carries a sealing washer 19, e.g. of a synthetic resin, several examples being given, which abuts against the moulding punch. If the washer is to be retained in the mould wall it is provided with bevelled shoulders 22, whilst if it is to be subsequently withdrawn the shoulders are bevelled inwardly instead to facilitate withdrawal. An electrolyte level probe similar to that described in Australian Specification 444,654 may be provided with a body portion having retaining flanges, as described above, and cast into a box by this method.
Patent GB-1326790-A (GB)
Title: Magnetic powder applicator
IPC: G03G15/09
Filed: 1970-10-19
Abstract: 1326790 Electro-photographic developing apparatus MINNESOTA MINING & MFG CO 19 Oct 1970 [20 Oct 1969] 49600/70 Heading G2H Magnetic powder is applied to an image bearing surface 16 by means of an applicator comprising a stationary shaft 25 of high magnetic permeability e.g. soft iron, a stationary array of sector shaped magnets 28-31 each comprising magnetic grains dispersed in a non-magnetic binder, and a rotatable, non-magnetic sleeve 33 e.g. of glass, aluminium or polymer. The magnets produce a field having radial components (dotted lines) and tangential components (solid lines) such that the field is generally radial adjacent a doctor blade 51 providing perpendicular tufts of powder for trimming; then tangential to encourage powder flow towards surface 16; radial for application to the image; tangential to encourage excess powder to flow away from surface 16; and finally sharply varies to mix the excess powder with that in the reservoir. If sleeve 33 is electrically conductive or has a conductive layer it may be electrically biased via a connector 44 and the  shaft 25. A scavenger roller (14), Fig.3 (not shown) comprising a stationary sleeve and rotatable shaft and magnetic sectors may be provided to remove any remaining excess powder from surface 16; this excess being returned to the applicator by an arrangement (67-69).