baber/WOPTO huggingface dataset:
Patent GB-1409658-A (GB)
Title: Flat beam intruder detection device
IPC: G08B13/24
Filed: 1971-11-12
Abstract: 1409658 Intruder alarms SHORROCK DEVELOPMENTS Ltd 13 Nov 1972 [12 Nov 1971] 52549/71 Heading G4N An intruder detection device comprises a U.H.F. transmitter receiver arrangement having similar flat beam type directional aerials 12, 13 with overlapping radiation patterns and signal processing circuitry 15-17, 19 arranged to trigger an alrm 18 only when predetermined thresholds in respect of extent of received signal amplitude change and rate of signal amplitude change are together exceeded for a duration greater than a reference period. In operation, the transmitter 11 has its output frequency modulated by a source 10 and the modulation is recovered by Schottky diode 14 and applied via an amplifier 15 to a level detector 16. The level detector 16 detects positive or negative changes in amplitude of the received signal. The amplifier 15 is associated with a A.G.C. circuit 19 having a large time constant so that the amplifier 15 is insensitive to slow signal amplitude changes resulting from frequency drift or attenuation of the signal path by rain, snow, fog &c, Finally, the alarm 18 is activated only if the input signal rate exceeded the threshold rate determined by amplifier 15 and A.G.C. circuit 19 and if the change in amplitude was large enough to be detected by detector 16 and existed for a period determined by delay 17. When the alarm 18 is actuated, the A.G.C. time constant is reduced to readjust the mean level to which the system is sensitive. The system may use a single horizontal beam for blanket coverage or three or more vertical beams for fencing.
Patent GB-1515170-A (GB)
Title: Process for preparing alkali metal orthophosphates
IPC: C01B25/30
Filed: 1975-12-24
Abstract: 1515170 Na orthophosphate; NH 3  OLIN CORP 24 Dec 1975 [30 Dec 1974] 52823/75 Heading C1A NH 3 -free solution of Na orthophosphate and, separately, NN 3  are prepared by (a) introducing aqueous monoammonuim phosphate into vertical first vapour-liquid counter current contact column in which aqueous Na 2 CO 3  is introduced at a level below that of phosphate in (a) at 125-250F and so that the Na:P mole ratio is 0À5 to 1À5, (b) removing overhead NH 3 -free CO 2  and a bottoms product of Na ammonium phosphate, the latter being contacted with NaOH to give a reaction mixture with Na:P mole ratio of 1-2, (c) stripping in a second vapour-liquid contact column, NH 3  from the mixture at 130-500 psig and recovering the Na orthophosphate having Na:P mole ratio as in (b).
Patent GB-1416518-A (GB)
Title: Fastening arrangements
IPC: B29C65/34
Filed: 1971-11-16
Abstract: 1416518 Securing threaded fasteners FERRANTI Ltd 15 Nov 1972 [16 Nov 1971] 53097/71 Heading F2H [Also in Division B3] A fastener such as a stud 15, bolt (Fig. 4a) or nut (Fig. 4b) is permanently secured as by welding and brazing to a central raised portion of a woven wire mesh, e.g. a gauze 11. The fastener and the mesh are preferably both of metal so that the sheet can be embedded in a member 27 of thermoplastic material, e.g. a styrene, by the application of heat to the fastener, the raised mesh portion preventing direct heat conduction between member 27 and the fastener. In this case the mesh is preferably of nickel plated mild steel wire and has 26 x 26 strands per inch.
Patent GB-1448985-A (GB)
Title: Release coatings
IPC: B05D5/08
Filed: 1972-11-17
Abstract: 1448985 Release coatings PRESTIGE GROUP Ltd 30 Aug 1973 [17 Nov 1972] 53097/72 Heading B2E A coloured release coating is obtained on an article by applying a pigmented synthetic resin basecoat to the article, partly curing it sufficiently to allow adherence but to prevent cross transfer of the pigment to a top coating of unpigmented silicone resin which is then applied over it, and fully curing the two coatings. The basecoat may contain an epoxy resin or a styrene-maleic anhydride resin, and it may also be of a silicone resin material which may be the same as that used in the top coating. The substrate may be a kitchen utensil. The substrate may be first cleaned with a suitable organic solvent or by a water base cleaning. The top or both coatings may include additional additives such as an additional silicone resin having better release properties than the basic resin material. The method may be used for coating articles of tin and aluminium.
Patent GB-1147679-A (GB)
Title: Improvements in or relating to machines for pressing uniforms
Inventor: MCMILLAN JERRY NEIL
IPC: D06F71/18
Filed: 1966-11-29
Abstract: 1,147,679. Presses. J. N. McMILLAN. 29 Nov., 1966 [21 Feb., 1966], No. 53310/66. Heading D1A. A machine for pressing uniforms comprises a manikin 1 having shoulder supporting portion 20, garment spreaders 9, 10 pressing bucks 7, 8 and a fan in a heat exchanger 6 for blowing warm air through a hollow base 2 upwardly through the manikin 1. The bucks 7, 8 and spreaders 9, 10 are moved by pneumatic pistons and the bucks may move downwardly as pressure is applied to remove horizontal creases. Steam chambers are provided in the front and new portions of the manikin and to the presser 7. The neck and shoulder portion 20, 20a are heated by either steam or dry air.
Patent GB-1329316-A (GB)
Title: Process for automatic control of crystal size distribution
IPC: C01D7/40
Filed: 1971-11-19
Abstract: 1329316 Controlling crystal sizes KERRMcGEE CHEMICAL CORP 19 Nov 1971 [8 Dec 1970] 53902/71 Heading B1G Crystals, e.g. of sodium carbonate monohydrate, are continuously produced of a desired size by maintaining a relatively constant ratio between respective flow rates, from a slurry contained in a crystallizing zone by withdrawing from the zone a first slurry and classifying it into a second slurry containing small crystals which is returned to the zone, and a third slurry containing large crystals which are recovered in a crystal separator, and the mother liquor returned to the crystallizing zone and withdrawing a fourth slurry from the zone. The flow rates may be controlled by use of venturi tubes, calibrated orifices or magnetic means. The classification of the slurries may be effected by cyclones, screens, or settlers. The Specification includes a flow diagram of a continuous process for the conversion of anhydrous sodium carbonate to sodium carbonate monohydrate crystals.
Patent GB-1472440-A (GB)
Title: Fuel gas
IPC: C10L3/00
Filed: 1975-12-01
Abstract: 1472440 Fuel gas IMPERIAL CHEMICAL INDUSTRIES Ltd 1 Dec 1975 [13 Dec 1974] 53944/74 Addition to 1320905 Heading C5E A fuel gas comprises by volume:  5-39% methylacetylene and/or allene; 30À5-90% propane; 0-29À5% propylene; 0-20% C 4  hydrocarbons; and less than 1% (if any) of acetylene. The gas is used with oxygen to produce the flame in metal working processes such as cutting, scarfing and brazing.
Patent GB-1417544-A (GB)
Title: Catalysts containing platinum and rhodium
IPC: B01D53/94
Filed: 1971-11-22
Abstract: 1417544 Exhaust gas treatment catalysts JOHNSON MATTHEY & CO Ltd 17 Nov 1972 [22 Nov 1971 (2)] 54038/71 and 54039/ 71 Heading B1E Catalysts comprise a support of inert material; a deposit of a refractory oxide applied to the support, at least 5 wt% of the refractory oxide being scandium, yttrium and/or a lanthanide oxide; and a deposit of a mixture or alloy of platinum and rhodium applied to the refractory oxide, the rhodium constituting less than 20 wt% of the total metal content of the mixture or alloy. The inert material may be a metal oxide, silica, a silicate, an alumino silicate or a transition metal boride, carbide or silicide and is preferably in the form of a cellular structure or honeycomb. The refractory oxide may be applied to an inert secondary support before application to the support of inert material. Catalysts comprising various platinum/rhodium alloys deposited on a refractory oxide layer comprising alumina or magnesia and neodymium oxide on a ceramic honeycomb support are described while examples to show the effectiveness of the platinum/rhodium alloys in the oxidation of carbon compounds and reduction of nitrogen oxides in waste gases use the alloy supported on ceramic honeycombs washcoated with alumina or on a ceramic honeycomb.
Patent GB-1310800-A (GB)
Title: Method and apparatus for vapourizing cryogenic liquids
IPC: F17C9/02
Filed: 1971-11-23
Abstract: 1310800 Revaporizing cold liquefied gas BLACK SIVALLS & BRYSON Inc 23 Nov 1971 [3 Feb 1971] 54353/71 Heading F4P Revaporization of cold liquefied gas, e.g. natural gas, is effected by passage of a stream thereof through first and second banks 60, 62 of heat exchanger tubes 52, 54 immersed in a body of heated and continuously vaporized liquid 80, e.g. water confined within a cylindrical vessel 20, and the partly vaporized liquid methane is then passed through a third bank 64 of tubes located in the vapour space of vessel 20 resulting in condensation of the water vapour and complete vaporization of the liquid methane which is discharged at 50. As shown the water 80 is heated by a V- shaped firebox 38 containing hot products of combustion of a natural gas burner 40. In the event of failure of the burner or fuel supply thereto resulting in cooling of the water 80 to just above freezing point the water is automatically dumped through a duct 96 having a temperature controlled valve (94), Fig. 1 (not shown).
Patent GB-1384709-A (GB)
Title: Low-frequency power amplifier
Inventor: ROMANO A
IPC: H03F3/18
Filed: 1972-02-05
Abstract: 1384709 Low frequency amplifiers ATES COMPONENTI ELETTRONICI SpA 5 Feb 1972 [5 Feb 1971] 54425/71 Heading H3T A quasi-complementary negative feedback amplifier has a "current mirror" T 4 , T 5 , T 10  for stabilizing the D.C. output level at about half the level of the supply voltage V cc , and terminals 12, 4 and 3 to which connections may be made to provide boot-strap feedback from the output of the amplifier to the driver stage. As shown, when the boot strap capacitor C1 is inserted and terminal 3 connected to the supply voltage V cc  substantially the whole collector voltage swing is available at the output terminal but for lower output powers the boot-strap capacitor and the connection to terminal 3 may be omitted in which case the output voltage swing is reduced by the bias voltage developed across diode D 1  end D 2 . A negative feedback resistor R8 is provided and the current through this is determined by a current mirror arrangement T4, T5, T10 supplied from resistors R 6 , R 7  such that the quiescent output voltage of the amplifier is half of the supply voltage. Preferably R 6 , R 7  and R 9  are of equal value. Where T 2  is a lateral transistor of low gain the effect of its base current on the quiescent output level is offset by making transistor T 3  in a similar fashion. Diodes T 18 , T 19  and T 20  maintain the potential at the emitter of T 16  above that of the collector of T 22 . The diodes may be made in the form of transistors with their collector and base electrodes shorted, D<SP>1</SP> and D<SP>11</SP> may be replaced by a resistor and transistors T 4  and T 5  may each have an emitter resistor to match their characteristics (Fig. 2, not shown).
Patent GB-1286547-A (GB)
Title: Housing for a hot and cold mixing valve
Inventor: LINS ALBERT
IPC: F16K11/00
Filed: 1969-11-12
Abstract: 1286547 Valves A LINS 12 Nov 1969 [22 Nov 1968] 55343/69 Heading F2V A housing 1 for a hot and cold water mixing valve device comprises two inlet stub pipe connections 5 for the hot and cold water respectively. These inlets communicate through an intermediate chamber 6 with a main valve chamber 7. The intermediate chamber is provided in a boss 8 which has a bore opening to the exterior for the insertion of a filter 11 and an auxiliary valve 10 which closes automatically to shut off the inlet whenever the filter is being renewed. The boss is arranged at an angle preferably of 60 degrees as shown or this angle may be increased up to 90 degrees. This arrangement enables the housing to be positioned so that any dirt will fall out as the filter is removed.
Patent GB-1321759-A (GB)
Title: Stopper mountings for bottom-pouring metallurgical vessel
IPC: B22D41/20
Filed: 1971-11-29
Abstract: 1321759 Operating ladle stopper rods SULZER BROS Ltd 29 Nov 1971 [4 Dec 1970] 55343/71 Heading F4B A stopper rod 7 in a ladle 1 is actuated by a toggle linkage comprising an L-shaped operating lever 20, 21 pivoted at 13 on a pillar 16, and a connecting link 23 pivoted at 22 to the lever section 21 and at 30 to a swing link 14 which is itself pivoted to a sleeve 8 at 10 and to the pillar 16 at 12 the arrangement being such that the ratio between the distance moved by the stopper plug 6 and the pivot 30 increases as the plug rises. A further swing link 15 pivoted at 11 to the sleeve 8 and also at 13 to the pillar 16 carries a stop 31 which limits the movement of the connecting link 23 and thus the height to which the plug 6 rises. The sleeve 8 is movably attached to the stopper rod 7 by a screw 9 and the pillar 16 slides in a guide 17 attached to the ladle 1 and is fixed by one or more screws 18. The lever 20 is operated against a spring 18 which tends to restore it to a position in which the plug 6 is closed and the three pivots 22, 13 and 30 are aligned. Fig. 4 is a diagrammatic view showing the movement of the pivots 10, 11 of the two swing links 14, 15 for a movement of the plug 6 over the vertical distance h. The operative radius of the top swing link 14 is denoted by r, whereas b denotes the vertical distance between the two swing links, c denotes the vertical distance between the link 15 and the bottom edge of the plug 6 and d=c+b denotes vertical distance of the top link 14 from the plug bottom edge. A simplified formula connecting these distances is The invention may also be applied to tundishes and melting furnaces.
Patent GB-1212200-A (GB)
Title: Improvements in or relating to cutting assemblies
IPC: E21C35/183
Filed: 1967-12-06
Abstract: 1,212,200. Mineral-mining picks. SOC. DES POUDRES METALLIQUES ET DES ALLIAGES SPECIALIX UGINE-CARBONE. 6 Dec., 1967 [8 Dec., 1966], No. 55565/67. Heading E1F. Each of the picks 1 mounted on a rotary drum 2 has a working face 5 inclined at an angle of substantially 45‹ to the longitudinal axis of its shank and the pick is so mounted in an associated pick box 3 of the drum that the working face of the pick is parallel to but spaced from a radial line drawn from the box to the axis of rotation of the drum. The head of the pick is tapered and the working face which is formed by one narrow side of thereof, is formed 'by the exposed surface of a hard metal insert 6. Shoulders 7 are provided on the pick for abutting a pick box when the pick is located therein.
Patent GB-1143029-A (GB)
Title: Machines for mixing, transporting and placing concrete
IPC: B28C5/42
Filed: 1967-12-11
Abstract: 1,143,029. Vehicle steering mechanism. G. P. DUECY. 11 Dec., 1967 [29 March, 1967], No. 56217/67. Heading B7H. [Also in Divisions B1 and B8] In a concrete mixing vehicle in which the cab is mounted on a turntable, the upper portion 161 of the steering column which is part of the turntable structure may be disconnected from the lower portion 163 by a slidable coupling sleeve 164 which can be raised by a lever 166.
Patent GB-1219419-A (GB)
Title: Improvements in or relating to machines for drilling and/or marking workpieces
Inventor: DENTON RONALD BENTLEY
IPC: B23B41/00
Filed: 1967-12-12
Abstract: 1,219,419. Drilling; machine tool details. JOSEPH PARKS & SON Ltd. 7 March, 1969 [12 Dec., 1967], No. 56309/67. Headings B3B and B3C. [Also in Division B4] A machine for drilling and/or marking a workpiece comprises a tool-head, a workpiece support 2, means for controllably moving the support past the tool-head, means for moving the toolhead transversely to the direction of movement of the support, means for moving the tool-head towards and away from the support, means for loading a workpiece on to the support, means for unloading the workpiece from the support and means for indicating the position of the workpiece support relative to the toolhead. The machine comprises a tool-head including one or more drills 7 electrically operated, or a reciprocable centre punch, a pair of pneumatic piston-and-cylinder devices 8 for effecting fast feed-in and slow feed of the drill &c., and a pneumatic motor 10 for operating a worm drive 11 to move the drill &c., transversely along a beam 6 whose height above the machine bed 1 is manually or automatically adjustable. The bed 1 supports the worktable 2 movably on rollers 4 and movable by a rack-andpinion drive (Fig. 2, not shown), operable by pneumatic motor, from a loading position at one (right-hand) end of the bed to an unloading position at the other end of the bed. At the ends of the bed are a loading and unloading device 22, 16, respectively, comprising upper and lower frame members 19a, 17a and 19, 17 pivoted to opposite ends of levers 18a, 18, the upper frame members mounting arms 21a, 21 having at their upper ends ball castors. Movement of the table to the loading position causes a lever 20a, abutted by part of the table, to effect pivotal motion of the upper frame member 19a on the levers 18a whereby the arms 21a extend through the open framework of the table to receive the workpiece on the ball castors. The table is then moved to a selected position beneath the tool-head while the loading device returns to its retracted position. The workpiece is positioned below the tool-head by reference to two tape measures passing a pointer on the control panel of the machine. Work being completed, the table moves to the unloading position where the unloading device operates in reverse manner to the loading device. The arms 21 on one side of the unloading device are longer than those on the other side. As the arms 21 are raised they engage flats 23 on the table and thereby urge rollers 24 into contact with the workpiece and due to the tilt imparted to the flats by virtue of the differing arm lengths, the workpiece rolls off the table. The workpiece is clamped to the table after loading by levers operated by a series of cams positioned along the path of movement of the table, release of the workpiece occurring in a similar manner. The machine may be numerically controlled. The pneumatic control system for the motors may be replaced by an electrical or hydraulic system.
Patent GB-1204870-A (GB)
Title: A baking oven with means for air circulation
Inventor: JANSEN PETER
IPC: A21B1/02
Filed: 1967-12-12
Abstract: 1,204,870. Baker's ovens. FR. WINKLER K.G. 12 Dec., 1967, No. 56466/67. Heading A2A. A baker's oven comprises at least one heat radiator 3-6, Fig. 1, located below and/or above the conveyer belt 1 and through which hot air is also blown, the radiator comprising alternate ducts for heating gas and for hot air. Each radiator, Fig. 3, comprises parallel plats 22, 23 and a zig-zag divider 24, to produce ducts of triangular or trapezoidal cross-section. Ducts 25 convey the heating medium, e.g. hot gases, to provide radiant heat. Alternate ducts 26 convey hot air which is further heated by contact with the zig-zag divider 24 and is blown out of nozzles 19 to provide convection heat, and is recirculated or is exhausted by fan 20. The hot air circulation is adjustable.
Patent GB-1393040-A (GB)
Title: Luminescent materials
IPC: C09K11/78
Filed: 1973-12-06
Abstract: 1393040 Luminescent materials and uses thereof PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 6 Dec 1973 [9 Dec 1972] 56523/73 Heading C4S A luminescent material activated with Tb has a hexagonal crystal structure corresponding to that of #-alumina, and is of the composition (Ce 1-x-y La x Tb y ) 2 O 3 ÀnAl 2-z Ga z O 3  where 8#n13, 0#x#0À70, 0À001#y#0À30, (x+y)# 0À90 and 0#z#0À50. Also 10#n#12, 0À05# y#0À25 and x and z may each be zero. The phosphors emit a narrow band in the green region, are excited by u.v., X-rays and electrons, may be used in luminescent screens, e.g. luminescent screens in low p Hg lamps and low p Cd lamps. The phosphors may be in combination with other phosphors as green components in low p Hg lamps in electrophotographic, (e.g. xerographic) apparatus. The materials may be prepared by heating the oxides (e.g. 1200 to 1700 C.), but precipitation from solutions and heating of the precipitates is preferred. A detailed example is given. Heating of the precipitate is in air at 700 C., and a weakly reducing atmosphere at 1500 C. producing (Ce 0.98 Tb 0.02 ) 2  O 3 .11Al 2 O 3 . Other specified phosphors of formula (Ce 1-y Tb y ) 2 O 3 .11Al 2 O 3  have y values of 0À02, 0À05, 0À10, 0À20 and 0À30.
Patent GB-1393510-A (GB)
Title: Inclination balances
IPC: G01G1/22
Filed: 1973-12-13
Abstract: 1393510 Inclination balance METTLER INSTRUMENTE AG 13 Dec 1973 [15 June 1973] 57821/73 Heading G1W An inclination balance comprises a beam 22, a weighing pan carrier 15 which includes means 16 by which substitution weights 4 may be fitted to the carrier, an optical projection system, means 7 adjacent the read-out of the optical projection system for receiving one or more substitution weights removed from carrier 15, and a movable guard 8. As shown in Fig. 1, the optical projection system reads 0 to 10 units and the substitution weights have weight values 10 and 20. To weigh object 19 in figure 2, both substitution weights 4 have been removed from carrier 15 and mounted on pins 7, the weight being obtained by adding the values of the two weights 4 and the value indicated by the optical projection system. In an alternative form Figs. 4, 5 and 6 (not shown)  there are three substitution weights of weight values 10, 20 and 30 marked 1, 2 and 3 respectively, and only one weight is removed and placed adjacent the optical projection read-out so that the number marked on the weight and the value indicated by the optical projection system are read as a single number. The guard 8 is pivoted about axis 11 and when the guard is moved downwardly to enclose the carrier 15, it arrests the balance by abutting a pin 12. Pin 12 abuts a U-shaped member 54 via a spring 58 and pushes member 54 downwardly. The top limb of member 54 presses beam 22 downwardly so that pin 38 engages a seat 36. Movement of member 54 pivots a lever 46 which lifts member 24 attached to carrier 15 upwardly. This causes seat 28' on carrier 15 to be disengaged from the knife edge 26' and, via abutment of arm 40 with beam 22, lifts beam 22 into abutment with stop 64. A resilient pad 20 engages the weigh pan and the carrier 15, and a locking lever 13 engages a slot 13' to lock the guard 8 in its closed position. The optical projection system may include batteries 9 or a mains  connection, and a switch 18a operated by a cam 66 rotating with guard 8 ensures that the optical projection system lamp is only illuminated when the guard 8 is in a restricted range of angular settings. It may also be arranged that the lamp is only illuminated when each of the substitution weights is in position on the balance, either on the carrier 15 or on its pin 7. The guard 8 may be arranged to slide between its various positions instead of pivoting.
Patent GB-1145890-A (GB)
Title: Apparatus for cooling, moistening, or cleaning gases
Inventor: ARTZ HANS
IPC: B01D47/10
Filed: 1966-12-29
Abstract: 1,145,890. Venturi-scrubber. ZSCHOCKE WERKE G.m.b.H. 29 Dec., 1966, No. 58194/66. Heading B1R. A venturi-scrubber has two pairs of walls 2, 3 disposed within a rectangular casing 1, each pair of walls 2, 3 being hingedly connected to each other and to the casing at 6 and 7 respectively whereby by adjustment of the walls the cross-section of the venturipassage can be varied. The lower ends of the walls 3 carry rollers 8 which move in channels 12. The cross-section of the venturipassage may be varied automatically in response to variations in gas flow therethrough.